Pneumatic blending device

The utility model discloses a pneumatic blending device which comprises a tank body, a feeding port, a discharging port, a compressor, an air inlet pipe and a pulse generator, the feeding port is formed in the left end of the top of the tank body, the discharging port is formed in the bottom of the tank body, a motor is arranged in the middle of the top of the tank body, and the bottom of the motor is connected with a connecting shaft. Stirring rods are distributed at the outer end of the connecting shaft in a welded mode, electric heating wires are distributed in the stirring rods, a heatingdevice is arranged at the left end of the motor and electrically connected to the electric heating wires through wires, and a circulating pump is arranged at the bottom end of the left portion of thetank body. A first annular pulse tube and a second annular pulse tube are distributed at the bottom of the inner side of the tank body, an air outlet tube is connected to the right ends of the tops ofthe first annular pulse tu