Sealing mechanism of oil film bearing on roller shaft

Abstract

The invention discloses a sealing mechanism of an oil film bearing on a roller shaft. The sealing mechanism comprises a sealing cover, a water seal, an aluminum ring and a multi-limb sealing ring, the section of the aluminum ring is n-shaped, the aluminum ring is provided with an annular plate, the inner circumference of one side of the annular plate is connected with an annular guide plate, the outer circumference of one side of the annular plate is connected with a baffle with an L-shaped section, the end of the guide plate abuts against the multi-limb sealing ring, centrifugal blades are evenly distributed on the other side of the annular plate in the circumferential direction at intervals, each centrifugal blade is sleeved with a rubber buffer cushion matched with the outer contour shape of the centrifugal blade, and the aluminum ring abuts against the end face of a roller through the rubber buffer cushion outside the centrifugal blades on the other side of the annular plate. The multi-limb sealing ring can be accurately positioned after the sealing mechanism is applied, and the problem that accumulated water breaks through the sealing defense line of the multi-limb sealing ring and enters the oil film bearing can be effectively prevented.

Description

technical field [0001] The invention relates to a sealing structure of an oil film bearing of a rolling mill, in particular to a sealing mechanism of an oil film bearing on a rolling shaft. Background technique [0002] The rolling force of the large-scale rolling mills of steel enterprises is relatively large. Generally, oil film bearings are used to provide strong support for the end shafts on both sides of the roll. The oil film bearings are installed in the bearing housings, and a good oil supply environment is required to provide lubrication during operation. And support, which requires a reliable sealing device between the fixed bearing seat and the end face of the rotating roll to resist the intrusion of a large amount of cooling water and impurities such as iron oxide scale from the outside, while preventing the leakage of internal grease. [0003] The DF type sealing structure is mostly used in the existing oil film bearing sealing device. This sealing structure is ...

AI Technical Summary

Problems solved by technology

However, the following shortcomings were found during the use of this aluminum ring structure: first, the strength of the rubber nails of the aluminum ring is insufficient, and it is easy to be squeezed and crushed, which eventually leads to inaccurate positioning of the multi-leg sealing ring and seal failure. , when there is a lot of water inflow, the labyrinth seal and water rejection effect of the aluminum ring are very limited, and a large amount of accumulated water may break through the sealing defense line of the multi-leg seal ring and enter the inside of the oil film bearing, destroying the safe operation of the oil film bearing

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