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Powder/Bulk Solids

The Source for Dry Processing and Bulk Handling Technology

Feeders Spotlight - May 2010

May 6, 2010

88904.tifVibratory Feeder
The AccuFeed uses molded composite components and a modular design to reduce cost and delivery time. Available in capacities up to 600 cu ft/hr, the patented feeder employs controlled vibration to achieve volumetric  accuracies of ±1–2%. The machine disassembles quickly for cleaning and meets FDA and USDA sanitary requirements. It can be scale mounted for batch or continuous weigh feeding applications. Popular sizes are stocked for immediate delivery.  Vibra Screw Inc., Totowa, NJ  973-256-7410 www.vibrascrew.com

88905.tifAbrasion-Resistant Ceramic Feeder
Lined with a thick ceramic coating that is designed to resist the most abrasive materials, this abrasion-resistant ceramic feeder offers heavy-duty design and construction. Features include: longer life; 0.100-in-thick ceramic bore; Tungsten carbide throat protection; heavy-duty fabricated 8-vane rotor; Tungsten carbide rotor vane and shroud tips, 0.100-in. thick; air purge seal connections; air gap between seals and bearings; outboard sealed ball bearings; and a maximum operating temperature of 350°F. Abrasive applications include fly ash, gold ore, rutile ore, sand, feldspar, alumina, kaolin clay, raw limestone, lignite, cement, diatomaceous earth, and copper concentrate.  FLSmidth Inc., Bethlehem, PA 800-523-9482 www.flsmidth.com

88906.tifRedesigned Volumetric Feeder
The newly redesigned MetaTech feeder features only two moving parts (drive and screw) to ensure long-lasting performance with minimal process downtime and maintenance expense. The feeder also features a compact, space-saving design, low maintenance o-ring sealed inline direct drive, new Delrin bushing, and an agitator/conditioner screw to maintain consistent product density and completely fill the feed screw for accurate feeding (+1–1.5%). Interchangeable screw/tube combinations are available in ½–6-in. sizes and permit feed rates from 0.05 to 550 cu ft/hr. MetaTech feeders are also available in a wide range of models including space-saving mini, sanitary, and combination feeder/conveyor units. Metalfab Inc., Vernon, NJ 800-764-2999 www.metalfabinc.com

88907.tifScrew Feeder
Booth 3533 - The PosiPortion feeder offers a 2-in-1 feed screw option that improves batch accuracy without compromising speed. A two-speed delivery scheme consisting of a fast-turning bulk-mode and a slower dribble-mode is used to meet batch set points. Additional equipment can be paired with this system for further cost savings.  Hapman,  Kalamazoo, MI 800-427-6260  www.hapman.com

88908.tifVolumetric Feeders
Booth 1637 - For volumetric dry material feeding applications, Tuf-Flex series feeders handle a wide variety of fine powders, flakes, granules, chips, and pellets. Designed with a unique form of agitation, the feeders are manufactured with a Tuf-Flex vinyl hopper that is agitated on the exterior by two alternating paddles. The paddle action gently massages the material down into the metering screw, eliminating ratholing and bridging while conditioning material into a consistent bulk density. The helix flights are filled uniformly, resulting in high accuracy. The feeders are offered in model sizes accommodating feed rates from 0.000017 to 280 cu ft/hr.  Schenck AccuRate, Whitewater, WI 800-558-0184 www.accuratefeeders.com

88909.tifMagnetic Rotary Feeder
Booth 1023 – The Magnetic Rotary Feeder (MRF) protects and controls feeding characteristics of free-flowing material into processing equipment. MRF units provide a continuous uniform flow of product, increasing processing machinery productivity. The integrated permanent plate magnet protects processing equipment from damage caused by ferrous tray iron. Product feed rates can be regulated with a standard constant speed or with an optional variable speed drive system. An exclusive magnet cleaning system is simple to operate and requires no heavy lifting or handling. Constructed of heavy-duty steel-plate and featuring a powerful Ceramic 8 magnet, the MRF is available in a variety of sizes. Magnetic Products Inc., Highland, MI 800-544-5930  www.mpimagnet.com

