How Does Inline Vibratory Screening Work?

The vibration source is available in single-motor and dual-motor configurations. A vibrating motor utilizes two sets of eccentric weights (unbalanced weights) located at the upper and lower ends of its shaft to convert the motor’s rotational motion into a superposition of horizontal, vertical, and inclined forces, as well as centrifugal forces. These forces are then transmitted to the screen surface to achieve the screening process. By adjusting the phase angle and weight of the upper and lower eccentric weights, the magnitude of the excitation force and the movement trajectory of the material can be altered.

Single vs Dual Vibration Source

The single-motor design lacks an automatic discharge function; materials that do not pass quickly through the mesh are simply conveyed along the operating path to the discharge outlet, thereby completing the screening process.

The dual-motor design enables three-dimensional movement of the screen surface, enhancing screening efficiency. Thanks to the direct-discharge design at the base, screened material flows out more smoothly. Consequently, for coarse screening applications, it offers higher throughput than single-motor units of the same diameter, demonstrating exceptional performance in raw material screening, in-process screening, pre-packaging screening, and dust removal.