ECS-FM Three-Dimensional (3D) Rotary Vibratory Dry Sieving Machine, EFM3DRVDSM

A 3D Rotary Vibratory Sieving Machine (often called a Rotary Vibrating Sieve or Circular Sifter) is a high-efficiency industrial classification tool. It is designed to handle a wide range of materials, including dry powders, granules, and even liquid slurries.

The machine is powered by a vertical vibration motor with eccentric weights (unbalanced weights) positioned at both the top and bottom of the motor shaft. (1) Top Weight: Creates a horizontal circular motion, causing the material to move from the center of the screen toward the edges. (2) Bottom Weight: Creates a vertical and inclined motion, causing the particles to "jump" and tumble. (3) Resultant Motion: The combination creates a three-dimensional spiral trajectory. By adjusting the relative phase angle between the top and bottom weights, you can control exactly how long the material stays on the mesh to optimize sieving accuracy.

References:

Y. Wei, et al., Design of Vibrating Screen Separation Equipment for Powder Materials, J. Phys.: Conf. Ser., 2022, 2235, 012028

M.O. Besenhard, et al., Accuracy of micro powder dosing via a vibratory sieve–chute system, European Journal of Pharmaceutics and Biopharmaceutics, 2015, 94, 264-272