Black Bean Air Screener Grader

Black Bean Air Screener Grader

The Black Bean Air Screener Grader from Shijiazhuang Xinlu Technology Co., Ltd. is engineered to address the specific cleaning challenges of black beans and other pulses, which often contain soil residues, stone fragments, and discolored seeds. The machine integrates double air-screen cleaning with vibratory grading to achieve high-throughput processing.

Raw beans are first elevated via a bucket elevator to the primary air-screen section, where aspiration nozzles remove dust and light impurities. Dual air-screen stages ensure thorough cleaning, critical for black beans with high adherent soil content. The beans then pass through multi-layer vibrating screens (usually 4 layers) with apertures sized to eliminate larger and smaller impurities. For black beans, sieve perforations typically range from 4.0mm to 6.0mm. Gravity-assisted separation further isolates denser contaminants like stones.

The machine’s capacity reaches 3–7 tons per hour for beans, with a total power consumption of 9.9 kW. The sieves (1250×2400 mm) incorporate rubber ball cleaners to maintain unblocked meshes during operation. Cyclone dust collectors and sedimentation chambers ensure emissions comply with environmental standards.

Technical highlights include:

• Non-breakage bucket elevators preventing seed damage.

• Frequency-controlled vibration motors for adaptable processing parameters.

• High-efficiency fans providing stable airflow for consistent aspiration.

This grader is essential for pulse processing plants, food manufacturers, and export facilities. It delivers cleaned black beans with purity levels exceeding 98.5%, meeting international standards for food safety and quality.