药水后混式生物农药喷洒装置的设计及性能试验

Design and Performance Experiments of Bio-pesticide Spraying Device with Mixing of Pesticide and Water after Spraying

利用生物农药防治病虫害具有安全、有效、无污染等特点,介绍了药水后混式的生物农药喷洒装置结构设计及工作原理,并就其药水混合性能评价进行了理论分析和试验研究,对生物农药喷洒的雾流谱、雾滴粒径等雾化特性以及生物农药活性开展了试验研究。研究结果表明:该生物农药喷洒装置药水混和效率在90%以上,满足生物农药喷洒需求;当风机转速从2 500r/min增大到4 500r/min时,雾流谱均匀,雾滴运动速度快,粒径变小且分布均匀,生物农药活性略微降低,但仍然在90%以上,整机喷洒效果理想。

Use biological pesticides control diseases and insect pests with characteristics such as security, and effective, and no pollution, this article introduces structure design and work principle of biological pesticides spray device with mixing of pesticide and water after spraying. It does some theory analysis and test about its mixed performance evaluation. The article carries out test study on atomization characteristics including biological pesticides spray flow spectrum and droplet diameter and biological pesticides activity. The results suggest that mixed efficiency of biological pesticide spraying device is more than 90% and can meet the demand for bio - pesticide spraying. With fan speed change from 2 500r/min increases to 4 500r/min, mist flow pattern is more uniform, droplet movement speed is quicker, particle size is smaller and more uniform and biological pesticide activity is slightly lower, but still more than 90%. the effect of complete machine spraying are satisfactory.