| 摘要 |
A vortex cleaner for separating a gaseous or liquid suspension, as for instance a paper pulp suspension, into fractions comprises an elongate vortex chamber which has a circular cross-section and tapers gradually, over at least part of its axial length, towards one axial end of the chamber. The larger end of the vortex chamber is provided with a tangential inlet for the suspension to be treated and an axial outlet for a lighter fraction of the treated suspension. The smaller end of the vortex chamber is provided with an axial outlet for a heavier fraction of the treated suspension. The tapering portion of the vortex chamber consists of a plurality of chamber sections, which are disposed one after the other in axial direction and are in direct communication with each other. Each such chamber section has a smaller diameter than the immediately preceding chamber section, as seen from the larger end of the vortex chamber, and has its center line displaced laterally relative to the center line of the immediately preceding chamber section, whereby a crescent-shaped ledge facing towards the larger end of the vortex chamber is formed at the transition from each chamber section to the immediately following chamber section. The chamber sections may be cylindrical or, preferably, truncated conical and divergent towards the smaller end of the vortex chamber.
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