Toy calculator used for four-color maps

The invention provides a toy calculator used for four-color maps and a use method thereof, relating to the mathematics and geography education teaching field and aiming at solving the technical problem that five-color maps or six-color maps can only be published in all the countries at present. The calculator comprises a plurality of zoning modules, a plurality of ring-closing modules, a plurality of ring-opening modules, a plurality of counting modules and a calculating disk; wherein, the modules are all of six-side cube; each side of the zoning modules is marked with a unique natural number; each side of the ring-closing modules is provided with a mark representing ring closing; each side of the ring-opening modules is provided with a mark representing ring opening; each side of each counting module is marked with the same number from 1 to 100; six sides of each counting module are painted with six colors respectively, namely A, B, C, D, E and F; the calculating disk is labeled witha ...

Abacus calculator used for four-color maps and use method thereof

The invention provides an abacus calculator used for four-color maps and a use method thereof, relating to the mathematics and geography education teaching field and aiming at solving the technical problem that five-color maps or six-color maps can only be published in all the countries at present. The calculator comprises rectangular frames and the like; wherein, a beam 5 is parallel to upper and lower edges; a rod 11 with 3-20 beads, which runs through the beam 5, is parallel to left and right edges; a primary area sequence number bead 6, a primary area attribute bead 7 and a primary area color bead 8 are arranged on a rod between the left edge 3 and the beam 5 in series; all the beads are of hollow hexagon; wherein, each side of the primary area sequence number bead is marked with a unique natural number; the primary area color bead 8 is adjacent to the beam 5; the primary area attribute bead 7 is arranged between the primary area sequence number bead 6 and the primary area color bead ...

Two acacia rachii cellulose synthase gene and method for raising plant cellulose content

The present invention relates to two rich acacia cellulose synthase genes and the genetic technology of utilizing the genes in raise the cellulose content of plant and researching the possible functions, and aims at improving the quality of tree quickly and genetically. Two cellulose synthase genes are cloned from rich acacia and positive sense and antisense binary element plant expression vector is constructed. The present invention has the main aims of speeding the growth of some tropical and subtropical trees, increasing the cellulose content and improving the cellulose quality, as well as researching the expression mechanism of these two genes in rich acacia. At present, these two genes have shown the characteristic of raising cellulose content in tobacco.

Cotton sheet thickness detection mechanism

The invention provides a cotton sheet thickness detection mechanism, which is applied to the technical field of cotton opening-clearing technology process. In the detection mechanism, a nipper pressure is acquired by adopting a suspension weight method below a cotton gripping jaw, wherein different weights are adopted according to different raw materials to acquire different nipper pressures; the weights suspended below each jaw have same weight to ensure every jaw to acquire equal nipper pressure; sliding contractors are arranged on the top ends of the jaws with same specification requirements; due to different heights of points of a cotton sheet, the sliding contactors on the top ends of the jaws locate in the positions with different heights; thus a sensitive sliding rheostat circuit is arranged on a proper position above each sliding contactor; a total resistance of sliding rheostats is controlled by the heights of the sliding contactors, thereby automatically controlling circuit current ...

Cotton stacking hopper

The invention provides a cotton stacking hopper which is applied to the cotton stacking process of a reciprocation bale plucker in a blow room system. The main body of the cotton stacking hopper is made of sheet iron and is in a special hopper shape; the upper opening and the lower opening of the hopper are rectangular; the front surface and the back surface of the hopper are special symmetric figures; the lower opening is outwards provided with two movable finishing iron plates; the lower opening is blocked off when the cotton stacking hopper does not work; the cotton stacking hopper outwards slip off by a sliding chute when working; cotton blocks are put in the cotton stacking hopper under the condition of closing the lower opening; then the finishing plates slide away; the cotton blocks run out from the rectangular lower opening along the curved surface of the inner wall of the cotton stacking hopper; in the travelling process of the bale plucker, the regularity of cotton stacks paved ...

External anti-reversal starting device of single-cylinder diesel engine and use method thereof

The invention discloses an external anti-reversal starting device of a single-cylinder diesel engine consisting of an anti-reversal starting base and a starting handle. The anti-reversal starting base comprises a connecting board, a ratchet, a claw and an automatic disengaging sleeve, wherein the ratchet is arranged on the connecting board through a bearing. The starting handle comprises a rotating sleeve, a 7-shaped handle, a starting handle and an auxiliary starting pin, wherein the diameter and an installation position of the auxiliary starting pin are matched with a groove port on the exposed end surface of a ratchet sleeve shaft. The diesel engine can be normally started only by using the handle with the auxiliary starting pin without changing the components of the diesel engine. When the diesel engine cannot be normally started and reversal generates, reverse impact force acting on the handle is transmitted to the ratchet, the invention can prevent the handle from reversely rotating ...

Protection device

The invention provides a protection device applied to the plucking process of a plucker in an opening and picking process. The protection device comprises two blades and two protection halftones, wherein the blades are respectively mounted at both sides of a roller beater of the plucker; the edge of each blade faces outwards and is as long as the roller and slightly higher than the lowest end of the roller beater; and the two rectangular protection halftones are mounted at both sides of the blades and the length and the lower-end height of each rectangular protection halftone are both equal to those of the roller beater, the protection halftones are connected with the plucker body by a spring hinge and keep a vertical state when unstressed so as to prevent the blades from damaging a human being. When a piece of clothes is hooked by a plucking beater, the limb is towed to the beater by the clothes, and extremely great tension in the clothes due to the instinct response of a person pushes ...

Induction heater for microwave measurement

Modified palladium electrode preparation method

The invention discloses a modified palladium electrode preparation method. Firstly, the surface of the palladium electrode is pretreated. And the pretreated palladium electrode is immersed in a chloride palladium hydrochloride aqueous solution for 20-50min. Then, the palladium electrode is fetched out, flushed by secondary distilled water and is blown to be dry by nitrogen with high purity. And then the palladium electrode is put in supporting electrolyte for cyclic voltammetry scanning until the graphic is stable. The modified palladium electrode is made just by the secondary distilled waterflushing and the high purified nitrogen blowing. The preparation method is simple with low cost. The prepared modified palladium has fast response to methane and high sensitivity and can be used for methane detection.

Lap-formation pressurizing mechanism

The invention provides a ,lap-formation pressurizing mechanism which is applied to opening and cleaning processes, in the lap formation process of textile raw materials, a main part of the lap-formation pressurizing mechanism is same as the original lap-formation pressurizing mechanism, a small-diameter lap roller is adopted to replace the original big lap roller and arranged above and to the outer side of the lap roller, two lap rollers are connected by a belt curtain which has enough elasticity, the shape and the position of the original lapping roller keep constant, a lap is driven to rotate by the lapping roller, the two lap rollers and the belt curtain between the two lap rollers during the lap formation process, the lapping roller ascends when the lap is enlarged, the lap is compacted by means of the full tension and friction of the belt curtain in the process of driving the lap to rotate, and the lap is tensioned and tightened. Compared with the prior art, the lap-formation pressurizing ...

Blowing-carding cotton distributing machine

The invention relates to a blowing-carding cotton distributing machine which comprises a cotton feed hopper part, a vibrating cotton box part and a cotton distributing machine part, wherein the cottonfeed hopper part is installed at the upper part of the vibrating cotton box part, and the cotton distributing machine part is installed at the lower part of the cotton box part; and the cotton distributing machine part comprises a balance rod part, a beater part, a dust cage part, a cotton stripping roller part, a fan part and a hook part. Although the novel blowing-carding cotton distributing machine provides cotton just by airflow air pressure, the advantages of the novel blowing-carding cotton distributing machine are quite outstanding; the uniformity of a fiber layer is obtained by a mechanical lever type measurement approach through signal processing; and the invention is completely controlled, has high quality index and low investment cost and maintenance technology requirement andcan ...

Abacus calculator used for four-color maps and use method thereof

The invention provides an abacus calculator used for four-color maps and a use method thereof, relating to the mathematics and geography education teaching field and aiming at solving the technical problem that five-color maps or six-color maps can only be published in all the countries at present. The calculator comprises rectangular frames and the like; wherein, a beam 5 is parallel to left and right edges; a rod 11 with 3-20 beads, which runs through the beam 5, is parallel to upper and lower edges; a primary area sequence number bead 6, a primary area attribute bead 7 and a primary area color bead 8 are arranged on a rod between the left edge 3 and the beam 5 in series; all the beads are of hollow hexagon; wherein, each side of the primary area sequence number bead is marked with a unique natural number; the primary area color bead 8 is adjacent to the beam 5; the primary area attribute bead 7 is arranged between the primary area sequence number bead 6 and the primary area color bead ...

Frequency domain test system and method for flight control software control network

The invention relates to frequency domain test system and method for a flight control software control network, which can realize a frequency domain test to a flight control software control network. The invention is characterized by loading a process control module, an environment simulation module and a background processing module to a digital simulation platform for testing, so that the test of the flight control network is realized, and then, the frequency domain output by the test is analyzed by an off-line analysis module, wherein the process control module is used for controlling the whole process of the test, and the environment simulation module and the background processing module are used for simulating the real-time flight environment of the flight control software and generating and recording input and output data. Meanwhile, compared with the prior art, the invention also has the characteristics of high speed, high accuracy, comprehensiveness and the like.

Testing method and instrument of multipoint earthing slide-variable resistance of common circuit

The invention discloses testing method and instrument of multipoint earthing slide-variable resistance of a common circuit. The testing method comprises the following steps of: breaking the earthing point of the tested N wire by connecting a slide-variable resistor and an alternating-current ampere meter between the tested N wire and the earthing point to change the resistance value of the slide-variable resistor; and judging whether multipoint earthing exists in the common circuit or not by collecting the current value of the alternating-current ampere meter, wherein the current value changes along with the resistance value of the slide-variable resistor. The testing instrument of multipoint earthing slide-variable resistance of the common circuit can directly detect whether multipoint earthing exists in the common circuit or not, thereby having simple and convenient operation, friendly and visual interface. The testing method and instrument can be widely applied to the operation and detection ...

