182results about "Spindle sealings" patented technology

The application discloses a new energy special filtering type corrugated pipe stop valve, and aims to solve the problem of poor sealing effect between a valve core and a valve seat in the prior art. The application solves the above technical problem through the following technical scheme: comprising a valve body and a valve cover, the valve body and the valve cover cooperate to form a cavity, the two sides of the valve body are respectively provided with a water inlet channel and a water outlet channel which are communicated with the cavity, the water inlet channel is connected with an inclined blowdown channel, and the blowdown channel is communicated with the cavity through a vertical channel; a valve rod assembly comprising a valve rod, the valve rod is arranged in the valve cover, and the bottom of the valve rod is provided with a ball head valve core; a filter assembly comprising a filter screen arranged in the blowdown channel. Through the arrangement of the filter screen, the medium can be filtered, the solid particles are reduced to adhere to the sealing abutting ring, the sealing performance between the ball head valve core and the sealing abutting ring is improved, and the sealing effect between the ball head valve core and the valve seat is improved.

The application provides a deep-sea rapid blocking valve and a use method. The rapid blocking valve comprises a valve body, a valve cover and a valve rod. The valve body is internally provided with a valve cavity. The valve cover is connected with one side of the valve body to form a closed space. A flow channel is arranged in the valve cavity. A one-way valve structure and a two-way valve structure are arranged along the flow channel. The inner side end of the valve rod extends into the valve cavity and is connected with the one-way valve and the two-way valve in linkage. The one-way valve and the two-way valve are both provided with sealing structures between the valve body and the inner wall of the valve body. The L-shaped integrated valve body type is arranged in a side-mounted structure. The two-way ball valve is integrated in the interior. The structure is compact, light in weight, small in size, reduces the external leakage points of the valve, is convenient to install, improves the pressure-bearing capacity and the sealing capacity.

This utility model belongs to the field of valve technology, and specifically relates to a butterfly valve, which includes a valve body, a butterfly plate, a valve stem, a linkage mechanism, and a drive mechanism. The valve body has a flow channel, and the axis of the valve stem is offset relative to the central axis of the butterfly plate. The linkage mechanism has an input end and an output end connected to the valve stem, and the input end is offset relative to the output end. The drive mechanism is connected to the input end. Offsetting the valve stem relative to the centerline of the butterfly plate allows the butterfly plate to make point contact with the flow channel during opening and closing, thereby reducing wear between the flow channel and the butterfly plate and improving the service life of the butterfly valve. Furthermore, under the action of the linkage mechanism, the drive mechanism is offset relative to the output end, that is, relative to the valve stem. This setting ensures that the driving force of the drive mechanism is smoothly transmitted to the valve stem, avoiding additional torque imbalance caused by the valve stem offset, thereby reducing local wear between the flow channel and the butterfly plate and further improving the service life of the butterfly valve.

A valve opening / closing member and a direct-acting shutoff valve are provided with a valve flap, in which a valve body sealing gasket and a valve body sealing gasket fixing ring configured to fix the valve body sealing gasket to the valve flap are provided on one side of the valve flap in that order, the valve flap has a valve flap body, a male threaded post is provided concentrically below the valve flap body, the valve body sealing gasket fixing ring is provided with a female threaded hole to be screwed onto the male threaded post, and a sealing structure is provided on the side of the male threaded post away from the valve flap body, and the sealing structure prevents a medium from entering a gap between the male threaded post and the female threaded hole.

