CN211423652U

CN211423652U - Pipe joint structure

Info

Publication number: CN211423652U
Application number: CN201922222775.4U
Authority: CN
Inventors: 吴东泽; 刘慧建; 王晓真
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-09-04
Anticipated expiration: 2029-12-12

Abstract

The utility model relates to a pipe joint structure, which comprises a pipeline I and a pipeline II and is characterized in that the connecting end of the pipeline I and the pipeline II is respectively provided with a check valve I and a check valve II, the outside of the check valve I is provided with a locking nut, and the outer cylindrical surface of the check valve II is provided with an external thread structure matched with the locking nut; check valve I with the relative setting of check valve II still is provided with the conduction pipe between the two. In the process of screwing the joint, the conduction pipe opens the one-way valve I and the one-way valve II, and the pipeline I is communicated with the pipeline II; in the disassembling process, the locking nut and the external thread structure are loosened, the one-way valve I and the one-way valve II are reset, and the pipeline I and the pipeline II are closed. The utility model discloses simple structure is ingenious, dismantles the in-process at the pipeline, and the pipeline can seal at interface position by oneself, has avoided a large amount of liquid leakage of coupling position, has reduced the waste, has avoided polluting other parts.

Description

Pipe joint structure

Technical Field

The utility model belongs to the technical field of car tube coupling, concretely relates to pipe joint structure.

Background

At present, in the connection of automobile pipelines, the joints of the pipelines have no leakage-proof function in the disassembly process. Therefore, during the disassembly process, the pipe joint position can leak a large amount of liquid, which causes waste and pollutes other parts.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem existing in the prior art, the utility model discloses a pipe joint structure.

In order to solve the technical problem existing in the above, the utility model discloses a following scheme:

a pipe joint structure comprises a pipeline I and a pipeline II, wherein a one-way valve I and a one-way valve II are respectively arranged at the connecting end of the pipeline I and the pipeline II, a locking nut is arranged outside the one-way valve I, and an external thread structure matched with the locking nut is arranged on the outer cylindrical surface of the one-way valve II; check valve I with the relative setting of check valve II still is provided with the conduction pipe between the two.

Further, the check valve I comprises a sleeve I, and a spring I and a steel ball I which are arranged in the sleeve I, wherein an internal thread structure is arranged at one end of the sleeve I and is matched with an external thread structure on the pipeline I; one end of the spring I is abutted against the pipeline I, and the other end of the spring I is matched with the steel ball I; the locking nut is arranged outside the other end of the sleeve I.

Further, be provided with annular boss on the outer cylinder of sleeve I with spacing lock nut, the I other end of sleeve with form annular clearance between the lock nut with II cooperations of check valve.

Further, the check valve II comprises a sleeve II, and a spring II and a steel ball II which are arranged in the sleeve II, wherein an internal thread structure is arranged at one end of the sleeve II and is matched with an external thread structure on the pipeline II; one end of the spring II is abutted against the pipeline II, and the other end of the spring II is matched with the steel ball II; and an external thread structure matched with the locking nut is arranged on the outer cylindrical surface at the other end of the sleeve II.

Furthermore, the inner hole at the other end of the sleeve II is a horn-shaped wide-mouth hole to be matched with the one-way valve I.

Furthermore, the conduction pipe is of a hollow pipe structure, the side walls of two ends of the conduction pipe are respectively provided with a notch structure which is radially communicated, and the middle part of the outer wall of the conduction pipe is also provided with a limiting convex ring.

Furthermore, an internal thread structure is processed at one end of the locking nut, and an annular convex shoulder matched with an annular boss outside the check valve I is arranged on the inner wall of the other end of the locking nut.

In the process of screwing the joint, namely in the process of screwing the locking nut and the external thread structure, the one-way valve I and the one-way valve II are opened by the conduction pipe, and the pipeline I is communicated with the pipeline II; in the disassembling process, the locking nut and the external thread structure are loosened, the one-way valve I and the one-way valve II are reset, the conduction pipe is jacked open by the one-way valve, and the pipeline I and the pipeline II are closed.

