| 摘要 |
A dust recovery device comprising an air drawing unit and a gravity centrifugal unit, wherein, an air blower in the air drawing unit is used to directly draw dust into a centrifuge cylinder of the gravity centrifugal unit. The air entering the gravity centrifugal unit can form a strong air whirling action by an air vortex generator to throw out the dust blending with air by the air whirling action and to evolve it out of the airflow when it is released from the air vortex. The evolved dust is guided by the wall of the centrifuge cylinder to drop into a dust collecting tank through a dust dropping hole, thereby, the dust is effectively recovered and are no more discharged into the atmosphere along with the airflow.
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