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A new Tip-Tite Drum Dumper from Flexicon Corp. Bethlehem, Pa., has an integral flexible screw conveyor to allow volumetric feeding of bulk material from drums into downstream processes free of dust.

A hydraulic cylinder raises and seats the drum rim against a discharge cone, after which a second hydraulic cylinder tips the drum to an angle of 45, 60 or 90° with a motion-dampening feature. At full rotation, a pneumatically-actuated slide gate valve opens and charges the conveyor, which meters the material volumetrically according to infinitely adjustable user controls.

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As the flexible screw rotates, it self-centers within the tube, providing ample clearance between the screw and the tube wall to eliminate or minimize grinding. The flexible screw is top-driven beyond the point at which the material exits the conveyor, preventing contact with bearings or seals.

The conveyor transports bulk materials from sub-micron powders to large pellets, while the gentle rolling action of material prevents the separation of blends.

The rugged inner screw is the only moving part contacting material, resulting in reduced maintenance and increased reliability. A broad range of screws with specialized geometries is available to handle free- and non-free-flowing materials, including products that pack, cake or smear in other types of conveyors.

The unit accommodates drums from 30 to 55 gal weighing up to 750 lb and measuring 36 to 48 in. in height. An optional pneumatically-actuated vibrator on the discharge cone promotes complete evacuation of non-free-flowing materials.