264 results about "Cylinder Valve" patented technology

The invention relates to the technical field of high-pressure gas cylinder control, and discloses a high-pressure gas cylinder valve pressure dynamic monitoring and self-adaptive adjusting method. The method comprises the following steps: dividing a high-pressure gas cylinder valve into a plurality of monitoring units, and obtaining pressure, temperature and flow data of each unit to form a comprehensive monitoring data set; establishing a pressure stability evaluation index and an environmental factor influence evaluation index based on the data set, and generating an initial risk value by applying a probability early warning mechanism and an adaptive prediction model; dynamically correcting the initial risk value and outputting a corrected risk value according to spatial relevance or time sequence dependency of adjacent monitoring units; and finally, the corrected risk values are sorted, a priority control instruction list is generated, and a control execution unit is combined to output a self-adaptive adjustment signal so as to adjust the opening degree of the valve. According to the method, comprehensive monitoring and dynamic adjustment of the high-pressure gas cylinder valve are achieved, and the operation stability of the valve is improved.

The invention discloses a grouting filling pump, and belongs to the technical field of grouting pumps, the grouting filling pump comprises at least four oil cylinder valve groups and pistons with moving strokes in the oil cylinder valve groups, and the pistons in the oil cylinder valve groups have a propelling state, a retreating state and a transition state between the propelling state and the retreating state; at any moment, at least two pistons are in a propelling state and a returning state respectively; the lifting valve is communicated with the oil cylinder valve groups, and the lifting valve controls opening and closing of a valve seat of the lifting valve through a valve clack. In the oil cylinder valve group, each piston is continuously switched in three stroke states, and at any moment, pistons distributed in different states, particularly pistons distributed in a propelling state and a returning state, exist in the whole oil cylinder valve group system, so that a slurry feeding action and a slurry discharging action exist in the whole pumping system at each moment; and the continuity of the slurry feeding and grouting process of the lifting valve can be ensured.

The present invention discloses a double-cylinder supercharging structure and a control method. The double-cylinder supercharging structure includes an accumulator, a first supercharging oil cylinder, a second supercharging oil cylinder, a shot sleeve oil cylinder, and an oil tank; the first supercharging oil cylinder and the second supercharging oil cylinder are respectively connected to the shot sleeve oil cylinder; the rodless chambers and the rod chambers of the first supercharging oil cylinder and the second supercharging oil cylinder are interconnected through hydraulic pipelines; the first supercharging oil cylinder and the second supercharging oil cylinder are synchronously controlled through a double-cylinder valve group. The technical solution of the present invention uses two smaller supercharging oil cylinders in parallel to replace a larger supercharging oil cylinder in the prior art, reducing the mass of the supercharging piston and the hydraulic shock during the supercharging action. The two small oil cylinders are synchronously controlled by two oil valves, with a larger flow rate and faster response. It can not only improve the shot sleeve performance and the yield rate of products, but also has a more flexible and compact layout.

The utility model relates to the technical field of mining area automatic fire extinguishing, and discloses an underground mining area automatic fire extinguishing device which comprises a control host, and the two sides of the host are divided into a first area and a second area; a flame sensor, an infrared thermal imager, a temperature sensor I, a smoke sensor and a temperature sensor II are arranged in each area, and all the sensors are connected with a control host; in addition, the control host is connected with a plurality of cylinder valve groups, the output ends of the cylinder valve groups are connected with a medicament pipeline, and a release switch is arranged on the pipeline. According to the device, fire signals are detected in all directions through the flame sensor and the infrared thermal imager, and sensitivity and accuracy are improved; through multi-parameter monitoring of a temperature sensor, a smoke sensor and the like, the fire early warning reliability is enhanced; and the fire extinguishing device is independently controlled, so that the fire extinguishing efficiency is improved. And the remote linkage function realizes remote monitoring and operation, so that the fire extinguishing timeliness and effectiveness are improved.

