Oil seal with good liquid leakage prevention effect

Abstract

The invention relates to the field of compressors, in particular to an oil seal with a good liquid leakage prevention effect. The oil seal comprises an oil seal shell body, wherein the oil seal body comprises a shell and a sealing ring, the sealing ring is located in the shell, a pressure stabilizing cavity is formed in the sealing ring, a middle spring groove is formed in the inner wall of the pressure stabilizing cavity, a ring spring is arranged in the middle spring groove, spring gaps which are evenly distributed are formed in the inner wall of one side of the ring spring, an elastic pieceis naturally formed between every two adjacent spring gaps, a spring ridge is arranged on the outer wall of the top of each elastic piece, a spring groove is formed in the bottom of each elastic piece, spring peaks are arranged on the outer walls of the bottoms of reeds on the two sides of each spring groove, and a middle sealing lip is integrally formed on the inner wall of the sealing ring. According to the oil seal, the ring spring is utilized, the deformation quantity of the elastic pieces in the ring spring is smaller, the middle sealing lip is tightly attached to a rotating shaft through the elastic pieces on the ring spring, then the situation that the deformation quantity of the ring spring is larger due to high pressure in the compressor is avoided, and therefore, the performanceof a good oil seal liquid leakage prevention effect is achieved and refrigerating fluid in the compressor is prevented from flowing out.

Description

technical field [0001] The invention relates to the field of compressors, in particular to an oil seal with good liquid leakage prevention effect. Background technique [0002] Oil seals are used to prevent fluid or solid particles from leaking from the joints of the device, and to prevent external impurities, such as dust, moisture, oil, etc., from invading the internal parts of mechanical equipment. It is used to isolate the oil chamber from the outside world. Oil seal inside, dust-proof outside, widely used in the compressor of household appliances, because the inside of the compressor is a high-pressure working environment, so the tightness of the oil seal inside the compressor is required to be higher. [0003] Chinese Patent No. 201710508929.9 discloses a skeleton oil seal combination, which includes a first oil seal body and a second oil seal body, the first oil seal body includes an annular metal skeleton with an L-shaped axial section, and the outer ring side of the...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an oil seal with good anti-leakage effect, so as to solve the problems of large spring deformation and single style of spring in the above-mentioned background technology, which lead to easy liquid leakage and inconvenient assembly and disassembly.

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