Ship motor front end combined shaft seal

Abstract

The invention discloses a combined shaft seal at the front end of a marine motor, which is arranged at the front end of the motor and consists of a radial shaft seal and an axial shaft seal; The radial shaft seal at the left end is composed of the felt ring I embedded in the radial concave ring groove of the inner hole of the left end cover, which is located on the left side of the bearing and fits with the motor shaft clearance, and the outer wall of the motor shaft. The right end cover on the motor shaft The right side is equipped with an oil throwing ring that rotates with the motor shaft; the radial shaft seal at the right end is made of felt ring II embedded in the radial concave ring groove of the inner hole of the right end cover that is located on the right side of the bearing and fits with the motor shaft clearance, and the outer wall of the motor shaft. Matching structure; further improvement is: the right side of the right end cover is provided with an axial shaft seal formed by fitting the oil throwing ring and the axial concave ring groove of the right end cover. The double radial shaft seal and the axial shaft seal of the present invention form a combined shaft seal with good sealing performance.

Description

technical field [0001] The invention relates to a shaft seal structure, in particular to a shaft seal structure at an output end of a motor. Background technique [0002] The output end of the motor is provided with a shaft seal structure. The existing shaft seal structure at the output end of the motor is a radial shaft seal, which is arranged on the left side of the bearing. The felt ring embedded in the middle is closely matched with the outer wall of the motor shaft. This radial shaft seal has a simple structure, but once the felt ring wears out, the sealing performance will decrease. There is only one seal. Once the sealing performance decreases, the grease for bearing lubrication will be heated. Finally, it directly flows out from the gap between the felt ring embedded in the radial concave ring groove of the inner hole of the left end cover and the outer wall of the motor shaft, thereby deteriorating the lubrication condition of the bearing. Contents of the inventio...

AI Technical Summary

Problems solved by technology

[0002] The output end of the motor is provided with a shaft seal structure. The existing shaft seal structure at the output end of the motor is a radial shaft seal, which is arranged on the left side of the bearing. The felt ring embedded in the middle is closely matched with the outer wall of the motor shaft. This radial shaft seal has a simple structure, but once the felt ring wears out, the sealing performance will decrease. There is only one seal. Once the sealing performance decreases, the grease for bearing lubrication will be heated. Finally, it flows out directly from the gap between the felt ring embedded in the radial concave ring groove of the inner hole of the left end cover and the outer wall of the motor shaft, thereby deteriorating the lubrication condition of the bearing

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