Waterproof double-row angular contact ball bearing for maintaining operation of water pump

The invention provides a waterproof double-row angular contact ball bearing for maintaining operation of a water pump, and relates to the technical field of water pump bearings. A fixed plate is fixed on the bottom plate, a threaded hole is formed in the fixed plate, and a water pump is mounted at the upper end of the fixed plate through a bolt; the mounting seat is mounted on the bottom plate through bolts; the inner ring and the outer ring of the double-row angular contact ball bearing are lubricated through the oil cup, the dustproof covers are screwed to the left ends and the right ends of the first bearing bush and the second bearing bush in a threaded mode, the through holes are formed in the dustproof covers, the brushes are fixed in the through holes, and dust can be prevented from entering the bearing to cause noise through the brushes; the waterproof covers are mounted at the left and right ends of the inner ring and the outer ring, so that water flow can be prevented from entering the bearing to ru