CN202001739U

CN202001739U - Double-wall twined pipe made from HDPE (high density polyethylene) steel strip

Info

Publication number: CN202001739U
Application number: CN2011200504857U
Authority: CN
Inventors: 姚家红
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-02-28
Filing date: 2011-02-28
Publication date: 2011-10-05
Anticipated expiration: 2021-02-28

Abstract

The utility model relates to a double-wall twined pipe made from an HDPE (high density polyethylene) steel strip. The double-wall twined pipe is formed by spirally winding a clip-steel-shaped plastic plate and a linear shape steel strip and wrapping and welding the clip-steel-shaped plastic plate and the linear shape steel strip through hot melt glue, the linear steel strip is inserted into the clip-steel-shaped plastic plate. In the double-wall twined pipe made from the HDPE steel strip, the steel strips are inserted into two sides of the plate strip, the outer layer and the inner layer of a pipe wall are covered by plastic, and then the plate strip is wound on a pipeline molding machine and is welded into a pipeline. The welding technique adopts international advanced end surface heat welding technique, so that the unreliability of the single-layer welding is overcome, the radial crack possibility of a welding joint is effectively avoided, and simultaneously, the double-wall twined pipe has the advantages of high rigidity, simpleness in manufacture and the like.

Description

The binary wall twisting and pipe that utilizes the high-density polyethylene steel band to make

Technical field

The utility model relates to the soil stack installation in city, particularly relates to a kind of binary wall twisting and pipe that utilizes high density polyethylene (HDPE) (High Density Polyethylene abbreviates " HDPE " as) steel band to make.

Background technique

According to China's city public utility generaI investigation, what using at present is the municipal drainage pipe, its pipe material mainly is to manage on behalf of another for concrete pipe (cement pipe), cast iron tube, stoneware pipe, steel pipe and plastic tube (PVC, PE single-wall corrugated pipe, double-wall corrugated pipe and winding structure pipe) two.Wherein steel pipe, cast iron tube, vitrified-clay pipe and cement pipe all belong to rigid conduit, and this is the first generation product of waste pipe, and plastic tube belongs to second generation waste pipe, are typical flexible pipes.

First generation waste pipe can satisfy the requirement that rigidity is a ring stiffness, and price is also lower, but has that corrosion resistance is poor, the life-span is short and problem such as joint easy to leak.

And have corrosion resistance, advantage such as in light weight for second generation waste pipe, but the intensity of plastic tube (ring stiffness) deficiency, cost performance is low.

In various drainage pipes, use entwining tube (third generation waste pipe) the most generally at present, this pipeline has corrosion-resistant, good toughness, temper toughness with gentleness, advantage such as easy for installation, but but still there are a lot of problems in this entwining tube, and for example intensity is low, run into hard stone, the metal bump extruding easily causes pit, until perforation.

Recently in year, research is fallen over each other with band steel reinforced plastics tubing in countries in the world, wherein relatively is typically, outer surface is the spiral steel plastic strip water pipe of ripple, but because its unreasonable structure causes its tube wall thickness to differ greatly, thereby intensity is inhomogeneous, has weak link.

The model utility content

Advantages such as the purpose of this utility model is the problems referred to above at prior art, and a kind of binary wall twisting and pipe that utilizes the high-density polyethylene steel band to make is provided, and has the ring stiffness height, and manufacturing equipment is simple.

The technical solution of the utility model: a kind of binary wall twisting and pipe that utilizes the high density polyethylene (HDPE) coated steel band, mould flitch material and in-line steel band by the Back Word steel and twine and form with the hot melt adhesive clad welded through spiral, this in-line steel band embeds described Back Word steel and moulds in the flitch material.

In the utility model, described in-line steel band embeds described Back Word steel and moulds the interior both sides of flitch material.

In the utility model, the both sides that described Back Word steel moulds the flitch material are respectively equipped with groove, the tongue that is complementary, and described Back Word steel moulds between the flitch material and is connected by described groove, tongue.

In the utility model, the inside and outside two-layer tube wall of described binary wall twisting and pipe is by plastic overmold.