The high-pressure hydrogen storage cylinder sealing structure comprises a plastic inner container, a cylinder valve seat and a locking nut, the cylinder valve seat is located at a cylinder opening of the plastic inner container, the locking nut is in threaded connection with the cylinder valve seat, and extrusion sealing is formed among the locking nut, the plastic inner container and the cylinder valve seat. The sealing device is simple in structure and convenient to install, the multi-sealing effect can be achieved by tightening the locking nut, the air tightness of connection between the plastic inner container and the metal valve seat can be guaranteed, the failure probability is reduced, and the sealing reliability is improved; by arranging the structure with the rotation stopping function and adopting the structure that the plastic inner container wraps the shoulder of the cylinder valve seat, the combination effect of the plastic inner container and the cylinder valve seat is promoted, the connection strength and the overall stability of the structure can be improved, it is guaranteed that the plastic inner container and the cylinder valve seat cannot be separated under the long-term working state, and the service life of the cylinder valve seat is prolonged. Potential safety hazards caused by pressure rise after the hydrogen storage cylinder is inflated are avoided, and the service life and the safety of the hydrogen storage cylinder are effectively prolonged and improved.

The utility model provides a liquefied petroleum gas cylinder valve, which relates to the field of liquefied petroleum gas cylinder valves and comprises a valve body, an air flow channel is formed in the valve body, one end of the air flow channel is a cylinder valve air inlet and is connected with a steel cylinder, the other end of the air flow channel is a cylinder valve air outlet and is connected with a pressure reducing valve, and a valve core and an opening and closing valve are arranged in the valve body. The liquefied petroleum gas cylinder valve is characterized in that an overflowing self-closing assembly is arranged in a gas inlet of the cylinder valve, and when the gas outlet flow of liquefied petroleum gas in the steel cylinder exceeds a threshold value, the overflowing self-closing assembly cuts off a gas flow channel, according to the liquefied petroleum gas cylinder valve, a self-closing mechanism arranged in a gas outlet of a cylinder valve of a traditional valve body is abandoned, and the liquefied petroleum gas cylinder valve is limited by the structure of the self-closing mechanism; the sealing surface between the self-closing mechanism and the pressure reducing valve connector is small, the risk of liquefied petroleum gas leakage is increased, the safety device is arranged in the cylinder valve gas outlet, the sealing surface between the cylinder valve gas outlet and the pressure reducing valve connector is large, and sealing of the joint between the cylinder valve gas outlet and the pressure reducing valve is improved.

The utility model relates to the technical field of dismounting and mounting devices, in particular to a gas cylinder cap dismounting and mounting device which comprises a limiting structure, and an electric rotating structure is arranged on the limiting structure; the limiting structure covers the outside of the bottle cap and is arranged at the upper part of the gas bottle; the limiting structure is an annular cylinder with an opening in one end, and through holes are symmetrically formed in the center of the inner wall of the limiting structure; and two T-shaped bolts for controlling the bottle cap to rotate are arranged in an interlayer in the limiting structure. Therefore, the gas cylinder cap disassembling and assembling device can solve the problems that a common wrench or a screwdriver is used for being inserted into a round hole of a cylinder cap to increase torque by hand screwing and is difficult to use, a cylinder valve hand wheel is possibly rotated by mistake due to misoperation, and gas leakage and other dangers are caused.

The utility model relates to the technical field of filling devices, and particularly provides a plunger type filling valve and a filling device. The plunger type filling valve comprises a piston cylinder, a piston and a rotary valve. The piston cylinder is provided with a first end and a second end deviating from each other; the piston enters and exits the piston cylinder through the first end of the piston cylinder; the rotary valve is arranged at the second end of the piston cylinder and comprises a valve body, a rotary valve element and a first air cylinder. The valve body is provided with a valve element cavity, a first through hole, a second through hole and a third through hole which are all communicated with the valve element cavity are formed in the outer wall of the valve body, and the first through hole is connected with the piston cylinder. The rotary valve element is in a cone shape or a circular truncated cone shape and is rotatably installed in the valve element cavity, and the rotary valve element rotates in the valve element cavity so that the first through hole can be communicated with the second through hole or the third through hole. The first air cylinder is connected with the end, with the large diameter, of the rotary valve element in the axial direction and can drive the rotary valve element to move in the axial direction so that part of the rotary valve element can be separated from the valve element cavity, and the first through hole, the second through hole and the third through hole can be communicated.

