6468results about "Check valves" patented technology

A valve member, and related assemblies, systems, and methods, for a high-power pump may include a valve body having a valve head. The valve head may have a seal engaging surface positioned to receive a valve seal. The seal engaging surface may have a first axial position relative to a valve body axis. The valve head further may have a cavity at least partially defining a cavity interior. The cavity interior may extend between a cavity opening and a cavity end. The cavity interior may extend from the cavity opening at a second axial position spaced from the first axial position of the seal engaging surface and at least partially through the first axial position to the cavity end at a third axial position, thereby to reduce mass of the valve member and substantially maintain the strength of the valve head.

A valve member, and related assemblies, systems, and methods, for a high-power pump may include a valve body having a valve head. The valve head may have a seal engaging surface positioned to receive a valve seal. The seal engaging surface may have a first axial position relative to a valve body axis. The valve head further may have a cavity at least partially defining a cavity interior. The cavity interior may extend between a cavity opening and a cavity end. The cavity interior may extend from the cavity opening at a second axial position spaced from the first axial position of the seal engaging surface and at least partially through the first axial position to the cavity end at a third axial position, thereby to reduce mass of the valve member and substantially maintain the strength of the valve head.

A valve member, and related assemblies, systems, and methods, for a high-power pump may include a valve body having a valve head. The valve head may have a seal engaging surface positioned to receive a valve seal. The seal engaging surface may have a first axial position relative to a valve body axis. The valve head further may have a cavity at least partially defining a cavity interior. The cavity interior may extend between a cavity opening and a cavity end. The cavity interior may extend from the cavity opening at a second axial position spaced from the first axial position of the seal engaging surface and at least partially through the first axial position to the cavity end at a third axial position, thereby to reduce mass of the valve member and substantially maintain the strength of the valve head.

A valve member for a spring-loaded valve assembly includes a top portion having a spring retaining recess, the spring retaining recess extending into the top portion to form a void space, the void space to receive at least one coil of a spring, the spring retaining recess having a recess diameter that is smaller than a top portion diameter, wherein the recess diameter is larger than a rest diameter of a spring base including the coil, the spring retaining recess blocking expansion of the at least one coil when the spring is compressed. The valve member also includes a bottom portion coupled to the top portion. The valve member further includes a sealing element positioned axially below a shoulder of the top portion and legs coupled to the bottom portion.

A fluid connector system includes a first connector adjoining a second connector at a junction, and a sealing member coupled to the first connector and the second connector around the junction. The sealing member can include an annular wall having a first annular portion configured to engage the first connector and a second annular portion configured to engage the second connector. The sealing member can include an annular chamber extending between the first annular portion and the second annular portion. The annular chamber can be formed by the first annular portion sealing against an outer surface of the first connector and the second annular portion sealing against an outer surface of the second connector when a pressure between the sealing member and the first connector and the second connector is negative.

A method for managing pressure in one or more tires installed on a vehicle includes: determining, by an electronic control unit, a pressure parameter value based on one or more measured pressures; and commanding, by the electronic control unit and based on the pressure parameter value, at least one control valve to an open position to conduct fluid from an air source and to inflate the one or more tires.

The invention discloses a pilot-operated type self-driving fluid release valve, and belongs to the field of control valves. Comprising a main valve assembly, a pilot valve assembly and a one-way valve assembly. Valve bodies of the pilot valve assembly and the one-way valve assembly are integrated on a main valve body of the main valve assembly; the main valve assembly comprises a main valve body, a main valve piston, a main valve element and a main valve spring. The pilot valve assembly comprises a pilot valve air control opening, a pilot valve inlet, a pilot valve outlet channel and a pilot valve pressure relief opening. The one-way valve assembly is arranged at an outlet of the main valve and used for blocking medium backflow. Through mechanical configuration reconstruction and system integration innovation, the technical contradiction of the liquid rocket engine high-pressure gas control valve in weight, response speed and reliability is thoroughly solved.

A float collar for use in a wellbore includes: a float valve; a tubular housing having a coupling formed at a longitudinal end thereof for assembly as part of a downhole tubular; a sheath bonding the float valve to an inner surface of the housing within a flow bore thereof, the sheath having a bore formed therein; and a ball deflector seated against a top of the sheath and having: an upper grate and a lower anchor engaged with an inner surface of the sheath adjacent the bore. The float valve, the sheath, and the ball deflector are made from materials drillable by a polycrystalline diamond compact (PDC) drill bit.

