A disk feeder comprises a shell, a motor, an adjustment handle, lifting lead screws, a connecting scraper, a rotating tray, a connecting flange frame, adjustment hand wheels, lifting nut frames, a feeding pipe, a lifting pipe, a discharging pipe, an adjustment mechanism fixing frame, a scraper adjustment lead screw, a pull plate, a movable scraper, a scraper shaft and a scraper support. The motor is fixed to the bottom of the shell. A rotating shaft of the motor is connected with the bottom of the rotating tray. The lifting pipe is arranged in the shell and fixed into the shell through the lifting nut frames. The adjustment hand wheels are arranged at the upper end of the lifting lead screws. The discharging pipe is arranged on one side of the lifting pipe. The feeding pipe is arranged in the lifting pipe. The movable scraper is arranged between the lifting pipe and the discharging pipe. The adjustment mechanism fixing frame is arranged on the inner wall of the shell. The movable scraper is connected with the connecting scraper. The feeder comprises a plurality of discharging and feeding adjustment mechanisms, powder can be adjusted according to requirements, and therefore the quality of aerated concrete bricks can be greatly improved.