具有结构简单操作方便，使用周期长，性能稳定可靠，蒸汽耗晕小，适用性能强，产品质量好，特别适用于不耐高温、易燃、调温下易氧化的膏状物料的干燥，该机经用户长期使用证明是一良好的干燥设备。原理：被干燥物料从壳体上方正中间加入，在不断正反转动的耙齿的搅伴下，物料轴向来回走动，与壳体内壁接触的表面不断新，受到蒸汽的间接加热，耙齿的均匀搅拌，粉碎棒的粉碎，使物料表面水分有利的排出，气化的水分经干式除尘器、湿式除尘器、冷凝器，从真空泵出口处放空。
It enjoys advantages as easy & convenient operation, long life circle, stable & reliable performance, low steam consumption, strong adaptability and good quality which are especially applicable for drying paste materials which cannot resist high temperature, flammable and is easy to be oxidized under temperature adjusting. It is proved to be a good drying device after long-time use by the users. The principles are: add the materials to be dried from middle of upper part of the shell body. The materials move in axial direction back and forth under positive and negative rotation of the rake (stirring). The surface which contacts with inner wall of the shell keeps renewing. Under indirect heating of the steam, even stirring by the rake and crushing by the crushing bar, it is easier for water on material surface to be discharged. The gasified water is emptied at outlet of vacuum pump by dry-type collector, wet type collector and condenser.