Underwater sludge remover for circular clarifying tanks

摘要

An underwater sludge remover for circular clarifying tanks 1 has a frame 10, a desludging device sweeping along the tank bottom 2 and a drive for the rotating motion of the frame and the desludging device. The desludging device provided is a driven screw conveyor 31 which is arranged radially in the circular clarifying tank 1 and continuously and has a housing 32 and a conveying screw 33 arranged therein. The housing is constructed to be open in the direction of rotation of the screw conveyor 31, forming an intake orifice for the sludge and is provided with a preferably at least partially elastically constructed reception shield for the sludge. <IMAGE>