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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (17): 251-254.doi: 10.11924/j.issn.1000-6850.casb14120184

所属专题： 油料作物

• 工程 机械 水利 装备 • 上一篇    下一篇

蓖麻籽直筒式压榨侧向压力系数的理论研究

柯佳见,黄志辉,杨星星,白鹏展,刘汝宽,肖志红   

  1. 中南大学 机电工程学院,中南大学 机电工程学院,中南大学 机电工程学院,中南大学 机电工程学院,湖南省林业科学院,湖南省林业科学院
  • 收稿日期:2014-12-26 修回日期:2015-03-10 接受日期:2015-03-16 出版日期:2015-07-27 发布日期:2015-07-27
  • 通讯作者: 柯佳见
  • 基金资助:
    国家自然科学基金 “改性 SnO2中空纤维催化裂解木本植物油制备富烃基燃料油” (31470594)； 国家林业局林业公益性行业科研专项 “近临界流体萃取蓖麻油关键技术研究” (201304608)。

Theoretical Research on Lateral Pressure Coefficient in Castor Seeds Plunger Pressing

  • Received:2014-12-26 Revised:2015-03-10 Accepted:2015-03-16 Online:2015-07-27 Published:2015-07-27

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摘要： 为建立蓖麻籽直筒式压榨侧向压力系数的理论公式，以便于合理地确定直筒式压榨机的榨筒参数，通过进行蓖麻籽直筒式单轴压榨试验，获取蓖麻籽压榨坯密度、侧向应力和轴向应力。试验建立的压榨坯密度与轴向应力的关系曲线和金属粉体压制曲线近似，由此利用金属粉体压制公式进行数据拟合，同时利用试验数据建立了侧向压力系数与轴向应力关系曲线。理论公式计算值与试验实测值的最大相对误差为24.74%，平均误差7.56%，证明了基于压榨塑性模型推导过程建立的侧向压力系数理论模型能较好地描述蓖麻籽侧向压力系数变化。

关键词: 无融合生殖甜菜, 无融合生殖甜菜, 染色体组型, 相对长度, 统计分析

Abstract: To legitimately determine the parameters of pressing cylinder, theoretical formula of lateral pressure coefficient regarding to axial stress of castor seeds was set up through plunger type uniaxial pressing tests on castor seeds, and density of compacted residues of castor seeds, lateral stress and axial stress were obtained. The relation curve about density of compacted residues and axial stress obtained by tests was approximate to the pressing curve of metal powders. Thus we utilized the density formula in the process of pressing metal powders to fit the data, and the relation curve about lateral pressure coefficient and axial stress obtained by tests was built. The maximum relative error of theoretical and measured values was 24.74% and the average error was 7.56%, which proved that theoretical model of lateral pressure coefficient based on the process of deducing the plastic model could well describe the changes of lateral pressure coefficient of castor seeds.