1546results about "Diaphragm valves" patented technology

The utility model discloses an automatic closing valve for gas pipeline leakage and a self-closing valve thereof, and relates to the technical field of structural design of gas self-closing valves. According to the gas pipeline leakage automatic shut-off valve, a vent hole is formed in the middle of a shell, a leather film is connected to the edge of one side of the shell in a sealed mode, a connecting structure is arranged on the edge of the shell, a gas inlet is formed between the connecting structure and the leather film, and the connecting structure is connected with the inner wall of a gas pipeline in a sealed mode. According to the self-closing valve, a timer is arranged on a valve body, a closing device is arranged at the gas inlet end of the valve body, and a gas pipeline leakage automatic closing valve is arranged at the gas outlet end of the valve body. The problem that in the prior art, automatic closing of the gas pipeline can not be achieved when leakage happens to the gas pipeline, and use safety of gas is affected is solved. According to the gas pipeline leakage automatic closing valve and the self-closing valve thereof, when gas leakage occurs, the gas pipeline leakage automatic closing valve can be automatically closed. And through the closing device of the self-closing valve, the action of the closing valve is further ensured, and the effectiveness of leakage closing is ensured.

The invention relates to the technical field of valves, and provides a water pump control valve with a downstream pipe burst emergency shutoff function, which comprises a main valve body with a water inlet port and a water outlet port, and further comprises a control cavity, and the control cavity comprises an upstream control cavity and a downstream control cavity; the water pump control valve further comprises a reset reversing valve and a turn-off reversing valve, the reset reversing valve comprises an upstream pressure collecting end, a first downstream pressure collecting end, a first reversing pressure collecting end and a drainage end, and the turn-off reversing valve comprises an upstream pressure output end, a second downstream pressure collecting end, a second reversing pressure collecting end and a downstream pressure output end. The reset reversing valve and the turn-off reversing valve selectively enable the control cavity to be in a dynamic adjusting state or a rapid turn-off state according to the pressure of the first reversing pressure collecting end and the pressure of the second reversing pressure collecting end respectively. By means of the technical scheme, the problem that in the prior art, a water pump control valve cannot meet the requirement for quick turn-off in emergency circumstances is solved.

Embodiments disclosed herein are directed to a drainage control system including, a tubular body with a tubular body lumen extending from a distal end to a proximal end and a collapsible tube disposed within the tubular body lumen, the collapsible tube including a collapsible tube lumen extending from a distal end to a proximal end of the collapsible tube. The collapsible tube can be attached to the tubular body, such that fluid flow through the tubular body lumen flows through the collapsible tube lumen. The tubular body can include a valve that is actuatable between a first configuration wherein fluid flow is allowed through the tubular body lumen and a second configuration wherein fluid flow is prevented through the tubular body lumen. An airflow source can be coupled to the valve such that pressure from the airflow source actuates the valve.

A fluid control valve includes a cover portion and a body portion. Inner surfaces of the cover and the body portion define a chamber that includes an inlet and an outlet in communication with the chamber. The cover portion includes a central section and an inversion inhibitor circumscribing the central section. The inversion inhibitor projects into the chamber toward a central axis of the chamber. The fluid control valve also includes a diaphragm disposed between the cover portion and the body portion. The diaphragm has a flexible member that is disposed within the chamber for controlling communication between the inlet and the outlet. The inversion inhibitor prevents the flexible member from reaching its natural-inverted position and creates a force within the flexible member that urges the flexible member to a seated position. In the partially inverted position, the upper surface of the flexible member conforms to at least a portion of the inner surface of the cover portion to define a passageway that permits communication between the inlet and the outlet.

A diaphragm valve assembly includes a bonnet portion and a body portion affixed together through a clamp structure providing pressure to a perimeter seal through angled inside surface of the clamp and matching angled surfaces of the bonnet and body portions. While the clamp provides load on the perimeter seal, a second level of sealing may be accomplished through an O-ring seal between the bonnet portion and the body portion. An adapter structure may be used to affix conventional bonnet and body portions through a clamp. The adapter structure may be implemented in various forms. A weir of the body portion and a bead of the bonnet portion may be aligned through fold-over or extended tabs of the diaphragm and cushion.

