CN203770868U

CN203770868U - Composite drain pipe

Info

Publication number: CN203770868U
Application number: CN201420186626.1U
Authority: CN
Inventors: 王帅波; 褚言永; 王爱国; 郝聚凯; 袁春雷
Original assignee: East Linyi Vertical Plastic Building Material Co Ltd
Current assignee: East Linyi Vertical Plastic Building Material Co Ltd
Priority date: 2014-04-07
Filing date: 2014-04-07
Publication date: 2014-08-13
Anticipated expiration: 2024-04-07

Abstract

The utility model relates to the technical field of drainage and sewage pipes, in particular to a composite drain pipe. The composite drain pipe comprises a composite pipe base body, PVC profiles with the elliptic cross section and a PE plastic layer, wherein the composite pipe base body is formed by overlapping and bonding a plurality of PE strip-shaped plates with the T-shaped cross section and then rolling the plates in a spiral mode. The PE strip-shaped plates comprise ridge portions, cap portions arranged at the top ends of the ridge portions and bottoms arranged at the bottom ends of the ridge portions, the two sides of each bottom are provided with overlapping portions respectively, wherein the overlapping portions are overlapped and bonded with the adjacent PE strip-shaped plates. Each PVC profile is installed between the ridge portions of every two adjacent PE strip-shaped plates. The outer surface of the composite pipe base body and the outer surfaces of the PVC profiles are wrapped by the PE plastic layer. The composite drain pipe is simple in production process and has the advantages of being resistant to chemical corrosion, resistant to impact, resistant to drought, resistant to aging, low in weight and the like.

Description

A kind of composite drainage pipe

Technical field

The utility model relates to draining blowdown pipe technology field, specifically, relates to a kind of composite drainage pipe.

Background technique

The pipeline that building construction, municipal drainage, pollutant discharge of enterprise etc. are used is generally to use plastic cement winding structure pipe and two flat walls steel band entwining tube, has the features such as lightweight, resistance is little.For example: ZL01216004.0 discloses a kind of large-aperture pipe wound with hollow belt, this entwining tube consists of square tube type hollow belt and the inside and outside two-layer tube wall being mutually bonded with its adhesive layer spiral winding side by side and the identical hollow interlayer of spiral that is clipped between them.But the disclosed entwining tube low strength of this patent, especially ring stiffness is lower.

In recent years, competitively study the steel plastic drain pipe with steel band reinforced plastics both at home and abroad, being relatively typically outer surface is undulatory spiral steel plastic drain pipe.For example:

1, ZL200720081236.8 discloses a kind of large-diameter steel-plastic spiral drain, has higher ring stiffness and corrosion resistance, and still this steel is moulded spiral drain and consumed a lot of steel, and cost is higher.

2, ZL200820064736.5 discloses a kind of Double-flat wall steel plastic drainpipe, inside and outside wall is even surface, comprise the tube wall by banded sheet material helical coil system, banded sheet material includes bottom, the spine of holding up on bottom, there is cap portion in spine on top, and ribbon spiral is arranged between spine, in cap portion and steel band top, is coated with plastic cement.This two flat walls steel band entwining tube, in order to increase the ring stiffness of pipe wound with hollow belt, generally use steel band or chain link fence, although ring stiffness increases significantly, in long-term using process, the steel band of inner embedding knot is very easily because electrochemical corrosion produces pitting corrosion, not only can cause environmental pollution, and the corrosion meeting of steel band causes ring stiffness to decline, working life is lower.

3, ZL200620034769.6 discloses a kind of plastic compound winding pipe, tube wall consists of the rectangular tubular hollow belt and the HDPE filling plastic body that are spiral winding shape, HDPE filling plastic body bonds and is filled in the sidewall spacers place between each spiral of the rectangular tubular hollow belt that is spiral winding shape, the tube wall of rectangular tubular hollow belt consists of PVC plastic layer, composite tack coat and HDPE plastic layer respectively from the inside to the outside, between PVC plastic layer and HDPE plastic layer with the adhesion of composite tack coat phase.This composite, water-drain tubing of moulding has obvious environment-friendly advantage, service condition at low ring stiffness, there is resistance to chemical attack, shock resistance, drought-enduring ageing-resistant, the feature such as lightweight, but, because PVC and PE are two kinds of different materials, there is different coefficient of linear expansion, although special composite adhesive bonding for its connecting part, but using process is also easily ftractureed, cause the waste of adhesive and the rising of cost, and also there is in process of production larger difficulty in its interstitital texture and design proposal.

