DRY SUBMERGED MOTOR PUMP AND WATER-COOLED STRUCTURE FOR BEARING ON COUNTER LOAD SIDE OF DRY SUBMERGED MOTOR

摘要

PROBLEM TO BE SOLVED: To provide a dry submerged motor pump and a dry submerged motor having a longer-life bearing, a stator coil insulated at a higher grade and a lighter weight by restricting the temperature rise of the bearing on the counter load side. SOLUTION: A cooling water passage 4 is provided in a bracket 2 on the counter load side of the dry submerged motor 1 for the dry submerged motor pump, so that frictional heat generated in the bearing 5 on the counter load side during operation can be rapidly cooled by a surrounding cool water.