HDPE hollow wall composite reinforced winding pipe and its preparation method

A composite reinforced and wound pipe technology, which is applied to pipes, rigid pipes, mechanical equipment, etc., can solve the problems of easy deformation of pipes, pipe collapse, and poor ring flexibility, so as to avoid serious decrease in ring stiffness and improve ring stiffness and ring flexibility , The effect of improving the safety of use

Active Publication Date: 2019-12-20
ZIBO JINYANGDA PLASTIC CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It aims to solve the problems of low ring rigidity and poor ring flexibility of pipelines in the prior art; the expansion coefficient of plastic and steel is different, and the pipeline is easy to deform; steel is easy to corrode, leading to pipeline collapse and other problems

Method used

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  • HDPE hollow wall composite reinforced winding pipe and its preparation method
  • HDPE hollow wall composite reinforced winding pipe and its preparation method
  • HDPE hollow wall composite reinforced winding pipe and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] like figure 1 As shown, according to an embodiment of the HDPE hollow wall composite reinforced winding pipe 1 of the present invention, it includes a hollow pipe wall 2 and a reinforced skeleton 3, and the reinforced skeleton 3 is arranged in the hollow pipe wall 2; the hollow pipe The outer wall 21 of the wall 2 is provided with a through hole 22, the top 31 of the reinforced skeleton 3 is flush with the outer wall 21, and there is a gap 4 between the top 31 of the reinforced skeleton 3 and the outer walls 21 on both sides; the hollow tube The wall 2 is made of HDPE material, and the reinforcing skeleton 3 is made of PVC material; the outer surface of the hollow pipe wall 2 is thermally covered with a HDPE material layer 5; multiple hollow pipe walls are vertically connected by HDPE hot melt material 6 .

[0066] like Figure 2-5 As shown, the shape of the reinforced skeleton is varied. The reinforcing frame 3 includes a horizontal bracket 32 ​​and an oblique bracke...

Embodiment 2

[0080] According to another embodiment of the HDPE hollow-wall composite reinforced winding pipe of the present invention, its structure, positional relationship between the components, beneficial effects, etc. are the same as those of Embodiment 1, the difference is:

[0081] The thickness of HDPE hollow pipe wall h=2mm;

[0082] The thickness of PVC skeleton H=4h=8mm;

[0083] The angle α between the horizontal support and the inclined support in the PVC skeleton is α=30°;

[0084] The gap C=0.8H=6.4mm between the horizontal support and the outer walls on both sides of the through hole in the hollow pipe wall;

[0085] The thickness of the heat-coated HDPE material layer on the outer surface of the HDPE hollow pipe wall is A, 2mm﹤A﹤8mm and A=2.5h=5mm.

Embodiment 3

[0087] According to another embodiment of the HDPE hollow-wall composite reinforced winding pipe of the present invention, its structure, positional relationship between the components, beneficial effects, etc. are the same as those of Embodiment 1, the difference is:

[0088] The thickness of HDPE hollow pipe wall h=1.7mm;

[0089] The thickness of PVC skeleton H=3.8h=6.46mm;

[0090] The angle α between the horizontal bracket and the inclined bracket in the PVC skeleton is α=40°;

[0091] The gap C=0.5H=3.23mm between the horizontal support and the outer walls on both sides of the through hole in the hollow pipe wall;

[0092] The thickness of the heat-coated HDPE material layer on the outer surface of the HDPE hollow pipe wall is A, 1.7mm﹤A﹤6.46mm and A=2.2h=3.74mm.

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Abstract

The invention relates to a HDPE hollow wall composite reinforced winding pipe, which comprises a hollow pipe wall and a reinforced skeleton, the reinforced skeleton is arranged in the hollow pipe wall, through holes are arranged on the outer wall of the hollow pipe wall, the top of the reinforced skeleton is flush with the outer wall, and the reinforced skeleton There is a gap between the top of the pipe and the outer walls on both sides; the hollow pipe wall is made of HDPE material, the reinforced skeleton is made of PVC material, and the outer surface of the hollow pipe wall is thermally covered with a layer of HDPE material. The invention also relates to a preparation method of a composite reinforced winding pipe, comprising the following steps: using an extruder to produce a PVC reinforced skeleton, extruding through twin-screws, shaping, cooling, and winding into rolls for use; using an extruder to produce HDPE hollow The strip is extruded by a single screw, shaped, cooled, and wound into a coil for use; the HDPE hollow strip and the PVC reinforced skeleton are wound and compounded on a molding machine, and a layer of HDPE material is hot-coated on the outer surface to form a composite reinforced winding pipe. The composite reinforced wound pipe has high ring stiffness and ring flexibility at the same time.

Description

technical field [0001] The invention belongs to the technical field of municipal engineering, and in particular relates to an HDPE hollow-wall composite reinforced winding pipe and a preparation method thereof. The winding pipe is compounded by HDPE and PVC. Background technique [0002] In municipal engineering infrastructure, the pipes used in underground facilities such as drainage and sewage are mostly pure HDPE (high-density polyethylene) wall pipes, but the ring stiffness of pure HDPE wall pipes is low, the unit meter is heavy, and the production efficiency is low. In addition, the pure HDPE structural wall pipe has low strength, poor ring flexibility, delamination, and is very prone to disengagement of the structural wall connection. [0003] In order to improve the above phenomenon, some composite pipes have appeared. The pipe wall of this type of pipe is made of composite winding of plastic and steel. The steel will be corroded slowly during service, which will ser...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L9/128B29C48/09B29C48/025B29C48/92B29K27/06B29K23/00
CPCB29C48/025B29C48/09B29C48/92F16L9/128
Inventor 高林梁强
Owner ZIBO JINYANGDA PLASTIC CO LTD
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