CN216479532U - Quick connector with pressure relief function - Google Patents

Abstract

The utility model discloses a quick-operation joint with pressure release function, including the joint main part and the hasp pressure release subassembly that are connected, movably be equipped with disk seat and case in the joint main part, be equipped with the control cover at joint main part and hasp pressure release subassembly overcoat, this control cover control disk seat axial position switches between hasp pressure release subassembly and case, makes disk seat one end and case mutually sealed cooperation, the other end is the state of leaving mutually with hasp pressure release subassembly, or makes disk seat one end and case leave mutually the state, the other end and hasp pressure release subassembly mutually sealed cooperation. The utility model discloses a quick-operation joint with pressure release function, the axial motion of disk seat in connecting the main part realizes that the inlet end is sealed, the end pressure release of giving vent to anger, and the residual gas pressure in the discharge joint is more convenient quick and safety when extracting the daughter.

Description

Quick connector with pressure relief function

Technical Field

The utility model belongs to the technical field of the pipeline quick-operation joint technique and specifically relates to a quick-operation joint with pressure release function is related to.

Background

A quick joint is a connecting piece for realizing quick connection and disconnection of pipelines and is mainly used for quick installation of gas or liquid pipelines. When ordinary quick-operation joint used in the gas line, when the daughter inserted connects in, need overcome the pressure that the compressed air of pipeline formed to the case, when extracting the daughter, daughter end in the pressure state of pipeline, the hasp sleeve is pulled back and is needed to overcome the fixture block and pushes up the resistance that forms to the sleeve, in the twinkling of an eye that the hasp sleeve is pulled back, the fixture block breaks away from the draw-in groove. The compressed air in the joint pushes the sub-body out quickly, which causes potential safety hazard. In addition, the quick connector with the valve in the prior art is substantially characterized in that a ball valve is additionally arranged on a common quick connector, the quick connector is large in size, long, high in cost, complex in structure, high in manufacturing cost and difficult to popularize and apply, and when the sub-body is inserted, the pressure of fluid in the connector needs to be overcome, so that the connector needs to have larger thrust when being connected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a quick-operation joint with pressure release function, the axial motion of disk seat in connecting the main part realizes that the inlet end is sealed, the end pressure release of giving vent to anger, and the residual gas pressure in the discharge joint is more convenient quick and safety when extracting the daughter.

In order to solve the technical problem, the utility model provides a technical scheme is: the utility model provides a quick-operation joint with pressure release function, including joint main part and the hasp pressure release subassembly that is connected, movably be equipped with disk seat and case in the joint main part, be equipped with the control cover in joint main part and hasp pressure release subassembly overcoat, this control cover control disk seat axial position switches between hasp pressure release subassembly and case, makes disk seat one end and case mutually sealed cooperation, the other end is the state of separating mutually with hasp pressure release subassembly, or makes disk seat one end and case mutually separated state, the other end and hasp pressure release subassembly mutually sealed cooperation.

The utility model adopts the above technical scheme, the disk seat forms the valve with the case, connect the main part, the axial motion of control cover control disk seat in connecting the main part, when the disk seat is close to and crowded valve core of pushing away, the one end and the sealed laminating of case of disk seat, close the valve, the other end and the hasp pressure release subassembly of disk seat form the pressure release state this moment, when the valve is closed with the case cooperation to the disk seat promptly, hasp pressure release subassembly forms the pressure release state with the disk seat, the fluid pressure in the joint can be released through the pressure release, when pulling out the daughter installed on hasp pressure release subassembly, because the atmospheric pressure in the joint is released, the daughter can not popped out, it is safe in utilization; when one end of the valve seat is separated from the valve core, the valve is opened, the other end of the valve seat and the lock catch pressure relief assembly are in a sealed state, and air flow flows from the inside of the connector main body to the lock catch pressure relief assembly and finally enters the sub-body.

And a valve core spring is arranged between the valve core and the inner wall of the joint main body, and a valve sealing ring is arranged between the valve core and the valve seat. When the valve seat is close to and pushes the valve core, the elasticity of the valve core spring is overcome, so that the valve sealing ring on the valve core is attached to the end face of the valve seat to seal.

