Oil seal capable of reducing lip pressure
Through the multi-layer sealing lip and oil-absorbing felt structure, combined with the support and elastic adaptability of the beryllium copper skeleton, the problems of wear and lubricating oil leakage are solved, achieving better sealing performance and equipment life extension.
Patent Information
- Application Number
- CN202420633904.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-03-29
AI Technical Summary
During operation of existing oil seals, due to the flow of lubricating oil, the wear between the sealing lip is exerted by increasing the wear between the sealing lip and the shaft, which in turn leads to the problem of lubricating oil leakage.
An oil seal is designed, including a multi-layer sealing lip structure and oil-absorbing felt, through the support and notched shrinking port structure of the second skeleton, absorbs partial pressure and reduces wear, and uses the elasticity of beryllium copper material to adapt to the displacement of the sealing lip to avoid leakage.
Effectively reduce wear between the sealing lip and the shaft, strengthen the sealing effect, avoid lubricant leakage, and extend the service life of the equipment.
Smart Images
Figure CN222141966U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of oil seals, in particular to an oil seal capable of reducing lip pressure. Background Art
[0002] Oil seals are contact-type dynamic seals, which are mainly used to connect bearings with shafts to prevent the lubricating grease in the equipment from leaking through the bearings to the outside world or into the processing chamber, and to prevent external dust from entering the lubricating oil and increasing the resistance and wear of the shafts and transmission parts.
[0003] During the operation of the equipment, lubricating oil will also flow inside the equipment to reduce the wear of transmission parts and shafts. The flow of lubricating oil may exert pressure on the sealing lip, thereby increasing the contact force between the sealing lip and the shaft, thereby aggravating the wear of the sealing lip. As time goes by, the wear of the sealing lip increases, which can easily lead to the leakage of lubricating grease in the equipment. Utility Model Content
[0004] Based on this, the purpose of the utility model is to provide an oil seal that can reduce the lip pressure to solve the technical problems mentioned in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an oil seal capable of reducing lip pressure, comprising an oil seal body, wherein the inner ring of the oil seal body is respectively provided with a first sealing lip, a second sealing lip and a third sealing lip from top to bottom, and a first oil-absorbing felt is connected to the lower part of the oil seal body, and a second oil-absorbing felt is connected to the upper part of the oil seal body.
[0006] By adopting the above technical solution, the first oil absorption felt and the second oil absorption felt are set to lubricate the oil seal body and the shaft rod, which effectively reduces the phenomenon of increased wear between the sealing lip and the shaft rod caused by increased pressure. At the same time, the second sealing lip and the third sealing lip are set to effectively avoid leakage of lubricating oil in the two oil absorption felts.
[0007] Furthermore, the first oil-absorbing felt and the second oil-absorbing felt are both filled with lubricating oil.
[0008] By adopting the above technical solution, the first oil-absorbing felt and the second oil-absorbing felt are provided to lubricate the oil seal body and the shaft rod, thereby effectively reducing the phenomenon of increased wear between the sealing lip and the shaft rod caused by increased pressure.
[0009] Furthermore, the first oil-absorbing felt is located between the second sealing lip and the third sealing lip.
[0010] By adopting the above technical solution, the second sealing lip is lubricated by the first oil-absorbing felt, which effectively reduces the wear of the second seal when the pressure increases, and the first oil-absorbing felt is sealed by the second sealing lip and the third sealing lip.
[0011] Furthermore, the second oil-absorbing felt is located between the first sealing lip and the second sealing lip.
[0012] By adopting the above technical solution, the first sealing lip and the second sealing lip are lubricated by the second oil-absorbing felt, which effectively reduces the wear of the first sealing lip and the second sealing lip when the pressure increases. At the same time, the second oil-absorbing felt is sealed by the first sealing lip and the second sealing lip.
[0013] Furthermore, a second frame is provided on the inner wall of the oil seal body, and a notch and a shrinkage opening are respectively provided on the top of the second frame.
[0014] By adopting the above technical solution, the first sealing lip and the second sealing lip are supported by the second skeleton, so that part of the pressure applied to the first sealing lip and the second sealing lip by the lubricating grease in the equipment is absorbed by the second skeleton, thereby reducing the wear of the first sealing lip and the second sealing lip. At the same time, through the setting of the notch and the contraction opening, and because the second skeleton is made of beryllium copper and has good elasticity, the second skeleton can bend and deform to adapt to the displacement of the first sealing lip and the second sealing lip.
