| 摘要 |
The invention resides in dust collecting apparatus combining the principles of so-called "dry-cyclone" and "wet-cyclone" dust collectors, subjecting dust-laden air or gas successively to centrifugal action first in a "dry-phase" vortex during which relatively large entrained particles, particularly together with some of the smaller ones are ejected from the air or gas stream which then enters a "wet-phase" vortex coaxial with the "dry-phase" one into which a liquid is introduced and broken into a spray or mist to dampen and coagulate the smaller dust particles and effect their centrifugal separation in a sludge or slurry whereby substantially all solid particles are extracted from the air or gas before its discharge from the apparatus.
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