组合式橡胶籽脱壳机构设计与试验  

Design and test of combined rubber seed shelling machine

作　　者：赵乐然 王涛[1] ZHAO Le-ran;WANG Tao(College of Mechanical and Electrical Engineering,Hainan University,Haikou,Hainan 570228,China)

机构地区：[1]海南大学机电工程学院,海南海口570228

出　　处：《食品与机械》2022年第4期114-120,共7页Food and Machinery

基　　金：海南省自然科学基金(编号:520RC537)。

摘　　要：目的:解决现有的橡胶籽脱壳装置脱壳率、整仁率低,不足以满足不同条件下橡胶籽脱壳需求的问题。方法:设计了一种组合式橡胶籽脱壳机构,通过橡胶籽在凹槽板与旋转刀片的剪切以及对转叶片辊筒挤压、碰撞的组合作用下实现脱壳。运用EDEM离散元软件建立橡胶籽与脱壳机构的离散元模型,并对其脱壳过程进行模拟。采用响应面法分析剪切挤压间隙、叶片辊筒转速、叶片辊筒安装相位对橡胶籽脱壳率、整仁率的影响规律,优化获得最佳工作参数从而进行台架验证试验。结果:所设计的组合式橡胶籽脱壳机,最佳工作参数组合为剪切挤压间隙12.6 mm、叶片辊筒转速300 r/min、叶片辊筒安装相位40.5°。此时,橡胶籽脱壳率为94.09%,整仁率为96.47%。根据最佳参数组合进行台架验证试验,橡胶籽脱壳率为89.67%、整仁率为91.33%。结论:在橡胶籽脱壳装置设计过程中,离散元法可有效分析不同结构参数对性能指标的影响。Objective:In view of the existing rubber seed shelling machine,which have poor shelling and whole-kernel rate,is not enough to meet the needs of rubber seed shelling under different condition,a combined rubber seed shelling machine was designed.Through the combination of cutting and shearing of rubber seeds between the groove plate and the rotary blade,as well as extrusion and collision of the rotary blade roller,the shell is removed.Methods:The discrete element software EDEM was used to establish the discrete element model of rubber seed and shelling machine,and to simulate the separation process.Response surface method(RSM)was used to analyze the influence of shear extrusion clearance,blade roller speed and blade-roller installation phase on rubber seed shelling and whole-kernel rate.The best working parameters were optimized and verified by experiment.Results:The designed combined rubber seed sheller can achieve better shell kernel separation and obtain a higher kernel rate.When the shear extrusion clearance was 12.6 mm,the blade-roller speed was 300 r/min,and the blade-roller installation phase was 40.5°,the shelling rate and whole-kernel rate of rubber seed were 94.09%and 96.47%.According to the best parameter combination,the shelling rate and whole-kernel rate of rubber seed were 89.67%and 91.33%.Conclusion:In the design process of rubber seed shelling,the discrete element method can be effectively used to analyze the influence of different structural parameters on the performance indicators.

关 键 词：橡胶籽 脱壳机 离散元法 脱壳过程 性能试验 

分 类 号：S776.22[农业科学—森林工程]