CN216109361U

CN216109361U - High-density polyethylene corrugated pipe for building

Info

Publication number: CN216109361U
Application number: CN202122038480.9U
Authority: CN
Inventors: 谢纯辉; 陈泽灝; 杨湘刚; 张关贤; 蔡小军
Original assignee: Zhejiang Jiaogong New Material Co ltd
Current assignee: Zhejiang Jiaogong New Material Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-03-22
Anticipated expiration: 2031-08-26

Abstract

The utility model relates to a high-density polyethylene corrugated pipe for buildings, which comprises an outer bell mouth, a corrugated pipe part and an inner bell mouth which are sequentially connected along the length direction, wherein the inner bell mouth comprises an inner bell pipe with a chamfer structure, an outer bell pipe which is rotationally connected to the inner bell pipe through a mechanical sealing assembly and is provided with an external thread, and a sealing ring which is sleeved on the outer bell pipe, one end of the outer bell pipe is outwards bent and is abutted against the chamfer surface of the inner bell pipe, and the outer bell mouth is in threaded connection with the outer bell pipe and is used for forcing the sealing ring to be abutted against the chamfer surface of the outer bell pipe. The outer bell mouth and the inner bell mouth are connected in a threaded connection mode, and the mechanical sealing assembly and the sealing ring are used for enhancing the sealing performance, so that the aim of facilitating installation is fulfilled while the sealing performance is ensured.

Description

High-density polyethylene corrugated pipe for building

Technical Field

The utility model relates to the technical field of corrugated pipes, in particular to a high-density polyethylene corrugated pipe for buildings.

Background

The corrugated pipe is a non-toxic product made of polyethylene and has ring corrugated outer wall and smooth inner wall. The prestressed pipe has excellent performance and relatively economic manufacturing cost, and can be used for prestressed pipe hole forming in bridge construction.

At present, the most common polyethylene corrugated pipe mainly comprises a corrugated pipe body with an annular corrugated outer wall and a socket arranged at the end part of the corrugated pipe body, the existing socket structure has poor adaptability to a sealing ring, during the connection, a lubricant is usually coated on the inner wall of the socket and a socket rubber ring, then the central axes of the socket and the socket are aligned, one constructor holds the connecting part of the pipe, the other constructor uses a wood hammer to knock the pipe to be inserted, and the socket is knocked into the socket bottom slowly to be gradually and sequentially installed. Such a mounting method causes difficulty in mounting and difficulty in ensuring the sealing property at the socket, and is desired to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the prior art and provides a high-density polyethylene corrugated pipe for buildings, which achieves the aim of convenience in installation while ensuring the sealing performance by optimizing the bellmouth structure of the corrugated pipe.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a high density polyethylene bellows for building, includes outer bellmouth, bellows portion and the interior bellmouth that connects in order along length direction, interior bellmouth including have the chamfer structure in hold the pipe, rotate through mechanical seal subassembly connect in hold the pipe in and have the outer pipe of holding of external screw thread and overlap and locate the sealing washer on holding the pipe outward, the one end of holding the pipe outward buckle and contradict in on the chamfer face of holding the pipe in, outer bellmouth threaded connection in hold the pipe outward and go up and force the sealing washer is contradicted in the chamfer face of holding the pipe outward.

By adopting the technical scheme, the mechanical seal assembly is an assembly which is perpendicular to the end faces of the inner socket pipe and the outer socket pipe, keeps fit under the action of fluid pressure and elasticity and the cooperation of auxiliary seal and prevents fluid leakage and is formed by relative sliding, and the mechanical seal assembly realizes relative rotation between the inner socket pipe and the outer socket pipe while ensuring the sealing property between the inner socket pipe and the outer socket pipe so as to facilitate the spiral installation of the outer socket; in addition, the chamfer structure formed by the outer socket and the inner socket which are attached to each other can improve the sealing performance between the outer socket and the inner socket, and is convenient for guiding the sealing ring to be sleeved on the outer socket, so that after the outer socket and the outer socket are in threaded connection, multiple sealing can be formed among the chamfer surfaces of the outer socket, the sealing ring and the outer socket, and the aim of facilitating installation is fulfilled while the sealing performance is ensured.

