| 卧式植保混药机设计及其混合均匀性模拟研究 |
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| 引用本文： | 曹先洪,杨振杰,张慕天,余杨.卧式植保混药机设计及其混合均匀性模拟研究[J].中国农机化学报,2021,42(8):67. |
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| 作者姓名： | 曹先洪 杨振杰 张慕天 余杨 |
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| 作者单位： | 云南工商学院智能科学与工程学院;云南农业大学机电工程学院; |
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| 基金项目： | 公益性行业(国土)科研专项(201511003—3) |
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| 摘 要： | 针对传统混药过程中混合不均匀等问题,设计一种卧式植保混药机并对其混合均匀性进行模拟试验。首先对混药机的搅拌功率、输药、输水装置和混药搅拌装置等关键部件进行设计,其中搅拌器的功率为6 W,搅拌轴的直径为30 mm。然后对混药均匀性进行模拟试验,探究混药机结构参数(入口数和桨叶数)对流场、压力场和混药均匀性的影响。研究结果发现,混药机桨叶数对药液流场和压力场影响显著,流场的变化会影响混药均匀性;桨叶数越多对流体内部的搅动越明显,当入口数和桨叶数都为4个时,混药均匀性最高。本文对提高卧式混药机混合均匀性提供理论研究基础。
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| 关 键 词： | 植保 混药机 混合均匀性 压力场 流场 |
Design of horizontal plant protection mixer and its mixing simulation uniformity |
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| Abstract: | For the problem of uneven mixing in the traditional mixing process, a horizontal plant protection mixing machine was designed and its mixing uniformity was simulated. First, the key components of the medicine mixing machine were designed. The horizontal plant protection medicine mixing machine was mainly composed of a water delivery device, a medicine delivery device, a medicine mixing device, and a walking device. The power of the agitator was 6 W and the diameter of the mixing shaft was selected as 30 mm. Based on the above design, the simulation test for the uniformity of the medicine was carried out. The experiment explored the influence of the structural parameters (number of inlets and number of blades) of the mixer on the flow field, pressure field, and uniformity of the mixture. The results of the study found that the number of inlets and the number of blades of the mixing machine had significant effects on the flow field and pressure field of the liquid medicine. The change of the flow field affected the uniformity of the mixing. The more the number of blades, the more obvious the agitation was inside the fluid. When the number of inlets and leaves was 4, the uniformity of the mixture was the highest. This article provides a theoretical research basis for improving the mixing uniformity of the horizontal mixer. |
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