Dust aerosol generating device

The utility model discloses a dust aerosol generating device, which mainly comprises a constant pressure module, a powder cutting module, a mixed flow seat, a static electricity eliminator, a distance measuring sensor and the like, the powder cutting module comprises a charging barrel, a charging barrel seat, a scraper, a rotating shaft and a motor, the motor drives the scraper to rotate through the rotating shaft to cut solid powder filled at the bottom in the charging barrel, and the mixed flow seat is connected with the static electricity eliminator. Compressed gas entering through the charging barrel seat carries the cut powder to enter the flow mixing seat through a gas channel in the middle of the rotating shaft, and finally aerosol flows out of the flow mixing seat after being further mixed in the flow mixing seat. By controlling the flow of compressed gas entering the powder cutting module and the flow mixing seat and measuring and calculating the powder cutting speed through the distance measuring se