CN103591295B - There is the movable sealing structure of bottom compression function - Google Patents
There is the movable sealing structure of bottom compression function Download PDFInfo
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- CN103591295B CN103591295B CN201310593716.2A CN201310593716A CN103591295B CN 103591295 B CN103591295 B CN 103591295B CN 201310593716 A CN201310593716 A CN 201310593716A CN 103591295 B CN103591295 B CN 103591295B
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- Prior art keywords
- seal ring
- wedge
- shaped rubber
- teflon seal
- teflon
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Abstract
The present invention relates to a kind of movable sealing structure with bottom compression function, this movable sealing structure includes a piston, teflon seal ring and wedge-shaped rubber circle, this piston is shaped with seal groove, suit teflon seal ring in this seal groove, its teflon seal ring outer radial integrally makes two symmetrical three horns for sealing, the compressive plane that cross section is del is radially inside integrally made at teflon seal ring, two wedge-shaped rubber circles it are symmetrically installed between bottom compressive plane and seal groove, this wedge-shaped rubber circle inclined-plane and compressive plane laminating, present configuration is simple, design science is reasonable, sealing compensation ability is strong, frictional force is less, good seal performance, long service life.
Description
Technical field
The invention belongs to movable sealing structure field, especially a kind of movable sealing structure with bottom compression function.
Background technology
Movable sealing mode is generally adopted between piston and cylinder body in hydraulic jack, movable sealing structure mainly includes teflon seal ring and wedge-shaped rubber circle, the effect reaching to seal is coordinated between them, but existing combination and teflon seal ring shape are constituted can not meet Technical Development Requirement, after wedge-shaped rubber circle body elastic deformation ability can weaken teflon seal ring absent compensation radial force after a long time use, it is difficult to be close to cylinder wall, it is easily caused leakage of oil, affect the sealing of whole hydraulic jack, furthermore teflon seal ring is close to cylinder wall and is connected, in relative motion, its frictional force being subject to is bigger, shorten the service life of teflon seal ring.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of movable sealing structure with bottom compression function, this movable sealing structure is simple, and design science is reasonable, and sealing compensation ability is strong, and frictional force is less, good seal performance, long service life.
This invention address that its technical problem is achieved through the following technical solutions:
A kind of movable sealing structure with bottom compression function, this movable sealing structure includes a piston, teflon seal ring and wedge-shaped rubber circle, this piston is shaped with seal groove, suit teflon seal ring in this seal groove, its teflon seal ring outer radial integrally makes two symmetrical three horns for sealing, the compressive plane that cross section is del is radially inside integrally made at teflon seal ring, being symmetrically installed two wedge-shaped rubber circles between bottom compressive plane and seal groove, fits with compressive plane in this wedge-shaped rubber circle inclined-plane.
And, the outside inclination alpha of three horns for sealing of described groove side wall side is 55-60 degree.
And, described two are 6-8 degree for the triangle peak-to-peak inner side angle of inclination beta sealed.
And, the wedge angle of described wedge-shaped rubber circle is 7.5-12.5 degree.
And, described two are used between three horns sealed to be provided with oil storage chamber.
Advantages of the present invention and having the beneficial effect that
There is the movable sealing structure of bottom compression function, this movable sealing structure includes a piston, teflon seal ring and wedge-shaped rubber circle, this piston is shaped with seal groove, suit teflon seal ring in this seal groove, its teflon seal ring outer radial integrally makes two symmetrical three horns for sealing, radially inside go up at teflon seal ring and integrally make the compressive plane that cross section is del, two wedge-shaped rubber circles it are symmetrically installed between bottom compressive plane and seal groove, this wedge-shaped rubber circle inclined-plane and compressive plane laminating, present configuration is simple, design science is reasonable, sealing compensation ability is strong, frictional force is less, good seal performance, long service life.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Detailed description of the invention
Below by specific embodiment, the invention will be further described, and following example are illustrative, is not determinate, it is impossible to limit protection scope of the present invention with this.
nullA kind of movable sealing structure with bottom compression function，This movable sealing structure is applied in cylinder body of hydraulic oil cylinder 1，This movable sealing structure includes a piston 8、Teflon seal ring 4 and wedge-shaped rubber circle 7，This piston is shaped with seal groove 5，Suit teflon seal ring in this seal groove，Its teflon seal ring outer radial integrally makes two symmetrical three horns 3 for sealing，Radially inside go up at teflon seal ring and integrally make the compressive plane 6 that cross section is del，Two wedge-shaped rubber circles it are symmetrically installed between bottom compressive plane and seal groove，This wedge-shaped rubber circle inclined-plane and compressive plane laminating，The outside inclination alpha of three horns for sealing of groove side wall side is 55-60 degree，The outer angle of heel of the present embodiment is 58 degree，Two is 6-8 degree for the triangle peak-to-peak inner side angle of inclination beta sealed，In the present embodiment, angle of heel is 7 degree，The wedge angle of wedge-shaped rubber circle is 7.5-12.5 degree，In the present embodiment, the angle of wedge is 10 degree，Two are used between three horns sealed to be provided with oil storage chamber 2.
