Drying device

The invention provides a drying device. The drying device is provided with an outer shell, a plurality of rotary shafts and a plurality of blades, wherein a charging port is formed on the front portion of the outer shell to allow a material to be treated to be charged in, and a discharge port is formed on the rear portion of the outer shell to allow the heated, dried and treated material to be discharged; the rotary shafts can rotate in the outer shell; the blades can protrude from the outer circumferential surfaces of the rotary shafts to the radial outer side; multiple stages of the blades are arranged in the axial direction of the rotary shafts at intervals; the adjacent rotary shafts rotate in the same direction; and the multiple blades form the shape of a wedge narrowed down towards the front portion of the rotating direction when observed from the radial outer side. 本发明提供一种干燥装置，该干燥装置具备：外壳，其在前部侧形成有投入被处理物的投入口、在后部侧形成有排出加热干燥处理后的被处理物的排出口；多根旋转轴，其设为能够在外壳的内部进行旋转；以及多个叶片，它们从旋转轴的外周面向径向外侧突出，并且在旋转轴的轴线方向上隔开间隔地配置有多级，相