The working principle of the inverted cone cyclone dust collector is that dust-containing gas enters the dust collector along the tangential direction of the inlet and rotates along the cylinder wall. With the centrifugal force, the dust particles gradually settle into the dust shaking at the lower part of the dust collector. At the same time, the purified gas enters the next stage dust collector along the upper outlet of the dust collector. Dust jitter and dust discharged regularly.