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苦荞麦非热脱壳机试验研制
引用本文:朱新华,范维果,李泽,郭文川.苦荞麦非热脱壳机试验研制[J].中国农业大学学报,2017,22(12):146-155.
作者姓名:朱新华  范维果  李泽  郭文川
作者单位:西北农林科技大学 机械与电子工程学院, 陕西 杨凌 712100,西北农林科技大学 机械与电子工程学院, 陕西 杨凌 712100,西北农林科技大学 机械与电子工程学院, 陕西 杨凌 712100,西北农林科技大学 机械与电子工程学院, 陕西 杨凌 712100
基金项目:陕西省科学技术研究发展计划项目(2015NY001)
摘    要:为克服传统的熟化脱壳工艺中热处理造成苦荞麦营养损失严重的问题,基于对苦荞麦结构特性和现存脱壳机缺点的分析,提出苦荞麦动态调压磨削非热脱壳方法,并研制了脱壳机。该机具有脱壳室压力动态调整机构。通过单因素试验,明确了影响因素的取值范围,在此基础上采用二次正交旋转组合试验分别建立了脱壳率和整仁率与各因素的回归模型。采用多指标优化,确定的最佳参数组合为:磨削间隙2.6mm,磨削气囊压强22.3kPa,揉搓间隙4.0mm,揉搓气囊压强5.1kPa,主轴转速470r/min。在最优参数组合条件下进行验证试验结果表明,整仁率为31.8%,脱壳率为88.1%。脱壳效果不理想的主要原因是脱壳室压力动态调整机构不灵活。

关 键 词:苦荞麦  脱壳机  动态调压  脱壳率  整仁率
收稿时间:2016/11/20 0:00:00

Test and development of an non-thermal tartary buckwheat huller
ZHU Xinhu,FAN Weiguo,LI Ze and GUO Wenchuan.Test and development of an non-thermal tartary buckwheat huller[J].Journal of China Agricultural University,2017,22(12):146-155.
Authors:ZHU Xinhu  FAN Weiguo  LI Ze and GUO Wenchuan
Institution:College of Mechanical and Electronic Engineering, Northwest A & F University, Yangling 712100, China,College of Mechanical and Electronic Engineering, Northwest A & F University, Yangling 712100, China,College of Mechanical and Electronic Engineering, Northwest A & F University, Yangling 712100, China and College of Mechanical and Electronic Engineering, Northwest A & F University, Yangling 712100, China
Abstract:To solve the problem of tartary buckwheat nutrient loss in the traditional boiled hulling process,a new method of nonthermal tartary buckwheat dynamic-pressure grinding hulling was proposed and a hulling machine that had a pressure dynamic adjusting device is developed based on the analysis to the structural feature of tartary buckwheat and the structural defect of exsiting hulling machine.Through single factor experiment,the values of influencing factors was determined,the regression modeles of hulling ratio and perfect kernel ratio were then established respectively by quadratic orthogonal rotary combination tests.Multi parameter optimization was used to determine the optimal parameter combination:Grinding chamber gap 2.6 mm,grinding gasbag pressure 22.3 kPa,robbing chamber gap 4.0 mm,robbing gasbag pressure 5.1 kPa,spindle speed 470 r/min.Under this condition,the perfect kernel ratio and hulling ratio of tartary buckwheat in verification test were 31.8% and 88.1%,respectively.The test result showed that primary reason was the dynamic pressure adjusting device didn''t work well which resulting in dissatisfactory performance of tartary buckwheat hulling.
Keywords:tartary buckwheat  huller  pressure dynamic adjusting  hulling ratio  perfect kernel ratio
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