CN2668980Y

CN2668980Y - Plastic pipe fitting with two-layer bellmouth structure

Info

Publication number: CN2668980Y
Application number: CNU2004200193082U
Authority: CN
Inventors: 李耀东
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-01-08
Filing date: 2004-01-08
Publication date: 2005-01-05
Anticipated expiration: 2014-01-08

Abstract

The utility model belongs to the technical field of plastic pipes, and the plastic pipe fitting comprises a bellmouth and the main body of the pipe fitting. The bellmouth of a long pipe fitting comprises an inside layer and an outside layer. An annular space which can hot melt and insert into the inner layer and the outside layer of the composite pipe simultaneously is formed between the two layers. The utility model is processed into a pipe fitting by adopting the same plastic with the inner layer and the outer layer of the composite plastic pipe. The pipe fitting is provided with the bellmouth with two-layer structure, and the composite pipe can insert between the internal layer and the external layer via hot melting to make the pipe material and the pipe fitting melted as an integration. Thus, the connection is firmed, the phenomena of leakage and corrosion are avoided, and the manufacturing cost is reduced as compared with metal pipe fittings.

Description

A kind of plastic pipe of double-deck bellmouth structure

Technical field: belong to the plastic pipe technical field.

Background technique: composite plastic pipe is the novel pipeline that plastics and metal composite form, and its basic structure is that internal and external layer is plastics, and the mesosphere is a metallic material, bonds compound extrusion moulding between plastics and the metal with Bond.Mainly contain aluminium-plastic composite pipe and steel-plastic composite pipe at present.This composite plastic pipe has both the characteristics of plastic tube and metal tube, has excellent usability.

But the connection between the composite plastic pipe is with metal (copper or stainless steel) pipe fitting, connects with machinery type, and this causes the easy seepage of jointing, can cause corrosion to pipeline, reduce pipeline life, the metal pipe element cost of production is also high, energy consumption is big, and also producing the three wastes influences environmental protection.

Summary of the invention: the utility model is to provide connection between a kind of composite plastic pipe without metal pipe element, and jointing can seepage, can not produce corrosion to pipeline, cost of production is low, energy consumption is also low, without metallic material, to the also few a kind of plastic pipe that pollutes that produces of environment.

The utility model is done in such a manner:

Have inside and outside two-layerly at the socket of pipe fitting, form an energy in the middle of two-layer the inside and outside layer of the composite plastic pipe annular space that inserts of hot melt simultaneously.Its outer internal diameter size of annular space matches with the external diameter of composite plastic pipe, and its internal layer outside dimension matches with the internal diameter of composite plastic pipe.The used plastic materials of the inside and outside layer of used plastics of plastic pipe and composite plastic pipe is identical.

After implementing the utility model, improved the reliability that composite plastic pipe connects greatly, prevented the leakage problems of pipe joint, do not produce Corrosion of Pipeline yet, reduced cost without metallic material, cost of production is 1/5th of a metal lot pipe fitting only, and economic benefit is huge, simultaneously also reduced energy consumption, reduced pollution environment.

Description of drawings:

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model user mode schematic representation.

Embodiment:

Now the utility model is described in further detail in conjunction with the accompanying drawings.

After the utility model product structure design has been arranged, can design different size, difformity product such as threeway, elbow, pipe box etc. are designed different moulds by different product, can become the utility model by mold injection molding later on, as shown in Figure 1.

Fig. 2 specifically shows the utility model and the coupled condition of composite plastic pipe behind the seam crossing hot melt.Because hot melt state each other, the opening size of double-deck hot melting plastic pipe fitting 1 is the same with composite plastic pipe 2 wall thickness, the plastics of melting make its easy insertion, make tubing outer layer plastic 4 and pipe fitting plastics at 6 place's hot melts, inner plastic 5 and pipe fitting plastics are at 7 place's hot melts, and the melting plastics that overflow block up at 8,9,10 places, intermediate metal layer 3 is fully enclosed in the plastics, can not contact with the medium carried in air and the pipeline, solve the metal erosion problem, also solve leakage problems.Seam crossing is because be plastics of the same race, and the melting state makes the molecule melting together, has improved intensity, has saved metal.

Claims

1, a kind of plastic pipe of double-deck bellmouth structure is made up of bellmouth and pipe fitting body, it is characterized in that: have inside and outside two-layerly at the socket of pipe fitting, form an energy in the middle of two-layer with the internal and external layer of the composite plastic pipe annular space that inserts of hot melt simultaneously.

2, plastic pipe according to claim 1 is characterized in that: its outer internal diameter size of described annular space matches with the external diameter of composite plastic pipe, and its internal layer outside dimension matches with the internal diameter of composite plastic pipe.

3, plastic pipe according to claim 1 is characterized in that: its used plastic materials of described plastic pipe is identical with inside and outside layer of used plastic materials of composite plastic pipe.