Further, the control sleeve comprises a lock catch sleeve and a rotating sleeve, the lock catch sleeve is slidably sleeved on the lock catch pressure relief assembly to control the lock catch, and the rotating sleeve is rotatably sleeved on the joint main body to control the axial movement of the valve seat. The locking sleeve is used for being matched with the locking pressure relief assembly and used for locking and loosening a sub-body inserted into the locking pressure relief assembly, and the rotating sleeve can rotate on the joint main body to drive the valve seat to move axially in the joint main body.

Furthermore, a chute part and an axial guide groove are arranged on the joint main body, the control sleeve is connected with the valve seat through a pin shaft, the pin shaft is positioned in the guide groove and the chute of the chute part, and the position of the pin shaft can be respectively positioned in the flat grooves at the closing end and the opening end of the guide groove and at the two corresponding ends of the chute when the control sleeve rotates, so that the valve seat is matched with the valve core and the lock catch pressure relief assembly to be in a closed-valve pressure relief state or an open-valve sealing state. When the rotating sleeve rotates on the joint main body, the pin shaft is driven to move, in the movement, the chute part rotates when the pin shaft moves in the chute part, in the rotation, the pin shaft axially moves in the guide groove of the joint main body, the valve is in a closed state when the pin shaft moves to a valve closing end, and at the moment, the valve seat is separated from the lock catch pressure relief assembly to be in a pressure relief state; the pin shaft is in a valve opening state when moving to the valve opening end, the valve seat is in sealing fit with the lock catch pressure relief assembly at the moment, and the pin shaft is located at the valve closing end and the valve opening end and corresponds to two end flat groove positions of the chute piece respectively.

Furthermore, the lock catch pressure relief assembly comprises a lock catch main body, a pushing sleeve and a pushing spring, wherein the pushing sleeve and the pushing spring are installed in the lock catch main body, and the pushing spring is arranged between the pushing sleeve and the valve seat. The sub-body is locked by the elasticity of the pushing spring, and the pushing spring pushes the pushing sleeve to push the sub-body out in a matched manner when the sub-body is pulled out.

Furthermore, a sealing baffle ring is arranged between the lock catch main body and the pushing sleeve. The sealing baffle ring is used for sealing the sub-body, the pushing sleeve and the lock catch main body when the sub-body is inserted.

Further, the valve seat is in sliding sealing fit with the lock catch main body through a sealing ring. When the valve seat extends into the inner wall of the lock catch main body and is in sealing fit through the sealing ring, the axial position of the valve seat is in an open valve state, air flow is prevented from leaking through the sealing of the valve seat and the lock catch main body, when the valve seat is far away from the lock catch main body and is separated from the lock catch main body, the sealing ring is separated from the inner wall of the lock catch main body, the valve is closed through the matching of the valve seat and the valve core, and air pressure in the joint is leaked through a gap between the valve seat and the lock catch main body.

Further, the valve seat is in sliding sealing fit with the pushing sleeve through a sealing ring. The valve seat and the pushing sleeve are sealed in a sliding mode through the sealing ring, so that the effects of pressure relief when the valve is closed and sealing when the valve is opened are achieved.

Further, the valve seat is in sliding seal fit with the sealing baffle ring through the sealing ring, the sealing baffle ring is provided with a sealing groove, and the sealing ring is arranged in the sealing groove. The sealing ring is arranged in the sealing groove, and through axial movement of the valve seat, the valve seat is sealed and opened when in contact with the sealing retaining ring, and is closed and decompressed when being separated.

Furthermore, the valve seat is in sliding sealing fit with the pushing sleeve through a sealing ring, and the valve seat is provided with a through groove penetrating through the pin shaft. Through sealing ring and the telescopic cooperation that pushes away, realize the sealed and the pressure release that connect, lead to the groove and be used for wearing to establish the round pin axle, it is rotatory to drive the round pin axle through rotatory sleeve, under the cooperation of chute and guide way, realizes the axial motion of disk seat.

Further, the chute member is provided on the joint body or the lock body, and the guide groove is provided on the joint body or the lock body.

Further, the chute spare sets up to 2, and the terminal surface axial extension of hasp main part has the axial evagination, and the chute spare is installed on the axial evagination, and the hasp main part rotates with the joint main part to be connected, and the control sleeve just drives its pivoted hasp sleeve for the cover is located in the hasp main part, and the outer wall of disk seat passes through the inner wall sliding seal cooperation of sealing ring with the hasp main part, and the disk seat outer wall is equipped with the round pin axle, and this round pin axle location is in the direction that connects the main part and the chute of chute spare. The lock catch sleeve drives the lock catch main body to rotate, the lock catch main body drives the valve seat to move by poking the pin shaft through the chute of the chute piece when rotating, the pin shaft is positioned in the guide groove of the joint main body to enable the valve seat to axially move in the joint main body, and the functions of sealing when opening a valve and pressure relief when closing the valve are realized through the sliding fit of the sealing ring and the lock catch main body in the axial movement.

