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3016results about "Screw threaded joints" patented technology
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Fire protection systems and methods using fire protection devices installed in pipe fittings with an internally housed seal member
Fire protection systems and methods having piping interconnections for connecting a fire protection device to a fluid source. The piping interconnections include a branch connector connected to a pipe header. The branch connector includes a tubular member and an internal annular seal member housed in an internal gasket chamber of the tubular member. The tubular member includes an internal stepless surface between a terminal end of the tubular member and the internal gasket chamber.
Owner:MINIMAX VIKING PATENT MANAGEMENT GMBH
Air-tight seal buckle for threaded connection of petroleum pipe
ActiveCN119267663Aprevent leakageSolve the sealing problemFluid pressure sealed jointsDrilling rodsScrew threadMechanics
The invention discloses a petroleum pipe threaded connection air-tight seal buckle, and particularly relates to the technical field of petroleum pipe threaded connection, the petroleum pipe threaded connection air-tight seal buckle comprises a connecting buckle and an oil sleeve, the connecting buckle is of a cylindrical structure with two open ends, the oil sleeve is in threaded connection with the end of the connecting buckle, and two symmetrically-distributed air grooves and a first seal groove are formed in the connecting buckle; second sealing grooves are formed in the two ends of the connecting buckle correspondingly. A movable sealing assembly is arranged in the connecting buckle, a second sealing piece is arranged in each second sealing groove, a plurality of evenly-distributed air inlet pipes are arranged on the inner wall of the connecting buckle, and the second sealing pieces are communicated with the air grooves through the air inlet pipes. The first sealing piece slides in the adjusting piece, and the second sealing piece seals the bottom of the connecting buckle, so that leakage of gaps caused by connection looseness when the petroleum pipe vibrates under the impact of dynamic load is prevented.
Owner:DONGYING XIN HUALIAN PETROLEUM MACHINERY
Drain adapter
An adapter for facilitating an easy and secure connection between a sewage drainpipe and a sewage disposal inlet. The adapter includes a tubular member, at least one connection lug, a ring, and at least one flange. The tubular member forms a channel defining an inlet and an outlet, the outlet insertable into the sewage disposal site inlet. At least one flange extends from an outer surface of the tubular member to increase an outer circumference of the tubular member to allow the adapter to facilitate a rapid and secure frictional connection with the sewage disposal site inlet. The flanges are configured to form a stepped configuration so the adapter may securely fit into a variety of disposal site inlet sizes. The ring, typically disposed above the flanges, includes a threaded portion, and is configured to thread onto a predetermined sewage disposal site inlet size to form a substantially leak-free seal.
Owner:CAMCO MFG LLC
High temperature remotely connected / disconnected pipe connector for molten salt reactors
A pipe connector for use in high temperature environments, such as those characteristics of molten salt reactors. The pipe connector can be used in any industry that uses pipe connectors, and in particular, can be used in a molten salt system including a reactor requiring a connection rated for a maximum of about 725° C. and about 15,000 psi. The pipe connector may comprise a pin, a seal ring, a retainer ring, a box, a locking nut, and a retaining nut.
Owner:ABILENE CHRISTIAN UNIV
Fire protection systems and methods using fire protection devices installed in pipe fittings with an internally housed seal member
Fire protection systems and methods having piping interconnections for connecting a fire protection device to a fluid source. The piping interconnections include a branch connector connected to a pipe header. The branch connector includes a tubular member and an internal annular seal member housed in an internal gasket chamber of the tubular member. The tubular member includes an internal stepless surface between a terminal end of the tubular member and the internal gasket chamber.
Owner:MINIMAX VIKING PATENT MANAGEMENT GMBH
Clamp equipped nozzle and quick connectors
A clamp equipped nozzle for enabling spooling of a hose includes a body defining a lumen having a central axis and configured to enable fluid to flow therethrough. A fluid outlet is in fluid communication with the body and is disposed at a first end of the body. The fluid outlet is configured to enable fluid to flow out of the clamp equipped nozzle defining a flow pattern. A coupler is configured to couple the body to an end of the hose and is disposed at a second end of the body. A clamp is configured to retain a section of the hose and is disposed along a longitudinal portion of the body. The clamp includes walls in a cylindrical configuration, the walls defining a longitudinal length that is approximately parallel the body.
