CN210344268U - Heavy-load coaxial piston sealing ring - Google Patents
Heavy-load coaxial piston sealing ring Download PDFInfo
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- CN210344268U CN210344268U CN201920995643.2U CN201920995643U CN210344268U CN 210344268 U CN210344268 U CN 210344268U CN 201920995643 U CN201920995643 U CN 201920995643U CN 210344268 U CN210344268 U CN 210344268U
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Abstract
The utility model discloses a heavy-load coaxial piston sealing ring, which comprises an elastic body, a sealing slip ring, an arc oblique angle oil drainage groove, a lip-shaped bulge, an arc surface and a bulge in the elastic body; a sealing sliding ring is arranged on the outer side of the elastic body, and arc oblique angle oil drainage grooves are formed in the left side and the right side of the sealing sliding ring; a groove is formed in the outer side of the sealing slip ring, and lip-shaped protrusions are formed on the left side and the right side of the groove in a protruding mode; the inner side of the elastic body is provided with a sealing slip ring and an inner bulge of the elastic body, and the inner bulge of the elastic body is arranged along the radial direction of the elastic body; an arc-shaped surface is formed between the elastic body and the sealing slip ring; the elastomer is made of foam nitrile rubber NBR material; the cross section of the elastic body is in an outer arc shape, and the lower two ends of the inner side of the elastic body are of downward convex structures; the sealing slip ring is made of polyurethane, and the Shore hardness of the sealing slip ring is D60. The utility model has the characteristics of guarantee sealing strength, more be fit for high-pressure seal, the wearability is stronger, and life is longer, the installation of being convenient for, non-deformable.
Description
Technical Field
The utility model relates to a coaxial piston seal of heavy load, especially one kind have and guarantee sealing strength, more are fit for high-pressure seal, and the wearability is stronger, and life is longer, the installation of being convenient for, non-deformable's coaxial piston seal of heavy load.
Background
The conventional piston sealing ring generally has the structure of Y-shaped ring, drum-shaped ring, U-shaped seal, cloth clamping combined seal and the like, and has the main defects of single structure, single material of an elastomer, large sliding friction resistance, short service life, high pressure resistance, poor sealing performance and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a have and guarantee sealing strength, more be fit for high-pressure seal, the wearability is stronger, and life is longer, the installation of being convenient for, non-deformable's coaxial piston seal of heavy load.
The purpose of the utility model can be realized by the following technical scheme:
a heavy-load coaxial piston sealing ring comprises an elastic body, a sealing sliding ring, an arc oblique angle oil drainage groove, a lip-shaped bulge, an arc surface and a bulge in the elastic body;
a sealing sliding ring is arranged on the outer side of the elastic body, and arc oblique angle oil drainage grooves are formed in the left side and the right side of the sealing sliding ring; a groove is formed in the outer side of the sealing slip ring, and lip-shaped protrusions are formed on the left side and the right side of the groove in a protruding mode; the inner side of the elastic body is provided with a sealing slip ring and an inner bulge of the elastic body, and the inner bulge of the elastic body is arranged along the radial direction of the elastic body;
an arc-shaped surface is formed between the elastic body and the sealing slip ring;
the elastomer is made of foam nitrile rubber NBR material;
the outer side of the section of the elastic body is arc-shaped, and the lower two ends of the inner side of the section of the elastic body are of downward convex structures;
the sealing slip ring is made of polyurethane, and the Shore hardness of the sealing slip ring is D60;
the plurality of arc oblique angle oil drainage grooves are uniformly distributed on the sealing slip ring, and the arc oblique angle oil drainage grooves are distributed on the sealing slip ring according to a circular matrix;
the central axis of the groove is coincided with the central axis of the sealing slip ring;
the two bulges in the elastic body are respectively arranged at the left end and the right end of the inner side of the elastic body.
The utility model provides a coaxial piston seal circle of heavy load has guarantees seal strength, more is fit for high-pressure seal, and the wearability is stronger, and life is longer, is convenient for install, non-deformable's characteristics. The utility model has the advantages that: the contact area of the elastomer and the sleeve wall arranged in the sealing ring is increased, the elastomer is not easy to roll, the contact area is larger when the elastomer is pressed, and the sealing strength is ensured; the elastic body provides initial sealing compensation force and is more suitable for high-pressure sealing;
the sealing slip ring made of the polyurethane material has stronger wear resistance and longer service life;
the arc oblique angle oil drainage groove enhances the elasticity of the sealing slip ring and improves the sealing effect of the sealing ring; the deformation quantity of the sealing ring is shared by the plurality of arc oblique angle oil drainage grooves, so that the sealing ring is permanently compressed and is not easy to deform; when the seal ring is trapped with oil due to back pressure, the arc-shaped oblique angle oil drainage groove enables hydraulic oil to be better discharged, the service life of the seal ring is prolonged, and the sealing effect is improved;
the groove is matched with the two lip-shaped bulges at the left side and the right side of the groove, so that a double sealing effect is achieved, and the sealing performance of the sealing ring is enhanced;
the arc-shaped surface enables the sealing slip ring to be pressed into the piston cylinder more easily, so that the sealing ring is convenient to mount and not easy to deform;
two both ends about the internal arch of elastomer sets up survey in the elastomer respectively, and the protruding better sealing performance of playing under the low pressure operating mode of elastomer.
