Light material fragment collecting device for garbage disposal

The utility model relates to a light material fragment collecting device for garbage disposal. A feeding hole is formed in the upper part of the box; a transverse baffle plate and an isolation plate are arranged in the box body; a discharging opening is formed in the transverse baffle; an inserting plate is arranged in the transverse baffle plate; a fan A is arranged above the transverse baffle; afiltering exhaust plate A is arranged above the fan A; an air inlet is formed in the box body below the fan A; a stirring device is also arranged above the transverse baffle plate; one end of the stirring device is rotationally arranged on the inner wall of the box; the other end is rotationally arranged on the transmission box; the transmission box is fixedly arranged on the isolation plate; a motor is arranged in the isolation plate and rotationally connected with the stirring device through a bevel gear, a fan B is arranged on the lower portion of the isolation plate, a filtering exhaust plate B is arranged outsid