Special cleaning device for outer wall of high-pressure flushing pipe of dredging vehicle

The utility model relates to a special cleaning device for the outer wall of a high-pressure flushing pipe of a dredging vehicle, and belongs to the technical field of special devices for sanitation vehicles. A reel support used for winding a high-pressure flushing pipe, a water tank used for supplying water to the high-pressure flushing pipe, a pump, a pressure water pipe and a valve are arranged on a dredging vehicle matched with the device. The device comprises a horizontal sliding drawing frame arranged at the bottom of the reel support, a horizontal rotating arm hinged to one side of the horizontal sliding drawing frame and a cleaning tank arranged at one end of the horizontal rotating arm. The upper end and the lower end of the cleaning tank are open; an annular water spraying pipe is arranged on the inner circumferential wall of the cleaning tank, a plurality of nozzles are arranged on the annular water spraying pipe, and the annular water spraying pipe communicates with the pressure water pipe through