Ash removal device for furnace tube of tobacco curing barn

The utility model relates to a flue-cured tobacco house furnace tube ash removing device which comprises a rolling brush, a transmission rod and a driving piece driving the transmission rod to rotate,one end of the transmission rod is connected with the rolling brush, the other end of the transmission rod is connected with an output shaft of the driving piece, the rolling brush, the transmissionrod and the output shaft of the driving piece are coaxial, and nylon wire bristles are spirally arranged on the periphery of the rolling brush in the axial direction. When in use, the rolling brush extends into the innermost part of the furnace tube; starting drive, the driving piece drives the rolling brush to rotate through the transmission rod; accumulated ash on the inner wall of the furnace tube is scraped off by nylon wire bristles on the rolling brush; the whole device is slowly moved backwards, and the rolling brush is rotated and adjusted to be in a reverse rotation state; due to thefact that the nylon wire br