CN211574260U - Piston rod is with novel buffering sealing washer - Google Patents
Piston rod is with novel buffering sealing washer Download PDFInfo
- Publication number
- CN211574260U CN211574260U CN202020026239.7U CN202020026239U CN211574260U CN 211574260 U CN211574260 U CN 211574260U CN 202020026239 U CN202020026239 U CN 202020026239U CN 211574260 U CN211574260 U CN 211574260U
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- lip
- boss
- piston rod
- interior
- sealing washer
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Abstract
The utility model provides a piston rod is with novel buffering sealing washer belongs to sealing member technical field, be the sealing washer body of chevron including the cross-section, the sealing washer body includes interior lip and outer lip, is provided with the boss between interior lip and the outer lip, and the boss height is higher than interior lip and outer lip, and interior lip root is provided with a plurality of interior lip recess, and outer lip root is provided with a plurality of outer lip recesses, evenly is provided with a plurality of boss recesses on the boss, and sealing washer body bottom is provided with the arch of two symmetries, and interior protruding and outer protruding, evenly be provided with the protruding recess of a plurality of on interior protruding and the outer protruding respectively. The utility model has the advantages of good sealing performance, low friction, long service life, impact resistance, extrusion resistance and good oil return performance.
Description
Technical Field
The utility model belongs to the technical field of the sealing member, especially, relate to a piston rod is with novel buffering sealing washer.
Background
The hydraulic breaking hammer belongs to a high-frequency reciprocating motion tool and is widely applied to industries such as mining, roads, buildings and the like. The hydraulic seal is used for preventing leakage, but the increase of the sealing performance increases friction force, the increase of the friction force directly causes the reduction of the movement capacity and the quality, the friction force accelerates the abrasion of the seal, and the friction and the abrasion are main reasons for causing the damage of the seal.
Meanwhile, because the piston rod seal and the breaking hammer sealing system provided with the piston rod are used in series, the buffer sealing ring needs to relieve a part of oil pressure and needs to discharge a part of hydraulic oil to the inner surface of the main oil seal, so that the buffer sealing ring needs to have better impact resistance, extrusion resistance and oil return performance.
Disclosure of Invention
The to-be-solved problem of the utility model is to provide a piston rod is with novel buffering sealing washer that sealing performance is good, and frictional force is low, long service life, shock-resistant, resistant extrusion and oil return performance are good.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a piston rod is with novel buffering sealing washer, includes that the cross-section is the sealing washer body of chevron, the sealing washer body includes interior lip and outer lip, be provided with the boss between interior lip and the outer lip, the boss highly is higher than interior lip and outer lip, interior lip root is provided with a plurality of interior lip recesses, outer lip root is provided with a plurality of outer lip recesses, evenly be provided with a plurality of boss recesses on the boss.
The bottom of the sealing ring body is provided with two symmetrical bulges, namely an inner bulge and an outer bulge.
The inner protrusion and the outer protrusion are respectively and uniformly provided with a plurality of protrusion grooves,
the inner lip groove, the inner protruding groove, the outer protruding groove and the outer lip groove are communicated.
Since the technical scheme is used, the utility model discloses dress that middle boss can be very compact is in cylinder body slot the inside, can with slot upper and lower both sides in close contact with, when hydraulic oil pressure impact and piston rod reciprocating motion, the oil blanket is very steady not swing in the slot, eight boss recesses of boss can make hydraulic pressure oil pressure fully smooth and easy get into in its and the U-shaped groove between interior lip and the outer lip, make the oil blanket lip effectual open to play good sealing performance. The contact area of oil blanket and piston rod can be reduced to a plurality of inner lip recesses that the inner lip root set up, can also store partly hydraulic oil in the inner lip recess and increase the lubricity to reduce the friction area between oil blanket and the piston rod, thereby reduce frictional force, the effectual life who improves the oil blanket. When the hydraulic oil pressure is too large, the inner lip groove at the root of the inner lip can be decompressed, the hydraulic oil can be connected in series into the two raised grooves through the inner lip groove under the condition of back pressure, and then the raised grooves close to the root of the outer lip are connected in series into the outer lip groove to return to the cylinder body, so that the occurrence of back pressure is effectively prevented, and the extrusion damage of the buffering oil seal is avoided.
The utility model has the advantages that: the sealing device has the advantages of good sealing performance, low friction force, long service life, impact resistance, extrusion resistance and good oil return performance.
