| 摘要 |
A dust collecting device (100) installed inside of an air conduit (51) for collecting airborne particles and for filtrating the air consists of a dust collecting tubes set (1). Said dust collecting tubes set (1) comprises of a plurality of dust collecting tubes (2a-2f) having different diameters. Said tubes (2a-2f) are arranged in a concentric fashion by having a tube with smaller diameter covered by one having larger diameter. Each of said dust collecting tubes (2a-2f) is applied with a layer of adhesive layer (3) for coupling with each other and for adhering particles contained in the air. Each tube of the tube set (1) can be removed from said air conduit (51) by pulling a pull string (4a-4f) provided at two extreme ends of each dust collecting tube (2a-2f).
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