Journal
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
Volume 35, Issue 6, Pages 2551-2560Publisher
KOREAN SOC MECHANICAL ENGINEERS
DOI: 10.1007/s12206-021-0526-z
Keywords
Vertical screw conveyor; Discrete element method; Average axial speed; Multivariable fitting method; Diversity structure
Categories
Funding
- National Natural Science Foundation of China [52075356]
- Shanxi Province Applied Basic Research Project [201801D221219]
- Taiyuan University of Science and Technology Research Startup Fund Project
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By establishing the conveying model of the vertical screw conveyor and the raw coal particle model, and using the discrete element method, this study calculated, simulated, and analyzed the influence of various parameters on the axial velocity of the raw coal particles. The results provide a theoretical basis for the optimization design of the vertical screw conveyor.
An incorrect formula of the average axial speed can lead to the incorrect derivation of the conveying volume formula, which in turn can produce an incorrect design of the vertical screw conveyor. In this study, the conveying model of the vertical screw conveyor and the raw coal particle model are established. Using the discrete element method, the influence of various parameters, such as the spiral speed, filling rate, pipe diameter, and pitch, on the axial velocity of the raw coal particles is calculated, simulated, and analyzed. Corresponding to the average axial velocity distribution histogram and the derivation of the particle average axial velocity formula, a theoretical basis for the optimization design of the vertical screw conveyor is provided.
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