The pipe joint structure has the following beneficial effects:

(1) the utility model adopts the butt joint of two one-way valves, and the force is generated through the threaded connection to conduct the one-way valve, so the structure is simple and ingenious; and in the pipeline dismantlement process, because the existence of check valve, the pipeline can seal at the interface position by oneself, has avoided the leakage of a large amount of liquid of coupling position, has reduced the waste, has avoided polluting other parts.

(2) The utility model discloses processing is easy, with low costs, and easily batch production can be arranged in automobile test, matching process, needs occasions such as dismouting pressure sensor in the pipeline, also is fit for the pipeline and needs the occasion of often dismantling or replenishing liquid fast, and the use occasion is extensive, and the practicality is strong.

Drawings

FIG. 1: the structure schematic diagram of the pipe joint structure before assembly in the embodiment of the utility model;

FIG. 2: the utility model discloses the structure sketch map after the pipe joint structure assembles in the embodiment.

Description of reference numerals:

1-pipeline I; 2-one-way valve I; 21-sleeve I; 22-spring I; 23-steel ball I; 3, locking a nut; 4-pipeline II; 5-one-way valve II; 51-sleeve II; 52-spring II; 53-steel ball II; 6-a conduction pipe.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

fig. 1 to fig. 2 show a specific embodiment of a pipe joint structure of the present invention.

As shown in fig. 1 to 2, the pipe joint structure in this embodiment includes a pipeline i 1 and a pipeline ii 4, a one-way valve i 2 and a one-way valve ii 5 are respectively disposed at connection ends of the pipeline i 1 and the pipeline ii 4, a locking nut 3 is disposed outside the one-way valve i 2, and an external thread structure matched with the locking nut 3 is disposed on an external cylindrical surface of the one-way valve ii 5; check valve I2 and II 5 relative settings of check valve and still be provided with conduction pipe 6 between the two. In the process of screwing the joint, namely in the process of screwing the locking nut 3 and the external thread structure, the conduction pipe 6 opens the one-way valve I2 and the one-way valve II 5, and the pipeline I1 is communicated with the pipeline II 4; dismantle the in-process, lock nut 3 and external screw thread structure loosen, and check valve I2 and II 5 of check valve reset, and conduction pipe 6 is backed down by the check valve, and pipeline I1 and II 4 of pipeline are sealed.

Specifically, the check valve I2 comprises a sleeve I21, and a spring I22 and a steel ball I23 which are arranged inside the sleeve I21, wherein an internal thread structure is arranged at one end of the sleeve I21 and is matched with an external thread structure on the pipeline I1; one end of the spring I22 is propped against the pipeline I1, and the other end of the spring I is matched with the steel ball I23; the lock nut 3 is disposed outside the other end of the sleeve i 21 as shown in fig. 1 and 2.

Preferably, an annular boss is arranged on the outer cylindrical surface of the sleeve I21 to limit the locking nut 3, and an annular gap is formed between the other end of the sleeve I21 and the locking nut 3 to be matched with the one-way valve II 5, as shown in fig. 1 and 2.

Specifically, the check valve II 5 comprises a sleeve II 51, and a spring II 52 and a steel ball II 53 which are arranged inside the sleeve II 51, wherein an internal thread structure is arranged at one end of the sleeve II 51 and is matched with an external thread structure on the pipeline II 4; one end of the spring II 52 is propped against the pipeline II 4, and the other end of the spring II is matched with the steel ball II 53; and the outer cylindrical surface at the other end of the sleeve II 51 is provided with an external thread structure matched with the locking nut 3, as shown in figures 1 and 2.

Preferably, the inner hole at the other end of the sleeve II 51 is a wide-mouthed hole in a trumpet shape to match with the check valve I2, as shown in FIGS. 1 and 2.

Preferably, the conduction pipe 6 is a hollow pipe structure, the side walls of the two ends of the conduction pipe 6 are respectively provided with a notch structure which is radially penetrated, and the middle part of the outer wall of the conduction pipe 6 is further provided with a limiting convex ring, as shown in fig. 1 and fig. 2. In this embodiment, two ends of the conduction pipe 6 are respectively in contact fit with the steel balls of the check valve I2 and the check valve II 5.

Preferably, one end of the locking nut 3 is processed with an internal thread structure, and the inner wall of the other end is provided with an annular shoulder which is matched with an annular boss outside the check valve I2, as shown in figures 1 and 2.

