CN220816547U - Muddy water-proof double-lip oil seal - Google Patents
Muddy water-proof double-lip oil seal Download PDFInfo
- Publication number
- CN220816547U CN220816547U CN202322389578.8U CN202322389578U CN220816547U CN 220816547 U CN220816547 U CN 220816547U CN 202322389578 U CN202322389578 U CN 202322389578U CN 220816547 U CN220816547 U CN 220816547U
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- lip
- sealing
- muddy water
- oil seal
- double
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- 238000007789 sealing Methods 0.000 claims abstract description 152
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000002265 prevention Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 5
- 230000003405 preventing effect Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 35
- 238000004519 manufacturing process Methods 0.000 description 3
- 244000025254 Cannabis sativa Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The muddy water-proof double-lip oil seal provided by the utility model has a good use effect and a long service life. The technical proposal is as follows: the muddy water-proof double-lip oil seal comprises an integrally formed sealing seat, a supporting part and a double-lip structure, wherein an end cover with an L-shaped section is buckled on the axially outer side of the muddy water-proof double-lip oil seal; the sealing seat is connected with a double-lip structure through a supporting part, the double-lip structure comprises a first sealing lip and a second sealing lip which are arranged in parallel, fastening springs are arranged on the rear sides of the two sealing lips, the first sealing lip and the second sealing lip are contacted with a rotating shaft to form a sealing structure, and a sealing auxiliary lip is arranged on the outer side of the second sealing lip in an extending mode in the axial direction; the sealing auxiliary lip and the end cover are added, and the first sealing auxiliary lip and the second sealing auxiliary lip are symmetrically arranged on two sides of the sealing auxiliary lip respectively, so that the reaction force in the process of contacting the first sealing auxiliary lip with the rotating shaft promotes the second sealing auxiliary lip to press the end cover, and a good muddy water preventing effect is formed.
Description
Technical Field
The utility model relates to an oil seal, in particular to a muddy water-proof double-lip oil seal.
Background
The oil seal is a collective term for a rotating shaft lip-shaped rubber sealing ring and a reciprocating rubber sealing ring; the oil seal is an important mechanical component for blocking the lubricating oil or grease so that leakage does not occur to affect mechanical lubrication and pollute the environment, and is therefore a very important functional mechanical component; wherein, the inner-wrapping framework oil seal is a widely used oil seal; the main manufacturing process of the oil seal with the inner wrapping framework comprises the steps of firstly preparing sizing materials and metal frameworks, then performing hot press molding through an oil seal die and finishing a finished product through a post-processing process; in order to achieve a better sealing effect, a double-lip oil seal is designed in the prior art, namely, two parallel sealing lip structures, such as a soft double-lip sealing ring structure shown in a patent number ZL201020182823.8, are arranged, the double-lip oil seal in the prior art is generally provided with a framework structure and comprises a sealing seat, a supporting part and a double-lip structure which are integrally formed, wherein the sealing seat is an oil seal outer ring structure, the supporting part is connected with the sealing seat and the double-lip structure, the double-lip structure comprises a first sealing lip and a second sealing lip which are arranged in parallel, the rear sides of the two sealing lips are respectively provided with a fastening spring, and the first sealing lip and the second sealing lip are contacted with a rotating shaft to form a sealing structure; the double-lip oil seal in the prior art is poor in muddy water prevention effect, muddy water on the axial outer side of the oil seal is easy to permeate into a cavity on the rear side of the sealing lip on one side, the fastening spring is easy to corrode and deform to finally fail under long-term corrosion of muddy water, and the sealing lip cannot effectively exert the effect of the fastening spring due to failure of the fastening spring, so that the service life of the sealing lip is short in a severe environment similar to that of agricultural machinery, and the service life of the sealing lip cannot be realized.
In summary, the double-lip oil seal in the prior art cannot realize a better muddy water prevention effect, and has a short service life.
Disclosure of utility model
Therefore, the utility model aims to provide the muddy water-proof double-lip oil seal with good use effect and long service life.
The technical scheme adopted by the utility model is as follows: the muddy water-proof double-lip oil seal comprises an integrally formed sealing seat, a supporting part and a double-lip structure, wherein an end cover with an L-shaped section is buckled on the axially outer side of the muddy water-proof double-lip oil seal; the sealing seat is connected with a double-lip structure through a supporting part, the double-lip structure comprises a first sealing lip and a second sealing lip which are arranged in parallel, fastening springs are arranged on the rear sides of the two sealing lips, the first sealing lip and the second sealing lip are contacted with a rotating shaft to form a sealing structure, a sealing auxiliary lip is arranged on the outer axial side of the second sealing lip in an extending mode, the sealing auxiliary lip is arranged on one side of the oblique rotating shaft, a first sealing auxiliary lip and a second sealing auxiliary lip are arranged on the sealing auxiliary lip, the first sealing auxiliary lip and the second sealing auxiliary lip are symmetrically arranged on two sides of the sealing auxiliary lip respectively, the first sealing auxiliary lip is arranged opposite to one side of the rotating shaft and contacted with the rotating shaft, and the second sealing auxiliary lip is arranged opposite to one side of the end cover and contacted with the end cover; the end cover comprises an integrally formed buckling surface and an end surface, the buckling surface is positioned behind the first sealing lip and is connected with the radial inner side surface of the sealing seat through a buckling structure, and the second sealing auxiliary lip is in contact with the axial inner side of the end surface.