[0015] Furthermore, the second skeleton is made of beryllium copper material.
[0016] By adopting the above technical solution, the second skeleton can bend and deform to adapt to the displacement of the first sealing lip and the second sealing lip, thereby avoiding the phenomenon that after the first sealing lip and the second sealing lip are worn, the sealing lip cannot be deformed to fit the shaft due to the support and fixation of the second skeleton.
[0017] Furthermore, the cross section of the second skeleton is in an "L" shape.
[0018] By adopting the above technical solution, the first sealing lip and the second sealing lip are supported by the second skeleton, so that part of the pressure applied by the lubricating grease in the equipment to the first sealing lip and the second sealing lip is absorbed by the second skeleton.
[0019] Furthermore, a shaft rod passes through the top of the oil seal body, and a first skeleton is provided on the inner wall of the oil seal body.
[0020] By adopting the above technical solution, the gap between the shaft and the equipment body is filled by the oil seal, thereby avoiding pollution caused by leakage of lubricating grease in the equipment, and at the same time increasing the structural strength of the oil seal body through the first skeleton.
[0021] In summary, the utility model mainly has the following beneficial effects:
[0022] 1. The utility model provides lubrication between the oil seal body and the shaft rod through the provision of the second sealing lip, the third sealing lip, the first oil absorption felt and the second oil absorption felt, and effectively reduces the phenomenon of increased wear between the sealing lip and the shaft rod caused by increased pressure. At the same time, the provision of the second sealing lip and the third sealing lip effectively avoids leakage of lubricating oil in the two oil absorption felts; lubrication is added to reduce wear caused by increased pressure;
[0023] 2. The utility model supports the first sealing lip and the second sealing lip through the second skeleton, through the provision of the second skeleton, the notch and the shrinkage opening, so that part of the pressure applied to the first sealing lip and the second sealing lip by the lubricating grease in the equipment is absorbed by the second skeleton, thereby reducing the wear of the first sealing lip and the second sealing lip. At the same time, through the provision of the notch and the shrinkage opening, and because the second skeleton is made of beryllium copper with good elasticity, the second skeleton can bend and deform to adapt to the displacement of the first sealing lip and the second sealing lip, thereby avoiding the phenomenon that after the first sealing lip and the second sealing lip are worn, the sealing lips cannot be deformed to fit the shaft rod due to the support and fixation of the second skeleton, causing grease leakage; absorb part of the pressure to reduce the wear of the sealing lips. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a structural schematic diagram of the utility model;
[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;
[0026] Figure 3 For the utility model Figure 2 A magnified view of the structure in ;
[0027] Figure 4 It is a schematic diagram of the explosion structure of the utility model.
[0028] In the figure: 1. oil seal body; 2. shaft; 3. first sealing lip; 4. second sealing lip; 5. third sealing lip; 6. first frame; 7. second frame; 8. notch; 9. first oil-absorbing felt; 10. second oil-absorbing felt; 11. contraction port. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.
[0030] The following describes an embodiment of the utility model based on its overall structure.
[0031] Embodiment 1:
[0032] An oil seal that reduces lip pressure, such as Figure 1-Figure 4 As shown, it includes an oil seal body 1, and the inner ring of the oil seal body 1 is respectively provided with a first sealing lip 3, a second sealing lip 4 and a third sealing lip 5 from top to bottom. The first sealing lip 3 and the second sealing lip 4 fill the gap between the oil seal body 1 and the shaft rod 2, and the double-layer sealing increases the sealing ability, thereby effectively reducing the leakage of lubricating grease in the equipment. At the same time, the second sealing lip 4 and the third sealing lip 5 effectively prevent the leakage of lubricating oil in the two oil-absorbing felts; the first oil-absorbing felt 9 is connected to the lower part of the oil seal body 1, and the first oil-absorbing felt 9 is located between the second sealing lip 4 and the third sealing lip 5; the second oil-absorbing felt 10 is connected to the upper part of the oil seal body 1, and the first oil-absorbing felt 9 and the second oil-absorbing felt 10 are filled with lubricating oil, and the second oil-absorbing felt 10 is located between the first sealing lip 3 and the second sealing lip 4. Through the arrangement of the first oil-absorbing felt 9 and the second oil-absorbing felt 10, the oil seal body 1 and the shaft rod 2 are lubricated, which effectively reduces the phenomenon of increased wear between the sealing lip and the shaft rod 2 caused by increased pressure.
