| 吕书林1,2， 张法楷2， 于晏同2， 丁学芳2， 赵有斌3， 任嘉嘉1,2， 相海1,2.应用于黄精预处理的挤压膨化机挤压结构仿真优化[J].中国油脂,2026,51(4):.[LYU Shulin1,2， ZHANG Fakai2， YU Yantong2， DING Xuefang2，
ZHAO Youbin3， REN Jiajia1,2， XIANG Hai1,2.Simulation optimization of extrusion structure of extrusion puffing machine applied to Polygonatum sibiricum pretreatment[J].China Oils and Fats,2026,51(4):.] |
| 应用于黄精预处理的挤压膨化机挤压结构仿真优化 |
| Simulation optimization of extrusion structure of extrusion puffing machine applied to Polygonatum sibiricum pretreatment |
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| DOI：10.19902/j.cnki.zgyz.1003-7969.250183 |
| 中文关键词: 挤压膨化机 黄精 挤压结构 仿真 |
| 英文关键词:extrusion puffing machine Polygonatum sibiricum extrusion structure simulation |
| 基金项目:国家重点研发计划项目（2022YFF1100305） |
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| Author Name | Affiliation | | LYU Shulin1,2， ZHANG Fakai2， YU Yantong2， DING Xuefang2，
ZHAO Youbin3， REN Jiajia1,2， XIANG Hai1,2 | 1.Chinese Academy of Agricultural Mechanization Science Group Co. , Ltd. , Beijing 100083, China
2.China Machinery Kangyuan Cereals and Oils Equipment（Beijing）Co. , Ltd. , Beijing 100083, China
3.Zhejiang Sanzhong Grain and Oil Technology Co. , Ltd. , Huzhou 313217, Zhejiang,China |
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| 中文摘要: |
| 旨在为黄精挤压膨化机挤压结构的合理设计提供依据和参考，从而实现黄精中黄酮的高效提取。以黄精为挤压对象，建立挤压结构仿真模型，依据黄精流动规律，采用ANSYS软件进行仿真模拟，以螺杆均化段螺距、螺杆螺棱与机筒内壁间隙为变量，采用单因素试验考察二者对黄精挤压流场分布的影响，并确定螺杆均化段螺距、螺杆螺棱与机筒内壁间隙合理参数范围。结果表明：在挤压过程中，螺杆均化段螺距、螺杆螺棱与机筒内壁间隙对黄精挤压流场分布均具有显著影响，综合分析不同螺杆均化段螺距、螺杆螺棱与机筒内壁间隙对挤压过程中压强差、剪切速率、模板出口速度分布的影响，得出合理的螺杆均化段螺距为30~38 mm、螺杆螺棱与机筒内壁间隙为0.4~0.8 mm，在此条件下挤压结构既有较高的建压能力和剪切速率，也能保证黄精的挤出均匀性，从而确保黄精的挤压膨化效果，进而有利于黄精中黄酮的提取。 |
| 英文摘要: |
| The aim is to provide a basis and reference for the rational design of the extrusion structure of the Polygonatum sibiricum extrusion puffing machine, so as to achieve efficient extraction of flavonoids from Polygonatum sibiricum. Taking Polygonatum sibiricum as the extrusion object, a simulation model of the extrusion structure was established. Based on the Polygonatum sibiricum flow law, simulation was carried out using ANSYS software, and with the pitch in the homogenization section and the gap between the screw flight and the barrel inner wall as variables, the influence of both of them on the Polygonatum sibiricum extrusion flow field distribution were revealed by single factor experiment, and the reasonable parameter ranges for the pitch in the homogenization section and the gap between the screw flight and the barrel inner wall were determined. The results showed that during the extrusion process, the pitch in the homogenization section and the gap between the screw flight and the barrel inner wall had significant impact on the distribution of the flow field during Polygonatum sibiricum extrusion. Comprehensive analysis of the effects of different pitches in the homogenization section and gaps between the flight and the barrel inner wall on pressure difference, shear rate, and mold outlet velocity distribution during the extrusion process revealed that the reasonable parameter range for the pitch in the homogenization section was 30-38 mm, and the gap between the screw flight and the barrel inner wall was 0.4-0.8 mm. Under these conditions, the extrusion structure has both high pressure building capacity and shear rate, while also ensuring the uniformity of Polygonatum sibiricum extrusion, thereby ensuring the extrusion and puffing effect of Polygonatum sibiricum and facilitating the extraction of flavonoids from Polygonatum sibiricum. |
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