In the embodiment, a pipeline I1, a one-way valve I2 and a locking nut 3 are assembled into an assembly; the pipeline II 4 and the one-way valve II 5 are assembled into another assembly, and a conduction pipe 6 is arranged in the middle.

Before the two pipelines are assembled and connected, as shown in figure 1, the two one-way valves are in a closed state under the action of the springs, and liquid in the pipelines cannot leak. If need couple together two pipelines, only need to screw up lock nut 3 and II 5 sleeves II 51 of check valve, at the in-process of screwing up, conduction pipe 6 is under the effect of screw thread tightening power, progressively backs off the steel ball and the spring of the left and right sides, and conduction pipe 6 both ends set up breach and cavity, and liquid circulates through 6 both ends breach and centre of conduction pipe, as shown in fig. 2.

If two pipelines need to be disassembled and parts are replaced, only the locking nut 3 needs to be loosened, and the conduction pipe 6 and the steel balls on the two sides close the pipelines under the action of the spring, so that liquid leakage is avoided.

The utility model adopts the butt joint of two one-way valves, and the force is generated through the threaded connection to conduct the one-way valve, so the structure is simple and ingenious; and in the pipeline dismantlement process, because the existence of check valve, the pipeline can seal at the interface position by oneself, has avoided the leakage of a large amount of liquid of coupling position, has reduced the waste, has avoided polluting other parts.

The utility model discloses processing is easy, with low costs, and easily batch production can be arranged in automobile test, matching process, needs occasions such as dismouting pressure sensor in the pipeline, also is fit for the pipeline and needs the occasion of often dismantling or replenishing liquid fast, and the use occasion is extensive, and the practicality is strong.

The present invention has been described in detail with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various improvements of the method concept and the technical solution of the present invention can be made without modification, or the present invention can be directly applied to other occasions without modification, and is within the protection scope of the present invention.

Claims

1. A pipe joint structure comprises a pipeline I and a pipeline II, and is characterized in that the connecting end of the pipeline I and the pipeline II is respectively provided with a check valve I and a check valve II, a locking nut is arranged outside the check valve I, and an external thread structure matched with the locking nut is arranged on the outer cylindrical surface of the check valve II; check valve I with the relative setting of check valve II still is provided with the conduction pipe between the two.

2. The pipe joint structure according to claim 1, wherein the one-way valve I comprises a sleeve I, and a spring I and a steel ball I which are arranged inside the sleeve I, wherein an internal thread structure is arranged at one end of the sleeve I and is matched with an external thread structure on the pipeline I; one end of the spring I is abutted against the pipeline I, and the other end of the spring I is matched with the steel ball I; the locking nut is arranged outside the other end of the sleeve I.

3. The pipe joint structure according to claim 2, wherein an annular boss is arranged on the outer cylindrical surface of the sleeve I to limit the locking nut, and an annular gap is formed between the other end of the sleeve I and the locking nut to be matched with the one-way valve II.

4. The pipe joint structure according to claim 1, 2 or 3, wherein the one-way valve II comprises a sleeve II, and a spring II and a steel ball II which are arranged inside the sleeve II, and one end of the sleeve II is provided with an internal thread structure matched with an external thread structure on the pipeline II; one end of the spring II is abutted against the pipeline II, and the other end of the spring II is matched with the steel ball II; and an external thread structure matched with the locking nut is arranged on the outer cylindrical surface at the other end of the sleeve II.

5. The pipe joint structure according to claim 4, wherein the inner hole of the other end of the sleeve II is a flared wide-mouth hole to be engaged with the check valve I.

6. The pipe joint structure according to claim 1, 2, 3 or 5, wherein the conduction pipe is a hollow pipe structure, the side walls of the two ends of the conduction pipe are respectively provided with a radial through notch structure, and the middle part of the outer wall of the conduction pipe is further provided with a limiting convex ring.

7. The pipe joint structure according to claim 1, 2, 3 or 5, wherein the locking nut is provided with an internal thread structure at one end and an annular shoulder arranged on the inner wall of the other end to be matched with the annular boss outside the one-way valve I.

8. The pipe joint structure according to claim 6, wherein the locking nut is internally threaded at one end and provided with an annular shoulder at the inner wall at the other end for engaging with an annular boss on the outside of the check valve I.