CN218267234U - Composite seal lip valve oil seal - Google Patents
Composite seal lip valve oil seal Download PDFInfo
- Publication number
- CN218267234U CN218267234U CN202222922836.XU CN202222922836U CN218267234U CN 218267234 U CN218267234 U CN 218267234U CN 202222922836 U CN202222922836 U CN 202222922836U CN 218267234 U CN218267234 U CN 218267234U
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- ring
- lip
- metal framework
- oil
- seal
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Abstract
The utility model provides a composite seal lip valve oil seal, which comprises a metal skeleton ring, a rubber body and an oil seal spring; an inner closing-up clamping table is arranged at the upper end opening of the metal framework ring, the rubber body is made of fluororubber, and the rubber body comprises a sealing lip, an oil storage lip and an in-ring rubber sleeve; the sealing lip is positioned above the upper port of the metal framework ring, the oil storage lip is positioned on the inner side of the inner closing port clamping table of the metal framework ring, and the rubber sleeve in the ring is attached to the inner wall of the metal framework ring; the oil seal spring is arranged on the outer side of the seal lip; the section of the sealing lip is in an inclined shape with an upper port shrinking inwards, and a polytetrafluoroethylene film layer is attached to the inner side surface of the sealing lip; a V-shaped groove capable of storing a trace amount of lubricating oil is formed between the rear end of the polytetrafluoroethylene film layer and the oil storage lip; the inner wall of the rubber sleeve in the ring is provided with concave-convex ripples which are horizontally distributed in a surrounding way. The utility model has the advantages of wear resistance is strong, wearing and tearing are low, sealed effectual, long service life, easy dismouting.
Description
Technical Field
The utility model relates to a mechanical seal technical field especially relates to a compound seal lip valve oil blanket.
Background
The valve oil seal is one of the particularly important parts of the engine valve assembly, and plays the roles of preventing engine oil from entering an air inlet and outlet pipe, preventing mixed gas of gasoline and air and leakage of exhaust gas, preventing engine oil from entering a combustion chamber and the like. The valve oil seal is contacted with gasoline and engine oil at high temperature, the working environment is severe, continuous high-frequency reciprocating motion is required, the abrasion speed is high, and the service life is short. The valve oil seal in the prior art is mostly formed by pressing and vulcanizing single material rubber, and a rubber sealing ring is not wear-resistant, so that the problems of poor sealing, machine oil loss, frequent maintenance, environmental pollution and the like are easily caused after long-time use. In addition, the surface of the rubber layer attached to the inner wall of the metal framework is a plane, the time space for installing the guide pipe is limited, the rubber has no flowing deformation space, the resistance is large, the framework is easy to expand and deform, and the difficulty in installing and disassembling the valve oil seal is increased. Therefore, it is necessary to provide a new composite seal lip valve oil seal to solve the above technical problems.
Disclosure of Invention
The utility model provides a technical problem that solves provides a compound seal lip valve oil blanket, this valve oil blanket have that abrasion resistance can be strong, wearing and tearing are low, sealed effectual, long service life, the advantage of easy dismouting.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model provides a compound seal lip valve oil blanket which characterized in that: comprises a metal framework ring, a rubber body and an oil seal spring; an inner closing-in clamping table is arranged at the upper end opening of the metal framework ring, the rubber body is made of fluororubber and comprises a sealing lip, an oil storage lip and an in-ring rubber sleeve; the sealing lip is positioned above the upper port of the metal framework ring, the oil storage lip is positioned on the inner side of the inner closing port clamping platform of the metal framework ring, and the rubber sleeve in the ring is attached to the inner wall of the metal framework ring; the outer side surface of the sealing lip is provided with a spring groove, and the oil sealing spring is arranged in the spring groove; the section of the sealing lip is in an inclined shape with an upper port shrinking inwards, and a polytetrafluoroethylene film layer is attached to the inner side surface of the sealing lip; a V-shaped groove capable of storing a trace amount of lubricating oil is formed between the rear end of the polytetrafluoroethylene film layer and the oil storage lip.
Furthermore, the inner wall of the rubber sleeve in the ring is provided with concave-convex ripples which are horizontally distributed in a surrounding manner.
