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19832results about "Lift valve" patented technology
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Valve member including cavity, and related assemblies, systems, and methods
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.
Owner:VULCAN IND HOLDINGS LLC
Valve seat with embedded structure and related methods
An embodiment of a valve seat for a pumping assembly includes a body having a bore. In addition, the valve seat includes an embedded structure embedded in the body so as to define, at least partially, a strike face of the valve seat. The strike face extends circumferentially about the bore, and the embedded structure includes a gradient material structure having a first material, a second material spaced from the first material, and a compositional transition region between the first material and the second material.
Owner:VULCAN IND HOLDINGS LLC
Gradient material structures and methods of forming the same
A valve seat for a pumping assembly. The valve seat includes a body including a gradient material structure that defines a strike face for the valve seat. The gradient material structure has a first material, a second material spaced from the first material, and a smooth compositional transition between the first material and the second material. In addition, the valve seat includes a bore extending through the body.
Owner:VULCAN IND HOLDINGS LLC
System and method for valve assembly
A valve assembly includes an upper portion to be coupled to guide legs, a cavity being formed within one of the upper portion or the guide legs and a coupling member being associated with the other of the upper portion or the guide legs, wherein the upper portion is coupled to the guide legs via a single force application process.
Owner:VULCAN IND HOLDINGS LLC
Valve member including cavity, and related assemblies, systems, and methods
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.
Owner:VULCAN IND HOLDINGS LLC
Valve member including cavity, and related assemblies, systems, and methods
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.
Owner:VULCAN IND HOLDINGS LLC
Spring controlling valve
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.
Owner:VULCAN IND HOLDINGS LLC
Fixed cone valve having automatic pressure adjustment and locking functions
The present invention relates to the technical field of pipeline control valves, and provides a fixed cone valve having automatic pressure adjustment and locking functions. The fixed cone valve having automatic pressure adjustment and locking functions comprises external fixed pipes; a supporting pipe is fixedly connected to the interiors of the external fixed pipes; a fixed frame is fixedly connected to the interior of the supporting pipe; a flow dividing cover is fixedly connected to one side of the fixed frame; and a fixed disc is fixedly connected to one side of the flow dividing cover. According to the fixed cone valve having automatic pressure adjustment and locking functions, a servo motor is started, an output end of the servo motor drives a third gear to rotate, the third gear drives a second gear in meshed connection with the third gear to rotate, and the second gear drives an inner ring gear and an outer ring gear which are in meshed connection with the second gear to rotate; and when the inner ring gear and the outer ring gear rotate to drive two first gears to rotate, and the first gears rotate to drive first lead screws to rotate, connecting plates located on the outer side and connected by means of a ball nut pair drive a sealing blocking pipe to horizontally move, so as to control the water outflow amount, achieving the accurate adjustment effect.
Owner:CAMBRIDGE VALVE IND GRP CO LTD
Rigidity valve
PendingCN119532450Aquick responseImprove sealingOperating means/releasing devices for valvesLift valveVALVE PORTValve seat
The invention provides a rigidity valve which comprises fixed iron, a valve element and a valve seat. The valve core is sleeved in the fixed iron and the valve seat; the valve element can move in the axial direction relative to the fixed iron and the valve seat so as to selectively open or close a valve port in the valve seat. The stress areas of the upper surface and the lower surface of the valve element are equal, so that the upward gas pressure and the downward gas pressure borne by the valve element are equal. Through the configuration, the operation comfort and the response speed of the rigidity valve are improved, meanwhile, the sealing performance is improved, and the sealing stability is improved.
