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Powder/Bulk Solids

The Source for Dry Processing and Bulk Handling Technology

Technology Review

March 6, 2007

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Stainless-Steel Paint
The Steel-It stainless-steel epoxy system creates an abrasion-resistant conveying surface for the bulk processing of nonfood materials. The system consists of an epoxy primer and a finish coating that features a Type 316L stainless-steel leafing pigment. This pigment creates a durable corrosion-, salt-, and chip-resistant metallic barrier. Providing greater wear resistance on hoppers, chutes, and other surfaces than conventional paint, the system is available in gallon and quart kits and can be applied by roller, brush, or spray gun. Creating a smooth, satin gray finish that can last up to 10 years, depending on the application and environment, the system exhibits 2H pencil hardness and is capable of withstanding a continuous 2000-hr salt spray test. It is USDA-approved for use where incidental food contact may occur.
Stainless Steel Coatings Inc., South Lancaster, MA 978-365-9828 www.steel-it.com
Lock-Out Relays
Type WL-2 and Type WL field-proven lock-out relays (LORs) are used to automatically trip and lock out circuit breakers and other devices, protecting this critical equipment from damaging electrical faults. Manual reset devices, they can be provided with or without handle-trip capability. The Type WL-2 LORs are used primarily where the simultaneous operation of many contacts is required, providing service in new facilities or replacing worn or failing units in older ones. Featuring a low-current magnetic trip mechanism, they are available with nominal operating voltages ranging from 24 to 250 V dc or 120 to 480 V ac. They are unaffected by the shock, vibration, humidity, and thermal cycling normally found in commercial operations.
Electroswitch, Weymouth, MA 781-335-5200 www.electroswitch.com
Case-Printing Systems
Company can optimize packagers’ use of corrugate and associated resources by going to a generic case-printing program. This equipment prints shipping cases, wraparounds, die cuts, and multiwall Kraft bags. Easy print message software and disposable printing film make changing print messages simple and quick while providing a large (11 × 32-in.) print area. At 200-dpi print resolution, even fine-line graphics and bar codes print precisely, despite the irregularities of the corrugated substrate. The rugged equipment requires only routine and common-sense maintenance. The ink contains no toxic chemicals, and no solvents are needed for cleanup.
Iconotech, Clinton, CT 800-521-0194 www.iconotech.com
Pneumatic Turbine Vibrator
Series PTV Pneumatic Turbine Vibrators are ideal for high-vibration frequency types for a low noise environment. They are typically installed on a vibrating separator, conveyor, automatic arrangement machine, packing machine, or filling machine.
Dwyer Instruments Inc., Michigan City, IN 219-879-8000 www.dwyer-inst.com
Continuous Rotary Tray Dryer
The continuous rotary tray Turbo-Dryer features a modified design to dry capsules, pellets, beads, and tablets to a final moisture or volatiles level as low as 0.001%. This design ensures that all individual particles are treated for the same length of time under controlled conditions. Benefits include precise, automatic control of residence time and temperature for uniform output and very low residual moisture; gentle handling for minimum dust fines; containment of product, gases, and odors; solvent recovery ability; continuous operation for greater production; and low energy and operating costs.
Wyssmont Co. Inc., Fort Lee, NJ 201-947-4600 www.wyssmont.com
Centrifugal Impact Mill
The 24-in. sanitary stainless steel Model CIM-24-SS Centrifugal Impact Mill provides coarse to fine grinding (325 mesh) of friable materials into controlled particle sizes, as well as lump breaking and conditioning of fibrous materials. High-speed rotation of the inner disc creates centrifugal force that accelerates bulk material entering the central inlet of the opposing stationary disc. As material travels from the center to the periphery of the discs at high speed, it passes through five intermeshing rows of rotating and stationary pins, with the desired tight particle size distribution obtained by controlling the rotor speed. Setting the infinitely variable rotor speed between several hundred and 5400 rpm provides the flexibility to use the machine for coarse grinding and de-agglomerating, as well as for fine grinding. Also called a Pin Mill, the unit handles wet or dry materials, to produce tight particle size distribution at any given rotor speed setting, and to sanitize rapidly.
Munson Machinery Co. Inc., Utica, NY 800-944-6644 www.munsonmachinery.com
Vacuum Dryer
A company offers a new stainless vacuum dryer. The agitator’s paddles are set at opposing angles to ensure that the materials being dried are all exposed to the heated jacket surface area. Features include stainless-steel construction, full-vacuum-to-25-psig operation, a 185-psig dimpled and baffled jacket on trough sides and endplates, internal surfaces polished to a 240-grit finish, and a special pneumatic spherical discharge valve. Designs are available from 1 cu ft to more than 500.
