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        The machine is used for vaccum drying and blending of powder or granular stuffs，which can be dried to have very low content of moisture. Therefore it can be used to further dry the materials with relatively low ontent of moisture. For drying the materials,containing solvents or poisonous gas, the machine also has the advantage of retrieving the former easily. The machine is especially suitable for low temperature drying of materials like antibiotic and vitamin drugs which are temperature sensitive
  The machine is capable to attain high vacuum. Its interior structure is simple and lined with complete smooth surface, therefore it can be cleaned easily and the stuffs within the vessel can be completely discharged.Besides, as the wall is rotating, it does not allow any stuff sticking on its surface, it has high coeffcient of thermal conductivity. The dry time is shorter when the machine compares with the chest dryer. The material wear is less when it compares with the agitator type blender. Its advantages are obvious in obtaining better quantity of production.
  The vessel used in the machine is glass一lined or made of stainless steel, The sealing approach in the machine can be mechanical sealing or stuffing sealing.