The utility model relates to a high durability and convenient use, belongs to mineral processing technical field. Concrete structure does, wide in application. The main tributary fagging other end supports at the cell body terminal surface, the main tributary fagging is swept the bubble board with vertical support plate now and circumference and is connected into the frame, in order to solve the technical problem, lean on the vertical support plate installation driven shaft of center post one side, it is main, that disposes that the surface area sweeps bubble finned plate between the driven shaft sweeps the bubble belt, the driving shaft disposes traction motor, it is equipped with brokenly the bubble device to sweep bubble board position by the circumference of driven shaft one end. The utility model discloses a mode of the broken bubble in center avoids taking in the concentrated pond ore deposit foam by broken back, and the particulate mineral of its a large amount of desorptions still can be brought into the problem of spout hole and overflow weir by the overflow water, have prevented that the spout hole from blocking.