CN218118594U - Low-friction bidirectional cambered surface U-shaped slip ring type combined seal - Google Patents
Low-friction bidirectional cambered surface U-shaped slip ring type combined seal Download PDFInfo
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- CN218118594U CN218118594U CN202120520797.3U CN202120520797U CN218118594U CN 218118594 U CN218118594 U CN 218118594U CN 202120520797 U CN202120520797 U CN 202120520797U CN 218118594 U CN218118594 U CN 218118594U
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Abstract
The utility model belongs to the technical field of dynamic seal assembly, in particular to a low-friction bidirectional cambered surface U-shaped slip ring type combined seal, which comprises a sealing slip ring (1) and an elastic ring (2), wherein the outer wall of the sealing slip ring (1) is provided with a U-shaped groove (3), and two flanges (4) of the sealing slip ring (1) are arranged on two sides of the U-shaped groove (3); the inner wall of the sealing slip ring (1) consists of an arc surface (5) protruding inwards, a first plane (6) and a second plane (7), an oil groove (8) is formed in the top of the arc surface (5), and sealing lips (11) of the sealing slip ring (1) are formed on two sides of a notch of the oil groove (8); the elastic ring (2) is embedded into the U-shaped groove (3), and the joint part of the elastic ring (2) and the sealing slip ring (1) is in arc fit. The utility model discloses sealed area of contact is little, and the design of collocation oil groove has low friction, two way seal's effect, is fit for multiple operating mode environment and uses.
Description
Technical Field
The utility model relates to a fluid seal subassembly technical field specifically is a two-way cambered surface U-shaped slip ring formula composite seal of low friction.
Background
The polytetrafluoroethylene sealing ring is called as a polytetrafluoroethylene sealing ring for short, has good characteristics of water resistance, high temperature resistance, corrosion resistance, ageing resistance and the like, and is widely applied to the field of fluid sealing. Modern hydraulic machinery equipment, for example two side-acting piston cylinder, tetrafluoro sealing washer among the prior art exists that frictional resistance is great, the structure shape is complicated, the installation is loaded down with trivial details scheduling problem when using, has not only increased manufacturing cost, has also restricted the efficiency of equipment simultaneously, can't satisfy current needs.
Therefore, how to overcome the above technical problems and disadvantages is a problem to be solved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a two-way cambered surface U-shaped slip ring formula composite seal of low friction to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the low-friction bidirectional cambered surface U-shaped slip ring type combined seal comprises a sealing slip ring and an elastic ring,
the outer wall of the sealing slip ring is provided with a U-shaped groove, and two sides of the U-shaped groove are two flanges of the sealing slip ring; the inner wall of the sealing slip ring consists of an inward-convex arc surface, a first plane and a second plane which are symmetrically arranged on two sides of the arc surface, the top of the arc surface is provided with an oil groove, the oil groove is symmetrical in structure, and sealing lips of the sealing slip ring are formed at the positions on two sides of a notch of the oil groove;
the elastic ring is embedded into the U-shaped groove, and the joint part of the elastic ring and the sealing slip ring is in arc fit.
Further, the cross section of the oil groove is of a triangular structure.
Furthermore, the included angle of the oil grooves of the triangular structure is 30-120 degrees.
Further, the cross section of the oil groove is semicircular or door-shaped.
Further, the distance between the first plane and the second plane and the end part of the sealing lip is 0.5-5mm.
Furthermore, the thickness of the rib is 0.5-4mm.
Further, the sealing slip ring is made of polytetrafluoroethylene, polyurethane or rubber, and the elastic ring is an O-shaped ring.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) The utility model discloses a two-way cambered surface U-shaped slip ring formula combination seal of low friction because the elastic ring has certain elasticity for sealed sliding ring keeps radial effort constantly, and the sealed lip of the sharp-pointed form of collocation makes sealed face keep a great radial force, thereby has improved sealed ability and reliability.
(2) The utility model discloses a two-way cambered surface U-shaped slip ring formula combined seal of low friction, because the seal lip presents the characteristics of closed angle or narrow lip, sealed area of contact is very little, so frictional force is less. The sealing lip is provided with an oil groove, so that the lubrication is sufficient, and the friction resistance is further reduced. Because of adopting the symmetrical structure, the utility model has the capability of bidirectional sealing, and is suitable for the piston sealing application of bilateral acting.
To sum up, the utility model discloses have good sealing performance, lower frictional resistance has expanded the sealed application range of tetrafluoro.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the sealing slip ring of the present invention;
FIG. 3 is a schematic structural diagram of a sealing slip ring adopting a semicircular oil groove;
FIG. 4 is a schematic structural diagram of a sealing slip ring adopting a gate-shaped oil groove;
FIG. 5 is a cross-sectional view of the elastomeric ring;
fig. 6 is the utility model discloses be applied to piston cylinder both-way seal's schematic structure.
Description of the main element symbols:
1-sealing slip ring, 2-elastic ring, 3-U-shaped groove, 4-flange, 5-arc surface, 6-first plane, 7-second plane, 8-oil groove, 9-shaft, 10-sealing seat and 11-sealing lip.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 and 5, the present invention provides a technical solution: the low-friction bidirectional cambered surface U-shaped slip ring type combined seal comprises a sealing slip ring 1 and an elastic ring 2, wherein the sealing slip ring 1 is made of polytetrafluoroethylene, and the elastic ring 2 is an O-shaped ring.