The invention relates to a safety valve closure (1) for adjusting valves (40, 40'), comprising an inner sleeve (10) and an outer sleeve (20) arranged concentrically within one another, wherein the two sleeves (10, 20) are axially movably arranged relative to each other at a defined stroke height (5) and can be moved from a pulled position to a depressed position and vice versa by pushing or pulling the outer sleeve (20) towards the inner sleeve (10), wherein the inner sleeve (10) encloses a valve chamber (11) for screwing onto a valve (40, 40'), and the outer sleeve (20) has a handle (21) for adjusting a valve (40, 40') in use, and wherein both sleeves (10, 20) have interlocking teeth (6) and recesses (7) which are axially limited such that they are only engaged in the depressed position. interlock, causing the sleeves (10,20) are rotary-coupled and wherein, in the pulled position, the outer sleeve (20) is decoupled from the inner sleeve (10) and can be rotated freely, wherein, in the pulled position, the outer sleeve (20) projects at least by the stroke height (5) beyond the upper end of the inner sleeve (10) and has a radial bore (23) axially immediately above the upper end of the inner sleeve (10), into which a bolt or shackle of a lock can be inserted to secure the valve position, which mechanically prevents the sleeves from being pressed against each other, so that no valve adjustment can occur. The invention also relates to a safety valve closure (1) with a valve (40, 40') and a safety valve (40') with an additional sealing system (51).

To provide a fluid control valve capable of increasing the stroke amount.SOLUTION: A diaphragm member 34 has a center located on the extension line of an axial center CL of an operation rod 9 and is spherically crown-shaped swollen to the side of the operation rod 9. At the peak, it is held from both sides in the direction parallel to the axial center CL by a first holding piece 93 contacting the diaphragm member 34 from the side of the operation rod 9 and a second holding piece 323 contacting the diaphragm member 34 from the side of a valve element 32. The first holding piece 93 and the second holding piece 323 are formed in a circle-shape located coaxially with the operation rod 9, and a diameter D11 of the first holding piece 93 is longer than a diameter D of the second holding piece 323. The face of the first holding piece 93, opposed to the diaphragm member 34, is formed to be swollen to the side of the diaphragm member 34, as a convex face 94 having a center on the axial center CL of the operation rod 9.SELECTED DRAWING: Figure 2

The utility model relates to the technical field of fused salt, concretely to a high-risk working condition intelligent diagnosis stop valve in the field of fused salt, including valve body and upper valve body, the upper surface fixed connection of valve body has lower flange, and lower flange and upper valve body are fixed and installed together through fixed bolt, and the medium flow cavity is formed between valve body and upper valve body, the upper surface center of upper valve body is equipped with the work groove that penetrates, and the valve rod is arranged in the work groove, the bottom end of valve rod extends to the inside of medium flow cavity, and the bottom end of valve rod is fixedly connected with the prevention of rotary valve half. The high-risk working condition intelligent diagnosis stop valve in the field of fused salt is equipped with a gas detector, which can monitor in real time whether the key part of the valve has a leakage, and once the bellows is damaged, harmful gas leaks into the work groove and the detection channel, the detector immediately issues an alarm, so that the operator can know the leakage danger in the first time and take emergency measures in time.

Valves that include a hollow valve stem with an internal heat transfer fluid that naturally circulates within the stem acts as a heat pipe to the valve bonnet to prevent fluid within the valve from freezing. This approach protects the valve body, stem, bonnet and sealing material such as valve packing or a bellows from being damaged by frozen fluid at any location within the valve.

This utility model discloses a ball valve with good sealing performance, relating to the field of ball valve technology. It includes a housing, inside which a ball is rotatably disposed. A fixed cylinder is fixedly disposed at the upper end of the housing, and a rotating rod is rotatably disposed inside the fixed cylinder. The lower end of the rotating rod is fixedly connected to the ball, and a sealing ring is connected between the rotating rod and the fixed cylinder. A rotating disk is fixedly connected to the upper end of the rotating rod. A water passage hole is fixedly opened in the middle of the ball, and a flow-diverting annular groove is provided inside the ball. During use, this utility model avoids friction between the first and second hollow sealing rubber bodies and the inner wall of the housing when the ball rotates, reducing their wear rate. This solves the problem in existing ball valves where the sealing rubber ring wears down during ball rotation, resulting in poor sealing performance and reduced practicality.

