Decanter centrifuge for thickening at high rates.

摘要

A decanter centrifuge is provided with a rotatable bowl and a coaxially-mounted conveyor which is adapted for rotation at a differential speed with respect to the bowl. The conveyor includes a central hub extending for at least one portion of the longitudinal length of the conveyor. A series of radially-extending ribs which transverse an open feed zone. Longitudinal ribs are also attached to the hub section. The longitudinal ribs and transversing ribs supporting a ribbon conveyor flight. The open feed zone serves to decrease turbulence during the introduction of the feed into the bowl. The radially-extending ribs both outside the feed zone and the remaining portions of the centrifuge bowl serve to reduce turbulence within the bowl and to control acceleration of the feed material during separation. The overall structure of the centrifuge serves to decrease the likelihood of washout is rotodynamically stiffer and thus less prone to vibration, is lighter and less expensive in construction and creates a stable operation. <IMAGE>