The utility model is further configured to: mechanical seal subassembly includes lasso, holding ring, adjustable ring, rubber support, spring bracket, pressure spring and rubber circle, the lasso closely inlays to be located between holding ring and the outer pipe and contradict with the terminal surface of holding ring, the tight cover of rubber support is located on interior pipe and the adjustable ring, the spring bracket cover is located on the rubber support and contradict in the lateral wall of rubber support, the rubber circle inlays to be established and is fixed in interior pipe and the outer pipe of holding between, the both ends of pressure spring are fixed in spring bracket and rubber circle respectively and force the adjustable ring is contradicted in the terminal surface of holding ring.

Through adopting above-mentioned technical scheme, after the installation of mechanical seal subassembly is accomplished, rotate between adjustable ring and the holding ring and contradict, under fluid pressure and pressure spring elasticity's effect, between rubber circle and interior bore pipe and outer bore pipe, between spring bracket and the rubber support, between rubber support and the adjustable ring, between adjustable ring and the holding ring, between holding ring and the lasso, can form multiple sealed face between lasso and the outer bore pipe, when guaranteeing the leakproofness between interior bore pipe and the outer bore pipe, realize the relative rotation between the two, so that the spiral installation of outer bellmouth.

The utility model is further configured to: the end face of the ferrule is provided with an arc-shaped convex ring which is abutted against the chamfer face of the inner bearing pipe.

By adopting the technical scheme, the sealing performance can be further improved.

The utility model is further configured to: the inner wall of rubber support is provided with the fender ring, the adjustable ring includes the moving axis and moves the head, the moving axis inlay locate in the rubber support and contradict in the terminal surface of fender ring, move the head transversal personally submit trapezoidal, and contradict in the terminal surface of holding ring.

Through adopting above-mentioned technical scheme, when guaranteeing steady rotation between adjustable ring and the holding ring, can further improve the leakproofness.

The utility model is further configured to: and at least two arc-shaped concave grooves are formed in the inner wall of the rubber support sleeved with the inner bearing pipe.

Through adopting above-mentioned technical scheme, be convenient for the rubber support cover establish install on interior pipe.

The utility model is further configured to: the cross sections of the rubber support and the spring support are both Z-shaped, an annular gap is reserved between sections, close to the inner bearing pipe, of the rubber support and the spring support, and an L-shaped limiting ring is tightly embedded in the annular gap.

Through adopting above-mentioned technical scheme, rubber support and spring bracket are close to the part of adjustable ring and keep conflicting, and the spacing ring can force the rubber support to be close to on the pipe is held to the more inseparable cover of part of holding the pipe in being located to provide the support for spring bracket, can further improve the leakproofness.

The utility model is further configured to: the end part of the rubber support extends outwards and forms a limiting terminal for limiting the separation of the limiting ring.

Through adopting above-mentioned technical scheme, avoid the spacing ring to break away from rubber support easily after the installation.

The utility model is further configured to: the compression springs are compression springs with unequal pitches, and the pitches of the compression springs are gradually increased along the direction close to the rubber ring.

By adopting the technical scheme, after the pressure spring is loaded, when the load reaches a certain degree, the pressure spring is gradually tightened from the small pitch to the large pitch along with the increase of the load, the rigidity is gradually increased, and the mechanical sealing assembly can keep good pre-sealing.

In conclusion, the beneficial technical effects of the utility model are as follows: the outer bellmouth and the inner bellmouth are connected in a threaded connection mode, and the mechanical sealing assembly and the sealing ring are used for reinforcing the sealing performance, so that the aim of facilitating installation is fulfilled while the sealing performance is ensured.

Drawings

Fig. 1 is a schematic structural view of a high density polyethylene corrugated pipe for construction according to the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

In the figure, 1, an outer socket; 2. a bellows portion; 3. an inner bellmouth; 4. an inner bearing pipe; 5. a mechanical seal assembly; 51. a ferrule; 511. a convex ring; 52. a positioning ring; 53. an adjusting ring; 531. a moving shaft; 532. moving the head; 54. a rubber support; 541. a baffle ring; 542. a limit terminal; 543. a groove; 55. a limiting ring; 56. a spring support; 57. a pressure spring; 58. a rubber ring; 59. an annular gap; 6. an outer bearing pipe; 7. and (5) sealing rings.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the utility model clearer and easier to understand, the utility model is further explained in the following with the accompanying drawings and the detailed description.

