CN2320867Y - Pipe joint - Google Patents
Pipe joint Download PDFInfo
- Publication number
- CN2320867Y CN2320867Y CN 97205471 CN97205471U CN2320867Y CN 2320867 Y CN2320867 Y CN 2320867Y CN 97205471 CN97205471 CN 97205471 CN 97205471 U CN97205471 U CN 97205471U CN 2320867 Y CN2320867 Y CN 2320867Y
- Authority
- CN
- China
- Prior art keywords
- pipe joint
- pipe
- thread bush
- utility
- model
- 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
Links
- 239000003566 sealing material Substances 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 239000012781 shape memory material Substances 0.000 claims description 2
- 239000000835 fiber Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010622 cold drawing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Joints Allowing Movement (AREA)
Abstract
A pipe joint comprises a pipe joint body and a connected pipe, and is characterized in that a threaded sleeve provided with a standard external thread is fixed on a pipe head of the connected pipe, and the pipe joint body is screwed on the threaded sleeve. The utility model has the characteristics of simple structure, low cost etc, moreover the utility model discloses can be under the condition of not handling the pipe end, various pipeline components and parts of convenient connection.
Description
The utility model relates to a kind of pipe joint, belongs to the link class.
Pipe joint is a kind of link that is widely used between pipeline, valve, threeway, the elbow, existing pipe joint has four types at present: first kind is need be at the pipe end mantle fiber, link to each other with pipe joint by pipe thread, thereby reach the purpose that connects pipe, this also is to use the most general type at present, the shortcoming of this pipe joint is to need at the construction field (site) the pipe end mantle fiber, complicated operation, and labor intensity is big.Second kind is Bite type fittings, as described in " Machine Design is in volume " revision second edition volume two chapter 8 of Chemical Industry Press's publication, this pipe joint is widely used in the hydraulic system of machinery equipment, its shortcoming is to connect cold drawing steel tube, and cutting ferrule accuracy of manufacturing height, using scope is limited.The principle of the third pipe joint is to utilize the mobile conical surface or inclined-plane, and come clamping tube by the distortion of elastic element, Here it is more disclosed utility model patents of China's patent documentation are as described in 91209789.2,91227797.1,92206304.4,92212877.4, these pipe joints mostly owing to complex structure, are difficult to carry out.The 4th kind is the pipe joint that adopts memory alloy material to make, and as described in China's utility model patent 91228380.7 and 92200782.9, the shortcoming of this pipe joint is cost height, dismounting inconvenience, thereby influence is used.And back three kinds of pipe joints common shortcoming is arranged is exactly all can not be connected with a large amount of various valves that use, elbow, threeway, flowmeter etc. in the reality, because not adopting, these three kinds of pipe joints are not threaded, and the interface of pipeline components and parts such as valve, elbow, threeway, flowmeter all is a standard pipe thread, and this also makes these three kinds of pipe joints can not large-scale popularization.
The purpose of this utility model just provides a kind of improved pipe joint to overcome the deficiency of prior art.
The purpose of this utility model is achieved in that a kind of pipe joint, comprises union body and connected tube, it is characterized in that being fixed with on the tube head of connected tube the externally threaded thread bush of the standard of being provided with, and union body is rotatably connected on the thread bush.
Described pipe joint is characterized in that thread bush made by shape-memory material, is especially made by heat-shrinkage material.
Described pipe joint is characterized in that between thread bush and connected tube sealing material being arranged.
Said structure of the present utility model makes it have characteristics such as simple in structure, with low cost, and the utility model can connect various pipeline components and parts easily under the situation of not handling pipe end.
Below by embodiment, in conjunction with the accompanying drawings the utility model is further described.
Fig. 1 is a kind of example structure schematic representation of the present utility model.
Among the figure: 1 is that union body, 2 is that thread bush, 3 is that sealing material, 4 is connected tube.
In the present embodiment: twine sealing material 3 in connected tube 4 peripheries earlier, then thread bush 2 is enclosed within on sealing material 3 and the connected tube 4, double thread cover 2 heating again, because thread bush 2 is to be made by the thermal shrinkage polyethylene, the aftershrinkage so be heated, tightly twining connected tube 4, thereby form an integral body.During connection, connected tube 4 is connected with the standard female of union body 1 by the standard external of the periphery of thread bush 2, thereby has realized connection procedure.Can be connected with the internal thread interface of union body 1 by the outside thread interface of self in the pipeline, perhaps adopt present widely used pipeline fittings " interior outer nut " transition to connect with components and parts such as valve, flowmeters.
Because thermal shrinkage polyethylene thread bush 2 has extremely strong contraction and holds characteristics such as power, excellent acid alkalescence and weathering resistance tightly, so can guarantee the reliability of pipe-line system work.
Claims (3)
1, a kind of pipe joint comprises union body and connected tube, it is characterized in that being fixed with on the tube head of connected tube the externally threaded thread bush of the standard of being provided with, and union body is rotatably connected on the thread bush.
2, pipe joint as claimed in claim 1 is characterized in that thread bush made by shape-memory material, is especially made by the thermal shrinkage polyethylene.
3, pipe joint as claimed in claim 1 is characterized in that between thread bush and connected tube sealing material being arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97205471 CN2320867Y (en) | 1997-11-20 | 1997-11-20 | Pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97205471 CN2320867Y (en) | 1997-11-20 | 1997-11-20 | Pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2320867Y true CN2320867Y (en) | 1999-05-26 |
Family
ID=33925688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97205471 Expired - Fee Related CN2320867Y (en) | 1997-11-20 | 1997-11-20 | Pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2320867Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909937A (en) * | 2012-10-19 | 2013-02-06 | 合肥工业大学 | Thermo-plastic hot-melt-adhesive active disassembling structure and disassembling method |
| CN105546237A (en) * | 2014-10-31 | 2016-05-04 | 丹阳市腾辉液压机械有限公司 | Diversified hydraulic joint |
| CN109253914A (en) * | 2018-07-24 | 2019-01-22 | 中国石油天然气集团有限公司 | A kind of threaded connection carrying sealing device for the full-scale evaluation test of tubing |
-
1997
- 1997-11-20 CN CN 97205471 patent/CN2320867Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909937A (en) * | 2012-10-19 | 2013-02-06 | 合肥工业大学 | Thermo-plastic hot-melt-adhesive active disassembling structure and disassembling method |
| CN105546237A (en) * | 2014-10-31 | 2016-05-04 | 丹阳市腾辉液压机械有限公司 | Diversified hydraulic joint |
| CN109253914A (en) * | 2018-07-24 | 2019-01-22 | 中国石油天然气集团有限公司 | A kind of threaded connection carrying sealing device for the full-scale evaluation test of tubing |
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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 |