CN202955393U - Bending-connection steel-plastic composite pipe with external thread insert - Google Patents
Bending-connection steel-plastic composite pipe with external thread insert Download PDFInfo
- Publication number
- CN202955393U CN202955393U CN 201220720153 CN201220720153U CN202955393U CN 202955393 U CN202955393 U CN 202955393U CN 201220720153 CN201220720153 CN 201220720153 CN 201220720153 U CN201220720153 U CN 201220720153U CN 202955393 U CN202955393 U CN 202955393U
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- pipe
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- plastic
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Abstract
The utility model discloses a bending-connection steel-plastic composite pipe with an external thread insert. The pipe comprises a bend, wherein a steel-plastic composite pipe on which a steel pipe is compounded is connected to one end of the bend; a coaxial ring-shaped concave hole is formed in the pipe wall at one end of the bend; the steel-plastic composite pipe is embedded in the ring-shaped concave hole; and the insert with an external thread is connected to the other end of the bend through injection molding. According to the utility model, as the coaxial ring-shaped concave hole in the wall of the bend is connected with the steel-plastic composite pipe in an embedded fitting manner, the steel-plastic composite pipe is in close fit with the bend in the radial direction, fitting gaps are avoided, and the strength of welding connection is improved.
Description
Technical field
The utility model relates to a kind of composite metal plastic pipe, relates in particular to the curved composite metal plastic pipe that connects the outer silk of formula band down part.
Background technique
Composite metal plastic pipe forms steel-plastic composite pipe and is connected and composed by joint by composite steel tube in the middle of plastic tube, because the steel pipe in tubing mesosphere is airtight, so this Steel-plastic pipeline has the effect of resistance oxygen simultaneously, can be directly used in direct drinking water project, and its internal and external layer is plastic material, there is extraordinary corrosion resistance.So good performance, make the purposes of composite metal plastic pipe very extensive, oil, natural gas transport, and the work pipes for mining, water drinking tube, the figure of this pipe all can be seen in the various fields of waste pipe etc.The current metallic character that is connected the general using steel pipe of its joint of composite metal plastic pipe and steel-plastic composite pipe, the technological deficiency such as by electromagnetic welding, although this kind of welding mode welding effect is better, also have that the welding end is overflowed, local hole, join strength are poor.As the outer silk of technical order down part, be to be with externally threaded down part.
Chinese invention patent number of patent application 201010188512.7 discloses a kind of electromagnetic inductive welding method of steel-plastic compound pipe, it first inserts steel-plastic composite pipe in the birdsmouth of pipe fitting, with electromagnetic induction heater, the steel pipe layer of the steel-plastic composite pipe of plugging position is carried out afterwards the plastics of electromagnetic induction heating melting steel pipe layer both sides, the last cooling welding that realizes steel-plastic composite pipe and pipe fitting.The method of the technological deficiencies such as this kind of welding process do not propose how to solve that above-mentioned welding end is overflowed, local hole, join strength are poor.
Summary of the invention
The utility model provides the smooth welding hole attractive in appearance, inner of a kind of steel-plastic composite pipe and joint welding end few, the curved composite metal plastic pipe that connects the outer silk of formula band down part that join strength is good.
A kind of curved composite metal plastic pipe that connects the outer silk of formula band down part, comprise bend pipe, bend pipe one end connects the steel-plastic composite pipe that is compounded with steel pipe, described bend pipe one end tube wall is provided with coaxial annular shrinkage pool, the annular shrinkage pool is embedded in steel-plastic composite pipe, and the externally threaded down part of bend pipe the other end injection moulding connecting band is convenient to connect other pipelines.This kind is by the annular shrinkage pool coaxial with the bend pipe tube wall, the embedded steel-plastic composite pipe that is connected, realize steel-plastic composite pipe radially with the closely cooperating of bend pipe, prevent and coordinate space, improve the intensity that welding connects, electromagnetic induction heater carries out the plastics of electromagnetic induction heating melting steel pipe both sides to the steel pipe of steel-plastic composite pipe, the last cooling welding that realizes steel-plastic composite pipe and bend pipe.Owing to first steel-plastic composite pipe being embedded in annular shrinkage pool, then to the connection part heat welded, easy to implement, manufacture.
The described annular shrinkage pool outside is provided with the stuffing box gland of socket steel-plastic composite pipe, and stuffing box gland, bend pipe, the welding of steel-plastic composite pipe three mutual electromagnetic have effectively been avoided overflowing of molten plastic in the steel-plastic composite pipe by the stuffing box gland structure, have improved the aesthetics of product.Described annular shrinkage pool is that the conical surface is connected with the stuffing box gland junction surface, the junction surface end is provided with bending, annular shrinkage pool and stuffing box gland are fastened and connected mutually in bending place, this kind of conical surface linkage structure increased greatly and has been in contact with one another area, improve and connect fastness, the technological scheme mutually be fastened and connected in bending place on the other hand makes the relative steel-plastic composite pipe of stuffing box gland and bend pipe have an inside tightening force, has increased the compactness in the fusion process, prevents the technological deficiencies such as welding pore.
