Paddy Seed Processing Line

Paddy Seed Processing Line

Shijiazhuang Xinlu Technology Co., Ltd. – Specialized Paddy Seed Processing Line for High Germination Rates

A Paddy Seed Processing Line is specifically engineered to handle rough rice (paddy) intended for use as seed. The primary objective of this line is not just to achieve visual cleanliness, but to preserve and enhance the seed's physiological quality—its viability and germination potential. This requires a process that is notably gentler and more precise than a standard rice milling line for consumption. Shijiazhuang Xinlu Technology Co., Ltd. designs these lines with a focus on minimizing mechanical stress and heat generation, which are detrimental to seed embryo health.

The process begins with reception and pre-cleaning. The incoming paddy is passed through a pre-cleaner, often a rotary drum screen or a vibrating screen with aspiration, to remove large and fine impurities like straw, empty panicles, and dust. This initial step prevents these contaminants from interfering with subsequent precision machinery and reduces the overall load on the line.

The heart of a seed processing line is the primary cleaning and grading stage. Here, multi-level air-screen cleaners are used. The aspiration systems are carefully tuned to remove lightweight, immature seeds which have low density and poor germination capacity. The screening section employs sieves with oblong slots to meticulously remove both oversized and undersized materials, including small stones and weed seeds that are similar in weight to paddy. This step is crucial for obtaining a seed lot with uniform size and high physical purity.

A gravity separator is an indispensable component in a seed line. Even after sizing, the paddy lot contains mature, dense seeds (high germination potential) and less dense, partially filled or damaged seeds (low germination potential). The gravity separator fluidizes the seed bed with air and vibration, causing the high-density, healthy seeds to settle and report to one outlet, while the low-density, inferior seeds float to the top and are removed. This upgrading step directly correlates to achieving a higher field emergence rate.

For paddy seed, the husk is intentionally left on, as it provides a protective layer for the embryo. Therefore, husking and whitening are completely omitted. Instead, the line may include a treater and dryer. Seed treatment involves the application of fungicides, insecticides, or biologicals to protect the seed from soil-borne diseases and pests after sowing. Precision treaters ensure a uniform coating on each seed. If the treatment is liquid-based, a subsequent low-temperature dryer may be integrated to reduce moisture back to a safe level for storage, preventing the seeds from sticking together or initiating premature germination.

The final stages are weighing and packaging. Treated seeds are weighed using accurate scales and packed into specific seed bags. These bags are often made from breathable materials and are labeled with essential information such as variety, lot number, germination percentage, and treatment details. The entire line from Shijiazhuang Xinlu Technology Co., Ltd. is designed for traceability, allowing seed processors to maintain the identity of different varieties from intake to bagging. By prioritizing seed health at every stage, this specialized processing line ensures that farmers receive a high-quality, high-germination product that forms the foundation of a successful crop.