The invention discloses a reverse anti-blocking check valve, and relates to the technical field of valve bodies, the reverse anti-blocking check valve comprises a check valve body, and an expansion part is arranged on the surface of a valve plate, facing the fluid direction, of the check valve body; the expansion component comprises a bearing column fixed to the center axis of the surface of the valve plate, and a limiting ring is fixed to the axial top end of the bearing column. The expansion part is arranged on the incident flow side of the valve plate, the dynamic response function in the valve opening and closing process is achieved, when fluid is impacted in the forward direction, the expansion part is unfolded under the fluid pressure effect, the contact arc plate is automatically attached to the inner wall of a pipeline, an auxiliary sealing ring is formed, and the sealing performance is effectively improved; when the fluid pressure is weakened, the expansion component retracts by means of the spring, so that the contact arc plate is separated from the inner wall of the pipeline and generates relative motion, the cleaning effect similar to that of a scraper is achieved, dirt attached to the pipe wall and the surface of a key structure can be effectively peeled off, and the self-cleaning capacity and the anti-blocking effect of the valve are improved.

The present invention discloses a transmission mechanism and a drive mechanism. The transmission mechanism includes a mounting seat, a drive shaft, and a first movable member. The drive shaft can rotate relative to the mounting seat. The first movable member and the drive shaft are synchronously rotated and assembled together, and the drive shaft can drive the first movable member to rotate relative to the mounting seat to two extreme positions and an intermediate position between the two extreme positions. The transmission mechanism also includes a second movable member sleeved outside the drive shaft. The second movable member can rotate relative to the mounting seat to a first position and a second position. An elastic body and a limiting structure are provided between the second movable member and the mounting seat, and the elastic body and the limiting structure cooperate to drive the second movable member to remain in or return to the first position. A transmission structure is provided between the drive shaft and the second movable member. The drive shaft rotates and drives the second movable member to rotate to a second position through the transmission structure. The second position corresponds to an extreme position. The transmission mechanism has the following advantages: a transmission mechanism can drive the two movable members to move to appropriate positions respectively to achieve three gear switching. The structure is simple, compact, and easy to operate.

A flow fuse valve configured to be installed inline within a primary flow channel section having an interior wall, a first flow region, and a second flow region, the flow fuse valve having: a valve body; a poppet assembly disposed within the valve body, the poppet assembly having: a first poppet section; a second poppet section; a resilient seal member disposed and captured between the first poppet section and the second poppet section, wherein the first and second poppet sections are securely fastened with respect to each other subsequent to the resilient seal member being captured therebetween; and a resilient biasing member disposed between the first poppet section and the valve body 100 that is configured to bias the poppet assembly toward an open-valve position; wherein the resilient seal member and the valve body are configured to form a fluid flow seal in response to the poppet assembly being disposed in a closed-valve position via an abrupt fluid pressure drop in the primary flow channel section downstream of the flow fuse valve, wherein the fluid flow is from the first flow region toward the second flow region.

A counterflow guide includes a body with a first end surface, a second end surface positioned opposite the first end surface, and a sidewall connecting the first end surface to the second end surface. The counterflow guide also includes a discharge passage configured to direct a fluid to discharge through the body, from a discharge inlet to a discharge outlet. The discharge inlet is formed in the sidewall and the discharge outlet is formed into the first end surface.

A check valve assembly can include a housing including an inlet port, an outlet port, and a flow chamber defined by the housing and fluidly coupling the inlet port to the outlet port, an actuation chamber, and a piston assembly movable between a closed position and an open position. The piston assembly can include a poppet positioned in the flow chamber and can be configured to sealingly engage the housing in the closed position to fluidly separate the inlet port from the outlet port, and a flange positioned in the actuation chamber. The flange can contain a sealing member positioned between the flange and the housing to fluidly separate a forward actuation chamber from a rearward actuation chamber. A shaft can extend between the poppet and the flange. A biasing member can be operably coupled to the piston assembly wherein the biasing member biases the poppet assembly closed.

The invention provides a double-row low-temperature safety valve and relates to the technical field of safety valves, the double-row low-temperature safety valve comprises a main valve body, a valve cover and a pilot valve assembly, an inlet runner and an outlet runner are arranged in the main valve body, a guide sleeve is arranged in the main valve body, a first valve element is arranged in the guide sleeve in a sliding mode, and a valve seat is arranged in the main valve body; a first sealing piece is arranged at the lower end of the first valve element, a medium containing cavity is formed between the first valve element and the valve deck and located in the guide sleeve, the pilot valve assembly is communicated with the medium containing cavity and the inlet flow channel, and the first sealing piece and the valve seat can elastically deform. The medium containing cavity is filled with media to form pressure towards the valve seat on the first valve element, so that the first sealing piece extrudes the valve seat. According to the safety valve, the first valve element and the valve seat can both deform, the sealing performance of the valve seat and the first valve element under the low-temperature working condition is guaranteed, and the sealing performance between the first valve element and the guide sleeve is remarkably improved.

