115 results about "Left valve" patented technology

The low-temperature ball valve comprises a valve body, a valve cavity is formed in the middle of the valve body, auxiliary sealing rings are arranged on the inner sides of the two ends of the valve body, a left valve deck and a right valve deck are detachably installed on the inner sides of the two ends of the valve body through bolts correspondingly, and valve seats are detachably installed on the outer sides of the two ends of the valve body through bolts correspondingly; a valve ball is rotationally connected to the inner wall of the valve cavity, a main sealing ring is arranged at the upper end of the valve ball, a valve rod is fixed to the middle of the upper end of the valve ball, sealing filler is arranged between the valve rod and the valve body, and a handle is detachably installed at the upper end of the valve rod through a bolt. According to the low-temperature ball valve, a worker rotates the handle to conduct rotating operation, on one hand, the supporting and sealing effects are achieved, the overall sealing performance of the low-temperature ball valve is improved, on the other hand, the automatic cleaning effect is achieved, the service life of the low-temperature ball valve is prolonged, on the other hand, the stress balance effect is achieved, and the using stability of the low-temperature ball valve is improved.

The invention discloses a FanERC ship filling active safety disengaging device which comprises a left valve body, a right valve body and an air inlet connector, the left valve body and the right valve body are fixedly connected through a breaking bolt, a sealing cavity is formed in the connecting position after the left valve body and the right valve body are connected, and the air inlet connector is fixedly arranged on the left valve body and communicates with the sealing cavity. The gas inlet connector is connected with a nitrogen releasing device, after the nitrogen releasing device receives a releasing signal sent by the main control system, the nitrogen releasing device releases high-pressure nitrogen, the high-pressure nitrogen enters the sealing cavity through the gas inlet connector, the breaking bolt is thrusted and broken through high pressure, the left valve body and the right valve body are separated, and the left valve body and the right valve body automatically achieve self-sealing. The active separation mode does not need to depend on too large tension borne by the pipeline to break the bolt, impact and damage of the tension to the LNG conveying pipeline, the filling hose and other equipment can be reduced to the maximum extent, the LNG leakage risk caused by pipeline damage is reduced from the source, and the service life and safety of filling operation related equipment are guaranteed.

The invention provides an integrated device and method for adjusting the air flow and heat of an aero-engine, and relates to the field of aero-engines. In the device, an air path shell is connected with an oil path shell, the first connecting end of a piston rod is connected with a main valve element through a connecting base, and the second connecting end of the piston rod is connected with the first connecting end of a piston; a third connecting end of the piston rod is connected with the linear displacement sensor; a second connecting end of the piston is in contact with the interior of the left valve sleeve; an oil inlet of the oil way shell is connected with an input oil port of the electro-hydraulic servo valve, an oil return port of the oil way shell is connected with an oil return port of the electro-hydraulic servo valve, the first working oil port is connected with the left valve sleeve, and the second working oil port is connected with the right valve sleeve. The adjusting method comprises the steps of air heat adjusting and air heat flow simultaneous adjusting. The flow and heat of air entering the air compressor can be distributed to prevent an aero-engine from freezing and surging, meanwhile, high-temperature gas is prevented from directly heating an oil way, and the requirements for light weight and integration of the aero-engine are met.

The utility model belongs to the field of ball valves, and particularly relates to a symmetrical ball valve which comprises a left valve body and a right valve body, the right valve body is fixedly installed on one side of the left valve body, connecting flanges are fixedly installed on the outer side of the left valve body and the outer side of the right valve body respectively, a disassembling and assembling mechanism is arranged between the two connecting flanges, a left sealing shell is installed on the top of the left valve body, and a right sealing shell is installed on the top of the right valve body. A left sealing shell is fixedly installed at the top of the left valve body, a right sealing shell is fixedly installed at the top of the right valve body, a valve element is arranged between the left valve body and the right valve body, a valve rod is fixedly installed at the top of the valve element, the valve rod penetrates through the left sealing shell and the right sealing shell and is provided with a handle, and a locking mechanism is arranged between the handle and the left sealing shell and between the handle and the right sealing shell. And a communicating hole is formed in the connecting flange. The ball valve is reasonable in design, the valve element is convenient to disassemble, assemble and maintain, meanwhile, by fixing the handle, the purpose that the handle does not move can be achieved, and the situation that the ball valve is opened and closed by mistake is avoided.

