CN218063534U

CN218063534U - Backflow-preventing quick joint

Info

Publication number: CN218063534U
Application number: CN202222344412.XU
Authority: CN
Inventors: 唐晓武; 唐凯璇; 沈奔奔
Original assignee: Roland Automatic Control Valve Shanghai Co ltd
Current assignee: Roland Automatic Control Valve Shanghai Co ltd
Priority date: 2022-09-02
Filing date: 2022-09-02
Publication date: 2022-12-16
Anticipated expiration: 2032-09-02

Abstract

The application relates to the technical field of pipeline joints, and discloses a backflow-preventing quick joint which comprises a joint body, wherein quick joints are arranged on two sides of the joint body, and a backflow-preventing assembly is arranged in the joint body; the quick connector comprises a plug-in connector clamped on one side of a connector body, a plurality of clamping jaws are arranged on the outer wall of the plug-in connector, the clamping jaws are arranged in a sliding mode along the radial direction and penetrate through the plug-in connector, a containing groove is formed in the inner wall of the connector body, and a pressure spring is arranged in the connector body; the backflow preventing assembly comprises a limiting seat, a circulation cavity is formed between the limiting seat and the inner wall of the joint body, a guide rod is connected to the limiting seat in a sliding mode, a sealing block is integrally formed at one end, away from the limiting seat, of the guide rod, a butting ring matched with the sealing block in a butting mode is integrally formed on the inner wall of the joint body, a butting spring is sleeved on the guide rod, and the two ends of the butting spring are respectively butted against the two sides, close to the sealing block and the limiting seat, of the sealing block. The liquid backflow prevention device has the effect of reducing the liquid backflow in the pipeline.

Description

Backflow-preventing quick joint

Technical Field

The application relates to the technical field of pipeline joints, in particular to a backflow prevention quick joint.

Background

At present, the pipeline joint is mainly used for connecting pipelines, and the pipelines are quickly connected together through the pipeline joint, so that the convenience of pipeline connection is improved.

When transporting liquid, for example, when pumping water in a well, the water is transported from a position with a low horizontal plane to a position with a high horizontal plane, the water is pumped out by a water pump, the pipeline is connected by a quick joint, so that the pipeline performs a series of work, after the water pump is closed, the water flows backwards under the action of gravity, the water in the pipeline is pumped back to the inside of the well, when the water pump is used next time, the water pump is required to transport the water again, so that the water pump wastes much energy, and the improvement is needed urgently,

SUMMERY OF THE UTILITY MODEL

In order to reduce the thing liquid condition of flowing backwards in the pipeline and take place, this application provides a rapid joint prevents flowing backwards.

The application provides a prevent quick-operation joint that flows backwards adopts following technical scheme:

a backflow-preventing quick connector comprises a connector body, wherein quick connectors for connecting pipelines are arranged on two sides of the connector body, and a backflow-preventing assembly is arranged in the connector body;

the quick connector comprises a plug connector clamped on one side of the connector body, a plurality of clamping jaws are arranged on the outer wall of the plug connector, the clamping jaws are arranged in a sliding mode along the radial direction and penetrate through the plug connector, an accommodating groove used for accommodating the clamping jaws is formed in the inner wall of the connector body, and a pressure spring used for driving the plug connector to be far away from the connector body is arranged in the connector body;

the backflow preventing assembly comprises a limiting seat, a circulation cavity is formed between the limiting seat and the inner wall of the joint body, a guide rod is connected to the limiting seat in a sliding mode, a sealing block is integrally formed at one end, away from the limiting seat, of the guide rod, a butting ring matched with the sealing block in a butting mode is integrally formed on the inner wall of the joint body, a butting spring is sleeved on the guide rod, and the two ends of the butting spring are respectively butted against the two sides, close to the sealing block and the limiting seat, of the sealing block.