The utility model discloses a main seal position adopts the compound mode of fluororubber material seal lip and polytetrafluoroethylene rete, and the fluororubber material seal lip has better anti tearing and presses the resilience that changes, and the high self-lubricating of polytetrafluoroethylene rete, wear-resisting, high low temperature resistant performance, this kind of structure can make the valve oil blanket have better sealed effect and longer life. The V-shaped groove between the rear end of the polytetrafluoroethylene film layer and the oil storage lip can store a small amount of lubricating oil, and the self-lubricating effect of the valve oil seal is improved. The concave-convex corrugation of the inner wall of the rubber sleeve in the ring reduces the holding force of the rubber body on the valve guide pipe, and is convenient for mounting and dismounting the valve oil seal.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of the present invention.
Fig. 2 is a schematic view of the usage state of the present invention.
The corresponding part names in the figure are: 1 a metal skeleton ring; 2, oil seal spring; 3, closing up and clamping the table; 4, sealing the lip; 5, oil storage lip; 6, an annular rubber sleeve; 7, a polytetrafluoroethylene film layer; 8, concave-convex corrugation; 100 valve stems; 101 valve guide.
Detailed Description
In order to clearly understand the technical features, objects and effects of the present invention, the following detailed description of the embodiments, structures and features of the present invention is given with reference to the accompanying drawings and preferred embodiments. The drawings are only for reference and illustration purposes and are not intended to limit the invention.
Referring to fig. 1-2, the present invention provides a composite seal lip valve oil seal, which includes a metal skeleton ring 1, a rubber body, and an oil seal spring 2; an inner closing-up clamping table 3 is arranged at the upper end opening of the metal framework ring, the rubber body is made of fluororubber, and the rubber body comprises a sealing lip 4, an oil storage lip 5 and an in-ring rubber sleeve 6; the sealing lip 4 is positioned above the upper end opening of the metal framework ring 1, the oil storage lip 5 is positioned on the inner side of the inner closing port clamping table 3 of the metal framework ring, and the rubber sleeve 6 in the ring is attached to the inner wall of the metal framework ring 1; a spring groove is arranged on the outer side surface of the sealing lip 4, and the oil sealing spring 2 is arranged in the spring groove; the section of the sealing lip 4 is in an inclined shape with an upper port shrinking inwards, and a polytetrafluoroethylene film layer 7 is attached to the inner side surface of the sealing lip 4; a V-shaped groove capable of storing a trace amount of lubricating oil is formed between the rear end of the polytetrafluoroethylene film layer 7 and the oil storage lip 5. The inner wall of the rubber sleeve in the ring is provided with concave-convex corrugations 8 which are distributed in a horizontally surrounding manner.
According to the composite seal lip valve oil seal based on the structural design, the metal framework ring 1 plays a role in installation and fixation, and the polytetrafluoroethylene film layer 7 is in contact with the valve rod 100 to play a role in sealing. The valve guide 101 is inserted into the rubber sleeve 6 in the ring.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the above-described embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (2)
1. The utility model provides a compound seal lip valve oil seal which characterized in that: comprises a metal framework ring, a rubber body and an oil seal spring; an inner closing-up clamping table is arranged at the upper end opening of the metal framework ring, the rubber body is made of fluororubber, and the rubber body comprises a sealing lip, an oil storage lip and an in-ring rubber sleeve; the sealing lip is positioned above the upper port of the metal framework ring, the oil storage lip is positioned on the inner side of the inner closing port clamping table of the metal framework ring, and the rubber sleeve in the ring is attached to the inner wall of the metal framework ring; the outer side surface of the sealing lip is provided with a spring groove, and the oil sealing spring is arranged in the spring groove; the section of the sealing lip is in an inclined shape with an upper port shrinking inwards, and a polytetrafluoroethylene film layer is attached to the inner side surface of the sealing lip; a V-shaped groove capable of storing a trace amount of lubricating oil is formed between the rear end of the polytetrafluoroethylene film layer and the oil storage lip.
2. The composite seal lip valve oil seal according to claim 1, characterized in that: the inner wall of the rubber sleeve in the ring is provided with concave-convex ripples which are horizontally distributed in a surrounding way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222922836.XU CN218267234U (en) | 2022-11-03 | 2022-11-03 | Composite seal lip valve oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222922836.XU CN218267234U (en) | 2022-11-03 | 2022-11-03 | Composite seal lip valve oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218267234U true CN218267234U (en) | 2023-01-10 |
Family
ID=84754148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222922836.XU Active CN218267234U (en) | 2022-11-03 | 2022-11-03 | Composite seal lip valve oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218267234U (en) |
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2022
- 2022-11-03 CN CN202222922836.XU patent/CN218267234U/en active Active
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