Patent ID: 7740761

Claim:
A basket suitable for use in a vibratory screening apparatus, for use in removing solids from a liquid and solids mixture feed, said basket mounting a stack of at least three superposed screen assemblies, with superposed screen assemblies being separated from each other by a respective flow directing tray, said stack of at least three screen assemblies being provided with a flow distributor formed and arranged so as to be switchable between a plurality of different flow directing configurations, including: a) a parallel processing configuration in which said flow distributor receives filtrate from a primary upper screen assembly and divides said filtrate into at least a first feed stream and a second feed stream and directs said feed streams onto respective remaining first and second ones of said stack of screen assemblies, and receives filtrate from a respective remaining screen assembly, from said respective flow directing tray(s); and b) an intensive screening configuration in which the whole of the filtrate from a primary upper screen assembly is directed onto a first remaining screen assembly and the whole of the filtrate from said first remaining screen assembly is directed onto a second remaining screen assembly; wherein the flow distributor is downstream of the primary upper screen assembly and when set for parallel or series operation distributes the filtrate from the primary upper screen to the remaining first and second screen assemblies.