METHOD FOR PREPARING HIGH-PURITY CHLORINE DIOXIDE BY USING METHANOL AND HYDROGEN PEROXIDE AS REDUCING AGENT

The invention discloses a method for preparing high-purity chlorine dioxide by using methanol and hydrogen peroxide as reducing agent. The method comprises: concentrated sulfuric acid and sodium chlorate solution are injected into the generator to form the reaction mother liquid. The reaction mother liquid shall be maintained a certain acidity, temperature and sodium chlorate content, and then it is reacted with the reducing agent (methanol and hydrogen peroxide) to produce chlorine dioxide gas and by-product sodium sulfate. The chlorine dioxide gas is cooled and absorbed by low temperature chilled water to obtain an aqueous solution of chlorine dioxide, and by-products are recycled. The chlorine dioxide solution produced by the aforementioned method has a 60-70% reduction in the Cl2 content and 14-20% reduction in sulfuric acid consumption than that of the chlorine dioxide produced by using a single methanol reducing agent, and the by-product produced is sodium sulfate, not sodium hydrogen sulfate, so neutralization reaction treatment is not required. 1. A method for preparing high-purity chlorine dioxide by using methanol and hydrogen peroxide as reducing agent , characterized in that , it comprises the following steps:First step, the concentrated sulfuric acid and sodium chlorate solution are injected into the generator system to form a reaction mother liquid. The reaction mother liquid is maintained at an acidity of 5.8-6.2N, sodium chlorate content is 234-266 g/l, and temperature is maintained at 69-73° C.; the aforesaid generator system consists of a reactor and a reboiler connected by a circulation pipe;Second step, the reducing agent is added into the reaction mother liquid to produce chlorine dioxide gas and by-product sodium sulfate. The reducing agent is composed of methanol and hydrogen peroxide. The ratio of methanol to hydrogen peroxide by mass percentage is: 60-70% of methanol:30-40% of hydrogen peroxide;Third step, the generated chlorine dioxide gas ...

Test paper for determining sulfur dioxide content in garden stuff and edible fungus fresh-keeping can

The invention relates to a test paper and a standard colorimetric card thereof which are developed based on the theory that methylene blue dye fades while meeting sulfite. The test paper and the standard colorimetric card are used for quantitatively testing the sulfur dioxide content in fruit and edible fungi can. The invention is characterized by rapidness, convenience, accuracy, convenient carrying, etc. The cost of the test paper preparation and the testing is low, the raw material is non-toxic and harmless, and the processes of preparation and testing are safe.

Cleaning board

The invention provides a cleaning board, which is applied to the cleaning process of a brad nail lattice in opening picking machinery. The main body of the cleaning board is a metal board, and the technical scheme is as follows: a thin rectangular metal board is installed at the non-plucking side of the brad nail lattice; the metal board plane is parallel to the plucking plane of the brad nail lattice, the size of the metal board plane is the same as that of the plucking plane of the brad nail lattice; the surface of the metal board is coated with insulating paint, a lead at the side of the metal board far away from the brad nail lattice is connected with an electrostatic generator, in operation, the electrostatic generator is utilized to ensure that the metal board is loaded with static, so as to generate an electrostatic field around the electrostatic generator; when the brad nail lattice rotates, deposited dust and textile raw materials in lattice seams and on the root of the brad nails ...

Low consumption dielectric material high temperature complex dielectric constant test device and method

The invention discloses a device and a method for testing high-temperature complex permittivities of low-loss dielectric materials, which belongs to the micro-wave, millimeter wave low-loss dielectricmaterials complex permittivities testing technique. The testing device comprises a micro wave signal source, a cylinder type high Q resonant cavity, a scalar network analyzer and a vacuum high-temperature furnace, wherein the cylinder type high Q resonant cavity comprises a cylinder cavity tube, an upper end cover, a lower end cover and a connecting wave guide, whole resonant cavity adopts thin-wall precious metals to form a cavity, and adopts high-temperature resisting material to form a supporting body. Adoption of the testing device comprises following steps: testing a resonating frequencyrate of an empty cavity f0 and a non-loading quality factor Q0, and testing the resonating frequency rate f0 epsilon and the non-loading factor Q0 epsilon of a rear resonating cavity of a tested sample ...

Impurity removing stick

The invention provides an impurity removing stick, which is applied in an impurity removing process of a double axial-flow opener. The impurity removing stick adopts the following design scheme: the primary linear impurity removing stick blades are manufactured into helical blades with the same texture as those of the primary impurity removing stick, each blade rotates 45 degrees on the impurity removing stick, the lateral axial height of the blade is the same as that of the primary blade, and the longitudinal length is still the length of the primary impurity removing stick; when the impurity removing stick rotates, the blades generate wind power in the axis direction, and the wind power is along the direction of an impurity outlet; and when the dust between bar grids falls to the impurity removing stick, the impurity removing stick guides the fine impurities to the impurity outlet along the axial direction by means of the wind power generated by per se rotation, a part of large impurities ...

Color-developable and degradable child flour mud powder

The invention provides color-developable and degradable child flour mud powder, which comprises the following ingredients in percentage by weight: 0.010 to 0.027 part of dyestuff, 9.22 to 9.32 parts of flour, 0.3 to 0.7 part of glycerin, 0 to 0.05 part of sodium carbonate and 0.033 to 0.08 part of sodium sulfite microcapsules, and in addition, a proper amount of essence can also be added into theingredients. A preparation method comprises the following steps: proportionally sieving and uniformly mixing the dyestuff, the flour and the sodium carbonate; then, taking and adding the glycerin into the mixture to be uniformly stirred; and next, taking and adding the sodium sulfite microcapsules into the flour mixture to obtain finished products. The invention has the advantages that the manufacture process of the flour mud powder is simple and can be easily implemented, the products have the effect of environmental protection and safe use, and the child flour mud powder belongs to a child toy ...

Detection system

The invention provides a detection system capable of detecting the cotton flow in the waste pipe of an electrical cotton distributor. The system comprises a mechanical sensor and a microcomputer and the design scheme is as follows: in the electrical cotton distributor, the mechanical sensor is arranged at the center of the revolving shaft of a cotton-pulling beater arranged below a dust cage to obtain the instantaneous torque suffered by the cotton-pulling beater, the amount of the torque can represent the cotton flow in the waste pipe, the sensor is connected with the microcomputer, the microcomputer fits a plurality of experimental data of the sensor to form a torque-cotton flow curve graph through the fitting program, when in use, the data of the cotton flow in waste pipe can be obtained according to the sensor data of the sensor and the curve graph; and by using the detection system of the invention, the cotton flow in the waste pipe can be effectively detected during the cotton-distributing ...

Bridge-type magnet capable of demagnetizing

The invention provides a bridge-type magnet capable of demagnetizing, applied to a process of removing metal impurities in an opening picking process. The bridge-type magnet capable of demagnetizing consists of a common bridge-type magnet, an induction coil, a compass, a direct current transformer and a power source. The bridge-type magnet capable of demagnetizing has the design scheme as follows: the induction coil is wound on the outer surface of the common bridge-type magnet; the length of the induction coil is slightly smaller than that of the bridge-type magnet; two ends of the coil are connected with a switch, the direct current transformer and the power source; the power source is switched off when the magnet removes the impurities, while the power source is switched on when the inner surface of the attracting magnet is cleared, so that the induction coil generates a reversing magnetic field of a permanent magnet field to counteract the inherent magnetic field of the device and avoid ...

Chinese medicine extracting and concentrating process and device thereof

An extracting and concentrating process for Chinese medicine includes such steps as loading raw Chinese-medicinal materials in extractor adding solvent, steam heating to obtain liquid, boiling evaporating in vacuum state, condensing the secondary vapour to obtain liquid, switching it to the liquid distributor of extractor, spraying it on the surface of Chinese-medicinal materials, and repeating said steps for extracting while concentrating. Its apparatus is composed of extractor, condenser, vacuum switching device, heater and evaporator. Its advantages are simple and compact structure, simpleprocess, high extraction rate, less loss and low secondary pollution.

Combined roller

The invention discloses a combined roller, which is applied in the technical process of opening picking. The combined roller is formed by combining a dust cage structure with a beater structure; the design scheme comprises the following steps: manufacturing a dust cage of which the diameter is slightly less than that of a common dust cage; sealing the position, at which a beater is to be arranged, on the surface of the dust cage by using a strip-shaped iron sheet; pasting inclined cotton stripping beaters on the iron sheet in whole rows, wherein a dust cage hollow structure is arranged between each two rows of cotton stripping beaters; and arranging an inclined leather wing doctor blade at a cotton outlet close to the combined roller, wherein the leather wing doctor blade serves as an attachment of the combined roller. In the process of working, the roller rotates fast, thus the roller is absorbed on the surface through an internal negative pressure of the roller when tearing a cotton block ...

Green environmental-protection fodder preparing method

The present invention discloses a green environment-protecting feed. Its composition includes (by wt%) 55-65% of corn, 25-35% of soybean care, 2-4% of miscellaneous grain cake, 1-3% of bran, 0.55-0.65% of calcium hydrosulfate, 1.5-2.3% of stone powder, 0.4-0.6% of phytase, 0.01-0.3% of lisine, 0.1-0.2% of methionine, 0.4-0.6% of compound enzyme preparation, 0.1-0.14% of 50% choline, 0.02-0.03% of compound multivitamin, 0.15-0.25 of compound organic trace element and 0.71-0.91 of diluting agent. It can effectively raise flavour and quality of meat product.

