党参种子丸粒化包衣性能仿真与试验

doi:10.3969/j.issn.1004-1524.20241088

浙江农业学报 ›› 2025, Vol. 37 ›› Issue (12): 2615-2624.DOI: 10.3969/j.issn.1004-1524.20241088

党参种子丸粒化包衣性能仿真与试验

朱高烁¹(), 高爱民¹^,^*(), 李百成², 刘康康¹

1.甘肃农业大学机电工程学院,甘肃兰州 730070
2.国家种子加工装备工程技术研究中心,甘肃兰州 730070

收稿日期:2024-12-13 出版日期:2025-12-25 发布日期:2026-01-09
作者简介:朱高烁(2000—),男,湖北襄阳人,硕士研究生,研究方向为农业工程技术与装备。E-mail:550079078@qq.com
通讯作者: *高爱民,E-mail:Gam0624@163.com
基金资助:
甘肃农业大学横向项目(GSAU-JSZR-2024-004)

Simulation and experiment on pelleting coating performance of Codonopsis pilosula seeds

ZHU Gaoshuo¹(), GAO Aimin¹^,^*(), LI Baicheng², LIU Kangkang¹

1. Mechanical and Electrical Engineering College, Gansu Agricultural University, Lanzhou 730070, China
2. National Seed Processing Equipment Engineering Technology Research Center, Lanzhou 730070, China

Received:2024-12-13 Online:2025-12-25 Published:2026-01-09

摘要/Abstract

摘要： 为研究椭球形小籽粒党参种子丸粒化包衣工艺参数对包衣效果的影响,提升党参种子包衣合格率,借助颗粒接触理论,分析党参种子与包衣锅的接触过程,确定党参种子和包衣锅的基本参数。利用EDEM软件构建党参种子和包衣锅的离散元仿真模型,采用单因素试验分别研究包衣锅转速、包衣锅倾角和水粉比例对包衣合格率和离散系数的影响,利用正交试验建立以包衣合格率为响应参数的数学回归模型,通过方差分析得到影响包衣合格率的主次因素,通过响应曲面分析各因素交互作用对包衣合格率的影响。结果表明:影响党参种子包衣合格率的因素从高到低依次是包衣锅倾角>包衣锅转速>水粉比例。基于构建的回归方程得到如下最优参数:包衣锅转速30.7 r·min^-1,包衣锅倾角40.7°,水粉比例0.85,此时,包衣合格率可达93%以上。

关键词: 党参种子, 包衣机, 丸粒化, 小粒种子

Abstract:

To investigate the effects of pelleting coating process parameters on the coating quality of ellipsoidal small Codonopsis pilosula seeds and improve their coating qualification rate, this study analyzed the contact process between seeds and coating pan using particle contact theory to determine the basic parameters of both components. A discrete element method (DEM) simulation model was established in EDEM software to simulate the interaction dynamics. Single-factor experiments were conducted to evaluate the influences of coating pan rotational speed, coating pan inclination angle, and water-powder ratio on coating qualification rate and coefficient of variation. Orthogonal experimental design was employed to develop a mathematical regression model with coating qualification rate as the response parameter. The primary and secondary factors affecting coating quality were indentified via analysis of variance (ANOVA), while interactions of factors were explored by response surface methodology (RSM). Results indicated that the influence of factors descended in the order as coating pan incination angle>coating pan rotational speed>water-powder ratio. The optimal parameters were determined based on the constructed regression model as coating pan rotational speed of 30.7 r·min^-1, coating pan incination angle of 40.7°, and water-powder ratio of 0.85, achieving a coating qualification rate above 93%.

Key words: Codonopsis pilosula seeds, coating machine, pelletizing, small seed

中图分类号:

S223.12

朱高烁, 高爱民, 李百成, 刘康康. 党参种子丸粒化包衣性能仿真与试验[J]. 浙江农业学报, 2025, 37(12): 2615-2624.

ZHU Gaoshuo, GAO Aimin, LI Baicheng, LIU Kangkang. Simulation and experiment on pelleting coating performance of Codonopsis pilosula seeds[J]. Acta Agriculturae Zhejiangensis, 2025, 37(12): 2615-2624.

