865results about "Diaphragm valves" patented technology

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.

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 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.

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 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.

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 relates to the field of fluid control devices in semiconductor liquid paths, and provides a precise control on-off valve for a semiconductor liquid path and an assembling method thereof, and the precise control on-off valve comprises a valve seat, a cylinder assembly combined on the valve seat, a diaphragm valve plate accommodated in the valve seat, and an adjusting wheel arranged on an upper cover of the cylinder. The air cylinder assembly comprises an air cylinder upper cover and an air cylinder body which are connected through a rotary lock catch structure, and a piston assembly and a limiting rod set are assembled in the air cylinder assembly. And the diaphragm valve plate is driven by the cylinder assembly to seal or separate from the valve port of the valve seat. The adjusting wheel is connected with the limiting rod set and used for adjusting lifting of the limiting lead screw, and then the maximum upward moving position of the piston assembly and the opening degree of the valve are precisely limited. The valve breaks through the bottleneck that a traditional mechanical valve is prone to abrasion and leakage, achieves the effect of precise fine adjustment of flow, and meanwhile greatly improves the flow stability of long-term operation and the clean safety of an ultra-pure fluid system.

The invention relates to the field of diaphragm valve control mechanisms, in particular to a valve actuator and a using method thereof.The valve actuator comprises a valve body and a valve deck fixed to the top of the valve body and further comprises an actuator mechanism, and the actuator mechanism comprises a lower cylinder cover, a cylinder body and an upper cylinder cover which are vertically communicated in sequence; a piston rod penetrating out of the valve deck downwards is arranged in the middle of the upper cylinder cover in a penetrating mode, and the cylinder body is divided into an upper air chamber and a lower air chamber by a piston disc outside the piston rod. The rotatable sliding ring is arranged to be communicated with the upper air pipe connector and the lower air pipe connector, two-degree-of-freedom flexible adjustment of the circumferential position and the rotation direction of the air pipe connector is achieved, and the problem of installation adaptation caused by the fact that the position of an existing actuator air pipe connector is fixed is solved; the sliding ring is unlocked by squeezing the two sets of elastic pieces to be close to the supporting ring, the air pipe connector is driven to adjust the circumferential distribution position so as to adapt to different circumferential layouts of external air path connectors, and operation is convenient and fast.

A pulsation dampener includes: a centerbody assembly having: a chamber including a first opening bounded by a wall defining a first surface; an outlet port communicating with the chamber; an inlet port communicating with the chamber; a flexible first diaphragm, wherein a perimeter of the first diaphragm is bonded to the first surface forming a seal that blocks the passage of fluid; a first cap disposed adjacent the first diaphragm, defining a first cavity between the first cap and the first diaphragm; an inlet orifice formed in the first cap communicating with the first cavity; an exhaust orifice formed in the first cap communicating with the first cavity; and a valve seat disposed in the first cavity in fluid communication with the exhaust orifice. The first diaphragm is moveable between an open position spaced away from the valve seat, and a closed position sealed against the valve seat.

Disclosed is a valve apparatus having a first pressure compensation valve, a first, gas-tight, cap-like membrane device, and a gas-permeable, moisture-permeable, and yet water-impermeable second membrane device. The first pressure compensation valve, in particular a back-pressure valve, having a first valve housing, which limits a pressure compensation opening and comprising a housing side and a covering side, comprising or consisting of a first, gas-tight, cap-like membrane device covering a first pressure compensation opening and releasing the first pressure compensation opening from a predetermined negative pressure prevailing on the housing side in order to enable a pressure compensation between a housing device and an environment, and a gas-permeable, moisture-permeable, and yet water-impermeable second membrane device arranged on the covering side and in series to the first membrane device, covering a second pressure compensation opening and preventing water entry into the valve housing and thus into a housing device.

