CN109114322A - A kind of pipe fitting - Google Patents
A kind of pipe fitting Download PDFInfo
- Publication number
- CN109114322A CN109114322A CN201811144010.7A CN201811144010A CN109114322A CN 109114322 A CN109114322 A CN 109114322A CN 201811144010 A CN201811144010 A CN 201811144010A CN 109114322 A CN109114322 A CN 109114322A
- Authority
- CN
- China
- Prior art keywords
- tube body
- tightening nut
- mating surface
- fitting
- pipe fitting
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
- F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Pressure Members (AREA)
Abstract
Present invention discloses a kind of pipe fittings, including fitting body (10), tube body (30) and the tightening nut (50) being sheathed on the tube body (30), the fitting body (10) is provided with the first mating surface (13), the tube body (30) is provided with the second mating surface (32) with first mating surface (13) cooperation, the tightening nut (50) connects and tenses the fitting body (10) and tube body (30), the tube body (30) is provided with the shoulder (34) of the annular of evagination, the tightening nut (50) is provided with the inner ring (52) of convex, the pipe fitting further includes the elastic sealing element (70) being arranged between the shoulder (34) and the inner ring (52).Pipe fitting of the invention can reinforce being engaged between tube body and fitting body by the way that elastic sealing element, the restoring force of elastic sealing element are arranged between tightening nut and tube body, and leakproofness is more preferably.
Description
Technical field
The present invention relates to a kind of pipe fittings.
Background technique
Pipe fitting is connecting line or the part by pipeline on Hydraulic Elements in hydraulic system, is widely used in liquid
In pressure system, hydraulic coupler often mainly has flat seal and conical surface seal with seal form.Fig. 1 shows the prior art
The common pipe fitting of middle one kind comprising fitting body 10, tube body 30 and tightening nut 100, tightening nut 100 make fitting body 10
It is mutually pushed against with tube body 30, completes the connection of fitting body 10 and tube body 30, however in use for some time or vibrate
Afterwards, tightening nut 100, which is easy to happen, loosens, and causes poorly sealed and reveals.
Summary of the invention
It is an object of the invention in view of the above-mentioned drawbacks in the prior art, provide a kind of pipe fitting of better tightness,
Its nut is not easy to loosen.
For achieving the above object, present invention employs following technical solutions: a kind of pipe fitting, including fitting body, pipe
Body and the tightening nut being sheathed on the tube body, the fitting body are provided with the first mating surface, and the tube body is provided with and institute
The second mating surface of the first mating surface cooperation is stated, the tightening nut connects and tense the fitting body and tube body, the tube body
It is provided with the shoulder of the annular of evagination, the tightening nut is provided with the inner ring of convex, and the pipe fitting further includes being arranged in institute
State the elastic sealing element between shoulder and the inner ring.
In addition, the present invention also proposes following attached technical scheme:
The tube body further includes the pipe portion that diameter is less than the shoulder, and the inner ring and the pipe portion cooperate.
The elastic sealing element is sealing ring.
The elastic sealing element material is rubber.
The tube body is provided with stage portion of the diameter between the pipe portion and the shoulder, and the stage portion abuts institute
Shoulder setting is stated, the tightening nut is provided with the protrusion with stage portion cooperation.
First mating surface and second mating surface are the conical surface.
Connector external surface is provided with fastening thread, and the tightening nut is provided with the interior spiral shell with fastening thread cooperation
Line.
Compared with the prior art, the present invention has the advantages that pipe fitting of the invention by tightening nut and tube body it
Between elastic sealing element is set, the restoring force of elastic sealing element can reinforce being engaged between tube body and fitting body, leakproofness
More preferably；And when revealing generation, elastic sealing element can also borrow fluid pressure to reinforce the extruding force between tube body and fitting body, enhancing
Leakproofness.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of pipe fitting in the prior art.
Fig. 2 is the structural schematic diagram of pipe fitting in the present invention.
Fig. 3 is the structural schematic diagram of center tap body of the present invention.
Fig. 4 is the structural schematic diagram of middle tube body and tightening nut of the present invention.
Fig. 5 is the schematic diagram after elastic seal ring is squeezed and deformed by fluid pressure in the present invention.
Fig. 6 is the cooperation schematic diagram of stage portion and protrusion in the present invention.
Specific embodiment
In conjunction with the preferred embodiment and its attached drawing is further non-limitingly described in detail technical solution of the present invention.
As shown in Figures 2 to 4, corresponding to a kind of pipe fitting of preferred embodiment of the present invention comprising fitting body 10, tube body
30, tightening nut 50 and elastic sealing element 70.
