Upper-exhaust air-drying granulation device

The invention relates to an upper-exhaust air-drying granulation device. The device comprises a granulation chamber and a rotating disc; the lower portion of the granulation chamber is communicated with a blower nozzle; the top end of the granulation chamber is communicated with an exhaust pipeline; the exhaust pipeline is formed by communicating a vertical pipeline and a transverse pipeline; an inner cylinder is arranged in the center of the vertical pipeline and penetrates through the exhaust pipeline upwards; the rotating disc is arranged in the inner cylinder; different 1/N vertical pipeline cross section areas are blocked layer by layer through N-1 horizontal partition plates from bottom to top between the outer side of the inner cylinder and the inner wall of the exhaust pipeline, so that the vertical pipeline is divided into N exhaust areas of the 1/N vertical pipeline cross sections, the exhaust pipeline is enabled to uniformly exhaust air along the N exhaust areas; the rotating disc is used for recei