Sealing structure of centrifugal pump bearing

The utility model is applicable to the technical field of bearings, and provides a sealing structure of a centrifugal pump bearing, which comprises an inner limit ring, an outer limit ring and a sealing structure, the outer limit ring is sleeved outside the inner limit ring, and a plurality of balls are arranged between the outer surface of the inner limit ring and the inner wall surface of the outer limit ring; the sealing structure comprises two cover plates. According to the sealing structure of the centrifugal pump bearing, after the cover plate is fixed between the inner limiting ring and the outer limiting ring, the second sealing ring is inserted into the second clamping groove, the first sealing ring is inserted into the first clamping groove, labyrinth type sealing is formed, and after the sealing ring is embedded into the sealing ring groove in a clamped mode, the sealing ring is sealed. The second sealing lip abuts against the surface of the inner limiting ring, the first sealing lip abuts against