基于EDEM的螺旋搅龙排肥装置对排肥量影响的试验研究  

Experiment on the Effect of EDEM-Based Auger Churn Fertilizer Discharging Device on the Amount of Fertilizer Discharged

作　　者：史健伟 李海亮 邹华芬 严晓丽 孙海天 王宏轩 汪春[1,2] Shi Jianwei;Li Hailiang;Zou Huafen;Yan Xiaoli;Sun Haitian;Wang Hongxuan;Wang Chun(College of Engineering,Heilongjiang Bayi Agricultual University,Daqing 163319,China;Chinese Academy of Tropical Agricultural Sciences,South Subtropical Crops Research Institute/National Soil Quality Zhanjiang Observation and Experimental Station,Zhanjiang 524091,China;College of Mechanical and Electrical Engineering,Henan Agricultural University,Zhengzhou 450002,China;Zhanjiang Experimental Station,Chinese Academy of Tropical Agricultural Sciences,Zhanjiang 524013,China)

机构地区：[1]黑龙江八一农垦大学工程学院,黑龙江大庆163319 [2]中国热带农业科学院南亚热带作物研究所/国家土壤质量湛江观测实验站,广东湛江524091 [3]河南农业大学机电工程学院,郑州450002 [4]中国热带农业科学院湛江实验站,广东湛江524013

出　　处：《农机化研究》2025年第8期130-139,共10页Journal of Agricultural Mechanization Research

基　　金：海南省自然科学基金(322QN375,322QN416);中国热带农业科学院基本科研业务费专项资金(19CXTD-31)。

摘　　要：为优化改进基质覆盖式免耕播种机排肥装置在玉米耕作中的排肥效果,首先通过理论计算得出螺旋搅龙排肥装置结构参数,然后采用离散元法(EDEM)仿真螺旋搅龙排肥装置和样机试验相结合的方法,以排肥装置的排肥量为评价指标,研究了螺旋叶片直径、螺距和排肥轴转速对排肥量的影响,通过正交试验分析工作参数对排肥量的贡献次序。试验结果表明:螺旋搅龙排肥装置排肥量的范围在159.18~516.64 g/s之间,仿真与样机试验排肥量的平均相对误差为9.95%,螺旋搅龙排肥装置的排肥量随工作参数的增大而增大,工作参数对排肥量影响程度由大到小依次为螺距、螺旋叶片直径、排肥轴转速。仿真与样机试验结果的方差分析结论相同,符合设计要求,验证了仿真试验与数学模型的有效性。In order to optimize and improve the fertilizer discharging effect of the fertilizer discharging device of substrate covered no-till planter in corn tillage,firstly,the structural parameters of the screw churn fertilizer discharging device were derived from theoretical calculations,and the effects of the diameter of the screw blades,the pitch of the screw,and the rotational speed of the discharging shaft on the discharging amount were studied by the method of combining the simulation of the screw churn fertilizer discharging device and the prototype test using the discrete element method(EDEM)and taking the discharging amount of fertilizer of the fertilizer discharging device as the evaluation index.The order of contribution of working parameters to fertilizer discharge was analyzed by orthogonal test.The test results showed that:the range of fertilizer discharge of screw churn fertilizer discharging device was from 159.18 to 516.64 g/s,and the average relative error between simulation and prototype test on fertilizer discharge was 9.95%,the fertilizer discharge of screw churn fertilizer discharging device increased with the increase of working parameters,and the influence of working parameters on the fertilizer discharge in the following order:pitch,screw blade diameter,fertilizer discharging shaft rotational speed.The ANOVA conclusions of the simulation and prototype test results were the same,which met the design requirements and verified the validity of the simulation test and mathematical model.

关 键 词：螺旋搅龙 排肥装置 优化改进 离散元 正交试验 

分 类 号：S223.24[农业科学—农业机械化工程]