Owner:UNITED AUTOMOTIVE ELECTRONICS SYST
Pneumatic valve with an SMA actuator
ActiveDE102023208359A1Spindle sealingsOperating means/releasing devices for valvesFluid intakeSpring force
A pneumatic valve is proposed, comprising a fluid supply port (P), a fluid outlet port (A), and a fluid drain port (R), a valve chamber (14) with a fluid supply port (FZ) connected to the fluid supply port (P), a fluid outlet port (VH) connected to the fluid outlet port (A), and a trigger port (VT) connected to an actuator chamber (15) of the valve, which includes the fluid drain port (R), an actuator (16) which, in the unactuated state of the actuator (16), presses a sealing element (E) against the trigger port (VT) and, in the actuated state of the actuator (16), releases the trigger port (VT), and a diaphragm (M) which divides the valve chamber (14) into two areas, a first area (1) being connected to the trigger port (VZ) and a second area (2) being connected to the fluid outlet port (VH), wherein the diaphragm (M) is connected to a The plunger (S) is connected,which is pressed against the fluid drain opening (VH) by a spring force in the unactuated state and releases the fluid drain opening (VH) in the actuated state of the actuator (16), wherein the diaphragm (M) has at least one through-opening (D) through which fluid can flow from the first region (1) to the second region (2), wherein the through-opening (D) has a smaller cross-section than the trigger opening (VT).
Owner:CONTINENTAL AUTOMOTIVE TECHNOLOGIES GMBH
Automatic cleaning valve and semiconductor processing equipment
ActiveCN222753857UFinal product manufactureSemiconductor/solid-state device manufacturingSemiconductorVALVE PORT
The embodiment of the utility model relates to the technical field of valves, in particular to an automatic cleaning valve and semiconductor processing equipment. The valve comprises a valve body, a valve plate and a cleaning part. The valve body comprises a front valve body and a rear valve body which are arranged in the fluid flowing direction, and fluid flows from the front valve body to the rear valve body. The valve plate is arranged on a fluid flowing path in the front valve body, and the opening degree of the automatic cleaning valve is controlled through rotation of the valve plate; the cleaning part comprises a scraper and a telescopic component which are arranged between the rear valve body and the front valve body, and a driving piece for pushing the scraper to move along the inner wall of the valve body. According to the automatic cleaning valve and the semiconductor processing equipment provided by the embodiment of the invention, valve sediments can be automatically cleaned, the downtime of the equipment is shortened, and the working efficiency is improved.
Owner:SHANGHAI BANGXIN SEMI TECHNOLOGY CO LTD
Choke system with capacity for passage of large debris
Embodiments include a choke system that passes enlarged debris despite having a relatively small diameter for an input port of the choke system. Embodiments also include systems to prevent dislodging of a choke seat when backpressure is supplied to the choke system. Embodiments also include sealing systems to prevent fluid leaks around the choke seat of the choke system.
Owner:SRI ENERGY INC
Smoke damper capable of responding quickly
InactiveCN119289111Amove fastExtended range of movementOperating means/releasing devices for valvesLift valveResponse sensitivityFlue gas
The invention relates to the field of flue accessories, in particular to a flue gas baffle door capable of quickly responding, which is characterized in that through a vent hole formed in a door plate and a plugging block linked with a piston disc, the plugging block is far away from the vent hole when being extruded by flue gas, and a flowing gap of which the flowing area is gradually increased as the plugging block is far away from the vent hole is formed between the plugging block and the vent hole; meanwhile, the spring installed at the end of the piston disc is matched, so that the plugging block moves along with the smoke discharge capacity, the circulation area of the circulation gap is dynamically adjusted, passive response adjustment of the circulation area is achieved, and the situation that a traditional door blocking plate can only be electrically adjusted through a mechanical traction mechanism is replaced; the timeliness of flow area adjustment and the response sensitivity are improved; in addition, through a magnetic ring installed in the piston disc and an electromagnetic coil installed in the shell wall of the piston barrel, the electromagnetic coil is used for driving the magnetic ring and the piston disc on the outer side of the magnetic ring to transversely move in the piston barrel, and faster active response adjustment is achieved.
