CN108302202B - Direction-adjustable joint and sealing device thereof - Google Patents
Direction-adjustable joint and sealing device thereof Download PDFInfo
- Publication number
- CN108302202B CN108302202B CN201810205344.4A CN201810205344A CN108302202B CN 108302202 B CN108302202 B CN 108302202B CN 201810205344 A CN201810205344 A CN 201810205344A CN 108302202 B CN108302202 B CN 108302202B
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- China
- Prior art keywords
- sealing
- sealing ring
- joint
- ring
- adjustable
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Classifications
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- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
Abstract
The invention discloses a direction-adjustable joint and a sealing device thereof, and belongs to the technical field of engineering machinery. The sealing device mainly comprises a connector body, wherein the connector body is matched with a sealing oil port, a locking nut is arranged on the connector body, and a sealing device for the adjustable direction connector is arranged below the locking nut; the sealing device for the adjustable joint comprises an annular DO sealing ring, wherein the cross section of the DO sealing ring is a right trapezoid with a long bottom edge and a bevel edge which are provided with round corners in a pouring mode. The invention realizes the sealing of the adjustable direction joint to the plane oil port in the hydraulic system below 40 MPa. The invention is mainly used for sealing the plane oil port.
Description
Technical Field
The invention belongs to the technical field of engineering machinery, and particularly relates to an adjustable joint and a sealing device thereof.
Background
The hydraulic component oil port generally has two structures, namely an SAE flange oil port and a thread oil port. The components of the SAE flange oil port, the pipelines and the components to be connected need larger space. The threaded oil port is divided into two structures, namely an oil port of an angle sealing structure and an oil port of a plane sealing structure. The angle-sealed oil ports comprise ISO6149, JISB 2351 English pipe thread oil ports and ISO 11926-1 American thread oil ports, and the oil ports have the advantages of good sealing performance and the disadvantages that: a special cutter is needed, and the processing cost is too high; the angle sealing oil ports are sealed by O-shaped rings. The plane sealing threaded oil port is provided with a metric plane sealing oil port of ISO 9974-1 and a plane sealing oil port of DIN3852, and the plane sealing threaded oil port has the advantages that a special cutter is not needed, a plane is countersunk at the upper end of the thread, and the sealing requirement of a connecting element is increased and the sealing requirement of the element is higher. At present, an ED plane sealing ring and an O-shaped sealing ring are mainly adopted, and the O-shaped sealing ring seals a plane sealing oil port and is only suitable for a low-pressure system with a common joint below 16 MPa; when the sealing requirement on the element is high, the ED plane sealing ring is adopted for sealing. Meanwhile, a large space is required for the common joint, and the common joint cannot be suitable for a special narrow space. Because the O-shaped sealing ring is attached to the chamfer of the plane sealing threaded port, in a high-pressure hydraulic system of 16-40 MPa, the compressed O-shaped sealing ring can generate cutting risk, and meanwhile leakage or micro leakage can occur, so that the performance and reliability of a product are affected.
The adjustable direction joint can be used in a special narrow space, but in a hydraulic system of 16-40 MPa, the angle of the joint is adjusted by the adjustable direction joint through the lock nut, the support gasket below the lock nut is equivalent to the plane of the common joint, but a gap exists between the support gasket and the joint body, and the support gasket needs to move along with the movement of the nut. The ED plane sealing ring cannot seal the gap between the ED plane sealing ring and cannot play a role in sealing.
Disclosure of Invention
The invention aims to overcome the defects and provide an adjustable direction joint and a sealing device thereof, which realize the sealing of the adjustable direction joint to a plane oil port in a hydraulic system below 40 MPa.
The sealing device for the adjustable joint comprises an annular DO sealing ring, wherein the cross section of the DO sealing ring is a right trapezoid with a long bottom edge and a bevel edge rounded.
Further, the device also comprises a support ring, wherein the DO sealing ring is arranged in the support ring, and the vertical surface of the DO sealing ring is matched with the inner side of the support ring.
