Energy-saving and high-efficiency pneumatic dryer and drying method thereof for extract of medicine of Yi nationality

The invention discloses an energy-saving and high-efficiency pneumatic dryer and a drying method thereof for an extract of a medicine of the Yi nationality. The pneumatic drier comprises an air blower, a heater, a pneumatic drying pipe, a feeding device, a cyclone separator and an induced draft fan; a cooling jacket is arranged on the outer wall of the pneumatic drying pipe; an air-cooling air outlet is formed in the upper part of the cooling jacket, and an air-cooling air inlet is formed in the lower part of the cooling jacket; an air outlet of the air blower communicates with the air-cooling air inlet and an air inlet of the heater respectively through a proportional control valve; the air inlet of the heater further communicates with the air-cooling air outlet; an air outlet of the heater sequentially communicates with the pneumatic drying pipe, the cyclone separator and the induced draft fan; the bottom of the cyclone separator is provided with a discharging valve; and the feeding device is arranged at th