By adopting the technical scheme, when the connector is in work, a worker inserts the pipeline into the plug connector, the plug connector slides towards a position far away from the plug main body under the action of the pressure spring, so that the clamping jaw slides out of the accommodating groove, the clamping jaw slides inwards along the radial direction under the abutting of the inner wall of the connector body, the pipeline is held tightly, when the liquid flows in from one side close to the sealing block, the liquid can smoothly flow, and when the liquid flows backwards, the abutting spring drives the sealing block to abut against the abutting ring, so that the liquid is prevented from flowing backwards; by adopting the design, the situation that the liquid flows backwards can be reduced, and the quick connector is matched, so that the convenience and the stability of using the quick connector are improved.

Preferably, a rotating cavity is formed in the connector body, a switch ball is rotatably connected in the rotating cavity, a circulating hole for circulating the liquid is formed in the switch ball along the radial direction, and a rotating rod is arranged on the side wall of the switch ball and penetrates through the connector body.

Through adopting above-mentioned technical scheme, adopt such design can play the effect of control in the flow of commodity circulation, improve the convenience that quick-operation joint used, can also take place to flow backwards through quick-operation joint when the thing liquid, the runner hole hugs closely when rotating the switch ball rotates intracavity wall to reach the effect of switch, and the sealed piece born pressure when having reduced thing liquid and flowing backwards, improve quick-operation joint's life.

Preferably, one side of the rotating cavity, which is far away from the sealing block, is provided with a butting block, and one side of the butting block, which is close to the switch ball, is provided with a sealing groove matched with the switch ball in a butting way.

Through adopting above-mentioned technical scheme, butt piece and seal groove can make the switch ball can seal better, reduce the thing liquid leakage of refluence, improve quick-operation joint and prevent the effect of refluence.

Preferably, the outer diameter of the limiting seat is gradually reduced along the direction away from the sealing block, a limiting ring is integrally formed on the inner wall of the joint body, the limiting seat is inserted into the limiting ring, a limiting sliding ring is integrally formed on one side, close to the sealing block, of the limiting seat, the outer wall of the limiting sliding ring is tightly attached to the inner wall of the joint body, and the sealing block and the inner wall of the limiting sliding ring are arranged in a sliding mode.

Through adopting above-mentioned technical scheme, use spacing sliding ring can make spacing seat can fix more stably, improve stability and the convenience that spacing sliding ring used, can also make simultaneously that sealed piece can slide more smoothly, improve the smoothness nature that sealed piece slided.

Preferably, one side of the limiting seat close to the sealing block is integrally formed into an insertion ring, and the guide rod is inserted into the insertion ring.

Through adopting above-mentioned technical scheme, use the plug ring not only can make the guide bar can slide more smoothly to make sealed piece slide more stably, can also carry on spacingly to supporting the tight spring, avoid supporting the tight spring and take place to remove, improve the sensitivity that supports the sealed piece of tight spring drive and reset.

Preferably, the inner wall of the joint body is integrally formed with a limiting convex ring, and a limiting annular groove for inserting the pipeline is formed between the limiting convex ring and the inner wall of the joint body.

Through adopting above-mentioned technical scheme, use spacing annular on the one hand can reduce the impact of thing liquid to pipeline tip, improve tube coupling's stability, on the other hand can improve the leakproofness between pipeline and the bayonet joint, and the condition that reduces thing liquid and leak takes place, improves tube coupling's convenience.

Preferably, the outer diameter of the limit convex ring is gradually reduced along the direction close to the pipeline.

By adopting the technical scheme, the limiting convex ring with the gradually reduced outer diameter can enable the pipeline to be more firmly abutted in the limiting ring groove, and the sealing performance of the pipeline is improved.

Preferably, the inner diameter of the limiting convex ring is gradually reduced along the direction close to the pipeline.

