Research on the optimization of parameters of 1 mm elastic screening process with complex additional excitation

Abstract

In order to increase the vibration intensity of the screen surface and enhance the 1 mm elastic screening efficiency, a 1-mm complex additional excitation elastic screen surface was proposed. Through vibration tests, the kinematic characteristics of the complex additional excitation elastic screen surface at different operating stages are analyzed, the kinematic trajectory is reconstructed, and the influences of different parameters on the screen surface kinematic characteristics are explored. The screen surface undergoes large deformation, with the maximum average amplitude value in the x and z directions being 6.29 mm and 14.94 mm, respectively. The influences of different parameters on the elastic screening effect are assessed. With the increase of the excitation direction angle, total excitation force and excitation frequency, the screening efficiency firstly increased and then decreased. The order of significance obtained by response surface experiment is as follows: F > f > Ѱ. The actual screening efficiency was 79.47 %, and the total misplaced materials was 3.89 % under the optimal operating conditions.