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

Claim 0:
1. A method for dilution for a pressure screen having a rotor rotating inside a screen with spacing between the screen and rotor, the spacing defining a screening zone into which feeding stock is supplied, with a portion of feeding stock passing through the screen into an accept area and becoming accept, and the remaining feeding stock discharged into a reject area as reject flow, comprising
adding dilution water directly into the reject area in an amount equal to 0.8 to 3.5 times of the amount of the reject flow, wherein
the rotor 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.