Flour mixer with adjustable rotating speed

The utility model relates to the technical field of flour stirring, in particular to a rotating-speed-adjustable flour stirring machine which comprises a discharging box, a stirring barrel is arranged on the upper side of the discharging box, a supporting seat is arranged on the outer side of the stirring barrel, a supporting frame is arranged on the upper side of the supporting seat, and a speed-adjusting stirring assembly is arranged at the upper end of the supporting frame. An active speed regulation assembly is arranged on the supporting frame on one side of the speed regulation stirring assembly, and the speed regulation stirring assembly is matched with the active speed regulation assembly through descending to realize rotation speed regulation. According to the stirring device, the U-shaped plate is driven by the air cylinder to move, so that the stirring paddle, the first gear and the second gear move along with the U-shaped plate, the first gear and the second gear can be meshed with the driving whee