Referring to fig. 1, the high density polyethylene corrugated pipe for construction disclosed by the present invention comprises an outer socket 1 in a straight pipe shape, a corrugated pipe part 2 and an inner socket 3 in a tapered step shape, which are sequentially connected along a length direction. The inner socket 3 comprises an inner socket pipe 4 with a chamfer structure, an outer socket pipe 6 which is rotatably connected to the inner socket pipe 4 through a mechanical seal assembly 5 and is provided with an external thread, and a seal ring 7 sleeved on the outer socket pipe 6, wherein one end of the outer socket pipe 6 is bent outwards and is abutted against the chamfer surface of the inner socket pipe 4. The outer socket 1 is connected with the outer socket pipe 6 in a threaded mode and forces the sealing ring 7 to abut against the chamfered surface of the outer socket pipe 6.

Referring to fig. 1 and 2, the mechanical seal assembly 5 includes a collar 51, a retaining ring 52, an adjusting ring 53, a rubber mount 54, a retaining ring 55, a spring mount 56, a compression spring 57, and a rubber ring 58. Wherein the compression springs 57 are provided as compression springs with unequal pitches, and the pitches of the compression springs 57 are gradually increased in a direction approaching the rubber ring 58. After the compression spring 57 is loaded, when the load reaches a certain degree, the compression spring is gradually tightened from the small pitch to the large pitch along with the increase of the load, and the rigidity is gradually increased, so that the mechanical sealing assembly 5 can keep good pre-sealing.

The ferrule 51 is tightly embedded between the positioning ring 52 and the outer bearing pipe 6 and is abutted against the end surface of the positioning ring 52, the end surface of the ferrule 51 is provided with an arc convex ring 511, and the convex ring 511 is abutted against the chamfered surface of the inner bearing pipe 4. The inner wall of the rubber bracket 54 is provided with a baffle ring 541, the adjusting ring 53 comprises a moving shaft 531 and a moving head 532, the moving shaft 531 is embedded in the rubber bracket 54 and abuts against the end surface of the baffle ring 541, and the cross section of the moving head 532 is trapezoidal and abuts against the end surface of the positioning ring 52. The rubber ring 58 is embedded and fixed between the inner support tube 4 and the outer support tube 6, and two ends of the pressure spring 57 are respectively fixed on the spring bracket 56 and the rubber ring 58 and force the adjusting ring 53 to abut against the end surface of the positioning ring 52.

The cross sections of the rubber bracket 54 and the spring bracket 56 are both arranged in a Z shape, the rubber bracket 54 is tightly sleeved on the inner support pipe 4 and the adjusting ring 53, and the spring bracket 56 is sleeved on the section of the rubber bracket 54 close to the adjusting ring 53 and abuts against the side wall of the rubber bracket 54. Meanwhile, an annular gap 59 is reserved between the rubber support 54 and the section of the spring support 56 close to the inner socket 4. The cross section of the limit ring 55 is L-shaped and is tightly embedded in the annular gap 59, and the end of the rubber bracket 54 extends outward and forms a limit terminal 542 for limiting the separation of the limit ring 55. In addition, two arc-shaped concave grooves 543 are arranged on the inner wall of the rubber support 54 which is sleeved with the inner bearing pipe 4 for facilitating installation. The rubber bracket 54 and the spring bracket 56 are kept against each other at the portions close to the adjusting ring 53, and the limiting ring 55 can force the portion of the rubber bracket 54 close to the inner bearing pipe 4 to be sleeved on the inner bearing pipe 4 more tightly, provide support for the spring bracket 56 and further improve the sealing performance.

After the mechanical seal assembly 5 is installed, the adjusting ring 53 and the positioning ring 52 are in rotational interference, under the action of fluid pressure and the elasticity of the compression spring 57, multiple sealing surfaces are formed between the rubber ring 58 and the inner socket pipe 4 and the outer socket pipe 6, between the spring support 56 and the rubber support 54, between the rubber support 54 and the adjusting ring 53, between the adjusting ring 53 and the positioning ring 52, between the positioning ring 52 and the ferrule 51, and between the ferrule 51 and the outer socket pipe 6, so that the relative rotation between the inner socket pipe 4 and the outer socket pipe 6 is realized while the sealing performance between the two is ensured, and the spiral installation of the outer socket 1 is facilitated.

