CN212657242U - Oil seal with multiple sealing structures - Google Patents
Oil seal with multiple sealing structures Download PDFInfo
- Publication number
- CN212657242U CN212657242U CN202020820878.0U CN202020820878U CN212657242U CN 212657242 U CN212657242 U CN 212657242U CN 202020820878 U CN202020820878 U CN 202020820878U CN 212657242 U CN212657242 U CN 212657242U
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- Prior art keywords
- oil
- lip
- sealing layer
- sealing
- seal
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- Expired - Fee Related
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Abstract
The utility model relates to an oil blanket technical field, especially an oil blanket of multiple seal structure. The adoption is including three sealing layer, four compression spring, two grease proofing lips, two structures of dust-proof lip and dust-proof portion and grease proofing portion complete symmetry, realized through using multiple seal structure, the oil blanket whole seal effect is stronger, there is second dust-proof lip and the grease proofing lip of second to block in first dust-proof lip and first grease-proof lip when wearing and tearing slightly in addition, increase of service life, the structure that adopts the complete symmetry makes the oil blanket not have the positive and negative difference, make things convenient for the function of assembler installation, it is poor to have solved the oil blanket sealed effect, the oil blanket is wear-resistant not, the oil blanket dress is installed again and is damaged the lips, influence the problem of sealed effect.
Description
Technical Field
The utility model relates to an oil blanket technical field, especially an oil blanket of multiple seal structure.
Background
The friction part of the machine is provided with oil seal for preventing the oil from leaking from the clearance of the machine because the oil enters when the machine runs, the oil seal is a common name of a common sealing element, namely a sealing element for sealing oil of a rotating shaft in mechanical equipment, namely the sealing of lubricating oil, and separates a part needing lubrication in a transmission part from a force-applying part so as not to allow the lubricating oil to leak, and the sealing elements for static sealing and dynamic sealing are called as oil seals. The parts of the operating body box, which are internally provided with liquid lubricating oil and connected with the outside, need oil seals, some are rubber, some are metal, most are steel-reinforced rubber, such as a crankshaft rear oil seal, a gearbox front and rear oil seal, a left half shaft oil seal, a right half shaft oil seal, a main speed reducer front oil seal, an air compressor crankshaft oil seal and the like. The defects of the existing oil seal mainly include that the seal is not tight, the sealing effect is lost after the oil seal is slightly worn, the oil seal has difference of front and back surfaces, attention is needed during assembly, and if the oil seal is reversely mounted, the oil seal lip is abraded when the oil seal is mounted again, so that the service life is shortened.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem who aims at solving is: the technical insufficiency that exists to the aforesaid, a multiple seal structure's oil blanket is provided, adopt including three sealing layer, four compression spring, two grease proofing seal lips, two dustproof seal lips and dustproof portion and the structure of grease proofing portion complete symmetry, realized through using multiple seal structure, the whole sealed effect of oil blanket is stronger, first dustproof seal lip and first grease proofing seal lip still have second dustproof seal lip and second grease proofing seal lip to block when wearing and tearing slightly, increase of service life, adopt the structure of complete symmetry to make the oil blanket not have the positive and negative difference, make things convenient for the function of assembler installation, it is poor to have solved the sealed effect of oil blanket, the oil blanket is not stand wear and tear, the oil blanket is installed again and is damaged the seal lip, influence the problem of sealed effect.
The utility model provides a technical scheme that its technical problem adopted is: including first sealing layer, second sealing layer, third sealing layer, first pressure spring, second pressure spring, be provided with first skeleton in the first sealing layer, be provided with first pressure spring on the first skeleton, be provided with second pressure spring in the second sealing layer, be provided with the second skeleton in the third sealing layer, third sealing layer contact pivot portion just is close to bearing one side and from left to right is provided with first grease proofing seal lip and the grease proofing seal lip of second, third sealing layer contact pivot portion just is close to external one side and is provided with first dust sealing lip and the dustproof seal lip of second from the right side to a left side, be provided with grease proofing seal lip spring on the first grease sealing lip, be provided with the dustproof seal lip spring on the first dustproof seal lip.
Further optimize this technical scheme, first skeleton is the W type, first pressure spring be two and symmetrical fixing on first skeleton.
Further optimizing the technical scheme, the first sealing layer, the second sealing layer and the third sealing layer are made of polytetrafluoroethylene materials.
Compared with the prior art, the beneficial effects of the utility model are that: 1. by arranging the three-layer sealing structure of the first sealing layer, the second sealing layer and the third sealing layer, the whole sealing structure of the oil seal is more stable, and the sealing effect is better in use; 2. by arranging the dual dustproof sealing lip and oil-proof sealing lip structures, the first layer of dustproof sealing lip and the first layer of oil-proof sealing lip are abraded, and when the sealing function is in a problem, the dustproof sealing lip and the oil-proof sealing lip can be used for a short time, so that the service life is prolonged; 3. the oil seal body is set to be a completely symmetrical structure, so that the oil seal body does not have the front side and the back side, the front side and the back side can be distinguished without consuming time when an assembler installs the oil seal, and the problem that the sealing effect is not ideal due to abrasion of a sealing lip after installation errors is avoided.
Drawings
Fig. 1 is a schematic structural view of an oil seal of a multiple seal structure.
