UNDERWATER WASHER FOR WASHING SURFACE UNDER WATER AND UNDERWATER WASHING DEVICE FOR PURIFYING DIRTY WATER DISCHARGED WHEN UNDER WATER SURFACE IS WASHED BY THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an underwater washer in which safety is improved without lowering washing capability and also by which the side face and the bottom of a water tank are washed without contaminating water in the water tank. ;SOLUTION: A motor is housed in a waterproof case 4. By this motor, a propeller 2 is rotated. A disc brush 1 is fixed to the tip of the propeller 2. By the rotation of the propeller, thrust is generated to press the disc brush 1 against a surface in water, Dirt on the surface in water or the like is rubbed off by the disc brush 1, and is pushed out through a water passage of a safety cover 9 together with water. The dirty water passed through the water passage of the safety cover 8 is pushed away from a discharge port 3c to the outside. By connecting a pipe to the discharge port 3c, the dirty water is discharged to the outside without returning the dirty water to the water tank or is purified by a filter to return it again to the water tank.;COPYRIGHT: (C)1997,JPO