88910.tifVibratory Feeders
BEST vibratory feeders are designed to smoothly convey products. Flow of material is adjustable and flow rate can be variable or fixed. Available in electric- or air-operated models, these heavy-duty vibratory feeders are designed with above-, below-, or side-mounted drives and can be arranged for base mounting or overhead suspension. The feeders come in custom vibrating trough lengths, with special trough designs available. Several basic models are available including air-operated light duty, air-operated heavy duty, twin-motor vibrating pan and grizzly feeders, electromagnetic, twin motor, and special application feeders. Metso, Brunswick, OH 800-827-9237 www.bestvibes.com

88912.tifPrecision Rotary Feeders
Booth 2535 - These rotary feeders are precisely engineered with heavier barrels and can be rebuilt 1–3 times before needing replacement. They are manufactured in the United States in sizes up to 45 × 55 in., larger if custom made. The rotor blades are hard surfaced and tipped to give extended life, and the barrel material can be manufactured from mild steel, stainless steel, or alloy steel up to 500 Brinell to meet harsh application requirements. A trade-in allowance is offered for used feeders when they are replaced with a new precision rotary feeder. Precision Machine & Manufacturing Inc., Eugene, OR, 800 722-9841  www.premach.com

88913.tifFeeder Material Flow Aid
Booth 1413 - The ActiFlow Smart bulk solids activator is a method to prevent bridging and rat-holing of cohesive bulk materials in stainless-steel hoppers without internal hopper agitation. The pharmaceutical ActiFlow design is a non-product contact device, consisting of a patent-pending vibratory drive and intelligent control unit, designed specifically to work with the company’s pharmaceutical line of gravimetric loss-in-weight feeders. In applications involving difficult flowing materials, ActiFlow eliminates the need for mechanical agitators with secondary motors and gearboxes, as well as the need for flexible side wall agitation devices or aeration pads. The patent-pending self-tuning algorithm implemented in the K-Tron Control Module (KCM) monitors the system, continuously adjusting the  frequency and amplitude of the ActiFlow to maintain flow within the hopper. In this manner, bridges and rat-holes are prevented before they can form.  K-Tron Process Group/K-Tron Feeders, Pitman, NJ 856-256-3265  www.ktronprocessgroup.com

88914.tifTotally Enclosed Vibrating Feeder
Booth 3840 - This totally enclosed vibrating feeder with high trough sides and bolt-on covers eliminates the need for a static skirt with flexible connector seal. This eliminates downtime and maintenance associated with the removal, cleaning, and replacement of the flexible connector seal. Worn out flexible connector seals lead to dusting and difficult working conditions. This unit’s design essentially eliminates dusting. The feeder is constructed to  operate under highly abrasive conditions with little maintenance. Designed to match specific applications, it can discharge material over the trough end or through a bottom spout and the unit can be suspended or supported from below.  Carman Industries Inc., Jeffersonville, IN 800-456-7560  www.carmanindustries.com

88915.tifLoss-in-Weight Batching System
This system is designed to be dust tight and virtually maintenance free. A bag access chamber, fitted with an automatic clamping system, ensures operators are not exposed to even the dustiest products. Product is discharged from a bulk bag directly to the GeoMate batching feeder, thereby minimizing headroom requirements. The GeoMate LIW feeder batches product in a pulse-less fashion to a belt conveyor. Batching accuracy to  +0.05% is achieved. The feeder operates with no moving parts and comes with a two-year warranty. 3Sigma, Charlotte, NC 704-846-1617 www.3sigma.biz

88916.tifVibratory Pan Feeder
Booth 1304 - The Kraus Stedi-Flo vibratory pan feeder is a rugged and heavy-duty design that can include a replaceable abrasion-resistant liner for extremely abrasive applications. It can be used for feeding almost any granular material or larger particle sizes such as abrasive silica sand, large glass cullet, gravel, abrasive ores and minerals to very fine granular powders. Applications include feeding from storage silos, bins, and hoppers to and from dryers, belt conveyors, bucket elevators, weigh hoppers, and continuous process applications such as feeding to a continuous mixer. The feeder can be operated with a variable speed controller or in a fixed rate application.  Kraus Vibratory Equipment, St. Paul, MN 651-484-2900  www.krausvibratory.com

