499results about "Engine diaphragms" patented technology

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 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.

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 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.

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 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.

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.

The present invention discloses a valve assembly for controlling the flow of fluid in a channel (135) extending along a longitudinal central distal axis. The valve assembly (150) includes a switch (152), a deformable tube (170) surrounding the channel (135), and a sphere (160) disposed within the tube (170) between a distal channel portion (133) and a proximal channel portion (137) of the channel (135). When the tube (170) is in an undeformed, resting state, the valve assembly (150) is in a closed state and the sphere (160) is in direct contact with the tube (170) forming a fluid seal therewith, and when a force is applied to the switch (152), the tube (170) is in a deformed, non-resting state and the valve assembly (150) is in an open state, thereby allowing fluid to pass from the sphere (160). The present invention further relates to a biopsy syringe including the valve assembly (150).

This disclosure provides adjustable flow-control devices and systems for modulating the passage of matter. In a first apparatus, a central shaft with a flexible flow tube includes wall apertures that communicate with a lumen. A cone piece, threaded to the central shaft and having a non-threaded conical section, defines an annular gap that houses flow-modifying elements, positioned radially outward of the apertures. Rotation of the cone piece advances or retracts the conical section to cam the elements between open and closed conditions, selectively occluding apertures and varying effective flow area; a nozzle outlet and elastomeric, resilient liners are supported. A system embodiment connects first and second such apparatuses in series, directly or via tubing. A second outlet assembly employs thin, flexible vanes arranged around a pipe and a buckling collar that deflects inward under axial actuation to vary vane angle and thus the orifice size and / or shape.

The invention discloses an electrically-driven composite valve with a back-suction effect in the field of wafer cleaning, which comprises a valve seat, a first valve and a second valve, the valve seat is provided with a through flow channel, the first valve is located at the upstream of the flow channel and used for on-off control, the second valve is located at the downstream of the flow channel, and a cylindrical back-suction chamber is arranged at the flow channel position and used for back-suction control. The core of the second valve is a piston type valve element, and the second valve is driven by a driver to axially move in the cavity. According to the valve, traditional pneumatic drive is replaced with electric drive, after the first valve is closed, the driver drives the piston type valve element to move by the preset stroke in the axial direction, the effective volume of a cavity is increased, negative pressure is formed in a flow channel, liquid medicine is sucked back, and back suction control of the preset stroke is achieved through axial movement of the piston type valve element; stable execution of the resorption action is ensured, and the problem of pollution caused by dripping of liquid medicine is effectively solved.

A method of activating additional features within an electronic fluid control device with a first level capability is disclosed. A first level capability has at least one additional feature of the electronic fluid control device disabled. A first request is transmitted from the electronic mobile device to a distant server for a second level capability that enables the additional feature. The server evaluates whether the first request can be granted based upon a server level qualification. A first request response is automatically sent from the distant server to the electronic mobile device either granting or denying the first request. If granted, the first request response includes an activation code enabling the second level capability. A user then manually presses a wake button on the device and the activation code is automatically sent from the electronic mobile device to the electronic fluid control device enabling the additional feature.

The utility model belongs to the technical field of wastewater treatment, and particularly relates to a wastewater sampling device which comprises a box body, a wastewater input pipe, a detection output pipe, a wastewater output pipe and a flow guide pipe connected with the wastewater input pipe, and further comprises a gravity driving assembly used for driving the flow guide pipe to switch positions under the action of gravity, the switching assembly is connected with the gravity driving assembly and is used for controlling the flow guide pipe to move, so that the flow guide pipe is respectively aligned with the detection output pipe and the wastewater output pipe; the magnetic sealing assembly is arranged at the end part of the flow guide pipe and inlets of the detection output pipe and the wastewater output pipe, and realizes sealed connection through magnetic attraction force; the liquid discharging assembly is arranged at the bottom of the box body and used for discharging waste water in the box body, the position switching of the flow guide pipe without external energy can be realized, and the energy consumption is reduced; the magnetic sealing assembly ensures the sealing performance when the flow guide pipe is connected with the output pipe through the magnetic attraction force of a permanent magnet ring and a ferromagnetic sealing groove.

A metering valve (4) is shown and described as a substantially dead-space-free and self-closing shut-off device for preferably at least substantially residue-free metering of a reactive and / or property-modifying component (21) and / or a reactive component mixture in a two- or multi-component mixing process, with a metering tube (6) and with an elastic, tubular closure element (7) applied to the metering tube (6), wherein the closure element (7) in a closed or rest state of the metering valve (4) closes at least one outlet opening (8) of the metering tube (6) against the outlet of a liquid flow present in the metering tube (6) and is reversibly expandable in a metering operation of the metering valve (4) under a metering pressure of the liquid flow in order to allow the outflow of the liquid flow via the outlet opening (8).