The utility model proposes helium corrugated pipe stop valve belongs to stop valve technical field, including valve body, the valve body one end is equipped with feed inlet, the valve body other end is equipped with discharge gate, the valve body top is provided with sealing assembly, sealing assembly is used for sealing between valve body and bonnet, sealing assembly includes bonnet, the bonnet sets up at the connection flange top, the bonnet is connected together with the connection flange through fixed bolt, the bonnet top outside is equipped with the packing gland of installation, the first valve rod is installed in the valve body and is equipped with, the first valve rod bottom outside is equipped with the valve flap of installation, the inner wall of bonnet is equipped with internal thread, the valve flap is located at feed inlet and discharge gate intercommunication, the valve flap bottom is conical structure, the first valve rod outside is equipped with the corrugated pipe main part of installation. The utility model is equipped with sealing assembly, adopts the corrugated pipe main part to replace the packing, and the valve core sealing element adopts the nested structure, realizes good sealing effect.

This invention relates to the field of valve stem sealing technology, specifically a valve stem sealing structure and a gate valve, including an installation sleeve fitted onto the top of the gate valve body. A valve stem is screwed to the top of the gate valve, and a handle wheel is fitted onto the top of the valve stem. A telescopic bellows is fixed to the top of the installation sleeve, and a connecting ring is fixed to the top of the telescopic bellows. A connecting ring is rotatably connected to the top of the connecting ring, and the connecting ring is fixed to the bottom surface of the handle wheel by screws. A threaded interface is provided on the surface of the connecting ring. The beneficial effects are: through the cooperation of the rubber clamping ring, clamping block, and limiting ring, a stable locking position is formed between the installation sleeve and the valve body, effectively preventing the installation sleeve from falling off. Furthermore, the elastic hanging plate and locking strip design of the limiting ring achieves reliable anti-detachment limiting; the sealing and protective structure composed of the telescopic bellows and related components can protect the area where the valve stem extends out of the valve body, preventing external dust adhesion.

The utility model discloses throttle valve outer slide sleeve sealing structure, including outer slide sleeve, valve cover, disc spring, packing ring no.

To provide a shutoff valve capable of reducing wear on a metal valve body by suppressing the pressing force of high-pressure gas and the elastic repulsive force of a spring from acting simultaneously on the valve body when the valve is shut off. [Solution] A casing (2) having a flow path (3) for a working fluid (e.g., high-pressure hydrogen gas) extending in the direction of the central axis, a valve stem (1) extending in the direction of the central axis, a valve body formed at the tip of the valve stem, a valve seat formed near the end of the flow path (3), an actuator (11) provided at the end of the casing (2) opposite the valve seat in the direction of the central axis and having the function of moving the valve stem (1) in the direction of the central axis, an elastic repulsive force eliminating device (20) having the function of eliminating the elastic repulsive force of a valve stem engagement portion operating spring (4), and a valve stem operating shaft accommodating device (40) having the function of eliminating the elastic repulsive force of a pressure adjustment spring (44).

This utility model relates to the field of valve technology, and more particularly to an ultra-high pressure shut-off valve. The utility model includes a test flange and a valve body. A connecting pipe is mounted on the top of the test flange, a lens gasket is mounted between the test flange and the connecting pipe, a valve seat sleeve is mounted above the connecting pipe, a guide bushing is mounted on the inner side of the valve body, a valve stem is slidably connected to the inner side of the guide bushing, and a packing sleeve is fixed to the inner side of the valve body. A packing assembly is located at the bottom end of the packing sleeve. This utility model provides an ultra-high pressure shut-off valve that uses a hydraulic cylinder as a power source to generate a thrust of 630 kN under 16 MPa hydraulic pressure, which is transmitted to the gland nut through a connecting disc and an elastic pin. The gland nut is connected to the guide bushing via a bracket, forming a rigid transmission chain that drives the valve stem to move linearly. This design utilizes the constant force characteristics of the hydraulic system to ensure stable opening and closing of the valve stem under high-pressure fluid conditions.

