52results about How to "Increase water pressure" patented technology

The invention discloses a high-pressure pulse meat flushing device, which relates to the technical field of meat processing, and comprises a cleaning treatment box, a top rotating ring rail groove frame, a bottom annular guide rail, a vertical linear guide rail, a side screw rod guide rail and a high-pressure pulse flushing adjusting assembly, under the cooperation of the high-pressure pulse flushing adjusting assembly, a picking piece or a shifting piece is adopted as an auxiliary cleaning tool on the whole, special parts such as fascia, connective tissue, hair and a grease layer of meat can be treated, better cleaning conditions are created for high-pressure pulse water flow, and the cleaning efficiency is improved. And the cavitation effect of ultrasonic waves is combined with high-pressure pulse water flow flushing, so that meat can be cleaned from inside and outside at the same time, the cleaning effect is greatly improved, and the cleaning efficiency and quality are improved.

The utility model discloses a dish-washing machine, relates to the technical field of kitchen and bath machinery, and aims to solve the problem that residual washing water of the dish-washing machine is scattered, the dish-washing machine comprises a dish-washing machine body, a dish basket assembly and a spraying assembly, the dish-washing machine body is provided with a dish-washing machine inner cavity, and a dish basket and the spraying assembly are arranged in the dish-washing machine inner cavity. The spraying assembly comprises a spraying pipe, a communicating shaft, a spraying arm and an abutting disc, one end of the spraying pipe is used for being connected with external washing water, the other end of the spraying pipe is connected with the communicating shaft, a plurality of water outlet holes communicating with the spraying pipe are formed in the peripheral face of the communicating shaft, the spraying arm is rotationally connected with the communicating shaft and provided with a water storage cavity communicating with the water outlet holes, and the abutting disc abuts against the spraying arm. The spraying holes are formed in the spraying arm at intervals and communicate with the water storage cavity, the abutting-against disc is arranged below the spraying arm and connected to the end, away from the spraying pipe, of the communicating shaft, and a pre-discharging opening is formed in the side, facing the abutting-against disc, of the spraying arm. The dish washing machine is used for improving the use experience of a user.

The utility model relates to the technical field of cleaning of car washers, in particular to a cleaning strength adjusting device for a car washer, which comprises a water tank. A water pipe is installed at the end, away from the water tank, of the pipeline, a water gun head is connected to the end, away from the pipeline, of the water pipe, a filter screen is installed at a water inlet, extending into the water tank, of the pipeline, and the pipeline and the water pipe provide a path for conveying a water source; the variable-frequency water pump is responsible for conveying a water source of the cleaning vehicle, the distance measuring assembly comprises a fixing piece installed on the outer side face of the water gun head, an installation module, an infrared emitting module and an infrared receiving module, and the infrared emitting module is used for emitting infrared light to measure the distance between the spray head and a target; the distance between the water gun head and the vehicle body is detected in real time through the infrared distance measuring transmitter and the infrared distance measuring receiver, water pressure adjustment is achieved in combination with the variable-frequency water pump, automatic pressure reduction is achieved when the vehicle is close to the vehicle body, and vehicle paint is prevented from being damaged.

The utility model discloses a pump head structure of a four-stage high-pressure relay fire pump, which comprises a pump head shell, a driving connecting mechanism is arranged at one end of the pump head shell, a pump water cavity is formed in the pump head shell, a pump shaft is rotatably arranged in the pump water cavity, the driving connecting mechanism is coaxially connected with the pump shaft, and the pump shaft is connected with the pump head shell. A water inlet is formed in the end, away from the drive connecting mechanism, of the pump head shell, a water outlet is formed in the side wall of the end, close to the drive connecting mechanism, of the pump head shell, and the water inlet and the water outlet both communicate with the water pumping cavity. The pump shaft is sleeved with at least four impellers, each impeller comprises a circular mounting plate, a center seat is formed in the middle of each mounting plate, a connecting hole is formed in the middle of one surface of each center seat, and the connecting holes are matched with the pump shaft. By improving the structure of the pump head impeller, higher water pressure can be generated.

