1683results about "Slide valve" patented technology

The invention relates to the technical field of valves, in particular to a high-pressure-resistant quick opening and closing flat valve which comprises a valve body, a first valve seat, a second valve seat, a valve plate and a valve rod. The first valve seat and the second valve seat are arranged in a medium channel of the valve body, the valve plate is arranged between the first valve seat and the second valve seat in a sealing and sliding mode, and the valve rod is in driving connection with the valve plate. The middle of the valve rod is slidably connected to a valve deck in the middle of the top of the valve body, the hand wheel driving mechanism is connected to the upper portion of the valve deck, a pressure relief pipeline is arranged on the valve body, and the two ends of the pressure relief pipeline are communicated with a high-pressure side cavity, back to the valve plate, of the first valve seat and a low-pressure side cavity, back to the valve plate, of the second valve seat respectively. The pressure relief pipeline is provided with a pressure relief control valve used for controlling connection and disconnection of the pressure relief pipeline. The pressure difference generated by high-pressure fluid on the two sides of the valve plate can be balanced before the valve plate is opened, the main factor causing huge operation torque is fundamentally eliminated, opening and closing of the valve plate are extremely labor-saving and rapid, and rapid opening and closing under the high-pressure working condition are achieved.

A gate valve includes a valve body having a through-bore and gate a cavity that are substantially perpendicular to each other; an upper bonnet coupled to the valve body; an operator housing coupled to the valve body; a gate slidably disposed within the gate cavity; a piston, at least partially disposed within an interior cavity of the operator housing; an operator coupled to a first end of the piston; an operating stem, at least partially disposed within the gate cavity, an upper bonnet interior cavity, and the operator housing interior cavity. The operating stem is coupled to the piston and to the gate. The operating stem is coupled to the piston with a free floating connection to provide lateral movement of the operating stem relative to the piston. A t-shaped adapter may be used to connect the operating stem to the piston in a free floating manner.

A proportional valve includes a casing and a valve trim. The casing has at least one fluid inlet, a fluid outlet, at least one first connection passageway, at least one second connection passageway and an accommodating space. The first connection passageway is connected with the fluid inlet. The second connection passageway is connected with the fluid outlet. The valve trim is located in the accommodating space, including a flow splitter an adjusting rotor. The flow splitter has at least one third connection passageway and at least one fourth connection passageway. The third connection passageway is connected with the first connection passageway. The fourth connection passageway is connected with the second connection passageway. The adjusting rotor has a channel and at least one blocking portion. The adjusting rotor is rotatably disposed on the flow splitter so that the blocking portion blocks a part of the third connection passageway.

The utility model discloses an anti-blocking regulating valve which comprises a valve body, a valve cover installed on the valve body, a support installed on the valve cover, an actuator installed on the support and a valve rod connected with the actuator. The bottom of the valve body is detachably provided with a bottom cover and a filter cartridge arranged between the bottom cover and the valve body; the bottom cover is provided with a plurality of flushing holes, a flushing chute communicated with the flushing holes and a cleaning discharge port communicated with the cleaning discharge port. Impurities in liquid can be filtered by arranging the filter cartridge, and blockage caused by accumulation of the impurities in the liquid flowing to the valve element is prevented, so that normal use of the valve is guaranteed; impurities generated after the interior of the valve body and the filter cartridge are flushed can flow into the flushing chute through the flushing hole, and uniformly flow to the cleaning discharge port through guiding in the flushing chute to be uniformly discharged, so that the interior of the valve can be flushed without disassembling the valve, and the flushing convenience is improved.

The utility model belongs to the technical field of gate valves, and particularly discloses a gate plate limiting mechanism for a hard sealing gate valve, which comprises a valve body, the outer surface of the valve body is fixedly connected with two symmetrical fixing blocks, one side of each fixing block is provided with an adjusting groove, and the inside of each adjusting groove is slidably connected with two symmetrical first moving rods. The limiting mechanism comprises two first moving rods, the interiors of the first moving rods are of hollow structures, the interiors of the two first moving rods are both slidably connected with second moving rods extending to the exteriors of the first moving rods, and the two second moving rods are both fixedly connected with positioning plates. The two-way threaded rod drives the two first moving rods to move relatively under the limitation of the adjusting groove, the two positioning plates can move relatively, meanwhile, the two positioning plates can clamp, position and limit an external pipeline, and therefore the device can be installed on the external pipeline more smoothly.

