Patent ID: 6241102
Filing Date: 2001-06-05
Classification: B07B,D21D

Abstract:
Apparatus for screening fiber suspensions comprising a housing, an annular screen disposed within said housing, a rotor having an outer surface defining a first end and a second end disposed within said annular screen for rotating relative to said annular screen, pulsation wings disposed between said outer surface of said rotor and said annular screen for relative rotation with said rotor whereby a screening zone having a first end and a second end is formed between said rotor and said annular screen, an inlet for said fiber suspension for feeding said fiber suspension to said first end of said screening zone, an accept outlet for a portion of said fiber suspension which passes through said annular screen, a reject outlet for a portion of said fiber suspension which does not pass through said annular screen, and a dilution liquid nozzle for supplying a dilution liquid to said screening zone, said dilution liquid nozzle disposed proximate to said reject outlet and directing said dilution liquid into said screening zone along said outer surface of said rotor.