Vibro separator and plan rotary separator are common wheat processing equipment used in flour mills. They are also commonly used in corn processing plants. They are the most commonly used cleaning equipment in the cleaning process to remove large and small impurities in raw materials.

The sieve surface is composed of sieve holes with certain shape and uniform distribution, and is the main working component of the screening equipment. The screen surface of most screening equipment is plan, and the screen surface of a few equipment is cylindrical.

When the raw material flows through the sieve surface, the material with a smaller particle size relative to the sieve hole can pass through the sieve hole; the material with a relatively larger particle size flows down the sieve surface, thereby finishing the screening.