The present application provides a liquid processing apparatus, a liquid supply mechanism, a liquid processing method, and a computer storage medium. A liquid processing apparatus that supplies a processing liquid to a substrate to perform liquid processing on the substrate includes a substrate holding section that holds the substrate; a discharge nozzle that discharges the processing liquid to the substrate held by the substrate holding section; a processing liquid supply source that supplies the processing liquid; a processing liquid supply tube that is connected to the processing liquid supply source and has a supply passage through which the processing liquid to be supplied to the discharge nozzle flows; a regulating valve that is provided in the processing liquid supply tube and performs an opening and closing operation of the supply passage; and a control section that controls the regulating valve, the regulating valve having a diaphragm and a valve body, controlling the supply of air to the diaphragm, and causing the valve body to operate via the diaphragm to perform an opening and closing operation of the supply passage between an open state and a fully closed state.

The utility model relates to the technical field of electrically driven pumps, in particular to a valve and a fluid pump, which comprise a bottom plate with a bottom plate hole part, a cover plate with a cover plate hole part, a valve plate and a support plate with an air leakage channel, the bottom plate, the support plate and the cover plate are sequentially stacked, the middle of the support plate is hollowed out, so that a valve chamber is formed between the bottom plate and the cover plate, and the valve plate is arranged in the valve chamber. 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.

Provided is an isolation valve including: a valve disc; a body having a valve chamber, an inflow-side flow channel, and an outflow-side flow channel that are integrally formed of a resin material; and a temperature detecting portion configured to determine a temperature of a fluid flowing through the body, and the inflow-side flow channel has a first flow channel part extending along a first axis and a second flow channel part extending along a second axis that intersects the first axis, the first flow channel part and the second flow channel part are coupled to each other in a coupling region, a protruding part protruding along the first axis from an inner circumferential face of the coupling region is formed in the body, and an accommodation hole accommodating the temperature detecting portion is formed inside the protruding part.

Provided is an isolation valve including: a valve unit movable along an axis; a body inside which a valve hole and a valve chamber allowing a fluid to flow therethrough are formed; a diaphragm unit having a thin film part formed annularly about the axis to isolate the valve chamber from an adjacent space and a base part connected on the outer circumferential side of the thin film part; a static charge eliminating unit arranged interposed between the body and the base part in a direction along the axis; and an electrical conduction part contacted with the static charge eliminating unit and maintained at a ground potential, and the static charge eliminating unit has an exposed part formed of an electroconductive fluororesin material, which contains a fluororesin material and an electroconductive material dispersed in the fluororesin material, and exposed to the valve chamber.

This design allows for maintaining a good closed state while avoiding a rapid pressure increase due to the water hammer phenomenon. [Solution] The device comprises a contact portion 24a that comes into contact with the valve seat, a deformable portion 24b that is elastically deformed when opening and closing, and a plate-like portion 25 made of a material with higher hardness than the contact portion 24a and the deformable portion 24b, to which the contact portion 24a and the deformable portion 24b are attached. The plate-like portion 25 is provided with a convex portion 25a that is inserted into a cylindrical portion having a valve seat at its tip. The contact portion 24a is provided with an insertion hole 24ha through which the convex portion 25a can be inserted, and an annular projection 24p that surrounds the insertion hole 24ha and has a smaller diameter than the inner diameter of the cylindrical portion, projecting toward the seating direction of the contact portion 24a to the valve seat. The projection length of the annular projection 24p is defined such that the insertion length of the contact portion 24a into the cylindrical portion when the contact portion 24a is seated on the valve seat is shorter than the insertion length of the convex portion 25a into the cylindrical portion.

Some embodiments include a fluid valve assembly with an outlet base dimensioned to be positioned through a drain in a fluid tank, and a float assembly including a moveable float. The moveable float can form a fluid-tight seal at a first end when the moveable float is coupled to the outlet base, and a flow opening when the moveable float is at least partially decoupled from the outlet base. Some embodiments include a housing positioned with the moveable float, where the housing encloses a suction device coupled to a moveable piston. Some embodiments include an actuable diaphragm positioned in the outlet base, and a compressed air tube or passageway coupled to one side the actuable diaphragm. In some embodiments, the actuable diaphragm is configured and arranged to be actuated by compressed air to move the moveable piston.