Bin Activators
HD Bin Discharger
Today’s process industries most often rely on Bin Activators to move dry bulk materials out of storage, on demand. Efficient, convenient, and economical, they attach to any new or existing bin. Properly applied, Bin Activators eliminate bridging and ratholing, reduce particle segregation, and promote mass flow. After we invented the Bin Activator almost 70 years ago, and through continued research into bin flow problems and solutions, Vibra Screw offers an extensive range of experience. There are more Vibra Screw designed Bin Activators in service today, than all others combined, handling some of the most flow resistant materials.   Â
THE ORIGINAL PATENTED DISHED HEAD BIN ACTIVATOR
MODEL HDBD COMPOUND SLOPE BIN DISCHARGER
BIN ACTIVATOR
Vibra Screw has three basic Bin Activator designs to meet all the various requirements of todays process needs. The original Dished Head design, the Model HDBD which uses a compound slope body and the rolled cone Bin Discharger design.
MODEL HDBD
Vibra Screw offers a line of Heavy Duty Bin Dischargers for large silos providing unique advantages to the production process.Â
The HDBD combines a shallow upper section with a steeper lower cone. The compound shaping eliminates bridging and packing at the discharge outlet which can be a problem with single sloped designs. No secondary baffle is required.Â
Available in diameters from 6′ to 12′, the HDBD uses the same flexible sleeve, vibration isolation system, and vibratory drives as Vibra Screw’s current line of Bin Activators making upgrading easy. Â
HOW IT WORKS ANIMATION
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 to view.
FORGED STEEL SUSPENSION SYSTEM
Each Vibra Screw Bin Discharger is supported by a series of forged steel hangers, fitted with steel core elastomer vibration isolators. The result is enormous strength along with near total isolation of the Bin Discharger vibration from the bin and surrounding structure.
The forged hangers carry 70,000 [small] and 120,000 [large] lbs load each. This is ultimate capacity [of the steel forging], so BA does not fall off bin. Useable [operating] capacity is determined by the isolators which is approx. 5000 lbs per hanger. So for high headloads we look at the isolator capacity and either add more forged hangers or cable hangers to keep the isolator loading within limits.
PATENTED BEADED SLEEVE
Molded in one piece with 4 retaining beads, this Vibra Screw innovation has eliminated the problem of sleeve leakage and slippage. Stainless Steel clamps fit securely between the beads and tighten easily and effectively. This sleeve design is so effective it will withstand 10 PSI internal pressure and is standard in all our Bin Discharger designs. Special compounds for high temperature and a flanged bolted sleeve for high pressure are also available.
OIL-LUBRICATED GYRATOR OR GREASE LUBRICATED VIBRATOR
Two vibrators to choose from.
Oil Lubricated and cooled GyratorÂ
Offered exclusively by Vibra Screw and guaranteed for 50,000 hrs of use. The large, force-generated eccentric weights are mounted on a massive shaft revolving in oversized, precision bearings. The drive motor is mounted inline with the eccentric weight assembly, but works through a floating coupling so that the motor bearings carry only the motor rotor. This extends motor life to several times that of a typical shafted motor.Â
Grease Lubricated Gyrator
A specially designed rotating motor with an oversized shaft, bearings, and eccentric weights on the shaft which generate centrifugal force. Force output is adjusted by changing the unbalance of the weights. Â