The utility model relates to building water supply pipe network technical field discloses a kind of building water supply pipe network water pressure balance regulating valve, including adjusting assembly, adjusting assembly is used to adjust the water pressure adjustment of near end / low resistance branch, adjusting assembly includes valve body, extension pipe, fixed block and movable block, valve body and extension pipe are fixedly connected between, valve body and extension pipe are connected with corresponding pipeline respectively, and fixed block and extension pipe are fixedly connected, and elastic connection between movable block and fixed block, the middle part of the fixed block is provided with through-hole, and movable block is overall cone face, movable block and fixed block are in close contact, release pressure pipe is set around on fixed block, each release pressure pipe is fixedly connected with corresponding fixed block, water flow is buffered by the blocking of movable block, so as to buffer the pressure of water flow, and under the elasticity of movable block, avoid the damage of component under rigid buffering.

The present invention relates to the field of electrical detection technology, and in particular to an intelligent detection device for waterproof performance of electrical accessories. It includes a workbench, a discharge table and a water baffle, etc.; the workbench is fixedly connected to the discharge table; the workbench is fixedly connected to the water baffle; the discharge table is located inside the water baffle. Water is sprayed out from the water spray hole, and the sprayed water will contact the accessories, thereby spraying the accessories. Since the spherical plate is hemispherical and the water spray holes are distributed throughout the spherical plate, the accessories are continuously sprayed with water during spraying, thereby solving the problem that an area cannot be sprayed uninterruptedly, so that there is less water in the gap and the impact force is small, resulting in the spray water being unable to enter the interior of the accessories through the gap, resulting in detection errors. The hemispherical spherical plate can not only directly increase the spraying area, but also the sponge on the inner wall of the spherical plate can absorb the water splashed back by spraying on the accessories, thereby avoiding subsequent underwater dripping onto the workbench, resulting in the need for subsequent cleaning.

This utility model relates to a turbid circulating water pressurization system for a finishing mill, belonging to the field of mechanical equipment technology. It includes a main inlet pipe, the outlet of which is connected to the cooling circuit of the finishing mill. A centrifugal pump is installed on the main inlet pipe, driven by a variable frequency motor. The centrifugal pump pressurizes the turbid circulating water and pumps it into the cooling circuit of the finishing mill. An inlet butterfly valve, an inlet pressure gauge, and an inlet pressure sensor are installed on the inlet side of the main inlet pipe, and an outlet butterfly valve, an outlet pressure gauge, and an outlet pressure sensor are installed on the outlet side. The inlet pressure sensor, outlet pressure sensor, and variable frequency motor are connected to a PLC control cabinet. The inlet and outlet pressure sensors detect the water pressure at the inlet and outlet of the main inlet pipe and feed it back to the PLC control cabinet. Upon receiving the signal, the PLC control cabinet adjusts the speed of the variable frequency motor. This application can locally increase the turbid circulating water supply pressure of the finishing mill rolls, improve the cooling effect of the roll rings, and ensure the surface hardness of the roll rings.

The utility model discloses a bag cage convenient for quick mounting and dismounting of filter bags, and relates to the technical field of bag cages, the bag cage comprises a top ring and a transfer box, the transfer box is located right below the top ring, a plurality of first extension pipes are fixed on the peripheral side surface of the transfer box in a penetrating manner, and the plurality of first extension pipes are distributed in a circular array manner; two symmetrically-arranged limiting rods are fixed to the inner wall of the first extending pipe, and a first piston is slidably arranged in the first extending pipe. The water supply assembly is used for supplying water to the interior of the first extension pipe, so that the water pressure in the first extension pipe is increased, a first piston in the first extension pipe can be pushed to slide outwards by virtue of the water pressure, and a fixed block extends towards the exterior of the first extension pipe, so that a plurality of supporting rods are driven to expand outwards, and the plurality of supporting rods can support and tension the filter bag; after the water supply assembly draws away water in the first extension pipe, the multiple supporting rods can be folded towards the center, and therefore the filter bag can be conveniently and safely assembled and disassembled on the bag cage in a labor-saving mode.

