Drum separator-grain cleaning machine OVS-355, Poltava region.

Multifunctionality is achieved due to the innovative design of the OVS-355 drum grain separator, which consists of a large number of reversing valves, screws and 2 main parts:

- cleaning and calibration unit with a drum that rotates and removes small and large impurities, and also distributesgrain into fractions depending on the installed sieves;
- the aspiration unit, which removes light pollution depending on the air flow controlled by the aspiration adjustment.

OVS-355 performs the following functions:
 - preliminarygrain cleaning without using aspiration — only a drum with sieves is used to remove small and large impurities.
- aspiration, when only light impurities are removed using the ventilation system, and the drum and sieve are not used;
-primary grain cleaning or separation - an aspiration system is used to remove light impurities and a drum with sieves for small and large impurities;
- preliminary grain cleaning - a drum separator aspiration system is used to remove light impurities and a sieve for coarse ones;
- grain sorting — after cleaning by the aspiration system from light impurities, a drum with sieves is used toseparate the grain by grades and remove small and large impurities; 
- secondary grain cleaning - an aspiration system and a drum with sieves are used to remove any impurities and damaged grains;(//tractor-service.com)
- separation and cleaning of a mixture of grains of different plants (maximum of three), which is very important for organic farming, takes place using an aspiration system and a drum with sieves; 
- grain calibration - after cleaning by the aspiration system from light impurities, a sieve is used to accurately separate the grain by size.

Advantages of OVS-355:
1. Effective grain cleaning
2. Multifunctionality and versatility
3. Accuracy of grain and seed calibration
4. Reduction of vibration
5. Quick replacement of sieves Read more: https://zsm.uaprom.net/ua/p1111618048-mnogofunktsionalnaya-zernoochistitelnaya-mashina.html
6. Flexibility of operation
7. Careful handling of grain
8. Variable slope and speed
9. Application for products that are difficult to sort