Patent ID: 11883766
Assignee: KADANT BLACK CLAWSON, LLC
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A disc filter for dewatering a fiber suspension, the disc filter comprising:
a vessel comprising an inlet positioned in a wall of the vessel, the inlet introducing the fiber suspension into the vessel;
a rotor shaft comprising a shaft axis of rotation positioned in a shaft plane, wherein the shaft plane is a horizontal plane;
at least one filter element coupled to the rotor shaft such that the at least one filter element rotates with the rotor shaft about the shaft axis of rotation; and
at least one injector positioned in the wall of the vessel, the at least one injector introducing a secondary flow of liquid into the vessel, wherein:
the at least one injector is located in the wall of the vessel at an injector elevation angle αI that is greater than −44 degrees and less than or equal to +22 degrees relative to the shaft plane, wherein the injector elevation angle αI of the at least one injector refers to a position of the at least one injector along the wall of the vessel relative to the shaft plane; and
a primary flow vector of the at least one injector is orthogonal to the shaft axis of rotation.