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静电喷雾技术利用不同的充电方式使农药雾滴带电,并在喷头和目标间形成静电场,从而实现均匀、细化雾滴及提高雾滴在目标物的沉积量、均匀性、吸附性等效果。利用喷头综合性能试验台、激光粒度仪、雾滴感应电流测量系统等试验装置,基于新型静电喷头,分别研究0.6、0.8、1.0 mm的喷嘴孔径和充电电压对静电喷头的雾化性能和荷电性能的影响。结果表明:喷嘴孔径对静电喷头的雾化性能和荷电性能有显著影响;喷嘴孔径越小,雾滴体积中径越小,雾滴荷质比越大;雾化角和沉积量分布与喷嘴孔径有直接关系。
Electrostatic spraying technology uses different charging ways to make the pesticide droplets electrified and form an electrostatic field between the nozzle and the target, so as to achieve even and fine mist droplets and improve the effect of the droplet deposition, uniformity and adsorption on the target objects . Based on the new type of electrostatic spray head, the spray nozzles’ aperture and charge voltage were used to study the atomization performance and charge of the electrostatic spray head respectively by using the testing device such as the nozzle integrated performance test bench, the laser particle size analyzer and the droplet current sensing measurement system, The impact of performance. The results show that the nozzle diameter has a significant effect on the atomization performance and chargeability of the electrostatic nozzle. The smaller the nozzle diameter is, the smaller the diameter of the droplet is and the larger the mass-to-charge ratio of the droplet is. Aperture is directly related.