Further, the cross section of the sealing attachment lip is rectangular.
Further, the upper end of the supporting part is connected with the middle part of the sealing seat, the lower end of the supporting part is connected with the middle part of the double-lip structure, and the first sealing lip and the second sealing lip are respectively arranged on two sides of the supporting part.
Further, the buckling structure comprises a protruding ring, wherein the buckling surface stretches into one end of the muddy water-proof oil seal and is bent outwards in the radial direction, and a groove is formed in the radial inner side of the sealing seat, and the protruding ring is matched with the groove.
Further, the buckling surface stretches into the radial outside of muddy water prevention oil seal one end and is equipped with first chamfer, contained angle between the radial medial surface of sealing seat and the axial lateral surface of supporting part is provided with the second chamfer, first chamfer and second chamfer inclination phase-match, second chamfer cross-section length is greater than first chamfer.
Further, the seal seat and the support part are both internally provided with a support framework, and the support framework is integrally arranged and penetrates through the seal seat and the support part.
Furthermore, one end of the outer side of the sealing seat in the axial direction extends outwards along the radial direction to be provided with a fixed reference surface, a supporting framework is arranged in the fixed reference surface, and the supporting framework penetrates through the sealing seat, the supporting part and the inside of the fixed reference surface as a whole.
The beneficial effects of the utility model are as follows: the muddy water-proof double-lip oil seal solves the problem of poor muddy water-proof effect of the traditional double-lip oil seal, not only maintains the structure of the original double-lip seal, but also is additionally provided with the sealing auxiliary lip and the end cover, and as the first sealing auxiliary lip and the second sealing auxiliary lip are respectively and symmetrically arranged on two sides of the sealing auxiliary lip, the reaction force in the process of contacting the first sealing auxiliary lip with the rotating shaft causes the sealing auxiliary lip 6 to deflect along the extending root part of the sealing auxiliary lip, so that the second sealing auxiliary lip presses the end cover to form a better muddy water-proof effect, the muddy water is effectively prevented from entering the radial rear cavity of the second sealing lip, the fastening spring on the rear side of the second sealing lip is well protected, and meanwhile, the end cover can directly play a role of preventing silt, grass roots and the like from entering the axial inner side of the muddy water-proof double-lip oil seal and the radial rear cavity of the second sealing lip to a large extent.
Drawings
The utility model is further described with reference to the drawings and the specific embodiments below:
FIG. 1 is a schematic diagram of a cross-sectional structure of a muddy water-proof double-lip oil seal of the utility model;
FIG. 2 is a schematic diagram of a cross-sectional side structure of the muddy water-proof double-lip oil seal of the utility model;
FIG. 3 is an enlarged schematic view of the portion A in FIG. 2;
FIG. 4 is an enlarged schematic view of the portion B in FIG. 2;
in the figure, 1, a sealing seat; 2. a support part; 3. a double lip structure; 3-1, a first sealing lip; 3-2, a second sealing lip; 4. an end cap; 4-1, a buckling surface; 4-2, end faces; 5. a fastening spring; 6. sealing and attaching a lip; 6-1, a first seal attachment lip; 6-2, a second seal attachment lip; 7. a buckling structure; 7-1, a raised ring; 7-2, grooves; 8. a first chamfer; 9. a second chamfer; 10. a support skeleton; 11. and fixing the reference surface.