Model utility content

The purpose of this utility model is, a kind of composite drainage pipe is provided, to solve above-mentioned technical problem.

For achieving the above object, the technological scheme that the utility model adopts is:

A composite drainage pipe, is characterized in that: the banded sheet material of PE that to comprise by several cross sections be T shape mutually overlaps and by spiral, rolls the composite pipe matrix, the cross section that form after bonding is oval-shaped PVC section bar and PE plastic layer; The banded sheet material of described PE comprises spine, be arranged at the cap portion on spine top and be arranged at bottom three parts of spine bottom, and the both sides of described bottom are respectively equipped with for overlapping bonding clinch with the banded sheet material of adjacent PE; Described PVC section bar is arranged between the spine of the banded sheet material of adjacent two PE; Described PE plastic layer is coated on the outer surface of composite pipe matrix and PVC section bar.

Beneficial effect: compared with prior art, production technology of the present utility model is simple, has resistance to chemical attack, shock resistance, the drought-enduring feature such as ageing-resistant, lightweight.Specifically, the utility model adopts and moulds plastic composite structure, can avoid the secondary pollution of environment, simultaneously, due to the long service life of plastics, the utlity model has working life that resistance to chemical corrosion is good, more permanent and the stable features such as ring stiffness, can meet the needs of waste pipe; In addition, the utility model can adopt post forming method to produce product, and the yield rate of product is high, and manufacturing equipment is simple, and pipe with small pipe diameter is all applicable to greatly, has good Social benefit and economic benefit.

Accompanying drawing explanation

Fig. 1 is tangent plane structural representation of the present utility model.

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

With reference to Fig. 1, composite drainage pipe described in the utility model, inner and outer wall is all even surface, and the banded sheet material of PE that to comprise by several cross sections be T shape mutually overlaps and by spiral, rolls the composite pipe matrix, the cross section that form after bonding is oval-shaped PVC section bar 2 and PE plastic layer 1.The banded sheet material of described PE comprises spine 4, be arranged at the cap portion 3 on spine 4 tops and be arranged at bottom 5 three parts of spine 4 bottoms, and the both sides of described bottom 5 are respectively equipped with for overlapping bonding clinch 6 with the banded sheet material of adjacent PE.Described PVC section bar 2 is arranged between the spine 4 of the banded sheet material of adjacent two PE; Described PE plastic layer 1 is coated on the outer surface of composite pipe matrix and PVC section bar 2.

Production technology of the present utility model:

1, first by the banded sheet material of PE, the clinch by 5 both sides, bottom overlaps bondingly mutually, and then, helical coil panel is made composite pipe matrix;

2, between the spine 4 of the banded sheet material of adjacent two PE, be pressed into PVC section bar 2, to strengthen the ring stiffness of pipeline;

3, at composite pipe matrix and the coated good PE plastic layer 1 of PVC section bar 2.

Compared with prior art, advantage applies of the present utility model is in the following aspects:

1, compare with 200620034769.6 disclosed plastic compound winding pipes, the utility model can adopt two-step method production technology, wherein do not relate to various adhesive bondings, can significantly reduce production costs, more easily operation aspect technological forming in addition, also has advantages of that quality is light, easy for installation.

2, compare with pipe wound with hollow belt, the utility model, by introducing hardness and the higher PVC section bar of ring stiffness at PE plastics cavity internal layer, can effectively increase the ring stiffness of tubing.

3,, with two flat walls steel band entwining tube ratio, the utility model adopts plastic material to replace steel band section bar, thus the problem of having avoided environmental pollution that in long-term using process, steel band corrosion brings and ring stiffness to decline, thereby the life-span is longer, more environmental protection.

Claims

1. a composite drainage pipe, is characterized in that: the banded sheet material of PE that to comprise by several cross sections be T shape mutually overlaps and by spiral, rolls the composite pipe matrix, the cross section that form after bonding is oval-shaped PVC section bar (2) and PE plastic layer (1); The banded sheet material of described PE comprises spine (4), be arranged at the cap portion (3) on spine (4) top and be arranged at bottom (5) three parts of spine (4) bottom, and the both sides of described bottom (5) are respectively equipped with for overlapping bonding clinch (6) with adjacent PE band shape sheet material; Described PVC section bar (2) is arranged between the spine (4) of the banded sheet material of adjacent two PE; Described PE plastic layer (1) is coated on the outer surface of composite pipe matrix and PVC section bar (2).