The invention relates to the technical field of fluid control, in particular to an air leakage valve and a fluid control device.The air leakage valve comprises a bearing plate and a valve element assembly, and the valve element assembly is provided with a flow guide plate, a middle plate, a valve plate and a bottom plate; one side of the supporting plate in the thickness direction is fixedly connected with one side, deviating from the middle plate, of the guide plate, and the valve plate is provided with a first deformation area and a second deformation area. According to the air leakage valve, the supporting plate and the guide plate, the middle plate, the valve plate and the bottom plate which form the modularized valve element assembly are all of a plate-shaped structure, so that the thinning degree of the air leakage valve is further improved; each layer of flat plate-shaped component can even be made of materials with the same or similar linear expansion coefficient, so that the problem of failure of the air leakage valve caused by poor temperature stability or temperature change is effectively solved; the flow path holes are arranged in a staggered and far-away manner, so that the sealing path is enlarged, the failure caused by poor sealing due to entry of foreign matters can be avoided, and the foreign matter interference resistance and the sealing reliability of the air leakage valve are greatly improved.

Disclosed is a corrosion-resistant diaphragm valve, including a valve cover, a thick film diaphragm sheet clamped and pressed jointly by the valve cover and a supporting block, and a valve seat above which the valve cover is coupled. A first lower opening of the valve cover is embedded with the supporting block to limit a movement space of a pneumatic piston member, and a second lower opening of the supporting block is embedded with a guided diaphragm pressing block, and the diaphragm pressing block is connected to one end of the pneumatic piston member. A straight sealing convex strip extending through a valve head is disposed at a bottom of the thick film diaphragm sheet. A curved runner C-shaped opening is formed in a curved runner structure which is bent upwards in a flattened curve; and the straight sealing convex strip is aligned with and pressed against an arc-shaped dam.

The utility model discloses an anti-loosening sealing diaphragm valve which comprises a valve body, a valve cover, an actuator, a valve cavity, a valve rod, a flow channel, a valve clack and a diaphragm. An inner shell is arranged in the valve cavity, an inner sliding block which is limited in the inner shell and slides in the horizontal direction is arranged in the inner shell, an embedded block is fixedly arranged at the left end of the inner sliding block, an embedded groove is formed in the right end of the valve rod, and when the flow channel is cut off by the valve clack, the embedded groove is just located on the left side of the embedded block. A driving spring for providing driving force for the embedded block to be embedded into the embedded groove is arranged in the inner shell; and an inclined guide contact surface is arranged on the embedded block. The utility model has the following advantages and effects: the inner sliding block can keep moving leftwards under the driving force of the driving spring, and then can push the embedded block to be embedded into the embedded groove of the valve rod, so as to lock the valve rod; longitudinal reciprocating offset of the valve rod is avoided, and the sealing performance of the valve clack is improved.

The invention relates to the technical field of pressure valves, and provides a high-back-pressure pneumatic valve for a semiconductor chemical system and an assembling method of the high-back-pressure pneumatic valve. The high-back-pressure pneumatic valve comprises an air cylinder assembly, a diaphragm and a valve seat. The cylinder assembly is provided with a cylinder upper cover and a cylinder body which are connected through a rotary lock catch structure, and the piston is assembled on the cylinder body. The diaphragm is provided with a sealing diaphragm part and a valve element integrally arranged in the center, the sealing diaphragm part is provided with a pressure-bearing protrusion and a sealing hook, and the pressure-bearing protrusion provides a back pressure counteracting area accounting for 25%-50% of the flexible area of the diaphragm. A valve port and a flow channel are formed in the valve seat, a mounting hole aligned with the valve port is formed in the valve seat, a sealing clamping groove is formed in the mounting hole, and the sealing clamping groove and the sealing hook are matched to form a sealing interface. The valve element table body is arranged at the valve port and driven by the air cylinder assembly to seal or break away from the valve port. According to the invention, high-back-pressure fluid impact can be effectively balanced, and the assembly efficiency and the maintenance convenience are greatly improved.

