农业机械学报2018，Vol.49Issue(4)：130-139,10.DOI:10.6041/j.issn.1000-1298.2018.04.015
静电喷嘴雾化特性与沉积效果试验分析
Analysis and Experiment on Atomization Characteristics and Spray Deposition of Electrostatic Nozzle
摘要
Abstract
Electrostatic charging of sprayed pesticide was realized in electrostatic spray nozzle design,which improved plant coverage and reduced wasted pesticide as well as soil pollution.The performance of electrostatic spray nozzles depended on the charge to mass rate of droplets.The preface illustrated six factors that can impact on the efficiency of the induction nozzle and the electrostatic spraying agricultural application,including nozzle geometry,nozzle air pressure,nozzle flow rate,applied voltage,electrode geometry,electrode position and materials,the properties of the sprayed liquid used and environment factors around the spray.In order to study the effect of electrode material on atomization characteristics and charge performance of electrostatic nozzle,optimize the spray parameters and explore the influence of electrostatic force on spray deposition,four experimental variables were designed,including the electrode material,electrode voltage,spray pressure and hole diameter of electrostatic nozzle,and the indoor atomization and deposition test were carried out.The results showed that the optimal electrode voltage was 8 kV,the optimal electrode material was copper and the optimal spray pressure was 1.7 × 105 Pa.Compared with non-electrostatic spraying,the spray swath width of electrostatic nozzle was increased by 50 cm.Of all droplets,the electrostatic force had the most effect on the droplets (between 50 μm and 120 μm),making the deposition amount double.And the spray droplet density was decreased as the droplet size was increased over 120 μm.The size of the most droplets deposited on target was under 180 μm.Therefore,those electrostatic nozzles designed were suitable for crops whose optimum biological size was 180 μm or under 180 μm.关键词
静电喷嘴/雾化特性/沉积效果/电极材料/作业参数Key words
electrostatic nozzle/atomization characteristics/deposit performance/electrode materials/operating parameter分类
农业科技引用本文复制引用
兰玉彬,张海艳,文晟,李晟华..静电喷嘴雾化特性与沉积效果试验分析[J].农业机械学报,2018,49(4):130-139,10.基金项目
国家重点研发计划项目(2016YFD0200700)、广东省科技计划项目(2017B010117010)和广州市科技计划项目(201707010047) （2016YFD0200700）
