74results about How to "Accurate opening and closing" patented technology

The invention discloses an automatic hydraulic control leaping weir initial rainwater catch basin and a flow closure method. The automatic hydraulic control leaping weir initial rainwater catch basin and the flow closure method are suitable for the improvement of a bypass flow rainwater pipeline. The catch basin comprises a catch basin body, a flow inlet pipe, a water closure pipe, an automatic hydraulic control weir body, four limiting blocks, a floating cylinder, sector flow side baffles, flow discharging small holes, a separation wall, an overflowing pipe, a manhole, steps, a weir plate shaft and the like. The flow closure method is conducted by the catch basin and when it rains, flow of the water inlet pipe is enlarged along with the enlargement of rainfall. When the flow of the water inlet pipe is enlarged to a certain degree, a flow-jetting outer curve crosses the automatic control weir. According to the automatic control weir, a weir plate is opened under the buoyancy of the floating cylinder and the water flow in the flow inlet pipe is completely abandoned until the amount of the water flow of the flow inlet pipe is nearly zero. Due to the flow discharging action of the flow discharging small holes, the floating cylinder descends, the weir plate is reset, and clean rainwater can enter a water receiving body at the later period. The catch basin is completely controlled through hydraulic power, other control devices are not needed, operation is stable, maintenance is simple, and management is convenient.

The invention discloses a side-suction type range hood. The range hood comprises a shell body, a panel and a smoke gathering mechanism, wherein the face plate and the smoke gathering mechanism are positioned on the front side of the shell body, an air inlet hole is formed in the face plate, and the smoke gathering mechanism comprises a smoke baffle hinged to the face plate and capable of opening or closing the air inlet hole. The range hood is characterized in that the smoke gathering mechanism further comprises two fan-wing mechanisms, each fan-wing mechanism comprises a fan-wing-shaped fan-wing main plate which is in linkage with the smoke baffle and is of a fan-wing shape with a lower part smaller than an upper part, the two fan-wing main plates can be located at first positions on thetwo sides of the shell body when the smoke baffle is closed, and the two fan-wing main plates can be at least partially located at the front side of the face plate and located at second positions on the two sides of the smoke baffle at the same time when the smoke baffle is opened. Compared with the prior art, the range hood has the advantages that the fan-wing mechanisms used for gathering smokeare arranged on the left side and the right side, the fan wing mechanisms can be unfolded according to a preset track to block the fleeing smoke, and the fan-wing main plate, the smoke baffle and theshell body form a stable negative-pressure smoke gathering area, so that the smoke collection effect is greatly enhanced in all directions.

Disclosed herein is a valve assembly for a variable swash plate compressor. Since an opening hole of a suction reed of the valve assembly for the variable swash plate compressor is enlarged toward a suction port of a valve plate and refrigerant is also introduced into a cylinder bore through the opening hole when the suction port is opened, performance of a compressor may be enhanced by an increase in flow rate.

The invention discloses a backpack type electric fertilizer applicator which comprises a charging barrel. The bottom of the charging barrel is provided with a discharging opening. A sliding plate is arranged below the discharging opening to be matched with the discharging opening. The lower part of the charging barrel is connected with a base of which the lower part is connected with a bottom cover. The base is provided with a fan blade in which a shaft sleeve is arranged. The shaft sleeve is provided with a rotary shaft of which the upper end is rotatably matched with the bottom of the charging barrel through a bearing. The lower end of the rotary shaft passes through the base to be connected with a helical tooth tray. A motor fixing seat and a panel are arranged below the base. One side of the motor fixing seat is provided with a motor output shaft which passes through the motor fixing seat to be connected with a small gear. The small gear is engaged with the helical tooth tray. The helical tooth tray drives the rotary shaft. The panel is provided with a power switch and a charging socket. A battery box is arranged below the base, and a battery is arranged in the battery box. The battery supplies power to the motor. The power switch is connected between the battery and the motor. The shaft sleeve is of an excentric shaft sleeve. The sliding plate is provided with a vibrating ring. The excentric shaft sleeve is contacted with the vibrating ring for driving the sliding plate to swing. The pendular sliding plate and the discharging opening are opened and closed, and the bottom of the charging barrel generates micro vibration, so that the chemical fertilizer falls down from the discharging opening.

The present invention relates to the field of preparation equipment for neutron radiation protection materials, in particular to a detection device for neutron radiation protection concrete, which includes a frame on which a detection cylinder is arranged, and a delivery port is opened on the upper part of the detection cylinder. And the detection tube is provided with a delivery tube docked with the delivery port through a bracket, the upper part of the inner right side of the detection tube is inlaid with a radiation emitter, and the lower part is inlaid with a radiation receiver that matches the position of the radiation emitter; The purpose of the invention is to provide a detection device for neutron radiation-proof concrete, through the cooperation of the radiation emitter and the radiation detector in the detection cylinder, and by measuring the blocking situation of the radiation substance by the concrete slurry, the particle in the concrete slurry can be determined. Whether the content is qualified and the distribution is uniform, and then it can ensure that the formed concrete block is solidified by qualified concrete slurry, which greatly improves the qualified rate of the formed radiation-proof concrete block, and reduces subsequent processing costs and waste of raw materials cost.

The invention provides a press button of an electronic device. The press button of the electronic device comprises a casing, a press button switch, a first press button and a second press button. A first through hole is formed on a lateral wall of the casing. The press button switch and the first through hole are correspondingly arranged on the inner side of the casing. The first press button is provided with a base portion provided with a hollow portion and an adapting portion, wherein the base portion is adhered to and fixed on the outer surface of a lateral wall of the casing, the adapting portion protrudes towards the outer side of the base portion and the center direction of the hollow portion and can elastically deform in the inside direction and the outside direction, and the center of the adapting portion is provided with a second through hole corresponding to the first through hole. The second press button is embedded with the adapting portion and provided with a head portion and a shaft portion extending from the head portion to the inner side, the shaft portion is inserted into the first through hole and the second through hole, and the top end of the shaft portion can be contacted with or separated from the press button switch. The water proofing can be achieved through a simple structure, and operation feeding of an operator and universal performance of parts are improved.