Multi-lip framework oil seal

Abstract

The invention relates to the technical field of mechanical equipment, in particular to a multi-lip framework oil seal. The multi-lip framework oil seal solves the problems that the existing frameworkoil seal cannot effectively avoid the damage of the outer particles to the oil seal lip, and the ability of controlling oil seal gauze effect and the ability of protecting high value shaft parts is poor. The multi-lip framework oil seal comprises a framework and an annular oil seal body; the outer surface of the oil seal body is provided with an annular outer ring; the outer ring is aslant arranged relative to the horizontal plane, peripheral surface of the outer ring is provided with a radial direction dust prevention lip and multiple radial direction sealing lips, and the inner circumferenceof the outer ring is provided with external tension springs in the corresponding positions with each radial direction sealing lip; and the inner surface of the oil seal body is provided with an innerring, and the inner ring is matched with a rotating shaft. The multi-lip framework oil seal can avoid the damage of outer granular materials to the oil seal lip, the gauze effect in the oil seal workcan be effectively controlled and the oil seal has a compensation function of abrasion loss, the multi-lip is high in leakproofness, and maximum protection of high value parts is achieved.

Description

technical field [0001] The invention belongs to the technical field of mechanical equipment, and in particular relates to a multi-lip skeleton oil seal. Background technique [0002] Lubricating oil leakage caused by wear and tear is one of the common problems in mechanical equipment. Oil leakage will cause serious consequences such as bearing burnout and environmental pollution. At present, the most widely used seal on the market is the rotary shaft lip seal, also known as the skeleton oil seal. The oil seal usually includes a main lip and an auxiliary lip. The main lip is inside and is in contact with the lubricating oil in the cavity to undertake the sealing function, and the auxiliary lip is outside to undertake the dustproof function. The sealing mechanism of the skeleton oil seal is that there is an oil film controlled by the edge of the oil seal between the oil seal and the shaft, and this oil film has fluid lubrication characteristics. Under the effect of the surfa...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the existing skeleton oil seal has too high requirements on the machining accuracy and hardness of shaft parts, it cannot effectively avoid damage to the oil seal lip by external particulate matter, and the ability to control the oil seal gauze effect and protect high-value shaft parts is poor , at the same time, there are problems of short service life and difficult replacement of the oil seal, and a multi-lip skeleton oil seal is provided

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