Patent ID: 6722822
Filing Date: 2004-04-20
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 formed of a gas impermeable material spaced from and encompassing said first conduit, 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 thereof, defining a plenum; said second segment being displaceable relative to said first segment between a first position communicating said outlet of said first conduit of said second segment with a receptacle into which said material is to be conveyed, and a second position communicating said outlet of said first conduit of said second segment with said inlet of said material holding means; means for supplying a gas under pressure to said plenums, causing said gas to penetrate said first conduits to fluidize material flowing in said passageways; and means for inducing the flow of material in said passageway, causing material introduced therein from said holding means to be impelled therethrough.