CN205331615U - Wound form bellows - Google Patents

Abstract

The utility model discloses a winding corrugated tube, which comprises an outer tube and an inner tube, the inner tube includes an inner tube head, an inner tube neck and an inner tube body, and the outer tube is a flat wall of a hollow tube core A plastic pipe, the outer pipe is spirally wound on the outer wall of the inner pipe body, the contact parts between the outer pipes are melted and connected, and the contact parts of the outer pipe and the inner pipe body are melted and connected. The utility model provides a winding bellows with simple structure, convenient production, good sealing performance, bending resistance, fracture resistance and long service life.

Description

A winding bellows

technical field

The utility model belongs to the technical field of bellows, in particular to a winding bellows.

Background technique

Bellows is a new type of pipe with a ring-shaped outer wall and a smooth inner wall. It was first successfully developed in Germany in the early 1980s. After more than ten years of development and improvement, it has developed from a single variety to a complete product series. It is currently in production The technology and application technology are very mature. Due to its excellent performance and relatively economical cost, it has been greatly promoted and applied in developed countries such as Europe and the United States. In my country, the promotion and application of corrugated pipes are on the rise, and all technical indicators have reached the use standards. They are generally used on pipelines laid in water conservancy systems. Such pipelines are generally laid underground, and the working environment is harsh. The ground pressure is relatively high. Due to the limited pressure resistance and bending resistance of the existing bellows, they often bend and break due to excessive pressure. At the same time, due to the poor sealing of the joints between the bellows, water leakage The phenomenon also occurs from time to time, seriously affecting the service life of the bellows, and thus affecting road traffic safety.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides a winding corrugated pipe with simple structure, convenient production, good sealing performance, bending resistance, fracture resistance and long service life.

In order to realize the purpose of the utility model, the utility model adopts the following technical solutions:

A winding bellows, comprising an outer tube and an inner tube, the inner tube includes an inner tube head, an inner tube neck and an inner tube body, the outer tube is a flat-walled plastic tube with a hollow core, the The outer tube is spirally wound on the outer wall of the inner tube body, the contact parts between the outer tubes are melted and connected, and the contact parts of the outer tube and the inner tube body are melted and connected.

Preferably, transverse reinforcing ribs are provided between the outer tube and the inner tube body.

Preferably, the transverse reinforcing rib is integrally formed with the pipe wall of the inner pipe body.

Preferably, the neck of the inner tube is provided with a metal reinforcing rib, and the metal rib is inside the wall of the neck of the inner tube.

Preferably, the metal reinforcing bars are steel wires.

Preferably, the inner side of the head of the inner pipe is provided with a thread matching the outer pipe, and the outer pipe can be screwed into it when connecting, so that the sealing performance is good and the interface can be prevented from moving.

The beneficial effects of the utility model are: the utility model provides a winding bellows with simple structure, convenient production, good sealing performance, bending resistance, fracture resistance and long service life.

Description of drawings

Fig. 1 is the structural representation of the utility model;

In the figure: 1. outer tube; 2. inner tube; 3. transverse rib; 4. metal rib; 5. thread.

detailed description

The utility model will be further described below in conjunction with the accompanying drawings through specific embodiments.

As shown in Figure 1, a winding bellows includes an outer tube 1 and an inner tube 2, the inner tube 2 includes an inner tube head, an inner tube neck and an inner tube body, and the outer tube 1 is hollow A flat-walled plastic tube with a tube core, the outer tube 1 is spirally wound on the outer wall of the inner tube body, the contact parts between the outer tubes 1 are melted and connected, and the contact parts between the outer tube 1 and the inner tube body Fusion connection, the outer tube 1 and the inner tube body are provided with a transverse rib 3, the transverse rib 3 is integrally formed with the tube wall of the inner tube body, and the neck of the inner tube is provided with a metal reinforcement Rib 4, the metal reinforcing rib 4 is in the pipe wall of the inner pipe neck, the metal reinforcing rib 4 is a steel wire, and the inside of the inner pipe head is provided with a thread 5 matching the outer pipe 1, When connecting, the outer tube 1 can be screwed into it, which has good sealing performance and can prevent the interface from moving.

The above is only a specific embodiment of the utility model, but the structural features of the utility model are not limited thereto, the utility model can be used for similar products, any skilled person in the field of the utility model , the changes or modifications made are all covered by the patent scope of the present utility model.

Claims (6)

1. a wound form corrugated tube, including outer tube and interior pipe, said inner tube includes interior tube head, interior tube neck and interior tube body, it is characterized in that: described outer tube is the planomural plastic tube of hollow tube core, described outer tube is spirally wound on the outer wall of said inner tube body, between described outer tube, contact site is melted connects, and described outer tube is melted with the contact site of said inner tube body to be connected。

2. wound form corrugated tube according to claim 1, it is characterised in that: it is provided with cross reinforcing between described outer tube and said inner tube body。

3. wound form corrugated tube according to claim 2, it is characterised in that: described cross reinforcing is one-body molded with the tube wall of said inner tube body。

4. the wound form corrugated tube according to claim 1 or 3, it is characterised in that: said inner tube cervical region is provided with metal reinforcing, and described metal reinforcing is in the tube wall of said inner tube cervical region。

5. wound form corrugated tube according to claim 4, it is characterised in that: described metal reinforcing is steel wire。

6. wound form corrugated tube according to claim 1, it is characterised in that: said inner tube inner portion is provided with the screw thread matched with described outer tube。