Referring to fig. 2, the outer wall of the sealing slip ring 1 is provided with a U-shaped groove 3,U, and two sides of the groove 3 are two flanges 4 of the sealing slip ring 1; the inner wall of the sealing sliding ring 1 is composed of an inward convex arc surface 5, a first plane 6 and a second plane 7 which are symmetrically arranged on two sides of the arc surface 5, an oil groove 8 is arranged at the top of the arc surface 5, the oil groove 8 is symmetrical in structure, and sealing lips 11 of the sealing sliding ring 1 are formed on two sides of a notch of the oil groove 8.
The parameters in fig. 2 are as follows: the outer diameter of the cross-sectional circle of the elastic ring 2 is defined as d0, the arc r1 of the joint of the elastic ring 2 and the sealing slip ring 1 is defined as 0.2-1.5d0, the radius r2=1-2r1 of the arc surface 5, and the groove width b of the u-shaped groove 3 is defined as 1-1.2d0. The thickness a of the rib 4 is 0.5-4mm, and the width l2 of the first plane 6 and the second plane 7 is 0.2-1a. The distance s between the first plane 6 and the second plane 7 and the end of the sealing lip is 0.5-5mm. The groove depth e =0.2-2mm of the oil groove 8 and the groove width l1 of the oil groove 8 is 0.5-4mm.
Referring to fig. 1 and 2, the cross section of the oil groove 8 is triangular, and the included angle α of the triangle is 30-120 °, preferably 90 °. Referring to fig. 3 and 4, the cross-section of the oil groove may also be a semicircular or door-shaped structure.
Referring to fig. 1, the elastic ring 2 is embedded in the U-shaped groove 3, and the joint portion of the elastic ring 2 and the sealing slip ring 1 is a circular arc.
Referring to fig. 6, the sealing principle of the present invention is: during the in-service use, the utility model discloses an internal diameter is 0.2-10mm less than the internal diameter of axle 9 to guarantee to have sufficient seal lip interference magnitude, work as the utility model discloses installed in seal receptacle 10, because the elastic ring has certain elasticity, its seal lip 11 sticiss when epaxial 9 to produce great radial power of hugging closely, thereby make the seal lip mouth hug closely and realize sealedly on axle 9.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. Two-way cambered surface U-shaped slip ring formula combined seal of low friction, including sealed sliding ring (1) and elastic ring (2), its characterized in that:
the outer wall of the sealing slip ring (1) is provided with a U-shaped groove (3), and two sides of the U-shaped groove (3) are provided with two flanges (4) of the sealing slip ring (1); the inner wall of the sealing slip ring (1) consists of an inward-convex arc surface (5) and a first plane (6) and a second plane (7) which are symmetrically arranged on two sides of the arc surface (5), the top of the arc surface (5) is provided with oil grooves (8), the oil grooves (8) are symmetrical in structure, and sealing lips (11) of the sealing slip ring (1) are formed at positions on two sides of a notch of each oil groove (8);
the elastic ring (2) is embedded into the U-shaped groove (3), and the joint part of the elastic ring (2) and the sealing slip ring (1) is in arc fit.
2. The low-friction bidirectional cambered U-shaped slip ring type combined seal according to claim 1, wherein: the cross section of the oil groove (8) is of a triangular structure.
3. The low-friction bidirectional cambered U-shaped slip ring type combined seal according to claim 2, wherein: the included angle of the oil grooves (8) of the triangular structure is 30-120 degrees.
4. The low-friction bidirectional cambered U-shaped slip ring type combined seal according to claim 1, wherein: the cross section of the oil groove (8) is semicircular or door-shaped.
5. The low-friction bidirectional cambered U-shaped slip ring type combined seal according to claim 1, wherein: the distance between the first plane (6) and the second plane (7) and the end part of the sealing lip (11) is 0.5-5mm.
6. The low-friction bidirectional cambered U-shaped slip ring type combined seal according to claim 1, wherein: the thickness of the retaining edge (4) is 0.5-4mm.
7. The low-friction bidirectional cambered U-shaped slip ring type combined seal according to claim 1, wherein: the sealing slip ring (1) is made of polytetrafluoroethylene, polyurethane or rubber, and the elastic ring (2) is an O-shaped ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120520797.3U CN218118594U (en) | 2021-03-11 | 2021-03-11 | Low-friction bidirectional cambered surface U-shaped slip ring type combined seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120520797.3U CN218118594U (en) | 2021-03-11 | 2021-03-11 | Low-friction bidirectional cambered surface U-shaped slip ring type combined seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218118594U true CN218118594U (en) | 2022-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120520797.3U Active CN218118594U (en) | 2021-03-11 | 2021-03-11 | Low-friction bidirectional cambered surface U-shaped slip ring type combined seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218118594U (en) |
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2021
- 2021-03-11 CN CN202120520797.3U patent/CN218118594U/en active Active
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