High-pressure-resistant oil seal

Abstract

The high-pressure-resistant oil seal comprises first rubber, an outer framework is attached to the inner side of the first rubber, an inner framework is arranged on the inner side of the outer framework, the inner framework and the outer framework are bent inwards by 90 degrees from the middle, and the outer wall of the inner framework and the inner wall of the outer framework are attached to each other; and second rubber is clamped at one end of the inner framework. By adopting the combined structure of the first rubber, the outer framework, the inner framework and the second rubber and arranging the first main lip and the second main lip, the oil seal can better adapt to the high-pressure environment, the sealing performance is remarkably improved, and leakage is effectively prevented. The inner framework and the outer framework are bent inwards by 90 degrees from the middle and are attached to each other, so that the structural strength and stability of the oil seal are enhanced, and the durability of the oil seal is improved. And meanwhile, the cutting surfaces formed on the first main lip and the second main lip are beneficial to reducing friction and abrasion, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of oil seals, in particular to a high-pressure resistant oil seal. Background Art

[0002] Conventional oil seals often struggle to withstand high-pressure environments, prone to leakage and damage, which can affect the proper operation of mechanical equipment. The sealing performance and durability of conventional oil seals are particularly challenging in environments characterized by high pressure, high speed, or high temperatures. Furthermore, conventional oil seals suffer from suboptimal lubrication during installation and operation, which can easily lead to wear and failure. Therefore, a new type of high-pressure-resistant oil seal is urgently needed to address these challenges and improve the reliability and durability of mechanical equipment. Utility Model Content

[0003] The purpose of the present invention is to solve the problems of the above-mentioned background technology and to provide a high-pressure resistant oil seal.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A high-pressure oil seal comprises a first rubber, an outer frame attached to the inner side of the first rubber, an inner frame provided inside the outer frame, the inner frame and the outer frame both being bent inward at 90 degrees from the middle, and the outer wall of the inner frame being in contact with the inner wall of the outer frame;

[0006] A second rubber is clamped at one end of the inner frame, and a first main lip with a triangular cross section is formed inwardly on a side of the second rubber away from the inner frame. A first cutting surface is formed on the upper half of the first main lip.

[0007] As a further solution of the present invention: the lower half of the first main lip is smeared with butter.

[0008] As a further solution of the present invention: the first rubber is bent upward at one end of the outer skeleton and extends to form a special-shaped protrusion, and the special-shaped protrusion is located below the second rubber.

[0009] As a further solution of the present invention: the lower inner side of the special-shaped protrusion protrudes inward to form a secondary lip, the inner side of the special-shaped protrusion is located above the secondary lip and protrudes inward to form a second main lip with a triangular cross-section, and the upper half of the second main lip is formed with a second cutting surface.

[0010] As a further solution of the present invention: the lower half of the second main lip is smeared with butter.

[0011] As a further solution of the present invention: the outer side of the special-shaped protrusion is recessed inward to form a circular groove, and a spring is sleeved in the groove.

[0012] As a further solution of the present invention: a protective spring is formed on the top of the special-shaped protrusion near the groove.

[0013] Beneficial effects of the utility model:

[0014] Significantly improved sealing performance: By adopting a combined structure of the first rubber, outer skeleton, inner skeleton and second rubber, and providing the first main lip and the second main lip, the oil seal can better adapt to high-pressure environments, significantly improve sealing performance and effectively prevent leakage.

[0015] Enhanced durability: The inner and outer frames are bent 90° inward from the center, fitting snugly together to enhance the seal's structural strength and stability, improving its durability. Furthermore, the cut surfaces on the first and second main lips help reduce friction and wear, extending service life.

[0016] Optimized lubrication: Grease is applied to the lower half of the first and second main lips, and springs and retaining springs are installed to further optimize the lubrication of the oil seal, reducing friction and improving operating efficiency. Grease also provides a certain degree of anti-corrosion effect, protecting the oil seal from corrosion and damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the cross-sectional structure of the present utility model.

