Patent ID: 8882999

Claim:
A centrifugal separation enhanced filtration device comprising: a tank having a fluid inlet, a filtered fluid outlet, an effluent outlet and an internal chamber having an internal chamber wall; a filter membrane positioned within the internal chamber, there being a fluid circulating region in a space between the internal chamber wall and the filter membrane; a circulating cleaning assembly positioned in the fluid circulating region between the chamber wall and the filter membrane, wherein the circulating cleaning assembly includes at least one cleaning element arranged to clean the filter membrane when rotated about the filter; at least one bearing that carries the circulating cleaning assembly and is arranged to enable the circulating cleaning assembly to rotate around the filter membrane during filtering operation of the filtration device, wherein the at least one bearing is arranged to maintain the circulating cleaning assembly in a substantially coaxial alignment with the filter membrane and in a substantially stable longitudinal position relative to the filter membrane as the circulating cleaning assembly is rotated around the filter membrane; and wherein the at least one bearing includes a bearing plate arranged to rotate together with the circulating cleaning assembly, wherein the bearing plate is journaled about a race.