| 摘要 |
The device has a suction hose (4) comprising a nozzle (5) arranged in an inner area of an insulator (1). Filters e.g. high-efficiency particulate air (HEPA) filters (8, 9) and product filter (6), and a vacuum cleaner (11) are arranged at an outer side of the insulator, where air required for sucking a particle-like material is guided between the insulator, filters and the vacuum cleaner in a circle. The filters are provided as a barrier between the inner area of the insulator and an outer area, where the air filters are designed according to a push-push-principle. |