The invention discloses an improved valve body flow channel of a stop valve with a low lift loss coefficient xi and meeting ESG requirements. The valve body flow channel comprises a valve chamber, an annular groove, an inlet flow channel, a valve inlet, a valve seat, an outlet flow channel and a valve outlet. Wherein the center line of the inlet is provided with a bent arc smooth streamline, the angle of the rotating angle A is 2theta 1, and 2theta is larger than or equal to 55 degrees and smaller than or equal to 105 degrees; the bottom of the annular groove is provided with an inclined surface with an inclined angle beta; an outlet center line S2 of the outlet flow channel is a smooth streamline obliquely downwards, an inner outlet is formed in the inner diameter of the valve chamber, the angle of a corner E of an upper edge line S2a of the outlet flow channel is 2theta 21, 30 degrees < = 2theta 21 < = 90 degrees, a near end point E4 is communicated with the bottom of the inclined plane, and the height LH5 / d0 < = 0.4 of the near end point E4 is 0.4 < = LH5 / d0 < = 0.4; the jet flow S121 and the slow flow S122 can enter the outlet flow channel after passing through the diffusion C to form a rotation angle D, flow division is generated, and no flow interference is generated in the valve chamber and the inner outlet.

A valve assembly (300) is adapted to be coupled with a flexible pipe (200). The valve assembly (300) includes a hollow body (310) defining a first end (320) and a second end (330). A porous body (350) partially encloses the hollow body (310) proximate to the first end (320) and houses a swellable material (344). The hollow body (310) further defines a hollow chamber (340) between the first and second ends (320, 330). A piston (346) is disposed within the hollow chamber (340). The piston (346) is adapted to move between a first position (P1) and a second position (P2) corresponding to a contraction and an expansion of the swellable material (344). The valve assembly (300) selectively allows passage of water through the flexible pipe (200) based on the positions (P1. P2) of the piston (346). The irrigation system (100) is characterized in that the valve assembly (300) further includes an elastic diaphragm (380) disposed between the swellable material (344) and the piston (346). The elastic diaphragm (380) includes an annular bead (382).

A liquid supply bath device includes a main body including a flow passage having an inlet through which liquid flows in and an outlet through which the liquid flows out, an accommodation space in which the liquid is accommodated and of which an upper portion is opened to insert a discharge unit configured to discharge the liquid to a substrate, and a connection passage connected to the flow passage and the accommodation space. The liquid supply bath device further includes an opening / closing valve disposed on the main body and configured to open and close the connection passage.

A control valve capable of accurately and easily adjusting a degree of a communication opening or a volume of a flow channel with a simple configuration is provided. A control valve (flow-rate regulator valve 16) includes: a valve housing 20 including a flow channel block 21 with a flow channel in which a fluid flows; a valve assembly 50 mounted on the valve housing 20 to be movable in a first direction and provided with a valve body 31 configured to change the degree of the communication opening of the flow channel; and an operation shaft 51a including a shaft section 53 inserted into an insertion hole 52 formed in the valve housing 20 and a tapered shaft section 54 being in contact with the valve assembly, and a position of the valve body through the tapered shaft section is adjusted by motion of the operation shaft in a second direction.

A pneumatic valve comprises an actuator with a movable closing element being disposed in a housing; the closing element with a tappet penetrating an actuator opening between an air chamber formed in the housing and an actuator chamber, and a plate, with a sealing element, for closing the supply opening, thereon, on that end of said tappet protruding into the air chamber, and an elastic element pressing the plate toward the actuator opening in an activated state; the actuator element configured to move, in a non-energized state, the activating element to press the tappet against a supply opening, and in an energized state to move the activating element so as not to exert force on the tappet so that the plate is pressed in the direction of the actuator opening by the elastic element. A sealing collar disposed about the tappet seals the air chamber from the actuator chamber.

The invention provides a double-layer combined air bag material for foundation pit dewatering well plugging and an intelligent preparation process, and belongs to the technical field of air bag materials for foundation pit plugging. Comprising an outer-layer air bag, an inner-layer air bag, an inflation system and a control system, the outer-layer air bag and the inner-layer air bag form a honeycomb type distribution structure, the outer-layer air bag wraps the inner-layer air bag, and the contact face of the outer-layer air bag and the inner-layer air bag is of a curved surface attaching structure; the surface of the inner-layer air bag is coated with a waterproof sealing layer, the inflation system and the control system are arranged on one side of the outer-layer air bag, and the control system is electrically connected with the inflation system. By means of the double-layer combined air bag structure and the inflation control system, the problems that a traditional single-layer air bag is insufficient in pressure resistance, prone to deformation and leakage, poor in environmental adaptability and lack of real-time monitoring and adjusting in foundation pit dewatering well plugging are solved, and the stable, lasting and intelligent plugging effect still can be kept in the complex environment of the foundation pit dewatering well.