Through adopting above-mentioned technical scheme, can make the thing liquid flow more smoothly, reduce the thing liquid and connect this internal energy loss, improve the convenience that the commodity circulation was carried in the joint.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the pipeline is tightly held through the matching of the plug-in connector and the clamping jaw, the backflow prevention of the object liquid is realized through the sealing block, the object liquid can smoothly flow when flowing in from one side close to the sealing block, and the abutting spring drives the sealing block to abut against the abutting ring when the object liquid flows backwards, so that the backflow prevention of the object liquid is realized, and the convenience in using the quick connector is improved;

2. the switch is controlled by the switch ball to the joint body, so that the aim of controlling the flow of the liquid can be fulfilled, and when the liquid flows backwards, the damage of the pressure generated when the liquid flows backwards to the sealing block and the abutting ring can be reduced by closing the switch ball, the quick joint can be better sealed, and the backflow prevention effect of the quick joint is improved;

3. the limiting ring groove can reduce impact of liquid on the end of the pipeline and improve the stability of pipeline connection, and can improve the sealing performance between the pipeline and the plug connector, reduce leakage of the liquid and improve convenience of pipeline connection.

Drawings

Fig. 1 is a first cross-sectional view of a backflow prevention quick coupling according to embodiment 1 of the present application.

Fig. 2 is a second cross-sectional view of the backflow prevention quick coupling according to embodiment 1 of the present application.

Fig. 3 is an enlarged schematic view of a portion a in fig. 1.

Fig. 4 is an enlarged schematic view of a portion B in fig. 2.

FIG. 5 is a cross-sectional view of a backflow prevention quick coupling according to embodiment 2 of the present application

Reference numerals: 1. a plug-in connector; 2. a claw; 3. a receiving groove; 4. a pressure spring; 5. a seal ring; 6. the spring is tightly propped; 7. a guide bar; 8. a sealing block; 9. a flow-through hole; 10. a switch ball; 11. a rotation chamber; 12. a butting block; 13. a plug-in ring; 14. a limiting seat; 15. a butting ring; 16. rotating the handle; 17. rotating the rod; 18. a connector body; 19. a flow-through chamber; 20. a fixing ring; 21. a limiting ring; 22. a limiting slip ring; 23. a limit convex ring; 24. and a limiting ring groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses quick-operation joint prevents flowing backwards.

Example 1:

referring to fig. 1 and 2, the backflow preventing quick coupling comprises a coupling body 18, wherein the coupling body 18 is formed by connecting two circular pipe threads in a matched mode, quick couplings used for connecting pipelines are fixedly inserted into two sides of the coupling body 18, and a backflow preventing assembly is arranged in the coupling body 18.

Referring to fig. 1 and 3, quick-operation joint includes joint in the bayonet joint 1 that connects 18 one side of body, bayonet joint 1 is the ring form, it is connected with a plurality of jack catchs 2 to slide on the 1 outer wall of bayonet joint, one side integrated into one piece that jack catch 2 is close to the pipeline has the tooth's socket, jack catch 2 connects and runs through bayonet joint 1 setting along radially sliding, the groove 3 of accomodating that is used for accomodating jack catch 2 is offered to the 18 inner wall of joint body, it is the ring form to accomodate groove 3, it is used for driving bayonet joint 1 to keep away from the pressure spring 4 that connects body 18 to connect the 18 internal fixation of body, it is provided with a plurality of sealing rings 5 to connect the 18 inner wall of body, sealing ring 5 is used for butt pipeline outer wall. By adopting the design, the pipelines can be connected more conveniently, and the convenience of pipeline connection is improved.

Referring to fig. 2 and 4, the backflow preventing component comprises a limiting seat 14, a circulation cavity 19 for providing a liquid flowing channel is formed between the limiting seat 14 and the inner wall of the joint body 18, a guide rod 7 is connected to the limiting seat 14 in a sliding manner, the guide rod 7 is cylindrical, a sealing block 8 is integrally formed at one end, away from the limiting seat 14, of the guide rod 7, the cross section of the sealing block 8 is C-shaped, an abutting ring 15 which is in abutting fit with the sealing block 8 is integrally formed on the inner wall of the joint body 18, a abutting spring 6 is sleeved on the guide rod 7, and the abutting spring 6 abuts against two sides, close to each other, of the sealing block 8 and the limiting seat 14 respectively. Through sealed piece 8 with support tight spring 6 cooperation, can be when the thing liquid flows in by the one side that is close to sealed piece 8, the thing liquid can smoothly flow, when the thing liquid takes place to flow backwards, support tight spring 6 drive sealed piece 8 and support and connect ring 15 tightly to realize the anti-flowing backwards of thing liquid, reduce the thing liquid and take place the circumstances of flowing backwards, improve the convenience and the stability of thing liquid transportation.

