Mud-water separation device

The utility model provides a mud-water separation device. The mud-water separation device comprises a rack, a treatment box, a precipitation structure and a conveying structure, the rack comprises a body and a moving part used for controlling the body to move. The precipitation structure comprises a box body, a filtering group and a discharging assembly, the filtering group and the discharging assembly are sequentially arranged in the box body in the advancing direction of muddy water, the box body is arranged on the body, and the discharging assembly is used for pushing precipitated impurities out of the box body; and the conveying structure is arranged on the body and is used for conveying the impurities separated by the precipitation structure. The settling tank device solves the problems that the existing settling tank device cannot further treat separated particle impurities, internal sediments are not easy to clean, the structure is complex, and the existing settling tank device is inconvenient to move.