The utility model relates to a valve field technical field, a split type lock residue valve, including left valve body and right valve body, left valve body is connected through bolt and right valve body screw thread, left valve body upper end is fixedly connected with valve seat, the inner wall of valve seat is fixedly connected with sealing washer, the inner wall of sealing washer is fixedly connected with valve rod, the upper end of left valve body is connected with protection mechanism and is opened through the control aluminum alloy material's protection strip outside left valve body and right valve body, make the recess of protection strip inside will be caught on the bolt of left valve body and right valve body both ends, play the effect that protection strip protects outside, and protection cover will cover the lower end of arc -shaped seat again and protect, improve the corrosion intensity of installation position, make the stability and service life of whole valve.

The utility model discloses a ball valve convenient to disassemble and maintain, which belongs to the technical field of valves and comprises a left valve body and a right valve body, a valve core is connected to the center of the left valve body and the center of the right valve body, a hard clamping sleeve is integrally formed on one side, close to the right valve body, of the left valve body, and the hard clamping sleeve is connected with the valve core. An inner-layer inserting-connecting groove is integrally formed in the side, close to the left valve body, of the right valve body, the valve element is located in the center of the hard clamping-connecting sleeve and the inner-layer inserting-connecting groove, the left valve body and the right valve body are connected in an inserted mode through the hard clamping-connecting sleeve and the inner-layer inserting-connecting groove, and under the condition that the inserted-connecting is formed, the valve element is inserted into the inner-layer inserting-connecting groove. The high-temperature-resistant paraffin, the hot melt adhesive and other components are utilized to form a softener dynamic rigid component, so that a certain rigid connection effect can be provided during connection, a sufficient sealing effect can be promoted under the condition of connection, and certain sealing performance can still be ensured under the condition that disassembly and assembly are convenient.

This invention discloses a high-temperature resistant, zero-friction, soft-seal ball valve. The ball valve includes a valve body, a ball, a valve stem, a valve cover, and an actuator. The left valve stem has an inlet channel A, and the right valve stem has an outlet channel A, forming a first cooling circuit flowing through the ball. The valve cover has an inlet channel B and an outlet channel B, forming a second cooling circuit flowing through the valve cover. The valve body has an inlet channel C and an outlet channel C, forming a third cooling circuit flowing through the valve body. An inflatable and deflated sealing ring is provided between the valve cover, valve seat, and the ball's sealing surface. The valve cover has a vent channel connected to the sealing ring's inflation port and a pneumatic control system. The pneumatic control system includes a filter pressure reducing valve, a solenoid valve, a pneumatic control valve, a quick-release valve, and a pressure transmitter, and controls the inflation and deflation of the sealing ring through a control center. This invention cools the sealing ring through a dual cooling circuit, successfully applying soft sealing to high-temperature conditions.

The utility model relates to an axial flow type diaphragm hydraulic control valve, which comprises a left valve body, a valve seat, a valve core component, a spring, a right valve body and a piping component, the valve seat is arranged at the inlet end of the left valve body, a hollow boss and a half of a control cavity are arranged in the left valve body, the control cavity in the left valve body is provided with a through hole, and the valve core component is arranged in the through hole. The other half of the control cavity is arranged in the right valve body, and the left valve body is connected with the right valve body. The valve element assembly comprises a valve disc, a valve shaft, a forming diaphragm and a diaphragm pressing plate. The piping assembly comprises a pipe fitting, a first valve and a second valve. Compared with the prior art, the utility model has the advantages of simple structure, flexible switch, stable flow state, cavitation resistance, small vibration, scale prevention, turbulent flow elimination and the like.

