Patent ID: 11926961
Assignee: ANDRITZ (CHINA) LTD.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC D | IPC D

Claim 2:
3. A pressure screen for separating a feeding stock into an accept portion and a reject portion, comprising
one or more rotors inside a screen with spacing between the screen and rotor, the spacing defining a screening zone into which feeding stock is supplied; and
a dilution water adding apparatus configured for adding dilution water directly into the reject area of the pressure screen, wherein
at least one of the one or more rotors comprises a plurality of foils having one or more ribs on a front and a rear side thereof to enhance the distribution of the dilution water in the screening zone, and
the amount of the dilution water added into the reject flow is 0.8 to 3.5 times the amount of the reject flow.