On described bend pipe body, corresponding steel-plastic composite pipe embeds annular shrinkage pool and partly is provided with more than one exhaust port, is beneficial to discharge the plastics that impact connects the gas of fastness or holds melting.
The utility model is by the annular shrinkage pool coaxial with the bend pipe tube wall, the embedded steel-plastic composite pipe that is connected, realize steel-plastic composite pipe radially with the closely cooperating of bend pipe, prevent and coordinate space, improve the intensity that welding connects.
The accompanying drawing explanation
Be illustrated in figure 1 the curved composite metal plastic pipe master who connects the outer silk of formula band down part of the utility model and look the broken section structural representation.
Embodiment
A kind of curved composite metal plastic pipe that connects the outer silk of formula band down part as shown in Figure 1, comprise bend pipe 1, bend pipe 1 one ends connect the steel-plastic composite pipe 2 that is compounded with steel pipe 4, bend pipe 1 one end tube walls are provided with coaxial annular shrinkage pool, the annular shrinkage pool is embedded in steel-plastic composite pipe 2, the externally threaded down part 6 of bend pipe 1 the other end injection moulding connecting band.The annular shrinkage pool outside is provided with the stuffing box gland 3 of socket steel-plastic composite pipe 2, stuffing box gland 3, bend pipe 1, steel-plastic composite pipe 2 three's mutual electromagnetic weldings.On bend pipe 1 body, corresponding steel-plastic composite pipe 2 embeds annular shrinkage pool and partly is provided with more than one exhaust port 5.
As the preferred annular shrinkage pool of structure and stuffing box gland 3 junction surfaces, be that the conical surface is connected, the junction surface end is provided with bending, and annular shrinkage pool and stuffing box gland 3 are fastened and connected mutually in bending place.
Quantity or arrangement as exhaust port 5 can axially or radially all be uniformly distributed 2 or 4 or 6 or 8 along bend pipe 1 as required.
Claims (4)
1. a curved composite metal plastic pipe that connects the outer silk of formula band down part, comprise bend pipe (1), bend pipe (1) one end connects the steel-plastic composite pipe (2) that is compounded with steel pipe (4), it is characterized in that: described bend pipe (1) one end tube wall is provided with coaxial annular shrinkage pool, the annular shrinkage pool is embedded in steel-plastic composite pipe (2), bend pipe (1) the other end injection moulding externally threaded down part of connecting band (6).
2. the curved composite metal plastic pipe that connects the outer silk of formula band down part as claimed in claim 1, it is characterized in that: the described annular shrinkage pool outside is provided with the stuffing box gland (3) of socket steel-plastic composite pipe (2), stuffing box gland (3), bend pipe (1), the welding of steel-plastic composite pipe (2) three's mutual electromagnetic.
3. the curved composite metal plastic pipe that connects the outer silk of formula band down part as claimed in claim 2, it is characterized in that: described annular shrinkage pool is that the conical surface is connected with stuffing box gland (3) junction surface, the junction surface end is provided with bending, and annular shrinkage pool and stuffing box gland (3) are fastened and connected mutually in bending place.
4. the curved composite metal plastic pipe that connects the outer silk of formula band down part as claimed in claim 1, it is characterized in that: on described bend pipe (1) body, corresponding steel-plastic composite pipe (2) embeds annular shrinkage pool and partly is provided with more than one exhaust port (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220720153 CN202955393U (en) | 2012-12-05 | 2012-12-05 | Bending-connection steel-plastic composite pipe with external thread insert |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220720153 CN202955393U (en) | 2012-12-05 | 2012-12-05 | Bending-connection steel-plastic composite pipe with external thread insert |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202955393U true CN202955393U (en) | 2013-05-29 |
Family
ID=48460965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220720153 Expired - Fee Related CN202955393U (en) | 2012-12-05 | 2012-12-05 | Bending-connection steel-plastic composite pipe with external thread insert |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202955393U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287094A (en) * | 2016-09-10 | 2017-01-04 | 王泽宇 | Electromagnetic induction internal-expansion type abundant hot-melt adhesive paste pipeline |
-
2012
- 2012-12-05 CN CN 201220720153 patent/CN202955393U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287094A (en) * | 2016-09-10 | 2017-01-04 | 王泽宇 | Electromagnetic induction internal-expansion type abundant hot-melt adhesive paste pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130529 Termination date: 20131205 |