Material cleaning device for closed space area of material channel

The invention discloses a material cleaning device for a closed space area of a material channel. The material cleaning device comprises a material cleaning device shell assembly and a material channel shell flange. The material channel shell flange is arranged at an opening in the side face of the material channel shell, the material cleaning device shell assembly comprises a device barrel, the lower end of the device barrel is connected with the material channel shell flange, and the device barrel can rotate; two device limiting core blocks are arranged on the inner side of the device barrel, a screw shaft limiting groove and two sliding block limiting grooves are formed between the two device limiting core blocks, the screw shaft limiting groove and a rod sliding block in the middle of a screw shaft form a moving pair, and the two sliding block limiting grooves and a sliding connecting piece, a left material cleaning rod piece and a right material cleaning rod piece form moving pairs respectively. The scre