Patent ID: 6364579
Filing Date: 2002-04-02
Classification: B01D

Abstract:
An apparatus for separating fibrous material conveyed by and suspended in air, said apparatus comprising:a housing having an inlet for receiving the air and fibrous material suspended therein, an air outlet, and a fibers outlet; a screen at said housing air outlet allowing air to pass but generally restricting the fibrous material from exiting therethrough; wherein the air and the fibrous material entering said inlet are at a higher pressure than said air outlet thereby accumulating fibrous material on said screen as air passes therethrough; rotating vanes between said inlet and said fibers outlet generally restricting air from exiting through said fibers outlet; a scalping blade adapted to travel over and at a distance from said screen; and, wherein fibrous material accumulated on said screen beyond said distance is removed from said screen by said scalping blade and fall through said fibers outlet, and fibrous material between said scalping blade and said screen remains on said screen forming a fibrous filter mat whereby smaller fibrous material can be filtered and separated from the air.