Justification of the layout and parameters of a pneumatic slot atomizer with a flow chamber

Abstract

BACKGROUND: One of the measures that helps to maintain the productivity of fruit and berry crops is chemical treatment with herbicides. For perennial crops, a certain difficulty lies in the high-quality processing of the tree trunk zone. In addition, not all sprayers ensure uniform dispersion of chemicals.

AIM: Development of the device and justification of its optimal parameters, ensuring uniform chemical treatment of perennial fruit crops, including the tree trunk zone.

METHODS: The design of the new sprayer does not have a pumping device, and the working fluid flows from the tank to the sprayers by gravity. The slot atomizer promotes dispersion into small droplets of uniform size. A protective apron is used to prevent small droplets from being carried away by the wind. For high-quality treatment of the tree trunk area, the sprayer is equipped with a turning device.

RESULTS: The justification for the optimal installation angle of the rotating device was carried out according to the following criteria: the untreated area and the area treated twice. As a result, for processing trees with a trunk diameter of no more than 300 mm, the optimal installation angle of the turning device was 58-60 degrees. The parameters of the slot atomizer were justified based on the criterion of maximal productivity. A maximum fluid flow of 207.4 ml/min can be achieved with a feeding tube opening of 1.897 mm and an air nozzle with a width of 9.492 mm and a height of 0.509 mm.

CONCLUSION: The atomizer design has been proposed, the novelty of which is confirmed by a patent of the Russian Federation. Its optimal parameters are justified to ensure high-quality treatment with liquid chemical pesticides.

Keywords

sprayer / liquid pesticides / weed control / optimization

References

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