Raw Grain Cleaning Machine
| Device features: Employing a design in which two screws rotate in opposite directions, this mechanism generates a gentle yet highly effective “kneading-and-pushing” motion. By avoiding the intense shearing forces associated with co-rotating screws, it delivers a soft, hand-like kneading action that closely mimics traditional manual washing. This ensures deep cleaning while providing critical protection for the integrity of the particles. The design features two independent, flexible water-washing stages that together form a progressive cleaning process. The first stage primarily removes surface contaminants, while the second stage focuses on tackling stubborn dirt in hard-to-reach areas such as crevices and grooves, ensuring thorough cleaning with no blind spots and significantly enhancing overall cleanliness. Through the intricate interaction among water flow, grain particles, and a flexible screw, a “multi-dimensional dynamic friction” effect is generated. This force skillfully penetrates and cleans every grain’s ventral groove and minute crevices, efficiently removing embedded fine dust, silt, insect eggs, and pesticide residues, thus achieving 360° all-around cleanliness with no dead corners. The mechanical parameters of the entire cleaning process have been meticulously calculated and optimized. The core objective is to thoroughly remove impurities while precisely preserving the natural physical structure of the raw grains. This ultimately achieves a dual-process standard of “deep cleanliness” and “intact grain integrity,” minimizing breakage rates and maximizing the preservation of the raw grains’ economic value. The cleaning technology is specifically optimized to remove common impurities in grain processing, such as fine dust, silt, insect eggs, and pesticide residues. It effectively reduces the risks of both physical and chemical contamination, enhancing product purity and food safety from the very beginning and providing high-quality, clean grains for subsequent processing stages. |
![]() |
![]() |
Counter-rotating twin-screw cleaning machine: With counter-rotating screws and a dual-flexible water-washing technology, this machine thoroughly removes fine dust, silt, insect eggs, pesticide residues, and other impurities lodged in the crevices of the abdominal grooves, while preserving the integrity of the particles. |
| Minimize weight loss (dry matter loss) Effectively maintain the freshness and edibility of grains. Inhibit the production of harmful molds such as aflatoxin. Achieve stable supply across years and seasons. |
![]() |
| Widely used in: Grains: Rice, barley, sorghum, millet, yellow millet, and more... Legumes: Soybeans, mung beans, red beans, kidney beans, broad beans, peas, and more... Oilseed crops: Rapeseed, peanuts, sunflower seeds, cottonseeds, and more... Seed grain: Seeds of all crops Other grains: Quinoa, buckwheat, and others... |
![]() |
Our service (customizing your exclusive plan):



