A.O.M. in Calgary

by Teresa Acklin
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“What's New?” program features new product developments for the milling industry.

   Each year, the Association of Operative Millers' annual technical conference and trade show draws millers from around the world to learn about the latest in milling equipment, products and systems. At the 1994 event, held in Calgary, Alberta, Canada, in June, representatives of nearly 90 companies were on hand to display their products and answer millers' questions.

   A regular feature at the A.O.M. conference is the “What's New?” program, comprising presentations on a range of new products. This year, 12 companies were selected.

   Buhler, Inc., Minneapolis, Minnesota, U.S., began the program with a discussion of its new destoner Model MTSC, the third generation of Buhler destoners.

   Gravity-fed grain is spread by a feeder, which also acts as an air seal. On the pre-separation screen, the material stream is stratified by specific gravity using the screen's oscillating motion and the air flow. Heavy particles flow up and are fed to the final separation zone.

   The inclination of the screens, the air volume and final separation can be individually adjusted to achieve the optimum degree of separation. The destoner Model MTSC is available with one or two sieve decks, three capacity ranges and an optional air recycling system.

   Satake (U.S.A.), Inc., Houston, Texas, U.S., presented the Nirotec-PNIC, an on-line multi-stream, multi-task analyzing and control instrument for quality control. Using near-infrared technology, the unit rapidly analyzes flour protein, moisture, color, water absorption, starch damage and ash content.

   The Nirotec-PNIC can sample and analyze from multiple streams; can control the addition of gluten or water, for example, to two streams simultaneously; can hold calculation data for 100 different flour types; and can communicate with other computers and process control equipment. The system offers a database to monitor performance and a modem connection to facilitate service and support.

   Kice Industries, Inc., Wichita, Kansas, U.S., discussed its BF series of bran finishers.

   The enlarged model BF42 is designed to handle about 675 to 900 kilograms per hour for coarse bran or 900 to 2,200 kg per hour for fine bran using a standard 7.5 to 10 horsepower motor. The BF27 model uses a 5 hp motor and can handle 450 to 675 kg per hour of coarse bran or 675 to 900 kg per hour of fine bran.

   Both units feature doors located on both sides that can be opened on hinges or removed completely. Hardware and construction are heavy-duty and sanitary with rounded corners and epoxy coating. The units also can be suspended from overhead supports to keep the floor unobstructed.

   Perten Instruments N.A., Inc., Reno, Nevada, U.S., described the model 4100 SKCS, or single-kernel classification system for wheat. The unit measures kernel size, kernel weight, moisture content and hardness for individual kernels. Assessing the uniformity of the sample is facilitated because the unit provides not only average readings, but distribution profiles and information on individual kernels.

   The standard sample size is 300 kernels, or about 25 grams, and the wheat must be clean. The test process takes three to five minutes and has a 95% accuracy rate.

   Research indicates that the 4100 SKCS can estimate mill flour yield, detect blended wheat, assure correct wheat blending before milling and predict tempering time.

   Carter Day International, Inc., Minneapolis, presented its Modular Scalperator with major new features. These include a variable speed volumetric feed roll, HTD belt drive system with no chains or sprockets, torque limiters on the feed roll and scalp reel, an agglomerate grid to remove foreign material and a closed circuit option. The simplified design, including slotted end frames for roll and reel removal, allows for easy clean out and routine maintenance.

   The Scalperator's modular design is flexible. Options can be added later, and conversions between closed and open circuit configurations can be done as needs arise. The Scalperator comes in a range of sizes and capacities.

   The new Airstack Aspiration System from Codema, Inc., Minneapolis, may be used wherever dust-laden air must be aspirated off of several or many machines, brought into a collecting duct and conveyed into a filter. The Airstack system offers the advantages of large air ducts and low air velocities — thus saving energy — but without the disadvantage of dust settling in the ducts themselves.

   With the Airstack system, much of the dust precipitates out of the air stream before reaching the filter. This feature relieves the filter and reduces the possibility of choking. The simplified Airstack system also allows for additional ducts to be added later with little or no modifying or recalculating of ductwork.

   Blower Engineering, Inc., Lewiston, New York, U.S., presented information on new heavy duty displacement blower/vacuum pumps manufactured by the Spencer Turbine Co., Windsor, Connecticut, U.S.

   The Lobe-Aire RB series features spherical/cylindrical roller and ball bearing combinations with a 100,000-hour design life. Piston ring air seals provide dependable non-wearing operation to minimize air leakage past the shafts.

   The blowers use simple non-wearing slinger type oil seals to provide positive sealing and no shaft wear. Splash oil lubrication improves bearing life and operational simplicity. Some models incorporate removable mounting feet to permit either horizontal or vertical airflow.

   Tube Tech Ltd., Basildon, England, featured its flour spout cleaning system, the PCD-3, which is based on a rotating flexible drive unit. The unit rotates in a food-safe, wear-resistant sheath turning at variable speeds that can be powered electrically or by compressed air. The pigging system consists of a bullet combination of a sponge coated in nylon bristles that is fired down the spout.

   The system's advantages include speed and versatility. In an eight-hour shift, a two-man team can clean all spouts, from sifter floor to roller floor. More than 25 different systems are offered, each of which can be designed and adapted to fit specific needs.

   A new interface that allows integration of management computer systems with programmable logic controllers was the topic of a presentation by Comptrol Computer Control, Inc., Mississauga, Ontario, Canada. The new interface enables an exchange of data bewtween P.L.C.s and Comptrol's Scales and Yield Management System to provide millers with a one-source point of control and information access.

   Among its features are updates of live data. Under this information category, the interface informs the P.L.C. when new data is collected and maintained by the Scale and Yield Management system.

   The interface also allows customized commands to be set and enables customized reports to be generated.

   Boston Gear, Quincy, Massachusetts, U.S., a division of Imo Industries, Inc., described its automated systems for wheat flour and grain bin blending.

   Advanced Motion Control components and systems include high-efficiency in-line helical reducers, high-performance inverter duty motors and new, microprocessor-based A.C. inverters.

   The reducers are available in a variety of ratios in single, double and triple gear sets. The inverter duty motors are totally enclosed and non-ventilated to perform in all environments, while the microprocessor-based inverters are up to 96% efficient.

   Optional communication networks are available, including a Host Driven System and the more sophisticated Peer-to-Peer system.

   Johnson Sangati, Inc., Kansas City, Kansas, U.S., presented the Sangati Hygros-Tec II moisture controller for use in grain tempering systems. The Hygros-Tec II is a fully automated, programmable, feed forward system that measures product moisture and flowrate to determine the amount of additional moisture needed for optimum milling conditions.

   The unit continuously detects product properties between 5% and 20% initial moisture and will add up to 5% additional moisture within 0.1% of the target figures. Repeatability is 98% to 99%.

   The unit offers several status and alarm indicators and can be operated remotely from the main panel through a microprocessor.

   A new method of pest control in stored grain was outlined by Fumigation Service & Supply, Inc., Indianapolis, Indiana, U.S. The technique, for which a patent is pending, uses low levels of phosphine (65ppm to 100 ppm), 4% to 6% carbon dioxide and 32&C to 37&C heat and shows promise as a replacement for methyl bromide.

   Phosphine and carbon dioxide have excellent penetrating qualities. Tests conducted in three U.S. mills determined that the method successfully killed insects in various stages of development within 12 hours to 24 hours after fumigation, comparable to methyl bromide.

   Phosphine under certain conditions can cause corrosion of precious metals and copper. By using low levels of phosphine, the method helps to reduce these corrosive effects.