影响空心圆锥雾喷头雾滴粒径的多因素分析  

Analysis of multi-factor influence on droplet size distribution of hollow cone nozzle

作　　者：胡桂琴[1] 许林云[1] 周宏平[1] 崔业民 

机构地区：[1]南京林业大学机械电子工程学院,江苏南京210037 [2]南通市广益机电有限公司,江苏南通226631

出　　处：《南京林业大学学报（自然科学版）》2014年第2期133-136,共4页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：国家林业公益性行业科研专项项目(201004052);江苏高校优势学科建设工程资助项目(PAPD)

摘　　要：雾滴粒径对农药在作物上的沉积分布性能及病虫害防治效果起决定性作用。采用HELOS/QUIXEL型号激光粒度仪，对新型空心圆锥雾喷头在不同喷芯直径、喷嘴直径、喷雾压力及喷雾距离下的雾滴粒径进行试验研究。应用方差分析及正交分析方法分析了各因素对雾滴粒径的影响；通过回归分析建立了雾滴粒径与主要影响因素之间的回归模型。结果表明：该喷头雾滴粒径范围为70～120μm，满足农作物病虫害防治要求；喷嘴直径（ D）、喷雾压力（ P）、喷雾距离（ H）对雾滴粒径具有显著性影响，影响效果由强到弱的顺序为喷嘴直径、喷雾距离、喷雾压力；雾滴粒径（ D50）与主要影响因素间的回归模型为D50＝78？53＋0？00029 H2＋17？76 D2-0？077 HP，拟合程度较高。Droplet size has an important effect on the deposit distribution properties and pest control. In order to study the performance of the new hollow cone nozzle, HELOS/QUIXEL laser particle size analyzer was applied to measure droplet size at different nozzle structure parameters, spray pressure and spray distance. The relationship between different test parameters and the droplet size was then analyzed by variance analysis and orthogonal analysis. Furthermore the mul-tiple regression model between the droplet size and main factors was constructed. The results showed that the range of droplet size is 70-120 μm, and meet the requirement of pest control. The nozzle diameter, spray pressure, and spray distance had significant influence on droplet size （α = 0.05）, and the nozzle diameter was the strongest one, spray pressure was the weakest. The regression model was D50=78？53＋0？000 29 H2＋17？76 D2-0？077 HP, which had a high fitting degree, could provide evidence for optimization and series production of nozzle.

关 键 词：空心圆锥雾喷头 雾滴粒径 喷头结构参数 喷雾压力 喷雾距离 

分 类 号：S776[农业科学—森林工程]