The invention discloses a high-sealing ball valve with a leakage detection function, and relates to the technical field of valves, the high-sealing ball valve comprises a bottom shaft, a valve body structure, a filler box, a support, a filler gland, a valve cover and an air cylinder, the valve body structure adopts a leakage detection technology, when a leaked medium is captured, the leaked medium can be timely introduced into the detection structure, and the leakage detection function is achieved. Leaked media can be detected in the early stage of leakage, medium loss caused by further expansion of the leakage is prevented, meanwhile, an automatic leakage repairing technology is adopted, when the detection structure detects leakage, the injection structure injects sealing grease to the sealing face between the valve seat and the ball body in time, the sealing grease evenly fills a leakage channel under the pressure effect, and the leakage is avoided. And the continuous leakage of the medium is blocked, temporary filling is carried out, the injection structure is reset after filling is completed, it is ensured that the normal opening and closing functions of the ball valve are not affected, and the medium loss and environmental pollution risks caused by leakage are reduced.

The utility model relates to the technical field of filling devices, and particularly provides a plunger type filling valve and a filling device. The plunger type filling valve comprises a piston cylinder, a piston and a rotary valve. The piston cylinder is provided with a first end and a second end deviating from each other; the piston enters and exits the piston cylinder through the first end of the piston cylinder; the rotary valve is arranged at the second end of the piston cylinder and comprises a valve body, a rotary valve element and an air cylinder. The valve body is provided with a valve element cavity, a first through hole, a second through hole and a third through hole which are communicated with the valve element cavity are formed in the outer wall of the valve body, the first through hole is connected with the piston cylinder, the second through hole is connected with an external material cylinder, and the third through hole is connected with an external outlet; the rotary valve element is rotatably mounted in the valve element cavity, and the first through hole is communicated with the second through hole or the third through hole through rotation; the first air cylinder is connected with the end, with the large diameter, of the rotary valve element in the axial direction and can drive the rotary valve element to move in the axial direction so that the rotary valve element can be partially separated from the valve element cavity, and the first through hole, the second through hole and the third through hole can be communicated. The lifting device is in sliding connection with the piston.

The utility model discloses an induction cylinder valve which is characterized in that an integrated sensing mechanism which is of an integrated structure and is used for sensing and feeding back an air pressure value in the valve is arranged on a valve body. The pressure sensor is directly arranged in the center of the valve cavity through the transverse pipe structure of the valve body, and the integrated sensing mechanism is directly integrated on the valve body.

The utility model relates to the technical field of hydrogen storage equipment, in particular to a gas supply device, a bottleneck combination valve and a hydrogen storage bottle group. The air supply device comprises an air supply pipeline, a valve seat, an air supply one-way valve, an overflowing protection valve and a filtering mechanism. The valve seat, the air supply one-way valve, the overflowing protection valve and the filtering mechanism are all arranged in the air supply pipeline; the air supply one-way valve is used for making contact with the valve seat and sealing the air supply pipeline when bearing preset pressure difference larger than the first direction. The overflowing protection valve is used for making contact with the valve seat and sealing the air supply pipeline when bearing the preset pressure difference larger than the second direction. By arranging the gas supply one-way valve, in the hydrogen filling process, high-pressure hydrogen is prevented from passing through the high-pressure electromagnetic valve, and then the influence of temperature and flutter on the service life of the high-pressure electromagnetic valve in the filling process is avoided; when the downstream pipeline of the bottle opening combination valve is broken and the flow is increased abnormally, the gas supply pipeline is closed through the overflowing protection valve, and abnormal discharge is avoided.

The utility model provides a cylinder valve with a low-pressure alarm function, which comprises a valve body, an air inlet channel and an air outlet channel are longitudinally arranged in the valve body, a right valve cavity, a left valve cavity and a ventilation flow channel are transversely arranged in the valve body, the ventilation flow channel is used for communicating the right valve cavity with the left valve cavity, one end of the air inlet channel is communicated with the right valve cavity, and one end of the air outlet channel is communicated with the left valve cavity. The air inlet control component comprises a first valve head and a first valve head control assembly, the first valve head is arranged in the right valve cavity, the first valve head control assembly is used for driving the first valve head to move left and right in the right valve cavity, the air outlet control component comprises a second valve head and a second valve head control assembly, and the second valve head is arranged in the left valve cavity. The second valve head control assembly is used for controlling the second valve head to move left and right in the left valve cavity. The diver does not need to pay attention to the residual gas pressure all the time and does not need to check the handheld pressure gauge all the time, and therefore convenience and safety are guaranteed when the diver dives.