The present invention relates to a check valve, in particular of a hydrogenation installation, having an inlet and an outlet which define a flow direction which extends from the inlet to the outlet. The check valve has a piston (6) movably arranged relative to the inlet and the outlet to open and close the inlet of the check valve, where the piston (6) defines a piston axis (63) by means of a first end facing the inlet and a second end facing the outlet. The piston (6) has an outer surface along which a fluid flowing through the check valve in a flow direction flows. The outlet has outlet channels (35) in order to enable the fluid to flow outward from the check valve, all outlet channels (35) of the outlet running obliquely with respect to the piston axis (63). The check valve can be used for high pressure and allows soft closing even in the event of a reversal of the pressure action. The check valve is used in particular in hydrogen refueling stations.

The invention provides a one-way valve. The one-way valve comprises a valve body, a one-way valve element assembly and a locking valve element assembly. The valve body is provided with an oil inlet, an oil outlet, a first containing cavity and a second containing cavity, the locking valve element assembly is partially located in the second containing cavity, and the locking valve element assembly is configured to be located at the first end of the second containing cavity so as to block the first end of the second containing cavity when the oil pressure of the oil inlet is not higher than a threshold value; when the oil pressure of the oil inlet is higher than the threshold value, the first end of the first containing cavity is driven by oil to move towards the second end of the second containing cavity, so that the first end of the first containing cavity communicates with the oil inlet; the one-way valve element assembly is located in the first containing cavity, and when the first end of the first containing cavity is not communicated with the oil inlet, the one-way valve element assembly moves to the first end of the first containing cavity so as to cut off the oil inlet and the oil outlet. The service life of the one-way valve can be prolonged.

The invention relates to the technical field of valve bodies, and provides a pressure reducing valve with emergency shutoff and backflow prevention functions, which comprises a main valve body, a main valve membrane and a valve core assembly, the main valve body comprises a valve cavity with a water inlet end and a water outlet end, and the main valve membrane is arranged in the valve cavity and divides the valve cavity into a control cavity and an overflowing cavity; the pressure reducing valve is in a pressure reducing dynamic adjusting state, when the pressure reducing valve is in the pressure reducing dynamic adjusting state, the shut-off reversing valve changes the position so as to close the pressure reducing pilot valve to be communicated with the water outlet end, and the pressure reducing valve is switched to an emergency shut-off state so as to be closed. When the pressure reducing valve is in the pressure reducing dynamic adjusting state, the anti-backflow reversing valve changes the position to close communication between the water inlet end and the control cavity and enable the water outlet end to communicate with the control cavity, and the pressure reducing valve is switched to be in the anti-backflow state so as to be closed. The problem that in the prior art, downstream leakage or backflow of a traditional pressure reducing valve cannot be blocked in time is solved.

The utility model discloses a straight flow type safety valve which comprises a safety valve body, the upper surface of the safety valve body is fixedly connected with an installation cover body through a flange, the upper surface of the installation cover body is provided with an annular sliding groove, and the inner wall of the annular sliding groove is slidably connected with arc-shaped sliding blocks distributed in an annular array in a sleeved mode. The upper surfaces of the multiple arc-shaped sliding blocks are fixedly connected with threaded rings, the lower surfaces of the threaded rings make contact with the upper surface of the mounting cover body, the upper surfaces of the threaded rings are fixedly connected with connecting rods distributed in an annular array, and one ends of the multiple connecting rods are fixedly connected with adjusting rotary discs. The effects that the limit value of the medium is accurately adjusted by the safety valve body, the stability of the safety valve body in use is improved, and the use safety of the safety valve body is improved by stably adjusting the pressure of the supporting spring are achieved.

The disclosed technology includes an air valve assembly for providing flexibility for a user when inflating an inflatable air mattress. The air valve assembly can include a base configured to attach to a portion of the inflatable air mattress, a middle valve configured to attach to the base portion and having a first diameter, a diaphragm member configured to attach to the middle valve, and a cap configured to removably couple to a portion of the air valve. The assembly can further include an adapter configured to detachably attach to the middle valve portion. The adapter can have a portion with a second diameter that is smaller than the first diameter such that when the adapter is attached, a user may use an inflation device with a smaller dimensioned output.

