Drying device and method of special wood powder for plastic-wood sectional material

The invention relates to a drying device and a drying method of materials and particularly relates to a drying device and a drying method of special wood powder for a plastic-wood sectional material, and belongs to the technical field of materials. The drying device comprises a bracket, wherein the bracket is internally provided with a machine barrel; the upper surface of the bracket is a closed plane; a feeding tank and an exhausting opening are respectively arranged on and formed in the sealed plane; a circulating cooling tank is fixed on one side of the bracket; the circulating cooling tank is connected with an impurity storage tank; the top of the impurity storage tank is connected with a draught fan and the bottom of the impurity storage tank is connected with a liquid sealing groove; heating electric control cabinets are arranged on the two sides of the bottom of the bracket; the machine barrel is provided with an interlayer; a heat conduction pipe is arranged in the interlayer; a shaft rod is arranged in the machine barrel; a spiral heat conduction pipe is wound around the shaft rod; the shaft rod is connected with a motor; and a discharging box is arranged on one side of the machine barrel. The drying device has the beneficial effects of low cost, simple process, green environmental friendliness and the like, and is suitable for industrial production.