Jet mill device for magnetic powder

The utility model discloses a jet mill device for magnetic powder. The jet mill device comprises a grinding chamber and a nested sorting unit, the nested sorting unit is arranged at the top of the grinding chamber; the nested sorting unit comprises a first sorting wheel, a second sorting wheel, a material separating barrel and a material discharging barrel; wherein the first sorting wheel surrounds the periphery of the second sorting wheel, the first sorting wheel is communicated with the discharging barrel, and the second sorting wheel is communicated with the material distributing barrel; the discharging barrel surrounds the periphery of the material distributing barrel, and an outlet of the material distributing barrel extends out of the discharging barrel. By adopting the jet mill device disclosed by the utility model, ultrafine powder can be removed to a greater extent, and the granularity and the distribution of magnetic powder are effectively controlled. 本实用新型公开了一种用于磁粉的气流磨装置，包括研磨室和嵌套式分选单元；所述嵌套式分选单元设置于所