Owner:JIANGSU HANTANG ENVIRONMENTAL PROTECTION TECH CO LTD
High-temperature-resistant butterfly valve for engine
PCT designated stage expiredWO2025050980A1Valve members for heating/coolingInternal combustion piston engines
Disclosed is a high-temperature-resistant butterfly valve for an engine. The high-temperature-resistant butterfly valve for an engine comprises: a valve body (1), a main sealing valve seat (21), and a fixed housing (2) penetrating an upper surface of the middle part of the valve body (1), wherein a valve rod (6) is rotatably mounted inside the fixed housing (2), heat dissipation fins (201) are provided on the outside of the fixed housing (2), and the upper portion of the fixed housing (2) is connected to a power mechanism (3) by means of screws; and a buffer protection assembly, which is mounted on the left side surface of a valve plate (7) and in the interior of the valve plate. Impact force of materials in the valve body (1) on the valve plate (7) can be reduced and counteracted by means of the buffer protection assembly, thereby facilitating protection for the valve plate (7). In the high-temperature-resistant butterfly valve for an engine, a cooling liquid circularly flows in a spiral pipe so as to cool the valve plate, such that the valve plate can operate well in a manner of resisting high-temperature; and air in a connecting air-pouch can apply a leftward force to a pressing plate and a rotating shaft rod, and then the leftward force and the impact force can counteract each other so as to reduce a part of the impact force, thereby reducing the impact force of the materials in the butterfly valve on the valve plate.
Owner:SHUANGHENG VALVE
Buffer type nuclear power stop valve suitable for high-pressure environment
PendingCN119244761Aavoid enteringavoid scratchesOperating means/releasing devices for valvesValve members for absorbing fluid energyNuclear powerPhysics
The invention discloses a buffer type nuclear power stop valve suitable for a high-pressure environment, and relates to the technical field of nuclear power stop valves, the side face of a valve body is fixedly connected with a connecting component, and one end of the valve body is fixedly connected with a cleaning component. By means of the structure, the screen plate filters impurities in fluid, the impurities mixed with the fluid are prevented from entering the valve body and scratching the side face of the valve body, meanwhile, the fluid impacts and enters the valve body through the screen plate, the fluid impacts the screen plate, and therefore the fluid is prevented from entering the valve body. The mesh plate drives the ejection mechanism to be far away from the mesh plate through the telescopic rod, meanwhile, through impact force of fluid to the mesh plate, part of impact force is absorbed, impact of the fluid to the valve clack during opening is relieved, and an effective buffering effect can be provided in a high-pressure environment.
Owner:KAIRUITE VALVE
Dustproof valve for ventilating duct
The dustproof valve comprises a valve device, a shutter protecting cover is connected to the front portion of the valve device, a rear connecting dust collecting frame is connected to the rear portion of the valve device, a valve shell is arranged in the valve device, a driving device is installed on the outer wall of the valve shell, even number of valve inner guide blocks are installed in the valve shell, and valve bodies are arranged between the even number of valve inner guide blocks. When the valve body is opened, the valve body is driven by the driving device, so that the valve body is reset to a 90-degree horizontal ventilation state after being opened and closed by 135 degrees, a sliding frame connected with an ejector rod is jacked by a lower top sealing plate on a side sliding rail by the same degree and then is reset synchronously, a dust screen in a dust screen winding drum is stretched in the jacking and resetting process, and the dust screen is prevented from being blocked. According to the dust-proof net, the net body is matched with the cleaning assembly to form brushing, dust adhering to the surface of the net body falls into the collecting box to be collected under brushing, then dust cleaning work on the dust-proof net is completed under the condition that the dust-proof net is not disassembled, and the normal operation state of the air volume and the ventilation system in the long-time use state is ensured.
Owner:FUJIAN RISING FOOD CO LTD
Fluid couplings with an in-line flow valve
Owner:COLDER PRODUCTS CO
Normally-open high-flow switching electromagnetic valve and hydraulic control unit of automobile brake system
ActiveCN119196102AImprove flow capacityImprove sealingOperating means/releasing devices for valvesServomotor componentsHydraulic control unitControl theory
The invention provides a normally-open large-flow switching electromagnetic valve and a hydraulic control unit of an automobile braking system. The electromagnetic valve comprises an electromagnetic coil, a valve shell, moving iron, a valve element, a small-flow valve seat and a large-flow valve seat. A containing space is formed in the valve shell, a valve element, a small-flow valve seat and a large-flow valve seat are sequentially arranged in the containing space from top to bottom, the valve element is connected with the moving iron, the electromagnetic coil is arranged around the moving iron and the valve shell, a first elastic piece is arranged between the valve element and the small-flow valve seat, and the small-flow valve seat is connected with the large-flow valve seat through a second elastic piece. When the electromagnetic coil is powered off, the valve element opens the small-flow opening, and the small-flow valve seat opens the large-flow opening, so that the electromagnetic valve is opened with large flow. When the electromagnetic coil is powered on, the valve element seals the small-flow opening, and the small-flow valve seat seals the large-flow opening, so that the electromagnetic valve is closed. The electromagnetic valve can meet the requirement that an oil inlet and an oil outlet of the electromagnetic valve are normally opened and keep high overflowing capacity, and therefore pressure can be rapidly regulated and controlled.
