Finned tube heat exchanger deashing device

The utility model belongs to the technical field of silicon industry waste heat utilization, and particularly relates to a finned tube heat exchanger deashing device which comprises a pair of mutually-parallel rails, a fixed frame, a moving frame, a brush shaft, a cleaning brush, a driving mechanism and a steering transmission mechanism. The rails are arranged on the fixed frame, the moving frame is provided with at least one pair of wheels and arranged on the rails movably through the wheels, one of the wheels is a power output wheel, the brush shaft is rotatably arranged on the moving frame and parallelly arranged relative to the rails, the cleaning brush is arranged on the brush shaft, the driving mechanism is connected to the moving frame and drives the moving frame to move along the rails, and the steering transmission mechanism is arranged between the power output wheel and the brush shaft so as to drive the brush shaft to rotate when the power output wheel rolls along the rails. The cleaning brush removes ash adhered on finned tubes through reciprocating motion and self rotation, and heat exchange efficiency of a heat exchanger is improved substantially.