MATERIAL CONDUIT FOR PNEUMATIC CONVEYANCE SYSTEM OF PNEUMATIC COTTON HARVESTING MACHINE Russian patent published in 1996 - IPC

FIELD: agricultural engineering, in particular, raw-cotton conveyance devices. SUBSTANCE: material conduit has inlet and curved outlet airducts. Curvature radii of outlet airduct wall are coextensive with transverse size of its section. Outlet airduct has part with uniform section area and part with section area gradually reducing in the direction of motion of raw cotton mass. Inlet airduct has uniform section area along its length. Outlet airduct has portions with inwardly oriented convexity provided with baffle recesses oriented transverse to flow direction. Outlets of baffle recesses are directed opposite to flow direction. EFFECT: increased efficiency by uniform distribution of raw cotton across hopper volume due to leveling of air and raw cotton volume across outlet airduct section area. 4 dwg