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Dust-Free Bulk Bag Discharger for pneumatic conveyors.

Addressing the limitations inherent with conventional designs of bulk bag dischargers, Flexicon (Europe) Ltd. have announced the launch of the new BFF Series Bulk Bag Discharger for operation with in-line, pneumatic conveying systems.

The new system eliminates dust during untying, discharging, collapsing, retying and removing bulk bags while increasing safety and promoting complete discharge of bag contents.

The design features a new bag-to-conveyor interlace comprised of two sections:

A: The uppermost of which contains a Spout-Lock[R] clamp ring positioned above a pneumatically actuated Tele-Tube[R] telescoping tube, allowing dust-tight connections between the bag spout and hopper, as well as automatic tensioning of the bag as it empties to promote flow and evacuation.

B: The lower section which is comprised of a small surge hopper that directs material into a pneumatic pick-up adapter with four conveying line connections.

The telescoping tube raises the clamp ring assembly that seals the clean side of the bag spout to the clean side of the telescoping tube then lowers until the bag spout is pulled taut. Once the spout is untied, the telescoping assembly exerts continual downward tension on the spout, elongating the bag as it empties.

The high-integrity, dust-tight seal between bag spout and clamp ring allows full-open discharge from bag spouts of all popular diameters, eliminating the need for iris valves commonly employed to lessen dust escape inherent with bag spouts hanging loosely in hopper intake chutes. The dust-tight system is vented to an optional Bag-Vac[R] dust collection device that collapses empty bags prior to retying and disconnection, eliminating dust emitted during manual flattening of empty bags.

An optional Power-Cincher[R] pneumatically actuated flow control valve allows retying of partially empty bags. Unlike devices using opposing bars to pinch the spout from two sides, the Flexicon design employs a series of curved, articulated stainless steel rods to cinch the spout concentrically on a horizontal axis for easy tie-offs and vertically in a tight zigzag pattern to prevent leakage of fine powders.

The discharger is also equipped with optional Flow-Flexer[TM] bag activators that raise and lower opposite bottom edges of the bag at timed intervals, loosening compacted materials and promoting material flow into the bag discharge spout. As the bag lightens, the stroke of the bag activators increases, raising the bag into a steep "V" shape, eliminating dead spots for total evacuation of material with no manual intervention.

BFF Series dischargers are characterized by top-mounted receiving cups and removable bag-lifting frames for forklift loading of bulk bags at low cost. Also offered are BFC Series dischargers having a cantilevered I-beam with electric hoist and trolley to raise and position bulk bags without the aid of a forklift. Both Series of dischargers are fitted as standard with patented Z-Clip[TM]strap holders for rapid, secure insertion and removal of bag straps, and are available with integrated scale systems for loss-of-weight batching directly from bulk bags.

Construction is of carbon steel with durable industrial finish, or stainless steel finished to industrial food, dairy or pharmaceutical standards.

Contact Flexicon (Europe) Ltd. tel: 01227 374710 or visit www.flexicon.com

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Title Annotation:PLANT
Publication:Food Trade Review
Date:May 1, 2005
Words:517
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