CN209041564U - A kind of high-pressure sealing ring and high-voltage oil cylinder - Google Patents
A kind of high-pressure sealing ring and high-voltage oil cylinder Download PDFInfo
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- CN209041564U CN209041564U CN201821973542.7U CN201821973542U CN209041564U CN 209041564 U CN209041564 U CN 209041564U CN 201821973542 U CN201821973542 U CN 201821973542U CN 209041564 U CN209041564 U CN 209041564U
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- sealing ring
- pressure
- sealing
- oil
- piston rod
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Abstract
The utility model discloses a kind of high-pressure sealing ring and high-voltage oil cylinders, wherein one end of high-pressure sealing ring, including the first sealing ring and the second sealing ring, first sealing ring is equipped with step, and second sealing ring is set on the step.When the high-pressure sealing ring is installed on the piston rod, when one end that first sealing ring is equipped with step is directed away from the one side of oil pocket, i.e. release when, high pressure oil washes away the end face of the first sealing ring, the material hardness of first sealing ring is greater than the material hardness of the second sealing ring, and the elastic properties of materials of second sealing ring is greater than the elastic properties of materials of the first sealing ring；When first sealing ring is equipped with one end of step towards the one side of oil pocket, the material hardness of the material hardness of first sealing ring less than the second sealing ring, the elastic properties of materials of the elastic properties of materials of second sealing ring less than the first sealing ring.The utility model proposes the high-pressure sealing ring service life it is long, pressure maintaining performance is strong when high pressure.
Description
Technical field
The utility model relates to high pressure sealing technical field more particularly to a kind of high-pressure sealing rings and high-voltage oil cylinder.
Background technique
There are many application of high-voltage oil cylinder, and high-voltage oil cylinder generally comprises oil cylinder and piston rod, between oil cylinder and piston rod
Equipped with sealing ring, the oil pocket of oil cylinder is typically provided unloading port, by unloading port, with quick pressure releasing, can reduce the pressure release row of piston
Journey, in pressure release, unloading port and oil pocket gradually become connection state from state of isolation, and in the emptying initial stage, high pressure oil is from oil
When quickly pouring into unloading port in chamber, the sealed circle of high-pressure oil flow washes away the end of sealing ring.
Traditional high-pressure sealing ring generally uses material hardness partially soft, and the preferable PTFE material of elasticity, or uses material
Matter hardness is partially hard, and the POM material that elasticity is poor.In use process, the sealing ring of PTFE is due to partially soft, in washing away for high pressure oil
Under, it is easy to it is broken through, is not durable, and the sealing ring of POM is due to partially hard, pressure maintaining performance is poor when high pressure, and easy release exists to equipment
It causes very big operation to perplex in the course of work, therefore, high-pressure sealing ring currently on the market or is not durable, the service life is short,
Pressure maintaining performance is poor when high pressure, needs to improve.
Summary of the invention
The utility model is arranged on the piston rod, is prevented in order to solve the above technical problems, provide a kind of high-pressure sealing ring
Oil leakage in high-voltage oil cavity, including the first sealing ring and the second sealing ring, one end of first sealing ring are equipped with step, institute
The second sealing ring is stated to be set on the step, when second sealing ring is set on the first sealing ring, the first sealing ring
It is consistent with the outer diameter of the second sealing ring, form integrated sealing surface.
When the high-pressure sealing ring is installed on the piston rod, when one end that first sealing ring is equipped with step is directed away from
When the one side, i.e. release of oil pocket, high pressure oil washes away the end face of the first sealing ring, and the material hardness of first sealing ring is greater than the
The material hardness of two sealing rings, the elastic properties of materials of second sealing ring are greater than the elastic properties of materials of the first sealing ring；When described
One sealing ring be equipped with step one end towards oil pocket one side, i.e. release when, high pressure oil washes away the end face of the second sealing ring, described
The material hardness of first sealing ring is less than the material hardness of the second sealing ring, and the elastic properties of materials of second sealing ring is less than first
The elastic properties of materials of sealing ring.
