Rotary Vibrating Screen in Wheat Cleaning
The rotary vibrating screen offers a reliable, versatile, and cost‑effective solution for wheat cleaning, contributing significantly to final flour quality and milling efficiency in both medium‑ and large‑scale plants.
The rotary vibrating screen (plane rotary sifter) is an essential cleaning device in modern flour milling, used to remove impurities from wheat before grinding. Its operation relies on a vibration motor with eccentric blocks, which generates an exciting force that drives the screen body in a horizontal plane rotary motion combined with slight vertical tossing. This unique movement spreads wheat evenly across the screen surface and moves it in a spiral path, enabling multi‑layer grading: the top deck removes large impurities (straw, stones, clods), the middle deck separates sound kernels, and the bottom deck fines (dust, broken grains, sand).
In practical application, the screen serves both primary and fine cleaning stages. It is often integrated with destoners, aspirators, and scourers to form a complete cleaning line. Key advantages include high efficiency (over 90% removal for coarse impurities and up to 98% for fine impurities), stable and low‑noise operation, easy screen replacement, low maintenance, and large processing capacity (screening area up to 5 m² or more). By changing screen mesh sizes, the same machine can handle wheat, corn, rice, and other grains. Its robust construction and self‑cleaning mechanism (using cleaning balls) reduce screen blinding, ensuring sustained performance.
Overall, the rotary vibrating screen offers a reliable, versatile, and cost‑effective solution for wheat cleaning, contributing significantly to final flour quality and milling efficiency in both medium‑ and large‑scale plants.