Charles Ross & Son Co., Hauppauge, NY 800-243-7677 www.mixers.com
Flexible Screw Conveyor
The Aero-Flex flexible screw conveyor meters product from bulk bag unloaders, bag dump stations, and storage vessels. Available in a range of popular sizes, the conveyor typically transfers product over distances of up to 40 ft and rates to 10 tons/hr for materials with a bulk density of 40 lb/cu ft. Typical applications include the refilling of packaging machine hoppers, metering feed into mix tanks such as lime addition, and gain-in-weight hopper filling.
Vac-U-Max, Belleville, NJ 973-759-4600 www.vac-u-max.com
Basket Blaster
The Smartline Basket Blaster is completely self-contained and features a removable rotating-load basket to tumble parts as they are being blasted from the bottom of a heat-treated steel basket. The compact machine’s shipping weight is 1700 lb, and it arrives fully assembled. It has a gravity reclaim system and an integral bag-type dust collector. A skewer system adaptation is available for low production quantities where relatively large parts can be affixed and rotated for complete overall cleaning. The blast wheel is center fed and has three blades similar to other center abrasive-fed wheels. It is not a “slap paddle” blast wheel. The basket size is 20 in. in diameter × 27 in. long, and the maximum capacity is 224 lb. Blast-wheel, abrasive-screw, and shaker motors are included. The motors require 230 or 460 V-, 3-Ph, and 60-Hz utilities.
Wheelabrator Group Inc., Burlington, ON, Canada 800-544-4144 www.wheelabratorgroup.com
Impact Air Hammer
Series IPV Impact Air Hammers unclog bulk material that is stuck in conveying lines. These devices are ideal for use with products that are sticking in elbows and joints due to high-humidity content. Units come in several impact force sizes and are pneumatically actuated. They feature a magnetic tripping action that allows a greater impact and spring return to the normal position.
Dwyer Instruments Inc., Michigan City, IN 219-879-8000 www.dwyer-inst.com
These versatile stackers allow workers to lift, transport, and position up to 3000 lb at a time. Available with manual or electric drive, they feature battery-powered electric lift, with lifting heights of up to 80 in. Designed to handle any type of pallet or skid, they are available in two basic configurations. The fork-over design works with any type of open-bottom pallet or skid, and the straddle style accommodates any pallet or skid, even those with “closed” bottoms. Standard fork lengths are 45 in. for fork-over models and 42 in. for straddle units, but forks are available in other lengths. The space between straddle forks is adjustable, as is the space between
straddle legs.
Southworth Products Corp., Portland, ME 207-878-0700 www.SouthworthProducts.com
Cone-Bottom Reclaimers
Company provides silo and reclaimer systems for cone-bottom applications up to 45 ft in diameter. With confined-space friendliness in mind, all of the drive components are external to the stored product. Typical products effectively stored and handled include powders, chemicals, wood residue, grain meals, and other materials with poor flow characteristics. The company also offers a complete family of silo and dome storage and reclaim systems up to 150 ft in diameter.
Laidig Systems Inc., Mishawaka, IN 574-256-0204 www.laidig.com
Industrial Caster Wheel
The patented Faultless Eagle wheel can support heavier loads than conventional caster wheels. Versatile and durable, it is suited for a wide range of industrial applications and can withstand load capacities of 600 to 1200 lb. Its patented interlocking polyurethane tread on polypropylene core offers excellent adhesion for medium to heavy-duty weight capacities. Its standard operating temperature range is –40° to 180°F. Ideal for use with Faultless 1400-3400 series casters, it is available as plain bore, delrin, roller, or precision bearing.
Hickory Hardware, Nashville, TN 800-322-7359 www.hickoryhardware.com
Free-Swinging Sifter
Designed for applications with large screen area requirements and multiple separations, the free-swinging HS sifter is a high-capacity machine made in 2, 4, 6, or 8 sections with sieve stack heights from 17 to 30 sieves that provides highly accurate separations. Custom sizes can also be manufactured. Features have been developed specifically for the process requirements dictated by corn milling. The sifter is available with either the original rack and pinion sieve compression system or the company’s pneumatic sieve compression system for easy maintenance and to assure uniform and constant sieve compression. Sanitary operation and easy cleanout is assured through careful design with no ledges or unsealed gaps.
Great Western Manufacturing, Leavenworth, KS 913-682-2291 www.gwmfg.com
Bulk Bag Filler
The NT-series bulk-bag filler features an electric adjusting bag-support carriage, a stainless-steel fill head, C-frame construction for ease of bag access, and forklift pockets for mobility. Options include densification, bag preinflation and de-aeration, and digital weighing systems.
