CN216618835U

CN216618835U - Anti-frost-crack high-density polyethylene HDPE (high-density polyethylene) pipe for building drainage

Info

Publication number: CN216618835U
Application number: CN202123335897.8U
Authority: CN
Inventors: 杜成龙; 卢伟
Original assignee: Liaoning Qiantai Environmental Technology Co ltd
Current assignee: Liaoning Qiantai Environmental Technology Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-05-27
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses a frost crack prevention high-density polyethylene HDPE (high-density polyethylene) pipe for building drainage, which relates to the technical field of polyethylene drainage pipes and comprises a pipe body, a first inner pipe is fixedly connected to the inner wall surface of the pipe body, a plurality of telescopic bodies are fixedly connected to the inner wall surface of the first inner pipe, the sections of the telescopic bodies are circular, the telescopic bodies are in an annular array by taking the center line of the first inner pipe as the circle center, a second inner pipe is fixedly connected to the inner sides of the telescopic bodies together, the outer wall surface of the pipe body is fixedly connected with a reinforcing layer, the outer side of the reinforcing layer is fixedly connected with a heat-insulating layer, the outer side of the heat-insulating layer is fixedly connected with an outer sleeve, the device can form a cavity with changeable inner diameter through a first inner pipe, a second inner pipe and an expansion body, when water in the cavity freezes and expands, the expansion body is extruded through the ice blocks, so that the expansion force can be prevented from directly acting on the pipe body, and the pipe body is prevented from expanding and cracking.

Description

Anti-frost-crack high-density polyethylene HDPE (high-density polyethylene) pipe for building drainage

Technical Field

The utility model relates to the technical field of polyethylene drain pipes, in particular to a frost crack prevention high-density polyethylene HDPE (high-density polyethylene) pipe for building drainage.

Background

High Density Polyethylene (HDPE) is a high, nonpolar thermoplastic resin of degree of crystallinity, has good heat resistance, cold resistance, resistant environmental stress crack nature and chemical stability, and the HDPE tubular product wide application that utilizes its preparation is in building drainage pipe, like in the utility model patent that publication number is CN205664019U, discloses a high density polyethylene winding reinforcing drain pipe, has a plurality of ring pipes that the centre of a circle was arranged at same axis including the drain pipe, a plurality of ring pipe intervals are arranged, and the interval between two liang carries out the butt fusion in a body structure through filling material. The utility model enhances the chemical corrosion resistance and aging resistance of the drain pipe, has the characteristics of simple connection, safety, reliability, long service life and the like, and the production energy consumption of the high-density polyethylene winding enhanced drain pipe is only 1/4 of traditional metal pipelines such as steel pipes, cast iron pipes, cement prefabricated pipes and the like; the energy consumption when the pipe network moves is also less than traditional pipeline far away, replaces traditional pipeline and has fine energy-conserving effect, however, when the device used in the environment that temperature is lower, the water of pipeline inner wall freezes gradually because of the temperature is lower, along with the expansion of ice-cube easily with the body spalling, consequently, unsatisfied current demand.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides an anti-cracking high-density polyethylene HDPE (high-density polyethylene) pipe for building drainage, which solves the technical problem that the pipe body is easy to crack when the existing device is used in a low-temperature environment.

In order to realize the purpose, the utility model is realized by the following technical scheme: the utility model provides a building drainage is with preventing frostbite and splits high density polyethylene HDPE tubular product, includes the body, body internal face rigid coupling has first inner tube, first inner tube internal face rigid coupling has a plurality of concertina bodies, and is a plurality of the concertina body cross-section is circular, and is a plurality of the concertina body with first inner tube central line is the ring array as the centre of a circle, and is a plurality of the common rigid coupling in the internal side of concertina body has the second inner tube, the outer wall rigid coupling of body has the enhancement layer, enhancement layer outside rigid coupling has the heat preservation, heat preservation outside rigid coupling has the outer tube.

Preferably, the first inner tube, the telescopic body, and the second inner tube are integrally formed.

Preferably, the first inner tube, the telescopic body and the second inner tube are made of rubber materials.