Further, the control sleeve is a lock catch sleeve sleeved on the lock catch main body, the lock catch main body is rotatably connected with the connector main body, the lock catch sleeve is connected with the lock catch main body, a pushing sleeve is fixedly arranged in the lock catch main body, and the pushing sleeve is connected with the valve seat through a pushing inclined pushing surface and a valve seat inclined pushing surface. The axial movement of the valve seat is realized through the matching of the oblique pushing surface of the pushing device and the oblique pushing surface of the valve seat, when the top end of the oblique pushing surface of the valve seat is matched with the top end of the oblique pushing surface of the pushing device, the valve seat is pushed to the valve core to realize valve closing, and when the top end of the oblique pushing surface of the valve seat is matched with the concave part of the oblique pushing surface of the pushing device, the valve seat moves towards the direction of the pushing sleeve to realize valve opening.

Furthermore, a sealing baffle ring is arranged in the lock catch main body, the valve seat is in sealing sliding fit with the sealing baffle ring through the sealing ring, and a valve seat spring is arranged between the valve seat and the joint main body. The sealing baffle ring is matched with the valve seat to realize the purposes of sealing and pressure relief while playing a role of sealing.

Furthermore, the locking sleeve is provided with an axial protrusion, the rotating sleeve is provided with an axial notch, and the axial protrusion corresponds to the axial notch and is in a state that the valve seat and the valve core are sealed and closed. When the axial bulge corresponds to the axial notch, the valve is closed, and the sub-body can be pulled out at the moment, so that the safety usage is well guaranteed.

Further, the locking sleeve is matched with the joint main body in a positioning mode through the axial notch and the axial protrusion. When the axial bulge corresponds to the axial notch, the valve is closed, and the sub-body can be pulled out at the moment, so that the safety usage is well guaranteed.

The utility model discloses still have following beneficial effect: the quick connector is convenient, quick, easy and labor-saving to insert and extract the daughter, and has higher safety use performance because the airflow in the connector is decompressed, and the daughter cannot fly out to hurt people when being extracted; the connector can be used as a valve, when the sub-body is not required to be pulled out, the valve is closed, and the front end of the sub-body is cut off to be connected with an air source at the rear end of the quick connector; the quick connector has different working states to meet different working requirements, when the valve is opened, the valve seat and the valve core are separated, the valve seat and the lock catch main body are in a sealing state, and air flow cannot leak; when the valve is closed, the valve seat is combined and sealed with the valve core, the valve seat and the lock catch main body are in a pressure relief state, and air flow in the joint flows out from the gap, so that the air pressure in the joint is reduced, and the valve is used for conveniently and safely pulling out the sub-body; through the limitation of the chute on the chute part, the guide groove on the joint main body and the valve closing end, the valve seat overcomes the airflow pressure when the valve is closed, the sub-body is prevented from being inserted and pulled out in use, and the use is safer.

Drawings

Fig. 1 is a schematic perspective view of a quick coupling of the present invention;

FIG. 2 is a sectional view of the assembly structure of the quick coupling of the present invention;

fig. 3 is a schematic sectional view of the quick coupling according to the present invention when the valve is opened;

fig. 4 is a schematic sectional view of the quick coupling according to the present invention when the valve is closed to release pressure;

fig. 5 is an exploded view of the quick coupling of the present invention;

FIG. 6 is a sectional view of the rotary sleeve of the quick connector of the present invention showing a partial structure for controlling the axial movement of the valve seat;

fig. 7 is a schematic structural view of the joint main body of the quick joint of the present invention;

FIG. 8 is a sectional view of the lock catch body and the joint body of the quick coupling according to the present invention;

FIG. 9 is a schematic view of the split structure of the first embodiment of the quick connector of the present invention in use;

FIG. 10 is a schematic view of the first embodiment of the quick connector of the present invention showing the cross-sectional structure of the chute member in operative engagement with the connector body;

FIG. 11 is a schematic cross-sectional view of a second embodiment of the quick connector of the present invention;

