Cleaning device for inner wall of wall cylinder of carbon black granulator

The invention relates to a cleaning device for the inner wall of a wall cylinder of a carbon black granulator. The cleaning device comprises a driving mechanism, a cleaning mechanism and a negative pressure suction hood; the driving mechanism is connected with the cleaning mechanism, and the negative pressure suction hood is arranged on the side, not connected with the driving mechanism, of the cleaning mechanism; the driving mechanism comprises a fixed end cover, a gear box, a sawtooth shaft and a rocking handle; the cleaning mechanism comprises a fixed connecting piece, a first driving motor, an adjustable telescopic rod and a cleaner; and the adjustable telescopic rod comprises a fixed base, a fixed baffle, a positioning nut, an adjustable screw rod, an inner thread sleeve and a cleaner connecting piece. The cleaning device can automatically and efficiently remove carbon black attached to the inner wall of the pelletizer wall cylinder, meanwhile, carbon black dust generated in the cleaning process is recyc