Suspension i.e. pulp suspension, conveying and draining method for paper processing system, involves conveying drained suspension into thick material outlet from device, where pressure existing at outlet is higher than pressure at inlet

摘要

The method involves guiding suspension (S) into a device e.g. centrifugal pump, provided with a driven rotor (1) e.g. pump impeller. The suspension is partially drained utilizing a separation element (3) including a perforated part. A filtrate (F) is passed through the perforated part of the separation element, and is guided from the device via a filtrate outlet (6). The drained suspension separated from the filtrate is conveyed into a thick material outlet (5) from the device, where pressure existing at the outlet is higher than pressure at an inlet (4). An independent claim is also included for a device for executing a suspension conveying and draining method in a paper processing system.