Cyclone dust collector uses centrifugal force generated in the process of airflow rotation to separate dust from dusty airflow. After entering the cleaner tangentially from the inlet of the cleaner, the dusty airflow rotates downward along the outer wall. This downward rotating airflow is called outer vortex. After reaching the bottom of the cone, the outer vortex turns upward, rotates upward along the axis, and is finally discharged from the discharge pipe. This upward airflow becomes an internal vortex. The downward outer vortex and the upward inner vortex rotate in the same direction, that is, clockwise or counterclockwise. When the airflow rotates, the dust is thrown to the outer wall under the action of centrifugal force, and the dust reaching the outer wall falls into the ash hopper along the wall under the joint action of downward rotating airflow and gravity.