The present invention provides a method to produce a triple seal in a reversible gate valve utilizing only two seals that seal between the seat and the valve body on each of two seats in the gate. The method utilizes a hybrid seal configuration with only one U-shaped seal and one O-ring on each seat. The U-shaped seal on each seat is the primary seal, which is an upstream seal. Should the primary seal leak then the O-ring forms a secondary upstream seal. Should the secondary upstream seal leak then the valve is constructed so that the O-ring on the downstream seat creates a downstream tertiary seal. Since the seal configuration on each seat is the same, the valve is reversible. In other words, regardless of orientation of the valve with respect to upstream and downstream, the method of the present invention produces a gate valve with a triple seal.

A break check valve can include one or more rotating members configured to rotate to alter the break check valve from an open position to a closed position upon dislocation of a pipe system fitting, the break check valve being altered from an open position to a closed position when acted upon by fluid within a piping system.

The invention provides a bidirectional sealing type high-performance slurry valve, and belongs to the technical field of slurry valves. The number of the supports is two, and the two supports are fixedly connected to the two sides of the surface of the valve body correspondingly. The support is fixedly connected to the upper parts of the surfaces of the two brackets; the rotating assembly is arranged in the support; the flashboard is connected into the valve body in a sliding mode and connected with the rotating assembly, and the flashboard is controlled to slide in the valve body through operation of the rotating assembly; by using the device, the surface of the flashboard is cleaned through the cleaning assembly, attachments and water stains on the surface of the flashboard are removed, corrosion of the attachments and the water stains to the surface of the flashboard is effectively avoided, the performance of the device is improved, the sealing performance of the flashboard is improved, and the service life of the device is prolonged.

A distribution valve includes a cylindrical valve body rotatably fitted into a valve main body having a first outlet, a second outlet, and an inlet, and a driver for rotating the valve body, and the distribution valve distributes fluid flowing from the inlet into the valve body to the first and second outlets. The valve body has a peripheral wall portion and a bottom surface portion that function as seal surface portions to close the first and second outlets and the inlet. The peripheral wall portion is formed with first and second opening portions configured to continuously change opening areas of the first and second outlets. The bottom surface portion is formed with a third opening portion configured to change an opening area of the inlet within a predetermined range. A valve seat member is arranged in the inlet, causing a seal portion to adhere to the bottom surface portion.

The present invention discloses a gate valve with an upper side and lower side relative the throughbore whereby the lower side is defined by a non-circular outer body. A circular body cavity is on the upper side and a rectangular body cavity is the lower side and a portion of the first side whereby the gate is operable to move up and down within the body cavities. A skirt assembly having spacers is used which is inserted over the gate to cover the gate opening when the gate is moved to the closed position to limit debris and other contaminants from entering the body cavity. The valve may be used with manual, hydraulic, failsafe operators that are interchangeably mountable to the same gate valve without otherwise changing the gate valve.

The invention relates to the technical field of semiconductor equipment manufacturing and sealing, and particularly discloses a plasma-resistant valve plate sealing assembly and a preparation method and application thereof. The assembly comprises a metal base body, an elastic sealing piece, a PFA isolation belt and an infiltration body between the metal base body and the PFA isolation belt, during preparation, the elastic sealing piece in a specific shape is installed in an outer-layer annular groove, then a PFA melt in an inner-layer annular groove is subjected to hot press forming, the PFA melt and the surface layer of the elastic sealing piece are mutually infiltrated and fused through high temperature and high pressure to form a transition layer, namely the infiltration body, and the PFA isolation belt and the metal base body are combined. According to the finished product, plasma erosion is blocked through the PFA isolation belt, the structural stability is improved through the infiltration layer, the dust generation amount and weight loss are remarkably reduced, the service life is prolonged, and the valve plate sealing assembly is suitable for semiconductor plasma process equipment.

The invention relates to the technical field of gate valves, in particular to a pneumatic double-parallel gate valve which comprises a valve body, a pneumatic equipment body is fixedly mounted on the outer wall of the valve body, a connecting pipe is fixedly mounted on the outer wall of the bottom of the valve body, and a top plate is fixedly connected to the upper portion of the inner wall of the connecting pipe. An opening mechanism is arranged in the connecting pipe, a driving mechanism is arranged below the opening mechanism, and a linkage mechanism is arranged in the driving mechanism. The gate plate body continuously rotates in the opening or closing process, all-directional and dynamic self-cleaning can be conducted on the sealing face of the gate plate body, impurities attached to the sealing face are effectively removed through the self-cleaning mode, the problem that sealing is not tight due to the fact that the sealing face is not clean is solved, the service life of the gate plate body is prolonged, and the maintenance cost is reduced; the situation that the flashboard body can only rotate by means of water pressure is avoided, and the situation that the flashboard body cannot be driven to achieve automation under the working condition of low water pressure is correspondingly prevented.

