蓖麻蒴果剥壳装置关键部件改进设计与试验

该研究针对蓖麻蒴果的物性特点,以提高其剥壳率和降低破损率为目标,研制了蓖麻蒴果剥壳装置,对关键部件进行了改进设计与力学分析,建立了力与变形的数学模型。利用MATLAB进行运算,得出了挤压力P与轧角α、辊筒变形量ΔR、两辊筒间隙、蓖麻蒴果直径和辊筒直径的关系。明确了剥壳过程中各种影响因子间的相互制约关系,确定了影响蓖麻蒴果剥壳的主要因素是辊筒转速、辊筒间隙和辊筒差速,提出了影响剥壳率和破损率的优化方案:剥壳率优化的因素水平组合是辊筒转速为10r/min,辊筒间隙为18mm,辊筒差速为30r/min;破损率优化的因素水平组合是辊筒转速为10r/min,辊筒差速为30r/min,辊筒间隙为12mm,研究结果可为同类剥壳机械的优化设计提供理论支持和技术参考。

Improvement design and test to key components of castor capsule hulling device

A hulling device was designed and optimized based on the physical characteristic of castor capsule in order to increase hulling rate and decrease breaking rate.A mathematical model of force and deformation was proposed.The relationship among extrusion pressure P,rolling angle,roller deformation ΔR,clearance between two rollers,diameter of castor capsule and diameter of roller were obtained by MATLAB calculation.Results showed that rotation rate of rollers,clearance between two rollers and rate differential between rollers were main factors to the castor capsules’ hulling.The final optimized parameters for the best hulling rate were rotation rate at 10 r/min,clearance between rollers 18 mm,rate differential 30 r/min,while factors combination of optimizing breaking rate were rotation rate 10r/min,clearance between rollers 12 mm,rate differential 30 r/min.And the optimized parameters for the best breaking rate were rotation rate at 10r/min,clearance between rollers 12 mm,rate differential 30 r/min.This research provides a reference for relative hulling device design and mechanism analysis.