Development of peeling and Shelling Mechanism for Coffee Beans
碩士 === 國立嘉義大學 === 生物機電工程學系研究所 === 94 === Development of a machine with peeling and shelling functions together was the objective of this study, which would resulted in production of coffee beans by a single mechanism. Therefore, investigation of a peeling and shelling mechanism for farmer to produce...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2006
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| Online Access: | http://ndltd.ncl.edu.tw/handle/95708406733180505965 |
| Summary: | 碩士 === 國立嘉義大學 === 生物機電工程學系研究所 === 94 === Development of a machine with peeling and shelling functions together was the objective of this study, which would resulted in production of coffee beans by a single mechanism. Therefore, investigation of a peeling and shelling mechanism for farmer to produce coffee bean right after harvesting in order to increase their profit was the main goal of this study. A steel plate was used to replace the die casting in the commercial mechanism in this study to modify the peeling and shelling. Experimental results indicated that shelling could reach 73.25% and damage rate was 9.81% at the conditions of rotation rate of 2685RPM and clearances of upper and lower part to be 10 and 9 mm respectively for the coffee bean with moisture content of 50%； shelling could reach 61.5% and damage rate was 1.76% at the conditions of rotation rate of 2388RPM and clearances of upper and lower part to be 9 and 8 mm respectively for the coffee bean with moisture content of 40%.Therefore, adjusting moisture of coffee bean to a proper level prior processing could achieve peeling and shelling effectively with the developed mechanism.
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