Resonance protection system

The invention provides a resonance protection device which is applied to the processes of starting and stopping of a single axial flow opener and comprises a speed sensor and a circuit control system. The speed sensor is arranged at a roller to obtain the instant rotating frequency of a rotating shaft and feed the frequency back to the circuit control system; at the stage of stopping, when the rotating speed approaches the resonance frequency, the circuit control system starts up reverse current to speed up the stopping and fast get cross a resonance area, and after the actual frequency is lower than the resonance frequency, the revere current automatically is cut off; and at the stage of powering on, the circuit control system receives feedback signals, and starts up speedup current when the rotating speed approaches the resonance frequency, so that the machine is sped up to get cross the resonance area, and subsequently the speedup current is automatically cut off. The resonance protection ...

Cotton-neatening carder

The invention provides a cotton-neatening carder capable of carding cotton stack to be even after an annular plucker stacks the cotton. The cotton-neatening carder is installed on a rotary transverse platform of the annular plucker stacks and is composed of a cotton carding board, a plurality of cotton carding rods and a cotton-neatening carder seat; the surface of the cotton carding rods is smooth and the lower end thereof is cone, the heights of the cotton carding rods and the cotton carding board can be regulated up and down; after cotton is stacked, the cotton carding rods and the cotton carding board are laid down, so that the lower ends of the cotton carding rods enter into the bottom of the cotton stack, the lower end of the cotton carding board contacts with the top surface of the cotton stack; a plucking trolley is started to rotate for a circle before plucking, so that the cotton stack is carded to be even by the cotton carding rods, and the top surface of the cotton stack is ...

Heavy hammer and low fall dynamic detection method for heavy tamping or impact rolling and filling of rockfill body

The invention discloses a heavy hammer and low fall dynamic detection method for heavy tamping and filling of a rockfill body, and the method comprises the following steps: 1) determining heavy tamping detection parameters which comprise the type of a rammer, the quality of the rammer and the fall of the rammer; 2) demarcating a measuring point; 3) carrying out height measurement on the measuring point before point tamping; 4) carrying out the point tamping on the measuring point; and 5) carrying out the height measurement on the measuring point after the point tamping, and obtaining the impact sunk amount of the point tamping of the measuring point by leading the height after the tamping of the measuring point to deduct the height before the tamping. The method is simple, fast, intuitive and effective.

Process for preparing spirulina tablet

A spirulina tablet for providing rich nutrients, improving immunity and antiradiation function and building up body is prepared from spirulina through instantaneous spray drying, vibration sieving, sterilization and mixing with edible amylin and talc powder. Its preparing process features simple technology, high mechanized level and one-pass shaping.

Heavy object separator

The invention provides a heavy object separator which is applied in the heavy object separating process of the opening picking technique. A main body of the heavy object separator is flat and cylindrical, the side surface is round, and a rotating shaft which is arranged in the middle is used for driving a leather bladed beater; a cotton inlet pipe and a cotton outlet pipe are respectively connected at the upper and lower ends at the same side of the round side surface of the separator; a cotton block is rolled up by the leather bladed beater after entering from a cotton inlet at the lower end and flows out from a cotton outlet at the upper end after rotating at 180 DEG in the separator; cotton flow rotates at 135 DEG after entering the separator, namely rotates along the 45-DEG direction of the horizontal plane; the separator is provided with a separation opening which is connected with a horn, a large opening of the horn is connected with the separator, and a small opening is inclined ...

Cooling and diverging system

The invention provides a cooling and diverging system applied to the technical aspects of cooling and diverging cotton flow of a cotton outlet of a three-roller cotton slitter in the process of opening and picking process. The cooling and diverging system consists of a dry ice storage device, an air inlet pipe, a temperature sensor and a system controller. The invention adopts the technical scheme that a cotton pipe close to a fine opening hand contact end in the three-roller cotton slitter is provided with an air inlet, wherein the direction of the air inlet is the axial direction of the cotton outlet pipe; the air inlet is connected with the dry ice storage device through the air inlet pipe; in addition, the temperature sensor is arranged at a cotton outlet so as to sense the temperature of cotton flow in the cotton outlet pipe and connected with the system controller which controls the delivery capacity of the dry ice according to the temperature of the cotton flow; the dry ice encounters ...

All-function-code Chinese character imputting method

Cylindrical high Q resonant cavity for microwave test under high temperature

PROCESS OF MANUFACTURING THE GATE OXIDE LAYER

A process of manufacturing the gate oxide layer, which uses the wet oxidation by deuterium to form gate oxide layer, wherein the nitriding treatment is applied to formed gate oxide layer by high temperature annealing process, the stable Si-D bonds is formed on surface of the gate oxide layer to reduce silicon dangling bonds, which reduce the defect of the gate oxide interface and lower the interface defect density of the gate oxide layer and the charge density effectively to avoid NBTI, is provided.

Control apparatus for power switching circuit and control means thereof

A control device of a power conversion circuit and a control method thereof are disclosed. The control method of the power conversion circuit includes the following steps: generating a first control signal and a second control signal; adjusting the first control signal according to the output voltage of the power conversion circuit; inspecting the output voltage of the power conversion circuit so as to obtain an inspecting result; the second control signal controlling the power conversion circuit if the result displays that the input voltage of the power conversion circuit is lower than the common operating standard position; the first control signal controlling the power conversion circuit if the result displays that the input voltage of the power conversion circuit is higher than the common operating standard position, wherein the working period of the first control signal is longer than the working period of the second control signal. The invention can obtain the input voltage standard ...

Cabin washing device of pure oxygen cabin

A cabin-cleaning device of a pure oxygen cabin comprises an oxygen cabin shell; an oxygen inlet device arranged at any ends inside the oxygen cabin shell; an oxygen exhauster arranged at the other end inside the oxygen cabin shell with respect to the oxygen inlet device. The cabin-cleaning device is characterized in that the oxygen inlet device comprises at least two oxygen inlet ports. Comparingwith the prior art, cabin-cleaning device adopts two or more oxygen inlet ports, so as to effectively improve cabin cleaning effect and effectively prevent dead angle in certain spaces inside the cabin generated because of not being sprayed by oxygen due to the straight-line layout of one oxygen inlet port and one oxygen outlet port, thereby remarkably increasing initial oxygen concentration inside the cabin and making the foundation for improving the therapeutic effect of the pure oxygen cabin.

Sober-up oral liquid made from fruit vinegar with persimmon pulp

A sober-up oral liquid made from fruit vinegar with persimmon pulp, which adopts fruit vinegar with persimmon pulp as a base material and is aided with a plurality of traditional Chinese herbs such as pueraria flower, amomun kravanh, amomum villosum, green tangerine peel, alisma orientale, white atractylodes rhizome, ginseng, orange peel costus root and the like. The oral liquid has processes of mixing fruit vinegar with the traditional Chinese herbs, and fermenting, filtering and refermenting the mixtures. The oral liquid not only reserves the rich nutrients and healthcare function of the fruit vinegar, but also has the efficacies of reinforcing the spleen and strengthening the stomach, eliminating dampness and promoting the circulation of qi, sobering up, and removing heat and protecting liver. The oral liquid can rapidly relive the symptoms of vomiting, headache, dizziness and dysphoria due to excessive drinking. The oral liquid is applicable to heat retention and anguish after drinking ...

Dust cage brush

The invention provides a dust cage brush which is applied to the impurity removing technical process of a condenser dust cage, wherein the main body of the dust cage brush is a spiral brush piece, the brush piece is made of an ordinary rubber material, has good elasticity and smooth surface and rotates around a dust cage shaft inside the dust cage, the length thereof is slightly smaller than the length of the dust cage, and the edge of a leather flap contacts the inner surface of the dust cage; when the dust cage rotates, the spiral brush piece is pushed to rotate through a negative-pressure airflow in the dust cage, so that the acting direction thereof is opposite to the rotating direction of the inner surface of the dust cage to ensure that a slip ratio exists between the brush piece and the inner surface of the dust cage; in the relatively rotating process of the brush piece and the inner surface of the dust cage, the inner surface of the dust cage is continuously scraped and brushed ...

Method for inactivating virus in plasma by super high pressure treatment

The invention provides an operational method for disinfection which comprises, sealing the blood plasma into sterilized plastic bag in vacuum, placing the bag into super high-pressure vessels, under low-temperature condition (-10-10 deg. C), carrying out pressurizing, releasing for 5-50 times, the total operating time being 5-50 minutes, the applied pressure being 100-300 MPa, the processed plasma will be free from protein activity injury, and the blood plasma will not be polluted.

PREPARATION OF HIGH-PURITY CHLORINE DIOXIDE

A method for preparing high-purity chlorine dioxide by using methanol and hydrogen peroxide as a reducing agent includes injecting concentrated sulfuric acid and sodium chlorate solution into a generator system to form a reaction mother liquid. The method also includes adding the reducing agent into the reaction mother liquid to produce chlorine dioxide gas and by-product sodium sulfate. The method further includes cooling and absorbing the produced chlorine dioxide gas by 4-10° C. chilled water to obtain a chlorine dioxide aqueous solution. The by-product sodium sulfate is filtered, washed, and recycled. 1. A method for preparing high-purity chlorine dioxide (ClO) by using methanol and hydrogen peroxide as a reducing agent , the method comprising:injecting concentrated sulfuric acid and sodium chlorate solution into a generator system to form a reaction mother liquid, wherein the reaction mother liquid is maintained at an acidity of 5.8-6.2 N, sodium chlorate content is between 234-266 g/l, and temperature is maintained at 69-73° C., the generator system comprising a reactor and a reboiler connected by a circulation pipe;{'sub': '2', 'adding the reducing agent into the reaction mother liquid to produce chlorine dioxide (ClO) gas and by-product sodium sulfate, wherein the reducing agent is composed of methanol and hydrogen peroxide and the ratio of methanol to hydrogen peroxide by mass percentage is between 60-70 percent of methanol and 30-40 percent of hydrogen peroxide; and'}{'sub': 2', '2, 'cooling and absorbing the produced chlorine dioxide (ClO) gas by 4-10° C. chilled water to obtain a chlorine dioxide (ClO) aqueous solution, wherein the by-product sodium sulfate is filtered, washed, and recycled.'}2. The method of claim 1 , further comprising:prior to adding the reducing agent, diluting the methanol with demineralized water to a volume concentration of 20 percent, andadding the diluted methanol to the reaction mother liquid from a venturi pipe at the reboiler ...

