Prevent fluid loss from spray tips

Abstract

In existing sprayers, including boom sprayers, during operation the working fluid supplied to the system by the pump is regulated by a tap for a pressure-reducing control valve and distributed according to the norm per hectare. At the same time, the working fluid is supplied to the sprayer tips with the appropriate pressure and the amount of working fluid. When the pump is operating, pressure is created in the system with the pressure reducing valve open and the working fluid is supplied to the sprayer booms and tips under pressure, after which spraying takes place from the tips. When the pump does not work then the pressure reducing valve closes. The analysis shows that in all existing sprayers when closing the tap in all cases in the boom pipelines, communications between the pressure reducing valve and the tips there remains a certain amount of working fluid. It is established that this fluid flows from the tips by shaking the rod at idle, due to the centrifugal force in the turning lanes, the difference in the level of the tips in the rod relative to the horizon. This leads to the loss of valuable fluid (water + pesticide) and environmental pollution. The performance of the spraying unit is reduced. This article is devoted to the definition and study in real conditions of the scale of losses in boom sprayers and the development of a means to prevent these losses.