CN219493445U

CN219493445U - PVC pressure-bearing expansion joint

Info

Publication number: CN219493445U
Application number: CN202320664527.9U
Authority: CN
Inventors: 范卫华; 孙宽; 叶伟东
Original assignee: Linhai Weixing New Building Materials Co Ltd
Current assignee: Linhai Weixing New Building Materials Co Ltd
Priority date: 2023-03-30
Filing date: 2023-03-30
Publication date: 2023-08-08
Anticipated expiration: 2033-03-30

Abstract

The utility model discloses a PVC pressure-bearing expansion joint which comprises an expansion joint main body and a pre-plug, wherein one end of the pre-plug is a pipe bell and spigot, the outer wall of the pre-plug is of a step structure, the other end of the pre-plug is inserted into the expansion joint main body from the upper port of the expansion joint main body, a limiting rod for limiting the insertion depth is arranged at the lower end of the outer wall of the pipe bell and spigot of the pre-plug and the upper port of the expansion joint main body, a limiting ring is arranged on the limiting rod, and a binding belt for limiting is penetrated on the limiting ring. Inserting the pre-plug-in into the telescopic joint main body, limiting the insertion depth by a limiting rod, preventing the insertion from being too deep or too shallow, binding the binding tape by passing through the limiting ring after the insertion is completed, limiting the limiting rod, inserting the pipe into a faucet of the pre-plug-in, and removing the binding tape and the limiting rod after the installation is completed. The utility model realizes the controllability of the insertion depth, is convenient to operate and saves time and labor.

Description

PVC pressure-bearing expansion joint

Technical Field

The utility model belongs to the technical field of expansion joints, and particularly relates to a PVC pressure-bearing expansion joint.

Background

The traditional telescopic joint is generally provided with a groove main body and a sealing ring, a sealing ring end is inserted into a pipe in the using process, a depth space is reserved after the pipe is inserted to ensure the compensation space of heat expansion and cold contraction of a pipeline system, the sealing ring end is easy to insert too deeply or too shallowly on installation due to larger friction resistance, and the depth is adjusted after the pipe is inserted under normal conditions, but the adjustment is time-consuming and labor-consuming due to larger resistance.

As chinese CN206449345U discloses a construction drainage expansion joint structure, which comprises a pipe, an expansion joint main body and a screw compression cover, wherein the pipe is connected with the expansion joint main body in a socket fit manner and is clamped by the screw compression cover, a compression washer and a sealing ring are arranged between the screw compression cover and the expansion joint main body, the pipe is directly inserted into the sealing ring end, and the pipe is easily inserted too deeply or too shallowly in installation.

Disclosure of Invention

In view of the above problems, the present utility model aims to provide a PVC pressure expansion joint.

The specific technical scheme is as follows:

the utility model provides a PVC pressure-bearing expansion joint, includes expansion joint main part and pre-insert, and the one end of pre-insert is tubular product bell and spigot mouth, and the outer wall is step structure, and the other end of pre-insert inserts in the expansion joint main part from the expansion joint main part last port, and the tubular product bell and spigot mouth outer wall lower extreme of pre-insert is equipped with the gag lever post that is used for restricting the depth of insertion with expansion joint main part last port department.

Further, a limit ring is arranged on the limit rod.

Further, wear to have the ribbon that is used for spacing on the spacing collar, the ribbon ties up the gag lever post, reduces its when installing tubular product and takes place the possibility of rotation and shifting.

Further, a sealing ring is arranged between the pre-plug-in unit and the telescopic joint main body, so that sealing between the pre-plug-in unit and the telescopic joint main body is realized.

Further, the pipe is inserted into the pipe bell and spigot of the pre-plug, and is connected with the pipe in a bonding manner, so that the pipe is more convenient to insert.

Inserting the pre-plug-in into the telescopic joint main body, limiting the insertion depth by a limiting rod, preventing the insertion from being too deep or too shallow, binding the binding tape by passing through the limiting ring after the insertion is completed, limiting the limiting rod, inserting the pipe into a faucet of the pre-plug-in, and removing the binding tape and the limiting rod after the installation is completed.

The utility model has the beneficial effects that the controllability of the insertion depth is realized, the operation is convenient, the time and the labor are saved, and the functions of the telescopic energy-saving device can be normally exerted.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

fig. 2 is a cross-sectional view of the present utility model.

In the figure: 1. a telescopic joint body; 2. pre-plug-in; 3. a limit rod; 31. a limit ring; 4. a tie; 5. and (3) sealing rings.

Detailed Description

The utility model will be further described with reference to the drawings, but the scope of the utility model is not limited thereto.

As shown in fig. 1 and 2, a PVC pressure-bearing expansion joint comprises an expansion joint body 1, one end of the expansion joint body 1 is longer in insertion opening, one end of the expansion joint body is shorter in insertion opening, the shorter insertion opening is used for inserting a pipe, a pre-insert 2 is inserted into the longer insertion opening, one end of the pre-insert 2 is a socket with a step structure, the other end of the pre-insert 2 is inserted into the expansion joint body 1, a limiting rod 3 used for limiting the insertion depth is arranged at the lower end of the outer wall of the pipe socket of the pre-insert 2 and at the upper end of the expansion joint body 1, the limiting rod 3 is located at a step, the upper end of the limiting rod 3 can be connected with the step structure of the outer wall of the pre-insert 2, a limiting ring 31 is arranged on the limiting rod 3, a binding belt 4 used for limiting is penetrated on the limiting ring 31, a sealing ring 5 is arranged between the pre-insert 2 and the expansion joint body 1, and the pipe is inserted into the pipe socket of the pre-insert 2 and is bonded and connected with the pipe. Other similar structures, other than the shape of the elongated stop collar 31 in the drawings of the present utility model, can be used to pass through the tie and provide a stop.

Inserting the pre-plug-in 2 into the telescopic joint main body 1, limiting the inserted depth by the limiting rod 3, preventing the insertion from being too deep or too shallow, after the insertion is completed, enabling the binding tape 4 to pass through the limiting ring 31 to be tightly bound, limiting the limiting rod 3, then inserting the pipe into a faucet of the pre-plug-in 2, removing the binding tape 4 and the limiting rod 3 after the installation is completed, and at the moment, enabling the bottom end of the pre-plug-in to have a certain distance with the step structure of the telescopic joint main body 2, so as to ensure the compensation space of heat expansion and cold contraction of a pipeline system.

Claims

1. The utility model provides a PVC pressure-bearing expansion joint, its characterized in that includes expansion joint main part (1) and pre-insert (2), and the one end of pre-insert (2) is tubular product bell and spigot, and the outer wall is step structure, and the other end of pre-insert (2) inserts in expansion joint main part (1) from expansion joint main part (1) upper end mouth, and tubular product bell and spigot outer wall lower extreme and expansion joint main part (1) upper end mouth department of pre-insert (2) are equipped with gag lever post (3) that are used for restricting the depth of insertion.

2. A PVC pressure expansion joint as claimed in claim 1, characterized in that the stop lever (3) is provided with a stop collar (31).

3. A PVC pressure expansion joint according to claim 2, characterized in that the stop collar (31) is provided with a tie (4) for stop.

4. A PVC pressure expansion joint according to claim 1, characterized in that a sealing ring (5) is provided between the pre-insert (2) and the expansion joint body (1).

5. A PVC pressure expansion joint as in claim 1, wherein the pipe socket of the pre-insert (2) is inserted into the pipe and adhesively attached to the pipe.