3MQ-600型导流式气流辅助喷杆弥雾机研制与试验

为减少药液的飘失和雾滴的穿透力,提高药液利用率,设计了3MQ-600型导流式气流辅助喷杆弥雾机,利用拖拉机液压和动力输出带动液压马达、轴流风机、隔膜泵等部件工作。在风筒内部加装的新型栅格状导流器,优化了风筒内的流场结构,减小了因涡流而导致的能量损耗。试验结果证明,与无风幕喷雾相比,沿喷杆方向的雾滴个数平均值提高了29.5%,变异系数降低了78.5%;飘失量减少45%以上;在雾滴对作物冠层穿透性方面,雾滴在作物中下层沉积量50.8%。该机具有较高的减飘性能和雾滴沉积性能,农药利用率更好。

Development and experiment on 3MQ-600 type air-assisted boom sprayer with air-deflector

To reduce droplets drifting and improve the droplets penetration and utilization, 3MQ-600 type air-assisted boom sprayer with air-deflector was designed. Hydraulic motor, axial fan, diaphragm pump and other components were driven by tractor and hydraulic pumps. The new grid-like deflector was installed in the air duct, and the flow structure inside the duct was optimized. Experimental results showed that, compared with no wind screen spraying, the average number of droplets increased by 29.5% and the coefficient of variation decreased by 78.5% along the boom in the uniformity of spraying volume, and droplets drift decreased by 45%, and droplet deposition in the middle and bottom parts of crops reaches 50.8% in the crop canopy droplet penetrability. The machine has high performance and reduces drift droplet deposition performance, better utilization of pesticides.