A food waste disposer and a sink incorporating the disposer are disclosed. The disposer includes: a housing with an internal cavity, and a flat plate within the cavity. The flat plate is positioned relative to the top wall of the cavity and relative to the bottom wall, dividing the cavity into an upper chamber above the flat plate and a lower chamber below the flat plate. The upper side wall of the lower chamber has a feed inlet penetrating its own wall thickness, and the lower part of the lower chamber has a discharge outlet. The upper chamber has a first water outlet and a water inlet for external water supply, the first water outlet being located on the flat plate to connect the upper and lower chambers. A pulverizing component is disposed within the lower chamber and operates under the drive of a driving mechanism to pulverize food waste entering through the feed inlet. In this invention, the flat plate at the top of the lower chamber and the top wall of the cavity above the flat plate can prevent the noise generated by the pulverizing component from propagating upwards, thereby reducing operating noise.

The utility model relates to mechanical equipment field discloses a cooling water spraying device for styrene storage tank, including the jar body, the outer wall fixedly connected with fixed block of jar body, the inner wall fixedly connected with the direct current pipe of fixed block, the top fixedly connected with ring pipe of direct current pipe, the inner wall fixedly connected with a plurality of spraying mechanism of ring pipe, the outer wall fixedly connected with a plurality of support of jar body, the outer wall fixedly connected with strengthening mechanism of jar body, the spraying mechanism includes the connecting pipe, the outer wall fixedly connected in the inner wall of ring pipe of connecting pipe, the bottom fixedly connected with the base of connecting pipe, in the utility model, through the motor of starting the inner wall of sliding block, motor drive force drives gear to rotate, under the cooperation of inner and outer rack plate of the inner wall of base, gear rotation drives sliding block to move in the base, and connecting column and connecting plate cooperate transmission force.

This invention relates to the field of wastewater treatment technology, specifically to a dynamic jet negative pressure sludge discharge device, comprising a gas-liquid separation chamber, a negative pressure sludge suction pipe, a gas-liquid separation net, a high-pressure air pump, a high-pressure water pump, a sludge loosening component, a jetting component, a lifting plate, a hydraulic driver, a first hydraulic telescopic rod, a second hydraulic telescopic rod, a third hydraulic telescopic rod, a first connecting rod, a second connecting rod, a feed pipe and lifting sleeve, and other components such as the sludge loosening component and the jetting component. This invention achieves water deaeration through the cooperation of the gas-liquid separation chamber, the gas-liquid separation net, and the high-pressure air pump; loosens the sludge through components such as the aeration rods of the sludge loosening component; and washes and breaks up the sludge through components such as the arc-shaped shovel and the anti-clogging nozzles of the jetting component. The second and third hydraulic telescopic rods, along with other components, allow for adjustment of the angle and height of multiple components. This solves the problems of incomplete cleaning, high energy consumption, poor adaptability, and easy clogging in existing sludge discharge devices, achieving efficient, precise, and stable cleaning of sludge at the bottom of the tank under different working conditions.

According to the cleaning structure of the shaver, when the driving assembly drives the tool bit assembly to conduct shaving, the impeller is driven to rotate reversely, so that beard residues (broken beards) are sucked into the containing cavity, and the collection efficiency of the beard residues is improved. In the cleaning process, cleaning liquid flows into the negative pressure cavity, so that the impeller and the negative pressure cavity form a water pump structure, under the combined action of forward rotation force and centrifugal force of the impeller, beards in the containing groove are thrown into the cleaning groove and finally discharged to the outside through the cleaning groove, the cleaning effect is better, beard residues are conveniently discharged, and the cleaning efficiency is improved. And self-cleaning circulation in the shaver can be realized. Due to the fact that the distance exists between the transmission assembly and the inner wall of the negative pressure cavity, the transmission assembly is in a suspended state in the negative pressure cavity, friction force cannot be generated between the transmission assembly and the inner wall of the negative pressure cavity in the moving process, the rotating effect of the transmission assembly is better, and then the shaving effect is better.