A device that may be a valve or a pinch valve is disclosed. The device includes at least the following components: (1) a flexible sleeve and (2) two end connection ports that are located on opposite ends of the flexible sleeve. The device may also include one or more of the following: an actuator, a body or housing, and a heating element. The flexible sleeve is capable of having the high-temperature material flowed therein and being in direct contact with the flexible sleeve. The high-temperature material is a material at a temperature above 200° C. For example, the high-temperature material may be a molten material in a casting process. A method of using the device is also disclosed. The method involves, at least, the following steps: (1) providing a flexible sleeve, and (2) flowing a high-temperature material into the flexible sleeve. The steps may be part of a casting process involving molten material, such as molten metal or molten metal alloy. The flexible sleeve may be provided as part of a device, such as a valve or pinch valve.

The invention discloses a double-acting pressure reduction diaphragm type pressure flow amplifier in the field of industrial flow control. The double-acting pressure reduction diaphragm type pressure flow amplifier comprises a machine body, a double-diaphragm assembly, a valve core and two air paths. Compressed air of the two air paths is from different sources, the cross sectional areas of the two air paths are adjusted by moving the valve core through the double-diaphragm assembly, the output proportion of the compressed air of the two paths can be adjusted, and therefore the purpose of changing the pressure intensity and the flow is achieved. The pressure is reduced by the following measures: two independent pressure reducing devices are arranged; and the output air is introduced into the double-diaphragm assembly, and a part of pressure intensity of the adjusted air is counteracted. The purpose of adjusting the pressure intensity and the flow of output air is achieved through linear reciprocating motion of the double-diaphragm assembly, various measures are adopted to reduce the pressure intensity of the adjusted air, and the application scene is wider.

The utility model discloses a diaphragm valve which comprises a valve body, a cover body, a diaphragm, a driving assembly and a pressing block. A non-return piece is integrally arranged on the valve main body and extends upwards on the outer side of the neck part; a limiting bulge is arranged on the skirt part; wherein the non-return piece and / or the limiting protrusion are / is provided with a guide face facilitating movement of the cover body in the locking direction, and when the cover body is combined with the valve body and locked, the diaphragm abuts against the valve body. The limiting protrusion is connected to the non-return piece in a clamped mode so as to limit the cover body to move in the unlocking direction. The non-return piece and the valve main body are integrally arranged, the situation that the non-return piece and the valve main body are not installed in place, and therefore free reverse rotation of the cover body cannot be blocked is avoided, the non-return piece is arranged to be of an upward extending structure, the non-return piece is made to deform more easily, and when the cover body is rotated to enable the cover body and the valve main body to be locked or unlocked, the non-return piece is not prone to deformation. The non-return piece can deform towards the space between the non-return piece and the valve body, and the problem that the whole valve body is replaced due to the fact that the non-return piece is broken is avoided.

The utility model relates to the technical field of electrically-driven pumps, in particular to a valve and a gas control device, which comprise a bottom plate with a bottom plate hole part, a cover plate with a gas outlet hole part, a valve plate with a valve plate hole part and a support plate with a gas release channel, the bottom plate, the support plate and the cover plate are sequentially stacked, a cavity is arranged in the center of the support plate, and the gas release channel is arranged in the cavity. A valve chamber is formed, the valve plate is arranged in the valve chamber, the air release channel is formed in the periphery of the supporting plate and communicated with the valve chamber, the bottom plate hole part, the cover plate air outlet hole part and the valve plate hole part are oppositely arranged, the bottom plate hole part is annular, and a valve plate hole part blocking plate opposite to the valve plate hole part is formed in the middle area of the bottom plate hole part. According to the valve and the gas control device, gas leakage is conducted through the lateral gap, the gas leakage area is greatly increased, the gas leakage speed is increased, the valve and the gas control device are more suitable for wrist type and arm type sphygmomanometers and massage instrument products so as to meet better user experience, meanwhile, the failure risk caused by blockage due to entering of impurities can be reduced, and therefore the reliability of the products is improved.

A flow rate control valve for reducing contamination of a controlled fluid with particles, to maintain cleanliness of the fluid, and performing high-speed control of a minute flow rate. The valve includes a valve block, diaphragm, and actuator, wherein by a minute pressure received on the diaphragm from the actuator, the fluid that has flowed in one flew-path in an upstream portion of the valve block is discharged via a space between an inside surface of the valve block and an inside surface of the diaphragm from another path in a downstream portion of the valve block. A peripheral portion of the diaphragm and an upper edge surface of the valve block are integrated with each other by welding such that an inner peripheral surface of the diaphragm and an inner peripheral surface of the valve block are flush without a level difference or a-gap therebetween in a welded portion.

A hemostasis valve capable of controlling a flow of fluid in a tube or catheter to and from a vasculature of a human patient or animal subject. An exemplary embodiment of the hemostasis valve includes a valve member having a lumen with a proximal end and a distal end for receiving flexible tubing or a catheter. The hemostasis valve includes one or more constricting wires that are tensioned by connections to valve member components. The hemostasis valve includes one or more force receiving contact surfaces connected to at least one of the one or more constricting wires configured to cause the contracting wires to constrict the flexible tube or catheter passing therethrough, when the one or more force receiving contact surfaces are in flow restricting state. The force receiving contact surfaces cause the constricting wires to release the flexible tube or catheter passing therethrough, when the one or more force receiving contact surfaces are in a not is a flow restricting state.

The present invention achieves a larger flow rate of a fluid control valve without increasing a size of an orifice or an actuator. The fluid control valve includes an orifice having a valve seat surface and a valve body having a seating surface to be seated on the valve seat surface. The orifice has a plurality of inflow ports and a plurality of outflow ports that are open along a first direction on the valve seat surface. The plurality of inflow ports and the plurality of outflow ports are arranged side by side in a second direction intersecting the first direction.

The invention belongs to the technical field of control valves, and particularly discloses a control valve and process for wash supplies production, the control valve comprises a flange pipe, a lower valve shell is fixedly arranged in the middle of the flange pipe, a partition block is fixedly arranged on the inner side, close to the middle, of the lower valve shell, and conveying ports are formed in the positions, close to the two sides of the partition block, in the lower valve shell; switching assemblies are arranged in the lower valve shell and on the lower side of the lower valve shell, four liquid inlet assemblies are arranged on the switching assemblies, each switching assembly comprises two annular grooves formed in the inner side of a partition block, a partition piece is arranged between the two annular grooves, and a semicircular opening is formed in the lower side of the partition piece. And communicating ports are formed in the lower sides of the two groups of annular grooves. Through overall cooperative use, the semicircular opening is opened to be communicated with the interior of the flange pipe, liquid materials of wash supplies can be conveyed from the interior, and shutdown for replacement of the diaphragm is avoided.

The invention relates to the technical field of pumps with electric drive, in particular to a valve and a fluid pump, the valve comprises a bottom plate with a bottom plate hole part, a cover plate with a cover plate hole part, a valve plate and a supporting plate with an air leakage channel, the bottom plate, the supporting plate and the cover plate are sequentially stacked, the middle of the supporting plate is hollowed out, and a valve chamber is formed between the bottom plate and the cover plate; the valve plate is arranged in the valve chamber, the thickness of the valve plate is smaller than that of the supporting plate, an air leakage gap is formed, the air leakage channel is communicated with the valve chamber and the air leakage gap and arranged on the periphery of the supporting plate, at least one unclosed parting line is arranged on the valve plate, and the valve plate can deform under the blowing action of air, so that an air port is formed in the area where the parting line is located. The bottom plate hole part, the cover plate hole part and the air port are oppositely arranged, a movable valve is formed in the area where the parting line is located, and the valve and the valve plate part are connected to form a connecting line. According to the valve, through the air inlet valve, the air outlet valve and the valve which are oppositely arranged, the miniaturization, lightening and thinning of a product are achieved, meanwhile, plugging and air leakage of a lateral gap are conducted, the air leakage speed is high, the risk of plugging failure is reduced, and the product reliability is improved.

