Harvested grain doesn’t immediately become flour, cereal, alcohol, or animal feed. It first undergoes several preparatory processes.
The Importance of Cleaning
One of the primary technological steps in post-harvest grain handling is removing various impurities, such as broken kernels, weed seeds, insects, soil particles, sand, metal objects, plant fragments, and other debris. Some contaminants are harmful, like fungi, or poisonous plants such as cocklebur and darnel, as not all fields are weed-free. When these contaminants end up in animal feed or human food, they can cause significant harm.
Many impurities are removed through sieving. In the past, winnowing machines and similar devices were used for multi-stage grain cleaning. Today, specialized equipment is used to tackle various, including hard-to-remove, impurities comprehensively. One of the most reliable options is the aerodynamic grain cleaner with a cyclonic dust collector by Metra. You can order it online from our website, the official manufacturer’s platform.
Principle of grain cleaner operation
Modern cleaning mechanisms include air-sieve, drum, vibratory, and photo separators. Aerodynamic grain cleaners stand out due to their advanced design and innovative cleaning methods. These machines do not use sieves. Instead, they efficiently perform initial grain processing and sorting into several categories.
These devices can handle grains of various types, including small-seeded cereals. A significant advantage of these separators is that they eliminate the need to select sieves to match grain diameter, simplifying the harvest processing workflow. The basic operating principle of an aerodynamic grain cleaner can be outlined as follows:
- Grain enters the hopper.
- Airflow processes the grain.
- Grain is sorted by diameter.
- Light impurities are removed.
- Broken and empty kernels are rejected.
- Chaff and other debris are sieved out.
Advantages of This Method
If you decide to purchase an aerodynamic grain cleaner with a cyclonic dust collector from the Metra catalog, you’ll appreciate its benefits. For example, the sieving speed is optimally calibrated to keep grains intact. This is further supported by the rubber lining in the separation chamber, enhancing the grain’s quality as a food industry raw material and as seed stock. The germination rate of grains prepared this way reaches 98%. The separator is suitable for processing seeds of cereals, grasses, oil crops, and fodder plants. Switching to a new type of grain takes just five minutes of preparation. Moreover:
- There’s no need to select sieves by grain diameter.
- Cleaning can often be completed in a single cycle.
- Grain is sorted according to its specific weight.
- The machine is suitable for small-seeded crops.
All dust and debris are expelled into a special container via an air stream, eliminating the need for post-operation cleanup. The device operates almost noiselessly and consumes a third less electricity than other similar devices.
We recommend purchasing Metra grain cleaners for sale with cyclonic dust collectors at an affordable price, complete with a factory warranty of up to 3 years. If necessary, we provide warranty replacement of parts. In fact, with proper use, such a separator can reliably serve for over 30 years. To ensure this, we offer maintenance services for the equipment you purchase from us, along with staff training and consultation support.
