DUST-COLLECTING SYSTEM Russian patent published in 2009 - IPC B01D45/12 B04C3/00 B04C7/00 B04C9/00 

FIELD: motors and pumps.

SUBSTANCE: dust-collecting system includes the source of cleaned gas, pipelines, fan, two dust-collecting units installed at counter-current swirling flows of gas. Each dust-collecting unit is represented with the cylindrical body with the tapered hopper, the first tangential inlet nozzle, inlet swirler in the second inlet nozzle and dust extracting beveled washer installed on its outer surface. The body is also provided with axial outlet nozzle for the cleaned gas and dust discharge nozzle where flood-gate is installed. The system is also provided with the source of clean air, the chokes installed on the pipelines and separating concentrator including cylindrical swirling chamber linked with inlet chamber provided with tangential inlet. There is axial pipe in the swirling chamber to discharge gas flow with less dust concentration. The swirling chamber outlet is located at the opposite side from inlet chamber. Side nozzle is mounted on the surface of swirling chamber to discharge gas flow with higher dust concentration. Tapered hopper of the fist dust-collecting unit is provided with dust-laden gas outlet nozzle. Cleaned gas source is connected to the tangential inlet of separating concentrator having side nozzle connected to the tangential inlet nozzle of the first dust-collecting unit. The axial outlet nozzle of the first dust-collecting unit is linked with the suction nozzle of the fan. Clean air source is coupled with the pipeline provided with choke and with inlet swirler of the first dust-collecting unit. Besides, axial pipe of the separating concentrator is coupled with the pipeline provided with choke and with the pipeline connecting clean gas source with inlet swirler of the first dust-collecting unit. The dust-laden gas nozzle of the first dust-collecting unit is linked with the tangential inlet nozzle and inlet swirler of the second dust-collecting unit. The axial outlet nozzle of the second dust-collecting unit is provided with the suction nozzle of the fan.

EFFECT: effective cleaning if dust-laden gas flow containing highly-disperse particles.

3 dwg, 1 ex