88917.tifFeeder with Integrated Control Valve
Booth 2520 – The CentriFeeder with Integrated Control Valve (ICV) accurately measures and controls the flow of any dry, free-flowing solid. Using a customizable touchscreen HMI equipped with an integrated Servo (low rpm, AC, brushless), a PID control loop is established to control the ICV feeding the patented CentriFlow meter. For precise measurement and control, an Integral Linear Position Sensor is used to regulate the blade’s position to within 1 part in 1000 (based on stroke). The blade’s movement can then be monitored via the CentriView electronics, or read manually via the mechanical indicator on the exterior of the valve. For delicate products, the unit is equipped with a Virtual Flow Stop function that stops flow with virtually no damage to your product. Eastern Instruments, Wilmington, NC 910-392-2490 www.easterninstruments.com

88918.tifVolumetric Feeder
The Model 170-MI-5 volumetric feeder has been specifically designed to accurately meter a wide range of dry solid ingredients at feed rates as low as 0.0012 cu ft/hr. Designed with quick-disconnect features throughout, the entire feeder can be disassembled and reassembled in just minutes, without the need for any tools. The unit is designed for total product cleanout and is ideal for those applications where frequent product changeover is a requirement. Thorough cleaning has been made simple and quick, making it well-suited for both sanitary and pharmaceutical applications. Available as a volumetric feeder or as the metering device of certain model “weight-loss” weigh feeders, this feeder offers a range of options including construction suitable for 3A Sanitary duty. Acrison Inc., Moonachie, NJ 201-440-8300 www.acrison.com

88919.tifContinuous Loss-in-Weight Controller
Booth 1461 - Designed for screw feeders, the GRC32 gravimetric rate controller is a 32-bit microcontroller with a complete platform of optically isolated analog and digital I/O. The unit also has Fieldbus protocols, a robust removable memory device (1GB), and simulated rate or weight running modes. Tecweigh | Tecnetics Industries Inc.,  St. Paul, MN 800-536-4880 www.tecweigh.com

88976.tifHigh-Precision Feeders & Systems
Booth 2009 – Brabender specializes in high-precision dry ingredient feeders and systems. Loss-in-weight, weigh belt, and volumetric feeders handle ingredients ranging from powders to granules to flakes and fibers. The types of feeders available include: FlexWall feeders, internal/stirring agitated feeders, single and twin screws, vibratory, fiber feeders, micro rate feeders, spreading feeders, and belts. The feeders can be applied to continuous or batch processes and are available for feed rates from 20 g/hr up to 100,000 lb/hr. Numerous exclusive features include Filtered Intelligent digital scales for loss-in-weight feeders, rugged ac gear motors with Allen Bradley PowerFlex VDFS, quick clean designs for fast changeover, and a full range of feeder controls. Brabender Technologie, Mississauga, ON, Canada  888-284-4574 www.brabenderti.com

88977.tifWeigh Screw Feeder
This weigh screw feeder accomplishes continuous flow measurement with a cantilevered screw feeder with pivot centered under the in-feed of the feeder with the feeder suspended from a load cell hung from the discharge end. Sized for flow rates from 7–170 cu m/hr, it has a turndown ratio of 5:1. It delivers accuracy of ±1% full scale on virtually all free-flowing solids with a wide range of densities. Optional close tolerance construction of the feeder and low rpm are used to minimize breakage of fragile materials. Each unit comes with support frame, flanged inlet transition with flexible connector, load cell with mounting hardware, and TEFC motor with gear/belt reducer. The feeder is constructed of mild steel with stainless steel optional. APEC, Lake Odessa, MI  616-374-1000 www.apecusa.com

88911.tifElectromagnetic Vibratory Feeders
Booth 1629 & 2015 - These small vibratory feeders for hazardous locations offer Hi-Vi electromagnetic drive  circuits that provide a straightforward yet powerful solution to address customers’ feeding, screening, and conveying applications. The drive units are CSA approved for Class II division I group F&G hazardous environments. The feeders can incorporate unique design features such as tool-less removal of covers and screen inserts for trays. The feeders are also available for Class II hazardous environments and have the ability to feed virtually any bulk material from micron size to bulky chunks. Eriez, Erie, PA 888-300-3743 www.eriez.com