Hapman, Kalamazoo, MI 800-427-6260 www.hapman.net
Laser-Marking System
The Videojet 3120 10-W laser-marking system delivers marking speed, complex marking capabilities, and easy integration for a wide range of permanent coding applications. It is capable of marking speeds up to 1200 characters/sec and line speeds up to 10 m/sec. Fast scanners and high-speed digital signal processing are used to provide high-quality, permanent marking with no degradation of code clarity, even at high line speeds. The unit marks complex, multiline alphanumeric messages, foreign language fonts, graphics, symbols, and machine-readable codes. The laser can quickly and easily apply a variety of code types: expiration and manufacture dates, ticket numbers and line codes, ID matrix and bar codes, logos and symbols, and individual data such as serial numbers, batch and lot codes, contents, and weight specifications.
Videojet Technologies Inc., Wood Dale, IL 800-843-3610 www.videojet.com
Motion Sensor
The company’s Milltronics-brand Millpulse 600 motion sensor offers CE approval. Built to operate in the harshest conditions, the instrument is a heavy-duty two-wire motion sensor that provides solid-state switch output to programmable logic controllers (PLCs). Noncontacting motion sensors detect changes in motion and speed of conveying, reciprocating, and rotating machinery. Typical applications include tail pulley shafts, driven pulleys, motor-shaft sensing, and screw conveyor flights. The sensor offers underspeed, overspeed, differential speed, and speed-indication functions by a PLC. With an all-aluminum body, it operates from –40° to 140°F, with a separation of up to 4 in. between the sensor and targets.
Siemens Energy & Automation Inc., Alpharetta, GA 770-751-2211 www.sea.siemens.com
Air Transfer Tubes
Company offers a full line of air-operated transfer tubes for pneumatic conveying, hopper and bulk loading, dust and trim waste removal, and related applications. TT Series Transfer Tubes are air-powered and provide an effective, maintenance-free method for conveying materials at high speed. Featuring a smooth bore that lets materials pass freely without clogging, they operate using the Venturi principle, which creates a powerful vacuum from compressed air. They are offered in several sizes to match product and flow requirements. Designed to provide instantaneously air movement the moment compressed air is applied, their transfer speed and output can be infinitely controlled by regulating the input air pressure.
Anver Corp., Hudson, MA 800-654-3500 www.anver.com
Flexible Screw Weigh Batching System
This weigh batching system designed for mezzanines and other low headroom areas utilizes low profile flexible screw conveyors configured with motor drives at the inlet end of the conveyor, reducing height and width requirements at the discharge end. The automated system is comprised of eight low profile conveyors fed by roof-mounted storage vessels, with each group of four conveyors feeding either of two gain-in-weight hoppers that gravity discharge through the mezzanine floor to a ribbon blender at ground level. A system controller starts and stops each conveyor to weigh ingredients in sequence, first at high feed rate for rapid filling, then at dribble feed rate, stopping material flow once the accurate batch weight has been gained by the hopper.
Flexicon Corp., Bethlehem, PA 888-353-9426 www.flexicon.com
Slurry Sampler
The Slurry Sampler autosampler for the Partica LA-950 Laser Diffraction Particle Size Analyzer fully automates particle size measurement for improved reproducibility, system availability, and productivity. Sample mixing can be achieved either with a mechanical stirrer or magnetic stir plate. The sampling probe is cleaned in an integrated wash station to prevent sample cross-contamination. Sample containers can be configured depending on customer requirements with up to 60 sample positions. The Scheduler software makes routine operation as simple as filling in a spreadsheet. A Condition and Method file is selected from a list, the sample information, position and the file name are entered, and one button starts the analysis. The resulting data is processed automatically for streamlined, efficient measuring. High priority samples can be inserted into the sequence at any time and the instrument can be operated in a manual mode without any hardware changes.
Horiba Instruments Inc., Irvine, CA 949-250-4811 www.horibalab.com
Container Discharger
Once a container is properly loaded, it is staged through the automated in-feed system. The operator removes the cover, unties the liner, and pulls it taut over the container edges. After the de-lidding process is complete, the operator will press a Confirm button and the container will proceed into the automated discharge sequence. The container then moves into the equipment on the powered conveyor in-feed system, is automatically positioned in the discharger, and is sealed against the custom discharge hood and rotated 180° to the final discharge position. Material is discharged into the agitator hopper and from the hopper into the existing vacuum conveyor inlet using a horizontal feed conveyor. Once the system determines the container has completely emptied, the system lowers the empty container back to the loading position and discharges it onto the powered out-feed conveyor section. The out-feed conveyor system will have space for 10 pallets of empty boxes.