FIG. 12 is a schematic cross-sectional view of a third embodiment of the quick connector of the present invention;

FIG. 13 is a schematic cross-sectional view of a fourth embodiment of the quick connector of the present invention;

FIG. 14 is a schematic cross-sectional view of a fifth embodiment of the quick connector of the present invention;

fig. 15 is a schematic sectional view of a sixth embodiment of the quick coupling of the present invention;

fig. 16 is a schematic cross-sectional view of a sixth embodiment of the quick coupling of the present invention;

fig. 17 is a schematic view of a lock catch body and a chute member assembly structure of a sixth embodiment of the quick coupling of the present invention;

fig. 18 is a schematic cross-sectional view of a seventh embodiment of the quick coupling of the present invention;

fig. 19 is a schematic sectional view of a seventh embodiment of the quick coupling of the present invention;

fig. 20 is a sectional view of a coupling structure of a latch body and a pushing sleeve of a seventh embodiment of the quick coupling of the present invention;

fig. 21 is a schematic sectional view of a valve seat according to a seventh embodiment of the quick coupling of the present invention.

Description of reference numerals: 10 joint main body, 101 balls, 102 ball grooves, 103 ball holes, 11 valve seats, 111 sealing rings, 112 through grooves, 113 valve seat springs, 114 valve seat inclined push surfaces, 115 valve seat sealing rings, 12 valve cores, 121 valve sealing rings, 13 valve core springs, 14 inclined groove parts, 141 inclined grooves, 142 flat grooves, 15 guide grooves, 151 valve closing ends, 152 valve opening ends, 16 positioning parts, 161 inner protrusions, 162 outer protrusions, 17 positioning blocks, 2a lock catch pressure relief assemblies, 20 lock catch main bodies, 201 lock catch groove holes, 202 elastic rings, 203 lock catches, 204 axial outer protrusions, 21 pushing sleeves, 22 pushing springs, 23 sealing retaining rings, 211 pushing inclined push surfaces, 30 control sleeves, 31 lock catch sleeves, 311 pressing inner protrusions, 312 axial protrusions, 313, 32 rotating sleeves, 321 pin shafts, 322 axial notches, 33 spring, 4 sub bodies and 41 sub body grooves.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 to 8, a quick coupling with a pressure relief function includes a coupling main body 10 and a latch pressure relief assembly 2a connected to each other, a valve seat 11 and a valve core 12 are movably disposed in the coupling main body 10, a control sleeve 30 is sleeved outside the coupling main body 10 and the latch pressure relief assembly 2a, and the control sleeve 30 controls the axial position of the valve seat 11 between the latch pressure relief assembly 2a and the valve core 12 to be switched, so that one end of the valve seat 11 is in sealing fit with the valve core 12, the other end of the valve seat is in a separated state from the latch pressure relief assembly 2a, or one end of the valve seat 11 is in separated state from the valve core 12, and the other end of the valve seat is in sealing fit with the latch pressure relief assembly 2 a.

A valve seat seal 115 is provided on the valve seat 11 to seal against the inner wall of the joint body 10.

A valve core spring 13 is arranged between the valve core 12 and the inner wall of the joint main body 10, and a valve sealing ring 121 is arranged between the valve core 12 and the valve seat 11.

The control sleeve 30 comprises a locking sleeve 31 and a rotating sleeve 32, the locking sleeve 31 is slidably sleeved on the locking pressure relief assembly 2a to control locking, and the rotating sleeve 32 is rotatably sleeved on the joint main body 10 to control axial movement of the valve seat 11.

The joint body 10 is provided with a chute member 14 and an axial guide groove 15, the control sleeve 30 is connected with the valve seat 11 through a pin 321, the pin 321 is positioned in the guide groove 15 and the chute 141 of the chute member 14, the control sleeve 30 can make the position of the pin 321 respectively positioned in the flat grooves 142 at the corresponding two ends of the valve closing end 151 and the valve opening end 152 of the guide groove 15 and the chute 141 when rotating, so that the valve seat 11 is matched with the valve core 12 and the latch pressure relief assembly 2a to be in a valve closing pressure relief state or a valve opening sealing state. The guide groove 15 is L-shaped, one end of which is an open end 152, the other end of which is a closed end 151, the direction between the closed end 151 and the open end 152 is along the axial direction of the joint body 10, and the closed end 151 is the direction in which the end of the guide groove 15 extends in the axial direction of the joint body 10.

The latch pressure relief assembly 2a comprises a latch body 20, an ejector sleeve 21 and an ejector spring 22, wherein the ejector sleeve 21 and the ejector spring 22 are installed in the latch body 20, and the ejector spring 22 is arranged between the ejector sleeve 21 and the valve seat 11. The lock catch main body 20 is provided with a lock catch slot 201, the lock catch 203 is arranged in the lock catch slot 201, and the lock catch 203 is sleeved with an elastic ring 202 which is used for enabling the lock catch 203 to be abutted and buckled in the sub-body groove 41 or enabling the lock catch 203 to reset when the pressing inner protrusion 311 of the lock catch sleeve 31 is not pressed on the lock catch 203 under the action of the elastic ring 202. When the sub-body 4 is inserted, the locking sleeve 31 is moved towards the connector main body 10, after the sub-body 4 is inserted and the locking catch 203 is locked in the sub-body groove 41, the locking sleeve 31 is released, the locking sleeve 31 is reset by the locking spring 33, and the pressing inner protrusion 311 on the inner side of the locking sleeve 31 presses the locking catch 203 to lock the sub-body 4.

A sealing retaining ring 23 is arranged between the lock catch body 20 and the pushing sleeve 21.

The end of the latch body 20 facing the connector body 10 is fitted with a retainer 16. Wherein, the inner wall of the positioning member 16 is provided with an inner protrusion 161, the outer wall is provided with an outer protrusion 162, the end of the locking device main body 20 is provided with a notch to be matched and connected with the inner protrusion 161 on the positioning member 16, and the inner wall of the locking device sleeve 31 is provided with an inner recess 313 to be matched and connected with the outer protrusion 162 on the positioning member 16.

First embodiment

With further reference to fig. 9 and 10, the valve seat 11 is in sliding sealing engagement with the latch body 20 via a sealing ring 111. When the rotating sleeve 32 drives the pin 321 and the valve seat 11 to move, the sealing ring 111 on the valve seat 11 is in sliding sealing fit with the inner wall of the latch main body 20, when the sealing ring 111 is located on the inner wall of the latch main body 20, the valve seat 11 and the latch main body 20 are in a sealing state, at this time, the connector is opened, and the air flow enters the connector main body 10 and flows out of the sub-body 4. When the valve seat 11 moves axially to drive the sealing ring 111 to slide out of the inner wall of the locking main body 20, the valve seat 11 and the valve core 12 are matched to seal the joint, and residual pressure of air flow in the joint can be discharged through a gap between the valve seat 11 and the inner wall of the locking main body 20.

Second embodiment

As further shown in fig. 11, the valve seat 11 and the ejector sleeve 21 are in sliding sealing engagement by a sealing ring 111. In this embodiment, the center of the pushing sleeve 21 is provided with a pushing member to abut against the end of the valve element 12 inserted into the valve seat 11, so as to limit the axial position of the valve element 12, so that when the valve seat 11 is separated from the valve element 12 to open the joint, the axial position of the valve element 12 is fixed, and the pressure of the air flow is overcome, so that the air flow does not push the valve element 12 to approach the valve seat 11 to affect the gas delivery. The outer wall of the valve seat 11 is matched with the inner wall of the pushing sleeve 21 through the sealing ring 111, when the joint is opened, the valve seat 11 is sealed with the pushing sleeve 21, and when the joint is closed, the gap between the valve seat 11 and the pushing sleeve 21 can be used for discharging residual airflow pressure in the joint, so that the sub-body 4 can be conveniently pulled out.

Third embodiment

Referring further to fig. 12, the valve seat 11 is in sliding sealing engagement with the seal retainer ring 23 via a seal ring 111, the seal retainer ring 23 is provided with a seal groove 100, and the seal ring 111 is provided in the seal groove 100. In this embodiment, the sealing ring 23 is disposed between the inner wall of the locking device body 20 and the pushing sleeve 21, and plays a certain sealing effect when the sub-body 4 is inserted. The sealing ring 23 is provided with a sealing groove 100 and a sealing ring 111 which are in sliding fit with the inner wall of the valve seat 11, and when the valve seat 11 is close to the valve core 12 to seal and close the joint, the sealing ring 111 is separated from the inner wall of the valve seat 11 to release pressure, so that the pressure of residual gas in the joint is released. When the valve seat 11 is separated from the valve core 12 to open the joint, the sealing ring 111 is attached to the inner wall of the valve seat 11 to seal, and gas leakage is avoided.