The invention relates to a pneumatic ball valve, in particular to a long-service-life pneumatic ball valve and a using method thereof, and solves the technical problems that an existing pneumatic ball valve adopts a bypass pipeline to balance pressure and the design of a passive floating valve seat is limited in anti-attrition effect. A first electromagnetic valve of the pneumatic control unit injects gas into a first driving cavity and a second driving cavity through a first gas path and a second gas path respectively, a right valve seat slides through pressure change, gas is injected into the first driving cavity before a ball rotates, so that the right valve seat and a second sealing assembly are separated from the ball, and after rotation is completed, the right valve seat and the second sealing assembly are separated from the ball. Air is injected into the second driving cavity, so that the right valve seat is reset, sealing of the ball body is guaranteed, complex linkage parts or telescopic ball body design is not needed, the machining and assembling difficulty is low, upgrading and reconstruction of an existing pneumatic ball valve are facilitated, and the service life of the pneumatic ball valve is prolonged.

The application belongs to the technical field of check valves, and particularly relates to a low-temperature double-valve-piston check valve, which comprises a valve body, a positioning rod rotatably connected in the valve body, and a ring-shaped valve seat fixedly connected with the positioning rod. The positioning rod is fixedly connected with a left valve piston through an upper rotating cylinder and rotatably connected with a right valve piston through a lower rotating cylinder. A spring one is arranged between the positioning rod and the upper rotating cylinder, and a spring two is arranged between the positioning rod and the lower rotating cylinder. A steering assembly is arranged at the upper end of the positioning rod. Through the steering assembly, the positioning rod is driven to rotate by 180 degrees, and the ring-shaped valve seat, the left valve piston and the right valve piston in the valve body are all driven to rotate by 180 degrees, so as to change the check direction of the valve body and adapt to the pipeline temporarily changing the fluid guiding direction. The whole check valve does not need to be removed, and only needs to be driven to rotate by 180 degrees through the steering assembly, so that the operation is convenient and fast.

The invention provides a manual flow regulating valve which comprises a right valve body, a throttling sleeve, a ball, a rod sleeve, a valve rod, an upper cover, a hand wheel, a driving nut, a left valve body and a lower cover, flow channels are formed in the left valve body and the right valve body and comprise a first flow channel and a second flow channel, the throttling sleeve and the ball are located at the communicating position of the first flow channel and the second flow channel, and the throttling sleeve is located on the outlet side; a throttling hole is formed in the middle of the throttling sleeve; a step-shaped mounting cavity is formed in the upper cover, a mounting through hole is formed in the top of the left valve body, the rod sleeve is rotationally connected with the step of the mounting cavity and the mounting through hole, and the bottom of the rod sleeve is fixed to the ball; the valve rod is inserted into the rod sleeve and is in threaded connection with the driving nut; the driving nut moves up and down, the driving rod sleeve drives the ball to rotate, the channel communicates with the throttling hole, and the valve opening degree is adjusted through gradual rotation of the ball. And when the opening degree is adjusted to the set opening degree, self-locking is carried out. The low-torque self-locking valve can achieve low-torque sealing and self-locking, is high in structural strength and good in corrosion resistance and has the linear flow characteristic.

The utility model discloses an anti-coking, impact-resistant and vibration-resistant adjusting ball valve for coal chemical industry black water, and relates to the field of adjusting ball valves. In coal chemical industry black water treatment, a black water medium has the characteristics of high suspended matter content, high temperature, high alkali content, high corrosion content and high-hardness solid particle content, and abrasion, corrosion, coking jamming and driving failure of traditional valve internals are easily caused. Comprising a fixing shaft, a left valve body, a right valve body, a left valve seat, a right valve seat, a ball body, a valve rod and an executing mechanism, the ball body, the valve seats and valve body flow channels are spray-welded with tungsten carbide layers with the hardness larger than or equal to HRC65, the left valve seat and the right valve seat achieve two-way pre-tightening sealing through spiral springs and the ball body, and scraper type cutting edges are arranged on the sealing faces of the valve seats. The valve rod adopts a large-diameter high-strength design and is in anti-rotation connection with the ball body, and the stuffing box adopts a disc spring load limiting and pressurizing structure. The wear resistance, impact resistance and coking resistance are remarkably improved, bidirectional reliable sealing is achieved, stable driving under the high-torque working condition is guaranteed, the service life of the valve is prolonged, and the valve is suitable for the coal chemical industry black water extreme working condition.