[0019] In the figure: 1. First rubber; 2. External skeleton; 3. Internal skeleton; 4. Second rubber; 5. First main lip; 6. Auxiliary lip; 7. Second main lip; 8. Spring; 9. Guard spring; 10. Butter; 11. Chamfer; 12. First cutting surface; 13. Second cutting surface. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] For example 1, please refer to Figure 1As shown, the utility model is a high-pressure oil seal, comprising a first rubber 1, an outer frame 2 is attached to the inner side of the first rubber 1, an inner frame 3 is provided inside the outer frame 2, the inner frame 3 and the outer frame 2 are both bent inward 90 degrees from the middle, and the outer wall of the inner frame 3 is in contact with the inner wall of the outer frame 2;

[0022] A second rubber 4 is clamped at one end of the inner skeleton 3 , and a first main lip 5 with a triangular cross-section is formed inwardly on a side of the second rubber 4 away from the inner skeleton 3 . A first cutting surface 12 is formed on the upper half of the first main lip 5 .

[0023] For example 2, please refer to Figure 1 As shown, the utility model is a high-pressure oil seal, comprising a first rubber 1, an outer frame 2 is attached to the inner side of the first rubber 1, an inner frame 3 is provided inside the outer frame 2, the inner frame 3 and the outer frame 2 are both bent inward 90 degrees from the middle, and the outer wall of the inner frame 3 is in contact with the inner wall of the outer frame 2;

[0024] A second rubber 4 is clamped at one end of the inner skeleton 3 , and a first main lip 5 with a triangular cross-section is formed inwardly on a side of the second rubber 4 away from the inner skeleton 3 . A first cutting surface 12 is formed on the upper half of the first main lip 5 .

[0025] The first rubber 1 is bent upward at one end of the outer frame 2 and extends to form a special-shaped protrusion, and the special-shaped protrusion is located below the second rubber 4 .

[0026] The inner side of the irregularly shaped protrusion protrudes inward to form an auxiliary lip 6. The inner side of the irregularly shaped protrusion is located above the auxiliary lip 6 and protrudes inward to form a second main lip 7 with a triangular cross-section. The upper half of the second main lip 7 is formed with a second cutting surface 13. The lower half of the second main lip 7 is coated with butter 10.

[0027] In another embodiment, the outer side of the special-shaped protrusion is inwardly recessed to form a circular groove, and the groove is sheathed with a spring 8. A protective spring 9 is formed at the top of the special-shaped protrusion near the groove.

[0028] A chamfer 11 is formed at one end of the first rubber member 1 away from the irregularly shaped protrusion.

[0029] The above describes an embodiment of the present invention in detail. However, the above description is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the claims of the present invention.

Claims

1. A high pressure resistant oil seal, characterized in that: The invention comprises a first rubber (1), an outer frame (2) is attached to the inner side of the first rubber (1), an inner frame (3) is provided on the inner side of the outer frame (2), the inner frame (3) and the outer frame (2) are both bent inwards by 90 degrees from the middle, and the outer wall of the inner frame (3) and the inner wall of the outer frame (2) are in contact with each other; A second rubber (4) is clamped at one end of the inner skeleton (3), and a first main lip (5) with a triangular cross-section is formed inwardly on a side of the second rubber (4) away from the inner skeleton (3), and a first cutting surface (12) is formed on the upper half of the first main lip (5).

2. A high pressure resistant oil seal according to claim 1, characterized in that: The lower half of the first main lip (5) is smeared with butter (10).

3. A high pressure resistant oil seal according to claim 1, characterized in that: The first rubber (1) is bent upward at one end of the outer frame (2) and extends to form a special-shaped protrusion, and the special-shaped protrusion is located below the second rubber (4).

4. A high pressure resistant oil seal according to claim 3, characterized in that: The inner side of the special-shaped protrusion protrudes inwardly to form an auxiliary lip (6), and the inner side of the special-shaped protrusion is located above the auxiliary lip (6) and protrudes inwardly to form a second main lip (7) with a triangular cross-section. The upper half of the second main lip (7) is formed with a second cutting surface (13).

5. A high pressure resistant oil seal according to claim 4, characterized in that: The lower half of the second main lip (7) is smeared with butter (10).

6. A high pressure resistant oil seal according to claim 3, characterized in that: The outer side of the special-shaped protrusion is recessed inward to form a circular groove, and a spring (8) is sleeved in the groove.

7. A high pressure resistant oil seal according to claim 6, characterized in that: A protective spring (9) is formed on the top of the special-shaped protrusion near the groove.

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