Vibrating Screens

 Vibrating Screens

    Screening operations are an important part of coal processing. The vibrating screen is one of the most extensively used screening tools. Vibrating screens, such as linear vibrating screen, circular vibrating screen or elliptical vibrating screen, have a simple translational motion. The motion follows the same path everywhere on the screen and so the screen has constant transport velocity and throwing index, which leads to low screening efficiency. Augmenting the throwing index to improve the processing capacity breaks the exciting motors or lowers the working intensity. In this paper, we report on the design of a new vibrating screen with variable motion traces that is based on the principle of screening process with . Different parts of the constant bed thickness vibrating screen traverse different elliptical traces and the resulting motion agrees well with the ideal motion.Thus the screen processing capacity and efficiency can both be improved.