Multifunctional, environment-friendly and energy-saving vacuum belt type drying unit

The utility model relates to a multifunctional, environment-friendly and energy-saving vacuum belt type drying unit. The multifunctional, environment-friendly and energy-saving vacuum belt type drying unit comprises a vacuum belt type drying machine, wherein the vacuum belt type drying machine comprises a transversely-distributed airtight main tank body and is characterized in that a feeding port formed in the front end of the main tank body is connected with a bottom discharging port of a granulator through a first seal valve, and a top feeding port of the granulator is connected with a bottom discharging port of a vacuum feeding tank through a second seal valve. A discharging port formed in the rear end of the main tank body is sequentially connected with a smashing machine, a third seal valve and a discharging middle bin. A vacuum pumping and solvent recovery system is connected to an exhaust port of the main tank body. A microwave heater for drying materials on a material distributor and materials close to the front end of a conveying belt is arranged above the material distributor, close to the feeding port of the main tank body, and a steal heater, a hot water heater and a cooler which are parallel to the conveying belt are distributed in the front-back direction of the inner side of the conveying belt sequentially.