The invention relates to a solenoid valve for controlling fluid flows (S), comprising a valve housing (2), at least one valve inlet (14) and at least one valve outlet (15), which are flow-connected to each other via a valve seat (12), and a plunger (3) movable along an actuating direction (R), which can be adjusted between an opening position releasing the valve seat (12) and a closing position closing the valve seat (12) by energizing a solenoid coil (4), wherein the plunger (3) is connected at its end facing the valve seat (12) to a diaphragm (6) fixed relative to the valve housing (2), the diaphragm (6) having a transverse deformation area (9) for compensating actuating movements of the plunger (3).

This application discloses an angle valve, a flash evaporator, and a method for regulating the inlet pressure of the flash evaporator, solving the technical problem of unstable inlet pressure regulation in existing flash tanks. The angle valve includes a support, a drive mechanism, a valve body, a valve seat, a lower connecting pipe, and a valve core assembly. The drive mechanism is mounted on the support. The valve seat includes a first valve chamber, a second valve chamber, and a third valve chamber connected in sequence. From the first valve chamber to the third valve chamber, the inner diameter of the valve seat first decreases and then increases. The lower connecting pipe is used to connect and communicate with the inlet of the flash tank. The valve core assembly is connected to the output end of the drive mechanism. Under the drive of the drive mechanism, the valve core assembly at least partially moves out of the second valve chamber and is spaced apart from the second valve chamber; or, under the drive of the drive mechanism, the valve core assembly at least partially moves into the second valve chamber and blocks the second valve chamber. The angle valve of this application gradually decomposes and reduces pressure during regulation, minimizing damage to pipeline equipment caused by flash evaporation. It is simple to operate and provides stable pressure regulation.

This utility model relates to the field of rotary eccentric butterfly valve technology, specifically a low-torque, high-sealing rotary eccentric butterfly valve, including a main valve body with a top connecting seat fixedly connected to the top of the main valve body. This utility model, through the activation of the inlet and outlet pumps, circulates the coolant in the storage tank along the cooling cylinder, outlet pipe, and inlet pipe, improving the efficiency of the coolant in cooling the cooling cylinder. Simultaneously, by cooling the cooling cylinder, the aging effect of high temperatures on the sealing packing on the surface of the cooling cylinder is reduced, extending the service life of the sealing packing and improving the sealing performance of the rotary eccentric butterfly valve. Furthermore, the use of a barrier mesh on one side of the inlet valve pipe filters out hard particles in the medium, reducing wear on the metal sealing surface caused by sand or rust flakes from pipes, thus improving the sealing effect of the butterfly valve. At the same time, a stirring brush scrapes and agitates the surface of the barrier mesh, preventing particles from accumulating and clogging on the upstream side of the barrier mesh.

This utility model discloses a sealing structure for an automotive anti-lock braking system (ABS) valve block, comprising: a valve body mounting base; a valve block body disposed on the upper end face of the valve body mounting base; and a valve body positioning and locking mechanism disposed on the upper end face of the valve body mounting base. The valve body positioning and locking mechanism includes two positioning locking grooves, each laterally formed on both sides of the valve body mounting base surface. These grooves, along with a sealing ring on the outer surface of the valve block connecting pipe head, a threaded annular sealing locking block on the lower end face, and a pressing rubber sealing ring, cooperate with the liquid outlet hole and sealing connection locking groove on the valve block body to form a multi-layer sealing structure. Compared to the traditional single sealing ring, this multi-layer collaborative sealing method effectively resists vibration, temperature changes, and media erosion during vehicle operation, significantly reduces the risk of sealing ring aging, deformation, and displacement, greatly improves the reliability of the sealing connection, prevents hydraulic oil leakage, and ensures the stable operation of the automotive anti-lock braking system.