Referring to fig. 2 and 4, spacing seat 14 is half circular cone, its external diameter reduces along the direction of keeping away from sealed piece 8 gradually, connect 18 inner wall integrated into one piece of body to have a spacing ring 21, spacing seat 14 is pegged graft in spacing ring 21, spacing seat 14 is close to one side integrated into one piece limited slip ring 22 of sealed piece 8, limited slip ring 22 is half circular, the outer wall of limited slip ring 22 is hugged closely and is connected 18 inner wall, and one side butt that limited slip ring 22 is close to sealed piece 8 is on butt ring 15, sealed piece 8 slides in limited slip ring 22 inner wall and connects. The limit seat 14 is provided with an inserting ring 13 at one side close to the sealing block 8, the inserting ring 13 is in a ring shape, the inserting ring 13 and the joint body 18 are coaxially arranged, and the abutting spring 6 is sleeved on the inserting ring 13. By adopting the design, the limiting seat 14 can be fixed more stably, and the convenience of using the device is improved.

Referring to fig. 2 and 4, a rotation cavity 11 is formed in the joint body 18, a switch ball 10 is rotationally connected in the rotation cavity 11, a circulation hole 9 for circulating a liquid is radially formed in the switch ball 10, the circulation hole 9 is a cylindrical hole, a butt joint block 12 is arranged on one side, away from the seal block 8, of the rotation cavity 11, the butt joint block 12 is circular, a seal groove matched with the switch ball 10 in a butt joint mode is formed in one side, close to the switch ball 10, of the butt joint block 12, and a fixing ring 20 is arranged on one side, close to the seal block 8, of the rotation cavity 11. The switch ball 10 lateral wall is pegged graft and is had dwang 17, and dwang 17 through connection body 18 sets up, and the cover is equipped with a plurality of sealing washers on the dwang 17 outer wall, and the one end that connects body 18 was kept away from to dwang 17 is fixed with rotation handle 16. Thereby realize quick-operation joint's closure through rotating switch ball 10, not only can reach the switch of control thing liquid transportation, can also take place when flowing backwards at the thing liquid, close through switch ball 10 to reduce the pressure that sealed piece 8 received, improved sealed piece 8's life, and improve the leakproofness that the device used.

The implementation principle of the embodiment 1 is as follows: during operation, the staff pegs graft the pipeline in bayonet joint 1, slides bayonet joint 1 to keeping away from joint body 18 under the effect of pressure spring 4 to give and make 2 butt of jack catch in connecting 18 inner walls of body, make 2 pipeline of hugging closely of jack catch, reach the effect of high-speed joint pipeline. When the liquid flows in from the side close to the sealing block 8, the sealing block 8 contracts, the liquid can smoothly flow in the circulating cavity 19, and when the liquid flows backwards, the abutting spring 6 drives the sealing block 8 to abut against the abutting ring 15, so that the backflow prevention of the liquid is realized. By adopting the design, the pipelines are not only connected quickly, but also can be placed through the sealing blocks 8 to cause backflow, so that the convenience of material liquid transportation is improved.

Example 2:

referring to fig. 5, a backflow prevention quick coupling is different from embodiment 1 in that a limiting convex ring 23 is integrally formed on the inner wall of a coupling body 18, the limiting convex ring 23 is in a ring shape, a limiting ring groove 24 for inserting a pipeline is formed between the limiting convex ring 23 and the inner wall of the coupling body 18, the outer diameter of the limiting convex ring 23 is gradually reduced along the direction close to the pipeline, and the inner diameter of the limiting convex ring 23 is gradually reduced along the direction of the old gold pipeline.

