First, use: 1. The following materials are dried in the pharmaceutical, food, chemical and other industries. 2, suitable for slurry. High paste. Powdery materials. 3. Heat sensitive materials requiring low temperature drying. 4, easy to oxidize. Explosive. Strong stimulation. Very toxic materials. 5. Materials requiring organic solvent recovery. Second, the characteristics 1. This machine adopts sandwich and internal stirring simultaneously heating method. The heat transfer surface is large and the thermal efficiency is high. 2. The machine is set to stir, so that the material forms a continuous circulation state in the cylinder, which further improves the uniformity of heat of the material. 3, the machine is set to stir, so that the slurry can be smoothly processed. Paste. Paste material is dry. Third, the working principle: The 耙-type vacuum dryer is a device that uses the characteristics of the water in the material to decrease in boiling point under vacuum. The equipment is indirectly heated with a steam jacket, and the water is evaporated by heat and removed in time. Inside the dryer casing, the molars are driven by the drive shaft, and the ends of the teeth are designed to have an angle with the axis. The spindle rotates in the forward direction to move the material in the axial direction to facilitate drying and discharging.