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Effect of Hopper Angle and Teeth Density on Performance of Cylinder Type Sago Rasping Machine
Darma, Budi Santoso2 and Moh. Arif Arbianto

Papua University and BPTP Papua Barat


Abstract

Rasping is the most frequently useful method to disintegrate or to break down the cellular structure of sago pith for mechanical processing. The objective of this study was to investigate the effect of hopper angle and teeth density on rasping performance of cylinder type sago rasping machine. In the experiment, three levels of hopper angle i.e. 0 (H1), 22.5 (H2) and 45 (H3) and three levels of teeth density i.e. 2.2 cm x4 cm (D1), 2.2 cm x3 cm (D2), and 2.2 cm x 2 cm (D3) were examined. The rasping performance test was carried out by measuring rasping capacity, starch percentage, and starch yield. The experimental results showed that the combination of hopper angle and teeth density significantly affected rasping capacity and starch yield, but did not affect the starch percentage. The highest rasping capacity (1891 kg/hour) and the highest starch yield (790 kg) were resulted under experimental condition of teeth density 2.2 cmx 3 cm with hopper angle of 22.5 degree. In conclusion, the optimum condition to achieve highest rasping performance was teeth density 2.2 cm x3 cm with hopper angle 22.5.

Keywords: cylinder type, hopper angle, rasping capacity, sago rasping machine, teeth density

Topic: Energy and agricultural machinery

Link: https://ifory.id/abstract/w4NTzV9y2UkA

Conference: The 3rd International Symposium on Agricultural and Biosystem Engineering (ISABE 2019)

Plain Format | Corresponding Author (Darma Darma)

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