Owner:ENDARA RENE RICARDO
Wall-penetrating sealing structure and method for cabinet and pipeline
The invention discloses a through-wall sealing structure and method for a cabinet and a pipeline in the technical field of liquid cooling radiators, and aims to solve the problems of poor sealing performance and high processing precision requirement of the through-wall sealing structure of the pipeline in the prior art. The method has the advantages that the precision requirement for part manufacturing is lowered, the manufacturing cost is reduced, sealing of a gap between the adapter and a cooling liquid pipeline and a gap between a pipe orifice surface and a first step is achieved by replacing a second sealing ring and a third sealing gasket which are different in size or thickness, and the sealing requirement for leakage prevention is met; even if the sealing of the second sealing ring and the third sealing gasket fails, the first sealing gasket based on the flange surface as the support can prevent the cooling liquid from seeping into the cabinet wall. The adapter is connected with the cabinet wall, the flange face serves as a support, and the cooling liquid pipeline is indirectly fixed to the cabinet wall through the flexible extrusion effect of the first sealing gasket, the second sealing ring and the third sealing gasket, so that stress deformation gaps are prevented, and sealing is ensured.
Owner:JIANGSU RUIKONG ELECTRIC TECHNOLOGY CO LTD
Movable joint
The utility model relates to a movable joint, which comprises a nut and a joint, one end of the outer peripheral wall of the joint is provided with external threads, the joint is connected with a pipeline through the external threads, the other end of the outer peripheral wall of the joint is provided with a circle of radial convex block, the radial convex block is inserted into a socket hole arranged on the nut through the joint, and the radial convex block and the inner end face of the socket hole abut against each other and are limited; the inner circumferential wall of the connector is provided with a pulling protruding block used for being matched with a special tool to pull the connector. According to the anti-theft connector, the wrenching protruding block is arranged on the inner circumferential wall of the connector, threaded connection between the connector and a pipeline can be achieved through a special tool, the connector can be prevented from being wrenched by any person, the anti-theft performance is more outstanding after installation, meanwhile, the wrenching protruding block is arranged on the inner circumferential wall of the connector, machining is more convenient, and the anti-theft performance is better. And the material utilization rate is higher.
Owner:NINGBO YONGXIANG COPPER PIPELINE
Oil-well metal pipe
An oil-well metal pipe according to the present disclosure can be fastened with high torque. An oil-well metal pipe (1) according to the present disclosure includes a resin coating (100) on or above at least one of a pin contact surface (400) and a box contact surface (500). The resin coating (100) contains: an epoxy resin: 40.0 to 97.0 mass %; a magnesium silicate hydroxide powder: 3.0 to 50.0 mass %; TiO2: 0 to 10.0 mass %; a wax: 0 to 10.0 mass %; a fluorine-based additive: 0 to 20.0 mass %; and graphite: 0 to 10.0 mass %; and satisfies Formula (1):(CW+CF+CG) / (CMg+CTiO2+CSi)≤0.28(1)where, in Formula (1), a content in mass % of the wax is substituted for CW, a content in mass % of the fluorine-based additive is substituted for CF, a content in mass % of the graphite is substituted for CG, a content in mass % of the magnesium silicate hydroxide powder is substituted for CMg, a content in mass % of the TiO2 is substituted for CTiO2, and a content in mass % of the silane coupling agent is substituted for CSi.
Owner:NIPPON STEEL CORPORATION +1
Concrete-concrete combined beam column plate joint and construction method
The invention provides a concrete-concrete combined beam column plate joint and a construction method, and relates to the technical field of building constructions.The joint comprises a prefabricated column formwork, a prefabricated groove type beam and a slotting type prefabricated plate set, and the prefabricated groove type beam is erected on the side edge of the prefabricated column formwork; the plurality of slotted prefabricated slab groups are erected on the prefabricated channel beam at intervals in the length direction of the prefabricated channel beam; the slotted prefabricated slab group comprises two slotted prefabricated slabs connected to the two sides of the prefabricated channel beam in the length direction, and the notch additional steel bars are placed in slab edge notches of the two opposite slotted prefabricated slabs. A plurality of beam top additional reinforcements are arranged at intervals at the top of the prefabricated trough beam in the length direction; the prefabricated column formwork, the prefabricated groove type beam and the slotting type prefabricated plate set are connected to form a connection whole by pouring concrete; an additional steel bar set is arranged in the joint area and comprises joint stirrups, vertical lap joint steel bars and horizontal lap joint steel bars. The prefabricated part is of a non-rib-out structure, and the stacking and transporting efficiency is improved.
