Patent ID: 8617357
Filing Date: 2013-12-31
Classification: B30B,D21C,D21F

Abstract:
1. A twin wire press comprising top and bottom endless wires for separating solid and liquid from a primary solid-liquid suspension, the twin wire press comprising: a web formed between said wires; a support frame; a first dewatering section mounted to the support frame and including a wedge interspace area which has an inlet and an outlet; the first dewatering section further including first and second tension roll assemblies mounted to the support frame upstream the wedge interspace inlet for directing respectively the top and bottom endless wires into the wedge interspace for movement from the inlet to the outlet thereof; the wedge interspace acting on the top and bottom wires in movement therein for collecting a first quantity of liquid from the primary solid-liquid suspension received therein so as to yield at the outlet a secondary solid-liquid suspension which is denser than the primary solid-liquid; a secondary dewatering section mounted to the support frame adjacent the outlet of the first dewatering section for receiving the secondary solid-liquid suspension therefrom; a press roll assembly mounted on the support frame; the top and bottom wires cooperating in movement with the press roll assembly to further extract liquid from the secondary solid-liquid suspension to yield a tertiary solid-liquid suspension; a drive roll assembly mounted to the support frame that cooperates with first and second tension roll assemblies to move the top and bottom wires from the inlet of the wedge interspace to the second dewatering section via the outlet of the wedge interspace then back to the inlet of the wedge interspace; and wherein said press roll assembly comprises a first press roll rotatably mounted to the support frame, a second press roll mounted onto the first roll for rotation in unison with the first roll via i) two longitudinal end plates that are pivotably secured to the support frame at a respective longitudinal end thereof and ii) at least one cylinder having a fixed end secured to the support frame and a working end secured to one of the longitudinal end plates for biasing the second roll toward the first roll and for applying pressure therebetween.