Owner:TIANJIN YINSHI PRECISION TECH CO LTD
System and method for valve assembly
A valve assembly includes an upper portion to be coupled to guide legs, a cavity being formed within one of the upper portion or the guide legs and a coupling member being associated with the other of the upper portion or the guide legs, wherein the upper portion is coupled to the guide legs via a single force application process.
Owner:VULCAN IND HOLDINGS LLC
Cage-type dual wedge throttle valve
PCT designated stage expiredWO2025140195A1Valve members for absorbing fluid energyFluid removalReciprocating motionStructural engineering
A cage-type dual wedge throttle valve, comprising: a housing having an inner cavity; a valve cover arranged at the top of the housing; a valve seat arranged in the inner cavity, wherein the valve seat comprises an outer valve seat and an inner valve seat, and a plurality of flow holes are distributed on the peripheral wall of the outer valve seat; a valve core, which comprises two wedge-shaped surfaces and two cylindrical surfaces which are axially symmetrically arranged about the central axis, wherein the cylindrical surfaces face the direction in which a fluid flows into the inner cavity, and the cylindrical surfaces can fit the inner wall of the inner valve seat; and a valve stem having the two ends respectively connected to a driving device and the valve core, wherein under the driving of the driving device, the valve stem can drive the valve core to reciprocate in the valve seat in the axial extension direction of the valve stem. By means of the above solution, primary throttling is achieved when a fluid passes through the outer valve seat, and secondary throttling is achieved as the valve core gradually extends into the inner valve seat; moreover, the valve core comprises wedge-shaped surfaces, and a long throttling stroke is formed, thereby improving the throttling switching performance of the throttle valve; the symmetrical arrangement of the two wedge-shaped surfaces can balance the pressure on the two sides, thereby improving the stability of the valve core under force.
Owner:CHINA NAT PETROLEUM CORP +2
Pipeline pressure relief structure and pressure relief valve comprising same
PendingCN119617156AExtended service lifeImprove sealingOperating means/releasing devices for valvesPipe elementsGear wheelMechanics
The invention discloses a pipeline pressure relief structure and a pressure relief valve with the pressure relief structure, and relates to the field of pressure relief valves, the pipeline pressure relief structure comprises a main valve, a tower-shaped valve core, a pressure gauge, an amplification gear and a labor-saving lever, and changes the situation that in the prior art, precision of a pilot valve is adjusted through a needle valve, and the needle valve and the pilot valve need to continuously play a sensing role through similar structures such as springs; a tower-shaped valve element is arranged in a main valve to conduct multi-section control over flow, then driving force on the tower-shaped valve element is amplified in a multiplied mode through a hinge rod, an amplification gear and a labor-saving lever, accurate adjustment of the tower-shaped valve element is guaranteed, and the control precision of equipment is guaranteed. In addition, the pressure gauge is connected in the pilot valve through the oil bag, and the carry block facilitating adjustment of the elastic force of the piston by the spring is arranged, so that the pilot valve can be calibrated according to the display of the pressure gauge and the flow change of the main valve, the service life of the pressure relief valve structure is prolonged, and more accurate adjustment and use of the pressure relief structure are ensured.