Optionally, when one end that first sealing ring is equipped with step is directed away from the one side of oil pocket, described first is close
The material of seal is partially hard using material hardness, and the POM that elasticity is poor, and the material of second sealing ring is inclined using material hardness
Soft, and the preferable PTFE of elasticity, when pressure release, washing away for high pressure oil is hardly damaged the first sealing ring, and second sealing effect ratio
The sealing effect of first sealing ring is good, and will not be washed by high pressure oil, the combination of the first sealing ring and the second sealing ring, improves
The high pressure pressure maintaining performance and service life of high-pressure sealing ring.Similarly, when first sealing ring is equipped with one end direction of step
When the one side of oil pocket, the material of first sealing ring uses PTFE, and the material of second sealing ring uses POM.
Optionally, the high-pressure sealing ring is equipped with chamfering towards one end of oil pocket.
Optionally, the step includes First terrace and second step face, and the First terrace extends to described
The end of one sealing ring；The First terrace is parallel with the axis of first sealing ring or has slanted angle；Described
Two step surfaces are vertical with the axis of first sealing ring or have slanted angle, the inner wall of second sealing ring and the wheel of step
It is wide consistent.
Optionally, position limiting structure is equipped between first sealing ring and the second sealing ring, the position limiting structure setting exists
On the inner wall of the First terrace and second sealing ring, such as limit protrusion and limiting slot fit system.
Optionally, the high-pressure sealing ring includes O-shaped rubber ring, and the O-shaped rubber ring is set in first sealing ring
It is interior.
It is corresponding, a kind of high-voltage oil cylinder, including oil cylinder and piston rod, high pressure sealing is equipped between the oil cylinder and piston rod
Part, the high-pressure sealing ring are set on the seal groove of the piston rod, and the piston rod includes that high-voltage oil cavity and high pressure are unloaded
Hydraulic fluid port, which is characterized in that the high-pressure sealing ring includes the first sealing ring and the second sealing ring, one end of first sealing ring
Equipped with step, second sealing ring is set on the step, when second sealing ring is set on the first sealing ring,
The outer diameter of first sealing ring and the second sealing ring is consistent, forms the integrated sealing surface that face close contact is kept away with high-voltage oil cavity；Institute
When stating high-pressure sealing ring installation on the piston rod, when one end that first sealing ring is equipped with step is directed away from the one of oil pocket
Face, the material hardness of first sealing ring are greater than the material hardness of the second sealing ring, the elastic properties of materials of second sealing ring
Greater than the elastic properties of materials of the first sealing ring；When first sealing ring is equipped with one end of step towards the one side of oil pocket, described the
For the material hardness of one sealing ring less than the material hardness of the second sealing ring, the elastic properties of materials of second sealing ring is close less than first
The elastic properties of materials of seal；The height for the side wall that the seal groove is contacted with the second sealing ring is greater than the step of the first sealing ring
Thickness prevents the first sealing ring to be detached from from seal groove.
Optionally, when described one end for being equipped with step when first sealing ring is directed away from the one side of oil pocket, described the
The material of one sealing ring uses POM, and the material of second sealing ring uses PTFE；First sealing ring is equipped with the one of step
When holding towards the one side of oil pocket, the material of first sealing ring uses PTFE, and the material of second sealing ring uses POM.
Optionally, the step includes First terrace and second step face, and the First terrace extends to described
The end of one sealing ring；The First terrace is parallel with the axis of first sealing ring or has slanted angle；Described
Two step surfaces are vertical with the axis of first sealing ring or have slanted angle.
Optionally, the high-pressure sealing ring includes O-shaped rubber ring, and the O-shaped rubber ring is set in first sealing ring
It is interior.
Optionally, position limiting structure is equipped between first sealing ring and the second sealing ring, the position limiting structure setting exists
On the inner wall of the First terrace and second sealing ring.
Corresponding, a kind of production method of high-pressure sealing ring, the high-pressure sealing ring is arranged on the piston rod, prevents high pressure
In oil pocket oil leakage, which is characterized in that high-pressure sealing ring is split into at least two components, including be set-located first
Sealing ring and the second sealing ring, wherein the first sealing ring is arranged close to the high-voltage oil cavity of oil cylinder, and the material of the first sealing ring is hard
Degree is greater than the material hardness of the second sealing ring, and the elastic properties of materials of second sealing ring is greater than the elastic properties of materials of the first sealing ring.
Optionally, the first sealing ring uses POM material, and the second sealing ring uses PTFE material, or using other common
Material, belong in the protection scope of the application.
