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Combination oil seal with sealing ring

A combined oil seal and belt seal technology, which is applied in the direction of engine seals, engine components, mechanical equipment, etc., can solve the problems of easy leakage of lubricating oil and difficulty in ensuring the dimensional accuracy of the outer circumference of the oil seal, etc., to achieve improved service life, good rigidity, and connection firm effect

Inactive Publication Date: 2014-04-09
NINGBO FENGMAO FAR EAST RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problem that the dimensional accuracy of the oil seal outer periphery is difficult to guarantee when the current oil seal is manufactured, and the lubricating oil is easy to leak between the outer periphery of the oil seal and the inner periphery of the oil seal seat and between the sealing lip and the shaft, and to provide a manufacturing The dimensional accuracy of the outer circumference of the oil seal is easy to guarantee and the lubricating oil is not easy to leak between the outer circumference of the oil seal and the inner circumference of the oil seal seat and between the sealing lip and the shaft.

Method used

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Effect test

Embodiment 1

[0020] Embodiment 1, as attached figure 1 Shown: a combined oil seal with a sealing ring, including two self-tightening coil springs 1, a skeleton, a main oil seal body 2 with a main sealing lip 21 and a dustproof lip 22, a secondary oil seal body 3 with a secondary sealing lip 31 and sealing ring 4.

[0021] The main oil seal body 2 has a main reinforcement layer 23, the material of the main oil seal body 2 is nitrile rubber, the material of the main reinforcement layer 23 is polytetrafluoroethylene, the main reinforcement layer 23 is located inside the main sealing lip 21 and is in contact with The main sealing lip 21 is vulcanized, cross-linked and fixed; the auxiliary oil seal body 3 has an auxiliary reinforcement layer 32, the material of the auxiliary oil seal body 3 is nitrile rubber, the material of the auxiliary reinforcement layer 32 is polytetrafluoroethylene, and the auxiliary reinforcement layer 32 is located inside the auxiliary sealing lip 31 and is vulcanized,...

Embodiment 2

[0031] Embodiment 2, as attached figure 2 Shown: a combined oil seal with a sealing ring, including two self-tightening coil springs 1, a skeleton, a main oil seal body 2 with a main sealing lip 21 and a dustproof lip 22, a secondary oil seal body 3 with a secondary sealing lip 31 and sealing ring 4.

[0032] The main oil seal body 2 has a main reinforcement layer 23, the material of the main oil seal body 2 is rubber, the material of the main reinforcement layer 23 is polytetrafluoroethylene, the main reinforcement layer 23 is located inside the main sealing lip 21 and is connected to the main seal The lip 21 is vulcanized, cross-linked and fixed; the auxiliary oil seal body 3 has an auxiliary reinforcement layer 32, the material of the auxiliary oil seal body 3 is rubber, the material of the auxiliary reinforcement layer 32 is polytetrafluoroethylene, and the auxiliary reinforcement layer 32 is located on the auxiliary seal The inner side of the lip 31 is vulcanized, cross...

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Abstract

The invention relates to the field of sealing member and aims at providing a combination oil seal with a sealing ring, wherein the size precision of the outer periphery of the oil seal is easy to ensure in the manufacturing process, the lubrication oil between the outer periphery of the oil seal and the inner periphery of the oil seal seat and the lubrication oil between a seal lip and a shaft is hard to leak. The combination oil seal with the sealing ring comprises a frame, a self-tight spiral spring and a main oil seal body provided with a main seal lip and a dustproof lip; the frame comprises a frame ring, and a main connection ring fixedly connected with the front end of the frame ring; the main oil seal body is connected with the main connection ring; the oil seal further comprises a sub oil seal body and a sealing ring, wherein the sub oil seal body is provided with the sub seal lip; the frame is provided with a sub connection ring fixedly connected with the frame ring; the sub oil seal is connected with the sub connection ring; two self-tight spiral springs are respectively sleeved at the outer periphery of the main oil seal body and the outer periphery of the sub oil seal body; a sealing slot for containing the sealing ring is arranged at the outer periphery of the frame ring. The combination oil seal with the sealing ring has the following advantages the size precision of the outer periphery of the oil seal is easy to ensure in the manufacturing process; the lubrication oil between the outer periphery of the oil seal and the inner periphery of the oil seal seat, and the lubrication oil between the seal lip and the shaft is hard to leak.

Description

technical field [0001] The invention relates to the field of seals, in particular to a combined oil seal with a sealing ring which is easy to ensure the dimensional accuracy of the outer circumference of the oil seal during manufacture and which prevents lubricating oil from leaking between the outer circumference of the oil seal and the inner circumference of the oil seal seat and between the sealing lip and the shaft. . Background technique [0002] Oil seals are generally used to seal lubricating oil on the shaft. The function of the oil seal is to isolate the oil chamber from the outside world, which not only prevents the lubricating oil in the oil chamber from leaking out but also prevents dust from entering and causing the shaft to be damaged by friction; the utility model of Chinese patent announcement No. CN201992072U is disclosed A seal, especially a narrow frame oil seal. The oil seal includes a skeleton, a self-tightening coil spring, a main sealing lip and a dus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/32F16J15/3208F16J15/3232F16J15/3248F16J15/3284
Inventor 蒋春雷
Owner NINGBO FENGMAO FAR EAST RUBBER