This quick-acting check valve has two ends of its body for connecting to the feed pipe. One end of the valve body contains a guide rod, on which a left and right valve disc are fitted. The back of each valve disc has a connecting part. A screw is located inside the valve body, with one end extending out of the valve body. The screw inside the valve body is divided into upper and lower sections. The upper section has clockwise threads, and the lower section has counterclockwise threads. A sleeve is fitted on the upper section, and another sleeve is fitted on the lower section. One sleeve is movably connected to one end of a connecting rod, and the other end of this connecting rod is movably connected to the connecting part on the back of the right valve disc, driving the right valve disc to open and close. The other sleeve is movably connected to one end of another connecting rod, and the other end of this connecting rod is movably connected to the connecting part on the back of the left valve disc, driving the left valve disc to open and close. The left and right valve discs are used to open and close one end of the valve body. Advantages include: good sealing due to the connecting rod, rapid response, and improved sealing due to the beveled design.

An emergency breakaway valve belongs to the technical field of breakaway valves and comprises a left valve body assembly, a reset spring, a left valve clack, a sealing gasket, an energy storage sealing ring, a sealing valve seat assembly, a right valve clack, a right valve body assembly and a safety assembly. A plurality of fixing seats, reset springs, left valve clacks, sealing gaskets and energy storage sealing rings are fixedly installed at the outer ends of the inner sides of the left valve body assembly and the right valve body assembly respectively, the sealing valve seat assembly and the right valve clacks are installed in the left valve body assembly and the right valve body assembly respectively, and the left valve body assembly and the right valve body assembly are installed together through the safety assembly. The safety valve has a double-safety function, in practical application, when overload is caused by various external acting forces, and a snap bolt is not broken and bent, the safety pin can be effectively broken, then the two valve bodies are separated, the valve clacks on the inner sides of the two valve bodies move in place under the acting force of the spring, the combination portions of the valve clacks and the valve bodies are sealed, media are effectively blocked, and the safety valve is safe and reliable. And serious accidents caused by medium leakage are prevented.

This invention discloses a power-off compensation mechanism for a two-dimensional electro-hydraulic servo valve directly driven by an ultrasonic motor. The mechanism includes a 2D valve assembly, an ultrasonic motor, an electromagnetic transmission assembly connecting the 2D valve assembly and the ultrasonic motor, and a motor cover. The 2D valve assembly includes an LVDT body, an LVDT sensing core, a left valve end cover, a left plug, a valve body, a valve sleeve, a valve core, a concentric ring, and a right plug. The electromagnetic transmission assembly includes a braking assembly and a motion transmission assembly. The braking assembly includes a right valve end cover, a coil, a retaining ring, and a return spring assembly. The motion transmission assembly includes a first coupling, an armature, and a second coupling. This invention uses a direct-drive ultrasonic motor to move the valve core via the motion transmission assembly. Energizing the braking assembly disconnects the valve core shaft from the motor shaft, solving the problem of the ultrasonic motor jamming due to power failure. This allows for independent and effective control of the valve core even during abnormal braking and when the motor stops rotating.