The invention relates to the technical field of diaphragm valves, and provides a grinding fluid diaphragm valve for semiconductor CMP equipment and an assembling method of the grinding fluid diaphragm valve. The diaphragm valve comprises a valve seat, a wear-resisting diaphragm piece and an adjusting assembly, an inclined annular step face of 3-10 degrees is arranged in the valve seat, the wear-resisting diaphragm piece is provided with a rubber body, a PTFE wear-resisting layer and an embedded threaded piece with a limiting part, and the adjusting assembly comprises an adjusting rod, a diaphragm connecting shaft pressing block, a hand wheel and a movable limiting adjusting nut. Static sealing of non-limit pre-pressing is achieved through slope contact, a runner dead zone is eliminated, and grinding liquid is prevented from crystallizing; the wear resistance is improved through the PTFE wear-resistant layer; the unique design of the limiting adjusting nut allows setting of a closing stroke or reserving of a closing gap, and flexible switching between a full-closing mode and a crystallization leakage prevention mode is achieved. The invention has the characteristics of high cleanliness, long service life and strong process adaptability, and is suitable for semiconductor precision fluid control.

A valve block body includes a monolithic main body formed by additive manufacturing and comprising a plurality of base portions with valve seats accessible via seat openings, a plurality of fastening portions, a plurality of process fluid connections, and a plurality of tubular walls defining internal fluid channels. A biomimetic structure connects the base portions, fastening portions, and tubular walls, and includes features such as variable density, hierarchical branching, and alignment along primary force paths to optimize strength and reduce material usage. The structure can include clamping force transmission portions and tubular support portions. Valve diaphragms can be provided to close the seat openings. The main body can further include a plate-shaped support contour and an outer housing. A fitting assembly includes the valve block body and a drive carrier with valve actuators and movable clamping elements for securing the valve block body during operation.

The invention relates to the technical field of emptying valves, and discloses a diaphragm type high-temperature-resistant emptying valve which comprises a valve seat, a plurality of valve bodies are fixedly connected to the bottom of the valve seat, a connecting plate is fixedly connected to the top of the valve seat, a diaphragm is fixedly connected to the interior of the connecting plate, a shell is fixedly connected to the top of the connecting plate, and a fixing ring is fixedly connected to the inner diameter of the shell. A sliding column is slidably connected to the inner diameter of the fixing ring, an extrusion part is fixedly connected to the bottom end of the sliding column, a first spring is fixedly connected between the extrusion part and the fixing ring, and a second spring is arranged in the first spring. In the normal state, the first spring and the second spring abut against the extrusion piece to be tightly attached to the valve seat, when the pressure rises, the first spring is compressed firstly, the extrusion piece moves upwards, the valve is opened, at the moment, the first spring provides small resistance, the valve can respond to small overpressure rapidly, and the compression amount of the first spring is increased along with continuous rising of the pressure.

A flow rate control valve includes a valve seat portion, a valve member, a driving portion, and a support member supporting the valve member via a diaphragm portion. The valve member has an opposite face opposite from a valve seat face with respect to a seat face and a circumferential face connecting together the seat face and the opposite face. The diaphragm portion is connected to the circumferential face of the valve member at a position closer to the seat face than to the opposite face. The support member has a first face on the same side as the opposite face with respect to a membrane face of the diaphragm portion and a second face closer to the valve seat portion than the first face. When the diaphragm portion is not deformed, the opposite face and the first face are on the same plane.

The utility model provides a kind of solenoid valve and dry separator, it is related to solenoid valve technical field.The utility model provides solenoid valve including valve body, electromagnet, armature, switch piece, and the air inlet and the gas outlet are opened in valve body, valve body has first inner cavity and second inner cavity, first inner cavity and air inlet are communicated, electromagnet is arranged in second inner cavity, second inner cavity is provided with rubber seal layer, and rubber seal layer covers at least part electromagnet;Switch piece is connected to armature, armature is configured to attract in electromagnet when electromagnet is powered, and restore original position under the action of air pressure when electromagnet is powered off, to drive switch piece to open or block gas outlet.The utility model provides a kind of solenoid valve and dry separator, can improve the safety of solenoid valve.

Mass flow control (MFC) devices capable of reporting inlet pressure and methods of reporting inlet pressure are provided. A mass flow controller (MFC) includes a chamber configured to receive a fluid, an upstream valve disposed upstream of the chamber, and a downstream control valve disposed downstream of the chamber. The MFC further includes a pressure sensor that detects fluid pressure in the chamber. The MFC further includes a controller configured to control actuation of the upstream valve. The controller is configured to toggle between two modes of reporting a measured inlet pressure. In a first mode, the controller reports a measured inlet pressure based on a reading from the pressure sensor and storing the reading to a buffer when the upstream valve is open. In a second mode, the controller reports the measured inlet pressure based on the reading stored to the buffer when the upstream valve is closed.