图/表 13

图1 种子丸粒化包衣机的结构示意图与实物图 1,药液瓶;2,药液控制阀;3,计量器;4,包衣锅;5,导管;6,控制系统;7,气压泵;8,喷头支架;9,雾化喷头;10,角度调节装置;11,工作平台;12,升降装置;13,支架。

Fig.1 Schematic diagram and physical diagram of the structure of seed pelleting and coating machine 1, Solution bottle; 2, Solution control valve; 3, Metering device; 4, Coating pot; 5, Conduit; 6, Control system; 7, Air pressure pump; 8, Spray nozzle bracket; 9, Atomizing spray nozzle; 10, Angle adjustment device; 11, Work platform; 12, Lifting device; 13, Support frame.

图2 党参种子实物照片

Fig.2 Photos of Codonopsis pilosula seed

图3 种子受力分析图 Fn,种子间法向接触力;Ft,种子间切向接触力;Ff,种子与包衣锅间摩擦力;FN,支持力;Fc,离心力;Fg,重力;ω,包衣锅的角速度。

Fig.3 Force analysis diagram of seeds Fn is the normal contact force between seeds; Ft is the tangential contact force between seeds; Ff is the friction force between seeds and the coating pan; FN is the supporting force; Fc is the centrifugal force; Fg is the gravity; ω is the angular velocity of the coating pan.

图4 党参种子(上)与包衣锅(下)的仿真模型图

Fig.4 Simulation model diagram of Codonopsis pilosula seeds (top) and coating pan (bottom)

表1 仿真参数设置

Table 1 Setting values of simulation parameters

指标 Indicator	种子-种子 Seed-seed	种子-粉料 Seed-powder	粉料-粉料 Powder-powder	种子-锅体 Seed-pot	粉料-锅体 Powder-pot
恢复系数Coefficient of restitution	0.25	0.15	0.18	0.35	0.68
静摩擦系数Coefficient of static friction	0.41	0.58	0.81	0.62	0.45
滚动摩擦系数Coefficient of rolling friction	0.01	0.05	0.05	0.01	0.15

图5 接触颗粒平均数量的动态变化示意图

Fig.5 Schematic diagram of the dynamics of the number of seed-contacting particles

图6 包衣过程混合中期(上)和后期(下)的种子、粉粒混合效果示意图

Fig.6 Schematic diagram of seed and powder mixing effect in the middle stage (top) and late stage (bottom) of coating process

图7 包衣锅转速对包衣效果的影响

Fig.7 Influence of coating pan rotational speed on coating effect

图8 包衣锅倾角对包衣效果的影响

Fig.8 Influence of coating pan inclination angle on coating effect

图9 水粉比例对包衣效果的影响

Fig.9 Influence of water-powder ratio on coating effect

表2 不同编码水平各试验因素的设定值

Table 2 Setting values of factors under different coding levels

编码水平 Coding level	各因素的设定值Setting values of factors
编码水平 Coding level	A/(r·min^-1)	B/(°)	C
-1	25	30	0.80
0	30	35	0.85
1	35	40	0.90

表3 正交试验方案与结果

Table 3 Scheme and results of orthogonal test

试验序号 Test No.	A/(r·min^-1)	B/(°)	C	Y/%
1	35	40	0.80	85.4
2	30	40	0.85	93.7
3	25	45	0.85	80.1
4	25	35	0.85	67.5
5	30	40	0.85	91.7
6	25	40	0.80	76.8
7	30	35	0.80	68.3
8	30	35	0.90	80.8
9	30	40	0.85	93.6
10	25	40	0.90	83.3
11	35	35	0.85	76.3
12	35	40	0.90	82.1
13	30	40	0.85	93.5
14	30	40	0.85	94.7
15	30	45	0.90	78.6
16	30	45	0.80	80.9
17	35	45	0.85	81.2

图10 各因素交互作用对包衣合格率的响应面

Fig.10 Response surface of interaction of factors on coating qualification rate

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党参种子丸粒化包衣性能仿真与试验

Simulation and experiment on pelleting coating performance of Codonopsis pilosula seeds

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