Abstract
This article is devoted to the study of the movement of a single drop inside an air-liquid jet formed by a cup atomizer. The relevance of the research topic is proved. The problem, which has been identified, is about using modern fan sprayers for chemical protection of agricultural crops, in particular, orchards and vineyards. As for mechanical spraying, the process of movement of the droplet inside the torch, the trajectory of droplet flight, as well as the dependence of these indicators on the parameters of the rotary atomizers are currently very little studied. Therefore, this article considers the laws describing the movement of one droplet on the surface of the rotating working element and one droplet flight in atmospheric air after escape from the surface of the rotary atomizer’s cup. Research results are presented as the equations describing the dependence of the torch boundaries on the parameters of the rotary cup atomizer.
Highlights
Horticulture and viticulture occupy a significant place in modern agriculture of the Republic of Crimea and southern Russia
In order to achieve this goal, the following tasks must be solved: - analyze existing data in the field of rotary atomizers theory; - study the physical nature of the droplet formation process and motion of liquid particles on a rotating spherical surface; - determine the forces influencing the drop before and after separation from the edge of the rotating surface; - study the effect of the cup-shaped working element shape of the atomizer on the direction of the liquid particle movement
When studying the dynamical of mechanical systems with rotating elements focused on various operations of different substances, the problem arises about the interaction of moving elements and these rotating elements [2]
Summary
In these industries, according to many years of experience in fruit crops cultivation, the yield and quality of products depend to a large extent on the level of plant protection against pests and diseases. Efficiency of chemical crops treatment is determined by the following indicators: diameter of operating fluid droplets, density of protected surface coating, uniformity distribution of pesticide solution by tree crown or grape bush. Many years of experience in mechanization of chemical plants protection has shown that the optimal values above these indicators are provided by the implementation of low and ultra-low volume spraying The essence of this method is the application of a pesticide solution in the form of fine drops on the surface under treatment. In order to achieve this goal, the following tasks must be solved: - analyze existing data in the field of rotary atomizers theory; - study the physical nature of the droplet formation process and motion of liquid particles on a rotating spherical surface; - determine the forces influencing the drop before and after separation from the edge of the rotating surface; - study the effect of the cup-shaped working element shape of the atomizer on the direction of the liquid particle movement
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