CN2510711Y - Self-tapping threaded pipe joint for inner plastic-walled pipe - Google Patents
Self-tapping threaded pipe joint for inner plastic-walled pipe Download PDFInfo
- Publication number
- CN2510711Y CN2510711Y CN 01274480 CN01274480U CN2510711Y CN 2510711 Y CN2510711 Y CN 2510711Y CN 01274480 CN01274480 CN 01274480 CN 01274480 U CN01274480 U CN 01274480U CN 2510711 Y CN2510711 Y CN 2510711Y
- Authority
- CN
- China
- Prior art keywords
- pipe
- plastic
- joint
- stiffening ring
- connection part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Rigid Pipes And Flexible Pipes (AREA)
Abstract
A self-tapping thread pipe joint for plastic inner wall pipes includes a joint body with thread, at least one end of the joint body is provided with a connection part with thread, the connection part shows conical in shape, the external circumference of the connection part is provided with a stiffening ring whose inner diameter is more than the external diameter of the connection part, the inner side wall of the stiffening ring is provided with convex teeth, the directions of the all convex teeth are the same, when used the stiffening ring and the joint body will be affected by two wrenches, then the joint body is wrung into the plastic substrate of pipes, the pipe joint of the utility model adopts a self-tapping thread structure, so the utility model is provided with better seal performance, high-pressure high-temperature resistance, anti-drawing, anti-bending and anti-distortion, low cost manufacture, and strong installation reliability, which not only can be used in the connection of aluminum-plastic compound pipes, but also can be used in the connections of cross-linked polyethylene pipe, steel-plastic composite pipe, polypropylene pipe and other plastic and plastic composite pipes.
Description
Technical field:
The utility model relates to a kind of pipeline parts, especially a kind of connecting element of pipeline, particularly a kind of pipe joint that adopts the conical surface to be threaded, a kind of specifically Thread Forming TF pipe joint.
Background technique:
In the prior art, tubing such as aluminium-plastic composite pipe, crosslinked polyethylene pipe, steel-plastic composite pipe, polypropylene tube are widespread usage, wherein aluminium-plastic composite pipe have corrosion-resistant, high temperature resistant, high pressure resistant, antistatic, inner wall smooth, fluid resistance little, be difficult for incrustation, heat-insulation and heat-preservation, be difficult for embrittlement, long service life, advantages such as in light weight, convenient in carrying all have remarkable advantages than present widely used metal pipe and other plastic tubes at aspects such as mechanical property, chemical property, prices.In the prior art, the pipe fitting Placement that is applied in the pipeline that aluminium-plastic composite pipe forms has Placements such as FERRULETYPE, compression type, clamp-press type, clamp band type, spigot and socket type.
Summary of the invention:
Technical problem to be solved in the utility model is: in the prior art, adopt Placements such as FERRULETYPE, compression type, clamp-press type, clamp band type, spigot and socket type in the plastic-aluminum combined pipeline, because the material behavior of aluminium-plastic composite pipe, the barotolerance and the heat-resisting quantity of pipe coupling are relatively poor, simultaneously tension pull out force, ability counter-bending and distortion are lower, manufacture cost is big, installation reliability is difficult to hold, influenced the normal use of plastic pipe, the pipe coupling that has can only be used for exposed conduit and lay, can not be used for hidden pipe and lay, the phenomenon of plastic pipe joint seepage often takes place.The utility model provides a kind of Thread Forming TF pipe joint that is applied to plastic liner tubing for the technological scheme that above-mentioned technical problem adopted that solves in the prior art, described this Thread Forming TF pipe joint, comprise that is provided with a threaded fittings body, wherein, the described threaded fittings body inside that is provided with is the cylindrical channel of a both ends open, it is the threaded joint of arranged outside that described fittings body has an end at least, described joint is coniform, excircle at described joint is provided with a stiffening ring, the internal diameter of described stiffening ring is greater than the external diameter of described joint, the madial wall of described stiffening ring is provided with double wedge, and the direction of all double wedges is identical.Working procedure of the present utility model is: the excircle that described stiffening ring is linked in tubing one end of required connection, described fittings body is screwed into the plastic substrate of described tubing one end, the Thread Forming TF in the described joint outside produces the screw thread alveolus of line in the shape of a spiral at pipe material inner wall, Thread Forming TF and screw thread alveolus are realized threaded closure, the expansion deformation that described this end of stiffening ring restriction tubing takes place, the double wedge of described stiffening ring inboard prevents the displacement of tubing at circumferencial direction simultaneously.The utility model and prior art contrast, because on pipe joint, adopted the Thread Forming TF structure, so sealability is better, and high pressure resistant high temperature, anti-pulling, counter-bending and distortion, low cost of manufacture, installation reliability is strong, not only can apply to aluminium-plastic composite pipe and connect, and also can apply to plastics such as crosslinked polyethylene pipe, steel-plastic composite pipe, polypropylene tube and be connected with compound plastic pipe.