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 structure view of a heavy-duty coaxial piston seal ring 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 heavy-load coaxial piston seal ring is shown in a figure 1-2 and comprises an elastic body 1, a seal sliding ring 2, an arc oblique angle oil drainage groove 3, a groove 4, a lip-shaped bulge 5, an arc-shaped surface 6 and an inner bulge 7 of the elastic body;
a sealing sliding ring 2 is arranged on the outer side of the elastic body 1, and arc oblique angle oil drainage grooves 3 are formed in the left side and the right side of the sealing sliding ring 2; a groove 4 is formed in the outer side of the sealing slip ring 2, and lip-shaped protrusions 5 are formed on the left side and the right side of the groove 4 in a protruding mode; the inner side of the elastic body 1 is provided with a sealing sliding ring 2 and an inner protrusion 7 of the elastic body, and the inner protrusion 7 of the elastic body is arranged along the radial direction of the elastic body 1;
an arc-shaped surface 6 is formed between the elastic body 1 and the sealing sliding ring 2;
the elastomer 1 is made of foam nitrile rubber NBR material;
the outer side of the section of the elastic body 1 is arc-shaped, and the lower two ends of the inner side of the section of the elastic body 1 are of downward convex structures; the contact area of the elastomer 1 and the sleeve wall arranged in the sealing ring is increased, the elastomer 1 is not easy to roll, the contact area is larger when the elastomer 1 is pressed, and the sealing strength is ensured; the elastic body 1 provides initial sealing compensation force and is more suitable for high-pressure sealing;
the sealing slip ring 2 is made of polyurethane, and the Shore hardness of the sealing slip ring 2 is D60; the sealing slip ring 2 made of polyurethane material has stronger wear resistance and longer service life;
the plurality of arc oblique angle oil drainage grooves 3 are uniformly distributed on the sealing slip ring 2, and the arc oblique angle oil drainage grooves 3 are distributed on the sealing slip ring 2 according to a circular matrix; the arc oblique angle oil drainage groove 3 enhances the elasticity of the sealing slip ring 2 and improves the sealing effect of the sealing ring; the deformation quantity of the sealing ring is shared by the plurality of arc oblique angle oil drainage grooves 3, so that the sealing ring is permanently compressed and is not easy to deform; when the seal ring is trapped with oil due to back pressure, the arc-shaped oblique angle oil drainage groove 3 enables hydraulic oil to be better discharged, the service life of the seal ring is prolonged, and the sealing effect is improved;
the central axis of the groove 4 is coincided with the central axis of the sealing slip ring 2, and the groove 4 is matched with the two lip-shaped bulges 5 at the left side and the right side of the groove 4, so that a double sealing effect is achieved, and the sealing performance of the sealing ring is enhanced;
the arc-shaped surface 6 is in contact with the sealing sliding ring 2, and the sealing sliding ring 2 is more easily pressed into the piston cylinder by the arc-shaped surface 6, so that the sealing ring is convenient to mount and is not easy to deform;
two both ends about the interior arch 7 of elastomer sets up survey in elastomer 1 respectively, and arch 7 plays better sealing performance under the low pressure operating mode in the elastomer.
The utility model discloses a theory of operation:
a sealing sliding ring 2 is arranged on the outer side of the elastic body 1, and arc oblique angle oil drainage grooves 3 are formed in the left side and the right side of the sealing sliding ring 2; a groove 4 is formed in the outer side of the sealing slip ring 2, and lip-shaped protrusions 5 are formed on the left side and the right side of the groove 4 in a protruding mode; the inner side of the elastic body 1 is provided with a sealing sliding ring 2 and an inner protrusion 7 of the elastic body, and the inner protrusion 7 of the elastic body is arranged along the radial direction of the elastic body 1;
the contact area of the elastomer 1 and the sleeve wall arranged in the sealing ring is increased, the elastomer 1 is not easy to roll, the contact area is larger when the elastomer 1 is pressed, and the sealing strength is ensured; the elastic body 1 provides initial sealing compensation force and is more suitable for high-pressure sealing;
the sealing slip ring 2 made of polyurethane material has stronger wear resistance and longer service life;
the arc oblique angle oil drainage groove 3 enhances the elasticity of the sealing slip ring 2 and improves the sealing effect of the sealing ring; the deformation quantity of the sealing ring is shared by the plurality of arc oblique angle oil drainage grooves 3, so that the sealing ring is permanently compressed and is not easy to deform; when the seal ring is trapped with oil due to back pressure, the arc-shaped oblique angle oil drainage groove 3 enables hydraulic oil to be better discharged, the service life of the seal ring is prolonged, and the sealing effect is improved;
the groove 4 is matched with the two lip-shaped bulges 5 at the left side and the right side of the groove 4, so that a double sealing effect is achieved, and the sealing performance of the sealing ring is enhanced;
the arc-shaped surface 6 enables the sealing slip ring 2 to be pressed into the piston cylinder more easily, so that the sealing ring is convenient to mount and not easy to deform;
two both ends about the interior arch 7 of elastomer sets up survey in elastomer 1 respectively, and arch 7 plays better sealing performance under the low pressure operating mode in the elastomer.