Variable multicolor flour mud powder and method for producing the same

Concave-convex type double dust cage

The invention provides a concave-convex type double dust cage which is applied to the impurity removal process of an opening and clearing technology. In the invention, one dust cage of the double dust cage is manufactured into a concave cylinder shape with a hollow middle, and the other dust cage is manufactured into a convex cylinder shape with convex middle; the outline generatrices of the two dust cages are fitting; and other auxiliary structures, such as a dust cage rotation shaft, a fan, an air flue and the like and the distance between the surfaces of the two dust cages are same to the original double dust cage. In the impurity removal process of the dust cage, when the fan exhausts, airflow is sucked in through the dust cage surface and cotton blocks are absorbed on the dust cage surface; because the superficial area of the dust cage increases with and cotton flow is unchanged, a cotton layer on the dust cage surface is stretched to be thin with high particles loose degree, which ...

Reference voltage circuit with controllable temperature coefficient and its method

This invention discloses a reference voltage circuit and method in which, utilizing a logic operator to control a multitask device and selecting an output voltage from the supplying voltage circuit corresponding to difference temperature coefficients, again utilizing an operation amplifier and an other multitask device controlled by above logic operator to adjust and amplify the selected voltage to a same reference voltage since the adjusted voltages are the same, it can prevent LCD panel from redesigning a circuit due to the variation of the temperature coefficiency.

Toy calculator used for four-color maps and use method thereof

The invention provides a toy calculator used for four-color maps and a use method thereof, relating to the mathematics and geography education teaching field and aiming at solving the technical problem that five-color maps or six-color maps can only be published in all the countries at present. The calculator comprises a plurality of zoning modules, a plurality of ring-closing modules, a plurality of ring-opening modules, a plurality of counting modules and a calculating disk; wherein, the modules are all of six-side cube; each side of the zoning modules is marked with a unique natural number; each side of the ring-closing modules is provided with a mark representing ring closing; each side of the ring-opening modules is provided with a mark representing ring opening; each side of each counting module is marked with the same number from 1 to 100; six sides of each counting module are painted with six colors respectively, namely A, B, C, D, E and F; the calculating disk is labeled with a ...

Method for analyzing carbon isotopes of micro single hydrocarbons in natural gas

The invention relates to a method for analyzing carbon isotopes of micro hydrocarbons in natural gas. The method is characterized by utilizing a divinyl benzene/carbon molecular sieve/polydimethylsiloxane (DVB/CAR/PDMS) composite adsorbing material to enrich the microcomponents in the hydrocarbons, carrying out thermal desorption at the gas chromatography injection port and carrying out separation through gas chromatography and analyzing the carbon isotopes of the single hydrocarbons by isotope ratio mass spectrometry. The method has the following beneficial effects: the method has the advantages of high carbon isotope testing precision and good repeatability, conforms to the research needs, is simple to operate and has good use and popularization values.

Heavy hammer and low fall dynamic detection method for heavy tamping or impact rolling and filling of rockfill body

The invention discloses a heavy hammer and low fall dynamic detection method for heavy tamping and filling of a rockfill body, and the method comprises the following steps: 1) determining heavy tamping detection parameters which comprise the type of a rammer, the quality of the rammer and the fall of the rammer; 2) demarcating a measuring point; 3) carrying out height measurement on the measuringpoint before point tamping; 4) carrying out the point tamping on the measuring point; and 5) carrying out the height measurement on the measuring point after the point tamping, and obtaining the impact sunk amount of the point tamping of the measuring point by leading the height after the tamping of the measuring point to deduct the height before the tamping. The method is simple, fast, intuitiveand effective.

Four point contacting ball bearing

The four point contacting ball bearing includes inner ring, balls and outer ring. Balls are set between the inner ring and the outer ring, and each of the inner ring and the outer ring has annular ball race contacting to each ball in two points with the angle of the two contacting points to the ball center being 30-120 deg. Compared with available ball bearing, the ball bearing of the present invention has smaller radical force applied to each contacting point, can bear axial force, has improved lubricating condition and thus longer service life.

Palladium nano/multi-walled carbon nano-tube compound and preparation method and application thereof

The invention relates to a palladium nano/multi-walled carbon nano-tube compound and a preparation method thereof. The preparation method comprises steps of chemical oxidization of multi-walled carbon nano-tubes (MWCNTs), sulfonyl chlorination of the MWCNTs, Chichibabin of the MWCNTs, and bonding of the MWCNTs and palladium nano particles. The palladium nano/multi-walled carbon nano-tube compound has the following chemical formula: MWCNTs-NH-(CH2)6-NH2-Pd. The palladium nano particles in the compound have good dispersion and small particle size, and can be used for detecting methane gas.

Induction heater for microwave measurement

An induction heating device used in microwave measurement pertains to microwave and millimeter wave technical field and relates to microwave and millimeter wave measurement technical field particularly. The invention includes an induction heating equipment, an induction ring and a vacuum firing furnace, which has two switch ports. The induction ring is made of copper tube, with middle part wound in twist and positioned inside the vacuum firing furnace and both ends through the switch ports of the furnace and connected with the induction heating equipment. The invention also can increase a cooling system. The induction heating equipment has a power controller and the vacuum firing furnace is provided with a temperature measurement port, an observation port, an aeration port, a vacuum measurement port and a vacuum bleeder port. The invention has the advantages of simple structure, convenient manufacture, quick heating speed and high heating efficiency, as well as object heating under different ...

Multifunctional 3X+1 guess demonstrator

The invention discloses a multifunctional 3X+1 guess demonstrator, comprising an odd nested bottom plate frame (4), an odd nested plate (1) and an even nested plate (2). The invention is characterized in that a two-dimensional numerical table is printed on the odd nested plate (1), and different positive odd numbers according with the 3X+1 guess are printed in the cells of the numerical table; one power supply, a single-ball and double-circuit lamp bulb and a common switch are installed in each cell of the odd nested plate; a two-dimensional numerical table is printed on the even nested plate(2), and different positive even numbers according with the 3X+1 guess are printed in the cells of the two-dimensional numerical table; and one power supply, a single-ball and double-circuit lamp bulb and a common switch are installed in each cell of the even nested plate. The invention can find out the operation result and the operation process that any one positive integer is calculated and changed ...

Variable multicolor flour mud powder and method for producing the same

The invention provides a children toy, in particular to a colorful-changeable flour-mud powder, according to mass percentages, which contains alizarin yellow of 0.01-0.035 accounts, 1-naphthol benzene of 0.014-0.043 accounts, quinoline blue of 0.015-0.042 accounts, anhydrous sodium carbonate of 2.95-3.35 accounts, dihydroxysuccinic acid of 3.14-3.67 accounts and flour of 92.59-94.85 accounts. The preparation method comprises weighting and mixing indicator and anhydrous sodium carbonate uniformly, baking at 100DEG C for 20-30min, screening via 80-200 meshes, weighting and mixing citrate and anhydrous sodium carbonate uniformly, adding the screened power, packs, and obtaining the colorful-changeable flour-mud powder. The product can be added with water to be twisted into mud form, with color change in kneading process. The invention has special formula, simple preparation and no hurt on human body, which color change function can develop children intelligence and develop practical ability ...

GC-IRMS direct measurement method for hydrogen sulfide sulfur isotope in mixed gas

The invention relates to a GC-IRMS direct measurement method for hydrogen sulfide sulfur isotope in mixed gas, which comprises the steps of: firstly, by utilizing a gas chromatogram-stable isotope ratio mass spectrum combined instrument with I s o d a t N T 2.0 software, carrying out the magnetic field control so that an intermediate receiving cup receives ions with the receiving charge-to-mass ratio of 35, which are 35H2S, and correspondingly, receiving cups on two sides respectively receive ions with charge-to-mass ratios of 34 and 36, which are 34H2S and 36H2S, and recording a numerical value of a magnetic filed at the moment; then correcting the instrument by H2S reference gas; secondly, injecting a plurality of gas samples containing 1-5ml H2S into a gas chromatograph in the instrument, and meanwhile obtaining gas chromatograms of 36H2S, 35H2S and 34H2S and gas chromatograms of ratios of 36H2S/34H2S and 35H2S/34H2S; finally, processing obtained data to gain a value of hydrogen sulfide ...

Dielectric materials high-temperature complex dielectric constant measurement method based on terminal short circuit method

The present invention provides a medium material high-temperature complex permittivity measurement method based on terminal short circuit and pertains to technology of microwave and millimeter wave dielectric material complex permittivity measurement. When the present invention adopts the terminal short circuit for measurement of high-temperature medium material complex permittivity, a heat dissipation wave guide, a heat insulation waveguide, a high-temperature waveguide with a certain length, and a coupling device, a short circuit board are together constitute a reactive type resonator, and dimensions and microwave loss of the resonator under different temperature can be obtained by measurement of resonance frequency and quality factor of the resonator, and the complex permittivity of the medium material under the temperature can be further measured. The present invention is suitable for the measurement of the medium material high-temperature complex permittivity of various frequency band ...

