CN215634924U - Piston sealing element - Google Patents
Piston sealing element Download PDFInfo
- Publication number
- CN215634924U CN215634924U CN202122374285.3U CN202122374285U CN215634924U CN 215634924 U CN215634924 U CN 215634924U CN 202122374285 U CN202122374285 U CN 202122374285U CN 215634924 U CN215634924 U CN 215634924U
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- China
- Prior art keywords
- ring
- shd
- retainer
- piston
- holder
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- 238000007789 sealing Methods 0.000 title description 22
- 239000000463 material Substances 0.000 claims abstract description 16
- 229920002635 polyurethane Polymers 0.000 claims abstract description 10
- 239000004814 polyurethane Substances 0.000 claims abstract description 10
- 229920000459 Nitrile rubber Polymers 0.000 claims description 12
- 229920001971 elastomer Polymers 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
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- Sealing Devices (AREA)
Abstract
The utility model provides a piston seal, relate to hydraulic pressure, pneumatic seal technical field, a piston seal specifically says so, be applied to in the pneumatic cylinder, be suitable for the higher occasion of volume requirement of revealing in the hydro-cylinder, during the application, set up in the ring channel of piston side, the holder of making by the polyurethane material of high rigidity, inlay the trapezoidal butyl-eye rubber ring of holder outside inslot and the inboard rectangle butyl-eye rubber ring of holder and constitute, compare with present technique, its simple structure of this technique, easy installation, satisfy simultaneously high, in, the different service environment of low pressure, the problem is extruded to the high-pressure ring body among the prior art has been solved, the not enough of low pressure seal lip inefficacy, better accord with the actual use operating mode requirement.
Description
The technical field is as follows:
the technology relates to the technical field of hydraulic and pneumatic sealing, in particular to a movable plug.
Background art:
the existing hydraulic cylinder piston sealing elements are of four types, wherein the first type is a lip-shaped Y-shaped ring which is made of polyurethane material or nitrile rubber, and the sealing element is characterized by large friction force, poor extrusion resistance, incapability of opening a low-pressure lip and sealing failure; the second type is a Gerley ring which is filled with nitrile rubber and is combined with polytetrafluoroethylene, and is characterized by small friction force, small compression amount, poor sealing performance and high processing precision of the cylinder barrel required in use; the third type is combined sealing, which is composed of nitrile rubber, hard plastic and polyformaldehyde, and is characterized by convenient installation and independent use; the defects that the nitrile rubber sealing part has short service life and is easy to generate permanent deformation, and the sealing effect is poor when the use pressure is lower than 5 MPa; the fourth type is V-shaped combined sealing, a plurality of pieces of clusters are formed by cloth clamping for use, the defect is that the friction force is overlarge, and meanwhile, an adjusting and pressing mode needs to be set.
The utility model content is as follows:
the technology provides a piston sealing element for solve among the prior art not enough that all kinds of sealing members exist, solve the pneumatic cylinder and seal the problem of revealing at the low pressure, applicable in low, well, high pressure, the pneumatic cylinder of different pressure grades, application scope is wide, simple to operate, the commonality is strong, characteristics such as long service life.
In order to achieve the above object, the piston sealing member of the present technology can be widely applied to hydraulic cylinders, is suitable for occasions with higher requirements on leakage amount in the oil cylinder, and is arranged in an annular groove on the side surface of the piston during application, wherein the piston sealing member comprises: the device comprises a retainer 2, a ladder-shaped ring 3 and a rectangular ring 1, and is characterized in that the retainer is made of high-hardness polyurethane material, and a groove is formed in the outer side of the retainer; the trapezoid is embedded in the groove, and the rectangular ring is positioned on the inner side of the retainer.
The piston seal is characterized in that the retainer is made of high-hardness polyurethane material, and the hardness of the retainer is 90 shD-95 shD.
A piston seal characterized by a spherical surface SR on the outside of the rectangular ring and a flat surface on the inside, made of nitrile rubber material, having a hardness of 85 shD-90 shD.
A piston seal, characterized in that the outside of the ladder-shaped ring is R circular arc, the inside is spherical SR-shaped outer groove, the ladder-shaped ring is made of nitrile rubber material, and the hardness is 70 shD-80 shD.