From the above description of the utility model, it can be seen, compared to the prior art, the utility model has the advantages that
A kind of high-pressure sealing ring and high-voltage oil cylinder that the application proposes, it is close including the first different sealing ring of material and second
Seal, the sealing ring for the side washed away by high pressure oil is using the higher material of hardness, the sealing that do not washed away by high pressure oil
Circle guarantees that entire high-pressure sealing ring in pressure release, when being washed, is hardly damaged using the higher material of elasticity, in high-pressure work,
It can also ensure that good pressure maintaining performance.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and constitutes one of the utility model
Point, the exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the utility model
Improper restriction.
Wherein:
Fig. 1 is the structural schematic diagram of conventional high-tension sealing；
Fig. 2 is the structural schematic diagram of conventional high-tension sealing；
Fig. 3 is a kind of structural schematic diagram of high-pressure sealing ring of the utility model；
Fig. 4 is the structural schematic diagram of a kind of high-pressure sealing ring of the utility model and oil cylinder；
Fig. 5 is the structural schematic diagram of a kind of high-pressure sealing ring of the utility model and oil cylinder；
Fig. 6 is a kind of structural schematic diagram of high-pressure sealing ring of the utility model；
Fig. 7 is the structural schematic diagram of a kind of high-pressure sealing ring of the utility model and oil cylinder；
Symbol in Fig. 1-Fig. 7 is expressed as: the sealing of 10- conventional high-tension, 20- high-pressure sealing ring, the first sealing ring of 21-, 22-
Second sealing ring, 23-O type rubber ring, 31- oil cylinder, 32- piston rod, 33- high-voltage oil cavity, 34- unloading port.
Specific embodiment
In order to be clearer and more clear technical problem to be solved in the utility model, technical solution and beneficial effect, with
Under in conjunction with the accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein
Example is applied only to explain the utility model, is not used to limit the utility model.
Fig. 1 and Fig. 2 are please referred to, conventional high-tension sealing 10, sealing ring uses integral type, and material is consistent, if using hardness
It is partially hard, and the POM that elasticity is poor, then pressure maintaining performance when not can guarantee high pressure, if it is partially soft using hardness, and elasticity would be preferable
PTFE, then easy to damage by high pressure oil impact in pressure release, for the defect for solving conventional high-tension sealing 10, the application proposes following
Technical solution.
Embodiment one: it referring to Fig. 3, a kind of high-pressure sealing ring 20, is set on piston rod 32, prevents in high-voltage oil cavity 33
Oil leakage, including the first sealing ring 21 and the second sealing ring 22, one end of first sealing ring 21 is equipped with step, described the
Two sealing rings 22 are set on the step, when second sealing ring 22 is set on the first sealing ring 21, the first sealing
Circle 21 is consistent with the outer diameter of the second sealing ring 22, forms integrated sealing surface.
Referring to Fig. 4, first sealing ring 21 is equipped with step when the high-pressure sealing ring 20 is mounted on piston rod 32
One end when being directed away from the one side, i.e. release of oil pocket, high pressure oil washes away the end face of the first sealing ring 21, first sealing ring
21 material hardness is greater than the material hardness of the second sealing ring 22, and the elastic properties of materials of second sealing ring 22 is greater than the first sealing
The elastic properties of materials of circle 21, in the present embodiment, the material of first sealing ring 21 is partially hard using material hardness, and elasticity is poor
The material of POM, second sealing ring 22 are partially soft using material hardness, and the preferable PTFE of elasticity.
When please referring to Fig. 5 pressure release, washing away for high pressure oil is hardly damaged the first sealing ring 21, and second sealing effect is than
The sealing effect of one sealing ring 21 is good, and will not be washed by high pressure oil, the combination of the first sealing ring 21 and the second sealing ring 22,
Improve the high pressure pressure maintaining performance and service life of high-pressure sealing ring 20.
In other embodiments, when first sealing ring 21 is equipped with one end of step towards the one side of oil pocket, i.e. release
When, high pressure oil washes away the end face of the second sealing ring 22, and the material hardness of first sealing ring 21 is less than the second sealing ring 22
Material hardness, the elastic properties of materials of the elastic properties of materials of second sealing ring 22 less than the first sealing ring 21.