The invention discloses a check valve device adopting a dynamic pressure detection and compensation algorithm, and relates to the technical field of automatic control. The device comprises a valve, a pressure sensor group and a control part, the pressure sensor group comprises two pressure sensors which are respectively arranged at the upstream and the downstream of the valve and are used for continuously acquiring instantaneous pressure data; the control part is used for calculating the instantaneous pressure difference inside and outside the valve according to the obtained instantaneous pressure data, and performing nonlinear correction on the reference opening degree by using a correction factor to obtain the final command opening degree; the method comprises the following steps: constructing a kinetic equation of a valve core to represent an actual valve opening constraint under torque-free control; and torque control is conducted according to the deviation between the final command opening degree and the actual valve opening degree. The opening degree can be adjusted in real time to respond to the complex fluid environment, and the dynamic response performance, the energy utilization efficiency and the adaptability to complex working conditions are remarkably improved.

The invention relates to the technical field of pressure relief valves, in particular to a safety pressure relief valve for a water heater, which comprises a non-return device, an isolation device, a pressure relief device and a main valve body, the pressure relief device is arranged at one end of the main valve body, and the other end of the main valve body (6) is connected with a pressure relief interface 7; a non-return device is arranged on the side, close to the pressure relief device, of the interior of the main valve body, an isolation device is arranged at the bottom, close to the non-return device, of the interior of the main valve body, the pressure relief device is used for conducting pressure relief when the pressure in the water heater is too large, and the non-return device is used for preventing water in the water heater from flowing back into the water inlet pipe. The isolating device, the non-return device and the pressure relief device are integrated in the same valve, and the number of valves in a traditional water heater pipeline is reduced, so that the pipeline does not need to be cut into multiple sections when the valve is installed, the installation steps are simplified, and the valve is easy to install.

The utility model discloses a non-impact type electro-hydraulic control one-way valve which comprises a valve body, a control piston is arranged at the position, close to one side, in the valve body, a limiting rod is fixedly connected to the center of one side of the control piston, a rubber block is fixedly installed at one end of the limiting rod, and an ejector rod is fixedly connected to the center of the other side of the control piston. According to the non-impact type electro-hydraulic control one-way valve, through rubber blocks, a connector, a first spring, a movable block, a buffer block, a rubber ball, a second spring and a third spring, after a piston is controlled to complete actions and reset, the rubber block at one end of a limiting rod is tightly attached to the inner wall of the valve body, and impact generated when the piston is reset is further buffered through elasticity of rubber; in the moving process of the ejector rod, the buffer block stably moves towards the cone valve element, the rubber ball on the buffer block serves as a flexible part making contact with the cone valve element firstly, and the impact force and noise generated when the rubber ball makes contact with the cone valve element are effectively reduced.

A fluid end made of a plurality of fluid end sections positioned in a side-by-side relationship. Each fluid end section is made of a housing having a discharge bore and an intake bore formed therein. A fluid routing plug is installed within each housing and is configured to route fluid throughout the housing and between the discharge and intake bores. The fluid routing plug carries seals that engage sealing surfaces formed within the housing. A number of features, including the location of seals within bore walls and carbide inserts within valve guides, aid in reducing or transferring wear within each housing.

The utility model relates to a check valve with a filtering function, which belongs to the technical field of check valves with filtering functions and comprises a valve body, a filtering bin is fixed on the left side of the valve body, a liquid inlet pipe is fixed on the left side of the filtering bin, and a filtering mechanism is arranged in the filtering bin. The filtering mechanism comprises a rotating block rotationally connected to the inner wall of the left side of the filtering bin, a circular plate is slidably connected to the peripheral wall of the rotating block, a rotating rod is fixed to the right side of the circular plate, an insertion hole is formed in the left side of the circular plate, a filter screen cylinder is inserted into the insertion hole, and a limiting ring is fixed to the left side of the filter screen cylinder; a sealing plate is fixed to the left side of the circular plate, a threaded hole is formed in the left side of the filtering bin, and a sealing block is in threaded connection with the interior of the threaded hole. According to the check valve with the filtering function, the positions of the sealing plate and the filter screen cylinder can be directly exchanged without closing a main valve of a pipeline system, so that the influence of maintenance on the pipeline system is reduced, and the check valve is more convenient.

The disclosed technology includes an air valve assembly for providing flexibility for a user when inflating an inflatable air mattress. The air valve assembly can include a base configured to attach to a portion of the inflatable air mattress, a middle valve configured to attach to the base portion and having a first diameter, a diaphragm member configured to attach to the middle valve, and a cap configured to removably couple to a portion of the air valve. The assembly can further include an adapter configured to detachably attach to the middle valve portion. The adapter can have a portion with a second diameter that is smaller than the first diameter such that when the adapter is attached, a user may use an inflation device with a smaller dimensioned output.

