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ALFRA Dosing & Weighing Technology

Eliminate hand-tipping with ALFRA’s Flexible Component Dosing solutions Hand tipping of animal feed components is labour intensive and subject to human error. It is also complex to automate because of the need to accurately weigh quantities ranging from a few grams to tens of kilograms. In addition, a wide range of components have to be stored in bags or big bags close to the manual weighing station. Fortunately ALFRA has three proven solutions that enable the complete automation of hand tipping on one compact form factor that often fits in the currently available space. Manual dosing of additives in the form of powders and granulates involves hand weighing a range of different ingredients in widely varying quantities. Although this can be partially integrated into a process automation system using barcodes for batch- and ingredient identification, it remains susceptible to error. The answer lies with the ALFRA Flexible Component Dosing systems that not only eliminate hand tipping but also reduce the risk of contamination, guarantee accurate dosing and provide reliable traceability data. They also contribute to a safer working environment because operators are not exposed to toxic or unpleasant ingredients. Setting the standard with the FCD Accommodating 4 to 48 different ingredients in rigid silos or ALFRA’s unique flexible silos, the original Flexible Component Dosing solution uses a ‘weigher-in-weigher’ system for extremely accurate dosing of amounts ranging from roughly 10 g to 100 kg. Working in combination with an ALFRA dosing slide for each silo and the ALFRA dose&weigh control system, this automated solution is ideal for factories that have sufficient height and space to house the silos. Weigher-in-weigher system The weigher-in-weigher system achieves such a high degree of accuracy over a wide dosing range by combining two weighing scales in one hopper. Large quantities are dosed directly into a 100 kg weigher, while smaller quantities are initially dosed into a 5 kg weigher before being emptied into

the hopper. The combined weighing system is mounted on a movable frame (with X- or X/Y-axis movement) that precisely locates it under each dosing position and above the discharge position to eliminate traditional horizontal transportation. To simplify cleaning, the FCD has an additional cleaning position that provides easy access to the hoppers of the combined weighing system. Introducing the compact FCD-C The all-new FCD-C is a compact execution of the FCD that has been specially developed for applications where floorspace is limited yet the accuracy and flexibility of the weigher-inweigher system are still required. It saves precious space by replacing the cleaning position with fold-out access to the weighing system and hopper. The FCD-C is also available with fewer silo positions than the FCD, and thanks to a re-designed hopper that works in combination with a simplified movable frame for the weighing station (pneumatically driven with X-axis movement only), it is an attractively priced solution. Dosing directly from containers Both the FCD and FCD-C solutions require sufficient height to be available in the factory to accommodate silos.For applications where this headroom is not available, ALFRA has developed a unique system that doses directly from interchangeable containers. Called the FCCD (Flexible Container Component Dosing system), this configuration greatly increases operational flexibility and simplifies switching between recipes. The accurate weigher-in-weigher system is also used on the FCCD. The versatility of Dosingtainers Ingredients are first discharged from bags or big bags into the interchangeable containers (called ‘Dosingtainers’), which are either positioned on the FCCD or stored until needed. Every Dosingtainer has a unique ID and is recognizable both visually and via RFid for the control system. Like a silo, data such as content, possible residue, parameters and track-and-trace information are stored in

KSE Process Technology B.V. | Rondweg 27 | 5531 AJ BLADEL | The Netherlands | Tel: +31 (0)497 383818 | www.alfra.nl | info@kse.nl

30 | INTERNATIONAL AQUAFEED | January-February 2015

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Jan | Feb 2015 International Aquafeed magazine  

The January February 2015 edition of International Aquafeed magazine

Jan | Feb 2015 International Aquafeed magazine  

The January February 2015 edition of International Aquafeed magazine