CN2864286Y

CN2864286Y - Steel/plastic compound tube with convex nozzle framework

Info

Publication number: CN2864286Y
Application number: CN 200520145494
Authority: CN
Inventors: 蔡海华
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-25
Filing date: 2005-12-25
Publication date: 2007-01-31
Anticipated expiration: 2015-12-25

Abstract

The utility model relates to a steel and plastic composite pipe with extruding nib, holes and skeleton structure. It comprises of the steel pipe at middle layer, which is covered by the internal and external plastic layers. Holes and extruding nibs are set on the surface of the steel pipe. With the configuration of the skeleton structure, the steel pipe and the internal and external plastic layer can interweave with one another fast and closely, which prevent the detachment and sliding off the steel pipe from the plastic layer caused by stress. The extruding nib can enhance the reinforcing bars and the bilayer steel pipe as well as effectively prevent the sliding off of steel pipe from the plastic layer due to the relative movement. Under the precondition of same strength and rigidity, the thickness for the wall of the skeleton steel pipe is less by at least 15% than that of the net and steel strip skeleton, thus reducing the consumption of materials. This sort of steel pipe, with the net-like structure, has certain elasticity, which, together with the chemical and physical natures of the plastic, would ensure the composite steel pipe with the advantages of high strength, excellent rigidity, light weight, outstanding performance in shock and corrosion resistance, little pressure loss, consolidated joint and sealing of steel and plastic, low cost, fine performance in fire resistance and heat preservation, and effective reduction of noise from rushing fluid. Therefore, it is worth for the promotion on large scale.

Description

A kind of band convex hole on framework steel-plastic composite pipe

Technical field: the utility model relates to a kind of composite metal-plastic pipe, particularly a kind of steel-plastic composite pipe.

Background technique: current because various composite pipes have good usability and characteristics such as quick and easy for installation, be widely used in worker, agricultural and live in as conveyance conduit, as aluminium-plastic composite pipe, steel-plastic composite pipe and other composite metal-plastic pipe etc.And steel-plastic composite pipe is because advantage such as its intensity height, good rigidly, corrosion-resistant, the pressure loss is little, shock resistance and very popular, being particularly suitable for doing bigbore pipe uses, on structure, also there is certain deficiency in steel-plastic composite pipe at present: (1) steel mesh framework composite tube and steel-wire carcass composite pipe intensity are on the low side, rigidity is not fine, and the application area of steel-plastic composite pipe is restricted; (2) the steel band framework steel plastic compound tube is owing to the increase of its wall thickness along with caliber increases, cause pipe heavily to increase, the plant capacity that tubing is made, equipment volume and energy consumption increase, the cost height, in addition, steel pipe and inside and outside layer plastics are by the bonding sealing of hot melt adhesive, it is firm inadequately easily to cause steel pipe to combine with plastics, particularly under the long and cold and hot stress that causes of time one, can take place to separate between steel pipe and the plastics, slippage, cause steel pipe by corrosion, reduction of service life.

Summary of the invention: the purpose of this utility model is to overcome above-mentioned shortcoming and provides a kind of intensity height, good rigidly, in light weight, shock resistance, steel to mould the band convex hole on framework steel-plastic composite pipe that combination seal is firm and cost is low.

The purpose of this utility model can be achieved as follows: this band convex hole on framework steel-plastic composite pipe mainly coats the middle level steel pipe by inner plastic and outer layer plastic and constitutes, and it is characterized in that: it is porose to distribute on the steel pipe of described middle level, described pore area convex mouth.

As further improvement of the utility model: the hole of this band convex hole on framework steel-plastic composite pipe is the aciculiform hole.

As further improvement of the utility model: the hole of this band convex hole on framework steel-plastic composite pipe is bar hole or bar shaped seam.

As further improvement of the utility model: being interweaved between this band convex hole on framework steel-plastic composite pipe inner plastic, outer layer plastic and middle level steel pipe bonding is interlocked.

