Bearing pedestal sealing device for roller of rolling mill

Abstract

The invention provides a bearing pedestal sealing device for a roller of a rolling mill. The bearing pedestal sealing device comprises a labyrinth-type sealing inner ring sleeved on a shaft neck of the roller, wherein a plurality of turns of rectangular sealing cavities I are formed on the outer circumferential surface of the sealing inner ring; a sealing outer cover is sleeved on the outer side of the sealing inner ring and is in a split type; rectangular sealing cavities II matched with the rectangular sealing cavities I are formed on the inner side face of the sealing outer cover; a through hole is formed in the sealing outer cover; a transmittance cover matched with the sealing inner ring is arranged between a bearing pedestal and the sealing outer cover; an oil seal is arranged on an inner ring of the transmittance cover; and the sealing outer cover and the transmittance cover are fixedly connected with the bearing pedestal arranged at the end of the roller through connection pieces. The device is good in sealing effect, simple in structure and convenient to dismantle; and a phenomenon that a bearing is burned-out can be effectively avoided.

Description

technical field [0001] The invention relates to a rolling mill, in particular to a bearing housing sealing device for rolling mill rolls. Background technique [0002] In the metallurgical industry, during the rolling process of the rolling mill, a large amount of emulsion will splash around, and a large amount of emulsion will often enter the sealing device of the bearing seat of the roller between the rolling mill stands, resulting in the loss of grease in the bearing, thus As a result, the life of the bearing is shortened sharply, or even damaged, so that the roller cannot operate normally, and the bearing and sealing device of the roller need to be replaced frequently. In order to overcome this problem, at present, oil seals are mostly used in factories to prevent the emulsion from entering the bearing. However, this sealing structure is not tightly sealed and cannot prevent the emulsion from entering well. The long-term operation of the roller will cause the bearing to ...

AI Technical Summary

Problems solved by technology

[0002] In the metallurgical industry, during the rolling process of the rolling mill, a large amount of emulsion will splash around, and a large amount of emulsion will often enter the sealing device of the bearing seat of the roller between the rolling mill stands, resulting in the loss of grease in the bearing, thus The life of the bearing is shortened sharply, or even damaged, so that the roller cannot operate normally, and the bearing and sealing device of the roller need to be replaced frequently

In order to overcome this problem, at present, oil seals are mostly used in factories to prevent the emulsion from entering the bearing. However, this sealing structure is not tightly sealed and cannot prevent the emulsion from entering well. The long-term operation of the roller will cause the bearing to burn. Bad, the roller is worn out, which brings great difficulties to the production operation and maintenance personnel

Images