| 摘要 |
<p>The filtering device comprises a drum provided with a filter medium along its cylindrical surface and with one or more air intakes for sucking in the dust deposited on the surface of the filter medium and is characterized by the fact that: - the drum supporting the filter medium revolves around its own axis; - at least one blowing nozzle is disposed on the side of the surface of the filter medium from which the filtered air flows; - at least one suction nozzle is disposed on the side of the surface of the filter medium which receives the flow of dust-laden air, in a position opposite that of the aforesaid blowing nozzle; - means are provided for controlling the continuous or intermittent rotation of the drum.</p> |
