Apparatus for dynamic classification of suspensions of solid bodies in liquids

Claim 1

In an apparatus for dynamic classification of suspensions of solid bodies in liquids, consisting of a vertically arranged cylindrical body with a conical bottom terminated with an outlet stub pipe, said apparatus being provided with an inlet stub pipe situated tangentially and a rotatable vertically mounted cylindrical perforated element situated co-axially within said cylindrical body, said element being covered with a gauze mesh and mounted on a vertically arranged hollow drive shaft, said apparatus being characterized in that a cylindrical space is provided between the inner wall of the body and the gauze defining an agitation zone in which there are mounted a plurality of stationary annular baffles which do not contact either the body or the gauze, each said baffle having an outwardly and downwardly sloping profile between an inner circular edge and an outer circular edge, and are generally nested one beneath the other in a vertical arrangement and so spaced from one another that the outer edge of the upper annular baffle lies below the inner edge of the next lower annular baffle, and the rotatable cylindrical element has connected to its bottom a thickening means in the form of a worm screw rotatable within the conical bottom part of said body.