扇形喷头球头结构建模与磨损试验  

Spherical-top Structure Mathematical Model and Wear Experiments of Flat-fan Nozzle

作　　者：翟恩昱[1] 郑加强[1] 

机构地区：[1]南京林业大学机械电子工程学院,南京210037

出　　处：《农业机械学报》2011年第8期65-69,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金："十一五"国家科技支撑计划资助项目(2006BAD08A12);国家林业局"948"项目(2007-4-20);江苏省"六大人才高峰"资助项目(07-G-21)

摘　　要：针对扇形喷头球头处的复杂结构以及农药中固体颗粒对喷头内表面的冲蚀情况,运用立体几何方法建立了扇形喷头基本结构尺寸的数学方程,并对其进行力学分析。结果表明,扇形喷头球头处x向磨损最严重。通过试验验证了理论分析,建立了时间和基本结构尺寸的变化对磨损率的影响关系式。The complex structure on the spherical-top of flat-fan nozzle orifices and the erosion situation of solid pesticide on the inner surface of nozzle were studied.Firstly,a mathematical equation of the basic structure was established according to the solid geometry.Secondly,the most significant wear in the x-axis of the spherical-top of fan orifices was concluded through mechanical analysis.Finally,the theoretical analysis was verified through the experiments,and the wear rate relationship was established with the spraying time and the dimensional change of the spherical-top of flat-fan orifices.

关 键 词：扇形喷头 磨损 力学分析 

分 类 号：S49[农业科学—植物保护] TH117.1[机械工程—机械设计及理论]