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Plastic pipe electrofusion connector with mesh structure electric heating element and preparation method thereof

A technology of electric heating elements and plastic pipes, which is applied in the direction of pipe connection layout, pipe elements, siphon pipes, etc., can solve the problems of mismatching size of connectors and pipes, easy short circuit, high temperature, etc., to avoid unstable quality, avoid circuit breakage, reduce The effect of surface load power

Active Publication Date: 2015-12-16
NINGBO HENGYUAN PRECISION VALVES TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems in the prior art that the connection temperature is too high and it is easy to short circuit caused by the axial wiring, and the size of the connecting piece and the pipe does not match and the problem is easy to open the circuit. The present invention provides a plastic pipe electric heating element with a mesh structure. A fusion connector, the electrofusion connector has a built-in cylindrical electric heating element, and the cylindrical electric heating element is composed of resistive material strips with a mesh structure arranged at equal intervals along the inner wall of the electrofusion connector and connected with the electrofusion Plastic strips of the same material

Method used

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  • Plastic pipe electrofusion connector with mesh structure electric heating element and preparation method thereof
  • Plastic pipe electrofusion connector with mesh structure electric heating element and preparation method thereof
  • Plastic pipe electrofusion connector with mesh structure electric heating element and preparation method thereof

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Effect test

Embodiment 1

[0057] Prepare the electrofusion connector of the plastic pipe whose specification is straight through Dn200, select the brand in Table 1 as GH140, the thickness is 1mm, the alloy resistance sheet material with a resistivity of 1.04, this material contains 20% chromium (Cr), 0.35% aluminum (Al), and the rest are iron (Fe) and rhenium (Re), and the specific implementation process is as follows:

[0058] 1. According to the specification of the connector of Dn200, cut the above material into a strip material with a width of 48mm according to the required width of the welding strip;

[0059] 2. Continuously punch 5x5mm prismatic holes on the belt with the stamping process of feeding the punching die, the width of the side ribs constituting each mesh is 2mm, and the obtained hole mesh belt is pressed according to the electric fusion connector. The inner diameter perimeter minus 5mm die blanking, the inner diameter perimeter length of the Dn200 electrofusion connector is 631.5-5=62...

Embodiment 2

[0065] Prepare the electrofusion connector of the plastic pipe whose specifications are straight through Dn630, select the grade in Table 1 to be Cr15Ni60, the resistivity is 1.1, and the thickness is an alloy resistance sheet of 1.5mm. This material contains 15% chromium (Cr), and the rest is rhenium ( Re), the specific implementation process is as follows:

[0066] 1. Cut the material specified above into strips of resistance material with a width of 140mm;

[0067] 2. Then punch a hole in the middle of the resistance material strip, the average distance between any non-adjacent vertices in each hole is 8mm, and the width of the side ribs constituting each mesh is 2mm. The melting surface of the plastic pipe electrofusion connector with the mesh structure electric heating element and the plastic pipe is twice the area of ​​the pipe wall in the cross section of the Dn630 plastic pipe. The mesh structure is formed by arranging rhombus meshes of the same shape side by side alo...

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Abstract

The invention discloses a plastic pipeline electric smelting connecting piece of an electric heating element with a mesh structure and a preparing method of the connecting piece. The drum-shaped electric heating element is arranged in the connecting piece. The connecting piece is formed by resistance material strips and plastic strips with the same materials, and the resistance material strips and the plastic strips are arranged at equal space distance along the inner wall of the electric smelting connecting piece and are arrayed in a continuous n shape along the drum wall. The preparing method of the connecting piece comprises the following steps that 1) the resistance material strips of the mesh structure are prepared; 2) the surfaces of the resistance material strips of the mesh structure prepared in the step 1) are fixedly connected with the plastic strips with the same materials, the strips are rolled to form the drum-shaped electric heating element; 3) the drum-shaped electric heating element prepared in the step 2) is inserted into an injection mould, and injection moulding is carried out according to a conventional injection moulding technology to obtain a finished product. The electric heating element structure of the connecting piece is stable, according to the preparing method, conventional mechanical equipment is used, multi-specification pipeline connecting pieces can be prepared, a technology platform is provided for manufacturing an electric smelting connecting piece with the extra-large aperture, the welding temperature of the connecting piece can be kept at the needed temperature, and short circuits and disconnection are avoided.

Description

technical field [0001] The invention relates to an electrofusion connector and a preparation method thereof. Specifically, the invention relates to a plastic pipe electrofusion connector with a mesh structure electric heating element and a preparation method thereof. Background technique [0002] With the popularization of plastic pipes, the connection problems caused by the defects of plastic pipe connectors have become more and more prominent, which has always been the main factor restricting pipeline construction. The connection methods of plastic pipes are divided into two types according to the main categories. The first is glue bonding, such as pipes made of PVC, PA, ABS and other materials, and the second is hot-melt connection, such as PE, PP, PE-RT Pipes made of other materials. The hot-melt connection can be divided into the following three methods: hot-melt butt joint, socket hot-melt connection, and electric fusion connection. Among them, the electric fusion con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L47/03F16L47/32F16L43/00B29C45/14B29C65/08
CPCB29C66/5221B29C65/342B29C65/3448B29C65/3468B29C65/348B29C66/1122B29C66/5229B29C66/71
Inventor 孙志强邵信元
Owner NINGBO HENGYUAN PRECISION VALVES TECH
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