The adjustable direction connector comprises a connector body, wherein the connector body is matched with a sealing oil port, a locking nut is arranged on the connector body, and the sealing device for the adjustable direction connector is arranged below the locking nut.
Further, a supporting gasket is arranged between the locking nut and the sealing device for the adjustable joint.
Further, the long bottom edge of the DO sealing ring of the sealing device for the adjustable joint is matched with the supporting gasket.
Furthermore, the short bottom edge of the DO sealing ring of the sealing device for the adjustable joint is matched with the upper end face of the sealing oil port.
Compared with the prior art, the invention has the beneficial effects that:
1. the short bottom edge of the DO sealing ring is matched with the upper end face of the sealing oil port, so that the inside-out pressure sealing is realized; the round corners of the DO sealing ring realize the sealing of the gap between the supporting gasket and the joint body;
2. the round angle of the DO sealing ring is in line contact with the joint body, so that a gap between the support gasket and the joint can be sealed, and meanwhile, the DO sealing ring cannot be overturned, deformed or distorted to lose effectiveness when the locking nut and the support gasket are adjusted in position;
3. the DO sealing ring is not in contact with the chamfer or the corner of the thread, so that the problem that the sealing ring is crushed by the corner is avoided, the DO sealing ring is suitable for sealing a high-pressure hydraulic system below 40MPa, and can seal a metric plane sealing oil port of ISO 9974-1 and a plane sealing oil port of DIN 3852.
Drawings
FIG. 1 is a front view of a DO ring seal;
FIG. 2 is a top view of the DO-ring seal;
fig. 3 is a schematic structural view of the adjustable joint.
In the figure, a DO sealing ring is arranged at 1; 2. a long bottom edge; 3. a vertical plane; 4. a short bottom edge; 5. a beveled edge; 6. round corners; 7. a joint body; 8. A lock nut; 9. a support pad; 10. a support ring; 11. and (5) sealing the oil port.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1 and 2, the sealing device for the adjustable directional joint comprises an annular DO sealing ring 1, wherein the cross section of the DO sealing ring 1 is a right trapezoid with a long bottom edge 2 and a rounded corner 6 of a bevel edge 5.
As shown in fig. 3, the device further comprises a support ring 10, the DO sealing ring 1 is arranged in the support ring 10, and the vertical surface 3 of the DO sealing ring 1 is matched with the inner side of the support ring 10.
As shown in fig. 3, the adjustable direction joint comprises a joint body 7, wherein the joint body 7 is matched with a sealing oil port 11, a lock nut 8 is arranged on the joint body 7, and the sealing device for the adjustable direction joint is arranged below the lock nut 8; a supporting gasket 9 is arranged between the lock nut 8 and the sealing device for the adjustable joint; the long bottom edge 2 of the DO seal ring 1 is matched with the supporting gasket 9; the short bottom edge 4 of the DO seal ring 1 is matched with the upper end face of the seal oil port 11.
When the DO-ring seal is used, the short bottom edge 4 of the DO-ring seal 1 and the outer rectangular end formed by the vertical surface 3 seal the pressure from inside to outside. The high-pressure oil is permeated into the DO sealing ring 1 from the threads of the joint body 7, and the outer rectangular end of the DO sealing ring 1 is compressed to deform the DO sealing ring, so that the sealing effect is achieved, and the high-pressure oil is prevented from flowing out from the gap of the retaining ring.
One end of the round corner 6 of the DO seal ring 1 is used for sealing a gap between the joint body 7 and the supporting gasket 9. The high-pressure oil is permeated into the lower part of the DO sealing ring 1 through the threads of the joint body 7, the end face of the round corner 6 of the DO sealing ring 1 is deformed, and the gap between the joint body 7 and the supporting gasket 9 can be sealed. Because the inside of the DO sealing ring 1 is the round angle 6, the DO sealing ring belongs to a line contact structure, and the DO sealing ring 1 cannot be overturned, deformed or distorted to fail when the locking nut 8 and the supporting gasket 9 are used for adjusting positions.
