Design and Simulation of Tunable Vibrating Screen based on Eccentric Cam

Abstract

As a commonly used screening equipment in industrial fields, vibrating screens are widely employed in petroleum, mining, pharmaceuticals, and other industries due to their high processing capacity, simple structure, and reliable operation. However, traditional vibrating screens face technical bottlenecks such as excessive vibrating mass, leading to increased demand for excitation force, higher motor energy consumption, and adverse effects on equipment lifespan. To address these issues, this paper proposes a novel vibrating screen driven by an eccentric cam mechanism, primarily composed of an eccentric cam, springs and their supports, screen mesh, and screen box. A three-dimensional model was established using Creo modeling software, and key parameters of the vibrating screen were determined. Dynamic equations for the eccentric cam were derived, and spring parameters were designed. Finite element simulation of the eccentric cam was conducted using ANSYS. Static analysis revealed a maximum stress of 34.917 MPa, significantly lower than the material’s yield strength, and a maximum deformation of 0.0017 mm, confirming compliance with strength and stiffness requirements. Modal analysis indicated that the first six natural frequencies of the structure were well below the resonance frequency of the vibrating screen, ensuring resonance avoidance.