Fourth and fifth embodiments

As further shown in fig. 13 and 14, the valve seat 11 is in sliding sealing fit with the ejector sleeve 21 through a sealing ring 111, and the valve seat 11 is provided with a through slot 112 passing through the pin 321.

The chute member 14 is provided on the joint body 10 or the locker body 20, and the guide groove 15 is provided on the joint body 10 or the locker body 20. As shown in fig. 13, the chute member 14 is disposed on the joint main body 10, the guide groove 15 is disposed in the joint main body 10, wherein a positioning block 17 is disposed on the joint main body 10, a locking spring 33 is disposed between the positioning block 17 and the locking sleeve 31, and the chute member 14 is sleeved on the outer wall of the joint main body 10. The end of the connector main body 10 is provided with an external thread, the end of the lock catch main body 20 is provided with an internal thread, the connector main body 10 is in threaded connection with the lock catch main body 20, at the moment, the end face of the connector main body 10 is lower than the lock catch main body 20, the positioning block 17 is arranged on the connector main body 10, the lock catch spring 33 is used for pushing the lock catch sleeve 31 to enable the lock catch spring 33 to be compressed and release the lock block sleeve 33, one end of the lock catch spring 33 abuts against the positioning block 17, and the other end of the lock catch spring provides elastic force to reset the lock catch sleeve 31.

As shown in fig. 14, the chute member 14 is provided on the locker body 20, and the guide groove 15 is provided in the locker body 20. The pin shaft 321 is disposed in the through slot 112, and the end portion of the pin shaft is positioned in the chute 141 and the guide slot 15 of the chute member 14, when the rotating sleeve 32 is driven to rotate, the rotating sleeve drives the valve seat 11 to move axially through the cooperation of the chute 141 and the guide slot 15, so as to achieve the effects of sealing and closing the joint, releasing pressure, and opening the joint seal to prevent leakage.

In the above embodiment, the locking sleeve 31 is provided with the axial protrusion 312, the rotating sleeve 32 is provided with the axial notch 322, and the axial protrusion 312 corresponds to the axial notch 322 to form a sealed closed state between the valve seat 11 and the valve core 12.

The utility model discloses when concrete implementation, insert daughter 4 in the hasp main part 20, daughter 4's recess jack-up hasp 203 continues to insert toward hasp main part 20 is inside, when daughter 4's recess corresponds with hasp 203, resets hasp 203 through elastic ring 202 and detains the locking daughter in daughter 4's recess. The sub-body 4 abuts against the ejector sleeve 21. When the valve is opened, the rotating sleeve 32 is screwed to drive the pin shaft 321 to move in the inclined groove 141 and the guide groove 15, the valve seat 11 is driven to move axially, the valve seat 11 is close to or far away from the valve core 12, and the other end of the valve seat 11 is matched with the lock catch main body 20 or the pushing sleeve 21 or the sealing retaining ring 23 to form a pressure relief and sealing state.

The axial protrusion 312 of the locking sleeve 31 and the axial notch 322 of the rotating sleeve 32 are maintained in a corresponding relationship, and defined as a joint closed state when the axial protrusion 312 and the axial notch 322 correspond, and the locking sleeve 31 can slide toward the rotating sleeve 32, and during the sliding, the pressing inner protrusion 311 of the locking sleeve 31 is far away from the locking buckle, so that the sub-body 4 can be pulled out from the locking buckle main body 20. When the axial protrusion 312 corresponds to the axial notch 322, the locking sleeve 31 cannot slide towards the direction of the rotating sleeve 31, the axial protrusion 312 abuts against the end face of the rotating sleeve 322, and at this time, the position of the locking sleeve 31 enables the compression inner protrusion 311 to be kept at the top of the locking buckle 203, so that the sub-body 4 is kept locked, the sub-body 4 cannot be pulled out when the joint is not closed, and the locking device has high safety and practicability.

Sixth embodiment

As further shown in fig. 15, 16 and 17, the chute member 14 is provided as 2 pieces, an axial protrusion 204 extends axially from an end surface of the latch body 20, the chute member 14 is mounted on the axial protrusion 204, the latch body 20 is rotatably connected to the connector body 10, the control sleeve 30 is a latch sleeve 31 that is sleeved on the latch body 20 and drives the latch body 20 to rotate, an outer wall of the valve seat 11 is in sliding sealing fit with an inner wall of the latch body 20 through a sealing ring 111, and an outer wall of the valve seat 11 is provided with a pin 321, wherein the pin 321 is positioned in the guide groove 15 of the connector body 10 and the chute 141 of the chute member 14.

