The air from the air swept mill enters the powder concentrator with the material from the lower air duct. After rectifying by the inner cone, it slows down and rises along the circular channel between the outer cone and the inner cone. The coarse powder among them slides into the coarse powder receiving cylinder along the side wall of the outer cone through the gravity settlement to achieve the gravity separation. The air after the gravity separation carries the material particles under the guidance of the guide vane and the rotation of the rotor, under the guidance of the guide vane and the rotor A stable horizontal eddy current powder separation area is formed between rotors. The dust particles moving in the eddy current will be affected by gravity, wind force and rotating centrifugal force at the same time. The small and slight particles will be absorbed into the rotor with the air flow and flow through the air outlet pipe and enter the rear dust collector as the finished fine powder to be separated. The coarse and heavy particles will fall down, collect into the coarse powder receiving barrel through the inner cone, and return to the mill for regrinding. The fineness of the finished product can be effectively adjusted by changing the rotor speed. This answer is recommended by Ren Jilan, a science education classification expert. He has praised it and stepped on it. What's your comment on this answer? Commentary

The separator is installed at the outlet of the pulverizer to separate the pulverized coal particles larger than a certain set particle size and return to the pulverizer for continuous pulverizing, which is divided into dynamic separator and static separator. The principle is that particles of different sizes have different tracks under the same wind speed. The question is that there is no moving (rotating) mechanical equipment in the static separator.