Microwave dryer

The utility model relates to a microwave drying machine which comprises a microwave main machine, a conveying belt, a hopper, a window plate, a screen and a pneumatic conveying pipe. And a magnetron for generating microwaves is arranged in the microwave host. The conveying belt is arranged below the microwave main machine, and a drying channel is formed between the conveying belt and the microwave main machine. The hopper is arranged at the tail end of the conveying belt, a feeding port is formed in the top of the hopper, a discharging port is formed in the bottom of the hopper, and a window is formed in a side plate of the hopper. The window plate is used for opening and closing the window. And the screen is arranged in the hopper and below the window. And the pneumatic conveying pipe is communicated with the discharge hole and conveys materials under the action of negative pressure of gas. Materials are screened on the screen, and caked materials are blocked above the screen and cannot pass through the scre