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Expanding and extruding connection method for mechanical connection of plastic pipes

A plastic pipe, extrusion connection technology, applied in the direction of pipe connection layout, mechanical equipment, sealing surface connection, etc., can solve the problems of difficult to repair, short service life, unreliable mechanical connection method, etc., to achieve convenient connection, sealing reliable results

Inactive Publication Date: 2011-04-27
上海三山信邦科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide an extended extrusion for mechanical connection of plastic pipes in view of the unreliability, difficulty in repair and service life of plastic pipes in the prior art. Press connection method

Method used

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  • Expanding and extruding connection method for mechanical connection of plastic pipes
  • Expanding and extruding connection method for mechanical connection of plastic pipes
  • Expanding and extruding connection method for mechanical connection of plastic pipes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] see figure 1 , an extended extrusion connection method for mechanically connecting plastic pipes, specifically comprising the following steps:

[0032] 1. Use a pipe expander to expand the inner diameter of the connection part 110 of the plastic pipe 100 to 10%-25% by utilizing the tensile ductility of the plastic pipe 100;

[0033] 2. Connect the plastic pipe 100 with a plastic expansion extrusion connector. The plastic expansion extrusion connector includes a plastic connector 200 and a plastic nut 300. The axial center of the plastic connector 200 is provided with a central through hole 210. In the plastic connector 200 A section of external thread 220 is provided on the outer ring surface of the external thread 220, and the outer diameter of the external thread 220 is larger than the outer diameter of the plastic pipe 100; the outer thread 220 is provided with an insertion part 230 inserted into the plastic pipe 100 along the axial direction. For dn10 plastic pipe ...

Embodiment 2

[0036] see figure 2 , This embodiment is the same as Embodiment 1, wherein the convex rib 231 is a sawtooth ring, and the concave ring 232 is a circular groove.

Embodiment 3

[0038] see image 3 , This embodiment is the same as Embodiment 1, wherein the convex rib 231 is a circular ring, and the concave ring 232 is a rectangular groove.

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PUM

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Abstract

The invention relates to an expanding and extruding connection method for mechanical connection of plastic pipes, specifically comprising the following steps of: (1) expanding the inner diameter of each plastic pipe connection part by 10-25 percent by using a pipe expander and utilizing the stretching ductility of the plastic pipes; and (2) connecting the plastic pipes by adopting a plastic expanding and extruding connector comprising a plastic connector and a plastic nut, sleeving the plastic nut on the plastic pipe, inserting an insertion part of the plastic connector to a connection part of the plastic pipes, fastening the plastic nut on an outer thread of the plastic connector, enabling ribbed edges to clamp the inner wall of the connection part of the plastic pipes, and storing an extruded deformation part of the plastic pipeline into a concave ring. The expanding and extruding connection method of the invention is convenient, concise and reliable to connect various plastic pipelines.

Description

technical field [0001] The invention belongs to the technical field of connection of plastic pipes, and in particular relates to the mechanical connection of plastic pipes, which can meet the connection strength and sealing strength of plastic pipes and pipe fittings without sealing rings by using the stretching ductility and extrusion recovery functions of plastic pipes. Expand the extrusion connection method, which also meets the problem of synchronizing the mechanical connection with the 50-year life of the plastic pipe. Background technique [0002] Existing mechanical connection technologies for plastic pipes mainly include two types of connection technologies: "press-type" and "ferrule-type". The common feature of the above two connection technologies is that the outer diameter of the joint between the metal connector and the plastic pipe is smaller than or equal to the inner diameter of the plastic pipe connected to it. [0003] The "press-type" connection is compose...

Claims

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Application Information

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IPC IPC(8): F16L47/16F16L47/12F16L19/02B29C57/06
Inventor 朱利平吕飞虹潘江林
Owner 上海三山信邦科技有限公司
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