| 摘要 |
FIELD: physical or chemical processes and apparatus. ^ SUBSTANCE: air-cleaning device comprises units of cyclones provided with dust-collecting chambers having hatch for discharging dust. The bottom of the chambers is provided with pads which are made of a flexible material and whose front edges are secured to the bottom section of the discharging hatch. With the use of ties, the pad can be turned inside out through the hatch together with dust and be emptied into a container. ^ EFFECT: improved performance. ^ 3 dwg
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