In this embodiment, the locking sleeve 31 drives the connecting ring 35 to rotate, the connecting ring 35 drives the joint body 10 to rotate, and then the inner wall connecting pin 321 of the joint body 10 is connected to control the axial movement of the valve seat 11 through the matching of the inclined groove 141 and the guide groove 15, so as to realize the function of opening and closing the joint, when the joint is closed, the residual pressure in the joint is relieved, and the sub-body 4 is conveniently and safely pulled out.

Seventh embodiment

Referring to fig. 18 to 21, the control sleeve 30 is a locking sleeve 31 covering the locking main body 20, the locking main body 20 is rotatably connected to the joint main body 10, the locking sleeve 31 is connected to the locking main body 20, a pushing sleeve 21 is fixedly disposed in the locking main body 20, and the pushing sleeve 21 is connected to the valve seat 11 through a pushing inclined pushing surface 211 and a valve seat inclined pushing surface 114.

The lock catch main body 20 is internally provided with a sealing baffle ring 23, the valve seat 11 is in sealing sliding fit with the sealing baffle ring 23 through a sealing ring 111, and a valve seat spring 113 is arranged between the valve seat 11 and the joint main body 10.

In this embodiment, a seal retaining ring 23 is disposed in the latch body 20, a seal groove 100 is disposed on an outer wall of the seal retaining ring 23, a seal ring 111 disposed in the seal groove 100 is in sealing sliding fit with an inner wall of the valve seat 11, and a valve seat spring 113 is disposed between the valve seat 11 and an inner wall of the joint body 10.

In the sixth and seventh embodiments, the locking sleeve 31 is in positioning fit with the joint main body 10 through the axial notch 322 and the axial protrusion 312. The rotational connection between the joint body 10 and the locker body 20 is achieved by a ball 101, a ball groove 102 and a ball hole 103, the ball 101 is disposed in the ball hole 103 by providing the ball hole 103 on the joint body 10, the ball groove 102 is provided on the locker body 20, and the locker body 20 is rotatable relative to the joint body 10 by the ball 101 when connected.

In summary, the present invention has been made to practical samples according to the description and the drawings, and after a plurality of use tests, the utility model can be proved to achieve the expected purpose, and the practical value is undoubted. The above-mentioned embodiments are only used to conveniently illustrate the present invention, and are not to the limit of the present invention in any form, and any person who knows commonly in the technical field has, if not in the scope of the technical features of the present invention, utilize the present invention to make the equivalent embodiment of local change or modification, and not to break away from the technical features of the present invention, and all still belong to the technical features of the present invention.

Claims (16)

1. A quick-operation joint with pressure release function, is including the joint main part (10) and hasp pressure release subassembly (2a) that are connected, its characterized in that: the joint is characterized in that a valve seat (11) and a valve core (12) are movably arranged in the joint main body (10), a control sleeve (30) is sleeved outside the joint main body (10) and the lock catch pressure relief assembly (2a), the control sleeve (30) controls the valve seat (11) to be switched between the lock catch pressure relief assembly (2a) and the valve core (12) in the axial direction, one end of the valve seat (11) is in sealing fit with the valve core (12), the other end of the valve seat is in a separated state from the lock catch pressure relief assembly (2a), or one end of the valve seat (11) is in a separated state from the valve core (12), and the other end of the valve seat is in sealing fit with the lock catch pressure relief assembly (2 a).

2. The quick connector with pressure relief function according to claim 1, characterized in that: a valve core spring (13) is arranged between the valve core (12) and the inner wall of the joint main body (10), and a valve sealing ring (121) is arranged between the valve core (12) and the valve seat (11).

3. The quick connector with pressure relief function according to claim 1, characterized in that: the control sleeve (30) comprises a lock catch sleeve (31) and a rotating sleeve (32), the lock catch sleeve (31) is slidably sleeved on the lock catch pressure relief assembly (2a) to control lock catches, and the rotating sleeve (32) is rotatably sleeved on the joint main body (10) to control axial movement of the valve seat (11).

