CN201531686U - Composited tube - Google Patents
Composited tube Download PDFInfo
- Publication number
- CN201531686U CN201531686U CN2009202371053U CN200920237105U CN201531686U CN 201531686 U CN201531686 U CN 201531686U CN 2009202371053 U CN2009202371053 U CN 2009202371053U CN 200920237105 U CN200920237105 U CN 200920237105U CN 201531686 U CN201531686 U CN 201531686U
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- layer
- metal
- metal outer
- plastic
- internal surface
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Abstract
The utility model provides a composited tube, which comprises a metal outer tube layer and a plastic inner tube layer, wherein the internal surface of the metal outer tube layer is provided with a friction structure which is convenient for being connected with the plastic inner tube layer, metal tubes of the outer layer can bear larger pressure, smooth plastic tubes of the inner layer can enhance water passing capacity and rot resistance of pipes and tubes. The metal outer tube layer and the plastic inner tube layer are heated to melt to be fit to be laminated with friction faces through expansion and achieve tight connection when in production, and the metal tubes and the plastic tubes do not need glue-water to adhere.
Description
Technical field
The utility model belongs to metal-plastic composite pipe structure field, particularly relates to a kind of composite pipe simple in structure.
Background technique
The supporting tubing of China's water transfer pipe network is continued to use traditional zinc-plated tubing and cast iron tube always, but these tubing in use are easy to generate poisonous and harmful substances such as yellow rust, gonorrhoea, incrustation scale, and the serious harm people's is healthy.Along with rapid economy development, the raising day by day of living standard, the requirement of the existing drinking water quality of people are also urgent day by day, and the State Council, the Ministry of Construction also hereinafter limit in potable water network in succession and use zinc-plated tubing.Therefore, need develop a kind of novel tube that is suitable for the potable water network requirement.
China Patent No. is that 200720054906.7 utility model patent discloses a kind of steel-plastic composite pipe, comprises the metal body, and the metal inner surface of tube body is provided with plastic tube, is adhesives layer between metal body and the plastic tube.The disclosed metal body of this utility model patent is with leaning on adhesive bond between the plastic tube, in the tube forming process, have factor such as air between adhesive layer and plastic tube or the metal tube and cause can't secure bond, and in use Bond itself will cause also pipe performance to descend along with the decline of cohesive force.
Yet because the difference of the material between metal body and the plastic tube is bigger, if do not adopt adhesive layer can't realize combining closely between metal body and the plastic tube.
So must develop and a kind ofly can directly realize the metal body and plastic tube is compound and can avoid the novel tube that uses adhesive bonding.
The model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of and need not adopt adhesive layer and can realize close-connected composite pipe between metal tube and the plastic tube.
To achieve these goals, the technological scheme of employing is as follows:
A kind of composite pipe comprises metal outer pipe layer and plastic inner pipe layer, and the internal surface of described metal outer pipe layer is provided with is convenient to the friction structure that is connected with the plastic inner pipe layer.
The utility model is provided with friction structure by the internal surface at the metal outer pipe layer, by friction structure just can realize with the plastic inner pipe layer between tight the connection, simultaneously, with regard to the internal surface that can be implemented in metal tube friction structure is set by simple technology.
In the technique scheme, described friction structure is handled formed structure for the internal surface at the metal outer pipe layer carries out annular knurl.
Described friction structure also can be that the internal surface at the metal outer pipe layer is provided with latticed concaveconvex structure.
Described friction structure can also be that the internal surface at the metal outer pipe layer is provided with helicoidal structure.
Described friction structure can be that the internal surface at the metal outer pipe layer is provided with groove structure.
Outer field metal tube of the present utility model can bear bigger pressure, and the plastic tube that internal layer is level and smooth can improve tubing water passing capacity and anti-corrosive properties.When producing, then can realize tight the connection by expanding with the rubbing surface applying behind metal outer pipe layer and the plastic inner pipe layer heating and melting, need not glue between metal tube and the plastic tube bonding.
Description of drawings
The metal tube structural representation that Fig. 1 handles through annular knurl for the internal layer that the utility model adopts, wherein Fig. 1 (a) is axial sectional view, Fig. 1 (b) is a cross section view;
Fig. 2 is a structural representation of the present utility model, and wherein Fig. 2 (a) is axial sectional view, and Fig. 2 (b) is a cross section view.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Structure of the present utility model is made up of metal tube 1, plastic tube 2 that internal layer is handled through annular knurl as shown in Figure 2, constitutes steel-plastic composite pipe of the present utility model.Embodiment is: at first steel plate is carried out annular knurl and handle (can be latticed, helical and groove form etc.), then the butt welding of steel pipe two ends is formed the metal tube that the utility model adopts, as shown in Figure 1.By to outer layer metal tube and inner layer plastic tube heating and melting, realize the secure fit between annular knurl face metal tube and the plastic tube then, obtain steel-plastic composite pipe of the present utility model as shown in Figure 2.
Claims (5)
1. a composite pipe comprises metal outer pipe layer and plastic inner pipe layer, and the internal surface that it is characterized in that described metal outer pipe layer is provided with is convenient to the friction structure that is connected with the plastic inner pipe layer.
2. according to the described composite pipe of claim 1, it is characterized in that described friction structure handles formed structure for the internal surface at the metal outer pipe layer carries out annular knurl.
3. composite pipe according to claim 1 is characterized in that described friction structure is that the internal surface of metal outer pipe layer is provided with latticed concaveconvex structure.
4. composite pipe according to claim 1 is characterized in that described friction structure is that the internal surface of metal outer pipe layer is provided with helicoidal structure.
5. composite pipe according to claim 1 is characterized in that described friction structure is that the internal surface of metal outer pipe layer is provided with groove structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202371053U CN201531686U (en) | 2009-10-13 | 2009-10-13 | Composited tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202371053U CN201531686U (en) | 2009-10-13 | 2009-10-13 | Composited tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201531686U true CN201531686U (en) | 2010-07-21 |
Family
ID=42527090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202371053U Expired - Fee Related CN201531686U (en) | 2009-10-13 | 2009-10-13 | Composited tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201531686U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486350A (en) * | 2013-10-09 | 2014-01-01 | 苏州市吴中区曙光铜管厂 | Anti-corrosion pipeline |
| CN104197116A (en) * | 2014-09-26 | 2014-12-10 | 安徽正石新型建材有限公司 | Steel-plastic composite pipe |
| CN113649695A (en) * | 2021-08-12 | 2021-11-16 | 东莞理工学院 | Tubular metal anti-corrosion treatment device and application method |
-
2009
- 2009-10-13 CN CN2009202371053U patent/CN201531686U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486350A (en) * | 2013-10-09 | 2014-01-01 | 苏州市吴中区曙光铜管厂 | Anti-corrosion pipeline |
| CN104197116A (en) * | 2014-09-26 | 2014-12-10 | 安徽正石新型建材有限公司 | Steel-plastic composite pipe |
| CN113649695A (en) * | 2021-08-12 | 2021-11-16 | 东莞理工学院 | Tubular metal anti-corrosion treatment device and application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100721 Termination date: 20141013 |
|
| EXPY | Termination of patent right or utility model |