The utility model provides a coaxial piston seal circle of heavy load has guarantees seal strength, more is fit for high-pressure seal, and the wearability is stronger, and life is longer, is convenient for install, non-deformable's characteristics. The utility model has the advantages that: the contact area of the elastomer and the sleeve wall arranged in the sealing ring is increased, the elastomer is not easy to roll, the contact area is larger when the elastomer is pressed, and the sealing strength is ensured; the elastic body provides initial sealing compensation force and is more suitable for high-pressure sealing;
the sealing slip ring made of the polyurethane material has stronger wear resistance and longer service life;
the arc oblique angle oil drainage groove enhances the elasticity of the sealing slip ring and improves the sealing effect of the sealing ring; the deformation quantity of the sealing ring is shared by the plurality of arc oblique angle oil drainage grooves, so that the sealing ring is permanently compressed and is not easy to deform; when the seal ring is trapped with oil due to back pressure, the arc-shaped oblique angle oil drainage groove enables hydraulic oil to be better discharged, the service life of the seal ring is prolonged, and the sealing effect is improved;
the groove is matched with the two lip-shaped bulges at the left side and the right side of the groove, so that a double sealing effect is achieved, and the sealing performance of the sealing ring is enhanced;
the arc-shaped surface enables the sealing slip ring to be pressed into the piston cylinder more easily, so that the sealing ring is convenient to mount and not easy to deform;
two both ends about the internal arch of elastomer sets up survey in the elastomer respectively, and the protruding better sealing performance of playing under the low pressure operating mode of elastomer.
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 (8)
1. A heavy-load coaxial piston seal ring comprises an elastic body (1), a sealing slip ring (2), an arc oblique angle oil drainage groove (3), a groove (4), a lip-shaped bulge (5), an arc surface (6) and an inner bulge (7) of the elastic body, and is characterized in that;
a sealing sliding ring (2) is arranged on the outer side of the elastic body (1), and arc oblique angle oil drainage grooves (3) are formed in the left side and the right side of the sealing sliding ring (2); a groove (4) is formed in the outer side of the sealing slip ring (2), and lip-shaped protrusions (5) are formed on the left side and the right side of the groove (4); the inner side of the elastic body (1) is provided with a sealing sliding ring (2) which is provided with an inner bulge (7) of the elastic body, and the inner bulge (7) of the elastic body is arranged along the radial direction of the elastic body (1).
2. A heavy-duty coaxial piston seal according to claim 1, characterized in that an arc-shaped surface (6) is formed between the elastomer body (1) and the sealing slide ring (2).
3. The heavy-duty coaxial piston ring according to claim 1, wherein said elastomer (1) is made of foam nitrile rubber (NBR).
4. The heavy-duty coaxial piston seal ring according to claim 1, wherein the outer side of the cross section of the elastic body (1) is arc-shaped, and the lower ends of the inner side of the cross section of the elastic body (1) are of a downward convex structure.
5. The heavy-duty coaxial piston seal ring according to claim 1, wherein the sealing slip ring (2) is made of polyurethane, and the shore hardness of the sealing slip ring (2) is D60.
6. The heavy-duty coaxial piston seal ring according to claim 1, characterized in that a plurality of said arc oblique angle oil drainage grooves (3) are uniformly distributed on the sealing slip ring (2), and the arc oblique angle oil drainage grooves (3) are distributed on the sealing slip ring (2) according to a circular matrix.
7. A heavy duty coaxial piston seal ring according to claim 1 wherein the central axis of the groove (4) coincides with the central axis of the sealing slide ring (2).
8. The heavy-duty coaxial piston seal ring according to claim 1, wherein the two inner protrusions (7) of the elastic body are respectively arranged at the left end and the right end of the inner side of the elastic body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920995643.2U CN210344268U (en) | 2019-06-28 | 2019-06-28 | Heavy-load coaxial piston sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920995643.2U CN210344268U (en) | 2019-06-28 | 2019-06-28 | Heavy-load coaxial piston sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210344268U true CN210344268U (en) | 2020-04-17 |
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ID=70191928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920995643.2U Active CN210344268U (en) | 2019-06-28 | 2019-06-28 | Heavy-load coaxial piston sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210344268U (en) |
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2019
- 2019-06-28 CN CN201920995643.2U patent/CN210344268U/en active Active
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