The present invention discloses a surface cleaning device with good dirt suction effect, comprising a dirt suction fan and a floor brush provided with a roller brush, the floor brush being provided with a dirt suction port facing the roller brush, a comb tooth member with multiple comb teeth and a scraper, the comb tooth member and the scraper respectively abut against the roller brush to scrape off dirt on the surface of the roller brush, the dirt suction fan sucks away the scraped dirt / dirty liquid through the dirt suction port, the comb tooth member extends downward from the top outer side of the dirt suction port to the dirt suction port to partially cover the dirt suction port to increase the suction pressure, and at the same time the comb teeth guide the sucked dirt or dirty liquid toward the dirt suction port, most of the dirty liquid and dirt sucked from the surface to be cleaned to the dirt suction port as well as entangled objects such as hair can easily enter the dirt suction port, the dirt suction effect is good, the dirt suction efficiency is high, thereby bringing a good experience to customers.

The application discloses a kind of segmented hole sealing multi-tube synchronous grouting device and construction method, belong to grouting equipment technical field, including multiple grouting pipes, multiple segmented covers, multiple segmented membrane bags and multiple pressure valves;Multiple segmented covers are set on multiple grouting pipes according to preset grouting section distance interval along grouting pipe length direction;Each grouting pipe includes inlet section pipe body and outlet section pipe body, inlet section pipe body is provided with membrane bag inlet, outlet section pipe body is provided with grouting port, and the membrane bag inlet and grouting port of each grouting pipe are set according to preset grouting section distance interval;Each segmented membrane bag is located at adjacent grouting section boundary and wraps corresponding membrane bag inlet;Each pressure valve is installed inside grouting pipe and located in the pipe section covered by segmented membrane bag, and the pressure valve is configured to: when the pressure of liquid in the pipe is less than the set threshold, it is closed, and it is opened and kept irreversible opening after exceeding the threshold.The application realizes reliable segmented hole sealing, prevents grouting and multi-tube synchronous grouting, improves construction efficiency and grouting quality.

This invention discloses a method for producing low-temperature resistant plastic granules for pipes, comprising the following steps: Step 1, cleaning the waste material, and then adding the raw material to a high-speed mixer to obtain a premix; Step 2, adding the premix to a twin-screw extruder and heating it to a molten state for plasticization. This invention relates to the field of plastic granule preparation technology. In this method for producing low-temperature resistant plastic granules for pipes, wastewater is discharged into a circulation tank, driving a turbulence impeller to rotate. While the wastewater is filtered through a grading filter plate, a scraper removes dirt from the surface of the grading filter plate, preventing clogging. Furthermore, the drainage area of ​​the drainage channel can be increased by adjusting the water flow, increasing the water pressure and the impact force on the turbulence impeller, thus increasing the thrust on the scraper and improving the cleaning effect.

The invention relates to the technical field of washing equipment, particularly provides a water inlet system of washing equipment and the washing equipment, and aims to solve the problem that the dissolving effect of a detergent or a softener is poor due to the mode that an existing treating agent is directly fed or enters along with water flow. The water inlet system of the washing equipment comprises a detergent storage cavity, a softener storage cavity, a pump device, a water inlet pipeline, a first switching valve, a second switching valve and a temporary storage cavity, wherein the first switching valve, the second switching valve and the temporary storage cavity are sequentially arranged on the water inlet pipeline; the detergent storage cavity and the softener storage cavity are both communicated with the first switching valve, a suction port of the pump device is communicated with the second switching valve, and an outlet of the pump device is communicated with the water inlet pipeline between the second switching valve and the temporary storage cavity. Through combined arrangement of the detergent storage cavity, the softener storage cavity, the pump device, the first switching valve, the second switching valve and the temporary storage cavity, a treating agent can be mixed and dissolved with water in advance, the treating agent is dissolved in advance, the washing effect is improved, and damage to clothes is reduced.

The application relates to the technical field of pipeline cleaning, and discloses a pipeline cleaning device, which comprises a walking main body and a triggering main body, the walking main body is externally fixedly connected with a guide rail, the guide rail is internally provided with a guide groove, and the output end of the walking main body is fixedly connected with a servo motor. The servo motor is arranged to drive the double-thread screw rod with mirror image threads along the central rod to rotate, so as to control the mutual approach or separation of the outer sliding blocks, simultaneously make the movable block slide outside the guide rod, simultaneously make the movable block slide inside the guide rail, make the rotating support rod rotate inside the rotating base, and then control the triggering main body to separate from or approach the walking main body, so as to change the unfolding width of the walking mechanism, facilitate the pipeline cleaning device to automatically adjust the unfolding angle of the walking mechanism according to the pipe wall width, and solve the problem that the pipeline cleaning device cannot adjust the unfolding angle of the walking mechanism according to the pipe wall width.

