Drying device

The invention discloses a drying device comprising a furnace body, a feeding device, a material receiving device, an air feeding device and a stirring device. The feeding device is used for adding materials into the furnace body. The material receiving device is used for collecting the dried materials in the furnace body. The air feeding device introduces external hot air into the furnace body through a first air inlet. The stirring device is used for stirring and crushing the materials. The stirring device comprises a rotating shaft which penetrates into a cavity of the furnace body. The rotating shaft is provided with an air-through cavity. The air-through cavity is provided with a plurality of air jet holes, and the air jet directions of the air jet holes are neither overlapped with notparallel to the stirring direction of the stirring shaft and the stirring direction of a blade. When the materials are dried, the hot air is introduced into the cavity of the furnace body through thefirst air inlet, the rota