Patent ID: 7191700
Filing Date: 2007-03-20
Classification: B30B

Abstract:
1. A solid-liquid separator for separating liquid from a material for treatment, said separator comprising: a plurality of movable plate, and fixed plates, each of said movable and fixed plates having a hole; first and second screws, each of said screws having a blade, said screws extending through said hole in said movable and fixed plates, said screws being disposed so that said blade of said first screw overlaps said blade from said second screw; each of said blades adapted for spinning so that said material is urged through said separator; and said movable plates adapted for being urged by said rotating blades; said screws each having an outer diameter and a center axis, said screws being mutually separated by a predetermined distance; said hole in each of said movable plates being an elongated hole defined by first and second circles, said circles overlapping and having substantially equal diameters, said hole diameters being larger than respective diameters of said first and second screws, said circles each having a center axis, said center axes of said circles being mutually separated by a predetermined distance, said distance between said center axes of said circles being smaller than said distance between said center axes of said screws; and said hole in each of said movable plates being further defined by two opposing tangents connecting said first and second circles.