The utility model discloses a sluice valve with an anti-locking function, and particularly relates to the technical field of sluice valves, the sluice valve comprises a sluice valve body, a hollow cavity, an electric heating wire and a wire slip ring, the upper end of the sluice valve body is provided with a connecting seat, the upper end of the connecting seat is provided with a valve cover, the upper end of the valve cover is provided with a limiting support, and an inner cavity of the limiting support is provided with a valve rod; the hollow cavity is formed in the center of an inner cavity of the valve rod, the electric heating wire is installed in an inner cavity of the hollow cavity, a wire sliding ring is installed in the center of the upper end of the rotating hand wheel, and a gate plate is installed at the bottom of the valve rod. The hollow cavity and the electric heating wire are arranged, the electric heating wire can continuously and stably obtain electric energy in the rotating process of the valve rod through the wire sliding ring, generated heat can be evenly transmitted to the whole rod body from the inside, the whole valve rod is kept at a certain temperature, the valve rod is prevented from being frozen, and the service life of the valve rod is prolonged. Normal opening and closing operation of the valve can be guaranteed, and the situation that the valve is stuck or cannot work normally due to freezing is avoided.

A slit gate is disclosed. The slit valve gate includes a base portion configured to be coupled to the slit valve actuator and including a first angled alignment feature. The slit gate further includes a sealing portion coupled with the base portion. The sealing portion is configured to establish a hermetic seal between the slit valve gate and a sealing surface of the slit valve opening. The slit gate further includes a clamping portion coupled to the base portion. The clamping portion includes a second angled alignment feature configured to interface with the first angled alignment feature of the base portion to align the clamping portion relative to the base portion. The clamping portion at least partially retains the sealing portion between the clamping portion and the base portion.

This invention relates to a fluid sealing device comprising a sealing member comprising a first surface and an opposite second surface. A first region of the first surface for forming a first seal about an aperture of a process component containing a fluid, and an inner region of the first surface to be exposed to the fluid via the process component aperture. A restraining member providing a support surface facing the second surface, a perimeter portion of the restraining member interfacing with a first region of the second surface, the first regions of the first and second surfaces corresponding with a first region of the sealing member. An inner region of the second surface spaced from the support surface to form a cavity between the inner region of the second surface and the supporting surface at least in an unpressurised condition. The inner regions of the first and second surfaces corresponding with an inner region of the sealing member, the inner region of the sealing member moveable towards and away from the support surface under action of a pressure of the fluid on the inner region of the first surface to provide an indication of the pressure.

The utility model discloses an anti-particle combination valve, which comprises a valve body, a valve core, a valve core and a valve core, the driving mechanism is connected to the side wall of the valve body; one end of the valve rod is connected with the driving mechanism; the valve element is arranged in the valve body and connected with the other end of the valve rod, when the valve rod is linked by the driving mechanism, the valve element is linked by the valve rod, the valve element moves in the valve body, and the gas channel is opened or closed; the protection piece is connected to the side wall of the valve body and arranged opposite to the driving mechanism, one end of the protection piece makes contact with the gas channel, and the valve element abuts against the protection piece when the gas channel is closed by the valve element; the protection piece is made of stainless steel; the part, making contact with the protection piece, of the valve element is made of stainless steel. Therefore, the technical problem that particles generated by contact friction between the valve element and the valve body pollute a vacuum system is solved.

A multi-port valve includes a valve housing, a valve core rotatably mounted to the valve housing and a sealing gasket disposed between the valve housing and the valve core. The valve housing defines a plurality of valve ports. The valve core defines a plurality of flow channels. The sealing gasket is provided with a plurality of openings arranged at intervals in a circumferential direction and a plurality of first ribs respectively arranged between adjacent two of the openings. The flow channels extend through an end of the valve core facing the sealing gasket to define a plurality of channel ports; the channel ports are arranged at intervals in a circumferential direction with a plurality of second ribs respectively arranged between adjacent two of the channel ports. each of the first ribs or second ribs forms two wing portions at circumferential sides thereof to make a portion of the first or second rib has a larger circumferential width than other portion thereof.