Operation principle of the present invention: during installation, teflon seal ring is placed in the seal groove of piston, two wedge-shaped rubber circles are installed between teflon seal ring and piston seal trench bottom, under the precompression effect of wedge-shaped rubber circle, two, left and right symmetrical integrally formed outside teflon seal ring pushes against cylinder body for three horns sealed and plays sealing function.When the left and right sides is subject to oil pressure effect respectively, compressive plane is integrally made inside teflon seal ring, wedge-shaped rubber circle inclined-plane laminating compressive plane, the angle of wedge of wedge-shaped rubber circle is between 7.5-12.5 degree, left and right sides wedge-shaped rubber circle can move inward, wedging teflon seal ring, thus playing sealing function.Two, the left and right of teflon seal ring for the outer angle of heel of three horns that seals between 55-60 degree, interior angle of heel is between 6-8 degree, when reciprocating motion of the pistons, it is easy to form hydrodynamic lubrication for the outer angle of heel of three horns sealed and interior angle of heel for two about teflon seal ring, thus improving sealing effectiveness and extending sealing life.Oil storage chamber outside teflon seal ring also can reduce frictional force during reciprocating motion.This sealing can be used for two way seal.
Claims (2)
- null1. a movable sealing structure with bottom compression function，This movable sealing structure includes a piston、Teflon seal ring and wedge-shaped rubber circle，This piston is shaped with seal groove，Suit teflon seal ring in this seal groove，It is characterized in that: this teflon seal ring outer radial integrally makes two symmetrical three horns for sealing，Radially inside go up at teflon seal ring and integrally make the compressive plane that cross section is del，Two wedge-shaped rubber circles it are symmetrically installed between bottom compressive plane and seal groove，This wedge-shaped rubber circle inclined-plane and compressive plane laminating，During installation, teflon seal ring is placed in the seal groove of piston，Two wedge-shaped rubber circles are installed between teflon seal ring and piston seal trench bottom，Under the precompression effect of wedge-shaped rubber circle，Outside teflon seal ring, two, symmetrical integrally formed left and right pushes against cylinder body for three horns sealed and plays sealing function，When the left and right sides is subject to oil pressure effect respectively，Compressive plane is integrally made inside teflon seal ring，Wedge-shaped rubber circle inclined-plane laminating compressive plane，The angle of wedge of wedge-shaped rubber circle is between 7.5-12.5 degree，Left and right sides wedge-shaped rubber circle can move inward，Wedging teflon seal ring，Thus playing sealing function，Two, the left and right of teflon seal ring for the outer angle of heel of three horns that seals between 55-60 degree，Interior angle of heel is between 6-8 degree，When reciprocating motion of the pistons，It is easy to form hydrodynamic lubrication for the outer angle of heel of three horns sealed and interior angle of heel for two about teflon seal ring，Thus improving sealing effectiveness and extending sealing life.
- 2. the movable sealing structure with bottom compression function according to claim 1, it is characterised in that: described two are used between three horns sealed to be provided with oil storage chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310593716.2A CN103591295B (en) | 2013-11-21 | 2013-11-21 | There is the movable sealing structure of bottom compression function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310593716.2A CN103591295B (en) | 2013-11-21 | 2013-11-21 | There is the movable sealing structure of bottom compression function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103591295A CN103591295A (en) | 2014-02-19 |
| CN103591295B true CN103591295B (en) | 2016-07-06 |
Family
ID=50081541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310593716.2A Expired - Fee Related CN103591295B (en) | 2013-11-21 | 2013-11-21 | There is the movable sealing structure of bottom compression function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103591295B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4032159A (en) * | 1975-10-28 | 1977-06-28 | Poly Seal, Inc. | Interference compression seal |
| CN85203746U (en) * | 1985-09-10 | 1986-05-07 | 煤炭科学研究院太原分院 | Reciprocating cuneiform sealed device |
| CN203051744U (en) * | 2012-11-19 | 2013-07-10 | 戴海平 | Self-compensating seal ring |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7779905B2 (en) * | 2007-02-27 | 2010-08-24 | High Pressure Integrity, Inc. | Subterranean well tool including a locking seal healing system |
-
2013
- 2013-11-21 CN CN201310593716.2A patent/CN103591295B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4032159A (en) * | 1975-10-28 | 1977-06-28 | Poly Seal, Inc. | Interference compression seal |
| CN85203746U (en) * | 1985-09-10 | 1986-05-07 | 煤炭科学研究院太原分院 | Reciprocating cuneiform sealed device |
| CN203051744U (en) * | 2012-11-19 | 2013-07-10 | 戴海平 | Self-compensating seal ring |
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| Publication number | Publication date |
|---|---|
| CN103591295A (en) | 2014-02-19 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 Termination date: 20161121 |