Embodiment two: on the basis of example 1, the high-pressure sealing ring 20 is equipped with chamfering towards one end of oil pocket, and
Position limiting structure is equipped between first sealing ring 21 and the second sealing ring 22, the position limiting structure is arranged in the first step
On the inner wall of face and second sealing ring 22.
Embodiment three: on the basis of example 1, the high-pressure sealing ring 20 includes O-shaped rubber ring 23, please refers to Fig. 6
And Fig. 7, the O-shaped rubber ring 23 are set in first sealing ring 21.
Example IV: corresponding embodiment one arrives embodiment three, please refers to Fig. 4 or Fig. 7, a kind of high-voltage oil cylinder, including oil cylinder
31 and piston rod 32, high-pressure sealing ring 20 is equipped between the oil cylinder 31 and piston rod 32, the high-pressure sealing ring 20 is set in
On the seal groove of the piston rod 32, the piston rod 32 includes high-voltage oil cavity 33 and high pressure unloading port 34, which is characterized in that
The high-pressure sealing ring 20 includes the first sealing ring 21 and the second sealing ring 22, and one end of first sealing ring 21 is equipped with platform
Rank, second sealing ring 22 are set on the step, when second sealing ring 22 is set on the first sealing ring 21,
First sealing ring 21 is consistent with the outer diameter of the second sealing ring 22, forms the integrated sealing that face close contact is kept away with high-voltage oil cavity 33
Face.
When the high-pressure sealing ring 20 is mounted on piston rod 32, first sealing ring 21 is equipped with one end direction of step
One side far from oil pocket, the material hardness of first sealing ring 21 are greater than the material hardness of the second sealing ring 22, and described second
The elastic properties of materials of sealing ring 22 is greater than the elastic properties of materials of the first sealing ring 21.The seal groove is contacted with the second sealing ring 22
The height of side wall is greater than the thickness of the step of the first sealing ring 21, and the first sealing ring 21 is prevented to be detached from from seal groove.
In the present embodiment, the material of first sealing ring 21 is partially hard using material hardness, and the POM that elasticity is poor, institute
The material for stating the second sealing ring 22 is partially soft using material hardness, and the preferable PTFE of elasticity.
Embodiment five: a kind of production method of high-pressure sealing ring 20, the high-pressure sealing ring 20 are set on piston rod 32,
Prevent the oil leakage in high-voltage oil cavity 33, which is characterized in that high-pressure sealing ring 20 is split into at least two components, including is arranged
The first sealing ring 21 and the second sealing ring 22 together, wherein the first sealing ring 21 is set close to the high-voltage oil cavity 33 of oil cylinder 31
It sets, and the material hardness of the first sealing ring 21 is greater than the material hardness of the second sealing ring 22, the material of second sealing ring 22
Elasticity is greater than the elastic properties of materials of the first sealing ring 21.In the present embodiment, the first sealing ring 21 uses POM material, the second sealing ring
22 use PTFE material, in other embodiments, are replaced using other common materials, belong to the protection scope of the application
It is interior.
In conclusion compared to the prior art, a kind of high-pressure sealing ring and high-voltage oil cylinder that the application proposes, including material
Different the first sealing rings and the second sealing ring, the sealing ring of the side washed away by high pressure oil using the higher material of hardness,
The sealing ring not washed away by high pressure oil uses the higher material of elasticity, guarantees that entire high-pressure sealing ring in pressure release, is washed
When, it is hardly damaged, in high-pressure work, additionally it is possible to guarantee good pressure maintaining performance.
The utility model is exemplarily described above in conjunction with attached drawing, it is clear that the utility model specific implementation not by
The limitation of aforesaid way, as long as the various unsubstantialities carried out using the method concept and technical solution of the utility model change
Into, or it is not improved the conception and technical scheme of the utility model are directly applied into other occasions, in the utility model
Protection scope within.
Claims (9)
1. a kind of high-pressure sealing ring is arranged on the piston rod, the oil leakage in high-voltage oil cavity is prevented, which is characterized in that including the
One end of one sealing ring and the second sealing ring, first sealing ring is equipped with step, and second sealing ring is set in described
On rank, when second sealing ring is set on the first sealing ring, the outer diameter of the first sealing ring and the second sealing ring is consistent, shape
Integral sealing surface；When the high-pressure sealing ring is installed on the piston rod, when first sealing ring is equipped with one end of step
It is directed away from the one side of oil pocket, the material hardness of first sealing ring is greater than the material hardness of the second sealing ring, and described second
The elastic properties of materials of sealing ring is greater than the elastic properties of materials of the first sealing ring；When first sealing ring is equipped with one end direction oil of step
The one side of chamber, material hardness of the material hardness less than the second sealing ring of first sealing ring, the material of second sealing ring
Elastic properties of materials of the material elasticity less than the first sealing ring.
