Abstract
The authors noted the disadvantages of fan sprayers such as OVH-600 and VP-1, associated with uneven application of pesticides due to the oscillatory motion of the working parts, especially in the junction of adjacent passages. (Research purpose) To increase the uniformity of the pesticide solution application over the entire width of the fan sprayer. (Materials and methods) The JV «Agriхim» developed a universal fan sprayer designed for the treatment of field crops, orchards and vineyards controlled by air-droplet flow. It was shown that the number of nozzles depends on the technological scheme of operation and the width of the sprayer. (Results and discussion) The authors determined the optimal number of injectors – 25 pieces. Depending on the flow rate of the working solution, three groups of tips were distinguished. (Conclusions) The authors revealed that the new design eliminates oscillatory movements of the working parts of the sprayer, a significant width (24 meters vs. 16 meters in production models) allows to increase dramatically the productivity of work, and the number of changeovers is minimized. They simplified and cheapened the design of the sprayer due to the rejection of a number of kinematic pairs and drives. They increased reliability of the unit, eliminating rubbing and moving parts and components. They presented the layout of 25 nozzles for high-quality pesticide treatment: 5 rear central nozzles were installed on the air ducts at an angle relative to the soil surface, and on the opposite direction of the air ducts placed 3 and 7 nozzles in each side of the axis of symmetry of the sprayer. It was calculated that the rate of flow of the working fluid in the range of 100-500 liters per hectare can be adjusted by changing the pressure in the system from 2 to 8 bar and the working speed from 3 to 7 kilometers per hour.
Highlights
Universal fan sprayer for treatment of field crops, orchards and vineyards based on controlled air-droplets: a-rear view; b-top view 1 – frame; 2 – fan; 3 – pipe; 4 and 19 – inclined blow nozzles; 5, 6, 13, 18 and 20 – spray tips; 7 and 17 – air flow guides; 8 and 16 – screw mechanisms; 9 and 15 – hollow cylinders; 10 and 14 – left and right air ducts; 11 – box; 12 – truncated flap; 21 – blow tubes вить конструкцию опрыскивателя
Industrial design of a universal fan sprayer вентиляторного опрыскивателя при неизменном количестве форсунок 25 шт
Summary
В СП «Agriхim» разработали универсальный вентиляторный опрыскиватель для обработки полевых культур, садов и виноградников с управляемым воздушно-капельным потоком по всей ширине захвата агрегата в пределах ±90° от оси симметрии опрыскивателя (в общей сложности 180°), то есть по всему периметру зоны обработки и обеспечивающим при этом установленную норму расхода рабочего раствора. Опрыскиватель имеет гидросистему и резервуары для рабочего раствора или жидкости
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