Compared with the prior art, the beneficial effect of this sealing member is: the sealing device is suitable for occasions with higher requirements on leakage amount in the oil cylinder, and during application, the sealing device is arranged in an annular groove on the side face of the piston, the retainer is made of high-hardness polyurethane materials, the trapezoidal nitrile rubber ring embedded in the groove on the outer side of the retainer and the rectangular nitrile rubber ring on the inner side of the retainer are formed, the sealing device is simple in structure and easy to install, different using environments of high pressure, medium pressure and low pressure are met simultaneously, the problem of extrusion of a high-pressure annular body in the prior art is solved, the low-pressure sealing lip is not enough to lose efficacy, and the sealing device better meets the requirements of actual using working conditions.
Drawings
FIG. 1 is a schematic view of a piston seal of the present technology;
FIG. 2 is a schematic view of a piston seal, retainer, of the present technique;
FIG. 3 is a schematic view of a piston seal, a stepped ring, according to the present technique;
FIG. 4 is a schematic view of a piston seal of the present technology, with a rectangular ring;
in the figure: rectangular ring 1, holder 2, ladder-shaped ring 3.
Detailed Description
The present technology is described in further detail below with reference to the attached drawings and examples, it being understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
A piston seal, as shown in fig. 1, comprising: the device comprises a retainer 2, a ladder-shaped ring 3 and a rectangular ring 1, and is characterized in that the retainer 2 is made of high-hardness polyurethane material, and a groove is formed in the outer side of the retainer 2; the trapezoid 3 is embedded in the groove; the rectangular ring 1 is positioned on the inner side of the retainer 2; as shown in fig. 2, the holder 2 is made of high-hardness polyurethane material, and the outer side of the holder is provided with a groove, wherein the hardness of the groove is 90 shD-95 shD; as shown in fig. 3, the outer side of the rectangular ring 1 is a spherical surface SR, the inner side is a plane, and the rectangular ring is made of nitrile rubber material, and the hardness of the rectangular ring is 85 shD-90 shD; as shown in fig. 4, the outer side of the ladder-shaped ring 3 is an R-arc, the inner side is a spherical SR-shaped outer groove, the ladder-shaped ring is made of nitrile rubber material, and the hardness is 70 shD-80 shD; compared with the prior art, the beneficial effect of this sealing member is: be suitable for the higher occasion of volume requirement of revealing in the hydro-cylinder, during the application, set up in the ring channel of piston side, holder 2 made by the polyurethane material of high rigidity, inlay at the trapezoidal butyl-eye rubber ring 3 of 2 outside inslots of holder and the inboard rectangle butyl-eye rubber ring 1 of holder 1 and constitute, the steam generator is simple in structure, easy installation, satisfy simultaneously high, medium, low pressure different service environment, the problem of extruding of high pressure ring body among the prior art has been solved, the not enough of low pressure seal lip inefficacy, better accord with the actual use operating mode requirement.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model.
Claims (4)
1. The utility model provides a piston seal spare, is applied to in the pneumatic cylinder, is suitable for the higher occasion of volume requirement of revealing in the hydro-cylinder, during the application, sets up in the ring channel of piston side, wherein includes: the device comprises a retainer, a ladder-shaped ring and a rectangular ring, and is characterized in that the retainer is made of high-hardness polyurethane material, and a groove is formed in the outer side of the retainer; the ladder-shaped ring is embedded in the groove, and the rectangular ring is positioned on the inner side of the retainer.
2. The piston seal of claim 1 wherein said retainer is formed of a high durometer polyurethane material having a durometer of 90 shD-95 shD.
3. A piston seal according to claim 1, wherein the rectangular annulus is spherical SR on the outside and flat on the inside and is made of nitrile rubber material having a hardness of 85 shD-90 shD.
4. The piston seal of claim 1 wherein said stepped ring is formed of nitrile rubber material having a hardness of 70 shD-80 shD and has an outer R-arc on the outside and a spherical SR-shaped outer groove on the inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122374285.3U CN215634924U (en) | 2021-10-03 | 2021-10-03 | Piston sealing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122374285.3U CN215634924U (en) | 2021-10-03 | 2021-10-03 | Piston sealing element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215634924U true CN215634924U (en) | 2022-01-25 |
Family
ID=79933389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122374285.3U Active CN215634924U (en) | 2021-10-03 | 2021-10-03 | Piston sealing element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215634924U (en) |
-
2021
- 2021-10-03 CN CN202122374285.3U patent/CN215634924U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231228 Address after: 266199 No. 318, Jinshui Road, Licang District, Qingdao, Shandong Patentee after: Qingdao Longshenghe Electromechanical Equipment Co.,Ltd. Address before: 100176 room 313, 3rd floor, building 4, yard 5, Liangshuihe 2nd Street, Beijing Economic and Technological Development Zone, Daxing District, Beijing Patentee before: Beijing Aerospace Ruitai Hydraulic Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |