Roll neck sealing device of oil film bearing

Abstract

This invention discloses a roll neck sealing device of an oil film bearing, which comprises a sealing cover, a foot-shaped sealer, a buffer ring, a water retaining ring, and a retaining cushion, wherein an annular bump is arranged on the middle part of an inner circumference face of the sealing cover; one face of the sealing cover is fixedly mounted on a bearing base of a rolling mill; the other face thereof is provided with an annular water retaining arm inclined towards the outer side; the inner side of the annular water retaining arm is provided with an annular groove; the foot-shaped sealer is mounted among an oil film bearing taper sleeve, a sealing cover and a roller shaft neck so as to form an oil sealing part and a water sealing part; the longitudinal cross section of the buffer ring is U-shaped; an inside support leg of the buffer ring is capable of supporting the foot-shaped sealer; an outside support leg is extended into the annular groove; the terminal of the outside support leg is provided with a roundabout structure; the bottom surface of the buffer ring is capable of supporting the end face of the roller shaft neck; the outer side of the water retaining ring is mounted on the end face of the roller shaft neck; the inner circumference face of the water retaining ring is compressed on the outer side face of the water retaining arm; and the retaining cushion is mounted between the water retaining arm and the annular groove and is extended so as to shield an opening of the annular groove. The sealing device disclosed by this utility model improves sealing effect and stability of the oil film bearing.

Description

technical field [0001] The invention relates to a rolling mill, in particular to a sealing device for a rolling mill oil film bearing on a roll. Background technique [0002] At present, a large number of rolling mills at home and abroad use oil film bearings, and the running quality of oil film bearings directly affects the running quality of rolling mills. The working environment of rolling mill oil film bearings is very harsh. In addition to being attacked by a large amount of oxides and other dirt during the rolling process, it also has to withstand the erosion of a large amount of high-pressure cooling water. The oil film bearing roll neck needs to be sealed. The main function of the seal includes two aspects: first, to prevent the cooling water and dirt from invading the oil film bearing. The cooling water and dirt will deteriorate the lubrication conditions, directly affect the formation of the oil film, and even damage the bearing. At the same time, it also emulsifi...

AI Technical Summary

Problems solved by technology

[0004] The current sealing device installed between the oil film bearing and the roll neck has the following problems in the sealing structure: because the water seal 10 is exposed to the harsh environment of high-pressure water washing and a large amount of oxides and other dirt, the roll 1 is in the rolling process. There is axial movement in the middle, and the end face of the roll in contact with the water seal 10 wears after long-term use, resulting in the failure of the water seal 101, causing cooling water and a large amount of oxides and other dirt to invade the oil film bearing, and deteriorating the lubrication conditions in the oil film bearing , directly affects the formation of the oil film, and even damages the bearing.

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