Mixing barrel for preparing grape gray mold prevention and treatment medicament and use method of mixing barrel

The invention discloses a mixing barrel for preparing a grape gray mold prevention and treatment agent and a using method thereof, and relates to the technical field of mixing barrels, the mixing barrel comprises a box body, at least three groups of feeding barrels are arranged at the top of the box body, and a servo motor is in bolted connection with the top in the box body; an output shaft of the servo motor is fixedly connected with the first gear, the first gear is meshed to drive the second gear, the third gear and the fourth gear are rotationally connected with the box body, the second gear is rotationally connected with the top of the first filling barrel, the top of the first filling barrel is communicated with the feeding barrel, and the second gear, the third gear and the fourth gear drive the auger connected below to rotate. A plurality of groups of augers drive materials in a first filling barrel, a second filling barrel and a third filling barrel to be downwards conveyed into a mixing cavity, pro