Plastic double-rib winding corrugated pipe

Abstract

The invention relates to a plastic double-rib winding corrugated pipe, which comprises a pipe material bottom belt and a plastic profile, wherein the plastic profile is spirally wound on the outer side of the pipe material bottom belt to form an outer corrugated shape; the plastic profile comprises a hollow body and vertical ribs, and at least two vertical ribs are formed; and the vertical ribs and part of the body are enclosed into a trilateral or quadrangular supporting structure. In the invention, two vertical ribs are arranged in the plastic profile, so that the plastic profile is internally enclosed into a trilateral or quadrangular supporting structure; when the plastic profile is subjected to external force, all sides of the trilateral or quadrangular are forced and dispersed, so that the plastic profile is not easy to collapse, and the ring rigidity of the pipe material is greatly improved. longitudinal through holes are form in the vertical ribs, so that the meter weight of the corrugated pipe is reduced and the linear velocity is increased during production.

Description

【Technical Field】 [0001] The invention relates to a plastic-wound corrugated pipe, which is an underground pipe material, which is widely used in laying various drainage pipelines. 【Background technique】 [0002] The Chinese patent number is ZL 201220119995.X, the patent named a strip and the internal rib reinforced spiral wound pipe prepared therefrom discloses a strip including a panel, an arc-shaped body and a vertical rib, the arc-shaped body is located The outer side of the panel forms a cavity between the panel and the arc-shaped body, and the vertical rib is located in the cavity between the arc-shaped body and the panel and divides the cavity into two. It is the overlapping part. The panels, arc-shaped bodies and vertical ribs in the strip are formed by one-time extrusion. The pipe body is a tubular body formed by winding and fusion welding the strip. The arc-shaped body forms an outer corrugated shape on the outside of the pipe body, and pipe joints are plastic welded ...

AI Technical Summary

Problems solved by technology

[0005] 2. Since the extrusion molding is a strip with hollow and overlapping edges, the heat in the hollow cavity cannot be released when the strip is produced, and the lap joints and vertical ribs on both sides need to be formed, so this production The speed of the strip will be too slow to realize real benefits

[0006] 3. Since the strip is preformed first, and then the two sides of the cold strip are lapped and welded to form a pipe, the lap joint of the pipe is the weakest point and is exposed outside the pipe, which is affected by climate temperature, transportation and The change of installation has a great influence, the tensile strength of the overlapping part is not enough, it is easy to break, and the corrugation is spring-like

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