Description of the embodiments
As shown in fig. 1 to 4, the muddy water-proof double-lip oil seal comprises an integrally formed sealing seat 11, a supporting part 2 and a double-lip structure 3, wherein an end cover 4 with an L-shaped section is buckled on the outer side of the muddy water-proof double-lip oil seal in the axial direction; the sealing seat 1 is connected with the double-lip structure 3 through the supporting part 2, the double-lip structure 3 comprises a first sealing lip 3-1 and a second sealing lip 3-1 which are arranged in parallel, fastening springs 5 are arranged on the rear sides of the two sealing lips, the first sealing lip 3-1 and the second sealing lip 3-1 are contacted with a rotating shaft to form a sealing structure, a sealing auxiliary lip 6 is arranged on the outer axial side of the second sealing lip 3-1 in an extending manner, the sealing auxiliary lip 6 is arranged on one side of the rotating shaft in an inclined manner, a first sealing auxiliary lip 6-1 and a second sealing auxiliary lip 6-2 are arranged on the sealing auxiliary lip 6, the first sealing auxiliary lip 6-1 is arranged on one side opposite to the rotating shaft and is contacted with the rotating shaft, and the second sealing auxiliary lip 6-2 is arranged on one side opposite to the end cover 4 and is contacted with the end cover 4; the end cover 4 comprises an integrally formed buckling surface 4-1 and an end surface 4-2, the buckling surface 4-1 is positioned behind the first sealing lip 3-1 and is connected with the radial inner side surface of the sealing seat 1 through a buckling structure 7, and the second sealing auxiliary lip 6-2 is in contact with the axial inner side of the end surface 4-2. The muddy water-proof double-lip oil seal solves the problem of poor muddy water-proof effect of the traditional double-lip oil seal, not only maintains the structure of the original double-lip seal, but also is additionally provided with the sealing auxiliary lip 6 and the end cover 4, and as the first sealing auxiliary lip 6-1 and the second sealing auxiliary lip 6-2 are respectively and symmetrically arranged at two sides of the sealing auxiliary lip 6, the reaction force in the process of contacting the first sealing auxiliary lip 6-1 with the rotating shaft causes the root extending along the sealing auxiliary lip 6 to deflect, so that the second sealing auxiliary lip 6-2 presses the end cover 4 to form better muddy water-proof effect, the muddy water is effectively prevented from entering the radial rear cavity of the second sealing lip 3-1, the fastening spring 5 at the rear side of the second sealing lip is better protected, and meanwhile, the arrangement of the end cover 4 can directly play the roles of preventing muddy water, grass roots and the like from entering the axial inner side of the muddy water-proof double-lip oil seal and the radial rear cavity of the second sealing lip 3-1 to a large extent, so that the muddy water-proof double-lip oil seal has compact integral structure, excellent performance and better service life; the fastening structure 7 has various fastening structures 7 in the prior art, including but not limited to interference fit, buckle locking and the like, and the main purpose of the fastening structure 7 is to fix the end cover 4 on the muddy water-proof double-lip oil seal to prevent the end cover 4 from falling off in the working process; since the axial middle part of the muddy water-proof double-lip oil seal needs to pass through the rotating shaft, it can be understood that the end face 4-2 of the end cover 4 is provided with a hole for passing through the rotating shaft.
As shown in fig. 1 to 4, the cross section of the seal attachment lip 6 is rectangular, and since the seal attachment lip 6 is extended from the second seal lip 3-1, one end of the seal attachment lip needs to be integrally connected with the second seal attachment lip 6-1, and the other end needs to be provided with the first seal attachment lip 6-2 and the second seal attachment lip 6-2, the cross section of the seal attachment lip 6 is rectangular, which is the simplest and effective structure, and of course, the seal attachment lip 6 may be substantially rectangular for convenience in processing. The upper end of the supporting part 2 is connected with the middle part of the sealing seat 1, the lower end of the supporting part is connected with the middle part of the double-lip structure 3, the first sealing lip 3-1 and the second sealing lip 3-1 are respectively arranged on two sides of the supporting part 2, so that the stress of the first sealing lip 3-1 and the second sealing lip 3-1 is more uniform, and the muddy water preventing effect is more; the buckling structure 7 comprises a convex ring 7-1, wherein the buckling surface 4-1 stretches into one end of the muddy water prevention oil seal and is bent outwards in the radial direction, a groove 7-2 is formed in the radial inner side of the sealing seat 1, and the convex ring 7-1 is matched with the groove 7-2. The design of this buckling structure 7 is simple in structure not only is convenient for the actual operation, simultaneously, reaches better sealed effect between seal seat 1 and end cover 4, and muddy water can't permeate the cavity at the rear of second seal lip 3-1 through between seal seat 1 and the end cover 4, has played better sealed effect. The buckling surface 4-1 stretches into the radial outside of one end of the muddy water prevention oil seal and is provided with a first chamfer 8, an included angle between the radial inner side surface of the sealing seat 1 and the axial outer side surface of the supporting part 2 is provided with a second chamfer 9, the inclination angles of the first chamfer 8 and the second chamfer 9 are matched, and the section length of the second chamfer 9 is greater than that of the first chamfer 8. The inclination angles of the first chamfer 8 and the second chamfer 9 are matched, namely the chamfer inclined surfaces of the first chamfer 8 and the second chamfer 9 are mutually attached or parallel, the design plays a role in limiting the extending stroke of the end cover 