As further improvement of the utility model: at least 2 in the hole of this band convex hole on framework steel-plastic composite pipe and being evenly distributed in interval on the surface of middle level steel pipe.

As further improvement of the utility model: internal surface, the outer surface of the middle level steel pipe of this band convex hole on framework steel-plastic composite pipe have one deck zinc-plated.

As further improvement of the utility model: have one deck hot melt adhesive bonding between the internal surface of the middle level steel pipe of this band convex hole on framework steel-plastic composite pipe and the inner plastic and between the outer surface of middle level steel pipe and the outer layer plastic.

The utility model is rolled into the steel pipe of steel-plastic composite pipe again by the hole that steel band is washed into surface band convex mouth, make inside and outside layer plastics realize through the hole digesting, the interlock that is interweaved between steel pipe and the inside and outside layer plastics links, very sealing combines securely, avoids effectively that stress causes separating between steel pipe and the plastics, the situation of slippage takes place.In this band convex hole on framework steel pipe, convex mouth plays the effect of stiffening rib on the one hand, it is the same that numerous on the other hand convex mouthes are lined up another layer steel pipe, the effect that double-layer pipe is arranged, and convex mouth also can effectively prevent the slippage that steel pipe and plastics produce because of relatively moving, if reach same intensity and rigidity, the thickness of pipe wall of this band convex hole on framework steel pipe lacks more than 15% than the plain carbon steel plastic composite, thereby consumptive material is few.In addition, band convex hole on framework steel pipe is owing to be netted, has certain elasticity, add plastics excellent in chemical, physical property, make the utility model steel-plastic composite pipe have intensity height, good rigidly, in light weight, shock resistance, corrosion-resistant, the pressure loss is little, steel moulds that combination seal is firm, cost is low, good fire resistance and heat insulating ability are arranged and effectively weaken advantages such as hydraulic shock noise, therefore, be worthy of popularization very much.

Description of drawings:

Fig. 1 is the structural representation of the utility model band convex mouth aciculiform hole on framework steel-plastic composite pipe;

Fig. 2 is the structural representation of the utility model band convex mouth bar hole framework steel plastic compound tube;

Fig. 3 is the axial partial sectional view of Fig. 1 steel-plastic composite pipe;

Fig. 4 is the axial partial sectional view of Fig. 2 steel-plastic composite pipe.

Embodiment: the utility model is described in further detail below in conjunction with accompanying drawing:

With reference to figure 1, Fig. 2, Fig. 3 and Fig. 4, band convex mouth aciculiform hole on framework steel-plastic composite pipe of the present utility model as shown in Figure 1 coats middle level steel pipe 3 by inner plastic 1 and outer layer plastic 2 and constitutes, be distributed with the hole 4 of aciculiform on this middle level steel pipe 3, hole 4 has convex mouth 5, the internal surface of middle level steel pipe 3 and outer surface are conducted through aciculiform hole 4, and the cross section of middle level shown in Figure 1 steel pipe 3 as shown in Figure 3.Band convex mouth bar hole framework steel plastic compound tube of the present utility model as shown in Figure 2 coats middle level steel pipe 3 by inner plastic 1 and outer layer plastic 2 and constitutes, be distributed with the hole 4 of bar shaped on this middle level steel pipe 3, hole 4 has convex mouth 5, the internal surface of middle level steel pipe 3 and outer surface are conducted through bar hole 4, and the cross section of middle level shown in Figure 2 steel pipe 3 as shown in Figure 4.The hole 4 of middle level steel pipe 3 is at least 2, in Fig. 1 and Fig. 2, then shown the situation that is distributed with numerous holes 4, and be that (mutual spacing is even) is distributed on the surface of middle level steel pipe 3 (certainly with interval equably, also can be with interval but be distributed in unevenly on the surface of middle level steel pipe 3 in hole 4), because the many more band convex hole on framework that can demonstrate steel pipe more in hole 4, plastics enter in the steel pipe outside steel pipe when also being beneficial to the processing composite pipe more, thereby in making, combining between outer layer plastic and the steel pipe is more firm, when hole 4 has only 2 or when several, then need the length of groove 4 or widely suitably add the great talent and be beneficial to the processing composite pipe, and in, outer layer plastic is relative with the combination between the steel pipe so infirm yet.

