振动力场提高牧草种子丸粒化包衣效果数值模拟与试验

为提高牧草种子丸粒化包衣合格率,对振动力场作用下的小粒不规则牧草种子进行丸粒化包衣研究。运用Solid-Works和离散元仿真软件EDEM建立了包衣锅三维模型及仿真模型,研究了牧草种子丸粒化包衣过程的运动规律。引入振动后的仿真结果表明：在包衣锅转速为40 r/min,包衣锅振动频率为20 Hz,振幅为2 mm,包衣锅倾角为35°的条件下,种群能在不同的时间点、相同的空间区域分布较为离散,种群的运动剧烈加速种粉间的离散程度,促使种粉达到＂沸腾＂状态,使其进入彼此间隙,增大种粉间碰撞摩擦次数,达到丸粒包衣的理想效果。试验结果表明：随包衣锅振动频率的增加,单籽率及有籽率均略有提高,而当振动频率为20...

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Published in农业工程学报 Vol. 33; no. 19; pp. 86 - 93
Main Author 仇义 陈智 侯占峰 宋涛 弭龙凯 邵志威
Format Journal Article
LanguageChinese
Published 内蒙古农业大学机电工程学院,呼和浩特,010018%泰山学院机械与建筑工程学院,泰安,271000 2017
Subjects
丸粒化
仿真
包衣
振动力场
种子
试验
vibration force field
coating
包衣
试验
seeds
simulation
experiments
丸粒化
仿真
种子
振动力场
granulation
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Summary:为提高牧草种子丸粒化包衣合格率,对振动力场作用下的小粒不规则牧草种子进行丸粒化包衣研究。运用Solid-Works和离散元仿真软件EDEM建立了包衣锅三维模型及仿真模型,研究了牧草种子丸粒化包衣过程的运动规律。引入振动后的仿真结果表明：在包衣锅转速为40 r/min,包衣锅振动频率为20 Hz,振幅为2 mm,包衣锅倾角为35°的条件下,种群能在不同的时间点、相同的空间区域分布较为离散,种群的运动剧烈加速种粉间的离散程度,促使种粉达到＂沸腾＂状态,使其进入彼此间隙,增大种粉间碰撞摩擦次数,达到丸粒包衣的理想效果。试验结果表明：随包衣锅振动频率的增加,单籽率及有籽率均略有提高,而当振动频率为20 Hz时,单籽率及有籽率可达到较理想的丸粒化效果;正交试验结果表明：当包衣锅转速为40 r/min,包衣锅振动频率为20 Hz,包衣锅倾角为35°,包衣时间为20 min时,单籽率达到82.08%,包衣合格率达到98.22%,研究结果可为小粒不规则种子包衣提供参考依据。
Bibliography:11-2047/S
Qiu Yi , Chen Zhi , Hou Zhanfeng , Song Tao , Mi Longkai , Shao Zhiwei （1. College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China; 2. College of Mechanical and Architectural Engineering, Taishan University, Taian 271000, China）
seeds; granulation; experiments; coating; vibration force field; simulation
In order to improve the rate of coating and pelleting of forage grass seeds, our team is researching the pellet coating of small-particle irregular forage grass seeds under the action of vibration force field. Besides, we establish the three-dimensional model and simulation model of coating pan by using Solid-Works and EDEM （enhanced discrete element method）. At the same time, the movement law of seed pelleting coating process is studied for forage grass seed. Simulation results show that when the coating pan speed is 40 r/min, the vibrating frequency of coating pan is 20 Hz, and the amplitude is 0.02 mm, the particle swarm can be dispersed at diffe
ISSN:1002-6819
DOI:10.11975/j.issn.1002-6819.2017.19.011