Owner:TSINGHUA UNIVERSITY
High-torsion-resistance sleeve air-tight seal screwed joint structure
The invention belongs to the field of petroleum industry, and discloses a high-torsion-resistance casing air-tight seal screwed joint structure which comprises a male end screwed joint and a female end screwed joint, and the male end screwed joint comprises male end threads, a male end inner sealing face, a male end outer sealing face, a male end inner circular bead and a male end outer circular bead. The female end screwed joint part comprises a female end thread, a female end inner sealing surface, a female end outer sealing surface, a female end inner circular bead and a female end outer circular bead; in the screwing process of the male end threaded connector and the female end threaded connector, the male end outer circular bead and the female end outer circular bead firstly make contact with each other and abut against each other, then bear torque and continue screwing, then the male end inner circular bead and the female end inner circular bead make contact with each other and abut against each other, screwing and screwing are finished, and a special thread form with high connection strength and excellent air-tight sealing capacity is formed. The over-torsion torque can be more than four times that of a common API connector, the connector is not damaged, and the air-tight sealing performance and the connecting performance can still be guaranteed.
Owner:TIANJIN STEEL PIPE MFG CO LTD
Threaded joint
A tubular threaded joint for use in the oil and gas industry is described. The tubular threaded joint includes a first tubular member having a pin and a second tubular member having a box, wherein the pin is an end portion of the first tubular member and comprises on its radially outward-facing surface a male threaded zone comprising a tapered male thread.
Owner:TENARIS CONNECTIONS BV
Sealing valve casting with anti-blocking structure
The invention relates to the technical field of sealing valves, and discloses a sealing valve casting with an anti-blocking structure, an anti-blocking mechanism used for filtering impurities in water flow is detachably mounted in a water inlet mechanism, and limiting mechanisms used for fixing the anti-blocking mechanism left and right are arranged on the two sides of the water inlet mechanism. The two sides of the upper end of the water inlet mechanism are provided with pressing and fixing mechanisms which are used for fixing the anti-blocking mechanism up and down and can slide, the pressing and fixing mechanisms are located above the limiting mechanism, the anti-blocking mechanism can be rapidly disassembled and assembled, water flowing through the interior of the water inlet pipe is filtered through a filter plate, and therefore the water inlet pipe is prevented from being blocked. Through cooperation of the limiting mechanism and the pressing and fixing mechanism, the insertion plate can be fixed in all directions, deformation of the insertion plate caused by water flow impact is prevented, the insertion plate is prevented from being jacked up, the sealing and filtering effects are improved, a blocking disc can be matched with an extension spring to block a guide groove, and the water leakage probability is reduced.
Owner:DAFENG CHAOYUE MASCH MFG CO LTD
Stainless steel bimetallic coupling
A conduit coupling assembly for joining together two metal conduits includes a first fitting having a first end opposite a second end, wherein the first end is threadably attached to the conduit, and a first washer attached to the second end of the first fitting, wherein the first washer is non-metallic. The coupling may further include a second fitting in abutment with the first washer, a nut surrounding the first fitting and the second fitting, and a second washer disposed between the nut and the second fitting, wherein the second washer is non-metallic.
Owner:CALPIPE IND LLC
Tunnel drainage pipe with falling protection structure
The utility model discloses a tunnel drainage pipe with a falling protection structure, which relates to the technical field of tunnel drainage pipes and comprises a pipe body and a protection component, the pipe body is of an integrally formed structure, and the protection component is arranged on the surface of the pipe body. The protection assembly comprises a stainless steel woven mesh, a hard alloy protection layer, an epoxy resin coating, a rubber cushion, a polyurethane protection sleeve and an elastic air bag ring. According to the tunnel drainage pipe with the falling protection structure, the overall structure can be reinforced by the device through the protection assembly, and the drainage pipe is protected through the protection structure during falling; through a clamping mounting groove, a clamping mounting ring, a threaded mounting ring, a threaded connecting groove, a main reinforcing ring, an auxiliary reinforcing ring and a reinforcing bolt, the device can achieve quick connection between drainage pipes through a connecting structure, the connecting sealing performance is high, the water leakage phenomenon is not prone to occurring, and therefore traffic accidents caused by road surface water accumulation are reduced, and the service life of the drainage pipes is prolonged. And the service life of the pavement is effectively prolonged.