The utility model relates to the technical field of spraying devices, in particular to a pest control spraying device. The utility model provides a pest control spraying device with a better spraying effect. A spraying device for pest control comprises a pesticide box, a cover, a hard water pipe, a water hose, a spray head, a connecting frame, a water pump, an inflator, a push rod, a push block and the like, the pesticide box is slidably connected with the cover, the pesticide box is fixedly connected with the water pump, the water pump is communicated and fixedly connected with the water hose, the other end of the water hose is communicated and fixedly connected with the hard water pipe, and the other end of the hard water pipe is communicated and rotationally connected with the spray head. The hard water pipe is fixedly connected with a connecting frame, the connecting frame is fixedly connected with an inflator, the connecting frame is rotationally connected with a push rod, and the push rod is fixedly connected with a push block. By means of the inflator, the push block and other components, water pressure can be increased when the spray head is blocked by impurities, the impurities are sprayed out, the spraying effect of the spraying device is guaranteed, the spraying distance of the spray head is increased due to increase of the water pressure at ordinary times, and the spraying range and the spraying effect of the spraying device are improved.

This invention relates to a three-dimensional enclosed dust suppression system and control method for intelligent spraying on coal mining faces, belonging to the field of coal mine dust suppression control. It includes a coal mining machine, an onboard spraying system, and a tracking spraying system. The coal mining machine transports coal via a scraper conveyor. Rocker arms are located at both ends of the coal mining machine, with drums for coal mining mounted on the rocker arms. The onboard spraying system is positioned at the root of the rocker arms to enclose the drums at both ends of the coal mining machine. The tracking spraying system is mounted on the scraper conveyor and located beside the coal mining machine. The tracking spraying system is connected to a control system to activate the spraying devices near the front and rear drums of the coal mining machine in real time, guiding the dust-laden airflow generated by the coal mining machine towards the coal face. The onboard and tracking spraying systems create a three-dimensional enclosed space around the coal mining machine, preventing dust from spreading throughout the working area with the airflow, thus improving the overall dust suppression effect.

This disclosure provides a spraying device, relating to the field of stage technology. The spraying device includes: a pressure pipe and a plurality of nozzles; a gripping structure is provided on the pressure pipe, and the surface of the gripping structure protrudes from the surface of the pressure pipe along the radial direction of the pressure pipe; the plurality of nozzles are connected to the pressure pipe, and the gripping structure is located between two adjacent nozzles along the axial direction of the pressure pipe, thereby facilitating the user's gripping of the spraying device.

The utility model provides a faucet with a dual-mode switch, and belongs to the technical field of faucets. A dual-mode switch faucet comprises a valve pipe, a valve seat is fixed to the valve pipe, and valve assemblies are arranged in the valve seat and the valve pipe. The valve assembly comprises a first valve rod rotating in the valve seat, a first valve element is fixed to the bottom of the first valve rod, valve element sets are further installed in the first valve rod and the first valve element, and the flow of water flow is controlled through the two valve elements. The flow of water flow can be greatly reduced by opening the second valve element, the water pressure of the water flow is increased, the impact force of the water flow is increased, and the faucet can flush objects.

The utility model relates to the technical field of biological rotating disc sewage treatment, in particular to self-cleaning type biological rotating disc sewage treatment equipment which comprises a biochemical tank, a rotating disc device and a driving device, the biochemical tank is provided with a water inlet and a water outlet, the rotating disc device is arranged in the biochemical tank, and the rotating disc device comprises a rotating shaft and a plurality of discs arranged on the rotating shaft. The driving device is connected with the rotating shaft, the cleaning device comprises a supporting assembly and an elution assembly, the elution assembly is arranged corresponding to the interval space, the supporting assembly is used for driving the elution assembly to extend into the interval space, and the elution assembly comprises a first pressurizing baffle; therefore, the water flow in the interval space is pressurized and accelerated. The elution assembly is driven by the supporting assembly to extend into the interval space between the adjacent discs, so that the water flow in the interval space is pressurized and accelerated, the shearing force of the water flow on the biological membrane on the discs is improved, and the biological membrane is promoted to be separated from the discs.