Meanwhile, the round corners 6 of the DO sealing ring 1 are not in contact with the thread chamfer or the edge angle of the joint body 7, so that the problem that the DO sealing ring 1 is broken by the edge angle is avoided, and the DO sealing ring is suitable for sealing of a hydraulic system with high pressure. Therefore, the invention can seal the metric plane seal oil port of ISO 9974-1 or the plane seal oil port of DIN3852, and is suitable for high-pressure sealing below 40 MPa.
Claims (1)
1. The utility model provides an adjustable joint, includes joint body (7), and joint body (7) cooperates with sealed hydraulic fluid port (11), is equipped with lock nut (8), its characterized in that on joint body (7): the sealing device for the adjustable direction joint is arranged below the lock nut (8) and comprises an annular DO sealing ring (1), and the cross section of the DO sealing ring (1) is a right trapezoid with a long bottom edge (2) and a bevel edge (5) which are chamfered with round corners (6);
the DO sealing ring (1) is arranged in the supporting ring (10), and a vertical surface (3) of the DO sealing ring (1) is matched with the inner side of the supporting ring (10); a supporting gasket (9) is arranged between the lock nut (8) and the sealing device for the adjustable joint; the long bottom edge (2) of the DO sealing ring (1) of the sealing device for the adjustable joint is matched with the supporting gasket (9); the short bottom edge (4) of the DO sealing ring (1) of the sealing device for the adjustable joint is matched with the upper end face of the sealing oil port (11);
the high-pressure oil is permeated into the lower part of the DO sealing ring (1) through the threads of the joint body (7), and the clearance between the joint body (7) and the supporting gasket (9) is sealed after the end face of the round corner (6) of the DO sealing ring (1) is deformed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810205344.4A CN108302202B (en) | 2018-03-13 | 2018-03-13 | Direction-adjustable joint and sealing device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810205344.4A CN108302202B (en) | 2018-03-13 | 2018-03-13 | Direction-adjustable joint and sealing device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108302202A CN108302202A (en) | 2018-07-20 |
| CN108302202B true CN108302202B (en) | 2023-09-22 |
Family
ID=62849945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810205344.4A Active CN108302202B (en) | 2018-03-13 | 2018-03-13 | Direction-adjustable joint and sealing device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108302202B (en) |
Citations (19)
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|---|---|---|---|---|
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| US3891224A (en) * | 1974-03-20 | 1975-06-24 | Lok Corp A | Joint assembly for vertically aligned sectionalized manhole structures incorporating D-shaped gaskets |
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| EP0524049A1 (en) * | 1991-07-16 | 1993-01-20 | Centre Technique Industriel dit: INSTITUT TEXTILE DE FRANCE | Gasket with a filling of nonwoven and manufacturing process |
| RU94023914A (en) * | 1994-06-24 | 1996-06-20 | А.И. Бухтияров | Sealing arrangement |
| CN2670681Y (en) * | 2004-01-06 | 2005-01-12 | 中国石油天然气集团公司 | Direction-adjustable sealed joint |
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| CN201041867Y (en) * | 2007-01-29 | 2008-03-26 | 浙江天台永贵电器有限公司 | Connector sealing ring |
