Patent ID: 6155751
Filing Date: 2000-12-05
Classification: B65G

Abstract:
A pneumatic, material handling system comprising:an outer barrel having an inlet end, an outlet end and an interior cylindrical surface;an accelerating chamber having an inlet end and an outlet end, the inlet end of the accelerating chamber extending concentrically from the outlet end of the outer barrel, the accelerating chamber having a conical interior surface that converges in a direction from the inlet end to the outlet end;an inner barrel having an exterior cylindrical surface with a first end and a second end, the inner barrel located concentrically inside the outer barrel, wherein the outer barrel, the inner barrel and the accelerating chamber are arranged to form a substantially unobstructed annular space between the interior cylindrical surface of the outer barrel and the exterior cylindrical surface of the inner barrel, the annular space extending from the first end of the exterior cylindrical surface of the inner barrel to the conical interior surface of the accelerating chamber;an inlet conduit mounted to the inlet end of the outer barrel to direct gas through the outer barrel into the annular space;wherein the first end of the exterior cylindrical surface of the inner barrel is adjacent the inlet conduit and the second end of the exterior cylindrical surface of the inner barrel is adjacent the accelerating chamber;wherein the inlet conduit is directed tangentially to the interior cylindrical surface of the outer barrel to set up a flow pattern in the annular space such that gas flowing from the inlet conduit into the outer barrel will circulate around the inner barrel and traverse the annular space from the inlet end of the outer barrel toward the outlet end of the outer barrel;wherein the inner barrel is closed at the downstream end.