Rake dryer is a continuous drying equipment, mainly composed of drying chamber, drum, rake, driving device, heating system and so on. The material enters the drying chamber through the material feeding port, and the drum starts to rotate, and the material continuously turns, hits and rubs in the drum, so that the moisture of the material gradually evaporates. At the same time, the rake continuously scrapes the surface of the material in the drum, making it easier for the water to evaporate. After a period of drying, the material is discharged from the outlet of the drying chamber to complete the drying process.