Food dryer is a kind of monotonous equipment with continuous consumption in batches. Secondary heating methods include electric heating, steam heating and hot air heating. Secondly, the principle is to spread the material evenly on the mesh belt. The mesh belt adopts 12-60 mesh steel wire mesh belt, which is dragged by the transmission device and moves back and forth in the monotonous machine. Hot air flows between materials, and water vapor is discharged from dehumidification holes, thus achieving monotonous purpose. The length of the box consists of standard sections. In order not to waste space, the dryer can be made into multi-layer, with two rooms and three floors and two rooms and five floors, with a length of 6.

The secondary heating methods of food dryer include electric heating, steam heating and hot air heating.