The implementation principle of the embodiment 2 is as follows: during operation, insert the pipeline in spacing annular 24, can make the pipeline butt more firm through spacing bulge loop 23 to reduce the direct pipeline that strikes of thing liquid, can also make pipeline and spacing bulge loop 23 directly carry out the butt, improve the leakproofness of tube coupling, improve tube coupling's convenience and stability.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a prevent quick-operation joint that flows backwards which characterized in that: the joint comprises a joint body (18), wherein quick joints for connecting pipelines are arranged on two sides of the joint body (18), and a backflow prevention assembly is arranged in the joint body (18);

the quick connector comprises a plug connector (1) clamped on one side of a connector body (18), a plurality of clamping jaws (2) are arranged on the outer wall of the plug connector (1), the clamping jaws (2) are arranged in a sliding mode along the radial direction and penetrate through the plug connector (1), a containing groove (3) used for containing the clamping jaws (2) is formed in the inner wall of the connector body (18), and a pressure spring (4) used for driving the plug connector (1) to be far away from the connector body (18) is arranged in the connector body (18);

prevent subassembly that flows backwards includes spacing seat (14), spacing seat (14) with connect and form circulation chamber (19) between body (18) inner wall, spacing seat (14) internal slipping is connected with guide bar (7), guide bar (7) are kept away from the one end integrated into one piece of spacing seat (14) has sealed piece (8), connect body (18) inner wall integrated into one piece have with sealed piece (8) butt complex butt ring (15), the cover is equipped with on guide bar (7) and supports tight spring (6), support tight spring (6) both ends butt respectively in sealed piece (8) and spacing seat (14) both sides that are close to each other.

2. The anti-backflow quick connector according to claim 1, characterized in that: connect and seted up rotation chamber (11) in body (18), it is connected with switch ball (10) to rotate chamber (11) internal rotation, switch ball (10) radially offer through hole (9) that are used for circulating thing liquid, switch ball (10) lateral wall is provided with dwang (17), dwang (17) run through connect body (18).

3. The rapid backflow prevention connector as claimed in claim 2, wherein: one side of rotating cavity (11) far away from sealing block (8) is provided with butt joint block (12), butt joint block (12) be close to one side of switch ball (10) seted up with switch ball (10) butt complex seal groove.

4. The rapid backflow prevention connector as claimed in claim 3, wherein: the outer diameter of the limiting seat (14) is gradually reduced along the direction far away from the sealing block (8), a limiting ring (21) is integrally formed on the inner wall of the joint body (18), the limiting seat (14) is inserted into the limiting ring (21), a limiting sliding ring (22) is integrally formed on one side, close to the sealing block (8), of the limiting seat (14), the outer wall of the limiting sliding ring (22) is tightly attached to the inner wall of the joint body (18), and the sealing block (8) and the inner wall of the limiting sliding ring (22) are arranged in a sliding mode.

5. The anti-backflow quick connector according to claim 1, characterized in that: one side of the limiting seat (14) close to the sealing block (8) is integrally formed into an insertion ring (13), and the guide rod (7) is inserted into the insertion ring (13).

6. The anti-backflow quick connector according to claim 5, characterized in that: connect body (18) inner wall integrated into one piece to have spacing bulge loop (23), spacing bulge loop (23) with form between connecting body (18) inner wall and be used for pegging graft spacing annular (24) of pipeline.

7. The anti-backflow quick connector according to claim 6, characterized in that: the outer diameter of the limiting convex ring (23) is gradually reduced along the direction close to the pipeline.

8. The rapid backflow prevention connector as claimed in claim 6, wherein: the inner diameter of the limiting convex ring (23) is gradually reduced along the direction close to the pipeline.