Lifting device for particle size control of boiling granulation dryer

The utility model discloses a lifting device for particle size control of a boiling granulation dryer, and belongs to the technical field of boiling granulation dryers. The lifting device comprises an upper shell, a fluidized bed, a material feeding area and a material collecting area, a circular groove is formed between the upper shell and the fluidized bed, the two sides of the circular groove extend outwards and are symmetrically provided with fixing supports, and the fixing supports are movably connected with the circular groove; a semicircular groove is formed in the right side of the fluidized bed, an arc-shaped movable cavity is formed in the semicircular groove, a spray head is movably connected into the arc-shaped movable cavity, and the back of the fluidized bed is connected with a heater through a hot air pipe. The defects that an existing boiling granulation dryer is prone to explosion, the adhesiveness of pharmaceutical particles is poor, the diameter is small, the amount of fine powder is large,