Features: 1. Being adapted the large area heating way, its heat conducting area is large and its heat efficiency is high. 2. Being installed stirring in the machine, it makes raw material in cylinder form the state of continuous circle inside the cylinder, so the uniformity to be heated of raw material is raised greatly. 3. Being installed stirring in the machine, pulpiness, pasty mixture or powder raw material can be dried easily. Principle: It is an new horizontal batch-type vacuum dryer. The moisture of wet material will be evaporated by heat transmission. The stirrer with squeegee will remove material on hot surface and move in the container to form cycle flow. The evaporated moisture will be discharged by vacuum pump. Applications: The following raw materials from pharmaceutical, foodstuff, chemical industry and so on can be dried. 1. Suitable for pulpiness, pasty mixture or powder raw material. 2. Thermal sensitive raw materials having the requirement to dry at lower temperature. 3. Raw materials that are easy to oxidized or exploded and have strong irritative or toxic. 4. Raw materials that need to recover solvent.