[0033] See also Figure 1-Figure 3 In the above embodiment, a shaft 2 runs through the top of the oil seal body 1, and a first frame 6 is provided on the inner wall of the oil seal body 1. The frame 6 supports the oil seal body 1 to prevent the pressure of the lubricating grease from breaking through the oil seal body 1.
[0034] Embodiment 2:
[0035] On the basis of the above-mentioned embodiment 1, although lubrication can be added to reduce the wear caused by increased pressure by providing the second sealing lip 4, the third sealing lip 5, the first oil-absorbing felt 9 and the second oil-absorbing felt 10, the flow of lubricating oil will still exert pressure on the sealing lips; now, by providing the second skeleton 7, the notch 8 and the contraction port 11, part of the pressure can be absorbed to reduce the wear of the sealing lips.
[0036] See also Figure 2-Figure 4 In the above embodiment, the inner wall of the oil seal body 1 is provided with a second skeleton 7, and part of the pressure is absorbed by the second skeleton 7, thereby reducing the wear of the first sealing lip 3 and the second sealing lip 4; the second skeleton 7 is made of beryllium copper material, and the cross-section of the second skeleton 7 is "L"-shaped, and a notch 8 and a shrinkage opening 11 are respectively opened on the top of the second skeleton 7. Through the setting of the notch 8 and the shrinkage opening 11, and because the second skeleton 7 is made of beryllium copper and has good elasticity, the second skeleton 7 can be bent and deformed to adapt to the displacement of the first sealing lip 3 and the second sealing lip 4.
[0037] The implementation principle of the utility model is as follows: first, the gap between the oil seal body 1 and the shaft rod 2 is filled by the first sealing lip 3 and the second sealing lip 4, and the double-layer sealing increases the sealing ability, thereby effectively reducing the leakage of lubricating grease in the equipment. At the same time, the first oil-absorbing felt 9 and the second oil-absorbing felt 10 are provided to lubricate the oil seal body 1 and the shaft rod 2, effectively reducing the phenomenon of increased wear between the sealing lip and the shaft rod 2 caused by increased pressure. At the same time, the second sealing lip 4 and the third sealing lip 5 are provided to effectively avoid the leakage of lubricating oil in the two oil-absorbing felts, and the first sealing lip 3 and the second sealing lip 4 are supported by the second skeleton 7, so that part of the pressure applied by the lubricating grease in the equipment to the first sealing lip 3 and the second sealing lip 4 is absorbed by the second skeleton 7, thereby reducing the wear of the first sealing lip 3 and the second sealing lip 4. At the same time, the notch 8 and the contraction port 11 are provided, and the second skeleton 7 is made of beryllium copper and has good elasticity, so that the second skeleton 7 can be bent and deformed to adapt to the displacement of the first sealing lip 3 and the second sealing lip 4.
[0038] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.
Claims
1. An oil seal capable of reducing lip pressure, comprising an oil seal body (1), characterized in that: The inner ring of the oil seal body (1) is respectively provided with a first sealing lip (3), a second sealing lip (4) and a third sealing lip (5) from top to bottom, and a first oil absorbing felt (9) is connected to the lower part of the oil seal body (1), and a second oil absorbing felt (10) is connected to the upper part of the oil seal body (1).
2. The oil seal capable of reducing lip pressure according to claim 1, characterized in that: The first oil-absorbing felt (9) and the second oil-absorbing felt (10) are both filled with lubricating oil.
3. The oil seal capable of reducing lip pressure according to claim 2, characterized in that: The first oil-absorbing felt (9) is located between the second sealing lip (4) and the third sealing lip (5).
4. The oil seal capable of reducing lip pressure according to claim 2, characterized in that: The second oil-absorbing felt (10) is located between the first sealing lip (3) and the second sealing lip (4).
5. The oil seal capable of reducing lip pressure according to claim 1, characterized in that: The inner wall of the oil seal body (1) is provided with a second frame (7), and the top of the second frame (7) is provided with a notch (8) and a contraction opening (11).
6. The oil seal capable of reducing lip pressure according to claim 5, characterized in that: The second frame (7) is made of beryllium copper material.
7. The oil seal capable of reducing lip pressure according to claim 6, characterized in that: The second skeleton (7) has an L-shaped cross section.
8. The oil seal capable of reducing lip pressure according to claim 1, characterized in that: A shaft (2) passes through the top of the oil seal body (1), and a first frame (6) is provided on the inner wall of the oil seal body (1).