Flexicon plant-wide weigh batching system

An automated plant-wide weigh batching system engineered by Flexicon simultaneously weighs up to seven major ingredients received in bulk bags and unlimited minor ingredients received in 23 kg sacks, pails or boxes, and conveys weighed batches to a downstream blender that feeds a bulk bag filler and a paper sack filling machine.

System components include: five loss-of-weight Bulk-Out bulk bag dischargers with large surge hoppers and rotary airlock valves; two loss-of-weight Bulk-Out bulk bag dischargers with small surge hoppers and flexible screw conveyors; two loss-of-weight bag dump stations with flexible screw conveyors; a checkweighing hopper; a Twin-Centrepost bulk bag filler; a Pneumati-con dilute-phase pneumatic conveying system including blower, filter receiver and conveying lines; and a programmable controls package.

Each of the large surge hoppers accommodates the entire contents of a bulk bag containing a major ingredient.

The smaller surge hoppers on the loss-of-weight Bulk-Out bulk bag dischargers provide sufficient capacity to allow reloading of major ingredients conveyed at lower rates by small diameter flexible screw conveyors. Also conveyed by loss-of-weight flexible screw conveyors are minor ingredients, which are tipped manually at either of two tipping stations equipped with vacuum filtration systems to contain airborne dust. All flexible screw conveyors discharge into a common checkweighing transition hopper mounted on load cells before feeding the material through a rotary airlock into the pneumatic line.

The filter receiver discharges weighed material into a mezzanine-level, high-capacity blender, also mounted on load cells. Blended batches are gravity discharged into the paper sack filling machine or the bulk bag filler, both at floor level.