Flexicon ultraheavy-duty bulk bag filler

The latest ultraheavy-duty bulk bag filling system from Flexicon receives abrasives, high-density solids and other difficult-to-handle bulk materials from upstream processes, and fills the material by weight into bulk bags. Intended for mining, glass, ceramics and other demanding industrial applications, the system comprises heavy-gauge variants of the company’s TWIN-CENTREPOST filler and flexible screw conveyor consolidated on a robust skid with integral forklifting tubes for mobility.

The filler is equipped with fill head height adjustment to accommodate all popular bag sizes, pneumatically retractable bag hooks and an inflatable connector to seal the bag inlet spout. A feed chute outlet port can be supplied with a filter sock for dust-free air displacement during filling, or vented to an optional BAG-VAC dust collector or the plant’s bag house.

The conveyor consists of a steel outer tube with a rugged flexible screw that self-centres as it rotates, preventing material from grinding between the screw and tube wall while eliminating the need for a bearing at the intake end. Since the screw is driven at its upper end beyond the discharge point, material contact with seals or bearings is eliminated.

Once the operator attaches the bag straps and activates the inflatable spout seal, the conveyor runs at full rate as the filler’s vibratory deck cycles densifies and stabilises the material. Load cells transmit weight data to the PLC, which slows the conveyor rotation to trickle-feed rate, stops the conveyor once the bag has gained its target weight and releases the bag straps.