Cotton homogenizing sheet

The invention discloses a cotton homogenizing sheet, which is applied to the working process of an opening picking process vibration type cotton feeding machine. A main body of the cotton homogenizing sheet is a wear resistant plastic sheet which is provided with sawtooth grains and is arranged on one side of a cotton homogenizing roller above a brad curtain of the vibration type cotton feeding machine; the sawtooth size of the plastic sheet is very small; the cross section of the plastic sheet is arc-shaped; the upper end of the plastic sheet is connected with an upper wall plate of the cotton feeding machine, the distance between the upper end and the cotton homogenizing roller is large, and the lower end of the plastic sheet is close to the cotton homogenizing roller; the distance between the lower end of the plastic sheet and the cotton homogenizing roller can be adjusted according to the thickness of a cotton block needed to be controlled; and when the cotton homogenizing sheet is ...

Method for measuring high-temperature complex dielectric constants based on terminal short-circuit method

The invention belongs to the technical field of microwaves and millimeter waves, and in particular relates to a method for measuring complex dielectric constants of microwave and millimeter wave dielectric materials. When the method tests the complex dielectric constants of high-temperature dielectric materials by adopting a terminal short-circuit method, two same rectangular test waveguides are connected with a vector network analyzer respectively, and each rectangular test waveguide is formed by connecting a radiating waveguide, a heat insulation waveguide, a high-temperature waveguide and a short-circuit board sequentially; and the method comprises the following steps: firstly, measuring emission coefficients of two waveguides at room temperature; secondly, loading a dielectric sample to be tested in one of the test waveguides; thirdly, measuring the emission coefficients of the two waveguides at high test temperature, and correcting the emission coefficient of the waveguide loaded with ...

Pulse-width modulation controller

The invention relates to a controller of pulse width regulation which transfers an existing energy inducing mechanism integrated in a multifunctional pin holder (PH) and integrates the energy inducing mechanism into a feedback (FB) pin holder of the controller of pulse width regulation. Therefore, the ability of the controller of pulse width regulation provided by the invention for noise suppression can be increased, and the controller of pulse width regulation is unlikely to have fault action. Besides, the energy inducing mechanism of the controller of pulse width regulation provided by the invention selects an energy inducing transistor, of which the parasitic capacitance is unlikely to affect the precision of an over current protection mechanism of an electronic device by the controller of pulse width regulation, and thus implementation of the over current protection mechanism of the electronic device by the controller of pulse width regulation can be guaranteed.

Test paper for determining sulfur dioxide content in garden stuff and edible fungus fresh-keeping can

The invention relates to a test paper and a standard colorimetric card thereof which are developed based on the theory that methylene blue dye fades while meeting sulfite. The test paper and the standard colorimetric card are used for quantitatively testing the sulfur dioxide content in fruit and edible fungi can. The invention is characterized by rapidness, convenience, accuracy, convenient carrying, etc. The cost of the test paper preparation and the testing is low, the raw material is non-toxic and harmless, and the processes of preparation and testing are safe.

冷辗扩加工钢领的方法及钢领冷辗扩专用加工设备

The present invention discloses a method for processing travel ring by using cold roll-expanding process and its special-purpose processing equipment. Said processing method includes the following steps: (1). making body-conjuncted travel ring blank; (2) cold roll-expanding processing; (3) cutting body-cunjuncted travel ring; (4). turning small end surface and chamfering to requirements. Its special-purpose processing equipment includes rolling wheel, core roller component, pinch roller component and roundness roller component. Said invention not only makes the travel ring have high process accuracy and wearing feature, but also prolongs service life of travel ring.

Low consumption dielectric material high temperature complex dielectric constant test device and method

The invention discloses a device and a method for testing high-temperature complex permittivityes of low-loss dielectric materials, which belongs to the micro-wave, millimeter wave low-loss dielectric materials complex permittivityes testing technique. The testing device comprises a micro wave signal source, a cylinder type high Q resonant cavity, a scalar network analyzer, and a vacuum high-temperature furnace, wherein the cylinder type high Q resonant cavity comprises a cylinder cavity tube, an upper end cover, a lower end cover, and a connecting wave guide, whole resonant cavity adopts thin-wall precious metals to form a cavity, and adopts high-temperature resisting material to form a supporting body. Adoption of the testing device comprises testing a resonating frequency rate of an empty cavity f0 and a non-loading quality factor Q0, and testing the resonating frequency rate f0 epsilon and the non-loading factor Q0 epsilon of a rear resonating cavity of a testing sample of a loading ...

Connector for connecting capillary column with ceramic tube in individual hydrocarbon test system

The invention relates to a connector for connecting a capillary column with a ceramic tube, in particular to a connector which is arranged in an individual hydrocarbon carbon/hydrogen isotope test system and used for connecting a quartz capillary column with a ceramic reaction tube. The connector is implemented directly through high temperature silica gels, and has the advantages of good tightness, high elongation rate, good aging resistance, low loss, translucence, easy operation, and the like. The maximum operating temperature of the sealing connector can reach 300 DEG C, therefore, the accuracy of the connector as an important system component for testing values can be improved effectively; meanwhile, the connector has the characteristics of low cost, long service time, and good application and generalization values; and the invention is simple in structure and easy to replace, and reduces the overall investment funds in the process of operating the equipment.

Method for measuring high-temperature complex dielectric constants based on terminal short-circuit method

The invention belongs to the technical field of microwaves and millimeter waves, and in particular relates to a method for measuring complex dielectric constants of microwave and millimeter wave dielectric materials. When the method tests the complex dielectric constants of high-temperature dielectric materials by adopting a terminal short-circuit method, two same rectangular test waveguides are connected with a vector network analyzer respectively, and each rectangular test waveguide is formed by connecting a radiating waveguide, a heat insulation waveguide, a high-temperature waveguide and a short-circuit board sequentially; and the method comprises the following steps: firstly, measuring emission coefficients of two waveguides at room temperature; secondly, loading a dielectric sample to be tested in one of the test waveguides; thirdly, measuring the emission coefficients of the two waveguides at high test temperature, and correcting the emission coefficient of the waveguide loadedwith ...

Color-developable and degradable child flour mud powder

The invention provides color-developable and degradable child flour mud powder, which comprises the following ingredients in percentage by weight: 0.010 to 0.027 part of dyestuff, 9.22 to 9.32 parts of flour, 0.3 to 0.7 part of glycerin, 0 to 0.05 part of sodium carbonate and 0.033 to 0.08 part of sodium sulfite microcapsules, and in addition, a proper amount of essence can also be added into the ingredients. A preparation method comprises the following steps: proportionally sieving and uniformly mixing the dyestuff, the flour and the sodium carbonate; then, taking and adding the glycerin into the mixture to be uniformly stirred; and next, taking and adding the sodium sulfite microcapsules into the flour mixture to obtain finished products. The invention has the advantages that the manufacture process of the flour mud powder is simple and can be easily implemented, the products have the effect of environmental protection and safe use, and the child flour mud powder belongs to a child toy ...

Falling impurity box

The invention provides a falling impurity box applied to the working process of collecting falling impurities of a hopper opener. The falling impurity box has the designed scheme that a smooth circular-arc board is welded in the falling impurity box of the original hopper opener, the upper end of the circular-arc board is tangent with a wall board below a brad curtain, the lower end of the circular-arc board is connected with an outer wall board of a cotton feeder and is 30cm far away from the ground, both sides of the circular-arc board are respectively connected with two side wall boards of the hopper opener, the hopper opener is provided with a sliding door on the joint of the outer wall board of the hopper opener and the circular-arc board, and the sliding door can slide upwards. When the hopper opener works, the falling impurities slide to a sliding doorway of the outer wall board of the cotton feeder under the guidance of the circular-arc board, a garbage box is placed below the sliding ...

Pipeline impurity-removing device

The invention provides a pipeline impurity-removing device for the impurity-removing work of a plucker in an opening picking process, which comprises a net sheet and an impurity-removing pipe. The proper position of a cotton-discharging pipe is made into a bend angle between 60 degrees and 90 degrees; the bend angle part is provided with an impurity-removing opening; the impurity-removing opening is covered by the net sheet and connected with the impurity-removing pipe; air flows inside the impurity-removing pipe are slightly lower than that inside the cotton-discharging pipe in speed and are concurrently outward; cotton masses and dust impurities are absorbed into the cotton-discharging pipe from the plucker and firstly impact against the net sheet positioned on the impurity-removing opening when passing through the bend angle, and the cotton masses flows into a pipeline positioned at the rear end of the cotton-discharging pipe and the dust impurities are discharged from the impurity-removing ...

Cotton adjusting plate

The invention provides a cotton adjusting plate which can adjust the thickness and the uniformity of a cotton layer on the surface of a dust cage and is applied to the working process of a condenser. The main part of the cotton adjusting plate is a sheet iron inserting plate, a rectangular cotton adjusting inserting plate is installed above the dust cage of the condenser, the width of the inserting plate is equal to that of the dust cage in the condenser, a knife edge is positioned at the lower end of the inserting plate, the knife edge faces to a cotton inlet of the condenser, the condenser extends out from the upper end of the cotton adjusting inserting plate, scales are marked so as to indicate the thickness of the cotton layer on the surface of the dust cage, the position height is determined by the size of cotton flows, and plug pin holes are drilled in both sides of the cotton adjusting inserting plate and used for adjusting the height of the cotton adjusting inserting plate and fixing ...

Dust dropping device

The invention provides a dust dropping device, applying to a dust dropping process of a cotton opening machine in cotton opening and cleaning technology. The dust dropping machine mainly comprises metal bars and induction coils, wherein the arrangement in the cotton opening machine is that thin metal bars are fixed below and close to every grid bar; the metal bars are wound by the induction coils on the surface; the metal bars are mutually insulated and the metal bars and the grid bars are mutually insulated. When in operation, every coil is connected with high-frequency alternating current to enable peripheral magnetic field generated by each coil and metal bar to oscillate rapidly; fine silts and impurities attached to the grid bars due to electrostatic interaction mechanically oscillate by the influence of changeable electromagnetic forces from different directions, drop from the grid bars finally, and are sucked and taken away by the negative pressure in a dust dropping box. The dust ...

Variable multicolor flour mud powder and method for producing the same

The invention provides a children toy, in particular to a colorful-changeable flour-mud powder, according to mass percentages, which contains thymol phthalein of 0.05-0.06 accounts, fenolftaleina of 0.039-0.047 accounts, cresol red of 0.024-0.034 accounts, bromothymol blue of 0.015-0.025 accounts, anhydrous sodium carbonate of 2.95-3.35 accounts, citrate of 3.14-3.67 accounts and flour of 92.59-94.39 accounts. The preparation method comprises weighting and mixing indicator and anhydrous sodium carbonate uniformly, baking at 100DEG C for 20-30min, screening via 80-200 meshes, weighting and mixing citrate and flour uniformly, adding the screened power, packing, and obtaining the colorful-changeable flour-mud powder. The product can be added with water to be kneaded into mud form, with color change in kneading process. The invention has special formula, simple preparation and no hurt on human body, which color change function can develop children intelligence and develop practical ability.

Variable multicolor flour mud powder and method for producing the same

The invention provides a children toy, in particular to a colorful-changeable flour-mud powder, according to mass percentages, which contains alizarin yellow of 0.01-0.035 accounts, 1-naphthol benzene of 0.014-0.043 accounts, quinoline blue of 0.015-0.042 accounts, anhydrous sodium carbonate of 2.95-3.35 accounts, dihydroxysuccinic acid of 3.14-3.67 accounts and flour of 92.59-94.85 accounts. The preparation method comprises weighting and mixing indicator and anhydrous sodium carbonate uniformly, baking at 100DEG C for 20-30min, screening via 80-200 meshes, weighting and mixing citrate and anhydrous sodium carbonate uniformly, adding the screened power, packs, and obtaining the colorful-changeable flour-mud powder. The product can be added with water to be twisted into mud form, with color change in kneading process. The invention has special formula, simple preparation and no hurt on human body, which color change function can develop children intelligence and develop practical ability ...

Four-color map teaching instrument and manufacturing method thereof

The invention discloses a four-color map teaching instrument and a manufacturing method thereof, relating to the education and teaching field of mathematics and geography and aiming at solving the technical problem that each country can only publish and issue five-color maps, six-color maps and other maps, the number of the colors of which is more than 4 at present. The four-color map of the invention has administrative divisions drawn by four independent colors, the administrative divisions at the same level, which share boundaries, have different colors, and the four-color map is drawn on the carriers such as globes, wall maps, slides, jigsaws and the like. The invention is suitable for drawing the map with four colors.

Cylindrical high Q resonant cavity for microwave test under high temperature

A cylindrical high-Q resonant cavity for high-temperature microwave test belongs to the field of the microwave test technique. The cylindrical high-Q resonant cavity comprises a cylindrical barrel, an upper end cap, a lower end cap and a connecting waveguide. The cylindrical barrel, the upper end cap and the lower end cap are equally divided into an inner layer and an external layer. The inner layer is a thin fire resistant noble metal material. The external layer is a thick fire resistant supporting material. The substance is that the thin fire resistant noble metal material is adopted for making the cavity of the cylindrical high-Q resonant cavity, and the fire resistant material is adopted for supporting the thin fire resistant noble metal material to form a cylindrical high-Q resonant cavity. The whole cylindrical high-Q resonant cavity has the characteristics of suitability for test high-temperature behavior of microwave and millimeter wave dielectric material, simple structure, low ...

Profiled flange bearing

A special shaped bearing with guard edge is composed of external ring, internal ring, roller holder between said internal and external rings, the rollers arranged in said roller holder, and a guard edge connected to external (or internal) ring for increasing the strength and rigidity of external (or internal) ring.

Destaticizing device

The invention provides a destaticizing device which is applied to the technical field of cotton openers; two metal splints formed by respectively overlying two thin metal plates together (four metal plates in all) are respectively arranged at two axial ends of a roller of a cotton opener, wherein the two metal plates near the roller side are grounded by leads, the surfaces of the two metal plates near the wall plate side of the cotton opener are coated with intensive insulating paint, a lead is respectively led from the side near the wall plate, connected with an ac-dc converter and then connected with a transformer and a power supply. The power supply is switched on when the cotton opener works so as to generate a parallel electric field between the two metal plates near the outer side, the electric field axially passes through a cotton stream along the roller, enables static in a cotton block to move towards the metal plates during the cotton opening and is led out through a grounding ...

Construction method and equipment of holding and pressing type static-pressure driven cast-in-place pile

The invention relates to a construction method of a holding and pressing type static-pressure driven cast-in-place pile by adopting a holding and pressing type static-pressure immersed tube pile machine. The machine comprises a machine body, a pile hanging mechanism, a walking mechanism, a control device and a side holding type pile clamping and pressing mechanism, wherein the side holding type pile clamping and pressing mechanism is connected with a pile clamping box sliding up and down along a slide rail through a pile pressing oil cylinder by a pile pressing frame, a pile clamping oil cylinder is arranged in the pile clamping box and connected with a clamping block for clamping a pile tube, and the pile clamping box is elastically connected with a concrete jolt ramming mechanism. The construction method comprises the following steps of: immersing the pile tube to an underground designed elevation part in a holding and pressing mode from the side face of the pile tube; primarily pouring ...

Modified palladium electrode preparation method

纺织纤维成卷机

The present invention relates to a textile fibre lamp machine. In the transmission system of cotton lap roller and cotton-feeding system a cycloid pin gear reduction motor Mz and a clutch driving wheel Z31 are contained, the cycloid pin gear reduction motor M2 utilizes the driving wheel group D3D4 to drive driving shaft I, on the driving shaft I the driving wheel D4 and Z30 and gear Z5 are mounted, betwene driving wheel D4 and Z30 they are fixedly connected, between driving wheel D4 or Z30 and driving shaft I an overrunning clutch is set, and between the driving shaft I and cotton-feeding system a clutch driving wheel Z31 is set, and the declutching and clutching of the cotton-feeding system can be implemented by means of the lutch driving wheel Z31 and its control device.

All-function-code Chinese character inputting method

A Chinese-character enter method "universal code" includes 4 enter approaches: shape code, quasi=complete code and standard code for single words and phrases. It defines pronunciation code composed of initial consonant code, vowel code and tone code. The common 95 structures of Chinese characters are defined as cells, based on which Chinese characters are dichotomized to extract three cells as shape code. The first two bits of shape code plus the first two bits of pronunciation code are defined as quasi-complete code. The first three bits of quasi-complete code are defined as standard code. The method can be used to enter single words and phrases.

Cotton-slitting beater

The invention provides a cotton-slitting beater, which is applied to a step cleaner and comprises the following manufacturing process that: the cotton-slitting beater with a specific profile is manufactured by adopting a casting technique, wherein the main part of the cotton-slitting beater is the same as the common truncated cone bradnail; the surface of the cotton-slitting beater is provided with a plurality of loops of special male threads along the axial direction at intervals of 1 to 2 cm; the figure of the special male thread along the axial section of the beater is formed by intersecting a curve sin(x) and a curve sin(x-pi/2) with x axis at an interval [pi/2, pi]; during cotton slitting, the cotton-slitting beater can effectively cut into a cotton block from a plurality of positions; along with the rotation of the beater, the cotton block is torn in a larger range; and compared with the common truncated cone bradnail beater, the cotton-slitting beater of the invention has more acute ...

Dielectric materials high-temperature complex dielectric constant measurement method based on terminal short circuit method

3X+1 conjecture scientific demonstrator

The invention discloses a 3X+1 conjecture scientific demonstrator which comprises an odd nested soleplate frame (4), an odd nested plate (1) and an even nested plate (2) and is characterized in that a two-dimensional numerical table is printed on the odd nested plate (1), and different positive odd numbers conforming to a 3X+1 conjecture are printed in the cells of the two-dimensional numerical table; a two-dimensional numerical table is also printed on the even nested plate (2), different positive even numbers conforming to the 3X+1 conjecture are printed in the cells of the two-dimensional numerical table and are nested by continuously multiplying the positive odd numbers on a 0th zone bit of the table by 2. A common bulb, a power supply and an electric-knife double-throw switch are installed in each cell, and the 3X+1 conjecture scientific demonstrator has the advantages that the operation result and the operation process of changing any positive integer into 1 by computing according ...

Control circuit of P type power transistor

The invention provides a circuit controlled by a P type power transistor. The circuit comprises the P type power transistor which is provided with grid ends and coupled between an input voltage and an output voltage, a first switch which is coupled between a first voltage and the grid ends, a current source which is used for supplying a first current and coupled with a second voltage, and a second switch which is coupled between the first switch, the grid ends and the current source, wherein, when the first switch is not turned on and the second switch is turned on, the voltage level of the grid ends is determined according to the first current. The circuit provided by the invention can activate the flexibility of the P type power transistor.

Preparation method of high-temperature-resisting, abrasion-resisting, corrosion-resisting and antimagnetic material

The invention discloses a preparation method of a high-temperature-resisting, abrasion-resisting, corrosion-resisting and antimagnetic material, which is used for solving the problems that the existing antimagnetic material has poorer strength and hardness, is easy to corrode and has higher cost in using. The antimagnetic material is composed of the following raw materials by weight percent: 7-10% of Mn, 11-14% of Cr, 7-10% of Ni, 1-2% of V, 1-2% of Si, 1-2% of Mo, 0.5-1% of Nb, 0.1-1% of Ti, 0.3-0.4% of C and the balance of steel materials. The preparation method comprises the following steps: 1) preheating by an electric furnace; smelting by adding the steel material; 2) adding the following raw materials by weight percent: 7-10% of Mn, 11-14% of Cr, 7-10% of Ni, 1-2% of V, and smelting for 25-30 minutes; 3) then adding the following raw materials by weight percent: 1-2% of Si, 1-2% of Mo, 0.5-1% of Nb, 0.1-1% of Ti and 0.3-0.4% of C in the electric furnace, and smelting; 4) sampling ...