Owner:ZHEJIANG JIAOTOU EXPRESSWAY CONSTR MANAGEMENT CO LTD
Hydraulic clamping sleeve with pre-tightening mechanism
ActiveCN222163991UGuaranteed uptimeEasy to installBranching pipesCouplingsStructural engineeringMechanical engineering
The utility model relates to the technical field of connector clamping sleeves, and discloses a hydraulic clamping sleeve with a pre-tightening mechanism, which comprises a hydraulic clamping sleeve, a nut I is fixedly mounted on the outer surface of the hydraulic clamping sleeve, a hydraulic pipe is movably sleeved in the nut I, a fixing groove is formed in the hydraulic clamping sleeve, and a pre-tightening mechanism is arranged in the fixing groove. And a fixing sleeve is movably installed in the fixing groove, a first spring is fixedly installed in the fixing sleeve, a wedge block is fixedly installed at one end of the first spring, and a sliding groove is formed in the outer surface of the first nut. Compared with a traditional hydraulic clamping sleeve, the hydraulic clamping sleeve has the advantages that the hydraulic clamping sleeve is matched with the sliding groove through the wedge block, the first spring and the sliding groove, a hydraulic pipe can be conveniently and rapidly fixed, mounted and dismounted, tight connection between the hydraulic clamping sleeve and the hydraulic pipe is guaranteed, excellent sealing performance is provided for a system, hydraulic leakage is effectively prevented through the strong sealing capacity, and the service life of the hydraulic clamping sleeve is prolonged. And stable operation of a hydraulic system is guaranteed.
Owner:LELIAN (TIANJIN) PRECISION MASCH TECH CO LTD
Anti-rotational pipe coupling
Apparatus and related method for coupling adjacent pipe lengths, for example, a drop pipe assembly that utilize an intermediate coupling member to prevent rotational disengagement of adjacent pipe lengths under the influence of rotational torque. The coupling member can comprise an internal key feature that physically engages a keyed end on at least one end of a length of pipe. The internal key feature can include key members located on each coupling end of the coupling member such that the key members engage corresponding keyed ends of adjacent lengths of pipe such that the coupling member prevents rotation of the adjacent pipe length relative to each other.
Owner:JOHNSON SCREENS INC
Sealing screwed joint
ActiveCN222559423UGuaranteed reliabilityImprove axial tensile strengthScrew threaded jointsCouplingScrew thread
The utility model discloses a sealing threaded connector which comprises a coupling and a pipe body meshed with the coupling, and the pipe body is connected with the coupling through threads. An external thread, an outer sealing surface and an outer shoulder surface are sequentially arranged on the upper surface of the pipe body from the middle part to the end part; an internal thread, an inner sealing surface and an inner shoulder surface are sequentially arranged on the lower surface of the coupling from the end part to the middle part; the external thread is matched with the internal thread, the outer sealing face is matched with the inner sealing face, and the outer circular bead face is matched with the inner circular bead face. The threaded connector has reliable connection strength and sealing performance under the complex working conditions of internal and external pressure, bending load, compression load, tensile load and the like.
Owner:XI'AN PETROLEUM UNIVERSITY
Composite thermal insulation pipeline
Owner:TIANJIN BINLONG GEOTHERMAL ENERGY CO LTD
Anti-freezing petrochemical engineering valve
The invention relates to the technical field of instrument valves, in particular to an anti-freezing petrochemical engineering valve. Connecting flanges are connected to the two ends of the valve body, closed rings are fixed to the two ends in the valve body, guide grooves are formed in the top ends and the bottom ends of the two ends in the valve body, conical pistons are slidably connected to the inner sides of the guide grooves, and the ends, away from each other, of the two conical pistons are slidably connected with the closed rings; a closing mechanism used for driving the conical piston and the closed ring to be separated or sealed is arranged on the inner side of the valve body. According to the anti-freezing petrochemical engineering valve, the closing mechanism is started to drive the conical piston to be in separation and sealing contact with the closed ring in the direction away from or close to each other, then petroleum in the valve body is effectively isolated or circulated, and the isolation and sealing effects of the petroleum are effectively improved through the arrangement of the conical piston and the closed ring; and through the arrangement of the two closed rings and the conical piston, the petroleum leakage condition is effectively prevented, and the practicability of the device is promoted.