The utility model provides a ball valve capable of controlling multiple pipelines, and belongs to the technical field of valve manufacturing. The problem that an existing ball valve is not safe enough in use is solved. The ball valve capable of controlling the multiple pipelines comprises a valve body, a left valve rod and a right valve rod are installed on the left side and the right side of the front side of the valve body respectively, limiting inserting shells are fixedly connected to the surfaces of the left valve rod and the right valve rod, a fixing shell is fixedly connected to the middle of the front side of the valve body, and a positioning spring is movably connected to an inner cavity of the fixing shell; supporting inserting plates are fixedly connected to the left side and the right side of the positioning spring, positioning inserting shells are fixedly connected to the left side and the right side of the bottom of the valve body, a liquid collecting shell is inserted into the bottoms of the positioning inserting shells, and an optical liquid sensor is fixedly connected to the bottom of an inner cavity of the liquid collecting shell in a penetrating mode. The ball valve has the advantages that the function of preventing mistaken touch operation is achieved, the ball valve is prevented from being opened or closed due to mistaken touch, the use safety is improved, the liquid leakage alarm function is achieved, and personnel can maintain the ball valve in time.

The utility model discloses a liquid impact resistant compressor four-way valve, and relates to the technical field of four-way valves. The anti-impact valve comprises a valve body, a first anti-impact structure and a second anti-impact structure. The valve body comprises a valve seat located on the inner wall of the valve body, a valve block installed at the upper end of the valve seat in a sliding mode, a U-shaped valve pipe installed in the valve block in an embedded mode, a left valve bowl body and a right valve bowl body, wherein the left valve bowl body and the right valve bowl body are fixedly arranged at the two ends of the valve block. The first anti-impact structure comprises ring seats fixedly arranged on the inner walls of the two openings of the U-shaped valve pipe, stress blocks located in the ring seats and facing the opposite directions, and first springs fixedly arranged between the stress blocks and the ring seats. Through the arrangement of the first impact-resistant structure, the problems that in the using process of the valve block, fluid conveyed inside impacts the inner wall of the U-shaped valve pipe at the turning position of the U-shaped valve pipe, liquid impact on the inner wall of the U-shaped structure is large, loss of the inner wall of the adjusting valve block is large, and the service life of the adjusting valve block is shortened are solved.

The utility model belongs to the technical field of hydraulic locks, and discloses a hydraulic lock capable of measuring hydraulic pressure after locking, which comprises a valve body and a valve component, a sliding cavity is arranged inside the valve body, a left mounting hole is arranged at one end of the valve body in the length direction, the left mounting hole is communicated with the sliding cavity, and the valve body is provided with a left oil inlet, a left oil outlet and a left detection port. The valve assembly comprises a left valve seat and a sliding valve, the sliding valve is arranged in the sliding cavity in a sliding mode and peripherally sealed on the cavity wall of the sliding cavity, one end of the left valve seat is peripherally sealed on the cavity wall of the sliding cavity, and the other end of the left valve seat blocks the left mounting hole. One end of the sliding valve extends into and blocks a left through hole formed in one end of the left valve seat, the middle area of the left valve seat is matched with the hole wall of the left mounting hole to form a left lock rear cavity, the left through hole can be communicated with the left lock rear cavity, and the left lock rear cavity is communicated with the left detection opening; a left detection opening is formed in the hydraulic lock, procedures are reduced, and the hydraulic pressure after locking is monitored in real time.

The application discloses a refrigeration system, a use method and a refrigeration device. The refrigeration system comprises a throttling valve, an evaporator, a first three-way valve, a compressor, a second three-way valve, an ejector, a one-way check valve, a condenser, a connecting valve, a working medium pump and a generator. The throttling valve is connected with the evaporator, and the evaporator is connected with the first left valve. The first right valve and the second right valve are connected with the ejector. The first upper valve is connected with the compressor, and the compressor is connected with the second lower valve. The ejector and the second left valve are connected with the condenser, and the one-way check valve is arranged between the ejector and the condenser. The second branch of the condenser is connected with the throttling valve, the first branch of the condenser is connected with the generator, the generator is connected with the ejector, and the working medium pump and the connecting valve are arranged between the condenser and the generator. Through flexible adjustment of the first three-way valve, the second three-way valve and other valves, flexible coupling of a waste heat driven ejector type and a vapor compression type refrigeration cycle mode is realized, and the adaptability to variable refrigeration working conditions is remarkably improved.