The present invention relates to the technical field of valves, and specifically to a liquefied petroleum gas cylinder valve with electromagnetic cut-off, which includes a valve body. On one side of the valve body, there is an air outlet port. An electromagnetic valve sleeve is fixedly sleeved outside the air outlet port. A valve core is movably arranged inside the air outlet port. A first guide through hole is penetrated through the valve core. The inner side of the valve core is connected to the inner end of the air outlet port through a closing spring. In the natural state, the closing spring is in a compressed state. The outer end face of the air outlet port is provided with an annular extension ring. A through hole is penetrated through the extension ring, and a steel ball is movably embedded in the through hole to prevent the valve core from sliding outwards. Through the electromagnetic attraction mechanism, the present invention can automatically close the air outlet port of the cylinder valve, thereby effectively avoiding the continuous leakage of liquefied petroleum gas, and thus greatly improving the safety performance of the cylinder valve.

The present invention relates to a controller of a vehicle-mounted hydrogen system, comprising a power supply circuit, a PWM drive circuit and a CAN communication circuit respectively connected to a processor; the PWM drive circuit is used to connect a PWM drive control type bottle mouth valve, and the bottom side or high side drive circuit connected to the CAN communication circuit is used to connect to the switch type bottle mouth valve. The controller is compatible with gas cylinder valves with different operating pressures in a 35MPa vehicle-mounted hydrogen storage / supply system and a 70MPa vehicle-mounted hydrogen storage / supply system, and meets the control signal transmission of a 35MPa switch type bottle valve and a 70MPa PWM type bottle valve.

The pressure reducing valve comprises a valve body, the valve body is provided with a gas cylinder mounting port and a gas outlet port, the valve body is provided with a pressure reducing mechanism, the pressure reducing mechanism comprises a valve element assembly, the valve element assembly is arranged in the valve body, the valve body is provided with a gas inlet assembly, the gas inlet assembly comprises a floating piston, and the valve body is provided with a piston cavity. A part of the floating piston is movably arranged in the piston cavity, the floating piston divides the piston cavity into a first cavity and a second cavity, the valve element assembly is located between the first cavity and the air outlet port, and the second cavity communicates with the exterior of the valve body; the valve body is provided with a through hole, the through hole is located between the piston cavity and the gas cylinder installation opening, and part of the floating piston movably penetrates through the through hole. The floating piston is provided with an air inlet channel, and the air inlet channel communicates with the first cavity and the air bottle mounting opening. When the first cavity is provided with compressed gas, the floating piston can be pushed to move in the direction close to the gas cylinder installation opening, the floating piston further ejects a valve element of the cylinder valve open, and labor is saved.

The utility model provides a pressure regulation control system for a riser of a coke oven. The pressure regulation control system comprises a PLC (Programmable Logic Controller) system, a remote monitoring system, a remote IO (Input / Output) system and a riser opening and closing regulation system, the PLC system is used for controlling the opening degree of a turning plate of the whole turning plate pressure regulating control system and changing the area of a channel of the raw gas guided into the gas collecting pipe; the remote monitoring system is installed in a central control room; the remote IO system is used for collecting and transmitting information of the turning plate air cylinder on site and transmitting an executed control instruction; and the ascending pipe opening and closing adjusting system is used for receiving information of the PLC system to open and close a flap valve of an ascending pipe bridge pipe. According to the system, a cylinder, a valve positioner and other components are arranged on a mechanical water seal flap valve, a PLC system is used for controlling the opening degree of a flap, the area of raw gas guided into a gas collecting pipe channel is changed, and the purpose of adjusting the bottom pressure of a carbonization chamber is achieved by adjusting the guided-out amount of the raw gas.

