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Introduction of new precision size grader for green beans
Key Technology expands their family of rotary sizing and grading systems for green beans, which includes their Sliver Sizer Remover (SSR), Precision Size Grader (PSG) and Rotary Size Grader (RSG). With the introduction of a new 14-roller PSG, Key enables processors to replace drum graders with minimal impact to surrounding equipment. The 14-roller PSG provides four rollers more than previous systems to improve grading performance. The PSG separates beans by diameter, maintaining accuracy over time to help processors make grade while maximizing yield.
Ideal for grading snipped and unsnipped whole and cut green beans for fresh pack, frozen and canned product applications, Key’s rotary sizing and grading systems are available in widths of 2, 3, 4 or 5 feet (0.6 to 1.5 meters). All are 100 percent metric, with metric fasteners, bearings, shafts and sprockets. Achieving capacities of less than 4,000 and up to 13,000 lb. per hour (1.8 to 5.9 metric tons), processors rely on Key’s rotary sizing and grading systems at multiple points along their production lines.
For frozen and canned green beans, SSRs are often found outside the factory at receiving where they grade a digital sorter’s reject stream to reclaim good product from field debris. After snippers, RSGs remove stems and small pieces prior to digital sorting to maximize the performance of the sorter by reducing its load. The main grading area usually follows digital sorting where one or more PSGs are used to separate green beans into two or more grades by diameter.
For fresh pack green beans, a typical production line layout has a PSG feeding an RSG upstream of a digital sorter. Utilizing this sequence of mechanical separation systems and optical sorting helps customers achieve the highest possible product quality and production efficiencies.
“Our SSRs and RSGs have been used by frozen and canned green bean processors for many years. Now, these customers are increasingly using our Precision Size Graders too. The combination of PSGs and our other rotary sizing and grading systems are becoming the new industry standard,” said Jim Ruff, General Manager of the Integrated Solutions Group at Key Technology. “Fresh pack processors are also starting to adopt this technology.
Compared to drum graders, which are complicated machines with many moving parts, Key’s new 14-roller PSGs are simple and robust. PSGs offer a much smaller footprint than drum graders with the same throughput, while achieving gentle handling and reducing maintenance. They hold the grade over time, which improves final product quality and increases yield. With an open design, fully welded frame and one-piece block pan, they enhance sanitation.
When replacing a drum roller on an existing line and matching the footprint is desirable, the new 14-roller system is ideal, says the company.
Visit Key Technology at Fruit Logistica Hall 6.1 Stand A13 and Anuga FoodTec Hall 4.2 Stand: B070 C079.
Tel: +1 509 529 2161
Publication date: 1/25/2018
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