CN212929134U

CN212929134U - PVC-O pipe with socket and spigot built-in rubber ring in sealing connection

Info

Publication number: CN212929134U
Application number: CN202021711325.8U
Authority: CN
Inventors: 刘丽
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2021-04-09
Anticipated expiration: 2030-08-17

Abstract

A socket joint is provided with a PVC-O pipe which is hermetically connected with a built-in rubber ring, the right pipe end of a socket pipe is sequentially extended with an expansion section, a first straight section, an arc section and a second straight section to form a socket, and the central lines of the first straight section and the second straight section are collinear; the left pipe end of the socket pipe sequentially extends an expansion section and a straight section to form a socket; when the spigot pipe is inserted into the socket pipe, the outer surface of the straight section of the spigot pipe is attached to the inner surface of the first straight section of the socket pipe, or the left pipe end of the spigot pipe extends along the straight direction to form the spigot; the sealing rubber ring is pressed between the socket pipe and the spigot pipe; the sealing rubber ring is formed by fixing an inner layer soft rubber and an outer layer hard rubber into a whole through a middle layer bonding layer. The novel rubber ring has the characteristics of long service life, better sealing effect and the like.

Description

PVC-O pipe with socket and spigot built-in rubber ring in sealing connection

Technical Field

The utility model relates to a PVC pipe technical field specifically involves a PVC-O pipe of built-in rubber ring sealing connection of socket joint.

Background

The PVC-O pipe is mainly applied to the fields of water supply pipelines, mine pipelines, trenchless laying and repairing pipelines and the like.

In the prior art, one end of the PVC-O pipe is made into a large plug-in head with a flaring rubber ring groove, the other end of the PVC-O pipe is made into a small head with a groove, the rubber ring is placed into the large-head rubber ring groove on an installation site, and then the small head is inserted and connected, so that the rubber ring is compressed or displaced to leak water due to insufficient soft supporting force during installation, and is repeatedly maintained, thereby increasing the engineering cost. Based on this, a need exists for a PVC-O pipe that can address the watertight spigot-and-socket rubber ring connection.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a PVC-O pipe of built-in rubber ring sealing connection of socket joint that sealing performance is good, long service life.

The purpose of the utility model is realized like this: a socket joint is provided with a PVC-O pipe which is hermetically connected with a built-in rubber ring, the right pipe end of a socket pipe is sequentially extended with an expansion section, a first straight section, an arc section and a second straight section to form a socket, and the central lines of the first straight section and the second straight section are collinear;

the left pipe end of the socket pipe sequentially extends an expansion section and a straight section to form a socket; when the spigot pipe is inserted into the socket pipe, the outer surface of the straight section of the spigot pipe is attached to the inner surface of the first straight section of the socket pipe, or the left pipe end of the spigot pipe extends along the straight direction to form the spigot;

the sealing rubber ring is pressed in a space between the arc-shaped section of the bell mouth pipe and the socket of the socket pipe; the sealing rubber ring is formed by fixing an inner layer soft rubber and an outer layer hard rubber into a whole through a middle layer bonding layer.

The shore hardness of the inner layer soft rubber of the sealing rubber ring is 45-65, and the shore hardness of the outer layer hard rubber is 80-95.

The arc-shaped section of the bellmouth is a semicircular section.

Compared with the prior art, the utility model has the following characteristics and advantages:

1. the sealing ring and the bonding layer which bonds the sealing rubber ring and the annular groove are arranged in the annular groove to firmly bond the rubber ring together, and the rubber ring does not shift and fall off.

2. The socket comprises a socket front end flaring pipe body, and the outer diameter of the socket end flaring pipe body is larger than that of the pipe body, so that socket falling is prevented.

3. Furthermore, the rubber ring consists of a hard rubber part and a soft rubber part, wherein the hard rubber plays a role in fixing the bracket, and the soft rubber plays a role in sealing. The Shore A hardness of the hard glue (supporting and fixing part) is between 80 and 95, and the Shore A hardness of the soft glue (sealing part) is between 45 and 65.

4. The socket part has good sealing performance and the rubber ring has long service life.

Drawings

Figure 1 is a cross-sectional view of the female fitting.

