Screw extruder for separation of liquid out of suspension, preferably slurry or fibrous material, comprises screw shaft, which is rotated in cylindrical shell and presses suspension through annular gap from inlet opening to outlet opening

摘要

Screw extruder for separation of liquid out of a suspension, preferably slurry or fibrous material, comprises a screw shaft (1) rotating preferably in a cylindrical shell (2), where the suspension is pressed through a annular gap (3) formed between the shell and the screw shaft, from an inlet opening (4) to an outlet opening (5). Liquid discharge openings are provided in the area of the annular gap. Multiple screw shafts promote the suspension from respective at least one separate inlet opening to a common outlet opening.