CN217328834U

CN217328834U - Miniature expansion joint

Info

Publication number: CN217328834U
Application number: CN202220237361.8U
Authority: CN
Inventors: 余巍; 唐孟斐
Original assignee: Nanjing Seu Geotechnical Engineering Investigation And Design Research Institute Co ltd
Current assignee: Nanjing Seu Geotechnical Engineering Investigation And Design Research Institute Co ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-08-30
Anticipated expiration: 2032-01-27

Abstract

The utility model discloses a miniature expansion joint relates to water hole and pipe connection shutoff technical field, including the annular spacer that the pipeline kneck cover was overlapped in the water hole, the outside cover of annular spacer has annular gasbag, and the outside cover of annular gasbag has the micro-expansion gasbag, runs through on the micro-expansion gasbag and is equipped with the inflating valve, and the inflating valve that is located the micro-expansion gasbag can be inserted in the annular gasbag. The micro expansion joint can fill the gap between the pipeline and the water hole by inflating and expanding the air bag, thereby improving the water leakage problem at the pipeline interface.

Description

Miniature expansion joint

Technical Field

The utility model relates to a water hole and pipe connection shutoff technical field, concretely relates to miniature expansion joint.

Background

The water pipe made of PVC or steel pipe, originally the interface and water hole interface are carried out the shutoff gap with earth, but such method is very original, and the easy crack that produces of in the in-process seal of using can produce the water leakage phenomenon. Thus, there is a need for a miniature expansion joint.

Disclosure of Invention

In order to solve the problem, the utility model discloses a miniature expansion joint, this joint can realize the improvement of the pipeline kneck problem of leaking.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a miniature expansion joint, includes in the water hole and the pipeline kneck cover has the annular spacer, the outside cover of annular spacer has annular gasbag, the outside cover of annular gasbag has little expanded air bag, it is equipped with the inflating valve to run through on the little expanded air bag, is located inflating valve in the little expanded air bag can insert in the annular gasbag. The annular air bag and the micro-expansion air bag are both prepared by adopting the existing elastic and waterproof materials.

As an improvement of the utility model, the annular positioning plate is screwed on the pipeline joint. The annular positioning sheet is an annular metal sheet.

As an improvement of the utility model, it has the internal thread groove to open on the inboard end wall of annular spacer, the pipeline kneck outside is opened there is the external thread groove, the internal thread groove with the external thread groove meshes each other.

As an improvement of the utility model, the annular gasbag with it has the intercommunicating pore to open between the little expanded air bag, is located inflating valve in the little expanded air bag can run through the intercommunicating pore inserts in the annular gasbag. The size of the communicating hole is smaller than that of the valve nozzle under the normal state, and the valve nozzle can be pressed by force so as to penetrate through the communicating hole to be inserted into the annular air bag.

Compared with the prior art, the utility model has the advantages of as follows: the micro expansion joint can fill the gap between the pipeline and the water hole by inflating and expanding the air bag, thereby improving the water leakage problem at the pipeline interface. The integral material of the micro expansion joint has elasticity, waterproof property and long service life. The miniature expansion joint is small in size, convenient to carry and use, simple in installation method, wide in application range and good in material durability. The micro expansion joint can realize air supply and exhaust of the annular air bag and the micro expansion air bag through a single air valve.

Drawings

Fig. 1 is a schematic view of the overall structure of a micro expansion joint of the present invention;

fig. 2 is a schematic view of the position of the micro expansion joint.

List of reference numerals: 1. an annular positioning sheet; 2. an annular air bag; 3. a micro-inflatable balloon; 4. an air valve.

Detailed Description

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

As shown in fig. 1 and 2, the micro expansion joint comprises an annular positioning plate 1 which is arranged in a water hole and sleeved at a pipeline interface, an annular air bag 2 is sleeved outside the annular positioning plate 1, a micro expansion air bag 3 is sleeved outside the annular air bag 2, an air valve 4 is arranged on the micro expansion air bag 3 in a penetrating mode, and the air valve 4 in the micro expansion air bag 3 can be inserted into the annular air bag 2.

Further, the annular positioning plate 1 is screwed at the pipeline interface.

Further, an inner thread groove is formed in the end wall of the inner side of the annular positioning plate 1, an outer thread groove is formed in the outer portion of the pipeline joint, and the inner thread groove and the outer thread groove are meshed with each other.

Furthermore, a communication hole is formed between the annular air bag 2 and the micro-expansion air bag 3, and an inflating valve 4 positioned in the micro-expansion air bag 3 can penetrate through the communication hole and be inserted into the annular air bag 2.

The working principle is as follows: the miniature expansion joint is screwed at the pipeline joint, the inflating valve is pressed forcibly, the inflating valve in the miniature expansion air bag can penetrate through the communicating hole to be inserted into the annular air bag, the communicating hole is tightly attached to the outer end wall of the inflating valve at the moment, air supply in the annular air bag can be realized through the inflating valve, and the annular air bag is expanded. After the annular air bag expands, if the water leakage phenomenon still exists, the inflating valve is pulled, so that the inflating valve is pulled out from the annular air bag, the inflating valve supplies air, the micro-expansion air bag can be expanded, and a better water hole can be sealed. After the air bag is used, the air valve is pressed, and the air in the annular air bag and the micro-expansion air bag can be discharged.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by combining the above technical features at will. It should be noted that modifications and embellishments may be made by those skilled in the art without departing from the principles of the present invention and are considered within the scope of the invention.

Claims

1. The utility model provides a miniature expansion joint, includes in the water hole and annular spacer (1) that the pipeline kneck cover had, its characterized in that, the outside cover of annular spacer (1) has annular gasbag (2), the outside cover of annular gasbag (2) has micro-expansion gasbag (3), run through on micro-expansion gasbag (3) and be equipped with inflating valve (4), be located inflating valve (4) in the micro-expansion gasbag (3) can insert in the annular gasbag (2).

2. A micro expansion joint according to claim 1, wherein: the annular positioning plate (1) is screwed at the pipeline interface.

3. A micro expansion joint according to claim 2, wherein: the inner side end wall of the annular positioning plate (1) is provided with an inner thread groove, the outside of the pipeline joint is provided with an outer thread groove, and the inner thread groove and the outer thread groove are meshed with each other.

4. A micro expansion joint according to claim 1, wherein: a communicating hole is formed between the annular air bag (2) and the micro-expansion air bag (3), and an inflating valve (4) positioned in the micro-expansion air bag (3) can penetrate through the communicating hole and be inserted into the annular air bag (2).