The invention relates to the technical field of multifunctional power distribution cabinets, and discloses a novel intelligent power grid multifunctional power distribution cabinet which comprises a cabinet body, a water inlet pipe is arranged on the side, away from a water outlet pipe, of a circulating pipe, a water pump is fixedly installed on the back face of the cabinet body, and the input end of the water pump fixedly communicates with a loop pipe. A plurality of extrusion pipes are arranged in the mounting plate in a penetrating mode, rubber plugs are movably inserted into the output ends of the extrusion pipes, and a first electromagnetic valve fixedly communicates with the interior of the water outlet pipe. According to the novel intelligent power grid multifunctional power distribution cabinet, if a short circuit occurs in the cabinet body, if open fire occurs, a smoke sensor detects smoke dust, a data processor closes a first electromagnetic valve, the power of a water pump is increased, the water pressure in a circulating pipe is increased, and a rubber plug is extruded under the action of the water pressure; the rubber plug moves out of the extrusion pipe under the action of pressure, water is sprayed out through the extrusion pipe, open fire in the cabinet body can be extinguished, and the automatic fire extinguishing effect can be achieved.

The present invention discloses a novel pump head structure of a high-pressure cleaning pump, which relates to the field of mechanical pumps and solves the problem of pump head wear caused by excessive liquid pressure inside the high-pressure cleaning pump and uneven pressure on the pump body. The structure includes an infusion end structure, one side of the infusion end structure is connected to a high-pressure pump assembly, the high-pressure pump assembly includes a first motor, and the first motor is installed at the top of the heat dissipation assembly, the first motor drives the cleaning pump head through a crankshaft, the water inlet pressure assembly is installed at the input end of the high-pressure pump assembly, the water outlet pressure assembly is installed at the output end of the high-pressure pump assembly, and the water outlet pressure assembly includes a second detection pressure gauge; in the present invention, the pressure value of the liquid when passing through the pump head cover plate and the high-pressure pump head can be detected in time through the second detection pressure gauge and the first detection pressure gauge, and the pressure of the liquid when passing through the pump head cover plate can be controlled in time, and the installation of two sets of pressure regulating valves can help finely control the pressure.

The utility model relates to live pig slaughtering and shaving technical field, concretely is a kind of live pig slaughtering and shaving flushing mechanism, including cleaning tank, the inside fixed setting of cleaning tank has booster mechanism, the booster mechanism includes barrier, the inside fixed setting of cleaning tank has barrier, the inside movable setting of barrier has screw thread cover, the inside bottom end fixed setting of cleaning tank has electromagnetic push device, the top end fixed setting of electromagnetic push device has assembly block, the outside fixed setting of assembly block has rubber piston.The utility model by pouring clean water into cleaning tank, screw thread cover knob enters barrier, start electromagnetic push device, assembly block and rubber plug are pushed upwards, clean water will be sprayed from the water jet head on hot water pipe, can increase the internal water pressure, to clean the hair on the surface of pigskin after giving pig shaving, the increase of water pressure can wash the stubborn pig hair on the epidermis, improves the cleaning effect.

The present invention discloses an environmentally friendly dust reduction device for green building construction, which belongs to the technical field of construction dust reduction, and includes a water storage tank, both sides of which are connected to output boxes, and one side of the output box is provided with an adjustment support assembly. In the present invention, the movable plate drives the airbag to contract and relax periodically and cooperates with the air intake pipe and the delivery pipe to realize the one-way delivery of the airflow, and can deliver the hot airflow in the fixed box to the output box. On the one hand, after the hot airflow enters the output box, the pressure in the output box is increased, and then the water pressure in the output box is increased, thereby increasing the subsequent output pressure of the water flow, improving the subsequent spraying range of the water mist, reducing the negative impact of low pressure in winter, and improving the dust reduction efficiency. On the other hand, the hot air flow can preheat and heat the water flow in the output box to avoid condensation under the low temperature of the outside world in winter when the temperature of the sprayed water source is low, thereby improving the dust adsorption and dust reduction effect of the device in winter.