4, and because the machining precision of the end cover 4 has a certain reasonable tolerance range in the actual machining production process, the higher the general precision is, the higher the cost is, the section length of the second chamfer 9 is larger than that of the first chamfer 8, so that the diameter range of the end cover 4 has a certain tolerance, and the production cost is effectively reduced. The sealing seat 1 and the supporting part 2 are internally provided with a supporting framework 10, and the supporting framework 10 is integrally arranged and penetrates through the sealing seat 1 and the supporting part 2. The support frame 10 plays a role in supporting strength, and the integral arrangement makes the overall strength better. The sealing seat 1 is provided with a fixed reference surface 11 extending radially outwards at one end of the outer side in the axial direction, a supporting framework 10 is arranged in the fixed reference surface 11, and the supporting framework 10 is integrally arranged and penetrates through the sealing seat 1, the supporting part 2 and the fixed reference surface 11. The setting of fixed datum plane 11 is convenient for prevent locating action on the mounting hole when muddy water double-lip oil blanket is installed, sets up braced frame 10, and reinforcing supports the rigidity, and integral type sets up braced frame 10 reinforcing wholeness intensity.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
Claims (7)
1. The muddy water-proof double-lip oil seal is characterized by comprising a sealing seat, a supporting part and a double-lip structure which are integrally formed, wherein an end cover with an L-shaped section is buckled on the outer side of the muddy water-proof double-lip oil seal in the axial direction; the sealing seat is connected with a double-lip structure through a supporting part, the double-lip structure comprises a first sealing lip and a second sealing lip which are arranged in parallel, fastening springs are arranged at the rear sides of the two sealing lips, the first sealing lip and the second sealing lip are contacted with a rotating shaft to form a sealing structure, a sealing auxiliary lip is arranged on the outer axial side of the second sealing lip in an extending mode, the sealing auxiliary lip is arranged on one side of the oblique rotating shaft, a first sealing auxiliary lip and a second sealing auxiliary lip are arranged on the sealing auxiliary lip, the first sealing auxiliary lip and the second sealing auxiliary lip are symmetrically arranged on two sides of the sealing auxiliary lip respectively, the first sealing auxiliary lip is arranged opposite to one side of the rotating shaft and contacted with the rotating shaft, and the second sealing auxiliary lip is arranged opposite to one side of the end cover and contacted with the end cover; the end cover comprises an integrally formed buckling surface and an end surface, the buckling surface is positioned behind the first sealing lip and is connected with the radial inner side surface of the sealing seat through a buckling structure, and the second sealing auxiliary lip is in contact with the axial inner side of the end surface.
2. The muddy water-proof double-lip oil seal according to claim 1, characterized in that: the cross section of the sealing auxiliary lip is rectangular.
3. The muddy water-proof double-lip oil seal according to claim 1, characterized in that: the upper end of the supporting part is connected with the middle part of the sealing seat, the lower end of the supporting part is connected with the middle part of the double-lip structure, and the first sealing lip and the second sealing lip are respectively arranged on two sides of the supporting part.
4. The muddy water-proof double-lip oil seal according to claim 1, characterized in that: the buckling structure comprises a convex ring and a groove, wherein the buckling surface stretches into one end of the muddy water prevention oil seal and is radially outwards bent, the groove is arranged on the radial inner side of the sealing seat, and the convex ring is matched with the groove.
5. The muddy water-proof double-lip oil seal according to claim 1 or 4, characterized in that: the buckling surface stretches into the radial outside of muddy water oil seal one end and is equipped with first chamfer, contained angle between the radial medial surface of sealing seat and the axial lateral surface of supporting part is provided with the second chamfer, first chamfer and second chamfer inclination phase-match, second chamfer cross-section length is greater than first chamfer.
6. The muddy water-proof double-lip oil seal according to claim 1, characterized in that: the sealing seat and the supporting part are internally provided with supporting frameworks, and the supporting frameworks penetrate through the sealing seat and the supporting part as a whole.
7. The muddy water-proof double-lip oil seal according to claim 1 or 6, characterized in that: the sealing seat is characterized in that one end of the outer side of the axial direction of the sealing seat extends outwards along the radial direction to be provided with a fixed reference surface, a supporting framework is arranged in the fixed reference surface, and the supporting framework penetrates through the sealing seat, the supporting part and the inside of the fixed reference surface as a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322389578.8U CN220816547U (en) | 2023-09-04 | 2023-09-04 | Muddy water-proof double-lip oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322389578.8U CN220816547U (en) | 2023-09-04 | 2023-09-04 | Muddy water-proof double-lip oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220816547U true CN220816547U (en) | 2024-04-19 |
Family
ID=90698116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322389578.8U Active CN220816547U (en) | 2023-09-04 | 2023-09-04 | Muddy water-proof double-lip oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220816547U (en) |
-
2023
- 2023-09-04 CN CN202322389578.8U patent/CN220816547U/en active Active
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