Agricultural land concealed pipe water level water quality co-controlling drainage

The invention discloses a water level and quality jointly controlled drain device of a farmland underground drain pipe, relates to a water level and quality jointly controlled drain device of a gate of a farmland underground drain pipe, and belongs to the technical field of agricultural soil and water engineering. The upper end of a floating ball device is provided with a spring piece control device which is connected with a water quality detection device, and the lower end of the floating ball device is connected with the gate which is provided with an underground pipe transversely, and the height of the gate is greater than that of the underground pipe. The water level and quality jointly controlled drain device can control the underground water level according the growth needs of crops,and control the automatic opening of the gate and drainage volume according to the water level and quality of underground water of a farmland, thereby ensuring that a soil reservoir can give a full play ...

Agricultural land concealed pipe water level water quality co-controlling drainage

The invention discloses a water level and quality jointly controlled drain device of a farmland underground drain pipe, relates to a water level and quality jointly controlled drain device of a gate of a farmland underground drain pipe, and belongs to the technical field of agricultural soil and water engineering. The upper end of a floating ball device is provided with a spring piece control device which is connected with a water quality detection device, and the lower end of the floating ball device is connected with the gate which is provided with an underground pipe transversely, and the height of the gate is greater than that of the underground pipe. The water level and quality jointly controlled drain device can control the underground water level according the growth needs of crops, and control the automatic opening of the gate and drainage volume according to the water level and quality of underground water of a farmland, thereby ensuring that a soil reservoir can give a full play ...

Basketball stand for physical education

The utility model provides a basketball stand for physical education, including base, first dead lever, first net, first board, second dead lever, second net and second board, first stand is installedto the top left end of base, the inside of first stand is provided with first pneumatic cylinder, first spliced pole is installed at the top of first pneumatic cylinder, the top at first spliced poleis installed through a fixing device to first dead lever, first backboard is installed to the left end of first dead lever, install a rim on the left surface of first backboard, first net is passed through the magic subsides and is installed on a rim, first board is installed on first stand through first fixed column. The utility model discloses a cooperation of first stand, second stand and third stand is used for can carry out the altitude mixture control according to teaching need, the teacher's of being convenient for pedagogical what student's exercise.

Water level and water quality layering control weir of drainage ditch of rice field

The invention relates to a water level and water quality layering control weir of a drainage ditch of a rice field. Three types of five weir plates in different heights are designed according to the characteristics of each growth period of rice; the heights of the five weir plates are determined according to the buried depth of underground water required by the rice in different growth periods; by combining the five weir plates, outlet control weirs in different heights of the drainage ditches can be formed, and the drainage control requirements of rice reviving, early stage of tillering, late stage of tillering, booting stage, tasseling stage, milky ripeness stage, yellow ripening stage and late stage of fertilizing; two hand grabs are arranged on the lateral surface of each weir plate; an arc rubber waterstop band is arranged at the bottom of each weir plate which ensures overall seamless joint water stop among the weir plates; doorframe grooves are arranged on two sides of the drainage ...

Automatic starting gate with draining control in agricultural field

An automatically openable gate for controlling the draining of agricultural field structurally features that the rotary bearing for the joining spring on the top of the gate and the rotary bearing for the turn buckle on the top of right frame of the gate are respectively installed to the tops of the gate and the right frame, and the tensional spring and turn buckle are arranged between said two bearings. Its advantages are simple structure and low cost.

Automatic starting gate with draining control in agricultural field

Adjustable agricultural drain water level control weir

The invention relates to an adjustable control weir for water level of farmland drain. Retaining weir plate is set in the drain. One end is connected with rotary shaft in horizontal direction and the other end is the top end of retaining weir plate. The control rotary table is connected with the rotary shaft in vertical direction. Truncated cone gear in horizontal direction is set at the lower end of rotary shaft in vertical direction and the truncated cone gear is mated with cone gear in vertical direction. The cone gear in vertical direction is connected with the rotary shaft in horizontal shaft and the pointer on the control rotary table points to dial. Nut rotary table is mated with tension steel bar by screw and friction braker is connected at the lower end of tension steel bar. Merits of invention are that according to soil moisture and farmland underground water level the height of control weir is adjusted; the water level of farmland drain is controlled; and the depth of farmland ...

Photovoltaic unfolding wing box type mobile light storage direct flexible super charging station

The invention discloses a photovoltaic unfolding wing box type mobile light storage direct flexible super charging station. The charging station comprises a container body, a supporting assembly arranged on the container body, a walking device arranged at the lower end of the container body, and a plurality of charging piles, a battery energy storage system and a bidirectional power converter which are arranged in the container body; a plurality of solar panels are arranged on the supporting assembly; the container body comprises a bottom plate and supporting plates arranged at the two ends of the bottom plate. The charging station can be flexibly configured in a small place, the solar panel is supported through the supporting assembly for solar power generation, the electric energy output by the bidirectional power converter and the solar electric energy are stored through the battery energy storage system and then are subjected to direct-current output through the charging pile, and a ...

Adjustable agricultural drain water level control weir

The invention relates to an adjustable control weir for water level of farmland drain. Retaining weir plate is set in the drain. One end is connected with rotary shaft in horizontal direction and theother end is the top end of retaining weir plate. The control rotary table is connected with the rotary shaft in vertical direction. Truncated cone gear in horizontal direction is set at the lower endof rotary shaft in vertical direction and the truncated cone gear is mated with cone gear in vertical direction. The cone gear in vertical direction is connected with the rotary shaft in horizontal shaft and the pointer on the control rotary table points to dial. Nut rotary table is mated with tension steel bar by screw and friction braker is connected at the lower end of tension steel bar. Merits of invention are that according to soil moisture and farmland underground water level the height of control weir is adjusted; the water level of farmland drain is controlled; and the depth of farmland ...