Flow guide device arranged in fluidized bed

The utility model discloses a flow guide device arranged in a fluidized bed, which comprises a conical hollow cavity enclosed by a plurality of fan-shaped blades, and an annular groove with an opening at the top, the annular groove comprises a bottom plate and an annular extension part fixed on the bottom plate; the fan-shaped blades are fixed on the annular groove; wherein every two adjacent fan-shaped blades form a fan-shaped blade combination, each fan-shaped blade combination has a V-shaped included angle, and a gap is formed between every two adjacent fan-shaped blade combinations. The flow guide device is arranged in the fluidized bed and divides the fluidized bed into the induced crystal formation area and the crystal growth area, and mature crystals formed in the crystal growth area slide into the annular groove along the V-shaped included angle structure through the V-shaped included angle structure. Liquid in the induced crystal forming area enters the crystal growing area through gaps between adjac