Valve for a motor vehicle's thermal system. Valve for a motor vehicle's cooling system, comprising: - a valve body, - a bore formed within the valve body, the bore defining a passage for a fluid, in a first direction, between a first valve orifice and a second valve orifice, and - a shutter capable of moving within the bore between a first position and a second position, the first position allowing the fluid to flow in the first direction without flow limitation, the valve being characterized in that, when the shutter is in the second position, a feature in the shutter and / or in the valve body allows the fluid to pass in a second direction, opposite to the first direction, and at a limited flow rate, in particular a flow rate of less than 0.4 mL / s, or even less than 0.1 mL / s. Figure for the abstract: 5

The low-resistance range hood check valve comprises a driving ring, a longitudinal guide ring, connecting rods and a valve plate, the longitudinal guide ring is arranged in an inner ring of the driving ring, the valve plate is arranged in the inner ring of the driving ring, a plurality of inclined guide grooves are formed in the positions, corresponding to the connecting rods, of the driving ring, and a plurality of longitudinal guide grooves are formed in the positions, corresponding to the connecting rods, of the longitudinal guide ring. The connecting rod sequentially penetrates through the oblique guide groove and the longitudinal guide groove and is hinged to the valve plate. According to the low-resistance check valve for the range hood, through rotation of the driving ring and matching and limiting of the oblique guide groove and the longitudinal guide groove, the connecting rod moves up and down, the valve plate is dragged to be switched between the opening state and the closing state, and the requirement for conducting or cutting off a pipeline channel is effectively met; the movement trend that the valve plate covers the fixed base due to the dead weight or the torsion spring is avoided, it is effectively guaranteed that no pressure loss is caused to the air pressure of the draught fan in the opening state, and the oil smoke suction and exhaust effect of the range hood is improved.

The invention discloses a check valve, a liquid cooling system and a server, and relates to the technical field of valves, the check valve is characterized in that a first channel is arranged in a first valve body, and a first valve seat is arranged in the first valve body; the first valve core is movably arranged in the first valve body; according to the first valve element, a second channel is formed in a second valve body, the second valve body and a first valve seat form a first sealing pair, and a second valve seat is arranged in the second valve body; the first acting force enables the first channel to be conducted, and the forward conducting function of the check valve is achieved; when the second acting force is smaller than the opening pressure of the second valve element, the first channel and the second channel are kept closed, and the reverse cut-off function of the check valve is achieved; when the second acting force is larger than the opening pressure of the second valve element, the first channel is closed, the second channel is opened, residual liquid in the first valve body can be discharged from the second channel, liquid cannot be accumulated in the first valve body, and the check valve and the connector can be assembled in place.

The utility model discloses a one-way valve with a pressure relief protection function, and particularly relates to the technical field of one-way valves, which comprises a valve body, a discharge pipe is arranged at one end of the valve body in a penetrating manner, an outer valve sleeve is arranged on one side of the valve body in a penetrating manner, a pressure relief mechanism is arranged in the outer valve sleeve, and the pressure relief mechanism comprises a pressure relief valve seat arranged in the outer valve sleeve. A guide groove is formed in the outer valve sleeve, a guide ring is slidably arranged in the guide groove, a pressure relief valve element is fixedly arranged in the guide ring, a pressure relief spring is fixedly arranged at the top of the pressure relief valve element, an adjusting disc is slidably arranged on the inner wall of the valve body, and a threaded rod is rotatably arranged on one side of the adjusting disc. When the fluid pressure abnormally rises, the pressure relief channel can be automatically opened, the one-way valve and a conveying system are effectively protected, the position of the pressure relief valve element can be conveniently and manually adjusted, pressure relief parameters are flexibly controlled, and the requirements of different working conditions are met.

A fluid regulator includes a poppet valve within a flow path that selectively allows a flow of fluid to move from an inlet to an outlet. A threaded regulating interface adjusts a spring tension exerted toward the poppet valve and defines a regulated flow of the fluid through the flow path. A fluid purge mechanism is positioned within the threaded regulating interface. The fluid purge mechanism operates along a rotational axis of the threaded regulating interface and adjusts a boundary of the flow path and manipulates the poppet valve to a maximum operating position to define a purging flow of the fluid. A programmable logic controller cooperates with the powered actuator and a pressure sensor to define a closed-loop interface that adjusts the regulated flow of the fluid through the flow path.