A new sanitary bag dump weigh batch station (photo) with an integral mechanical conveyor collects dust created during manual dumping of bulk materials from bags, boxes, drums and other containers, and discharges bulk material by weight. A high-velocity vacuum fan draws airborne dust from the atmosphere onto two cartridge filters. Automatic reverse-pulse filter cleaning releases short blasts of compressed plant air inside the cartridge filter on alternating cycles, causing dust buildup on the outer filter surfaces to fall into the hopper. The hopper discharges into an integral flexible screw conveyor, which runs until the accurate batch weight has been discharged. A mechanical hopper agitator improves the flow of material into conveyor, which handles both free- and non-free-flowing materials that pack, cake or smear, with no separation of blended products. — Flexicon, Bethlehem, Pa.