2. a kind of high-pressure sealing ring according to claim 1, which is characterized in that when first sealing ring is equipped with step
When one end is directed away from the one side of oil pocket, the material of first sealing ring uses POM, and the material of second sealing ring uses
PTFE；When first sealing ring is equipped with the one side of one end of step towards oil pocket, the material of first sealing ring is used
The material of PTFE, second sealing ring use POM.
3. a kind of high-pressure sealing ring according to claim 1, which is characterized in that the high-pressure sealing ring towards oil pocket one
End is equipped with chamfering.
4. a kind of high-pressure sealing ring according to claim 1, which is characterized in that the step includes First terrace and
Two step surfaces, the First terrace extend to the end of first sealing ring；The First terrace and described first close
The axis of seal is parallel or has slanted angle；The second step face is vertical with the axis of first sealing ring or has inclination
Angle.
5. a kind of high-pressure sealing ring according to claim 4, which is characterized in that first sealing ring and the second sealing ring
Between be equipped with position limiting structure, the position limiting structure is arranged on the inner wall of the First terrace and second sealing ring.
6. a kind of high-pressure sealing ring according to claim 1, which is characterized in that including O-shaped rubber ring, the O-shaped rubber
Snare is located in first sealing ring.
7. a kind of high-voltage oil cylinder, including oil cylinder and piston rod are equipped with high-pressure sealing ring, the height between the oil cylinder and piston rod
Laminate seal is set on the seal groove of the piston rod, and the piston rod includes high-voltage oil cavity and high pressure unloading port, spy
Sign is that the high-pressure sealing ring includes the first sealing ring and the second sealing ring, and one end of first sealing ring is equipped with step,
Second sealing ring is set on the step, when second sealing ring is set on the first sealing ring, the first sealing
Circle is consistent with the outer diameter of the second sealing ring, forms the integrated sealing surface that face close contact is kept away with high-voltage oil cavity；The high densification
Sealing installation on the piston rod when, when one end that first sealing ring is equipped with step is directed away from the one side of oil pocket, described the
The material hardness of one sealing ring is greater than the material hardness of the second sealing ring, and it is close that the elastic properties of materials of second sealing ring is greater than first
The elastic properties of materials of seal；When first sealing ring be equipped with step one end towards oil pocket one side, first sealing ring
Material hardness of the material hardness less than the second sealing ring, the material of the elastic properties of materials of second sealing ring less than the first sealing ring
Elasticity；The height for the side wall that the seal groove is contacted with the second sealing ring is greater than the thickness of the step of the first sealing ring.
8. a kind of high-voltage oil cylinder according to claim 7, which is characterized in that described when first sealing ring is equipped with step
One end when being directed away from the one side of oil pocket, the material of first sealing ring uses POM, and the material of second sealing ring is adopted
Use PTFE；When first sealing ring is equipped with the one side of one end of step towards oil pocket, the material of first sealing ring is used
The material of PTFE, second sealing ring use POM.
9. a kind of high-voltage oil cylinder according to claim 7, which is characterized in that the step includes First terrace and second
Step surface, the First terrace extend to the end of first sealing ring；The First terrace and first sealing
The axis of circle is parallel or has slanted angle；The second step face is vertical with the axis of first sealing ring or has slanted angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821973542.7U CN209041564U (en) | 2018-11-28 | 2018-11-28 | A kind of high-pressure sealing ring and high-voltage oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821973542.7U CN209041564U (en) | 2018-11-28 | 2018-11-28 | A kind of high-pressure sealing ring and high-voltage oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209041564U true CN209041564U (en) | 2019-06-28 |
Family
ID=67043720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821973542.7U Active CN209041564U (en) | 2018-11-28 | 2018-11-28 | A kind of high-pressure sealing ring and high-voltage oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209041564U (en) |
-
2018
- 2018-11-28 CN CN201821973542.7U patent/CN209041564U/en active Active
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