When cleaning legumes (such as soybeans, mung beans, red beans, broad beans, etc.), the gravity cleaner has significant advantages over traditional screening methods (such as manual selection and single screening) due to its unique working principle, which is specifically reflected in the following aspects:
1、Accurately separate impurities of “same size but different quality”
（1）It can effectively remove shriveled beans, worm-eaten beans, and immature beans: these impurities are close in size to normal beans, but because they are hollow or damaged inside, their specific gravity is significantly smaller. Through the synergistic effect of vibration and airflow, they will be accurately separated to the light impurity outlet.
（2）Can distinguish heavy impurities such as stones and soil: Some beans may contain small stones and hard soil, which may be the same size as beans but have a larger specific gravity. They will be separated to the heavy impurity outlet to avoid affecting subsequent processing (such as damaging equipment during pulping and oil pressing).
2、Efficiently handle various impurities and reduce process steps
The impurities in beans are complex (dust, straw debris, weed seeds, empty grains, stones, etc.). The gravity cleaner can remove multiple impurities at one time.
3、Protecting the integrity of beans and preserving their quality
（1）The “flexible separation” of vibration and airflow avoids the damage of rolling and friction screening to the beans and reduces the breakage rate.
（2）For bean seeds that need to retain germination rate, it can protect the seed coat and embryo to the maximum extent, ensuring that the subsequent germination rate is not affected.
4、Adapt to different bean varieties, strong flexibility
（1）The specific gravity and particle size of different beans vary greatly (for example, soybeans are heavier than mung beans, and broad beans are larger than red beans). The specific gravity cleaner can be flexibly adapted by adjusting parameters.
（2）By changing the vibration frequency and screen surface inclination, you can easily switch the cleaning mode for different varieties such as soybeans, mung beans, peas, etc. There is no need to replace core components, and it has strong versatility.
5、Reduce labor costs and improve scale efficiency
（1）Automatic and continuous operation, no need for manual grain selection, greatly reducing labor intensity and labor costs.
（2）The stable cleaning effect avoids subjective errors in manual screening (such as missed detection due to fatigue), ensuring the consistent quality of each batch of beans and meeting the standardized production needs of processing companies.
In summary, the gravity cleaner achieves the comprehensive advantages of high precision, high efficiency, low damage and wide adaptability in bean cleaning through the core logic of “specific gravity difference and multi-parameter adjustment”. It is an indispensable key equipment in modern bean processing.
Post time: Sep-19-2025
