Drying device

The invention discloses a drying device which comprises a furnace body, a feeding device for feeding materials into the furnace body, a receiving device for collecting the materials dried in the furnace body, an air supplying device for introducing external hot air into the furnace body through a first air inlet, and a stirring device for stirring and smashing the materials. The stirring device comprises a rotary shaft arranged in a cavity of the furnace body in a penetrating way; the rotary shaft is provided with an ventilating cavity; a plurality of air nozzles are formed in the ventilatingcavity; air injection directions of the air nozzles are misaligned to and unparallel to a stirring direction of a stirring shaft and stirring directions of blades; and when the materials are dried, the hot air is introduced into the cavity of the furnace body through the first air inlet, the rotary shaft rotates to drive the stirring device on the rotary shaft to continuously stir the materials along a radial direction an