Owner:GANSU SPECIAL EQUIP INSPECTION & TESTING RES INST (GANSU SPECIAL EQUIP INSPECTION & TESTING GRP)
Eccentric butterfly valve
PendingCN120701759AOperating means/releasing devices for valvesPressure relieving devices on sealing facesWater flowButterfly valve
The invention relates to the technical field of butterfly valves, in particular to an eccentric butterfly valve which comprises an eccentric valve body, a butterfly valve plate, a valve rod, a movable brake block and a transmission assembly, a water flowing cavity is formed in the eccentric valve body, the valve rod is rotationally installed on the eccentric valve body, the butterfly valve plate is rotationally installed on the valve rod, a sealing ring is fixedly installed on the butterfly valve plate, and the movable brake block is fixedly installed on the sealing ring. The sealing ring is attached to the water flowing cavity, two through holes are formed in the butterfly valve plate, two movable brake blocks corresponding to the through holes are installed on the butterfly valve plate in a sliding mode, and the transmission assembly is connected with the valve rod and the movable brake blocks at the same time. The through hole is formed in the butterfly valve plate, the movable brake block corresponding to the through hole is arranged, the movable brake block is controlled to change the opening and closing state of the through hole, impact force borne by the two sides of the butterfly valve plate from liquid when the butterfly valve plate rotates to open the water flowing cavity is reduced, the service life of the butterfly valve plate is prolonged, and the maintenance frequency of the eccentric butterfly valve is reduced.
Owner:赵昱博
Mute electromagnetic valve
ActiveCN222316094UIncreased durabilityImprove stabilityOperating means/releasing devices for valvesValve members for absorbing fluid energySolenoid valveImpact noise
The utility model relates to the field of electromagnetic valves, and discloses a mute electromagnetic valve. The mute electromagnetic valve comprises a framework provided with a cavity, a coil is arranged on the peripheral wall of the framework, a movable iron core and a static iron core are coaxially arranged in the cavity, a mute pad is arranged at the end, facing the movable iron core, of the static iron core in a sleeved mode, a protruding ring is arranged at the end, facing the movable iron core, of the mute pad, and when the movable iron core and the static iron core attract each other, the movable iron core and the static iron core attract each other. Through the design that the annular end face of the convex ring abuts against the end face of the movable iron core, the impact contact area generated when the movable iron core and the static iron core are attracted is reduced, and the impact noise generated when the movable iron core and the static iron core are attracted can be effectively reduced.
Owner:SHANGHAI LIANXUN INTELLIGENT CONTROL TECH CO LTD
Pipeline double-seal stop valve structure
The invention provides a pipeline double-seal stop valve structure, which belongs to the technical field of stop valves, and comprises a valve body and a screw rod arranged on the valve body, and the upper end of the valve body is provided with a sealing port. Compared with conventional single-side sealing, the two valve clacks are arranged at the upper end and the lower end of the sealing opening, the sealing performance of the valve can be remarkably improved through double-side double sealing, it is ensured that media do not leak, and when the valve is in a closed state, sealing of the upper valve clack and the lower valve clack can more effectively prevent the media from leaking; the other valve clack can provide additional sealing protection, meanwhile, under the high-pressure environment, the sealing structures of the upper valve clack and the lower valve clack can provide higher mechanical strength, the overall sealing effect of the valve is improved, meanwhile, connection between a cavity between the upper valve clack and the lower valve clack and the outside is effectively blocked through the arrangement of the sealing air bag, and therefore the sealing effect of the valve is improved. Pseudo connection between the upper valve clack and the lower valve clack is achieved, the sealing area is increased, the pressure borne by the valve clacks is reduced, and then the sealing effect is improved.
Owner:ANHUI GUOQIN INTELLIGENT TECH CO LTD
Rigidity adjusting valve for multi-cavity air spring for passenger car
The invention belongs to the technical field of vehicle control, and particularly relates to a stiffness regulating valve for a multi-cavity air spring for a passenger car, comprising a communicating air passage, one end of the communicating air passage is used for communicating with the air spring, the side wall of the communicating air passage is provided with an air port, and the joint of the communicating air passage and the air spring is provided with a first sealing part; the rigidity valve shell is fixedly connected to the other end of the communicating air channel, the communicating air channel and the rigidity valve shell are provided with second sealing parts, and the air port is located on the outer side of the rigidity valve shell; the piston is used for controlling the opening degree of the air port, the piston is arranged in the communicating air channel in a sliding mode, and a third sealing part is arranged between the communicating air channel and the piston; the sliding driving part is used for driving the piston to slide in the communicating air channel; the output end of the speed reduction part is in transmission connection with the sliding driving part; the input end of the driving part is in transmission connection with the input end of the speed reduction part. When the air spring is used, the opening degree of the air port is controlled by driving the piston to move in the communicating air channel, and then the rigidity of the air spring is adjusted.
