DW-series belt dryer with multi-layer is a continuous convective drying processor of which the drying of product takes place on ventilated conveyor belts. The food drying machine is widely applied for mass production of continuous drying for sheet, strip pellet material with better ventilation property, especially for the materials that can not bear high temperature such as dehydrated vegetables, Chinese herbal pieces of high moisture content. Amisy belt drying machine is produced by the professional development engineers based on many years practical experience.