This utility model discloses a ball valve with a flushing function, including a valve body, a valve cover, an actuator, a valve stem, and a ball. The valve cover is installed on the upper end of the valve body and has a shaft hole. The valve body has a valve cavity, and the valve stem passes through the shaft hole. The lower end of the valve stem is linked to the ball located in the valve cavity. A valve seat is installed in the valve body, and a bracket is installed on the upper end of the valve body. The actuator is installed on the bracket, and the output end of the actuator is linked to the upper end of the valve stem. The upper end of the valve body has a valve neck with a water inlet hole. A first plug is threaded to the outer end of the water inlet hole. The valve stem has a water inlet channel and multiple water outlet channels, which are evenly distributed on the outer circumference of the valve stem. The outer ends of the water outlet channels are connected to the valve cavity. A drain hole is provided through the bottom of the valve body. This utility model can significantly improve the flushing effect of the inner wall of the valve cavity by setting only one water inlet, which not only facilitates processing and production but also effectively extends the service life of the ball valve.

A valve for flowable media having a valve housing and an elongate closure member arranged therein and which can be axially moved in a medium channel of the valve by a controllable actuator and which in a closed position abuts a valve seat and closes a discharge opening connected to the medium channel, and which is connected to a sealing element to seal the medium channel, namely, a part-piece of an elongate bellows, which moves in an axial direction during movements of the closure member and which is a hollow member made of metal, wherein another part-piece of the bellows is fixedly supported in the valve. The relative axial position between the bellows and the valve seat is adapted to a production-related deviation of the longitudinal dimension of the bellows used from a desired longitudinal dimension so that this deviation is compensated for.

A bellows is configured for use on a valve. These configurations may include a corrugated section that is hollow to receive a valve stem therethrough. At its ends, the corrugated section can terminate at adapters. In one implementation, additive manufacturing can construct the bellows as a unitary or monolithic unit, avoiding welds or fasteners that can complicate manufacture of the parts. This techniques can create interfaces between the corrugated section and the adapters that comprises the same material as the adjacent parts.

The application relates to an ultrahigh-pressure electromagnetic valve based on underwater detection and relates to the technical field of valves. The ultrahigh-pressure electromagnetic valve comprises a connecting pipe, an electric control valve rod is arranged above the connecting pipe, a piston plate is connected to the bottom end of the electric control valve rod, the piston plate is in sliding connection with the connecting pipe, a sealing block is connected to the bottom of the piston plate, a conical groove is formed in the inner side of the piston plate, and a buffer block is in sliding connection with the conical groove. When the piston plate moves downwards to close the connecting pipe, the piston plate drives a transmission rod to rotate, the transmission rod drives the buffer block to move upwards to gradually open the conical groove at the bottom of the sealing block, the water flow can enter the inner side of the buffer frame through the gradually opened conical port, the water flow pressure when the sealing block is closed is reduced, the damage of the sealing block and the piston plate caused by the impact force is reduced, and the buffer liquid stored in the inner side of the buffer frame can flow back to the inlet end of the connecting pipe under the action of a spring.

The utility model discloses a throttle valve valve core relates to the field of throttle valve, including throttle valve shell and valve cover sleeve, the inside of throttle valve shell is passed through and is equipped with the installation pipe, the right side fixedly connected with side connecting end plate of installation pipe, the bottom fixed mounting of throttle valve shell is equipped with the interface pipe, the bottom fixedly connected with lower connecting end plate of interface pipe, still include, the bottom fixed mounting of valve cover sleeve is equipped with the communicating pipe, the bottom fixedly connected with second installation ring board of communicating pipe, the inner top wall of valve cover sleeve is provided with internal thread. Through being provided with second installation ring board, upper limit pad and bolt, can install or disassemble maintenance to throttle valve valve core, and is provided with sealing washer and sealing groove, can seal to throttle valve, ensure the stability of throttle valve valve core follow -up work, and is provided with external thread and internal thread, can disassemble replacement or cleaning to throttle valve valve body.