Owner:SUZHOU CAR TECHNOLOGY INTELLIGENT CONTROL TECHNOLOGY CO LTD
A proportional control valve and control method and system thereof
PendingCN119778527AOperating means/releasing devices for valvesLift valvePressure curveEVACUATED CONTAINER
The present application discloses a proportional control valve and its control method and system, which relate to the field of pressure control valves. The method includes selecting a matching PID segment according to the pressure control target pressure of the vacuum container chamber and the current air intake flow rate; outputting a control signal using the selected PID segment according to the pressure control target pressure of the vacuum container chamber, the current chamber pressure and the current air intake flow rate; regulating the opening of the proportional control valve according to the control signal; obtaining the real-time pressure of the vacuum container chamber during the pressure control process to form an actual pressure curve; if the difference between the final pressure in the actual pressure curve and the pressure control target pressure is greater than the preset error, the coefficient of the PID segment is automatically adjusted to re-control the opening of the proportional control valve until the difference between the final pressure in the actual pressure curve and the pressure control target pressure is less than or equal to the preset error. The present application can match various different pressure control requirements and ensure the pressure control accuracy of the vacuum container chamber.
Owner:NINGBO HIPER VACUUM TECH CO LTD
Gradient material structures and methods of forming the same
A valve seat for a pumping assembly. The valve seat includes a body including a gradient material structure that defines a strike face for the valve seat. The gradient material structure has a first material, a second material spaced from the first material, and a smooth compositional transition between the first material and the second material. In addition, the valve seat includes a bore extending through the body.
Owner:VULCAN IND HOLDINGS LLC
Valve with replaceable hard inserts
A valve includes a valve disc movable along an axial direction and has an arcing outer engagement surface with an axis of curvature transverse to the axial direction. A valve seat defines a central opening aligned with the axial direction. The valve seat has a toroidal radially inner engagement surface around the central opening configured to engage the engagement surface of the valve disc in a closed position. The engagement surface of the valve disc and the engagement surface of the valve seat are configured to form a line of contact between the outer engagement surface and the inner engagement surface. The engagement surfaces of the valve disc and of the valve seat may be a carbide or ceramic material having a hardness of 1000 HV or more.
Owner:WANNER ENGINEERING INC
Special working condition corrosion-resistant valve
The invention discloses a special working condition corrosion-resistant valve and relates to the technical field of valves, the special working condition corrosion-resistant valve comprises a valve body, a valve rod, a butterfly plate and a transmission device, and a valve seat containing cavity is defined by a limiting ring and a valve seat gland in the valve body on one side of the butterfly plate; a valve seat which can only slide in the axial direction of the valve body slides in the valve seat containing cavity in a sealed mode, and the whole valve seat is completely contained in the valve seat containing cavity. A metal sealing ring is fixedly installed on the outer periphery of the butterfly plate, and a valve seat sealing face matched with the metal sealing ring in a sealing mode is arranged on the inner side of the valve seat. And an elastic element is arranged between the valve seat and the valve seat gland. According to the three-eccentric butterfly valve, through the collaborative design of the three-eccentric structure, the hidden valve seat, the L-shaped fluid channel and the self-adaptive plugging assembly, the advantages of the three-eccentric butterfly valve are reserved, the defect of exposed design of a traditional valve seat is overcome through structural innovation, and it is ensured that the valve is accurate in action and reliable in sealing in the opening and closing process; and the sealing structure is particularly suitable for special working conditions with strict requirements on sealing performance and service life.
Owner:HUHANG TECH GRP CO LTD +1
Electric stop valve
Owner:ZHEJIANG DUNAN HETIAN METAL CO LTD