The invention relates to a high-temperature and high-pressure parallel double-disc gate valve and an opening and closing method thereof, and relates to the field of valves. According to the technical scheme, the baffle-free design is adopted, the left flashboard and the right flashboard are clamped through the protruding steps on the two sides of the pull ring to be prevented from being disengaged, a traditional welding baffle structure is abandoned, and the welding procedure is omitted to reduce the production cost; the pull ring is installed in the bottom groove of the T-shaped groove of the connecting block, the lower end of the valve rod is used for pressing and limiting, fastening screws are abandoned for fixing, and the safety risk that the screws fall into a valve cavity is eradicated. The connecting block is installed in an open mode, the valve rod is installed from the side of the T-shaped groove, the time-consuming valve rod sleeving and threaded connection procedures are abandoned, the assembling efficiency is improved, and internal parts are convenient to replace. The left flashboard and the right flashboard are installed on two sides of the connecting block, connected with the spring in a pressing mode and arranged between the left valve seat and the right valve seat, the spring provides initial sealing force, the valve can be effectively prevented from being jammed or stuck under the high-temperature working condition, and smooth operation is guaranteed. In addition, the circular flashboard can rotate freely during action, so that a sealing surface is worn uniformly, and the service life of the valve is prolonged.

The application discloses a self-cleaning multifunctional valve assembly, which comprises a valve, a bushing arranged outside the valve, a spring seat and an oil filter connected with the bushing respectively, a second hole and a third hole arranged on the side of the bushing, a fourth hole arranged on the side between the spring seat and the oil filter, an adjusting washer arranged in the fourth hole, a first hole arranged at one end of the valve, a big spring arranged at the other end of the valve, a cap arranged outside the oil filter, a small spring arranged in the oil filter, and a left valve oil passage cavity and a right valve oil passage cavity separated by a connecting part in the bushing. The application can realize the functions of cooling, cleaning and pressure boosting, reduces the influence of the ambient temperature rise on the turbine starter under the condition that the turbine starter does not work while the aero-engine works, and ensures the normal work of the turbine starter. Moreover, the pressure boosting function of the structure ensures that the fuel supplied to the turbine starter has a certain pressure.

The application relates to an ultra-low temperature top-mounted on-line maintenance bidirectional check valve, which comprises symmetric guide rings arranged at two ends of a valve body; a left valve clapper and a right valve clapper are assembled in rotation in the valve body; a spring steel sheet is arranged on an eccentric cam. A shaft sleeve is arranged at the lower end of an extended valve cover, a valve rod passes through the shaft sleeve in the extended valve cover, the lower end of the valve rod is assembled into an eccentric cam assembly, and the valve rod is fixed through a nut lock and a pin shaft. The upper end of the valve rod is sequentially assembled into a valve rod Lip-seal, a packing gasket, packing, a packing pressing sleeve and a packing pressing plate, and is fastened through an inner hexagonal bolt. The top of the valve rod is operated and controlled through a handle and is fixed through a locking nut. The check valve can realize free check during LNG ship unloading, can realize bidirectional flow during the establishment of a cold-keeping cycle of an unloading arm pipeline, and can also realize free check during LNG reloading. The top-mounted check valve is convenient and fast to maintain, simple to maintain and low in cost.

