Principle of operation of POP-TOP™ bag stretching devices (BFF models only) and FLOW-FLEXER® bag activators (available on all models)
Poor-flowing, non-free-flowing and/or compacted materials will not fall through the bulk bag discharge spout consistently, often "rat-holing" or bridging as shown above.
At timed intervals, FLOW-FLEXER® bag activators raise and lower opposite bottom edges of bulk bags, promoting material flow into the discharge spout.
As the bag empties, the stroke of the FLOW-FLEXER® bag activators increases, raising the bottom of the bag into a steep "V" shape while POP-TOP™ extension devices stretch the bag into a cone shape, promoting complete discharge.
(On BFC models without POP-TOP™ bag stretching devices, the bag can be stretched in the same manner using the electric hoist, to promote complete discharge.)
Also see weigh batching systems.
Flexicon Loss-of-Weight Batching Systems discharge one or more bulk bags while weighing the material and conveying the batch directly to a common hopper, blender, conveyor, shipping container, or process vessel automatically, accurately, and economically. This loss-of-weight system is mounted on load cells which transmit the amount of weight lost to a controller which, in turn, stops the conveyor once the target batch weight has been reached.
The weigh batch filling head of this bulk bag gain-in-weight batching system can be cantilever-mounted (shown), or mounted remotely above any discharge point desired; the flexible screw conveyor can transport material at any angle to any nearby or distant plant location. Electric hoist and trolley model shown.
Options by model |
BFC Series (Cantilevered hoist & trolley) |
BFF Series (Forklift loading) |
BFH Series (Half-frame) |
Rotary airlock valve for operation in-line with pneumatic conveyors | | | |
SPOUT-LOCK® clamp ring with TELE-TUBE® telescoping tube |
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Conventional iris valve with intake chute/access door | | | |
Multi-purpose intake chute and manual dumping station | | | |
POWER-CINCHER® flow control valve |
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BAG-VAC® dust collector | | | |
FLOW-FLEXER® bag activators | | | |
POP-TOP™ bag extension devices | — | | — |
Stainless steel in industrial or sanitary finish | | | |
Designed for high sanitary/dairy applications | | | |
Floor hopper with outlet for mechanical or pneumatic conveyor process equipment or storage vessel | | | |
Flexible Screw Conveyor |
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Weigh Batching Package | | | — |