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《Journal of Southwest University(Natural Science Edition)》 2010-09
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Design and Experiment of a Jatropha-Nut Huller

ZHANG Li-hua1,2,ZHANG Wen2,GOU Wen21. Key Lab of Mechanical Transmission,Chongqing University,Chongqing 400030,China;2. Information and Engineering Institute,Sichuan Agricultural University,Ya'an Sichuan 625014,China  
In order to adapt to the industrialization of deep processing of the jatropha-nut (Jatropha curcas L.) and realize its mechanical hulling,the authors of this paper have independently designed an efficient and reliable jatropha-nut huller,carried out an orthogonal experiment of 3 factors (the initial moisture content rate of the jatropha-nut,the speed of the squeeze-wheel and the gap of the squeeze-wheel) with 3 levels for each parameter,and adopted Synthesis Evaluation Method to compare and optimized the three parameters with cracked nut rate and smashed nut rate as the evaluation indexes. The results show that moisture content and extrusion gap have highly significant influence on the comprehensive evaluation value (r=0.01),and roller speed significantly affects it (r=0.05). The order of the influencing factors is extrusion gap jatropha-nut moisture content rate the roller speed. The optimum combination of the parameters is jatropha-nut initial moisture content 20%,roller speed 300 r/min and extrusion gap 5 mm. With the optimized combination of parameters,the hulled nut rate is more than 85%,while the smashed nut rate is less than 10%.
【Fund】: 四川教育厅重点资助项目(07ZA078)
【CateGory Index】: S226.4
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