Application of a screw conveyor with axial tilt blades on a shearer drum and investigation of conveying performance based on DEM--颗粒学报PARTICUOLOGY

Sun, L., Zhang, X., Zeng, Q., Gao, K., Jiang, K., & Zhou, J. (2022). Application of a screw conveyor with axial tilt blades on a shearer drum and investigation of conveying performance based on DEM. Particuology, 61, 91-102. https://doi.org/10.1016/j.partic.2021.06.001

Application of a screw conveyor with axial tilt blades on a shearer drum and investigation of conveying performance based on DEM

Liqing Sun ^a, Xiaodi Zhang ^a, Qingliang Zeng ^{a b c}, Kuidong Gao ^{a b *}, Kao Jiang ^a, Jiawei Zhou ^{b d}

a College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
b Shandong Province Key Laboratory of Mine Mechanical Engineering, Shandong University of Science and Technology, Qingdao 266590, China
c School of Information Science and Engineering, Shandong Normal University, Jinan 250014, China
d School of Mechanical Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China

10.1016/j.partic.2021.06.001

Volume 61, February 2022, Pages 91-102

Received 18 January 2021, Revised 23 May 2021, Accepted 3 June 2021, Available online 16 June 2021, Version of Record 27 October 2021.

E-mail: gaokuidong22@163.com

Highlights

• Effect of blades axial tilt angle on conveying performance was first studied.

• Axial tilt angle had a similar effect on screw conveyor and drum.

• Positive axial tilt angle is beneficial to improve conveying performance.

• Conveying performance of conveyor changes regularly with blade axial tilt angle.

• Axial tilt angle is a priority factor in screw conveyor and drum design.

Abstract

Screw conveyors are widely employed in industrial fields for conveying bulk materials. The shearer drum which uses the screw conveying principle is responsible for excavation and conveying coal particles onto the chain conveyor. Screw conveyor performance is affected by potential factors, such as the blade axial tilt angle and style, core shaft form and diameter. The effect of blade axial tilt angle on the conveying performance was investigated with the help of DEM. In the case of the screw conveyor, the mass flow rate, and particle axial velocity increased with increasing positive axial tilt angle, and declined with increasing negative axial tilt angle. In the case of the drum, the mass flow rate, particle axial velocity, and loading rate first increased and then decreased with increasing positive axial tilt angle, and decreased with increasing negative axial tilt angle. These results can be considered as a benchmark for screw conveyor and drum structural designs with axial tilt screw blades.

Graphical abstract

Keywords

Screw conveyor; Drum; Axial tilt angle; Conveying performance; DEM

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