Abstract
This article takes an efficient feeding head as the research object to study its work mechanism and perform dynamics analysis of the materials in the feeding head. In addition, this article obtains the physical prototype of a three-dimensional model and the feeding surface equation through the surface data of the feeding head and investigates different unfold lines of the feeding surface. In addition, this article recommends a curve equation of the feeding head under different friction coefficients through EDEM + FLUENT simulation analysis and conducts a research on transport and feeding quantity to deduce the equation for the transport quantity of the feeding head. Finally, the verity of the preceding curve equation and transport quantity is confirmed, which has important guiding significance for the feeding head design.
Highlights
The vertical screw conveyor is mainly used for material handling
This study focuses on the relative rotary feeding head whose feeding head rotates reversely with the screw shaft
The relative error between the test and simulated values of the transport quantity are relatively small, thereby verifying the accuracy of EDEM + FLUENT simulation and verifying the validity using different guide blade surfaces recommended under different friction coefficients
Summary
The vertical screw conveyor is mainly used for material handling. This conveyor is a kind of continuous conveying equipment, which can be used to transport all kinds of powder, granule, and lump materials with high efficiency, small pollution, simple structure, and high reliability.[1,2] With the extensive application of the vertical screw conveyor, the feeding device, which is an important part of the vertical screw conveyor, is produced in various forms. With the decrease in the friction coefficient between the material and feeding head, using a small unfolded curved surface is recommended because a small friction force suffered by the material from the feeding head leads to a large material splash from the feeding window.
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