Patent ID: 6290067
Filing Date: 2001-09-18
Classification: B01D,D21D

Abstract:
A screening apparatus for separating fiber suspensions comprising:a housing including an interior and an inlet for said fiber suspension;a stationary tubular screen having a first end, a second end, and an axial length therebetween dividing said interior of said housing into a central chamber for receiving said fiber suspension from said inlet and an outer accept chamber for receiving an accept portion of said fiber suspension which has passed through said stationary tubular screen;a rotor journalled on said housing for rotation within said central chamber coaxially with said stationary tubular screen, said rotor including a rotationally symmetrical element;a reject chamber for receiving a reject portion of said fiber suspension at said second end of said stationary tubular screen; anddilution liquid supply means for supplying a dilution liquid to said central chamber, said dilution liquid supply means including a stationary annular wall portion extending in the radial direction and juxtaposed with said rotationally symmetrical element of said rotor thereby defining an annular passage for said dilution liquid, said stationary annular wall portion being spaced from said second end of said stationary tubular screen.