This utility model discloses a valve with a dustproof structure, belonging to the field of valves. It includes a valve body, a valve cover on the valve body, and a valve stem on the valve cover. A handwheel is provided on the valve stem, and a dustproof bracket is provided on the valve cover. A dustproof cover rotatably covers the valve stem on the dustproof bracket. The dustproof cover includes a main rotating cover and a secondary rotating cover. When lubrication, inspection, or operation of the valve stem is required, simply rotating the secondary rotating cover allows it to rotate along the shaft and retract into the main rotating cover, quickly exposing the valve stem without disassembling the entire dustproof cover. This greatly simplifies the maintenance process. Compared to traditional fixed or fully removable structures, where the dustproof cover needs to be completely removed for each valve stem maintenance, making the operation cumbersome, this utility model uses a rotating opening and closing design. Only the secondary cover needs to be rotated to expose the valve stem, making the maintenance process more efficient.

The utility model discloses a novel four-way stop valve, including silk bolt, nut, bonnet, middle flange steel ring, valve stem, valve stem head, valve seat sealing ring, valve seat, o ring, valve body, hand wheel, indicator, shield, connecting sleeve, packing gland, valve stem packing, stop ring, internal hexagonal cylindrical head screw. The novel four-way stop valve adopts four -way interface, is connected with the field pipeline through bolt, and the overall structure is compact, can save the installation space, is favorable to arrange the on -the -spot liquid discharge operation, and the valve body adopts the integral forge piece, and the material strength is higher, and the safety is better, and the valve stem head adopts the conical design, and the valve seat cone surface is attached seal, and the fluid resistance is smaller to cut off, furthermore, the valve stem head and valve stem are split design, and the replacement or maintenance sealing surface is simple and quick, saves the maintenance work hour and cost.

This invention discloses a pressure-balanced composite sealing ball valve, comprising a valve body, a valve stem, a valve core, and a composite sealing structure. The valve body has a fluid channel and a first mounting hole, which communicates with the fluid channel. At least a portion of the valve stem is connected to the interior of the first mounting hole, and the valve stem can be driven to rotate. The valve core is disposed inside the valve body and is movably fitted with the valve stem. The valve stem has a balance hole, and the valve core has a guide hole, which communicates with the guide hole. The composite sealing structure is fitted around the outer circumference of the valve stem and is sealed to the inner wall of the first mounting hole. When the fluid channel is open, fluid enters the first mounting hole, contacts and forces the composite sealing structure to deform axially on the valve stem. This ball valve employs a composite sealing structure, ensuring a good seal between the valve stem and valve body even under high pressure, high-frequency operation, or the penetration of small molecule media. Simultaneously, the balance hole on the valve stem reduces the operating torque of the valve stem.

A sealing assembly for use in a fluid regulating device comprising a seal jacket (60) having a channel (64) formed therein, where the channel has opposed side wall portions and the seal jacket is sized and configured for seating in a channel formed in the fluid regulating device, and a biasing member (70) that is sized and configured for seating in the channel and is formed from at least first and second layers. The first layer is formed from a first metal material and the second layer is formed from a second metal material different than the first metal material. The biasing member places a force on the side wall portions of the channel when mounted therein. The first and second layers of the biasing member can be secured together to form a bimetallic biasing member.

A gate valve having an opening / closing speed control ability is presented. In order to control the opening / closing speed, the present disclosure presents a housing; an air cylinder configured to move a first shaft vertically upward to a first position, the first shaft connected to the air cylinder; a cam unit including a cam attached to the first shaft at one end; a second shaft connected at the opposite end of the cam and configured to move to a certain height as the cam moves; a first bellows provided around the second shaft; a sealing plate provided at one end of the second shaft and configured to close a passage to / from a chamber; a sealing ring provided around the sealing plate and configured to seal the passage when the sealing plate closes the passage; and a CDA unit configured to control the opening / closing speed of the gate valve.