NBE Inc., Holland, MI 616-399-2220 www.nbe-discharge.com
Heat Exchanger
The Bulkflow heat exchanger heats or cools powders and bulk solids and combines the two sciences of indirect heat transfer and mass flow of bulk solids. The powder or bulk solids move slowly by gravity between vertical heat transfer surfaces formed by welding plates containing the heat transfer fluid, typically water in the case of a cooler. A mass-flow discharge device controls the product flow rate. Equipment is contained in a totally sealed unit to eliminate any concern for dirt or contamination. The system does not require large volumes of air to operate, letting gravity do the work to reduce power consumption. A new high-temperature model uses horizontal water-cooled tubes, which minimizes thermal stresses and accommodates thermal expansion. The system cools bulk solids with temperatures up to 1000ºC. In this model, high-temperature solids flow slowly by gravity over the cooling tubes while indirectly being cooled. The benefit of the tube design compared to the plate design is that the geometry of the tube is uniform with even temperature distribution throughout the tube wall to avoid hot spots and local stresses.
Bulkflow Technologies, Calgary, AB, Canada 403-254-3500 www.bulkflow.com
Drum Filler
A palletized drum filler fills four drums in four minutes. Palletized filling is recommended whenever drums are to be stored or shipped on pallets, and the new Bare Bones drum filler is ideal for low-volume or batching operations that fill four 55-gallon drums sequentially. It can also fill IBCs or pails on a pallet. Standard construction material is all-welded structural steel. A digital weight meter (NTEP-approved) with easy-to-read display and operator-prompting is included—with a 5000-lb capacity scale base and four NTEP-approved load cells, a NEMA-12 enclosure, a microprocessor controller, and an RS-232 port for optional data acquisition and printer connection. Additional standard equipment includes an encoder, an air drive, a drip pan, a wiper ring, data logging capability, and many software enhancements.
Specialty Equipment, Houston, TX 713-467-1818 www.specialtyequipment.com
Tilt-Tray and Cross-Belt Sorters
The LS-4000E tilt-tray sorter and the LS-4000CB cross-belt sorter have a common platform that enhances system flexibility and a state-of-the-art energy system that reduces operating costs. Equipped with an energy-efficient linear synchronous motor (LSM), the sorters reduce the overall product life cycle cost substantially without sacrificing speed, capacity, and reliability. The high-speed LSM eliminates contact between moving parts, resulting in low wear and tear and low noise levels in the range of normal conversation—i.e., a maximum of 62 dBa. The sorters’ small, modular design features a low sorter section height and up to 20 ft between supports, enabling easy integration into existing facilities. The space-saving design provides extra room above the sorter and on the floor.
FKI Logistex, St. Louis, MO 877-935-4564 www.fkilogistex.com
CentriFlow meters replace weigh belts, impact meters, loss-in-weight meters, and static weigh scales where accuracy, low maintenance, and zero drift are critical. The meters are used for mixing and blending applications in the petrochemical, food, agricultural, and aggregate industries. Providing typical accuracies of ±0.25%, they use the principles of centripetal force, meeting the speed, accuracy, and reliability requirements for mixing and blending applications. The robust meters can measure a variety of products accurately, including
powders. They are also used in traditionally difficult applications.
Eastern Instruments, Wilmington, NC 910-392-2490 www.easterninstruments.com
Versatile Hose
Super Vac-U-Flex high-strength fiber-reinforced PVC hose is made using a proprietary manufacturing process that bonds the hose to a coated spring-steel wire helix. Flexible yet tough for easy handling, it bends around corners and withstands service temperatures from –20° to 150°F. The hose can be used in industrial or commercial vacuum cleaners and floor care equipment, insulation blowers, and ventilation units for machinery or circuitry. Other applications include dust, lint, oil-mist, gasoline-fume, or ozone removal. The product can also be used as a breather hose for fire-and-rescue helmets and as a hose for moving plastic pellets in compounding plants. Available in standard lengths of 25 or 50 ft with interior diameters of 3 or 4 in., it is also available in custom lengths, colors, and diameters from 1¼ to 4 in. Cuffed ends and screw-on end fittings are available for easier installation and tighter seals. Other modifications, including wire pitch and wall thickness, are possible to meet customer needs.
Hi-Tech Duravent, Georgetown, MA 864-297-2201 www.hitechduravent.com
Particle Size/Shape Analyzer Software Enhancement
A new classification feature in the software of the Morphologi G2 high-sensitivity particle size and shape analyzer allows the rapid identification and statistical assessment of different particle populations within a single sample. Particles can now be classified on the basis of size or shape, or a combination of both factors. The software feature is an integral part of any new purchase and is available as an upgrade to existing Morphologi G2 customers at no cost. Ideal for the identification of agglomerates and foreign particles, the classification feature enables users to direct their statistical shape and size analysis solely on those particles of interest within a sample. The ability to classify according to size and shape extends the value of this function to applications with shape sensitivity.
Malvern Instruments, Southborough, MA 508-480-0200 www.malvern.com