Patent ID: 6938846

Claim:
Apparatus for screening a fibrous suspension comprising a housing, a rotary screen mounted for rotation within said housing, said rotary screen including an upper end, a lower end, and a knob ring disposed at said lower end of said rotary screen, a screen chamber between said rotary screen and said housing including an inner surface defined by said rotary screen, an outer surface and a lower surface, an inlet for providing said fibrous suspension to said screen chamber, a reject outlet for withdrawing a reject portion of said fibrous suspension from said screen chamber, an accept outlet for withdrawing an accept portion of said fibrous suspension from said rotary screen, an outer screen chamber surface defining said outer surface of said screen chamber, a bottom screen chamber surface defining said lower surface of said screen chamber, a slot ring associated with said bottom screen chamber surface and adjacent to said knob ring defining a gap therebetween, and adjustment means for movably adjusting the location of said slot means whereby the size of said gap may be adjusted and said fibrous suspension may be substantially prevented from passing from said screen chamber through said gap, said adjustment means being at a location whereby said gap may be adjusted from outside of said housing.