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Quick coupling of aluminum plastic pipe

An aluminum-plastic pipe, fast technology, applied in the direction of pipes/pipe joints/fittings, pipe connection arrangements, couplings, etc. Ensure the effect of safety, convenient connection and operation, and convenient processing

Inactive Publication Date: 2009-10-14
王德明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the aluminum-plastic pipe is a layered structure, that is, it is composed of an inner plastic layer, an outer plastic layer and an aluminum pipe in the middle layer. The difference in physical properties between the plastic layer and the aluminum pipe will cause them to be loosely bonded. If the end of the aluminum-plastic pipe is in direct contact with the fluid on the fluid pipeline, the fluid will immerse between the plastic layer and the aluminum pipe after a certain period of time, and there will be a certain pressure in the aluminum-plastic pipe joint due to the limitation of the pipe body. The fluid will not break through the outer plastic layer, but on the outside of the aluminum-plastic pipe joint, the fluid can easily break through the outer plastic on the aluminum-plastic pipe, thereby causing the outer plastic of the aluminum-plastic pipe to rupture, resulting in fluid leakage , it needs to be reconnected in time, which increases the operation trouble and poor security

Method used

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  • Quick coupling of aluminum plastic pipe
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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] See figure 1 , the structure of the aluminum-plastic pipe quick joint of the present invention includes a pipe body 1 and a cylindrical joint body 2, wherein the end of the pipe body 1 passes through the joint body 2, and there is formed between the joint body 2 and the pipe body 1 for The cavity 12 at the end of the aluminum-plastic pipe 7 is plugged, and a seal is provided on the outer peripheral surface of the tube body 1 located in the cavity 12. The seal is generally two O-rings 9, which are arranged side by side on the In the circumferential groove provided on the outer peripheral surface of the pipe body 1. The aluminum-plastic pipe 7 has a layered structure, which is composed of an outer layer of plastic 71 , an inner layer of plastic 73 and an aluminum pipe 72 in the middle layer.

[0026] The joint body 2 is made of stainless steel. The material of the pipe body 1 is generally a copper tube. There are conical surfaces 8 that cooperate with each other at the j...

Embodiment 2

[0029] In this embodiment, after the aluminum-plastic pipe 7 and the joint body 2 are connected together, they are not detachable, and the joint of this structure can be applied to occasions buried under walls or floors. Its specific structure also includes a pipe body 1 and a joint body 2. The material of the pipe body 1 is copper, and the material of the joint body 2 is stainless steel. The end of the pipe body 1 extends into the joint body 2, and forms a A cylindrical cavity 12 is used for inserting the end of the aluminum-plastic tube 7 .

[0030]The joint body 2 is fixedly connected to the pipe body 1, and the two adopt a snap-fit ​​connection method, that is, a circumferential groove is provided on the outer peripheral surface of the pipe body 1, and a radially inward oblique groove is provided at the end of the joint body 2. Stretch to the card of cavity 12, the card and connector body 2 are connected as a whole, and card can be a whole piece, also can be several tongue...

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PUM

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Abstract

The invention relates to a quick coupling used for connecting an aluminum plastic pipe, belonging to technical field of couplings on fluid pipelines. The quick coupling comprises a pipe body and a cylindrical coupling body, wherein the end part of the pipe body passes through the coupling body, the coupling body and the pipe body are of split structures, one end of the coupling body is fixedly connected to the outer circumference surface of the pipe body, a hollow cavity which is used for splicing the end part of the aluminum plastic pipe is formed between the pipe body and the coupling body, a blocking device used for preventing the aluminum plastic pipe from being pulled out is arranged in the hollow cavity, and a sealing piece is arranged on the outer circumference surface of the hollow cavity part on the pipe body. The quick coupling has simple connecting operation and low cost and helps to prolong the service life of the aluminum plastic pipe.

Description

technical field [0001] The invention relates to a pipe connecting piece, in particular to a quick joint for realizing quick connection with an aluminum-plastic pipe. Background technique [0002] Existing pipes mainly include PP pipes, galvanized pipes, aluminum-plastic pipes, copper pipes, etc. in terms of their materials. Due to the emphasis on tap water quality, galvanized pipes can no longer meet the water quality requirements, and copper pipes are expensive due to cost reasons. It is also rarely used. PP pipes are inconvenient to connect at the joints and have a short service life, while aluminum-plastic pipes do not have the above-mentioned defects. Therefore, aluminum-plastic pipes are being widely used as a water delivery pipeline. The commonly used aluminum-plastic pipe joints are relatively large in size. They are made of copper materials. The structure includes a joint body and a nut threaded with the joint body. An annular cavity is axially provided at the end o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L47/06F16L37/091
Inventor 王德明
Owner 王德明