Description of drawings: Fig. 1 is a kind of schematic representation that is applied to the Thread Forming TF pipe joint of plastic liner tubing of the utility model.Fig. 2 is the schematic representation of the stiffening ring in a kind of Thread Forming TF pipe joint that is applied to plastic liner tubing of the utility model.
Embodiment:
As shown in Figure 1, a kind of Thread Forming TF pipe joint that is applied to plastic liner tubing of the utility model, comprise that is provided with a threaded fittings body 1, wherein, it is described that threaded fittings body 1 inside is set is the cylindrical channel of a both ends open, it is the threaded joint 2 of arranged outside that described fittings body 1 has an end at least, described joint 2 is coniform, excircle at described joint 2 is provided with a stiffening ring 3, the internal diameter of described stiffening ring 3 is greater than the external diameter of described joint 2, as shown in Figure 2, the madial wall of described stiffening ring 3 is provided with at least two double wedges 4, and the direction of all double wedges 4 is identical.Working procedure of the present utility model is: the excircle that described stiffening ring 3 is linked in tubing 5 one ends of required connection, utilize two spanners to act on stiffening ring 3 respectively during use, fittings body 1, fittings body 1 is screwed into the plastic substrate of tubing 5, described fittings body 1 is screwed into the inboard of described tubing 5 one ends, the Thread Forming TF in described joint 2 outsides produces the screw thread alveolus of line in the shape of a spiral at pipe material inner wall, Thread Forming TF and screw thread alveolus are realized threaded closure, the expansion deformation that described stiffening ring 3 restriction tubing 5 these ends take place, the double wedge 4 of described stiffening ring 3 inboards prevents the displacement of tubing 5 at circumferencial direction simultaneously.
Claims (2)
1, a kind of Thread Forming TF pipe joint that is applied to plastic liner tubing, comprise that is provided with a threaded fittings body, it is characterized in that: it is the threaded joint of arranged outside that described fittings body has an end at least, described joint is coniform, excircle at described joint is provided with a stiffening ring, and the internal diameter of described stiffening ring is greater than the external diameter of described joint.
2, a kind of Thread Forming TF pipe joint that is applied to plastic liner tubing as claimed in claim 1, it is characterized in that: the madial wall of described stiffening ring is provided with double wedge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01274480 CN2510711Y (en) | 2001-12-27 | 2001-12-27 | Self-tapping threaded pipe joint for inner plastic-walled pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01274480 CN2510711Y (en) | 2001-12-27 | 2001-12-27 | Self-tapping threaded pipe joint for inner plastic-walled pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2510711Y true CN2510711Y (en) | 2002-09-11 |
Family
ID=33679149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01274480 Expired - Fee Related CN2510711Y (en) | 2001-12-27 | 2001-12-27 | Self-tapping threaded pipe joint for inner plastic-walled pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2510711Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100432519C (en) * | 2003-11-27 | 2008-11-12 | 乌波诺尔创新股份公司 | Pipe fitting |
| CN110332384A (en) * | 2019-07-20 | 2019-10-15 | 安徽安诺热能科技有限公司 | A kind of Sirting line type heating radiator domain-specific instant-plugging tapping screw thread attachment device |
-
2001
- 2001-12-27 CN CN 01274480 patent/CN2510711Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100432519C (en) * | 2003-11-27 | 2008-11-12 | 乌波诺尔创新股份公司 | Pipe fitting |
| CN110332384A (en) * | 2019-07-20 | 2019-10-15 | 安徽安诺热能科技有限公司 | A kind of Sirting line type heating radiator domain-specific instant-plugging tapping screw thread attachment device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |