High-safety microwave heating drying unit

The invention relates to a high-safety microwave heating drying unit. The drying unit comprises a vacuum belt drier. The vacuum belt drier comprises an airtight main tank body distributed transversely. The high-safety microwave heating drying unit is characterized in that a feed port of the front end of the main tank body is connected with a discharge port at the bottom of a granulator through a first sealing valve; a feed port of the top of the granulator is connected with a discharge port of the bottom of a vacuum feed tank through a second sealing valve; a pulverizer, a third sealing valveand a discharge intermediate bin are sequentially connected to a discharge port of the rear end of the main tank body; a vacuum pumping and solvent recovery system is connected to an exhaust port of the main tank body. A microwave heater used for drying materials on a material distributing device and arranged adjacent to the front end of a conveyor belt is arranged adjacent to the feed port of themain tank body and locate