Cohesive product flow through conveying screw surface with overlapping elastic sections

Abstract

Despite the considerable amount of research related to determining optimal parameters of screw operation, the problem of reducing the damage to grain materials during their transportation by screw working bodies is not completely solved. Significant reduction of damage to agricultural production materials can be achieved by applying elastic interaction of elements working surfaces of the product transportation options, which minimize damage to them but at the same time, provide the necessary performance o f the process and minimize energy costs. To solve problems related to damage to agricultural production materials, a new design of a screw with a sectional elastic screw surface has been developed. The influence of constructive, technological and kinematic parameters on the nature of the movement of the ear of bulk material flow has been theoretically substantiated. Therefore, based on the analysis, the rational parameters of working bodies and operating modes of the screw working body can be determined. The article presents a new conveying screw model with a sectional elastic surface designed to reduce the damage degree to grains during transportation. The work carries out the theoretical calculation of grains interaction with the screw elastic surface, which sections are installed with overlapping edges, in order to ensure the guaranteed flow into a loading zone. The influence of various factors on the time and the path offree movement of material particles to the contact with the next section is established, as well as the impossibility of grains to interact with a nonoperating surface of the screw working part, which can lead to seeds damage.