二手回轉真空干燥機   在密閉的夾層中通入熱能源（如熱水，低壓蒸汽或導熱油）熱量經內殼傳給被干燥物料。在動力驅動下，灌體作緩慢旋轉，罐內物科不斷地混合從而達到強化干燥的目的。

   二手回轉真空干燥機    物料處于真空狀態，蒸汽壓下降使物料表面的水份（容劑）達到飽和狀態而蒸發了，并由真空泵及時排出回收。物料內部的水份（溶劑）不斷的向表面滲透、蒸發、排出、三個過程不斷進行，物料在很短時間內達到干燥目的。
Supply heat energy (such as hot water, steam of low pressure or heat conduction oil) into the closed interlayer. The heat will be transferred to materials to be dried by inner shell. The tank body will be driven to rotate slowly. The materials inside the tank are mixed to strength drying purpose.
The materials are under vacuum status. Steam pressure will decrease which make the water on material surface (solvent) become saturated and then evaporate. The water will be discharged and recycled by the vacuum pump immediay. Water (solvent) inside the material is permeated, evaporated and discharged from the surface. The said three processes happen constantly and the materials will be dried in a short period.