CN210344288U - Sealing ring for coaxial piston rod - Google Patents
Sealing ring for coaxial piston rod Download PDFInfo
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- CN210344288U CN210344288U CN201920994627.1U CN201920994627U CN210344288U CN 210344288 U CN210344288 U CN 210344288U CN 201920994627 U CN201920994627 U CN 201920994627U CN 210344288 U CN210344288 U CN 210344288U
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- slip ring
- clamping groove
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Abstract
The utility model discloses a sealing ring for a coaxial piston rod, which comprises a slip ring, an elastic body, an arc-shaped bulge and an oil guide groove; the outer side of the elastic body is provided with a slip ring, the left side and the right side of the slip ring are provided with arc-shaped bulges, and the arc-shaped bulges are distributed on the left side and the right side of the slip ring according to a circular matrix; an oil guide groove is formed between every two adjacent arc-shaped bulges; an outer convex block is arranged at the left end of the outer side of the sliding ring, a clamping groove is formed in the sliding ring at the right end of the outer convex block, the clamping groove is matched with the elastic body, and the elastic body is arranged on the outer side of the clamping groove in the sliding ring; reinforcing ribs are arranged in the slip ring, and are distributed along the radial direction of the slip ring; the left side and the right side of the reinforcing rib are respectively provided with a wedge-shaped angle. The utility model has the characteristics of promote sealed effect, promote static pressurize performance, reduce the installation degree of difficulty, promote the sealing performance under the low pressure operating mode, the cost is lower, reduces permanent compression deformation.
Description
Technical Field
The utility model relates to a coaxial sealing washer for piston rod, especially one kind has the sealed effect of promotion, promotes static pressurize performance, reduces the installation degree of difficulty, promotes the sealing performance under the low pressure operating mode, and the cost is lower, reduces permanent compression deformation's coaxial sealing washer for piston rod.
Background
In the prior art, the oil cylinder piston hole is sealed by independently designing and using a sealing ring with an O-shaped structure or independently designing and using a steckel seal with a rectangular structure.
The steiner is typically formed by a combination of a rubber O-ring and a teflon ring, the O-ring being the force applying element that provides sufficient sealing force and compensates for the teflon ring. The sealing device is suitable for sealing the piston rod of the hydraulic cylinder. The steve seal is a single-action seal and is divided into a steve seal for a piston and a steve seal for a piston rod. The Stent seal has the advantages of low friction, no creeping, small starting force, high pressure resistance, simple groove structure and the like. The steiner has the defects that the steiner is not suitable for working conditions of high pressure or ultrahigh pressure and hydraulic systems, and the polyurethane or nitrile rubber material determines the weak points of poor temperature resistance, easy aging, weak durability and the like of the U-shaped ring. A single O-shaped ring can only play a one-way sealing role.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a have and promote sealed effect, promote static pressurize performance, reduce the installation degree of difficulty, promote the sealing performance under the low pressure operating mode, the cost is lower, reduces permanent compression deformation's sealing washer for coaxial piston rod.
The purpose of the utility model can be realized by the following technical scheme:
a sealing ring for a coaxial piston rod comprises a sliding ring, an elastic body, an arc-shaped bulge and an oil guide groove;
the outer side of the elastic body is provided with a slip ring, the left side and the right side of the slip ring are provided with arc-shaped bulges, and the arc-shaped bulges are distributed on the left side and the right side of the slip ring according to a circular matrix; an oil guide groove is formed between every two adjacent arc-shaped bulges;
an outer convex block is arranged at the left end of the outer side of the sliding ring, a clamping groove is formed in the sliding ring at the right end of the outer convex block, the clamping groove is matched with the elastic body, and the elastic body is arranged on the outer side of the clamping groove in the sliding ring;
reinforcing ribs are arranged in the slip ring, and are distributed along the radial direction of the slip ring; wedge-shaped angles are respectively arranged at the left side and the right side of the reinforcing rib;
the wedge angle of the wedge angle on the right side of the slip ring is larger than that on the left side of the slip ring;
the slip ring is made of high-hardness polyurethane, and the hardness of the slip ring is Shore D60;
the elastic body is a circular ring with a circular section; the elastomer is made of foam nitrile rubber NBR.
