Design and Optimization of Vibration Sieve for Specific Sandy Soil and Its Screening Motion Parameters

Zhenxing Liu, Chengzhou Fan, Yanxia Li, Shiguo Li, Yongdong Bi, Jinshuai Yang

Abstract: As an efficient and continuous screening equipment, vibrating screens are widely used in the screening process of various raw materials. However, aim at the screening of specific sandy soil, traditional vibrating screens often suffer from issues such as low screening efficiency and unstable motion performance. Therefore, this paper designs a vibrating screen specifically for sandy soil, which mainly includes a screen body, an automatically replaceable screen mesh mechanism, and a screen mesh cleaning mechanism. The vibrating screen can automatically change the screen mesh during the screening process, greatly improving the screening efficiency, and adopts a screen mesh cleaning method combining extrusion and high-pressure air knives to reduce dust volatilization. Subsequently, a screening model of the vibrating screen is established, and a sandy soil particle model is constructed using the weighted roundness method based on the discrete element overlapping particle family ODEC method. The impact of various model parameters on screening efficiency is analyzed. Based on multi-parameter orthogonal experimental analysis, the key parameters of the screening motion are optimized using the ant colony algorithm based on four-dimensional path planning, thereby improving the screening efficiency and stability of the vibrating screen.