A comparative study on design standards of screw conveyors in China, Germany and the USA — Part I: Theoretical calculation and quantitative analysis--颗粒学报PARTICUOLOGY

Tan, Y., Rackl, M., Yang, W., Fottner, J., Meng, W., & Kessler, S. (2022). A comparative study on design standards of screw conveyors in China, Germany and the USA — Part I: Theoretical calculation and quantitative analysis. Particuology, 69, 61-76. https://doi.org/10.1016/j.partic.2021.11.011

A comparative study on design standards of screw conveyors in China, Germany and the USA — Part I: Theoretical calculation and quantitative analysis

Yuan Tan ^a *, Michael Rackl ^b, Weijie Yang ^c, Johannes Fottner ^a, Wenjun Meng ^c, Stephan Kessler ^a

a Technical University of Munich, Chair for Materials Handling, Material Flow, Logistics, Garching, Germany
b Ibracon – Ingenieurbüro Dr.-Ing. Rackl, Zorneding, Germany
c School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan, Shanxi, China

10.1016/j.partic.2021.11.011

Volume 69, October 2022, Pages 61-76

Received 1 September 2021, Revised 7 November 2021, Accepted 24 November 2021, Available online 7 December 2021, Version of Record 25 December 2021.

E-mail: yuan.tan@tum.de; yuan.tan880929@yahoo.de

Highlights

• First comparative study on standards of screw conveyor from China, Germany and USA.

• Case studies on representative materials are conducted to obtain quantitative results.

• Influences of experimental design parameters on power consumption are unveiled.

• Concluding comments are made in view of global integration of manufacturing of screw conveyor.

Abstract

Screw conveyors, widely used devices for transporting bulk materials, play an irreplaceable role in the modern industrial system. Despite of their traditional advantages, designers of screw conveyors still heavily rely on their own country’s experiments and standards, which are closely related to empirical data. Therefore, the same conveying task often results in different designs. This work aims to compare the design standards of screw conveyors in China, Germany and the USA. Based on related standards acquired from renowned associations in the three countries, the similarities and particularities of these design guidances are compared. With preforming the geometrical and operational designs for horizontal, slightly inclined and vertical conveyance of three representative bulk solids (barley, lignite, sand), the advantages and disadvantages of these semi-empirical designs are comprehensively presented. Furthermore, the potential influence of empirical coefficients, which are not explicitly documented, are extensively discussed. By analysing all outcomes, the compatibility and applicability of each standard are qualitatively assessed.

Graphical abstract

Keywords

Design standard; Screw conveyor; Screw feeder; Screw auger; Bulk solids

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