The double-valve-body softening valve with the roller structure comprises a first valve body and a second valve body, the first valve body is provided with a water inlet, a first water outlet and a salt suction opening, the second valve body is provided with a water outlet and a second water outlet, a first roller is rotationally arranged in a first valve cavity in a sleeved mode through a first driving device, and a second roller is arranged in a second valve cavity in a sleeved mode through a second driving device. A second roller is rotationally sleeved with the second valve cavity through a second driving device, and the first roller and the second roller are controlled to rotate anticlockwise through the first driving device and the second driving device correspondingly, so that butt-joint openings in the rollers communicate with through holes in the valve body inner barrel correspondingly. Therefore, the passage between different chambers and the water outlet, the water outlet or the salt suction port is realized, so that the functions of normal operation, backwashing, regeneration, conventional washing or water replenishing of the softening valve are realized. The internal structure of the valve body is simple, the waterway switching logic is convenient, and the space in the valve body is utilized to the maximum extent, so that the water passing area and flux are remarkably improved, and the water treatment efficiency is greatly improved.

The utility model relates to the technical field of pipeline valves, in particular to an intelligent electric ore pulp flow regulating valve which comprises a valve body and a valve plate, the valve body is composed of a transverse flow channel and a vertical valve plate installation channel, and the valve plate installation channel is arranged in the middle of the flow channel. The valve plate is driven by the electric device to ascend and descend in the valve plate installation channel to achieve flow adjustment in the flow channel, the electric device is fixed to the upper portion of the valve body, lining high-elasticity rubber is arranged in the flow channel of the valve body and the valve plate installation channel, and outer lining high-density rubber is arranged outside the valve plate. The intelligent electric ore pulp flow regulating valve is not limited by the flow direction of a medium, two-way medium circulation can be achieved, the electric device can control the valve plate in the valve to suspend, channel medium flow limitation is achieved, and the sealing effect can be achieved in the completely closed state.

The blind plate valve comprises a valve seat and a cut-through assembly, the valve seat is provided with an inlet, an outlet and a channel which is arranged between the inlet and the outlet and communicates with the inlet and the outlet, and the cut-through assembly comprises a cut-through piece, a transmission component and at least three driving units. Wherein the cut-through piece further forms a cut-off part capable of blocking the channel and an annular opening communicated with the channel, and the transmission component is driven by all the driving units to rotationally drive the cut-through piece to rotate until the cut-off part or the annular opening of the cut-through piece is located in the channel. All the driving units are arranged on the valve seat in a central symmetry mode with the center position of the channel as the symmetry center and located on the outer side of the channel so that the gravity centers of at least three or more driving units can be located at the center position of the channel, and therefore the driving units can easily drive the cut-through piece to rotate. And the channel is closed and opened.

The present invention relates to a valve arrangement. The present invention further relates to a fluid flow control element. Furthermore, the present invention relates to a turbomachine system comprising such a valve arrangement and / or fluid flow control element. Moreover, the present invention relates to a method and a use relating to the valve arrangement and / or the fluid flow control element.

A valve device (30) is provided with a cylindrical passage-forming member (40) and a cylindrical spool valve (60) that is slidable with respect to the passage-forming member (40). The passage-forming member (40) has a communication port (56) that communicates the inside and the outside in the radial direction. The slide valve (60) has at least one cut portion (62, 63) cut from one end surface (61) in the axial direction (Rs). The degree of communication of the cutout portions (62, 63) with respect to the communication port (56) can be adjusted by relative displacement of the spool valve (60) with respect to the passage forming member (40).

The utility model discloses a gate valve casting with a dovetail groove matched with a valve seat, and relates to the technical field of mechanical engineering. The gate valve casting with the dovetail groove matched with the valve seat comprises a valve body, a valve cover, a support, a hand wheel, a valve rod and a valve plate, a limiting device is arranged on the valve plate and comprises two connecting blocks and two dovetail blocks, the two dovetail blocks are fixedly connected to the two sides of the interior of the valve body, and the outer walls of the two connecting blocks are correspondingly connected with the interiors of grooves in the outer walls of the two sides of the valve plate in a sliding mode. Two T-shaped block grooves are formed in the inner walls of the grooves in the two sides of the valve plate, T-shaped blocks are fixedly connected to the outer walls of the two sides of the two connecting blocks, fixing bolts in limiting devices are screwed to be separated from the fixing bolt grooves, then the connecting blocks can be taken out of the valve plate, and parts such as the connecting blocks can be conveniently maintained or replaced; therefore, destructive means such as cutting and the like for replacement are avoided, the practicability of the equipment is effectively improved, the maintenance and repair cost is reduced, and the production continuity is improved.