As shown in figure 3,10 one end of fitting body is provided with the pipe screw thread 11 connecting with metal tube (not shown), there is section at middle part
Hexagonal fastening position 12 helps to load and unload when installing the pipe fitting using the tools of grade clamping fastening position 12 living of pulling；
Fitting body 10 further includes that the first mating surface 13 of its other end is arranged in and is arranged in the first mating surface 13 and secure component 12
Between fastening thread 14.
As shown in figure 4, tube body 30 includes pipe portion 31 and the annular shoulder 34 that 31 one end evagination of pipe portion is arranged in, and it is somebody's turn to do
End is additionally provided with the second mating surface 32 matched with the first mating surface 13.First mating surface 13 and the second mating surface 32 can be
Mutually matched perpendicular is also possible to such as the conical surface matched in the present embodiment.
As shown in figure 4, tightening nut 50 is set on tube body 30, inner surface is provided with to be matched with fastening thread 14
Internal screw thread 51 and inwardly projecting inner ring 52.The outer surface of preferred inner ring 52 and pipe portion 31 cooperates.
Elastic sealing element 70 is arranged between tightening nut 50 and tube body 30, specific setting shoulder 34 and inner ring 52 it
Between.Elastic sealing element 70 can be common sealing ring, and material is preferably rubber.
After the first, second mating surface 13,32 is in contact, turn tightening nut 50 makes tightening nut 50 towards fitting body
10 is mobile, and inner ring 52 will oppress elastic sealing element 70, and deformation occurs, and to generate between the first, second mating surface 13,32
Extruding force.After being installed, the elastic restoring force of elastic sealing element 70 persistently can apply pressure, shoulder to inner ring 52 and shoulder 34
34 will be by thrust to the left.And inner ring 52 will receive power to the right, and the power to the right can further be conducted to fitting body 10,
So that fitting body 10 by power to the right, cooperates more secured between such first, second mating surface 13,32.Moreover, internal screw thread
It also will be more firm persistently by the elastic restoring force, so that tightening nut 50 is not easy to loosen between 51 and fastening thread 14.
In addition, if certain leakage occurs between the first, second mating surface 13,32, as shown in figure 5, liquid will be filled with
Gap between tightening nut 50 and fitting body 10, tube body 30, and the upper surface of elastic sealing element 70 is squeezed, so that elastic packing
Deformation occurs for part 70, is pushed against between shoulder 34, pipe portion 31 and inner ring 52, reinforces sealing effect；Further, by liquid
Pressure F1, elastic sealing element 70 will apply respectively bigger power F2 and F3 to shoulder 34 and inner ring 52, to increase first, second
Extruding force between mating surface 13,32 enhances leakproofness.(Fig. 5 small arrow shows the general direction of power).
As shown in fig. 6, extruding force is excessive and squeeze bad elastic sealing element 70 when installing tightening nut 50 in order to prevent, in pipe portion
The stage portion 33 against shoulder 34 is provided on 31, the diameter of stage portion 33 is between pipe portion 31 and shoulder 34；Tightening nut
50 are provided with the protrusion 53 close to inner ring 52 and with the cooperation of stage portion 33；When inner ring 52 and stage portion 33 offset, 53 He of protrusion
The distance between shoulder 34 is slightly less than the cross-sectional width of elastic sealing element 70, so that elastic sealing element 70 is squeezed by a degree of
Pressure, without being damaged.
Pipe fitting of the invention between tightening nut and tube body by being arranged elastic sealing element, the recovery of elastic sealing element
Power can reinforce being engaged between tube body and fitting body, and leakproofness is more preferably；And when revealing generation, elastic sealing element can also
Reinforce the extruding force between tube body and fitting body by means of fluid pressure, enhances leakproofness.
It is pointed out that the technical concepts and features of above-mentioned preferred embodiment only to illustrate the invention, its object is to
Those skilled in the art can understand the contents of the present invention and implements accordingly, and protection of the invention can not be limited with this
Range.Any equivalent change or modification in accordance with the spirit of the invention should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of pipe fitting, including fitting body (10), tube body (30) and the tightening nut (50) being sheathed on the tube body (30),
The fitting body (10) is provided with the first mating surface (13), and the tube body (30) is provided with to be cooperated with first mating surface (13)
The second mating surface (32), the tightening nut (50), which connects, simultaneously tenses the fitting body (10) and tube body (30), and feature exists
In: the tube body (30) is provided with the shoulder (34) of the annular of evagination, and the tightening nut (50) is provided with the inner ring of convex
(52), the pipe fitting further includes the elastic sealing element (70) being arranged between the shoulder (34) and the inner ring (52).
2. according to pipe fitting described in claim 1, it is characterised in that: the tube body (30) further includes that diameter is less than the shoulder
(34) pipe portion (31), the inner ring (52) and the pipe portion (31) cooperate.
3. according to pipe fitting described in claim 1, it is characterised in that: the elastic sealing element (70) is sealing ring.