A flow control valve for an irrigation system includes a planar filter screen upstream of an inlet to a metering passage and a scraper device mounted to automatically clean the screen when water is flowing into the metering passage.

A clamping mechanism (30) for clamping a flexible tube. The clamping mechanism comprises two rotatable bobbins (22, 32). Each bobbin comprises a tube-engaging surface portion (24). The tube-engaging surface portions define boundaries of a free space between the bobbins through which a tube may extend. At least one tube-engaging surface portion has a shape that changes from a deepest portion to a shallowest portion around at least part of a circumference of the bobbin, such that axial rotation of the bobbins alters the free space available to accommodate a tube. At least one bobbin comprises a flattened portion (23) located above the deepest portion of the tube-engaging surface portion such that, when the flattened portion is aligned to face the other bobbin, the flattened portion provides a passage (25) through which the flexible tube may be inserted into the free space between the bobbins.

This method for producing a resin bonded body includes: forming a first resin assembly of a shape having an accommodation portion from a first fluororesin material that is capable of gelling and maintaining shape even at or above the melting point thereof; a step for accommodating a second resin assembly composed of a second fluororesin material that melts and becomes liquid at or above the melting point thereof within the accommodation portion. The method includes heating the first resin assembly having the second resin assembly disposed in the accommodation portion to or above the melting point of the first fluororesin material and the second fluororesin material before cooling the first resin assembly, changing the first resin assembly into a first resin molded body and the second resin assembly into a second resin molded body, and bonding the first and second resin molded bodies.

The utility model discloses a flexible cut-off device capable of adjusting cut-off height, which comprises a device shell, and an adjusting mechanism for adjusting the cut-off height is arranged on the outer surface of the device shell. The pressure sensor can detect the pressure in the high-pressure air bags, when the closure height needs to be adjusted, the electromagnetic valves on the two communicating pipes can be independently opened, the two high-pressure air bags at the lower end in the device shell are expanded, the pressure sensor detects the pressure, the pressure is sent to the single-chip microcomputer through the data line to be calculated, and the closure height is adjusted. And the expansion height of the high-pressure air bag is calculated, so that the closure height is adjusted.

This utility model discloses a solenoid valve with anti-clogging function, including a valve body with an inlet and an outlet at both ends. A flow control component and a first filter component are disposed inside the inlet of the valve body, adjacent to the flow control component. A sealing component is installed at the open end of the valve body. An electromagnetic control component is disposed adjacent to the sealing component on the outside of the valve body, with a first chamber between the electromagnetic control component and the sealing component. A second filter component is disposed between the flow control component and the sealing component, and is threadedly connected to the valve body. The pore size of the second filter component is smaller than that of the first filter component. This utility model achieves dual filtration through the first and second filter components, resulting in better filtration and preventing a large amount of impurities from entering the first chamber. Simultaneously, only small-particle impurities accumulate inside the valve body, avoiding frequent cleaning of the solenoid valve.

A fluid valve assembly for a seat comprising a fluid bladder, the fluid valve assembly comprising: a valve housing at least partially defining a first fluid inlet, a first fluid outlet, and a first exhaust outlet; a diaphragm disposed at least partially in the valve housing and configured to flex between a first position and a second position according to a first fluid pressure difference between the first fluid inlet and the first fluid outlet.

The invention relates to the technical field of diaphragm valves, and aims to solve the problems that a traditional diaphragm valve needs to be shut down when worn parts are replaced, disassembly is tedious, and sealing performance is insufficient. The diaphragm valve comprises a valve body, a valve middle cover, a valve top cover, a connecting assembly, a valve handle, a diaphragm piece, a valve screw rod, a torsion nut, a torsion limiting buckle and a locking ring, locking clamping teeth on the outer wall of the locking ring are matched with limiting clamping teeth on the side wall of an inner cavity of the valve top cover, the position of the valve is locked, and when the valve body is in a closed state, the diaphragm piece can be separated from the valve screw rod. Replacement of the valve handle and the torsion limiting buckle is completed, and replacement of abraded parts can be completed without shutdown; the connecting assembly is composed of a connecting insertion pipe, a limiting end cap, a pressing assembly, an elastic assembly and a compression spring, rapid disassembly and assembly can be achieved without tools, and the problem that a traditional long screw is tedious in disassembly is solved.

The application relates to the technical field of agricultural irrigation water treatment, and discloses a flow regulating valve which comprises a valve seat, a valve shell, a valve core and an elastic diaphragm, the valve seat is provided with a left-right through flow hole, a cylindrical valve core is sealingly connected to the left side of the valve seat corresponding to the position of the flow hole, a plurality of openings are arranged on the valve core wall in a circumferential direction, an elastic diaphragm is sealingly wrapped on the outer side of the valve core corresponding to the positions of the openings, a water passing inner cavity which is left-right through and sealingly communicated with the flow hole is formed between the elastic diaphragm and the valve core, the valve shell is sleeved on the outer side of the valve core and sealingly connected to the valve seat at the left end, and an adjusting outer cavity which is closed at the left end and opened at the right end is formed between the valve shell, the valve seat, the valve core and the elastic diaphragm. The application has a reasonable structure, the water passing section area of the water passing inner cavity can be adjusted according to the water head, so that the flow rate is relatively stable, the whole device is controlled by hydraulic self-driving, no manual cost or electric energy consumption is needed during operation, and the operation cost is low.

The invention is related to soft actuators controlled by fluid pressure. The actuators developed with the invention comprise two sacs which provide for the flexion of a structure upon pressurizing this structure that has an anisotropic flexibility, which is provided by different knitted layers. The knitted layers are produced as integrated with each other by means of the three-dimensional whole-garment knitting technique. The actuators according to the invention can be adapted according to the different requirements and produced with standard qualities.

Diaphragm valve housing, with at least two axially extending fluid channels (10, 12) which are aligned with and converge towards each other, a partition (38) between the fluid channels (10, 12) which has a free end towards a valve chamber (32) and with its free end forms a valve seat (26) which lies between adjacent openings (28, 30) of the fluid channels (10, 12), wherein the fluid channels (10, 12) each have a cylindrical axial section (34, 36) and a channel end section (40, 42) adjoining the axial section (36) and extending laterally and obliquely towards each other, towards the valve chamber (32) relative to the axial direction (A) of the axial sections (34, 36), which are separated by the partition (38), characterized in that the partition (38), viewed in axial longitudinal section, has a axial direction (A) flatter inclined section (44, 46) near the valve seat (26) and an adjoining,has a steeper section (48, 50, 82, 84), wherein the inclined section (44, 46) and the steeper section (48, 50, 82, 84) are formed in longitudinal section view by a straight section, wherein the inclined section (44, 46) transitions at its lateral ends, perpendicular to the axial direction (A) and viewed in plan view of the valve seat (26), into arcuate sections (52, 54), and wherein the arcuate sections (52, 54) transition into the steeper sections (48, 50) towards the axial section (34, 36).

A fitting assembly includes a fitting body and a valve assembly. The valve assembly includes a hollow pedestal, an actuator shaft, and a sealing member. The hollow pedestal includes upper and lower ends. The hollow pedestal is disposed in a valve opening defined by the fitting body such that the upper end is disposed in a passageway defined by the fitting body and the lower end is external to the passageway. The actuator shaft is disposed in the hollow pedestal and is movably coupled with the hollow pedestal. The sealing member is coupled with the actuator shaft adjacent the upper end and at least partially movable together with the actuator shaft. The sealing member is configured to selectively interface with an upper valve body to provide a seal therebetween. The fitting body and the hollow pedestal are formed of a multipiece construction and are joined together at the valve opening.

A film for a battery exterior body has a thickness of 10 µm or greater, including a heat-meltable tetrafluoroethylene-type polymer having 50 or more carbonyl group-containing groups per 106 carbon atoms in its main chain and a fluorine content of from 60% by mass to 75% by mass.