Jet mill device

The utility model relates to the technical field of hexagonal boron nitride production equipment, in particular to an airflow mill device which comprises a supporting table, an air compressor, a crushing barrel and a discharging barrel are sequentially arranged on the supporting table from left to right, the air compressor is connected with the crushing barrel through an air inlet pipe, and the discharging barrel is installed on the right side of the crushing barrel; a feeding pipe is arranged at the top of the crushing barrel, a feeding funnel is arranged above the feeding pipe, and a crushing roller group is arranged in the feeding pipe; a plurality of triangular convex blocks are distributed on the inner wall of the crushing cylinder; a discharging partition plate is arranged at the right end of the crushing barrel, a plurality of discharging holes are formed in the discharging partition plate, and the discharging holes extend rightwards to penetrate into the discharging barrel. The jet mill device disclos