The invention relates to an expansion tube type filter, in particular to an expansion tube type filter solid-liquid separation mechanism which comprises a fixed support, a barrel, a water inlet and a water outlet, the water inlet and the water outlet are formed in the two sides of the barrel, the expansion tube type filter solid-liquid separation mechanism further comprises a transmission assembly, and the transmission assembly is installed in the barrel. The transmission assembly connects the moving rod with the power-assisted plate through the linkage rotating shaft, the power-assisted plate is connected with the expansion membrane through the clockwork spring, the expansion membrane is stretched to form wrinkles within the rupture strength range under the limitation of the clockwork spring, the contact area of water to be treated and the expansion membrane is increased through the wrinkle structure, and the compression spring can generate elastic force to drive the expansion membrane to rebound. The reciprocating motion of the moving rod drives the sliding block to move, meanwhile, the rack and the gear are meshed and matched to control the opening size of the drainage pipe, when the water flow speed is too high, the expansion membrane forms wrinkles to increase the contact area with the water flow, and the opening of the drainage pipe is enlarged for drainage, so that the filtering effect of the filter is improved.

The invention discloses an automatic dosing dredging device and method for a vacuum drainage system, relates to the technical field of dredging of vacuum drainage systems, and aims to solve the technical problem that a pipeline is easy to block due to large sewage flow and complex components of a hospital vacuum drainage system. The output end of the output pipe fixedly communicates with a cleaning pipeline through a flow dividing pipe, and the side surface of the cleaning pipeline is fixedly connected with a flow sensor and a pressure sensor. High-pressure spraying is conducted on the inner wall of the pipeline through the spray head, the anti-blocking and dredging capacity of the vacuum negative-pressure pipeline is remarkably improved, the manual intervention frequency is reduced, the operation cost is reduced, meanwhile, mechanical parts are additionally arranged on the device, automatic management is achieved, the reliability of the system and the user experience are improved, and the practicability is high. In addition, by optimizing the medicine proportion and the delivery mode, it is ensured that the medicine effect is maximized, the service life of the pipeline is prolonged, and the risk of secondary pollution is reduced.

The spray head comprises a water outlet part and a baffle, a flow channel is arranged in the water outlet part, a water inlet hole and a water outlet hole are formed in the flow channel, a necking opening is formed in the position, close to the water outlet hole, of the flow channel so as to improve the water outlet pressure, the baffle directly faces the water outlet hole, and the face, directly facing the water outlet hole, of the baffle is a convex face. Water columns sprayed out of the water outlet holes are sprayed to the convex face of the baffle to form divergent water flow, the spray head further comprises a connecting part, and through holes are formed in the connecting part. The sprayer is simple in structure, small in water flow energy loss and convenient to adjust in range when used in cooperation with a vertical rod.

The invention relates to the technical field of water curtain spraying auxiliary devices, in particular to a water curtain spraying supercharging device for a raw coal greenhouse, which is characterized in that the inner wall of a supercharging cylinder is coaxially and fixedly connected with a mounting ring, the mounting ring is fixedly connected with a rubber diaphragm, and the rubber diaphragm divides the supercharging cylinder into a water passing cavity and a pressure regulating cavity; a water supply assembly communicating with the inlet end of the water passing cavity is arranged above the pressurizing barrel, the outlet end of the water passing cavity fixedly communicates with the large-diameter end of a conical pipe, the small-diameter end of the conical pipe integrally communicates with the inlet end of a water drainage pipe, and a water pressure sensor electrically connected with the controller is installed on the water drainage pipe; a connector is integrally and coaxially arranged at the right end of the pressurizing cylinder, the right end of the connector fixedly communicates with the outlet end of a spring one-way valve, and the inlet end of the spring one-way valve fixedly communicates with a pressure adjusting assembly.