The dynamic analysis of the inertial vibrating screens modeled as 3DOF elastic systems

Résumé

The paper proposes an approach of a 3DOF (3 Degree Of Freedom) dynamic model for the vibrating screens, with the purpose of determining some impartial criteria for the appreciation of dynamic characteristics of the equipment. The level of specific performances of the screens is based on technological parameters of the inertial vibrating screen (frequency, disturbing force, amplitude of the screen vibration) and on the degree of uniformity of the transmission of vibration across the screen surfaces. The quality of the screening operation is much better if the vibrations are transmitted uniformly over the entire screen surface. This is why the translation vibrations must be predominant rotation vibrations, in the case of rotating inertial force. These technological requirements can be achieved after the dynamic analysis of the equipment sets up the corresponding correlation of the structural and functional parameters.