Fig. 2 is an enlarged view of a portion a of fig. 1.

Detailed Description

FIG. 1 shows a socket joint of PVC-O pipe with a built-in rubber ring for sealing connection, wherein the right pipe end of a socket pipe 1 extends to form a socket 3 after an expansion section, a first straight section, an arc section and a second straight section sequentially, and the central lines of the first straight section and the second straight section are collinear;

the left pipe end of the socket pipe 2 extends with an expansion section and a straight section in sequence to form a socket 4; when the socket pipe 2 is inserted into the socket pipe 1, the outer surface of the straight section of the socket pipe 2 is attached to the inner surface of the first straight section of the socket pipe 1, or the left pipe end of the socket pipe extends along the straight direction to form the socket;

the sealing rubber ring 5 is pressed in a space between the arc-shaped section of the bell mouth pipe and the socket of the socket pipe; the sealing rubber ring 5 is formed by fixing an inner layer soft rubber 5b and an outer layer hard rubber 5a into a whole through a middle layer bonding layer 5 c.

All segments of the socket and spigot are of the same thickness (formed by extension).

The Shore hardness of the inner layer soft rubber of the sealing rubber ring 5 is 45-65, and the Shore hardness of the outer layer hard rubber is 80-95.

The arc-shaped section of the socket 3 is a semicircular section.

The PVC-O pipe with the socket and the built-in rubber ring in sealing connection comprises a bell mouth pipe body and an annular groove, wherein the bell mouth pipe body and the annular groove extend out from the pipe body and are sequentially connected, a sealing ring and a bonding layer for bonding the sealing rubber ring and the annular groove are arranged in the annular groove, the socket comprises a socket front end flaring pipe body, the inner diameter of the socket flaring pipe body is the same as the outer diameter of the pipe body, and the outer diameter of the socket flaring pipe body is larger than the outer diameter of the pipe body.

Furthermore, the sealing ring and the bonding layer which is used for bonding the sealing rubber ring and the annular groove are arranged in the annular groove to firmly bond the rubber ring together, so that the rubber ring does not shift and does not fall off.

Further, the socket comprises a socket front end flaring pipe body, and the outer diameter of the socket end flaring pipe body is larger than that of the pipe body, so that the socket is prevented from falling off.

Furthermore, the rubber ring consists of a hard rubber part and a soft rubber part, wherein the hard rubber plays a role in fixing the bracket, and the soft rubber plays a role in sealing. The Shore A hardness of the hard glue (supporting and fixing part) is between 80 and 95, and the Shore A hardness of the soft glue is between 45 and 65.

Claims

1. A socket joint is built internally with the PVC-O tube of the rubber ring sealing connection, characterized by that, the right side pipe end of the bell pipe (1) extends an expansion section, the first straight section, an arc section and the second straight section sequentially and then forms the bell mouth (3), and the midline of the first, second straight section is collinear;

the left pipe end of the socket pipe (2) is sequentially extended with an expansion section and a straight section to form a socket (4); when the socket pipe (2) is inserted into the socket pipe (1), the outer surface of the straight section of the socket pipe (2) is attached to the inner surface of the first straight section of the socket pipe (1), or the left pipe end of the socket pipe extends along the straight direction to form the socket, and when the socket pipe is inserted into the socket pipe, the outer surface of the socket pipe is attached to the inner surfaces of the first straight section and the second straight section of the socket pipe (1);

the sealing rubber ring (5) is pressed in a space between the arc-shaped section of the bell mouth pipe and the socket of the socket pipe; the sealing rubber ring (5) is formed by fixing an inner layer soft rubber and an outer layer hard rubber into a whole through a middle layer bonding layer.

2. The PVC-O pipe with the socket and insert built-in rubber ring in sealing connection according to claim 1, wherein the Shore hardness of the inner layer soft rubber of the sealing rubber ring (5) is 45-65, and the Shore hardness of the outer layer hard rubber is 80-95.

3. The PVC-O pipe with a female built-in rubber gasket sealing connection as claimed in claim 1, characterized in that the arc-shaped section of the bell mouth (3) is a semicircular section.