The utility model provides a coaxial sealing washer for piston rod has the sealed effect of promotion, promotes static pressurize performance, reduces the installation degree of difficulty, promotes the sealing performance under the low pressure operating mode, and the cost is lower, reduces permanent compression deformation's characteristics. The utility model has the advantages that: the clamping groove is used for clamping the elastic body, so that the elastic body is fixed in the clamping groove; the clamping groove is a single-side clamping groove, an outer convex block is not arranged on the right side of the clamping groove, the elastomer is convenient to replace, and meanwhile, when high-pressure oil is arranged on the back surface of the sealing ring, pressure can be relieved in time;
the oil guide groove enables oil on two sides of the sealing ring to be difficult to trap pressure, reduces medium leakage on one side of the sealing ring, improves sealing effect and enables oil pressure to act on the sliding ring better; the slip ring is matched with the elastic body to form a coaxial piston sealing element, so that the static pressure maintaining performance of the sealing ring is improved;
the inner side of the slip ring is provided with a reinforcing rib, the area of a contact surface between the reinforcing rib and the installation is reduced, the friction resistance of the outer side of the sealing ring is reduced by the reinforcing rib surface, and the installation difficulty of the sealing ring is reduced;
the sliding ring made of high-hardness polyurethane has strong wear resistance, and the sealing ring has low permanent compression deformation by matching with the high elastic modulus of the elastomer arranged outside the sliding ring.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic cross-sectional structural view of a sealing ring for a coaxial piston rod according to the present invention;
fig. 2 is an enlarged view of fig. 1 at a.
Detailed Description
The purpose of the utility model can be realized by the following technical scheme:
a sealing ring for a coaxial piston rod is shown in figures 1-2 and comprises a sliding ring 1, an elastic body 2, an arc-shaped bulge 3 and an oil guide groove 4;
the outer side of the elastic body 2 is provided with a sliding ring 1, the left side and the right side of the sliding ring 1 are provided with arc-shaped bulges 3, and the arc-shaped bulges 3 are distributed on the left side and the right side of the sliding ring 1 according to a circular matrix; an oil guide groove 4 is formed between every two adjacent arc-shaped bulges 3; the oil guide groove 4 ensures that oil liquid on two sides of the sealing ring is not easy to trap pressure, reduces the medium leakage on one side of the sealing ring, improves the sealing effect and ensures that the oil pressure can better act on the sliding ring 1; the slip ring 1 and the elastic body 2 are matched to form a coaxial piston sealing element, so that the static pressure maintaining performance of the Stent seal is improved;
an outer convex block is arranged at the left end of the outer side of the sliding ring 1, a clamping groove 11 is formed in the sliding ring 1 at the right end of the outer convex block, the clamping groove 11 is matched with the elastic body 2, and the elastic body 2 is arranged on the outer side of the clamping groove 11 in the sliding ring 1; the clamping groove 11 just clamps the elastic body 2, so that the elastic body 2 is fixed in the clamping groove 11; the clamping groove 11 is a single-side clamping groove, an outer convex block is not arranged on the right side of the clamping groove 11, the elastic body 2 is convenient to replace, and meanwhile when high-pressure oil is arranged on the back face of the sealing ring, pressure can be relieved in time;
reinforcing ribs 13 are arranged inside the slip ring 1, and the reinforcing ribs 13 are distributed along the radial direction of the slip ring 1; wedge-shaped angles 12 are respectively arranged at the left side and the right side of the reinforcing rib 13; the area of a contact surface between the reinforcing rib 13 and the installation is reduced, the friction resistance of the outer side of the sealing ring is reduced by the surface of the reinforcing rib 13, and the installation difficulty of the sealing ring is reduced;
the wedge angle of the wedge angle 12 at the right side of the slip ring 1 is larger than the wedge angle 12 at the left side of the slip ring 1;
the material of the slip ring 1 is high-hardness polyurethane, and the hardness of the slip ring 1 is Shore D60; the slip ring 1 made of high-hardness polyurethane has strong wear resistance, and the seal ring has low permanent compression deformation by matching with the high elastic modulus of the elastomer 2 arranged outside the slip ring 1;
the elastic body 2 is a circular ring with a circular section; the elastomer 2 is made of foam nitrile rubber NBR.
