| 摘要 |
A fine dust collecting apparatus is provided, where a screw is installed in a sucking unit located in a side of a back housing, thereby efficiently collecting fine dust which is not well collected by an existing dust collector. A fine dust collecting apparatus comprises the following units. A back housing(10) is equipped with an sucking unit(11) and a discharging unit(12). A plurality of back filters(20) collect fine dust included in air. A plurality of venturi tubes(30) linked with each back filter to be fixed transfer the filtered air supplied by the back filters. An adaptor(40) has a plurality of through-holes(41) in which air is passed from the venturi tubes. A screw(50) is mounted inside a sucking pipe(13) in a longitudinal direction so that fine dust particles can collide with inflow air.
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