Make with mould or cutter punch process on the steel band of hole 4 before rolling into steel pipe on middle level steel pipe 3 surfaces, as shown in the figure, because mould or cutter are arranged, when making punch process hole 4 is got through, the periphery in hole 4 stays a circle shirt rim naturally, and this circle shirt rim is exactly described convex mouth 5.

From as can be known above-mentioned, the inner plastic 1 of band convex hole on framework steel-plastic composite pipe of the present utility model is that plastics enter outside middle level steel pipe 3 in it and form, the bonding that is interweaved between inner plastic 1, outer layer plastic 2 and the middle level steel pipe 3 is interlocked, add middle level steel pipe 35 pairs of convex mouthes in, the positioning action of outer layer plastic, therefore, link as the knitmesh interlock that is interweaved between steel pipe and the inside and outside layer plastics, very sealing combines securely, as shown in Figure 3, Figure 4.

In order to strengthen the anticorrosive property of middle level steel pipe 3, the internal surface of middle level steel pipe 3 and outer surface also have one deck zinc-plated, and perhaps just its internal surface has one deck zinc-plated, and perhaps just its outer surface has one deck zinc-plated.Simultaneously, more firm in order to strengthen combine between middle level steel pipe 3 and the inside and outside layer plastics, make the steel-plastic composite pipe performance more excellent, reaching between the internal surface of middle level steel pipe 3 and the inner plastic 1 between the outer surface of middle level steel pipe 3 and the outer layer plastic 2 has one deck hot melt adhesive bonding.

In sum, the utility model steel-plastic composite pipe utilizes the hole 4 of middle level steel pipe 3, the skeletal structure that convex mouth 5 forms, make this composite pipe have intensity height, good rigidly, in light weight, shock resistance, corrosion-resistant, the pressure loss is little, steel moulds that combination seal is firm, cost is low, good fire resistance and heat insulating ability are arranged and effectively weaken characteristics such as hydraulic shock noise.

Claims

1. a band convex hole on framework steel-plastic composite pipe mainly coats middle level steel pipe (3) by inner plastic (1) and outer layer plastic (2) and constitutes, and it is characterized in that: described middle level steel pipe (3) is gone up distribute porose (4), described hole (4) band convex mouth (5).

2, band convex hole on framework steel-plastic composite pipe according to claim 1 is characterized in that: described hole (4) are the aciculiform hole.

3, band convex hole on framework steel-plastic composite pipe according to claim 1 is characterized in that: described hole (4) are bar hole or bar shaped seam.

4, according to claim 1 or 2 or 3 described band convex hole on framework steel-plastic composite pipes, it is characterized in that: the bonding that is interweaved between described inner plastic (1), outer layer plastic (2) and the middle level steel pipe (3) is interlocked.

5, according to claim 1 or 2 or 3 described band convex hole on framework steel-plastic composite pipes, it is characterized in that: (4) at least 2 in described hole and being evenly distributed in interval on the surface of middle level steel pipe (3).

6, according to claim 1 or 2 or 3 described band convex hole on framework steel-plastic composite pipes, it is characterized in that: internal surface, the outer surface of described middle level steel pipe (3) have one deck zinc-plated.

7, according to claim 1 or 2 or 3 described band convex hole on framework steel-plastic composite pipes, it is characterized in that: have one deck hot melt adhesive bonding between the internal surface of described middle level steel pipe (3) and the inner plastic (1) and between the outer surface of middle level steel pipe (3) and the outer layer plastic (2).