Study on the screening performance of single-layer linear vibrating screen for sand and gravel particles

The global surge in infrastructure projects has escalated the demand for high-quality sand and gravel aggregates, creating pressing needs for enhanced screening efficiency and particle classification precision. This research develops a dynamic response model for single-layer linear vibrating screens, systematically examining how operational parameters (vibration frequency, amplitude, deck inclination, and direction angle) influence separation outcomes. We propose an innovative performance evaluation framework that simultaneously considers processing capacity and undersize particle rate, significantly advancing quantitative assessment methodologies. Our approach establishes a discrete element model encompassing both particle assemblies and screen structure, with the novel inclusion of sieve aperture spacing as a critical parameter − an aspect conventionally neglected in screening analyses. The study implements quality control zones for performance metrics and employs both isolated parameter testing and comprehensive multivariate evaluation to identify optimal operational thresholds. Experimental validation through dual-parameter variation tests confirms the model’s reliability and predictive capability.