The utility model provides a gas cylinder release assembly, a cylinder valve and a gas cylinder. The gas cylinder release assembly comprises an elastic piece, a plugging piece and a temperature sensing element which are arranged in a mounting cavity on the cylinder valve, the plugging piece is arranged in the mounting cavity in a sliding mode, the elastic piece and the temperature sensing element are arranged on the two opposite sides of the plugging piece respectively, the temperature sensing element is arranged close to an opening of the mounting cavity, when the temperature is lower than a preset temperature threshold value, the plugging piece is limited by the temperature sensing element, the elastic piece is compressed to store energy, and the plugging piece cuts off the discharging channel; when the temperature sensing element is melted or broken, the blocking piece is unlimited, the elastic piece releases energy to push the blocking piece to slide, and the discharge channel is conducted; the discharge channel comprises an air inlet part and an air outlet part which are communicated through the mounting cavity, and the sliding direction of the plugging piece is orthogonal to the air inlet direction of the air inlet part. According to the gas cylinder release assembly, the blocking piece can balance the gas pressure borne by the blocking piece, the gas pressure cannot be conducted to the temperature sensing element, and opening of the release assembly is more controllable.

The utility model discloses a knife gate valve which comprises a valve body, a gate plate and an air cylinder for driving the gate plate to translate in the valve body. The valve body comprises a supporting plate and a cover plate, the supporting plate is detachably connected with the cover plate, the supporting plate and the cover plate are both provided with material channels which correspond to each other, and the two ends of the two material channels protrude out of the inner side face and the outer side face of the supporting plate and the cover plate body respectively; the flashboard is located in a cavity formed by the supporting plate and the cover plate, through holes corresponding to the material channels are formed in the flashboard, self-lubricating sealing plates and elastic plates are sequentially arranged on the two sides of the two adjacent material channels of the flashboard, and the peripheries of ports, located at the ends in the cavity, of the adjacent material channels are sleeved with the self-lubricating sealing plates and the elastic plates. The self-lubricating sealing plate is tightly attached to the adjacent face of the gate plate under the elastic action of the elastic plate. The piston end of the supporting plate of the air cylinder extends into the cavity and is connected with the flashboard through a quick-release assembly. The utility model can be self-cleaned, and can avoid the problem that the materials are easy to deteriorate after being stacked for a long time.

The invention relates to a steel cylinder valve nitrogen sealing device which comprises a steel cylinder valve on a steel cylinder body and a steel cylinder valve connector connected with the steel cylinder valve, a vacuumizing device or a valve cover is connected in front of the steel cylinder valve connector, one end of the steel cylinder valve connector is connected with a steel cylinder, and the other end of the steel cylinder valve connector is connected to the vacuumizing device through an adapter or directly connected with the valve cover. A non-return device is arranged in the steel cylinder connector, a starting device is installed in the valve deck or the adapter, and the non-return device is driven by the starting device to be opened and closed. The device is low in overall cost, small in size and convenient to operate, and the problem of corrosion of the steel cylinder valve and the steel cylinder connector can be well solved, that is, air is isolated in a nitrogen sealing mode, the possibility of contact with residual corrosive media is reduced, and the effect of reducing corrosion is achieved.

The utility model provides a hydrogen storage cylinder valve mounting device, belongs to the technical field of gas cylinder mounting, and solves the problem that a cylinder valve is easily damaged by screwing in the prior art. The device comprises a support and a transfer roller rotationally arranged on the support, a mounting frame is arranged on the outer side of the support, a mounting plate is arranged on the mounting frame, a first telescopic device is arranged on the mounting plate in the axial direction of a gas cylinder, the telescopic end of the first telescopic device is connected with a motor, an output shaft of the motor is connected with a torque sensor, and the torque sensor is connected with a valve mounting head. The valve mounting head comprises a shell, a mounting groove is formed in the shell, and a protection lining is clamped in the mounting groove. The first telescopic device drives the valve installing head to move forwards and get close to the gas cylinder, then the motor drives the valve installing head to rotate so as to tighten the cylinder valve on the gas cylinder, the torque sensor can monitor the torque, and it is guaranteed that the cylinder valve is installed in place. The protection lining is arranged in the valve installing head and makes contact with the cylinder valve, so that the cylinder valve is prevented from being damaged in the rotating process, and the production efficiency is guaranteed.

