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Chinese-doughnut-shaped oil-back line oil seal

An oil return line, twist-shaped technology, applied in the field of twist-shaped oil return line oil seal, can solve the problems of short service life, poor sealing effect of oil return line oil seal, etc. Effect

Inactive Publication Date: 2015-06-24
RIZHAO DONGDU RUBBER & PLASTIC PROD
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AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned problems existing in the prior art field, the object of the present invention is to provide a twist-shaped oil return line oil seal, which solves the problems of poor sealing effect and short service life of the traditional oil return line oil seal.

Method used

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  • Chinese-doughnut-shaped oil-back line oil seal

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Embodiment

[0015] refer to figure 1 , the twist-shaped oil return line oil seal of this embodiment includes an oil seal frame 2, a rubber elastic body and a compression spring 1, the rubber elastic body 3 is connected to the oil seal frame 2, and the compression spring 1 is arranged on the rubber Inside the elastic body 3 , the rubber elastic body 3 is attached with a two-way cross-type oil return line 4 .

[0016] The rubber elastic body 3 is attached with a two-way cross oil return line 4 in a twist shape. The twist-shaped oil return line structure has a strong pumping effect and can prevent leakage well. In addition, it can return oil in two directions and improve the sealing performance; rubber The cross-section of the two-way cross-type oil return line 4 attached to the elastomer 3 is D-shaped, semicircular or arc-shaped, which can reduce the friction surface, improve the wear resistance of the product, and prolong the service life of the product.

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Abstract

The invention discloses a Chinese-doughnut-shaped oil-back line oil seal which comprises an oil seal frame, a rubber elastic body and a tightening spring. The lower end of the rubber elastic body is connected to one side of the oil seal frame. The tightening spring is arranged in the rubber elastic body. A double-way crossing type oil-back line is attached to the rubber elastic body. The oil seal has high pumping effect, leakage can be well prevented, in addition, double-way oil returning can be achieved, sealing performance is improved, meanwhile, an oil line cross section is in a D shape or a semicircle shape or an arc shape, a friction face can be decreased, the abrasion resistance of a product is improved, and product performance is prolonged.

Description

technical field [0001] The invention belongs to an oil seal, in particular to a twist-shaped oil return line oil seal. Background technique [0002] At present, the general oil seal structure of the two-way oil return line structure is composed of an oil seal frame, a rubber elastic body and a compression spring. The rubber elastic body is connected to the oil seal frame, and the compression spring is arranged in the rubber elastic body. shape or grid structure. [0003] The notification number is CN2388421Y, the application number is 98236241.2, and the patent of the dynamic rotary shaft oil seal called two-way oil return line just discloses such a kind of two-way oil return line structure oil seal. Due to the limitation of the structure, the oil seal of this bidirectional oil return line structure seriously affects the sealing effect and the service life of the oil seal where the rotating shaft needs to rotate in both directions. At the same time, the product has poor r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/24
CPCF16J15/3208F16J15/3244
Inventor 张守彦徐淑强李光旭李汉华
Owner RIZHAO DONGDU RUBBER & PLASTIC PROD
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