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Gravity Grain Cleaner Manufacture

Gravity Grain Cleaner

The Gravity Grain Cleaner by Hebei Julite Sorting Technology Co., Ltd. separates grains and seeds based on density differences, delivering refined purity for high‐value grain applications. By combining a stratifying deck with airflow control, this machine enhances product quality ahead of milling, malting, or packaging.

Gravity Separation Method

  1. Uniform Feeding System
    Grain is evenly fed onto the gravity deck via an adjustable vibratory feeder. The uniform layer ensures consistent interaction between particles and deck motion.

  2. Oscillating Deck and Inclination
    The deck oscillates at a controlled frequency and amplitude while inclined at a slight gradient. These motions cause heavier kernels to migrate down the deck, while lighter or defective kernels and debris ride the airstream upward.

  3. Under-Deck Airflow
    A blower supplies a calibrated stream of air through the perforated deck. Airflow intensity is adjusted to the specific gravity of the target grains, allowing precise separation of fractions differing by as little as 0.05 g/cm³.

  4. Fraction Collection Chutes
    Diverter plates at the deck’s discharge collect separated streams. The heavy fraction—sound kernels—exits one chute, while the light fraction—immature, broken, or chaffy material—exits another for reprocessing or removal.

Key Design Aspects

  • Modular Deck Cloths: Interchangeable deck surfaces (cloth or perforated plates) accommodate a range of grain sizes, from small oilseeds to large corn kernels.

  • Adjustable Settings: Operators fine-tune deck angle, oscillation speed, and airflow to match crop conditions and quality requirements.

  • Durable Construction: Heavy-gauge steel frames support continuous operation, while stainless-steel deck plates resist corrosion and wear.

  • Ease of Maintenance: Slide-out deck sections and tool-free fasteners allow rapid cleaning and deck replacement during product changeovers.

Operational Advantages

  • Enhanced Purity: Removes light and broken kernels, dust, and foreign seeds, improving downstream milling and product consistency.

  • Reduced Breakage: Gentle stratification and airflow minimize mechanical stress on kernels, maintaining high product integrity.

  • Energy Efficiency: Targeted airflow and precise deck motion lower energy consumption compared to full-scale aspiration systems.

Typical Use Cases

  • Wheat and Barley Malting: Produces uniform grain lots critical for even steeping and germination.

  • Rice Milling: Improves head-rice yields by discarding immature grains.

  • Oilseed Processing: Enhances purity of sunflower, canola, and sesame seeds prior to oil extraction.

Hebei Julite Sorting Technology Co., Ltd. supports each Gravity Grain Cleaner with full project management: site design consultation, installation supervision, operator training, and scheduled maintenance to uphold separation performance and product quality.


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