The plate disc dryer is a multi-layer fixed hollow heating circular loading tray, a rotating harrow stirring, a vertical continuous drying equipment mainly based on heat conduction. In this drying process, the heat carrier is passed into the hollow discs of each layer, and the wet material placed on the disc surface is indirectly heated by heat conduction. The moisture evaporates at the operating temperature, and its steam is discharged with the exhaust gas of the equipment, so that qualified dry products can be continuously obtained at the bottom of the equipment. In recent years, many countries have widely used it in the fields of chemicals, dyes, pesticides, plastics, medicine and food, and have continuously improved in use. Compared with traditional drying equipment, it has the advantages of high thermal efficiency, low energy consumption, uniform drying, good product quality, small footprint, less auxiliary equipment, less pollution, continuous production, convenient operation and wide application range. Therefore, it has a broad development prospect in drying technology, which has attracted more and more people's attention and research. According to product performance, drying requirements and processing capacity, the disc dryer adopts a series of measures such as the stepless speed regulation of the main shaft, the manual adjustment of the disc feeder to adjust the height of the sleeve, the control of the temperature distribution of the heating plates of each layer, and the cooling in the final stage. The superior performance of the disc continuous dryer is exerted.