Disk refiner
AssigneeEnso-Gutzeit Osakeyhtio
InventorsPekka Ruokolainen, Juhani Kyytsonen
Life of this patent
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Abstract
Disk refiner for cellulose, paper or other equivalent pulp, with two mutually opposed blade disks, at least one of which is rotatable, carrying grinding surfaces facing each other and having within the circumference defined by the grinding surface of one blade disk, in the pulp inlet duct, a sieve plate concentric with the blade disks. Within the sieve plate there is a concentric guide plate so that between the sieve plate and the guide plate there is defined a gap through which the pulp to be refined goes to the grinding surfaces.
Claims7
In a disk refiner for cellulose, paper or other equivalent pulp including two mutually opposed blade disks, one of which is rotatable and acts as a rotor and the other of which acts as a stator, a pulp inlet duct, opposed grinding surfaces facing each other formed on said blade disks, and a sieve plate concentric with said blade disks located within the circumference defined by the grinding surface of one of said blade disks in the pulp inlet duct, the improvement comprising that within said sieve plate there is a concentric guide plate so that between the sieve plate and the guide plate there is defined a gap along which the pulp to be refined passes to the grinding surfaces, and wherein the sieve plate is affixed to the grinding disk acting as a rotor and the guide plate is affixed to the grinding plate acting as a stator.
Dependencies are inferred from the claim text.