Drawings
The advantages and mode of realisation of the invention will become more apparent hereinafter by describing in detail the invention with reference to the attached drawings, wherein the content shown in the drawings is only for explaining the invention, without constituting any limitation to the meaning of the invention, in which:
FIG. 1 is a schematic cross-sectional view of the present invention
FIG. 2 is a schematic view of the top view structure of the present invention
FIG. 3 is a schematic side view of the present invention
In the figure:
1. inner lip 2, outer lip 3 and boss
4. Inner lip groove 5, outer lip groove 6 and boss groove
7. Inner protrusion 8 and outer protrusion
Detailed Description
As shown in figures 1 to 3, the novel buffering seal ring for the piston rod of the utility model comprises a seal ring body with a cross section in a Chinese character 'shan' shape, the seal ring body comprises an inner lip 1 and an outer lip 2, a boss 3 is arranged between the inner lip 1 and the outer lip 2, the boss 3 is higher than the inner lip 1 and the outer lip 2, a plurality of inner lip grooves 4 are arranged at the root of the inner lip 1, a plurality of outer lip grooves 5 are arranged at the root of the outer lip 2, a plurality of boss grooves 6 are evenly arranged on the boss 3, two symmetrical protrusions are arranged at the bottom of the seal ring body, an inner protrusion 7 and an outer protrusion 8, a plurality of protrusion grooves are evenly arranged on the inner protrusion 7 and the outer protrusion 8 respectively, the inner lip grooves 4 and the protrusion grooves of the inner protrusion 7, the protrusion grooves of the outer protrusion 8 are communicated with the four outer lip grooves 5, the number of the boss grooves 6 is eight, and the number of the protrusion grooves of the inner protrusion 7 and the outer protrusion 8 is eight.
The utility model discloses the dress that middle boss 3 can be very compact is in cylinder body slot the inside, can with slot upper and lower both sides in close contact with, when hydraulic oil pressure strikes and piston rod reciprocating motion, the oil blanket is very steady not swing in the slot, eight boss recess 6 of boss 3 can make the hydraulic pressure oil pressure fully smooth and easy get into its and interior lip 1 and the outer lip 2 between the U-shaped groove in, make the oil blanket lip effectual open to play good sealing performance. A plurality of inner lip grooves 4 arranged at the root of the inner lip 1 can reduce the contact area between the oil seal and the piston rod, and a part of hydraulic oil can be stored in the inner lip grooves 4 to increase the lubricating property, so that the friction area between the oil seal and the piston rod is reduced, the friction force is reduced, and the service life of the oil seal is effectively prolonged. When the hydraulic oil pressure is too large, the inner lip groove 4 at the root of the inner lip 1 can be decompressed, the hydraulic oil can be connected in series into the two raised grooves through the inner lip groove 4 under the condition of back pressure, and then the raised grooves of the outer projections 8 are connected in series into the outer lip groove 5 to return into the cylinder body, so that the occurrence of back pressure is effectively prevented, and the extrusion damage of a buffer oil seal is avoided.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.
Claims (4)
1. The utility model provides a piston rod is with novel buffering sealing washer which characterized in that: the sealing ring comprises a sealing ring body with a cross section in a shape like a Chinese character 'shan', wherein the sealing ring body comprises an inner lip and an outer lip, a boss is arranged between the inner lip and the outer lip, the boss is higher than the inner lip and the outer lip, a plurality of inner lip grooves are formed in the root of the inner lip, a plurality of outer lip grooves are formed in the root of the outer lip, and a plurality of boss grooves are evenly formed in the boss.
2. The new buffer seal ring for piston rod according to claim 1, characterized in that: the bottom of the sealing ring body is provided with two symmetrical bulges, namely an inner bulge and an outer bulge.
3. The new buffer seal ring for piston rod according to claim 2, characterized in that: and the inner protrusion and the outer protrusion are respectively and uniformly provided with a plurality of protrusion grooves.
4. The new buffer seal ring for piston rod according to claim 3, characterized in that: the inner lip groove, the inner protruding groove, the outer protruding groove and the outer lip groove are communicated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020026239.7U CN211574260U (en) | 2020-01-07 | 2020-01-07 | Piston rod is with novel buffering sealing washer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020026239.7U CN211574260U (en) | 2020-01-07 | 2020-01-07 | Piston rod is with novel buffering sealing washer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211574260U true CN211574260U (en) | 2020-09-25 |
Family
ID=72553034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020026239.7U Active CN211574260U (en) | 2020-01-07 | 2020-01-07 | Piston rod is with novel buffering sealing washer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211574260U (en) |
-
2020
- 2020-01-07 CN CN202020026239.7U patent/CN211574260U/en active Active
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