The Bev-Con mobile flexible screw conveyor with round vibratory screener removes oversize particles and reduces soft agglomerates before conveying on-size bulk materials from powders and large pellets that flow freely, to non-free-flowing products that pack, cake, seize or smear due to compression or frictional heat. Ready to plug in and run, the caster-mounted system can be rolled into position, locked in place with jacking footpads, and connected to an upstream material source in several minutes. A rugged flexible screw with geometry optimized for difficult-to-move products is the only moving part contacting material, and is driven above the point at which material exits the conveyor, preventing material contact with seals, and associated bearing failure and product contamination.