In the figure, 1, a first sealing layer; 2. a second sealing layer; 3. a third sealing layer; 4. a first skeleton; 5. a first hold-down spring; 6. a second hold-down spring; 7. a second skeleton; 8. a dust seal lip spring; 9. a first dust seal lip; 10. a second dust seal lip; 11. an oil-proof seal lip spring; 12. a first oil resistant sealing lip; 13. a second oil-proof sealing lip.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Referring to fig. 1, the present invention comprises a first sealant 1, a second sealant 2, a third sealant 3, a first compression spring 5, and a second compression spring 6, a first framework 4 is arranged in the first sealing layer 1, a first compression spring 5 is arranged on the first framework 4, a second compression spring 6 is arranged in the second sealing layer 2, a second framework 7 is arranged in the third sealing layer 3, the third sealing layer 3 contacts the rotating shaft part and is provided with a first oil-proof sealing lip 12 and a second oil-proof sealing lip 13 from left to right on one side close to the bearing, the third sealing layer 3 is contacted with the rotating shaft part and is provided with a first dust sealing lip 9 and a second dust sealing lip 10 from right to left on the side close to the outside, be provided with grease proofing seal lip spring 11 on the first grease proofing seal lip 12, be provided with dust seal lip spring 8 on the first dust seal lip 9.
Preferably, the first frame 4 is W-shaped, and the two first pressing springs 5 are symmetrically fixed on the first frame 4.
Preferably, the first sealing layer 1, the second sealing layer 2 and the third sealing layer 3 are made of polytetrafluoroethylene materials.
When in use, as shown in the figure 1, because an oil film controlled by the oil seal cutting edge exists between the oil seal and the shaft, the oil film has the characteristic of fluid lubrication, and under the action of the surface tension of the liquid, the rigidity of the oil film just enables the oil film and the air contact end to form a crescent surface, thereby preventing the leakage of a working medium and realizing the sealing of the rotating shaft. During installation, oil is coated on the oil seal, the framework oil seal is ensured to be vertical to the axis, if the framework oil seal is not vertical to the axis, the sealing lip of the oil seal can drain lubricating oil from the shaft, excessive abrasion of the sealing lip can also be caused, and in operation, the lubricating agent in the shell slightly seeps out to achieve the optimal state of forming an oil film on the sealing surface. The first sealing layer 1 and the first framework 4, the third sealing layer 3 and the second framework 7 are compounded into a whole through a vulcanization process, wherein a first compression spring 5 in the first sealing layer 1 mainly plays a role in compressing to enable an oil seal to be more attached to a rotating shaft, a second compression spring 6 in the second sealing layer 2 mainly plays a role in compressing to enable the internal and external structures of the oil seal body to be more stable, a first dustproof sealing lip 9 and a second dustproof sealing lip 10 in the third sealing layer 3 play a role in double dust and impurity separation to prevent impurities from entering equipment to be worn and damaged, so that the service life of the equipment is shortened, a first oil-proof sealing lip 12 and a second oil-proof sealing lip 13 in the third sealing layer 3 play a role in double lubricating oil separation to prevent lubricating oil from flowing out and influencing the normal operation of the equipment, a sealing lip spring 8 and an oil-proof sealing lip spring 11 in the third sealing layer 3 also play a role in compressing, the whole pressing effect of the oil seal is enhanced, the effect of multiple sealing is achieved, the service time of the oil seal is prolonged, the replacement times of the oil seal are reduced, and the maintenance cost is saved.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (3)
1. The utility model provides an oil blanket of multiple seal structure which characterized in that: comprises a first sealing layer (1), a second sealing layer (2), a third sealing layer (3), a first compression spring (5) and a second compression spring (6), wherein a first framework (4) is arranged in the first sealing layer (1), the first compression spring (5) is arranged on the first framework (4), the second compression spring (6) is arranged in the second sealing layer (2), a second framework (7) is arranged in the third sealing layer (3), a first oil-proof sealing lip (12) and a second oil-proof sealing lip (13) are arranged on one side, close to a bearing, of the third sealing layer (3) in a contact rotating shaft part, a first dust-proof sealing lip (9) and a second dust-proof sealing lip (10) are arranged on one side, close to the outside, of the third sealing layer (3) in a contact rotating shaft part from right to left, an oil-proof sealing lip (11) is arranged on the first oil-proof sealing lip (12), and a dust seal lip spring (8) is arranged on the first dust seal lip (9).
2. An oil seal of a multiple seal structure according to claim 1, wherein: first skeleton (4) are the W type, first pressure spring (5) are two and symmetrical fixing on first skeleton (4).
3. An oil seal of a multiple seal structure according to claim 1, wherein: the first sealing layer (1), the second sealing layer (2) and the third sealing layer (3) are made of polytetrafluoroethylene materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020820878.0U CN212657242U (en) | 2020-05-18 | 2020-05-18 | Oil seal with multiple sealing structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020820878.0U CN212657242U (en) | 2020-05-18 | 2020-05-18 | Oil seal with multiple sealing structures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212657242U true CN212657242U (en) | 2021-03-05 |
Family
ID=74747676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020820878.0U Expired - Fee Related CN212657242U (en) | 2020-05-18 | 2020-05-18 | Oil seal with multiple sealing structures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212657242U (en) |
-
2020
- 2020-05-18 CN CN202020820878.0U patent/CN212657242U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210305 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |