Patent ID: 6796749
Filing Date: 2004-09-28
Classification: B65G

Abstract:
A system for pneumatically conveying a bulk particulate material comprising:means for holding said material, having an inlet and an outlet; a first material transport line segment including a first conduit formed of a gas permeable material having an inlet communicating with said outlet of said holding means and an outlet, defining a material flow passageway, and a second conduit section formed of a gas impermeable material spaced from and encompassing said first conduit section thereof, defining a plenum; a second material transport line segment including a first conduit formed of a gas permeable material having an inlet communicating with said outlet of said first conduit of said first segment, defining a continuation of said material flow passageway, and an outlet, and a second conduit section formed of a gas impermeable material spaced from and encompassing said first conduit section thereof, defining a plenum; a third material transport line segment including a first conduit formed of a gas permeable material having an inlet communicable with said outlet of said first conduit of said first segment, defining a continuation of said material flow passageway, and an outlet communicating with said inlet of said holding means, and a second conduit formed of a gas impermeable material spaced from and encompassing said first conduit section thereof, defining a plenum; means for selectively communicating said material flow passageway of said first segment with one of the material flow passageways of said second and third segments; means for supplying a gas under pressure to said plenums, causing gas to penetrate said first conduits to fluidize material flowing in said passageway; and means for inducing the flow of material in said passageways, causing material introduced therein from said holding means to be impelled through said passageway of said first segment and selectively through said passageways of said second and third passageways.