A wind-screen cleaner is perfectly capable of cleaning chia seeds and is the mainstream primary cleaning equipment for them.
I. Why is it suitable for chia seeds?
Chia seeds are small (approximately 1–2 mm) and have a moderate specific gravity. The wind-screen cleaner’s dual principle of air separation + sieving perfectly matches their cleaning needs:
Air separation (removal of light impurities): Efficiently removes light impurities such as dust, straw, broken husks, empty seeds, and insect-damaged seeds from chia seeds using vertical airflow.
Sieving (removal of heavy impurities/grading): By changing the screen size to match the chia seed size (the upper layer removes larger impurities than chia seeds, and the lower layer removes fine sand and fragments smaller than chia seeds), it achieves separation of large and small impurities and seed grading.
Key Usage Points (Crucial)
Screen Selection: The screen must match the chia seed size (approximately 1.2–1.8 mm). Use a slightly larger aperture screen for the upper layer to remove larger impurities and a slightly smaller aperture screen for the lower layer to remove fine impurities, avoiding seed leakage or screen clogging.
Airflow adjustment: Chia seeds are relatively light, so the airflow should not be too high to prevent good seeds from being blown away; the airflow speed needs to be finely adjusted according to the impurities in the raw materials.
Working Principle of the Air Screen Cleaner
The core of the air screen cleaner is “air separation to remove light and heavy impurities + screening to remove impurities of different sizes,” both steps completed simultaneously in one machine and one material flow.
1. Overall Process (Single Summary):
Material enters from the top → first passes through airflow separation → then enters a multi-layer vibrating screen for screening → clean material, large impurities, small impurities, and light impurities are discharged separately, completing the cleaning process.
2. Air Separation Principle (Removal of Light Impurities, Empty Seeds, and Dust):
The fan generates a stable, adjustable vertical or inclined airflow that passes through the falling material layer.
Chia seeds and impurities have different weights and therefore different air resistance:
Light impurities (dust, broken leaves, straw, empty seeds) are blown away by the airflow and discharged into the dust collection chamber.
Plump, qualified chia seeds are heavier and fall normally, entering the next stage of screening.
The airflow is adjustable, preventing good seeds from being blown away, and is specifically designed for light and small materials such as sesame, chia seeds, and flax seeds.
3. Screening Principle (Removal of Large and Small Impurities, Grading) Material falls onto a multi-layer vibrating screen. The screen body vibrates reciprocatingly/rotatingly, causing the material to flow forward and stratify:
Upper Screen (Large Hole Screen):Impurities larger than chia seeds (pebbles, clods, straw, lumps) are blocked by the screen surface and discharged through the large impurity outlet.*Middle Screen (Working Screen):** Qualified chia seeds pass through the screen holes, becoming clean material, and flow out through the clean material outlet.
Lower Screen (Small Hole Screen): Fine sand, broken seeds, and fine soil smaller than chia seeds pass through and are discharged through the small impurity outlet.
Core of Screening: Separation by particle size.
The air-screen cleaner is highly advantageous for cleaning chia seeds and is the most commonly used and cost-effective primary cleaning equipment in the industry.
Core Advantages of Air-Screen Cleaning for Chia Seeds:
1. Simultaneous Air Screening and Screening for Extremely High Efficiency
Chia seeds are small, light, and easily carry dust and impurities. The air-screen cleaner can remove all of the following in a single pass:
Light Impurities: Dust, broken leaves, straw, shriveled seeds, insect-damaged seeds
Large Impurities: Stones, clods of soil, grass seeds, clumps
Fine Impurities: Fine sand, broken seeds
No need for multiple equipment steps, shorter process, and lower losses.
2. Particularly Effective for Small Seeds like Chia Seeds
Chia seeds are only 1-2mm in size, belonging to small oilseeds/grains. The air-screen cleaner is specifically designed for materials like sesame, rapeseed, and chia seeds. The airflow, screen angle, and vibration frequency are precisely matched, preventing screen clogging and ensuring good seeds are not blown away.
3. Stable cleaning effect, suitable for export raw material standards. Chia seeds are mostly used for export and food-grade raw materials, requiring extremely low impurities.
The air sieve can consistently reduce total impurities to a very low level, meeting the cleaning requirements of food processing and international trade.
4. High output, low cost, suitable for large-scale processing. Continuous operation, single machine processing capacity can meet the needs of production lines at the ton/hour level.
Low energy consumption. Simple operation. Easy maintenance.
5. Much cheaper than color sorters and fine sorters, an essential front-end equipment.
Does not damage the seeds, maintaining product quality. Chia seeds are valuable and cannot be broken.
The air sieve uses gentle airflow + vibrating screening, without crushing or strong friction, leaving the seeds intact and shiny after cleaning, preserving both appearance and quality.
6. High versatility, multi-purpose. By changing the screen and adjusting the airflow, it can also clean:
sesame seeds, flax seeds, rapeseed, millet, quinoa, and other small seeds.
Very cost-effective for factories engaged in the trade and processing of grains and oilseeds.
The air-screen cleaner is a versatile primary cleaning, grading, and sorting device suitable for grains, oilseeds, miscellaneous grains, seeds, and small food-grade seeds. It has a wide range of applications and is highly adaptable.
I. Grains: Wheat, barley, oats, rye; Rice, paddy rice, brown rice; Corn (small kernels/seed feed). Mainly used for dust removal, straw removal, shriveled kernel removal, and soil removal.
II. Oilseeds and Small-Grain Oil Crops: Sesame, rapeseed, sunflower seeds; Chia seeds, flax seeds, perilla seeds; Peanut kernels, rapeseed, safflower seeds. These small, light, and fine materials are where the air-screen cleaner excels and is most commonly used.
III. Miscellaneous Grains and Edible Seeds: Quinoa, millet, sorghum; Buckwheat, oat kernels; Mung beans, red beans, black beans, and other legumes (medium to small kernels). Ideal for food processing plants, grain purchasing points, and export processing.
IV. Seed Industry Various vegetable seeds, forage seeds, flower seeds Preliminary cleaning and impurity removal before selecting superior crop varieties Features: No damage to seeds, clean sorting, guaranteed germination rate.
Post time: Feb-25-2026