The invention discloses a pneumatic assembly of a semiconductor flow control component and the semiconductor flow control component. The pneumatic assembly comprises a cylinder body, a hydraulic piston, a pneumatic piston and a valve rod. The cylinder body comprises an annular separator; the hydraulic piston is arranged in the cylinder body in a sliding mode and located on the side, away from the valve body, of the annular partition piece, and the hydraulic piston has the trend of moving towards the annular partition piece / the diaphragm. A pneumatic large-diameter part of the pneumatic piston is slidably arranged in the cylinder body and located on the side away from the hydraulic piston, and the end, away from the pneumatic large-diameter part, of a pneumatic small-diameter part of the pneumatic piston is slidably inserted into the annular partition piece. The valve rod sequentially penetrates through the annular partition piece, the pneumatic small-diameter part and the pneumatic large-diameter part and penetrates through the side wall of the cylinder body to stretch out to act on the diaphragm. The problem that in the prior art, multiple low-pressure pneumatic pistons need to act at the same time, so that the structure is complex is solved, and the pneumatic assembly of the semiconductor flow control component is simpler in structure and smaller in size.

Systems for processing articles are essential for semiconductor fabrication. These systems employ a variety of apparatuses for controlling flow. In one implementation, an apparatus for controlling flow may utilize a body having a flow path extending from an inlet to an outlet. A valve, a flow restrictor, and a pressure sensor are operably coupled to the flow path. The valve incorporates first and second actuators which enable control of mass flow rates of fluid flowing through the flow path.

The invention relates to the technical field of compressors. The invention provides an air suction valve plate, a valve group, a compressor, refrigeration equipment and a vehicle. The air suction valve plate comprises a body provided with a plurality of openings; each valve flap is arranged at the corresponding opening, each valve flap is provided with a fixed end and a free end, and the fixed ends are connected with the body; wherein the masses of at least two of the valve tongues are different, and / or the rigidities of at least two of the valve tongues are different. The structure of the air suction valve plate is reasonably arranged, so that the opening and closing frequencies of at least two of the valve flaps are different, in this way, it is guaranteed that in the air suction process of the compressor, an air suction silencer of the compressor and an air cylinder of the compressor are always kept in a communicating state, air suction pressure and pressure fluctuation in the air cylinder in the air suction process are reduced, air suction loss can be reduced, and the air suction efficiency is improved. And the efficiency of the compressor is improved.

A pinch valve includes a housing, first and second pinch bars, an actuator, a first front roller and a first rear roller. The actuator translates the first and second pinch bars relative to one another along a translation axis to pinch a flexible tube extending through an opening of the housing. The first front roller and the first rear roller are spaced from one another in the direction of a longitudinal axis. The first front roller extends transverse the opening and is positioned longitudinally upstream from the first and second pinch bars and the first rear roller extends transverse the opening and is positioned longitudinally downstream from the first and second pinch bars. The housing includes a first wall bordering the opening. A first plane lying tangent to the first front roller and the first rear roller is spaced inward from the first wall of the housing.

The invention discloses a quick-release and quick-change type rubber tube valve. Belongs to the technical field of filling equipment in special industries. The invention mainly solves the problems of complex rubber tube replacement and long replacement time due to the integral valve seat of the existing rubber tube valve. The device is mainly characterized by comprising a rubber tube, a valve seat, a rubber tube clamping opening and closing mechanism and a driving connecting mechanism, wherein the rubber tube is positioned in the rubber tube clamping opening and closing mechanism; the valve seat consists of a fixed valve seat, a movable valve seat and a valve seat movable connecting mechanism between the fixed valve seat and the movable valve seat; an opening and closing mechanism movable connecting mechanism is arranged on one side or two sides of the rubber tube clamping opening and closing mechanism; and the device driving motor is connected with the rubber tube valve through a crosshead shoe coupling. The flow control valve has the characteristics of convenience in disassembly and rapidness in rubber tube replacement, and is mainly used for maintenance and rubber tube replacement of the flow control valve in special industries.