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Electronic coffee grains separator

Sanz Uribe, Juan Rodrigo and Pabón Usaquén, Jenny Paola and Cardona Duque, Julián Andrés and Ramos Giraldo, Paula Jimena and Oliveros Tascón, Carlos Eugenio (2011) Electronic coffee grains separator. Revista Facultad Nacional de Agronomía Medellín; Vol. 64, núm. 2 (2011) 2248-7026 0304-2847 .

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Resumen

Accurate coffee sorting is a response to pressures for product quality and to a growing market for specialty coffees. One of the major challenges in this regard is to prepare the raw coffee fruits for sorting in one-by-one electronic machines. In this paper, we present a mechanical device developed to separate clusters and impurities from the main process. The mechanical device consists of two inclined belt conveyors with upward motion, working in series. This arrangement conveys upwards any elements with more than three contact points on the belt’s flat surface, while quasi-spherical elements (fruits) roll down on the belts. The experimental set up was designed to allow each belt’s inclination and speed to vary, in order to run a 3 x 3 factorial treatment design (Three inclinations: 10º, 14º and 18º and three speeds: 0.17, 0.20 and 0.24 m s-1). The belt transport surface material was PVC. The best performance was obtained at the speed of 0.20 m s-1 and between 10º and 14º of inclination. After these findings, three treatments were conducted at a working speed of 0.20 m s-1 and three inclinations between 10º and 14º, finding the best performance at 11º. In these conditions the mean efficacy of separation was 98.8%, varying within a range between 97.5% and 100%. The resulting system from this research work is suitable to run as pretreatment of one-by-one electronic sorters of coffee and coffee-like products.

Tipo de documento:Artículo - Article
Información adicional:Se autoriza la reproducción sin ánimo de lucro de los materiales, citando la fuente.
Palabras clave:Agro industrial machinery, raw material preparation, separation of clusters, automation.
Unidad administrativa:Revistas electrónicas UN > Revista Facultad Nacional de Agronomía Medellín
Código ID:30573
Enviado por : Dirección Nacional de Bibliotecas STECNICO
Enviado el día :30 Junio 2014 12:17
Ultima modificación:18 Agosto 2014 19:07
Ultima modificación:18 Agosto 2014 19:07
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