Reverse waterproof device for oil film bearing

Abstract

The invention discloses a reverse waterproof device for an oil film bearing. The device comprises a water seal and a sealing cover, the water seal is fixed on a roller provided with the oil film bearing, the sealing cover is fastened on a bearing seat of the oil film bearing, a wear-resistant part is arranged on the sealing cover, and a water seal lip of the water seal is kept contact with the wear-resistant part. The wear-resistant part is a wear-resistant surface arranged on the end surface of the sealing cover or a wear-resistant ring arranged on the end surface of the sealing cover. According to the reverse waterproof device for the oil film bearing, the water seal is fixed on the end surface of the roller, and the water seal lip is always kept contact with the wear-resistant surface or the wear-resistant ring on the sealing cover, so that the sealing waterproof effect of the oil film bearing is effectively improved, impurities such as cooling water and scale are prevented from falling into the oil film bearing during rolling, and normal use of the oil film bearing is ensured; and in addition, due to the fact that the water seal lip is not in contact with the end surface of the roller, so that the end surface of the roller cannot be abraded, the roller does not need to be repaired, and the use and maintenance cost of the roller is effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of oil film bearings, in particular to a reverse waterproof device for oil film bearings. Background technique [0002] As an important part of the rolling mill, the normal operation of the oil film bearing is directly restricted by the sealing performance. Such as figure 1 As shown, the waterproof structure of the oil film bearing in the prior art includes a water seal 13 installed on the sealing cover 12 fixed to the oil film bearing housing 11, and the water seal lip 131 of the water seal 13 is in contact with the roll end face 141 of the roll 14 . With the rotation of the roll 14, the long-term contact between the water seal lip 131 and the roll end face 141 will cause the self-abrasion of the water seal lip 131, resulting in poor sealing and waterproof effect of the waterproof structure of the oil film bearing, resulting in increased water intake in the oil film bearing. Large, the oil quality of the...

AI Technical Summary

Problems solved by technology

Due to the large weight and volume of the roll, it is necessary to return the roll to the roll factory for repair, and the transportation cost is high; it is not easy to process the ring groove on the end face of the roll and install the screw hole for the wear ring, and it is necessary to ensure the flatness of the wear ring after the wear ring is installed , higher processing cost

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