Air mill and cyclone separator, dust collector, induced draft fan composed of a set of crushing system. Dry compressed air is filtered through the high-speed laval nozzle jet into the crushing chamber, in high-pressure air more than the intersection of the material being repeated collision, friction, shearing and crushing, after crushing material with the updraft movement under the action of a draught fan to grading, rotating at high speed the classification of turbine under the action of the strong centrifugal force, make the thickness of material separation, The fine particles that meet the particle size requirements are collected by cyclone separator and dust collector through the classification wheel, and the coarse particles are dropped to the grinding zone for further grinding.
After the material enters the crushing chamber through the spiral feeder, the impact energy of high-speed air flow is sprayed out by several nozzles set relatively, and the collision and friction caused by the rapid expansion of the air flow is suspended boiling in the fluidized bed to crush the material. The coarse and fine mixed powder is driven by the negative pressure airflow through the turbine classification device set at the top. The fine powder is forced through the classification device and collected by the cyclone collector and bag dust collector. The coarse powder is thrown to the four walls by gravity and the centrifugal force generated by the high-speed rotating classification device and settles back to the crushing chamber to continue crushing.
As the crushing kinetic energy of the high pressure air flow into the crushing chamber outside the stabilized air storage bag as a flow distribution station, the air flow through the Laval nozzle accelerated into supersonic flow into the grinding chamber, at the same time, the material is accelerated into the churi nozzle grinding chamber for synchronous crushing. Because laval nozzle and crushing chamber installed into an acute Angle, so the high-speed jet flow in the crushing chamber to drive the material to do circular movement, particles and particles and fixed target board wall surface impact, collision, friction and crushing. The fine particles are driven by centripetal airflow into the central outlet pipe of the crusher into the cyclone separator for collection, and the coarse powder is thrown to the wall of the crushing chamber for circular movement and continues to be crushed under the action of centrifugal force.