Owner:JIANGSU EPICO FLUID EQUIP CO LTD
Device for the detachable connection of a first tubular component and a second tubular component
A device for the detachable connection of a first tubular component and a second tubular component, wherein the first tubular component has a flange-like thickening in an end region facing the second component, wherein a screw nut is provided as the second tubular component which is dimensioned such that the inner opening of the screw nut can be applied over the flange-like thickening onto the first tubular component, wherein two passages located radially next to one another are provided in the outer wall of the screw nut, and wherein a flat, clamp-shaped holding component is provided, having two inner brackets corresponding to the two passages of the screw nut so that the two inner brackets can be pushed into the passages of the screw nut. The screw nut is fastened to the first component in connection with the flange-like thickening of the first component.
Owner:TRUEDYNE SENSORS AG
Breather valve mounted on observation cover of speed reducer of beam-pumping unit
The utility model discloses a breather valve installed on an observation cover of a speed reducer of a beam-pumping unit, and belongs to the field of breather valves. The breather valve installed on the observation cover of the speed reducer of the beam-pumping unit comprises an air inlet pipe, a first thread is arranged on the outer surface of the air inlet pipe, a connecting pipe is arranged on the outer surface of the air inlet pipe, the breather valve further comprises a fixing base, the fixing base is arranged at the lower end of the connecting pipe, a supporting plate is arranged at the lower end of the fixing base, and the supporting plate is connected with the air inlet pipe. A sliding rail is arranged on one side of the supporting plate, a sliding block is arranged in the sliding rail, and a connecting column is arranged on the sliding block. The utility model solves the problem that when the existing breather valve is installed on a device in actual use, if the diameter of the installation position of the breather valve is not equal to the diameter of the connector of the installed device, breather valves with different connection calibers need to be replaced, so that the installation of the breather valve is limited.
Owner:KARAMAY ZHONGSHENG MECHANIC CO LTD
Reducing fastener having flexible sleeves for connecting a coated conduit to a fitting
A fastener for connecting a coated conduit to a fitting or to another coated conduit includes a bushing and polymeric material coating and surrounding an external surface of the bushing. The bushing includes internal and external threading The polymeric material includes a central portion coating at least the first end of the bushing, a first flexible sleeve extending from the central portion in a first direction and creating a cavity, and a second flexible sleeve extending from the central portion in a second direction, opposite the first direction. The external threading of the bushing is configured to be threaded into a fitting or conduit such that the first flexible sleeve fits over a circumference of the fitting or a coated conduit, and the internal threading of the bushing is configured to be threaded onto coated conduit such that the second flexible sleeve fits over a circumference of the coated conduit.
Owner:ROBROY IND -TEXAS LLC
Hydrogen filling connecting device
The utility model discloses a hydrogen filling connecting device, and belongs to the technical field of connecting structures. A hydrogen filling connecting device comprises an output connector rotationally connected with a hydrogen output pipe and an input connector fixedly connected with a hydrogen input pipe, the hydrogen output pipe is rotationally arranged in the output connector, and a screw joint clamping block is arranged on the inner wall of the output connector. A sealing gasket is arranged at the end, close to the hydrogen output pipe, of the input connector, threaded teeth are arranged on the outer wall of the input connector, the central angle corresponding to the threaded teeth ranges from 60 degrees to 180 degrees, the number of the threaded teeth is at least two, and the threaded teeth are evenly distributed on the outer wall of the input connector in the circumferential direction. The output connector is provided with a locking mechanism connected with the input connector in an inserted mode. The sealing device has the advantages of being convenient to operate manually and good in sealing effect.
Owner:PUYANG HUICHENG NEW MATERIALS IND TECH RES INST CO LTD +2
Hydraulic connector with protection function
The utility model relates to the related technical field of hydraulic joints, in particular to a hydraulic joint with a protection function, which comprises a secondary joint, a protection mechanism is arranged in the secondary joint, and a locking mechanism is arranged on the outer side surface of a primary joint. Through the arrangement of a stop block, an abutting block, a first sliding groove, a sliding shell, blocking connectors, a supporting column, a spring, a sealing plug, a son sealing gasket and a mother sealing gasket, when the son connector and the mother connector are in butt joint, the blocking connectors on the two sides can be squeezed, liquid can circulate, the supporting column and the sealing plug can be driven, air in a cavity can be squeezed inwards, the abutting column blocks the connectors, and the sealing effect is improved. At the moment, the sliding shell slides inwards in the first sliding groove, the spring abuts against the block, then the spring is shrunk, liquid can pass through the check block and then flow through the male connector and the female connector, circulation can be conducted, parts cannot be rusted through protection of the sliding shell, and meanwhile the check block cannot block the flow speed of the liquid.
