| 摘要 |
<p>With very fine dusts, such as aluminum dust, cement and the like, it is difficult to pick up and collect the dust so as to discharge the conveying air into the atmosphere free of dust. A suction cleaning machine which achieves this has, in combination, a main mouthpiece having at least one blower nozzle directed from the exterior towards the centre of the mouthpiece and a suction pipe located inwardly of the mouthpiece; an auxiliary nozzle arranged movably relative to the main mouthpiece and having a suction duct; a common duct, into which the suction pipe and the suction duct open; a coarse separator arranged before a multi-cyclone separator; a duct connected to the inlet of a blower for guiding the cyclone discharge air; a separating device at the blower outlet for directing a first portion of the conveyed air to the blower nozzle in the main mouthpiece and into a second portion thereof to a further separator; and an exhaust air blower arranged at the outlet of the further separator.</p> |
