Stepwise shape optimization of the surface of a vibrating screen--颗粒学报PARTICUOLOGY

Shen, G., Chen, Z., Wu, X., Li, Z., & Tong, X. (2021). Stepwise shape optimization of the surface of a vibrating screen. Particuology, 58, 26-34. https://doi.org/10.1016/j.partic.2021.01.009

Stepwise shape optimization of the surface of a vibrating screen

Guolang Shen ^{a b}, Zhiquan Chen ^b, Xiaoqiu Wu ^b, Zhanfu Li ^c, Xin Tong ^{b c *}

a School of Mechanical and Electronic Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, China
b College of Mechanical Engineering and Automation, Huaqiao University, Xiamen 361021, China
c Fujian Key Laboratory of Digital Equipment, Fujian University of Technology, Fuzhou 350118, China

10.1016/j.partic.2021.01.009

Volume 58, October 2021, Pages 26-34

Received 7 June 2020, Revised 12 January 2021, Accepted 18 January 2021, Available online 26 February 2021, Version of Record 10 March 2021.

E-mail: tongxin_hqu_fjut@163.com

Highlights

• Stepwise optimization method that strictly optimizes the screen surface shape.

• Presentation of a new curved screen having five decks.

• Inclination angles of the screen decks of −2.5°, 15°, 15°, 30°, and 45°.

• Verification of superior screening efficiency of the new curved screen by 8%–10%.

Abstract

Screening is a technique that is extensively adopted for the separation of discrete materials according to particle characteristics such as size and shape. Wide application of the discrete element method has sparked much research on the vibrating screen, which is a screening apparatus having a specific vibration mode. The shape of the screen surface is a critical factor affecting the sieving performance of the vibrating screen. In this paper, a stepwise optimization method is employed to optimize the screen surface shape of the vibrating screen in discrete element modeling to obtain a high screening efficiency and large processing capacity simultaneously. Adopting this optimization method, a new curved screen with five decks having various inclination angles is presented. Numerical simulations and prototype experiments are conducted to verify the superior sieving performance of the new curved screen. Experimental results clearly show that the new curved screen greatly outperforms three commonly used screens in terms of sieving performance. The conclusions and methodologies of this work will benefit the design and improvement of vibrating screens.

Graphical abstract

Keywords

Discrete element method; Vibrating screen; Screen surface shape; Stepwise optimization method; Sieving performance

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