| 摘要 |
<p>The device for the separating of foreign substances, appearing during the operating of a tool machine (10), from a gas stream has a fan impeller (30) housed in a casing (28) and with blades through which the gas mixture containing the foreign substances is drawn. At least one element consisting of reciprocally moving members is provided in the gas stream created by the fan impeller and this element is rotationally driven by the fan impeller. A return line (42) is provided for foreign substances separated from the gas mixture.</p> |