4. according to pipe fitting described in claim 1, it is characterised in that: elastic sealing element (70) material is rubber.
5. according to pipe fitting described in claim 1, it is characterised in that: the tube body (30) is provided with diameter between the pipe portion
(31) stage portion (33) between the shoulder (34), the stage portion (33) are arranged against the shoulder (34), the rotation
Tight nut (50) is provided with the protrusion (53) with the stage portion (33) cooperation.
6. according to pipe fitting described in claim 1, it is characterised in that: first mating surface (13) and second mating surface
It (32) is the conical surface.
7. according to pipe fitting described in claim 1, it is characterised in that: fitting body (10) outer surface is provided with fastening thread
(14), the tightening nut (50) is provided with the internal screw thread with the fastening thread (14) cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811144010.7A CN109114322B (en) | 2018-09-28 | 2018-09-28 | Pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811144010.7A CN109114322B (en) | 2018-09-28 | 2018-09-28 | Pipe joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109114322A true CN109114322A (en) | 2019-01-01 |
| CN109114322B CN109114322B (en) | 2020-12-25 |
Family
ID=64857172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811144010.7A Active CN109114322B (en) | 2018-09-28 | 2018-09-28 | Pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109114322B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285276A (en) * | 2019-07-08 | 2019-09-27 | 珠海格力智能装备有限公司 | Joint assembly and pipeline structure with it |
| CN110925504A (en) * | 2019-11-29 | 2020-03-27 | 嘉兴一达管件制造有限公司 | Taper sealing pipe joint for excavator |
| CN115163959A (en) * | 2022-07-08 | 2022-10-11 | 上海至纯精密制造有限公司 | Ultrapure PFA pipeline connecting device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3446504C1 (en) * | 1984-12-20 | 1986-05-15 | Jean Walterscheid Gmbh, 5204 Lohmar | Clamping-sealing ring |
| DE19511063A1 (en) * | 1994-05-07 | 1995-11-09 | Walterscheid Gmbh Jean | Pipe with a connection section for a pipe connection and method for producing the same |
| CN2271200Y (en) * | 1996-09-18 | 1997-12-24 | 陆朝强 | Internal spring type sealing joint |
| EP1568929A1 (en) * | 2004-02-25 | 2005-08-31 | KHS Maschinen- und Anlagenbau Aktiengesellschaft | Threaded pipe coupling |
| CN101093039A (en) * | 2007-07-12 | 2007-12-26 | 冯云静 | Connection structure for metal tube with single sidestep |
| CN203463833U (en) * | 2013-09-27 | 2014-03-05 | 湖北航天技术研究院总体设计所 | Sealing assembly for butt-joint of high-temperature high-pressure gas pipelines |
| CN105508759A (en) * | 2016-01-29 | 2016-04-20 | 成都市天仁自动化科技有限公司 | Soft/hard-seal-combined cutting-sleeve pipeline joint |
-
2018
- 2018-09-28 CN CN201811144010.7A patent/CN109114322B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3446504C1 (en) * | 1984-12-20 | 1986-05-15 | Jean Walterscheid Gmbh, 5204 Lohmar | Clamping-sealing ring |
| DE19511063A1 (en) * | 1994-05-07 | 1995-11-09 | Walterscheid Gmbh Jean | Pipe with a connection section for a pipe connection and method for producing the same |
| CN2271200Y (en) * | 1996-09-18 | 1997-12-24 | 陆朝强 | Internal spring type sealing joint |
| EP1568929A1 (en) * | 2004-02-25 | 2005-08-31 | KHS Maschinen- und Anlagenbau Aktiengesellschaft | Threaded pipe coupling |
| CN101093039A (en) * | 2007-07-12 | 2007-12-26 | 冯云静 | Connection structure for metal tube with single sidestep |
| CN203463833U (en) * | 2013-09-27 | 2014-03-05 | 湖北航天技术研究院总体设计所 | Sealing assembly for butt-joint of high-temperature high-pressure gas pipelines |
| CN105508759A (en) * | 2016-01-29 | 2016-04-20 | 成都市天仁自动化科技有限公司 | Soft/hard-seal-combined cutting-sleeve pipeline joint |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285276A (en) * | 2019-07-08 | 2019-09-27 | 珠海格力智能装备有限公司 | Joint assembly and pipeline structure with it |
| CN110925504A (en) * | 2019-11-29 | 2020-03-27 | 嘉兴一达管件制造有限公司 | Taper sealing pipe joint for excavator |
| CN115163959A (en) * | 2022-07-08 | 2022-10-11 | 上海至纯精密制造有限公司 | Ultrapure PFA pipeline connecting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109114322B (en) | 2020-12-25 |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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| GR01 | Patent grant |