Mark Stewart

Screen Classifying Cutter Plays Key Role in Leading-Edge Alternative Energy Projects

Application Notes & Case Studies /

The PDC leased the Screen Classifying Cutter for two years ago before purchasing it. The unit proved effective at cutting hard, soft, and fibrous materials into controlled particle sizes with minimal fines at high rates for post-usage. It features a proprietary helical rotor design with dozens of cutter tips attached to a helical array of staggered holders called “interconnected parallelograms” to continuously shear oversize materials against twin, stationary bed knives.

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Vibratory Screener Helps Raise Littleneck Clams

Application Notes & Case Studies /

The circular vibratory screener consists of two screening decks, one above the other, with an imbalanced-weight gyratory motor that causes them to vibrate. “When the time comes to remove the larger clams from a raceway, we scoop several handfuls of them into the top deck of the screener, which has a slightly larger mesh than the lower one,” Mayer explains. “For example, we might have a 3/8 in. (9500 micron) screen on top and a 1/4 in. (6300 micron) screen on the bottom. As the clams move toward the periphery, the smaller clams fall through onto the bottom screening deck. Those small enough to pass through the tighter mesh of the lower screen are ejected through a discharge spout into a collection pan. Those too large to pass through the smaller mesh are ejected through another discharge port into a separate collection pan. The largest clams, those that failed to pass through the larger mesh of the upper screen, remain on that screen.”

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Aquaculture Center Switches to Vibratory Screening of Oysters

Application Notes & Case Studies /

The search for a better way led to replacing manual screening with a dramatically more productive, mechanical 30 in. (762 mm) diameter VIBROSCREEN circular vibratory screener manufactured by Kason Corporation of Millburn, NJ. With one operator now completing each day’s sorting in less than two hours, the equipment paid for itself in the first season.

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Screw Conveyor with Reversing Flighting Keeps Beef Plant Running

Application Notes & Case Studies /

KWS replaced the shaftless spiral and torque tube with heavy duty shaftless flighting, a stronger torque tube, and full penetration continuous welds on both sides of the flighting. A section of bare pipe was intentionally left for product to discharge. The key to solving the plugging issue was the addition of left-handed reversing flighting. Raw material flowing past the bare pipe section was now introduced to the left-handed flight which was mechanically sharpened by KWS to slice the raw material off, allowing it to fall through the discharge 100-percent of the time. Knowledge and experience provided by KWS is second to none, creating a very cost-effective solution resulting in 100-percent customer satisfaction.

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Custom Drag Conveyor for Hot Pellets in Cargill Animal Feed Plant

Application Notes & Case Studies /

Cargill is one of the largest producers of animal feed products in the world, generating over 20 million tons of feed per year. Cargill feed products support livestock production that ultimately touches the plates of more than one billion people every day. Cargill Animal Nutrition in Ogden, Utah required a custom replacement drag conveyor to handle hot pellets fed directly from their pellet mill. The existing equipment was located within a highly confined area, making the outer dimensions of the replacement drag conveyor critical. The pellets also needed to be conveyed downstream while maintaining their shape and avoiding damage. KWS designed and engineered a long-lasting custom conveying solution for Cargill.

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Powderization of Dried Chili Peppers

Application Notes & Case Studies /

Chili pepper is a “hot” spice used in the majority of Mexican-style dishes. The size reduction of chili pepper is limited by the hard chili pepper seeds. These hard seeds are very difficult to mill. Therefore, it is important to select a screen with holes that are slightly larger than the chili pepper seeds. Also, chili peppers are heat sensitive. Therefore heat rise may be a concern at a finer particle size.

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Extruded Breakfast Cereal Manufacture

Application Notes & Case Studies /

Coperion K-Tron highly accurate feeders and pneumatic conveying systems are used for transfer, weighing and feeding to the mixer and/or the extrusion step. In addition, Coperion provides food components that fulfill the highest demands in hygiene ,easy cleaning and gentle product handling. Coperion high efficiency extruders are usedfor the production of a variety of cereal types, including cold formed pellets for flaked cereal, direct expanded and coextruded cereals, as well as puffed cereal types. Innovations in material handling and extrusion for RTE cereal manufacture are an integral part of the overall Coperion systems solution.

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Screening Lumps and Foreign Particles from Sugar

Application Notes & Case Studies /

Each of the high-capacity VIBROSCREEN units can screen up to 36 tons/hr. The rate at which material passes through the screeners depends in part on the last time they were cleaned. In conformance with GMP requirements, SBS cleans the screeners with steam and hot water either once a week or after a load. Personnel inspect the screeners after every loading operation to see if immediate cleaning is required. All material contact surfaces are of 304 stainless steel.

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