Cotton opening mechanism

The invention provides a cotton opening mechanism which is applied to the cotton opening procedure of a blow room system. The cotton opening mechanism is characterized in that a shutter grate mechanism is made into a barrel shape; grid bars are arranged from one end to the other end of the barrel in a spiral shape from sparseness to denseness; a beater roller is in a long cylinder shape; the length of the beater roller is the same as that of the shutter grate of the barrel; beaters are arranged on the beater roller in the spiral shape; a brad-type roller beater, a porcupine beater and a card wire fin comprehensive beater are distributed from one end to the other end of the beater roller and are slightly staggered with the spiral of the shutter grate; the beater mechanism is vertically arranged in the cotton opening mechanism; when in work, a single motor is utilized to make the cylindrical roller beater rotate; cotton flow inflows from the lower end of the shutter grate; and along with ...

Chinese medicine extracting and concentrating process and device thereof

Impurity removal scheme

The invention provides an impurity removal scheme which is applied to cotton blending process of an FA025 multi-compartment cotton blending machine; a cotton outlet beater is additionally arranged at an inlet of a cotton outlet pipe of the FA025 multi-compartment cotton blending machine, a dust grid is arranged below the FA025 multi-compartment cotton blending machine, an impurity falling box is arranged below the dust grid, an impurity outlet is arranged below the dust grid, namely, at the lateral surface of the bottom of the cotton blending machine, and the impurity outlet is provided with a sliding door which can slide upwards through sliding troughs at two sides and used for collecting falling impurities. During the working, a cotton block subjected to cotton blending, is thrown into the dust grid by the cotton outlet beater the dust impurities which become extremely loose in the cotton block subjected to the cotton blending can be discharged from the dust grid and then fall into the ...

Control device and method for eliminating ghost on panels of liquid crystal

A liquid crystal panel residual image elliminating control device includes a detection circuit, a comparator, a control circuit and a discharge circuit electrically connected orderly. It's method includes the following steps: firstly, the detection circuit detects the start signals, the comparator compares the reference voltage and the earthing voltage to detect the switching-off operation of thesupply voltage drop. When the reference voltage is lower than the earthing voltage, the control circuit drives the discharge circuit to release charge in steady-state capacitance in LCD panel to get the aim of eliminating residual image.

Cabin washing device of pure oxygen cabin

A cabin-cleaning device of a pure oxygen cabin comprises an oxygen cabin shell; an oxygen inlet device arranged at any ends inside the oxygen cabin shell; an oxygen exhauster arranged at the other end inside the oxygen cabin shell with respect to the oxygen inlet device. The cabin-cleaning device is characterized in that the oxygen inlet device comprises at least two oxygen inlet ports. Comparing with the prior art, cabin-cleaning device adopts two or more oxygen inlet ports, so as to effectively improve cabin cleaning effect and effectively prevent dead angle in certain spaces inside the cabin generated because of not being sprayed by oxygen due to the straight-line layout of one oxygen inlet port and one oxygen outlet port, thereby remarkably increasing initial oxygen concentration inside the cabin and making the foundation for improving the therapeutic effect of the pure oxygen cabin.

Vibrating mechanism

The invention provides a vibrating mechanism, which is applied to a vibrating cotton feeder in an opening picking process. In the vibrating mechanism, a group of wearable plastic cams is arranged on a rotating shaft of a motor; the cams are uniformly distributed in a transverse direction of a vibrating plate along the rotating shaft; the contour line of each cam is an outer contour curve formed by the orthogonal intersection of two ellipses of the same shape; and a long axis and a short axis of each ellipse are determined according to vibration strength condition. When at work, the cams directly strike the vibrating plate for four times each time the motor rotates 360 degrees, and the striking of each time lasts for a short time which is determined by relationship between the long and short axes of the ellipses of the cams; the vibration frequency of the vibrating plate can be controlled by adjusting the frequency of the motor; under the function of an impulse force, the transient impulse ...

Vibrating grid

The invention provides a vibrating grid which is applied to the opening process of an opener in a cotton opening and cleaning technology. The original fixed connection between a grid mechanism and a machine is changed into a movable connection; both ends of the whole grid are connected with the machine along the tangential direction by springs; the side surface of the grid is connected with the machine through a sliding groove; the grid can slide in the sliding groove in the circular direction; when the opener works, cotton blocks are driven by a beater to hit the grid continuously; and the whole bar grid performs reciprocating vibration continuously with the effect of the springs at both sides so as to increase the collision frequency, collision speed and collision magnitude between the cotton blocks and a grid bar, therefore, the opening frequency of the opener is greatly improved. A spring mechanism is simply additionally arranged in the original grid for the composing of the vibrating ...

Gas purification device, and apparatus and method for measuring noble gas isotopes

Disclosed are a gas purification device, and an apparatus and a method for measuring isotopes of noble gases. The gas purification device includes a housing and a purification mechanism. The housing is provided with a reaction chamber. The reaction chamber is in a vacuum state and is configured to hold a gas sample. The purification mechanism is arranged on the housing and is provided with a cavity. The cavity in the purification mechanism is communicated with the reaction chamber. The purification mechanism is configured to purify the gas sample in the reaction chamber to obtain a purified gas.

A system for on-line measuring the thickness of a continuous casting billet and adjusting a rolling reduction amount

A system for on-line measuring the thickness of a continuous casting billet and adjusting a rolling reduction amount, is capable of giving an accurate, constant and rapid feedback on the thickness of the billet in the continuous casting process online, avoiding the deviation of the rolling reduction amount of the billet in the continuous casting production process which is triggered by the factors such as the capacity of the continuous casting equipment, the execution deviation of the rolling reduction process, the metal solidification attribute such as non-preset expansion and contraction, so as to maximize the function of the continuous casting rolling reduction and improve the solidification quality of the billet.

ELECTROMAGNETIC TRANSDUCER

An electromagnetic transducer is disclosed in the present invention. The electromagnetic transducer includes a frame comprising a receiving space, an upper surface and a lower surface opposite to the upper surface; a suspension including a suspending ring facing the receiving space and at least one pair of elastic arms with projections thereof disposed in an outline of the frame, wherein each of the elastic arms includes a fixing portion mounted on the lower surface and an vibration portion connected with the fixing portion, spaced from the lower surface and providing an vibration approaching and away from the lower surface; a magnetic circuit unit surrounded by the suspending ring for being elastically supported by the suspending ring in the receiving space; and an vibration unit assembled with the frame and facing the magnetic circuit unit. 1. An electromagnetic transducer comprising ,a frame comprising a receiving space, an upper surface and a lower surface opposite to the upper surface;a suspension comprising a suspending ring facing the receiving space and at least one pair of elastic arms with projections thereof disposed in an outline of the frame, wherein each of the elastic arms comprises a fixing portion mounted on the lower surface and an vibration portion connected with the fixing portion, spaced from the lower surface and vibrating toward and away from the lower surface;a magnetic circuit unit surrounded by the suspending ring for being elastically supported by the suspending ring in the receiving space; andan vibration unit assembled with the frame and facing the magnetic circuit unit.2. The electromagnetic transducer of claim 1 , wherein the at least one pair of elastic arms is arranged in parallel and opposite to each other.3. The electromagnetic transducer of claim 1 , wherein the suspension comprises two pairs of elastic arms connected with the suspension ring and surrounding the suspending ring.4. The electromagnetic transducer of claim 3 , ...

ELECTROMAGNETIC TRANSDUCER

An electromagnetic transducer is disclosed in the present invention. The electromagnetic transducer includes a frame including a receiving space; an assistant member made of metal material and embedded in the frame; a magnetic circuit unit having a magnetic gap and received in the receiving space; a diaphragm facing the magnetic circuit unit and mounted on the frame and a voice coil partially received in the magnetic gap for driving the diaphragm to vibrate and generate sound. 1. An electromagnetic transducer comprising ,a frame including a receiving space, an upper surface and a lower surface opposite to the upper surface;an assistant member made of metal material and assembled with the frame;a magnetic circuit unit locating in the receiving space including a magnetic gap;a diaphragm facing the magnetic circuit unit and mounted on the frame;a voice coil partially received in the magnetic gap for driving the diaphragm to vibrate and generate sound.2. The electromagnetic transducer of claim 1 , wherein the assistant member includes a base body attached on the upper surface claim 1 , and at least two first connecting arms extending from the base body in a direction toward the lower surface and penetrating the frame from the upper surface to the lower surface.3. The electromagnetic transducer of further comprising a suspension mounted on the frame by welding the suspension to the first connecting arms.4. The electromagnetic transducer of further comprising a pair of terminals electrically connected with the voice coil via the assistant member.5. The electromagnetic transducer of claim 4 , wherein each first connecting arm comprises a first bending portion extending obliquely from the base body in a direction toward the lower surface and a first soldering pad extending from the first bending portion in a direction parallel to the base body.6. The electromagnetic transducer of claim 5 , wherein the assistant member further comprises a pair of second connecting arms ...