4. The quick connector with pressure relief function according to claim 3, characterized in that: the joint is characterized in that a chute piece (14) and an axial guide groove (15) are arranged on the joint main body (10), the control sleeve (30) is connected with the valve seat (11) through a pin shaft (321), the pin shaft (321) is positioned in the guide groove (15) and a chute (141) of the chute piece (14), and the control sleeve (30) can enable the position of the pin shaft (321) to be respectively positioned in a closed valve end (151) and an open valve end (152) of the guide groove (15) and a flat groove (142) at two corresponding ends of the chute (141) when rotating, so that the valve seat (11) is matched with the valve core (12) and the lock catch pressure relief assembly (2a) to be in a closed valve pressure relief state or an open valve sealing state.

5. The quick connector with pressure relief function according to claim 4, characterized in that: the lock catch pressure relief assembly (2a) comprises a lock catch main body (20), a pushing sleeve (21) and a pushing spring (22), the pushing sleeve (21) and the pushing spring (22) are installed in the lock catch main body (20), and the pushing spring (22) is arranged between the pushing sleeve (21) and the valve seat (11).

6. The quick connector with pressure relief function according to claim 5, characterized in that: a sealing retaining ring (23) is arranged between the lock catch main body (20) and the pushing sleeve (21).

7. The quick connector with pressure relief function according to claim 5, characterized in that: the valve seat (11) is in sliding sealing fit with the lock catch main body (20) through a sealing ring (111).

8. The quick connector with pressure relief function according to claim 5, characterized in that: the valve seat (11) is in sliding sealing fit with the pushing sleeve (21) through a sealing ring (111).

9. The quick connector with pressure relief function according to claim 6, characterized in that: the valve seat (11) and the sealing baffle ring (23) are in sliding sealing fit through the sealing ring (111), the sealing baffle ring (23) is provided with a sealing groove (100), and the sealing ring (111) is arranged in the sealing groove (100).

10. The quick connector with pressure relief function according to claim 6, characterized in that: the valve seat (11) is in sliding sealing fit with the pushing sleeve (21) through a sealing ring (111), and the valve seat (11) is provided with a through groove (112) penetrating through the pin shaft (321).

11. The quick connector with pressure relief function according to claim 10, characterized in that: the inclined groove piece (14) is arranged on the joint main body (10) or the lock catch main body (20), and the guide groove (15) is arranged on the joint main body (10) or the lock catch main body (20).

12. The quick connector with pressure relief function according to claim 5, characterized in that: the utility model discloses a lock catch, including the inclined groove part (14), the terminal surface axial extension of hasp main part (20) has axial evagination (204), and inclined groove part (14) are installed on axial evagination (204), hasp main part (20) with connect main part (10) to rotate and be connected, control sleeve (30) just drive its pivoted hasp sleeve (31) for the cover is located on hasp main part (20), and the inner wall sliding seal cooperation of sealing ring (111) and hasp main part (20) is passed through to the outer wall of disk seat (11), and disk seat (11) outer wall is equipped with round pin axle (321), and this round pin axle (321) location is in guide way (15) that connect main part (10) and inclined groove (141) of inclined groove part (14).

13. The quick connector with pressure relief function according to claim 2, characterized in that: the control sleeve (30) is a lock catch sleeve (31) sleeved on the lock catch main body (20), the lock catch main body (20) is rotatably connected with the connector main body (10), the lock catch sleeve (31) is connected with the lock catch main body (20), a pushing sleeve (21) is fixedly arranged in the lock catch main body (20), and the pushing sleeve (21) is connected with the valve seat (11) through a pushing inclined pushing surface (211) and a valve seat inclined pushing surface (114).

14. The quick connector with pressure relief function according to claim 13, characterized in that: be equipped with in hasp main part (20) and seal and keep off ring (23), sealed sliding fit through sealing ring (111) between disk seat (11) and sealed fender ring (23), disk seat (11) and joint main part (10) are equipped with disk seat spring (113) within a definite time.

15. The quick coupler with pressure relief function according to any one of claims 3 to 11, wherein: the locking sleeve (31) is provided with an axial protrusion (312), the rotating sleeve (32) is provided with an axial notch (322), and the axial protrusion (312) and the axial notch (322) are in a sealed closing state when corresponding to each other, namely the valve seat (11) and the valve core (12).

16. The quick coupler with pressure relief function according to any one of claims 12 to 14, wherein: the locking sleeve (31) is matched with the joint main body (10) in a positioning mode through the axial notch (322) and the axial protrusion (312).

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