The utility model discloses a theory of operation:
the utility model is provided with a slip ring 1 outside an elastomer 2, the left and right sides of the slip ring 1 are provided with arc-shaped bulges 3, and a plurality of arc-shaped bulges 3 are distributed on the left and right sides of the slip ring 1 according to a circular matrix; an oil guide groove 4 is formed between every two adjacent arc-shaped bulges 3; the oil guide groove 4 ensures that oil on two sides of the sealing ring is not easy to trap pressure, reduces medium leakage on one side of the sealing ring, improves the sealing effect and ensures that oil pressure can better act on the sliding ring 1; the slip ring 1 and the elastic body 2 are matched to form a coaxial piston sealing element, so that the static pressure maintaining performance of the Stent seal is improved;
the clamping groove 11 is just used for clamping the elastic body 2, so that the elastic body 2 is fixed in the clamping groove 11; the clamping groove 11 is a single-side clamping groove, an outer convex block is not arranged on the right side of the clamping groove 11, the elastic body 2 is convenient to replace, and meanwhile when high-pressure oil is arranged on the back face of the sealing ring, pressure can be relieved in time;
a reinforcing rib 13 is arranged in the slip ring 1, the area of a contact surface between the reinforcing rib 13 and the installation is reduced, the friction resistance of the outer side of the sealing ring is reduced by the surface of the reinforcing rib 13, and the installation difficulty of the sealing ring is reduced;
the sliding ring 1 made of high-hardness polyurethane has strong wear resistance, and the sealing ring has low permanent compression deformation by matching with the high elastic modulus of the elastomer 2 arranged outside the sliding ring 1.
The utility model provides a coaxial sealing washer for piston rod has the sealed effect of promotion, promotes static pressurize performance, reduces the installation degree of difficulty, promotes the sealing performance under the low pressure operating mode, and the cost is lower, reduces permanent compression deformation's characteristics. The utility model has the advantages that: the clamping groove is used for clamping the elastic body, so that the elastic body is fixed in the clamping groove; the clamping groove is a single-side clamping groove, an outer convex block is not arranged on the right side of the clamping groove, the elastomer is convenient to replace, and meanwhile, when high-pressure oil is arranged on the back surface of the sealing ring, pressure can be relieved in time;
the oil guide groove enables oil on two sides of the sealing ring to be difficult to trap pressure, reduces medium leakage on one side of the sealing ring, improves sealing effect and enables oil pressure to act on the sliding ring better; the slip ring and the elastic body are matched to form a coaxial piston sealing element, so that the static pressure maintaining performance of the Stent seal is improved;
the inner side of the slip ring is provided with a reinforcing rib, the area of a contact surface between the reinforcing rib and the installation is reduced, the friction resistance of the outer side of the sealing ring is reduced by the reinforcing rib surface, and the installation difficulty of the sealing ring is reduced;
the sliding ring made of high-hardness polyurethane has strong wear resistance, and the sealing ring has low permanent compression deformation by matching with the high elastic modulus of the elastomer arranged outside the sliding ring.
The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or exceeding the scope of the invention as defined in the claims.
Claims (5)
1. A sealing ring for a coaxial piston rod comprises a sliding ring (1), an elastic body (2), an arc-shaped bulge (3) and an oil guide groove (4), and is characterized in that;
the outer side of the elastic body (2) is provided with a sliding ring (1), the left side and the right side of the sliding ring (1) are provided with arc-shaped bulges (3), and the arc-shaped bulges (3) are distributed on the left side and the right side of the sliding ring (1) according to a circular matrix; an oil guide groove (4) is formed between every two adjacent arc-shaped bulges (3);
the left end of the outer side of the sliding ring (1) is provided with an outer convex block, a clamping groove (11) is formed in the sliding ring (1) at the right end of the outer convex block, the clamping groove (11) is matched with the elastic body (2), and the elastic body (2) is installed on the outer side of the clamping groove (11) in the sliding ring (1).
2. The sealing ring for the coaxial piston rod as claimed in claim 1, characterized in that a reinforcing rib (13) is arranged inside the slip ring (1), the reinforcing rib (13) is distributed along the radial direction of the slip ring (1); wedge-shaped angles (12) are respectively arranged at the left side and the right side of the reinforcing rib (13).
3. A seal ring for a coaxial piston rod according to claim 1, characterized in that the wedge angle (12) on the right side of the slip ring (1) is larger than the wedge angle (12) on the left side of the slip ring (1).
4. The sealing ring for the coaxial piston rod as claimed in claim 1, wherein the material of the sliding ring (1) is high hardness polyurethane, and the hardness of the sliding ring (1) is shore D60.
5. A sealing ring for a coaxial piston rod according to claim 1, characterized in that the elastomer body (2) is a circular ring with a circular cross-section; the elastomer (2) is made of foam nitrile butadiene rubber NBR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920994627.1U CN210344288U (en) | 2019-06-28 | 2019-06-28 | Sealing ring for coaxial piston rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920994627.1U CN210344288U (en) | 2019-06-28 | 2019-06-28 | Sealing ring for coaxial piston rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210344288U true CN210344288U (en) | 2020-04-17 |
Family
ID=70192053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920994627.1U Active CN210344288U (en) | 2019-06-28 | 2019-06-28 | Sealing ring for coaxial piston rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210344288U (en) |
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2019
- 2019-06-28 CN CN201920994627.1U patent/CN210344288U/en active Active
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