The implementation principle of the embodiment is as follows: after the mechanical seal assembly 5 is installed, the adjusting ring 53 and the positioning ring 52 are in rotational interference, under the action of fluid pressure and the elasticity of the compression spring 57, multiple sealing surfaces are formed between the rubber ring 58 and the inner socket pipe 4 and the outer socket pipe 6, between the spring support 56 and the rubber support 54, between the rubber support 54 and the adjusting ring 53, between the adjusting ring 53 and the positioning ring 52, between the positioning ring 52 and the ferrule 51, and between the ferrule 51 and the outer socket pipe 6, so that the relative rotation between the inner socket pipe 4 and the outer socket pipe 6 is realized while the sealing performance between the two is ensured, and the spiral installation of the outer socket 1 is facilitated. In addition, the chamfer structure formed by the joint of the outer socket pipe 6 and the inner socket pipe 4 can improve the sealing performance between the two and is convenient for guiding the sealing ring 7 to be sleeved on the outer socket pipe 6, so that after the outer socket pipe 6 is in threaded connection with the outer socket 1, multiple sealing can be formed among the chamfer surfaces of the outer socket 1, the sealing ring 7 and the outer socket pipe 6, the sealing performance is ensured, and the purpose of convenient installation is achieved.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. A high density polyethylene corrugated pipe for building which is characterized in that: including outer bellmouth (1), bellows portion (2) and interior bellmouth (3) that connect in order along length direction, interior bellmouth (3) including have the chamfer structure in hold tub (4), through mechanical seal subassembly (5) rotate connect in hold tub (4) in and have outer tub (6) of external screw thread and overlap and locate sealing washer (7) on outer tub (6), the one end of outer tub (6) outwards buckle and contradict in on the chamfer face of interior tub (4), outer bellmouth (1) threaded connection in on outer tub (6) and force sealing washer (7) are contradicted in the chamfer face of outer tub (6).

2. The corrugated high-density polyethylene pipe for construction as claimed in claim 1, wherein: the mechanical seal assembly (5) comprises a ferrule (51), a positioning ring (52), an adjusting ring (53), a rubber support (54), a spring support (56), a pressure spring (57) and a rubber ring (58), the ferrule (51) is tightly embedded between the positioning ring (52) and the outer bearing pipe (6) and is abutted against the end surface of the positioning ring (52), the rubber support (54) is tightly sleeved on the inner support pipe (4) and the adjusting ring (53), the spring support (56) is sleeved on the rubber support (54) and props against the side wall of the rubber support (54), the rubber ring (58) is embedded and fixed between the inner bearing pipe (4) and the outer bearing pipe (6), two ends of the pressure spring (57) are respectively fixed on the spring support (56) and the rubber ring (58) and force the adjusting ring (53) to abut against the end surface of the positioning ring (52).

3. The corrugated high-density polyethylene pipe for construction as claimed in claim 2, wherein: the end face of the ferrule (51) is provided with an arc-shaped convex ring (511), and the convex ring (511) is abutted against the chamfer face of the inner bearing pipe (4).

4. The corrugated high-density polyethylene pipe for construction as claimed in claim 2, wherein: the inner wall of rubber support (54) is provided with fender ring (541), adjusting ring (53) are including moving shaft (531) and moving head (532), moving shaft (531) inlay locate in rubber support (54) and contradict in the terminal surface of fender ring (541), move the transversal trapezoidal, conflict of personally submitting of head (532) in the terminal surface of holding ring (52).

5. The corrugated high-density polyethylene pipe for construction as claimed in claim 2, wherein: the inner wall of the rubber support (54) which is sleeved with the inner bearing pipe (4) is provided with at least two arc-shaped concave grooves (543).

6. The corrugated high-density polyethylene pipe for construction according to claim 5, wherein: the cross sections of the rubber support (54) and the spring support (56) are Z-shaped, an annular gap (59) is reserved between sections, close to the inner bearing pipe (4), of the rubber support (54) and the spring support (56), and an L-shaped limiting ring (55) is tightly embedded in the annular gap (59).

7. The corrugated high-density polyethylene pipe for construction according to claim 6, wherein: the end part of the rubber bracket (54) extends outwards and forms a limit terminal (542) for limiting the separation of the limit ring (55).

8. The corrugated high-density polyethylene pipe for construction as claimed in claim 2, wherein: the compression springs (57) are arranged to be compression springs with unequal pitches, and the pitches of the compression springs (57) are gradually increased along the direction close to the rubber ring (58).