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www.PowderBulkSolids.com   13







                                                                                                                                                   Januar y 2019
                                           bulk bags, and drums), in a clean   erator to untie a full bulk bag dis-  tom of the dump station, so no
                                           room environment which is sub-     charge spout without any release   material is lost. The materials
                                           ject to washdown sanitation.       of product. All product contact    have high bulk densities so the
                                                                              surfaces are designed in 316 stain-  bag dump station has the same
                                           Introduction to the Process        less steel including the sealing   screw discharger on the bottom
                                           Equally important is the introduc-  collar, operator housing with ac-  to provide a metered feed of ma-
                                           tion of material to the process    cess door, conical pickup adapter,   terial into the convey line. Like
                                           (i.e., the pickup point). Product   and screw discharge devices. The   the Activator bulk bag unloader,
                                           can be introduced via simple suc-  entire bulk bag unloader is con-   the screw discharger has a pneu-
                                           tion wand (from a drum) or a       structed in stainless steel to meet   matic poppet valve on its outlet to
                                           sanitary bag dump station with     A&C’s cGMP program.                prevent any dribbling of powder
                                           integral dust hood or via bulk       The sanitary 316 stainless steel   into the convey line which might
                                           bag (a.k.a. super sac) unloading   Vac-U-Max bag dump station is      affect the accuracy of the convey-
                                           systems. A&C introduces product    equipped with an integral dust     ing process.
                                           to the process via Vac-U-Max’s     collector that automatically turns
                                           sanitary bag dump station and      on when the dump station door      Observing Distances
                                           the Activator bulk bag unloading   is opened to keep dust from the    While one of the most important
                                           system with “chisel bottom” screw   bag opening away from the op-     factors in sizing a system, bulk
                                           dischargers. The bulk bag unload   erator. Dust that is collected on   density is not the sole criterion
                                           system features a dust-tight cover   the static-conductive filters is   used to determine components.
                                           and cantilevered open flight 6-in.   pulsed automatically into the bot-  Another key factor in sizing and
                                           auger to provide a consistent,
                                           controlled flow of powder into the
        Operator uses vacuum lifting device to
                                           convey line.
        repeatedly load bags into sanitary XP bag
                                             The Activator version bulk bag
        dump station.
                                           unloader features four pneumati-
        Material Properties &              cally operated actuator petals to
        Conveying Behavior                 massage the lower portion of the
        As most pharmaceutical and         bag in an alternating-side pat-
        nutraceutical processes start with   tern to promote optimal material
        a powder or granular material,     flow toward the center of the bag.
        material characteristics must first   “We have tested two-sided actua-
        be defined with focus on the mate-  tors, but the four-petal design is
        rials attrition and segregation,   far more effective in promoting
        vacuum conveying behavior, flow    material flow to the bag outlet,”
        properties, and particle properties   said Doan Pendleton, vice presi-
        like shape, size, cohesiveness, and   dent of Vac-U-Max. The Activator
        bulk density. The bulk density     assembly includes a NEMA 4X
        of a material is one of the first   control panel and level control
        indicators of design in terms of   so that the bag is only massaged
        sizing various system components   when powder is needed. The bag
        such as vacuum receivers and air   access door is capped for dust col-
        sources. Bulk density helps deter-  lection during bulk bag discharge.
        mine how many cu ft/min of air     The Activator uses lubrication-free       High speed and precision accuracy.
        is needed to move the material     pneumatic lifters that consume
        through the convey line. In A&C’s   50% less compressed air than air-        They’re our secret ingredients.
        case, the bulk densities were on   cylinders, providing A&C with             The Beta Raven Advantage
        the heavy side at 95 and 133 lb/   lower operating costs.
        cu ft.                               A&C can minimize material               If you want reliability, optimal batching performance, and precision
          Attention is given to the pros-  handling devices such as forklifts        accuracy, then you’ve got to have those secret ingredients. At Beta Raven,
        pect of segregation, especially    in the work area by leaving the           we’ve been leading the way in process automation and weighing systems
                                                                                     for more than 40 years.
        during manual transfer of materi-  bulk bag on a pallet, lifting and         Give your company the advantage over the competition with accurate
        als in drums or other containers,   placing it into the bulk bag un-         dosing of micro ingredients; unmatched speed with the ability to weigh
        to the next process vessel in the   loader with its integral I-Beam          5 ingredients at the same time on a 20-bin system; and volumetric
        production process. Vibration      and 2HP hoist. The operator               FDSDFLW\ WKDW PHHWV \RXU VSHFL F UHTXLUHPHQWV  1RW WR PHQWLRQ
        caused by moving containers pro-   controls the hoist from a remote          outstanding customer service. Our engineers and technicians are
                                                                                     available 24 hours a day, 7 days a week.
        motes segregation. While each      pendant, taking them safely away
        application requires a unique      from the lifting zone. The “I”            If you don’t have The Beta Raven Advantage,
                                                                                     maybe it’s time you did.
        resolution based on distinctive    beam and bag lift frame are con-
        environments and equipment,        structed in 304L stainless steel
        systems are generally built using   and handle bags up to 48 in. high
        standard components and custom-    with weights up to 2250 lb, with
        ized according to the application   typical I-beam and hoist rated for
        requirements. A&C’s process re-    up to 4000 lb.                                        betaraven.com
        quires the convey and discharge      The unloader is equipped with                       800•552•2382
        of multiple materials, from di-    a manual iris valve in the bag ac-
        verse types of packaging (bags,    cess housing that allows the op-
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