The utility model discloses a water layer regulating valve which comprises a valve body and a gate plate installed on the valve body, and water outlets are formed in the gate plate and the valve body. A limiting piece is further arranged in the valve body, and a plurality of limiting grooves of the same structure are further formed in the back face of the gate plate. And the limiting piece is connected with the limiting grooves in different positions by pulling the flashboard, so that the opening degree of the water outlet is adjusted. In conclusion, due to the fact that the limiting piece is placed in the valve body, the problem that the limiting piece falls off can be avoided, and the phenomenon that the limiting piece falls off in the gate transportation process is avoided; meanwhile, the limiting piece is located in the valve body and cannot be washed away by water flow, and the reliability of water layer adjustment is effectively guaranteed; besides, the limiting piece is matched with the limiting groove, so that after the gate plate is pulled, the limiting piece can be matched with the limiting groove, the gate plate can be locked easily and conveniently, and compared with the prior art, locking of the gate plate is simpler and more convenient.

The invention provides a heat exchanger on-line switching system in an acid making process, which relates to the technical field of sulfuric acid preparation and comprises two sets of plate heat exchangers, two sets of differential pressure trigger components, a three-way valve, a valve core component, two sets of check valves and two sets of cooling components, the differential pressure trigger assembly comprises a power connection part and two deflection parts which are located on the outlet sides of the heat exchangers and deflect reversely under pressure, two outlets of the three-way valve are connected with the inlet sides of the two heat exchangers respectively, the valve element assembly comprises a horizontally-moving valve rod and a motor provided with a power receiving part, the valve rod is provided with a locking part, an inlet of the check valve is connected with an outlet of the three-way valve, and the opening and closing part is in linkage with the motor. When the pressure difference of the inlet and the outlet of a certain heat exchanger exceeds the limit and the driver is powered on to drive the valve rod to the first preset position, the corresponding check valve is fully opened, and when the driver is driven to the third preset position, the check valve is fully closed, and meanwhile the motor is powered off. Automatic, rapid and reliable online switching of the plate heat exchanger is achieved by integrating mechanisms such as differential pressure triggering, mechanical transmission and electric control.

The invention relates to an interchangeable holder (30) for throttle valves (40) of different sizes in a fluid-carrying system, in particular a vehicle, wherein the interchangeable holder (30) is designed such that it can be removed from the system and the throttle valves (40) can be exchanged when removed. The invention also relates to a fluid-carrying system, in particular in a vehicle, comprising at least one interchangeable holder (30), and to a vehicle.

This invention relates to the field of directional valve technology, specifically a miniature explosion-proof pneumatic directional valve with a redundant anti-jamming structure. It includes a housing with an internal air passage, a valve stem slidably disposed within the housing, a pneumatic piston connected to one end of the valve stem for driving the valve stem to reciprocate, a valve core slidably mounted on the valve stem and located within the air passage, and an anti-jamming component connected between the valve stem and the valve core. This component includes a positioning disc fixedly connected to the surface of the valve stem and an energy storage spring sleeved outside the valve stem, with both ends of the energy storage spring abutting against the positioning disc and the valve stem, respectively. When the valve core jams within the air passage, the valve stem can overcome the resistance of the anti-jamming component and continue moving relative to the valve core, allowing the anti-jamming component to store energy. When the stored energy reaches a threshold, the anti-jamming component releases the energy to drive the valve core to generate an impact motion.

A gate valve according to the present invention is configured to partition a flow path. The gate valve has a valve box, a valve body, a rotary shaft, a rotation drive unit, a pressing drive unit, a driving pressure generation mechanism, and an energy regeneration mechanism. The rotation drive unit is capable of rotationally driving the valve body. The pressing drive unit is provided in the valve box. The pressing drive unit moves the valve body, in a direction along the flow path, from a valve-opening covering position to a valve closing position at which the valve body contacts the peripheral edge portion, and presses the valve body. The driving pressure generation mechanism is connected to the pressing drive unit and is capable of causing the pressing drive unit to expand and contract. The energy regeneration mechanism regenerates drive energy for valve operation.