The utility model relates to a screwing tool for a cylinder valve of a gas cylinder, which aims at solving the technical problem that a valve core of the gas cylinder is not easy to screw after being used for a long time, and adopts the technical scheme that an isosceles trapezoid clamping hole is formed in the upper part of a rectangular screwing plate, the clamping hole is narrow at the upper part and wide at the lower part, and the length of the upper bottom is smaller than the diameter of the valve core; the length of the lower bottom is larger than the diameter of the valve element, the included angle alpha between the waist and the lower bottom is larger than or equal to 75 degrees and smaller than 90 degrees, withdrawing blocks are fixedly arranged on the edges of one side or the two sides or the middle of the side wall of the screwing plate, a cushion block is fixedly arranged at the top end, and the width of the cushion block is larger than the thickness of the screwing plate. The valve element can be completely clamped through the trapezoid clamping hole, the valve element is loosened according to the lever principle, the length of the screwing plate can be adjusted according to needs, operation is easy, and operation efficiency is greatly improved.

An integrated high-efficiency hydrostatic test device for a motor shell comprises a rack, an operation table and a test bed, the operation table and the test bed are arranged on the rack to form a whole, a water tank is arranged in the lower space of the operation table, a motor pump set is arranged in the lower space of the operation table, and a permanent magnet direct drive motor is adopted as a motor; the test bench comprises a workpiece placing device, a pressing and clamping device and a communicating device. The operation table and the test table comprise enclosure structures; the workpiece placing device comprises a base and T-shaped bolts, and the base is provided with a plurality of T-shaped grooves; the pressing and clamping device comprises a pressing support, a pressing oil cylinder, a pressing block, a pressing flange, a clamping oil cylinder and a clamping support which are arranged in a cross shape and press and clamp the two sides and the two ends of the motor shell respectively. The communicating device comprises an oil cylinder valve block, a pipe connecting seat, a stop valve, a quick connector, a connecting hose, a water filling and pressing connector and a water discharging opening. The pressing test process is safe and reliable, the motor shell is more convenient to install, the error rate of connecting pipelines is reduced, and the working efficiency is effectively improved.

The utility model relates to the technical field of liquid chlorine treatment, in particular to a liquid chlorine steel cylinder treatment device and a using method. The device comprises a liquid chlorine steel cylinder, a gravity sensing base for sensing the weight of the liquid chlorine steel cylinder, and an evacuating and replacing unit which is communicated with the liquid chlorine steel cylinder and is used for removing residual chlorine in the liquid chlorine steel cylinder, the neutralizing unit is communicated with the liquid chlorine steel cylinder and is used for neutralizing residual chlorine; the purging and drying unit and the air tightness checking unit are sequentially arranged at the downstream of the evacuating and replacing unit; the liquid chlorine steel cylinder is provided with a gas-phase cylinder valve and a gas-phase distribution pipe which are communicated with the evacuation and replacement unit, and a liquid-phase cylinder valve and a liquid-phase distribution pipe which are communicated with the neutralization unit. The liquid chlorine steel cylinder treatment device has the effect of solving the problems that existing liquid chlorine steel cylinder treatment is tedious in operation and low in efficiency, and potential safety hazards exist.

The utility model relates to a cylinder valve assembly welding roundness adjusting support. The cylinder valve assembly welding roundness adjusting support comprises a supporting base, a main beam, a supporting plate and a high-strength tip cone bolt. A rotary clamping groove is formed in the supporting base, the middle of the main beam is rotationally installed on the rotary clamping groove, supporting plates are symmetrically installed at the two ends of the main beam, threaded holes are formed in the supporting plates, high-strength tip cone bolts are installed through the threaded holes in a threaded mode, and the length of the main beam is designed according to the diameter of the cylinder valve. The tip cone bolt on the supporting plate is jacked outwards according to the required rotating length to adjust the roundness, and after the roundness meets the requirement, the tip cone bolt is loosened for roundness remeasurement after the roundness is fixed and kept for a period of time until the roundness meets the requirement in a free state; and the tip cone bolt slightly abuts against the inner wall of the cylinder valve for welding, operation is convenient, and the process is easy to control.

In an embodiment, a user operated pneumatic sterile liquid compounding device enables a user to easily and rapidly perform a sterile liquid compounding operation. The frame of the device is configured to receive a syringe with a needle inserted into a sterile vial. A pneumatic cylinder including a pusher rod connected to a pusher plate engages the top of the syringe plunger. Initially a user-operated lever is in an “UP” position. When the lever is moved to a “DOWN” position, the device engages the pusher plate to move the plunger down to inject the liquid in the syringe into the sterile container. The compounding device is powered by pressured gas from a cartridge via an adjustable pressure regulator, a pressure release valve, and a pneumatic cylinder valve connected to the pneumatic cylinder to allow pressured gas applied to the pneumatic cylinder to raise and lower the rod.