The beneficial effect that the utlity model has: the binary wall twisting and pipe that utilizes the high-density polyethylene steel band to make described in the utility model, embed steel band by the both sides in strip, internal and external layer by the plastic overmold tube wall, on the pipeline molding machine, twine and be fused into pipeline with strip again, its welding technique has adopted international advanced person's end face heating welding technique, when overcoming the unreliability of individual layer welding, the possibility of cracking simultaneously appears radially in more effective weld seam of having avoided, possesses the ring stiffness height simultaneously, advantage such as its manufacturing equipment is simple.

Description of drawings

Fig. 1 is the sectional drawing that utilizes the binary wall twisting and pipe that the high-density polyethylene steel band makes described in the utility model;

Fig. 2 is the interconnective sectional drawing of the binary wall twisting and pipe that utilizes the high-density polyethylene steel band to make described in the utility model.

[figure number is to as directed]

1 Back Word steel moulds flitch material 2 in-line steel bands

3 grooves, 4 tongues

Embodiment

Further understand and understanding for making structure characteristic of the present utility model and the effect reached had, cooperate detailed explanation, be described as follows in order to preferred embodiment and accompanying drawing:

Fig. 1 is the sectional drawing that utilizes the binary wall twisting and pipe that the high-density polyethylene steel band makes described in the utility model, and Fig. 2 is the interconnective sectional drawing of the binary wall twisting and pipe that utilizes the high-density polyethylene steel band to make described in the utility model, as shown in the figure.The binary wall twisting and pipe that utilizes the high density polyethylene (HDPE) coated steel band described in the utility model, mould flitch material 1 and in-line steel band 2 (or being called " 1 " font steel band) by the Back Word steel and twine and form with the hot melt adhesive clad welded through spiral, in-line steel band 2 embedding Back Word steel mould in the flitch material 1.And the inside and outside two-layer tube wall of binary wall twisting and pipe all is by plastic overmold.

Wherein, in the utility model preferred embodiment, above-mentioned in-line steel band 2 embeds the Back Word steel and moulds both sides in the flitch material 1, that is to say that in-line steel band 2 is built in Back Word rigidity plastics sheet material 1 and by plastic overmold.

In addition, because the connection that existing steel moulds between the flitch material generally forms by glue is bonding, therefore insecure, break easily, and in the utility model preferred embodiment, the both sides of taking to mould flitch material 1 at the Back Word steel are respectively equipped with groove 3, the tongue 4 that is complementary, and the Back Word steel moulds between the flitch material 1 and just can be connected (as shown in Figure 2) by groove 3, tongue 4.

Hence one can see that, the binary wall twisting and pipe that utilizes the high-density polyethylene steel band to make described in the utility model, embed steel band by the both sides in strip, by the internal and external layer of plastic overmold tube wall, on the pipeline molding machine, twine and be fused into pipeline with strip again, its welding technique has adopted international advanced person's end face heating welding technique, when overcoming the unreliability of individual layer welding, advantages such as the possibility of cracking simultaneously appears radially in more effective weld seam of having avoided, and possesses the ring stiffness height simultaneously, and its manufacturing equipment is simple.

In sum, it only is preferred embodiment of the present utility model, be not to be used for limiting the scope that the utility model is implemented, all equalizations of doing according to the described shape of the utility model claim scope, structure, feature and spirit change and modify, and all should be included in the claim scope of the present utility model.

Claims

1. a binary wall twisting and pipe that utilizes the high density polyethylene (HDPE) coated steel band is characterized in that, moulds flitch material and in-line steel band by the Back Word steel and twines and form with the hot melt adhesive clad welded through spiral, and this in-line steel band embeds described Back Word steel and moulds in the flitch material.

2. the binary wall twisting and pipe that utilizes the high density polyethylene (HDPE) coated steel band according to claim 1 is characterized in that, described in-line steel band embeds described Back Word steel and moulds the interior both sides of flitch material.

3. the binary wall twisting and pipe that utilizes the high density polyethylene (HDPE) coated steel band according to claim 1 and 2, it is characterized in that, the both sides that described Back Word steel moulds the flitch material are respectively equipped with groove, the tongue that is complementary, and described Back Word steel moulds between the flitch material and is connected by described groove, tongue.

4. the binary wall twisting and pipe that utilizes the high density polyethylene (HDPE) coated steel band according to claim 3 is characterized in that, the inside and outside two-layer tube wall of described binary wall twisting and pipe is by plastic overmold.