The invention discloses a low-flow-resistance quick connection valve group for a compact space. The low-flow-resistance quick connection valve group comprises a left valve body, a right valve body and a U-shaped bolt, the end, facing the right valve body, of the left valve body is provided with an inner connecting part with an annular groove in the periphery. An outer connecting part sleeving the inner connecting part is arranged at one end, facing the left valve body, of the right valve body; and the U-shaped bolt penetrates out of the outer connecting part and is clamped into the annular groove so as to limit the axial movement of the inner connecting part and the outer connecting part. A traditional screw reinforcing mode is replaced with plug pin connection, the operation that a bolt needs to penetrate through a circumferential centering bolt hole when the left valve body and the right valve body are connected is omitted, the installation angle of the U-shaped plug pin relative to the left valve body can be flexibly rotated and adjusted according to the space condition, the requirement for the installation space is lowered, quick connection and disassembly of the valve assembly are achieved, and the service life of the valve assembly is prolonged. The assembly efficiency and the maintenance convenience are remarkably improved, and meanwhile the connection reliability and the sealing performance are guaranteed. The valve bank is compact in structure, easy and convenient to operate and particularly suitable for scenes needing frequent disassembly and assembly or quick response in a compact space.

The utility model relates to the field of control valves, and particularly discloses a pressure control valve for aircraft ground refueling, which comprises a left valve body and a right valve body detachably connected with the left valve body, the right valve body is provided with an inlet for conveying oil products, the left valve body is provided with an outlet, and the right valve body is provided with an inlet for conveying oil products. The inside of the left valve body and the inside of the right valve body are communicated to form a hollow cavity, a valve clack, a valve seat pressing ring and a diaphragm are arranged in the hollow cavity, the valve clack is connected with the diaphragm through a connecting rod, the connecting rod penetrates through the valve seat pressing ring, an oil connection venturi tube connector communicated with the hollow cavity is arranged on the left valve body, and the valve seat pressing ring is connected with the oil connection venturi tube connector. The right valve body is provided with an oil connection venturi joint communicated with the hollow cavity, the right valve body is provided with a gas connection venturi joint communicated with the hollow cavity, the oil connection venturi joint and the gas connection venturi joint are communicated with the same oil storage device, and the gas connection venturi joint and the oil connection venturi joint drive the valve clack to be opened and closed by controlling transverse movement of the diaphragm so as to reduce oil pressure. The oil filling control valve solves the problems that an existing oil filling control valve is complex in structure and high in manufacturing cost.

The application discloses a multifunctional air control coaxial valve, and belongs to the valve field, which is mainly composed of a valve body, a valve core, a piston valve sleeve and a limiting assembly, wherein the valve core can slide among the left position, the middle position and the right position; when the piston valve sleeve moves to the most right side and the valve core is located in the middle position, the left valve port is closed and the right valve port is opened; when the piston valve sleeve moves to the most left side and the valve core is located in the left position, the left valve port is closed; when the valve core is located in the right position, the right valve port is closed; the limiting assembly can control the sliding of the valve core; the limiting assembly can be switched among the first state, the second state and the third state; when the limiting assembly is in the first state, the limiting assembly limits the valve core in the middle position; when the limiting assembly is in the second state, the limiting assembly limits the valve core to slide between the middle position and the left position; when the limiting assembly is in the third state, the limiting assembly limits the valve core to slide between the middle position and the right position; the application can realize the control function of the medium flow direction; and the control is convenient and the operation is simple without disassembly.

This utility model discloses a quick connector assembly, including a left connector assembly and a right connector assembly. The left connector assembly includes a left spring and a left valve core, and the right connector assembly includes a right connector body. The right connector body is provided with a right spring, a right valve core, and a floating piston. The right spring can push the floating piston to the left, causing the right valve core to block the floating piston. The right end of the left connector assembly is provided with a plug-in part, and the outer wall of the plug-in part is provided with a protrusion. The right connector body is provided with a waist hole, and a locking groove is provided on the left side of one end of the waist hole. The other end of the waist hole is provided with a plug-in groove leading to the left end of the right connector body. This utility model utilizes the cooperation structure of the protrusion, waist hole, and locking groove, combined with the elastic return characteristics of the left and right springs, to replace the traditional threaded connection, realize quick plugging and locking, significantly shorten the disassembly and assembly time, and improve the ease of use of folding bicycles.

