The Planar Rotary Sieve is a high-capacity grain cleaning machine designed to remove large and fine impurities from paddy before milling. Widely used in rice mill plants and grain processing facilities, it improves cleaning efficiency, protects downstream equipment, reduces maintenance costs, and enhances overall rice processing performance.
The Planar Rotary Sieve is a high-capacity grain cleaning machine designed to remove large impurities, coarse contaminants, and foreign materials from paddy rice before processing.
As one of the most important pre-cleaning machines in a rice mill plant, it protects downstream equipment such as destoners, huskers, separators, whiteners, and polishers while improving overall processing efficiency.
With its large screening area, smooth rotary motion, and reliable performance, the Planar Rotary Sieve is widely used in rice mills, grain storage facilities, flour mills, feed plants, and seed processing factories.
Make a Quick Inquiry Now !Freshly harvested paddy often contains various impurities, including:
• Straw
• Rice stalks
• Leaves
• Rope fibers
• Stones
• Plastic fragments
• Dust
• Large foreign materials
If these impurities enter the processing line directly, they can:
• Damage milling equipment
• Increase maintenance costs
• Reduce milling efficiency
• Lower rice quality
• Increase broken rice rate
An efficient pre-cleaning system is therefore the foundation of every successful rice milling operation.
The machine adopts a horizontal reciprocating rotary screening structure.
Raw Paddy → Feeding Section → Upper Screen → Lower Screen → Clean Paddy Discharge
The cleaning process operates as follows:
• Raw paddy enters the screening chamber.
• Large impurities are retained on the upper screen and discharged separately.
• Fine impurities pass through the lower screen.
• Clean paddy is discharged for further processing.
The rotary movement ensures smooth material flow and high screening efficiency while minimizing grain loss.
Large screening surfaces provide excellent impurity removal performance.
Suitable for rice mill plants ranging from 30T/D to 500T/D and beyond.
Optimized screen design minimizes the loss of valuable paddy during cleaning.
Balanced drive mechanism ensures low vibration and reliable long-term operation.
Quick-access maintenance doors simplify screen inspection and replacement.
Low power consumption helps reduce operating costs.
Removing large impurities reduces wear and extends the lifespan of expensive machinery.
Cleaner paddy leads to better husking, whitening, polishing, and sorting performance.
A stable cleaning process allows the entire production line to operate more efficiently.
Less contamination means fewer equipment failures and lower maintenance expenses.
The machine is widely used for:
Pre-cleaning of paddy before destoning and husking.
Removal of foreign materials before storage.
Cleaning wheat and other cereals.
Removing impurities from feed ingredients.
Cleaning and grading agricultural seeds.
The Planar Rotary Sieve is usually installed at the beginning of the production line:
Paddy Receiving → Planar Rotary Sieve → Destoner → Paddy Husker → Paddy Separator → Rice Whitener → Rice Polisher → Color Sorter → Rice Grader → Packaging
This arrangement ensures only clean paddy enters the milling process.
The machine effectively removes straw, leaves, ropes, large foreign materials, oversized particles, and fine impurities.
Yes. Different screen hole sizes can be selected according to the type of grain being processed.
Yes. It can process wheat, corn, soybean, millet, sorghum, and various seeds.
Multiple models are available to match small, medium, and large-scale grain processing facilities.
Co-Grain provides complete rice processing solutions, including:
• Rice milling equipment
• Paddy cleaning systems
• Grain drying systems
• Steel silo projects
• Automatic packaging systems
• 3D factory layout design
• Installation and commissioning
• Technical training
• Spare parts support
• Turnkey rice mill projects
Our engineering team helps customers achieve higher productivity, better rice quality, and lower operating costs.
The Planar Rotary Sieve is an essential cleaning machine for modern rice milling plants. By efficiently removing impurities before processing, it protects valuable equipment, improves rice quality, and increases overall plant efficiency.
Whether building a new rice mill or upgrading an existing facility, investing in a high-performance Planar Rotary Sieve is a smart choice for long-term operational success.
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