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Hollow concave-convex corrugated pipe and manufacture method thereof

A corrugated pipe and hollow pipe technology, applied in the field of hollow concave-convex corrugated pipes and production, can solve the problems of uneven compressive strength, large consumption of raw materials, heavy weight, etc. Effect

Active Publication Date: 2015-01-07
HANGZHOU JINMIN PIPES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages: Since the wall of the corrugated pipe is composed of the inner wall and the outer wall, the compressive strength of the inner wall is enhanced by the outer wall, which not only has a large weight, consumes a lot of raw materials, but also has uneven compressive strength.

Method used

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  • Hollow concave-convex corrugated pipe and manufacture method thereof
  • Hollow concave-convex corrugated pipe and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1: with reference to attached figure 1 . A hollow concave-convex corrugated pipe, the wall surface of the hollow tube core 2 has a concave-convex structure 4, a composite plastic layer 3 is formed on the inner and outer walls of the hollow tube core 2, and the hollow tube core 2 with the composite plastic layer 3 is spirally stacked to form a corrugated tube 1 , The spiral pipe walls forming the corrugated pipe 1 are melt-tightly connected. The hollow tube core 2 is a metal tube core or a non-metal tube core, and its manufacturing method belongs to the prior art, which will not be described here.

Embodiment 2

[0011] Embodiment 2: On the basis of Embodiment 1, a method for manufacturing a hollow concave-convex corrugated pipe, the hollow pipe 2 is directly wound on the corrugated pipe after the composite plastic layer 3 through the large-diameter polyolefin winding growth pipe production line manufactured by the applicant The two corrugated surfaces on the forming die are deformed and overlapped under the action of the corrugated pipe forming die to form the inner wall of the corrugated pipe 1, and the walls of the plastic pipe with the hollow core 2 are melted and bonded to form the outer wall of the hollow concave-convex corrugated pipe. The wall surface of the hollow tube core 2 has a concave-convex structure 4 .

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Abstract

The invention relates to a hollow concave-convex corrugated pipe and a manufacture method thereof. By the aid of the hollow concave-convex corrugated pipe and the manufacture method thereof, the strength of the corrugated pipe with a large aperture can be effectively improved, the weight of the corrugated pipe with the large aperture can be reduced, and material consumption for the corrugated pipe with the large aperture can be reduced. A wall face of a hollow pipe core is of a concave-convex structure, plastic layers are composited on the inner wall and the outer wall of the hollow pipe core, the hollow pipe core with the composited plastic layers is spirally overlapped to form the corrugated pipe, and spiral pipe walls which form the corrugated pipe are connected with each other in a melted and sealed manner. The hollow concave-convex corrugated pipe and the manufacture method thereof have the advantages that a precedent is set for the single-walled concave-convex hollow corrugated pipe; the strength of the corrugated pipe with the large aperture is improved, the weight of the corrugated pipe with the large aperture is reduced, and the material consumption for the corrugated pipe with the large aperture is reduced; since the surface of a metal pipe core or a non-metal pipe core is a concave-convex surface, bonding strength is good when the melted plastic layers are composited with the concave-convex surface on the metal pipe core or the non-metal pipe core, the plastic layers and the surface of the metal pipe core or the non-metal pipe core can be firmly and integrally connected via formed concave-convex positioning heads, and the corrugated pipe is guaranteed against being layered during usage.

Description

technical field [0001] The invention relates to a hollow concave-convex corrugated pipe which can effectively improve the strength of the large-diameter corrugated pipe, reduce the weight of the large-diameter corrugated pipe, and reduce the material of the large-diameter corrugated pipe and a manufacturing method thereof, belonging to the field of corrugated pipe manufacturing . Background technique [0002] CN201731192U, name "large-diameter double-wall corrugated water pipe", its pipe wall is composed of two layers inside and outside, its inner pipe wall is smooth, the outer pipe wall is trapezoidal corrugated, steel hoops are arranged in the cavity between the inner and outer walls, and The trapezoidal bottom groove on the outer wall is connected with the inner wall as a whole. The cavity between the inner and outer walls of the large-diameter double-wall corrugated water pipe is provided with a steel hoop, which improves the strength of the water pipe. Compared with th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L11/16B29C53/58
Inventor 金献民洪建坤谈刚强欧阳文敏
Owner HANGZHOU JINMIN PIPES