ANTI-INTERFERENCE TEMPERATURE SIGNAL RECEIVING DEVICE AND SIGNAL PROCESSING METHOD

An anti-interference temperature signal receiving device and signal processing method. The device comprises a digital signal processing chip, a transmitting phase-locked loop local oscillator, a fixed intermediate frequency oscillator, a first mixer, a first band-pass filter, a power amplifier, a transceiver module, a second band-pass filter, a low noise amplifier, a receiving phase-locked loop local oscillator, a second mixer, a receiving intermediate frequency filter, a second receiving local oscillator, a third mixer, and a power supply circuit. Because a first intermediate signal, has a frequency consistent with the reference signal frequency, it can be ensured that transmitting and receiving are performed at an identical frequency, while resolving a signal interference problem owing to a phase-locked loop characteristic and resulting in identical signal frequencies of a transmitting signal and a reference signal during synchronization. 1. An anti-interference temperature signal receiving device comprising a digital signal processing chip , a transmitting phase-locked loop local oscillator , a fixed intermediate frequency oscillator , a first mixer , a first band-pass filter , a power amplifier , a transceiver module , a second band-pass filter , a low noise amplifier , a receiving phase-locked loop local oscillator , a second mixer , a receiving intermediate frequency filter , a second receiving local oscillator , a third mixer , and a power supply circuit , wherein ,the digital signal processing chip is configured to generate a transmitting signal and transmit the transmitting signal to the transmitting phase-locked loop local oscillator, generate a reference signal and transmit the reference signal to the receiving phase-locked loop local oscillator, and process a third intermediate signal to obtain temperature data;the transmitting phase-locked loop local oscillator is configured to receive and process the transmitting signal to obtain a stable transmitting ...

A FAST-RESPONSE HORIZONTAL VIBRATION MICRO MOTOR

A fast-response horizontal vibration micro motor that includes a housing, a cover plate, a vibration assembly and coils. The cover plate is installed on the housing; the vibration assembly is suspended in the installation space; the coils are located at positions a certain distance above the vibration assembly; the vibration assembly can perform reciprocating vibration in a direction substantially parallel to the bottom surface of the housing, and also enables the two elastic supporting members located on the two opposite sidewalls to be correspondingly stretched and compressed during vibration; the vibration assembly includes a vibration block, and the vibration block is provided with at least three installation through holes and permanent magnets installed in the installation through holes. The arrangement of the three permanent magnets increases the response speed of the motor, and the arrangement of the two serially-connected coils also increases the response speed of the motor. 115-. (canceled)16. A fast-response horizontal vibration micro motor , comprisinga housing,a cover plate for forming an installation space with said housing, provided on said housing,elastic supporting members provided on two opposite walls of said housing,a vibration assembly suspended in said installation space through positioning of said elastic supporting members, anda coil located at a certain distance from a surface of said vibration assembly,said vibration assembly is operable to perform reciprocating vibration in a direction substantially parallel to a bottom surface of said housing under the action of magnetic field force, and the two elastic supporting members provided on two opposite walls are operable to be extruded and be compressed during the vibration,wherein,said vibration assembly comprises a vibration block, provided with at least three installation through holes, and permanent magnets installed in the installation through holes, a first connecting part, fixed on one ...

Leaf cutter is removed to northeast chinese yew plant tissue culture material

本实用新型涉及一种东北红豆杉植物组培材料除叶切割器，该切割器中隔板的通孔处右侧固定连接空心轴；从动齿轮通过轴承安装在空心轴上并与旋转驱动装置连接；空心轴的右侧固定连接固定齿轮；支架与从动齿轮固定连接，定轴一端与从动齿轮固定连接，另一端与支架固定连接；支架上加工有入料孔，入料孔与隔板的通孔相对；滚动齿轮和滚刀一体连接并通过轴承安装在定轴上；滚动齿轮与固定齿轮啮合。本实用新型不仅能够增强针叶的去除效果，而且操作简便，提高了工作效率。

A method for preparing high-purity chlorine dioxide by using methanol and hydrogen peroxide as reducing agent

The invention discloses a method for preparing high-purity chlorine dioxide by using methanol and hydrogen peroxide as reducing agent. The method comprises: concentrated sulfuric acid and sodium chlorate solution are injected into the generator to form the reaction mother liquid. The reaction mother liquid shall be maintained a certain acidity, temperature and sodium chlorate content, and then it is reacted with the reducing agent (methanol and hydrogen peroxide) to produce chlorine dioxide gas and by-product sodium sulfate. The chlorine dioxide gas is cooled and absorbed by low temperature chilled water to obtain an aqueous solution of chlorine dioxide, and by-products are recycled. The chlorine dioxide solution produced by the aforementioned method has a 60-70% reduction in the Cl2 content and 14-20% reduction in sulfuric acid consumption than that of the chlorine dioxide produced by using a single methanol reducing agent, and the by-product produced is sodium sulfate, not sodium hydrogen sulfate, so neutralization reaction treatment is not required.

A method for hydrogen peroxide based chlorine dioxide production process with a vertical generator

A method for hydrogen peroxide based chlorine dioxide production process with a single vessel vertical generator is disclosed. The process involves mixing a sodium chlorate solution (600-700g/l) and a hydrogen peroxide solution (27wt%-60wt%) in sodium chlorate feed pipes, feeding into the generator circulation system from lower circulation pipe of the generator; and further feeding a concentrated sulfuric acid (93wt%-98wt%) solution into the generator circulation system through the nozzle of the reboiler after being diluted with deionized water and reducing the concentration down to 60wt%-65wt%, for complete and thorough reaction by application of a circulation pump. The process generates a stream of highly purified chlorine dioxide solution with a low byproduct concentration of chlorine of 0.01 ¨0.08g-Cl2/l-ClO2, by controlling multiple parameters in the generator, e.g. liquor acidity between 2-5N, gauge pressure at -72~-85kPa, temperature at 60-80 degree C, liquor density at 1.4~1.8g/cm3, and sodium chlorate concentration at 1.8~3.3mol/l. The process does not emit waste acid into the environment, while generates neutral salt cake as byproducts.

防泄漏生物净化装置

本实用新型公开了一种防泄漏生物净化装置，包括箱体和用于收集并引导箱体的顶部的水流的排水组件；箱体的底部设有用于收集水流的存水池；排水组件安装于箱体；排水组件包括：集水槽和导流组件；集水槽固定至箱体顶部的周向位置；集水槽的底部设有若干排水孔；箱体的侧壁上设有用于供导流组件穿过的通孔；导流组件穿过通孔并一端连接至排水孔且另一端延伸至箱体底部的存水池；排水组件还包括用于密封集水槽和箱体的连接部位的第一密封层；第一密封层沿着集水槽与箱体的连接部位设置；第一密封层至少一部分覆盖集水槽与箱体的连接部位且剩余部分覆盖箱体。防泄漏生物净化装置的集水槽和导流组件的结构稳定性高，能够有效进行雨水收集。

A system for on-line measuring the thickness of a continuous casting billet and adjusting a rolling redction amount

An online system for measuring the thickness of and adjusting a rolling reduction amount of a continuous casting slab, characterized by: comprising an online continuous casting slab distance measurement apparatus, a casting slab thickness feedback system and a continuous casting machine rolling reduction adjustment system, wherein the online continuous casting slab distance measurement apparatus, which is fixed above a slab drawing section of a continuous casting machine, measures the distance from a source point to each specified point of a casting slab at a certain frequency; the casting slab thickness feedback system is used to calculate the thickness of the casting slab according to the measured distance, and then feed a result back to a secondary system of a continuous casting system; and the current continuous casting machine rolling reduction adjustment system is used to adjust a rolling reduction amount.

Planting method of annual two-planting and four-harvesting in red-soil rice field

Method for processing three-dimensional scanning data, three-dimensional scanning method, and three-dimensional scanning system

A method for processing three-dimensional scanning data is provided. The method includes acquiring a first coordinate set sequence by a target optical tracker measuring a first target ball group when the target optical tracker is at a plurality of different target positions, and a position of the first target ball group remains unchanged. A second coordinate set sequence is obtained by a laser tracker measuring a second target ball group when the target optical tracker is at the plurality of different target positions, a position of the laser tracker remains unchanged, and a relative position of the second target ball group to the target optical tracker remains unchanged. A target transformation matrix between a coordinate system of the target optical tracker and a coordinate system of the laser tracker is determined based on the first coordinate set sequence and the second coordinate set sequence.

Electromagnetic transducer having a suspending ring disposed for increased vibrating space

An electromagnetic transducer is disclosed in the present invention. The electromagnetic transducer includes a frame comprising a receiving space, an upper surface and a lower surface opposite to the upper surface; a suspension including a suspending ring facing the receiving space and at least one pair of elastic arms with projections thereof disposed in an outline of the frame, wherein each of the elastic arms includes a fixing portion mounted on the lower surface and an vibration portion connected with the fixing portion, spaced from the lower surface and providing an vibration approaching and away from the lower surface; a magnetic circuit unit surrounded by the suspending ring for being elastically supported by the suspending ring in the receiving space; and an vibration unit assembled with the frame and facing the magnetic circuit unit.

Fast-response horizontal vibration micro motor

A fast-response horizontal vibration micro motor that includes a housing, a cover plate, a vibration assembly and coils. The cover plate is installed on the housing; the vibration assembly is suspended in the installation space; the coils are located at positions a certain distance above the vibration assembly; the vibration assembly can perform reciprocating vibration in a direction substantially parallel to the bottom surface of the housing, and also enables the two elastic supporting members located on the two opposite sidewalls to be correspondingly stretched and compressed during vibration; the vibration assembly includes a vibration block, and the vibration block is provided with at least three installation through holes and permanent magnets installed in the installation through holes. The arrangement of the three permanent magnets increases the response speed of the motor, and the arrangement of the two serially-connected coils also increases the response speed of the motor.

Electromagnetic transducer

An electromagnetic transducer is disclosed in the present invention. The electromagnetic transducer includes a frame including a receiving space; an assistant member made of metal material and embedded in the frame; a magnetic circuit unit having a magnetic gap and received in the receiving space; a diaphragm facing the magnetic circuit unit and mounted on the frame and a voice coil partially received in the magnetic gap for driving the diaphragm to vibrate and generate sound.