Preferably, the reinforcing layer is a stainless steel grid.

Advantageous effects

The utility model provides an anti-frost-crack high-density polyethylene HDPE (high-density polyethylene) pipe for building drainage, which has the advantages that a cavity with a changeable inner diameter can be formed by arranging a first inner pipe, a second inner pipe and a telescopic body, when water in the cavity freezes and expands, the telescopic body can be prevented from being directly acted on a pipe body by extruding ice blocks, so that expansion crack of the pipe body is prevented, the strength of the pipe body can be further improved by arranging a reinforcing layer, low-temperature transmission can be reduced by arranging a heat-insulating layer, and the heat-insulating layer can be protected by arranging an outer sleeve.

Drawings

FIG. 1 is a cross-sectional view of the present invention.

Fig. 2 is a front view of the present invention.

In the figure: 1. a pipe body; 2. a first inner tube; 3. a telescopic body; 4. a second inner tube; 5. a reinforcing layer; 6. a heat-insulating layer; 7. an outer sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a crack-preventing high-density polyethylene HDPE (high-density polyethylene) pipe for building drainage comprises a pipe body 1, wherein a first inner pipe 2 is fixedly connected to the inner wall surface of the pipe body 1, a plurality of telescopic bodies 3 are fixedly connected to the inner wall surface of the first inner pipe 2, the cross sections of the telescopic bodies 3 are circular, the telescopic bodies 3 are in an annular array by taking the central line of the first inner pipe 2 as the circle center, a second inner pipe 4 is fixedly connected to the inner sides of the telescopic bodies 3 together, a reinforcing layer 5 is fixedly connected to the outer wall surface of the pipe body 1, a heat-insulating layer 6 is fixedly connected to the outer side of the reinforcing layer 5, and an outer sleeve 7 is fixedly connected to the outer side of the heat-insulating layer 6; the first inner tube 2, the telescopic body 3 and the second inner tube 4 are integrally formed; the first inner tube 2, the telescopic body 3 and the second inner tube 4 are made of rubber materials; the reinforcing layer 5 is a stainless steel grid.

Example (b): as can be seen from the attached figures 1-2 of the specification, when the water-cooled expansion pipe is used in a lower-temperature environment, a cavity with a changeable inner diameter can be formed by the first inner pipe 2, the second inner pipe 4 and the expansion body 3, when water in the cavity freezes and expands, the expansion body 3 can be prevented from being directly acted on the pipe body 1 by extruding ice blocks, the pipe body 1 is prevented from expanding and cracking, the strength of the pipe body 1 can be further improved by the reinforcing layer 5, low-temperature transmission can be reduced by the heat-insulating layer 6, and the heat-insulating layer can be protected by the outer sleeve 7.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a building drainage is with preventing frostbite and splits high density polyethylene HDPE tubular product, includes body (1), its characterized in that, body (1) internal face rigid coupling has first inner tube (2), first inner tube (2) internal face rigid coupling has a plurality of telescopic body (3), and is a plurality of telescopic body (3) cross-section is circular, and is a plurality of telescopic body (3) with first inner tube (2) central line is the annular array for the centre of a circle, and is a plurality of telescopic body (3) inboard common rigid coupling has second inner tube (4), body (1) outer wall rigid coupling has enhancement layer (5), enhancement layer (5) outside rigid coupling has heat preservation (6), heat preservation (6) outside rigid coupling has outer tube (7).

2. The anti-frost crack high density polyethylene HDPE (high density polyethylene) pipe for building drainage as claimed in claim 1, characterized in that the first inner pipe (2), the telescopic body (3) and the second inner pipe (4) are integrally formed.

3. The anti-frost-crack high-density polyethylene HDPE (high-density polyethylene) pipe for building drainage as claimed in claim 1, wherein the first inner pipe (2), the telescopic body (3) and the second inner pipe (4) are made of rubber.

4. The anti-frost-crack high-density polyethylene HDPE (high-density polyethylene) pipe for building drainage as claimed in claim 1, wherein the reinforcing layer (5) is a stainless steel grid.