The low-residue three-way plunger valve comprises a three-way plunger valve body, the three-way plunger valve body comprises an air cylinder, a valve body and a valve rod, the three-way plunger valve body is integrally divided into an upper layer structure and a lower layer structure, the upper layer structure and the lower layer structure of the three-way plunger valve body are separated by the valve rod, and the air cylinder is installed at the top of the valve rod. The bottom end of the valve rod is connected to the top end of the valve body, and the top of the air cylinder is in threaded connection with a valve rod sensing device. According to the low-residue three-way plunger valve, after product transportation is completed, the interior of the valve cavity can be cleaned, and the residual quantity of products in the valve is reduced. Therefore, the recovery rate is improved, pollution caused when the next batch of products are transported is avoided, and the device is suitable for industries with high product recovery rate, such as paint. The special structure of the valve rod can ensure that the drift diameter of the valve is the same as the inner diameter of a transportation pipeline, and a pipe cleaner can smoothly pass through the valve so as to improve the recovery rate of a whole pipe cleaning system.

The utility model discloses a dust-removing magnetic anti-rotation needle type sucker set which comprises an air cylinder cavity, a needle row movable cavity and an air cylinder upper valve element rod, the air cylinder upper valve element rod is provided with the air cylinder cavity and the needle row movable cavity, an air cylinder upper valve element and an air cylinder lower valve element are arranged on the air cylinder upper valve element rod, and the air cylinder upper valve element is provided with a convex straight-line-shaped groove. A concave linear groove connected with the convex linear groove is formed in the air cylinder cavity, so that the air cylinder upper valve element rod cannot rotate during jacking movement, the needle row seat is effectively prevented from slipping, and the needle row seat is convenient to disassemble; a distance adjusting nut is arranged on the outer side of the lower part of the air cylinder lower valve element; a dust removal air inlet hole is formed in one side surface of the air cylinder cavity; and the faller gill moving cavity is internally provided with a faller gill which punctures in a crossed manner, so that a product is grabbed. According to the dust-removal magnetic anti-rotation needle type suction cup set, an air cylinder valve element anti-rotation structure and a dust removal structure are improved, and needle outlet length magnetic induction control is adjusted, so that easy maintenance and accurate grabbing control are achieved, the production efficiency is effectively improved, the maintenance cost is reduced, and installation diversity is achieved.

The utility model provides a multifunctional papermaking pulp pressurized screen which comprises a machine box, a discharging valve is connected to an opening in the lower portion of the machine box through a flange, a feeding valve is connected to a feeding port in the upper portion of the machine box through a flange, an inner box body is arranged in the machine box, and connecting columns are fixedly installed on the two sides between the inner box body and the machine box. And a barrel-shaped filter screen is fixedly mounted in the middle of the lower side in the inner box body. Due to the arrangement of the piston body, the air cylinder, the valve, the annular piece and the connecting rod, pressure can be applied to slurry, and therefore the sieving efficiency of the slurry is improved.

The invention discloses a cylinder valve abnormal closing fault judgment method and device, equipment and a storage medium. In the method, after a valve opening instruction is triggered, the first hydrogen initial amount is obtained according to the first temperature of each cylinder valve at the first moment and the first pressure value of gas in a high-pressure pipeline; according to the second temperature of each cylinder valve at the second moment and the second pressure value of the gas in the high-pressure pipeline, the first hydrogen remaining amount is obtained; obtaining first hydrogen consumption according to the current value output by the fuel cell system from the first moment to the second moment; obtaining a first hydrogen mass difference according to the first hydrogen initial amount, the first hydrogen residual amount and the first hydrogen consumption amount; judging whether the first hydrogen mass difference is greater than a first preset value or not; if the first hydrogen mass difference is larger than a first preset value, it is determined that the abnormal closing fault of the cylinder valve exists, and under the condition that cost is not increased, the abnormal closing fault of the cylinder valve is recognized.