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| CN203926764U (en) * | 2014-06-20 | 2014-11-05 | 嘉兴职业技术学院 | A kind of seal ring |
| CN204327980U (en) * | 2014-12-16 | 2015-05-13 | 北京橡胶工业研究设计院 | The thermal strain oil sealing of adjustable radial power |
| CN106015602A (en) * | 2016-05-30 | 2016-10-12 | 沈阳大学 | Sealing ring for ore pulp check valve |
| CN205655024U (en) * | 2016-05-17 | 2016-10-19 | 爱美达（深圳）热能系统有限公司 | Sealing device of adjustable elbow direction among electron liquid cooling system |
| CN106678468A (en) * | 2017-02-06 | 2017-05-17 | 江阴市长龄机械制造有限公司 | Sealing structure of large operation machinery rotation joint |
| CN207989727U (en) * | 2018-03-13 | 2018-10-19 | 山东临工工程机械有限公司 | One kind can tuning connector and its sealing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080111318A1 (en) * | 2006-11-13 | 2008-05-15 | Yoshioki Tomoyasu | Perfect shaft seal |
-
2018
- 2018-03-13 CN CN201810205344.4A patent/CN108302202B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1275352A (en) * | 1969-03-10 | 1972-05-24 | Marco Turolla | Ring seal arrangement |
| US3891224A (en) * | 1974-03-20 | 1975-06-24 | Lok Corp A | Joint assembly for vertically aligned sectionalized manhole structures incorporating D-shaped gaskets |
| US4380342A (en) * | 1980-09-22 | 1983-04-19 | Vought Corporation | Fluid sealing devices |
| EP0524049A1 (en) * | 1991-07-16 | 1993-01-20 | Centre Technique Industriel dit: INSTITUT TEXTILE DE FRANCE | Gasket with a filling of nonwoven and manufacturing process |
| CN1071235A (en) * | 1991-07-16 | 1993-04-21 | 法国纺织研究院 | Stamping Steel Ribbon and manufacture method thereof with non-woven filler |
| RU94023914A (en) * | 1994-06-24 | 1996-06-20 | А.И. Бухтияров | Sealing arrangement |
| CN2670681Y (en) * | 2004-01-06 | 2005-01-12 | 中国石油天然气集团公司 | Direction-adjustable sealed joint |
| FR2874074A1 (en) * | 2004-08-06 | 2006-02-10 | Pfaudler Werke Gmbh | Seal for chamfered ends of tubular construction components, especially pipes, comprises elastomer seal element and thrust ring with angled sides |
| CN201041867Y (en) * | 2007-01-29 | 2008-03-26 | 浙江天台永贵电器有限公司 | Connector sealing ring |
| CN101240850A (en) * | 2007-02-07 | 2008-08-13 | 财团法人工业技术研究院 | Sealing structure and its spacer component |
| CN203115093U (en) * | 2009-05-08 | 2013-08-07 | Nok株式会社 | Water-proof structure for opening and closing part of equipment shell |
| CN202392741U (en) * | 2011-10-19 | 2012-08-22 | 北京瑞阳安科技术有限公司 | Seal structure of power cavity of anti-explosive LED (Light-Emitting Diode) illumination lamp |
| CN203374799U (en) * | 2013-07-01 | 2014-01-01 | 佛山市麦克罗美的滤芯设备制造有限公司 | Face-contact-type sealing ring |
| CN103791089A (en) * | 2014-01-22 | 2014-05-14 | 青岛恒基泰机电科技有限公司 | Steel tube end seal ring and sealing device |
| CN203926764U (en) * | 2014-06-20 | 2014-11-05 | 嘉兴职业技术学院 | A kind of seal ring |
| CN204327980U (en) * | 2014-12-16 | 2015-05-13 | 北京橡胶工业研究设计院 | The thermal strain oil sealing of adjustable radial power |
| CN205655024U (en) * | 2016-05-17 | 2016-10-19 | 爱美达（深圳）热能系统有限公司 | Sealing device of adjustable elbow direction among electron liquid cooling system |
| CN106015602A (en) * | 2016-05-30 | 2016-10-12 | 沈阳大学 | Sealing ring for ore pulp check valve |
| CN106678468A (en) * | 2017-02-06 | 2017-05-17 | 江阴市长龄机械制造有限公司 | Sealing structure of large operation machinery rotation joint |
| CN207989727U (en) * | 2018-03-13 | 2018-10-19 | 山东临工工程机械有限公司 | One kind can tuning connector and its sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108302202A (en) | 2018-07-20 |
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