The utility model relates to a gate valve capable of injecting high-temperature and high-pressure steam in a compensation mode, which belongs to the technical field of thermal recovery gate valves and comprises a valve body and a valve seat, a valve rod and a double-valve-plate assembly are arranged inside the valve body, and the valve rod is connected with the double-valve-plate assembly in a hanging mode. The double-valve-plate assembly comprises a left valve plate and a right valve plate, and the left valve plate and the right valve plate are elastically connected through a spring. The left valve plate and the right valve plate are embedded into the hanging grooves through the hanging lugs to achieve hanging connection with the valve rod, and movable gaps exist between the hanging grooves and the hanging lugs; the left valve plate, the right valve plate and the valve seat are in inclined plane fit; the valve seat and the valve body are connected through brazing, so that the overall service life of the gate valve is prolonged; the split type double-valve-plate assembly of the asymmetric structure is adopted, the spring and the oval tensioning piece are matched to achieve double sealing, the technical problem that an existing gate valve is not tightly closed is solved, a damaged valve seat can be detached, repaired and brazed again, and the maintenance cost of the gate valve is greatly reduced; the height of the lower portion of the valve body is reduced, and manufacturing cost of the gate valve is reduced.

The utility model relates to the technical field of ball valves, and discloses a ball valve capable of reducing valve opening and closing noise, which comprises a right valve body, a valve rod is rotatably connected in the right valve body, a ball body is fixedly connected on the lower surface of the valve rod, a left valve body is arranged on the side wall of the right valve body, and a sealing assembly is arranged in the right valve body. A fixing assembly is arranged on the side wall of the left valve body. The sealing assembly comprises a sealing seat and a sealing ring, the side wall of the sealing seat is fixedly connected to the interior of the right valve body, the side wall of the sealing ring is slidably connected to the interior of the sealing seat, and a mounting seat is fixedly connected to the interior of the sealing seat. According to the ball valve, the ball body extrudes the sealing ring to drive the rotating plate to rotate and compress the first spring, the sealing ring is tightly attached to the side wall of the ball body all the time, collision noise between the ball body and the sealing ring is reduced, meanwhile, the flow guide blades can guide fluid to flow more stably in the valve body, and noise is further reduced; through the structure, the noise reduction effect of the valve is improved.

The utility model discloses a large-diameter hard-seal floating V-ball regulating valve which comprises a left valve body, a right valve body, a first valve seat assembly, a second valve seat assembly, a ball valve element, a valve rod, a filler assembly, a filler pressing sleeve, a support, a supporting piece and a limiting piece. One end of the valve rod penetrates through the mounting hole and is connected with the ball valve element, and the other end of the valve rod extends out of the mounting hole and is rotationally connected with the support. A supporting piece is arranged between the valve rod and the support, one end of the supporting piece abuts against the support, the other end of the supporting piece abuts against the limiting piece, and the limiting piece is arranged on the outer side of the valve rod in a sleeving mode and fixedly connected with the valve rod. The valve rod can be limited in the axial direction of the valve rod through the supporting piece and the limiting piece. Uniform sealing of the valve can be guaranteed through the axial limiting and lifting function of the valve rod, and cavitation erosion resistance, noise reduction and vibration reduction can be effectively achieved through the noise reduction block.

The present application relates to the technical field of valve assembly, in particular to a flow transfer conveying line system in a valve assembly production line, comprising a left valve body tank discharge conveying line arranged in a valve body assembly section, an actuator tank discharge conveying line arranged in an actuator assembly section, and an accessory conveying line arranged in an accessory assembly section, an NOK tank storage area being arranged between the left valve body tank discharge conveying line and the actuator tank discharge conveying line, an NOK valve body storage area being arranged between the actuator tank discharge conveying line and the accessory conveying line, and an NOK finished product storage area being arranged between the accessory conveying line and the end of the valve assembly production line. The technical scheme is used to solve the problem that the valve assembly production line in the prior art is not good at planning the transfer and placement path of the tank recovery, semi-finished product and finished product, which causes the disorderly placement of the articles on the valve assembly production line, affects the transfer and transportation on the assembly line, and reduces the valve assembly rate.