CN1702364A - Pipe joint - Google Patents
Pipe joint Download PDFInfo
- Publication number
- CN1702364A CN1702364A CN 200510050289 CN200510050289A CN1702364A CN 1702364 A CN1702364 A CN 1702364A CN 200510050289 CN200510050289 CN 200510050289 CN 200510050289 A CN200510050289 A CN 200510050289A CN 1702364 A CN1702364 A CN 1702364A
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- CN
- China
- Prior art keywords
- cutting ferrule
- fittings body
- nut
- pipe
- pipe joint
- 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.)
- Pending
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- Joints With Pressure Members (AREA)
Abstract
This invention relates to a pipe joint, which comprises a hollow joint body and a cap nut, a pipe crossing the hollow of the joint and cap nut; between the pipe, joint and the cap nut there is a cutting sleeve, wherein the rear end of the sleeve is a pyramidal face corresponding with the cap nut, the front end is a cylinder whose diameter is not less than the taper hole of the joint body; on the front end of the sleeve has a step, and the nose angle of cutting sleeve inserts in the taper hole; the end-face of the cutting sleeve will deform and all enter into the taper hole on the extrusion pressure from the cap nut, until the front step contacts the taper hole. There is also a sealing ring in the end-face of the cutting sleeve, which can increase the reliability of sealing and avoid leaking.
Description
Technical field
The invention belongs to engineering machinery field, employed pipe joint when specifically a kind of connection oil pipe and tracheae.
Background technique
In automobile, boats and ships and engineering mechanical device, there be being connected of many oil pipes and tracheae.Mostly adopt fittings body and a nut of a hollow, pipe is set in the middle vacancy of fittings body and nut, between pipe and fittings body, nut, also has a cutting ferrule, and there is tilted conical surface at the two ends of cutting ferrule.When screwing nut, the tilted conical surface at corresponding tilted conical surface extruding cutting ferrule two ends is arranged on fittings body and the nut, cutting ferrule is deformed, play effect fixing and sealing.The cutting ferrule of prior art pipe joint owing to be steel reason the assembling and docking operation, perhaps repeatedly dismounting, the reliability of sealing is bad, leaks easily.
Summary of the invention
The objective of the invention is problem, design a kind of elastic packing, reliable sealing pipe joint at the existence of aforementioned tube joint.
The object of the present invention is achieved like this: pipe joint of the present invention comprises fittings body and nut of a hollow, pipe is set in the middle vacancy of fittings body and nut, at pipe and fittings body, between nut, also has a cutting ferrule, the rear end of cutting ferrule is the conical surface that matches with nut, the front end of cutting ferrule is the cylndrical surface that diameter is not less than the fittings body conical orifice, have lead angle, the front end of cutting ferrule has individual step, the front end lead angle of cutting ferrule is inserted the conical orifice of fittings body, under the effect of nut extruding force, and the end face generation deformation of the front end of cutting ferrule, all enter the cone shape hole of fittings body, contact with the conical orifice of fittings body until the front end step of cutting ferrule; The end face of above-mentioned cutting ferrule front end is provided with seal ring; Above-mentioned seal ring and cutting ferrule are a kind of linking body structures.
Pipe joint of the present invention, because the front end of cutting ferrule is inserted the conical orifice of fittings body, under the effect of nut extruding force, the end face generation deformation of the front end of cutting ferrule all enters the cone shape hole of fittings body, front end step until cutting ferrule contacts with the conical orifice of fittings body, the front end of cutting ferrule has definite amount of deformation, and the cutting ferrule front end is cut pipe under the effect of nut extruding force, and the end face of while at the front end of cutting ferrule also is provided with seal ring, improve the reliability of sealing, prevented leakage phenomenon.
Description of drawings
Fig. 1 is the mounting structure schematic representation of pipe joint of the present invention.
Fig. 2 is the structural representation of the cutting ferrule of pipe joint of the present invention.
Embodiment
The invention will be further described by embodiment below in conjunction with accompanying drawing:
As depicted in figs. 1 and 2, pipe joint of the present invention comprises fittings body 1 and nut 7 of a hollow, pipe 8 is set in the middle vacancy of fittings body 1 and nut 8, at pipe 8 and fittings body 1,7 on nut also has a cutting ferrule 5, the front end of cutting ferrule 5 is the cylndrical surface 3 that is not less than fittings body 1 conical orifice, have lead angle, the front end of cutting ferrule 5 has individual step 4, the rear end of cutting ferrule 5 is the conical surfaces 6 that match with nut 7, the front end lead angle of cutting ferrule 5 is inserted the conical orifice of fittings body 1, under the effect of nut 7 extruding forces, deformation takes place in the end face 3 of the front end of cutting ferrule 5, all enter the cone shape hole of fittings body 1, contact with the conical orifice of fittings body 1 until the front end step 4 of cutting ferrule 5, the end face of above-mentioned cutting ferrule 5 front ends is provided with seal ring 2.
Claims (3)
1, a kind of pipe joint comprises the fittings body (1) and a nut (7) of a hollow, pipe (8) is set in the middle vacancy of fittings body (1) and nut (8), at pipe (8) and fittings body (1), also has a cutting ferrule (5) between nut (7), the rear end of cutting ferrule (5) is the conical surface (6) that matches with nut (7), the front end that it is characterized in that cutting ferrule (5) is for being not less than the cylndrical surface (3) of fittings body (1) conical orifice, have lead angle, the front end of cutting ferrule (5) has individual step (4), the front end lead angle of cutting ferrule (5) is inserted the conical orifice of fittings body (1), under the effect of nut (7) extruding force, deformation takes place in the end face (3) of the front end of cutting ferrule (5), all enter the cone shape hole of fittings body (1), contact with the conical orifice of fittings body (1) until the front end step (4) of cutting ferrule (5).
2, a kind of pipe joint according to claim 1 is characterized in that the end face of cutting ferrule (5) front end is provided with seal ring (2).
3, a kind of pipe joint according to claim 1 is characterized in that seal ring (2) and cutting ferrule (5) are a kind of linking body structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510050289 CN1702364A (en) | 2005-04-19 | 2005-04-19 | Pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510050289 CN1702364A (en) | 2005-04-19 | 2005-04-19 | Pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1702364A true CN1702364A (en) | 2005-11-30 |
Family
ID=35632260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510050289 Pending CN1702364A (en) | 2005-04-19 | 2005-04-19 | Pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1702364A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200461A (en) * | 2011-03-04 | 2011-09-28 | 上海盛迪传感技术有限公司 | Liquid level transmitter |
| CN103512702A (en) * | 2012-06-30 | 2014-01-15 | 美钻石油钻采系统(上海)有限公司 | Clamping sleeve type connector with internal damping device |
-
2005
- 2005-04-19 CN CN 200510050289 patent/CN1702364A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200461A (en) * | 2011-03-04 | 2011-09-28 | 上海盛迪传感技术有限公司 | Liquid level transmitter |
| CN103512702A (en) * | 2012-06-30 | 2014-01-15 | 美钻石油钻采系统(上海)有限公司 | Clamping sleeve type connector with internal damping device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |