Surface scrubbing machine

摘要

A machine for cleaning outer wall of a high-rise building pushed by a rotating propeller which is at the back of the machine outside a case having rotating brushes chambers, driven by an engine or a motor to press against a wall to be cleaned comprises: a case divided into chambers having an opened-anterior side where edges of all the chambers having rubber plates or brushes mounted all along their rims. In each chamber, there is a rotating brush (or brushes) for scrubbing where detergent solution or water may be ejected onto the rotating brush. At the back of each chamber there is a tube for draining used liquid away or keeping in a reservoir of the machine. There are steel plates mounted vertically one to the top and one to the bottom of the case, where a rubber plate is mounted horizontally along the top steel plate to help wiping off liquid film left on the surface of the wall. There are ski-shape steel elements mounted thereto, two at the top steel plate and two at the bottom steel plate to help optimizing force exerted by the rotating brush onto the surface. The machine is hung through a cable from the top floor of the building where pulling and shifting the cable helps moving the machine vertically or horizontally along the wall. This is a machine which is moving while cleaning or scrubbing and can work under atmospheric pressure.