Owner:JIANHU BOAO HYDRAULIC MACHINERY MFG
Leak-proof ferrule joint
The utility model relates to the technical field of pipeline connection, and discloses a leakproof ferrule connector which comprises a connector body, an insertion pipe is fixedly installed on the left side of the connector body, and a nut is installed on the outer side of the left end of the connector body in a threaded mode. And a bottom ring block is fixedly mounted at the left end of the nut. The pipeline penetrates through the nut, then the connector body, the sealing ring and the clamping sleeve are sequentially installed on the pipeline, the nut is rotated to fix the pipeline, then the rotating button is rotated to drive the threaded cylinder to rotate, the threaded cylinder drives the triangular clamping ring to move downwards to extrude the sealing block and the connecting block, and the triangular clamping ring deforms inwards to fix the pipeline. Compared with a traditional clamping sleeve connector, the leakage-proof clamping sleeve connector has the advantages that the triangular clamping ring moves downwards to extrude the connecting block and the sealing block, so that the connecting block and the sealing block are tightened inwards to fix a pipeline, the sealing performance of the clamping sleeve connector is improved, and leakage is prevented.
Owner:LELIAN (TIANJIN) PRECISION MASCH TECH CO LTD
Explosion-proof oil pipe
PendingCN119594251Areduce wearReduce risk of damagePipe elementsRigid pipesMechanical engineeringPetroleum engineering
The anti-explosion oil pipe comprises an oil pipe, one end of the oil pipe is connected with a first pipe connector, and the end, away from the first pipe connector, of the oil pipe is connected with a second pipe connector. And a sleeve sleeves the outer side of the oil pipe and pressurizes the oil pipe. The oil pipe is prone to collision, extrusion or friction in the working process, the sleeve is arranged on the outer side of the oil pipe, oil pipe abrasion can be reduced, the risk of oil pipe damage is reduced, the anti-pressure capacity of the oil pipe is improved, the oil pipe slope fracture risk is reduced, and the oil pipe anti-explosion capacity is improved.
Owner:TAICANG LIANHUI HYDRAULIC PRESSURE EQUIP CO LTD
High torque connection with enhanced break in performance
A tubular member having a first connector provided on a first end thereof, this first connector being adapted to receive a corresponding connector provided on another tubular member, forming a tubular connection comprising: a pin connector, a box connector, an outer diameter, an inner diameter, and a longitudinal axis. The pin connector threads or box connector threads feature a threadform having at least one load flank reduction zone such that when the pin connector is threadably engaged with the box connector, the resulting tubular connection radial bearing strength is desirably reduced. More specifically in the preferred embodiment, the at least one load flank reduction zone is preferably configured such that the tubular connection radial bearing strength is between 100% to 110% of the cross sectional connection strength when the box connector is threadably engaged with a pin connector. A method for forming connectors on a tubular member comprising threads which have at least one load flank reduction zone described herein is also provided.
Owner:VALORA ENG LTD
RV waste management systems
A recreational vehicle waste delivery system with lengths of 3D cylindrical non-flexible tube and of 3D cylindrical flexible-tube, a first-coupler and, a second-coupler. The first coupler, the at least one flexible-tube, the second-coupler and the at least one flexible-tube in combination are able to be removably couplable modularly in series to provide an adjustable, modular waste management system for delivering waste from an rv to an in-ground sewer connection when engaged with a disposal fitting of the rv.
Owner:BENSON JEFFREY
One-way valve with good corrosion-resistant effect
The utility model discloses a one-way valve with good corrosion-resistant effect, which comprises a valve body, a first limit plate is integrally formed in an inner cavity at one end of the valve body, a first sealing ring is detachably connected to one side, facing the inner cavity of the valve body, of the first limit plate, and the valve body, the first limit plate and the first sealing ring are communicated with one another. Compared with the prior art that the adjusting part is in threaded connection with the valve body, the position of the adjusting part in the inner cavity of the valve body can be adjusted by rotating the adjusting part, when the elastic force of the elastic part is weakened, the adjusting part is in threaded connection with the valve body, and the adjusting part is connected with a ball body through an elastic part, and the ball body can seal the through hole of the first sealing ring. The position of the one-way valve body can be adjusted, the one-way valve body can still have good elasticity, the good sealing effect is achieved, the first limiting plate and the first sealing ring are detachably connected and can be replaced, and the good sealing performance of the one-way valve body is guaranteed in cooperation with the ball.
Owner:XIAN DASSAULT AVIATION MECHINERY TECH CO LTD