摘要
为了提高圆盘造粒机在生物炭基肥生产过程中原料的混匀效果,针对炭基肥原料的物理参数,建立了圆盘造粒机三维模型。利用EDEM离散元软件模拟了圆盘转速(20、30、40、50、60 r/min)、圆盘倾角(25°、35°、45°、55°、65°)、刮刀安装角度(5°、10°、15°、20°、25°)和混合时间(3~16 s)对混合均匀性的单因素影响,采用变异系数作为评价指标,得到了单因素条件下混合均匀性最佳的工作参数;并在此基础上再利用Design-Expert软件对圆盘造粒机的运行参数进行多因素响应面法优化。结果表明:随着圆盘转速、圆盘倾角、刮刀角度的增加,原料的混合均匀性先增加后降低,混合时间对混合均匀性的影响在第6 s后趋于平稳;当圆盘转速为25 r/min、圆盘倾角为56°、刮刀安装角度为18°、混合时间为12 s时,炭基肥原料混合变异系数最低,圆盘造粒机的混合均匀性最好。研究可为圆盘造粒机的设计提供参考。
In order to improve the mixing effect of raw materials in the production process of biochar-based fertilizer of disc granulator,focused on the physical parameters of carbon-based fertilizer raw materials and established a three-dimensional model of the disc granulator.Using the EDEM discrete element software,simulated the effects of disc rotation speed(20,30,40,50,60 r/min),disc inclination angle(25°,35°,45°,55°,65°),scraper installation angle(5°,10°,15°,20°,25°),and mixing time(3-16 s)on the uniformity of the mixture as a single factor,using the coefficient of variation as the evaluation index.The optimal operating parameters for the uniformity of the mixture under single-factor conditions were obtained.On this basis,the Design-Expert software was used to optimize the operating parameters of the disc granulator by multi-factor response surface method.The results showed that with the increase of disc speed,disc inclination angle and scraper angle,the mixing uniformity of raw materials increased first and then decreased,and the effect of mixing time on mixing uniformity tended to be stable after 6 s.When the disk speed of the disk granulator was 25 r/min,the disk angle was 56°,the scraper installation angle was 18°,and the mixing time was 12 s,the mixing CV of the carbon-based fertilizer raw materials was the lowest,and the mixing uniformity was the best.The research provided a theoretical reference for the design of disc granulators.
作者
张霞
李照勇
胡文涛
曾伟达
彭秀玲
黄峻伟
Zhang Xia;Li Zhaoyong;Hu Wentao;Zeng Weida;Peng Xiuling;Huang Junwei(Mechanical and Electrical Engineering,Yunnan Agricultural University,Kunming 650500,China;Luliang County Agricultural Mechanization School,Qujing 655699,China)
出处
《农机化研究》
北大核心
2026年第5期265-272,共8页
Journal of Agricultural Mechanization Research
基金
云南省科学技术厅项目(202401BD070001-067)。
关键词
生物炭基肥
圆盘造粒机
EDEM
变异系数
混合效果
biochar-based fertilizer
disc granulator
EDEM
coefficient of variation
blending effects
