Briefly describe the structural features, performance parameters, advantages, and range of applicable materials for air screen cleaner.

II. Structural Features

The air screen cleaner features an integrated, enclosed frame with a compact design. Its core components include:

1. Feeding and Distribution System: The feed inlet is equipped with a distribution hopper and a flow-regulation mechanism, ensuring that material is spread evenly across the width of the screen surface. This prevents material accumulation or uneven flow, which is essential for achieving high purity and high processing capacity.

2. Air-Separation System: Comprising a high-pressure fan, air ducts, a settling chamber (or cyclone dust collector), and an airflow control valve. The airflow can be adjusted during operation to accommodate the specific characteristics of different crop seeds and their associated impurities. The settling system utilizes either a bag-type dust collector or a cyclone collector to prevent dust leakage into the workspace, ensuring compliance with environmental standards.

3. Vibrating Screen Assembly: Driven by a vibrating motor or an eccentric drive mechanism, the screen assembly undergoes reciprocating or circular motion. It can be configured with multiple layers (typically 3 to 5), with aperture sizes selected based on specific cleaning requirements. The screen surfaces are designed for quick and easy replacement.

4. Specific-Gravity Separation Channel: Leveraging the combined effects of airflow and vibration, heavy impurities—such as stones, clods of soil, and metal fragments—are separated along a gravity-grading deck and discharged through a dedicated outlet, preventing them from contaminating the final product.

5. Discharge and Collection System: Separate outlets are provided for the finished product, as well as for large, medium, light, and heavy impurities. The system can be integrated with dust-extraction ductwork and conveying equipment to form a complete processing line.

The entire machine is constructed from welded steel plates and finished with a powder-coated, anti-rust treatment. The screen assembly has been engineered for optimal sealing, structural rigidity, and vibration dampening, keeping noise and vibration levels within acceptable limits. Maintenance points are centrally located, and the unit is designed for easy disassembly and assembly, supporting long-term, continuous operation.

III. Performance Parameters (Customizable based on material)

- Processing Capacity: Typically 3–10 t/h (depending on screen width and material). A range of models is available to meet high-throughput requirements for various applications, from precision seed cleaning to the processing of rice, beans, wheat, and corn.

- Purity: Achieves a final product purity of over 99.5% in a single pass, meeting the standards required for commercial grain or seed use.

- Impurity Removal Efficiency: Industry-leading removal rates for light, medium, and small impurities; large impurities are almost entirely removed.

- Airflow: Adjustable; air pressure and volume are matched to the bulk density of the material.

- Screen Layers and Aperture Sizes: Configurable with 3–5 layers; aperture sizes are customized based on the material's particle size. (Screen apertures are selected according to the primary material's particle size—typically 1/3 to 1/2 of the smallest particle dimension—with a graduated arrangement for large, medium, and small impurities.)

- Power Consumption: Total power (fan plus vibration motor) varies by model—generally ranging from a few kilowatts to over ten kilowatts—ensuring energy-efficient operation.

- Adjustable Operating Parameters: Feed rate, airflow/air pressure, vibration frequency and amplitude, and screen inclination angle are all adjustable to accommodate different types of crops.

- Footprint and Installation: The unit features a modular design and can be installed on a flat foundation; it is easily integrated into complete grain-cleaning production lines.

IV. Core Advantages

First, integrated processing for single-pass efficiency and high purity. By combining air-based separation (aspiration) with mechanical screening, the system removes light, heavy, and variously sized impurities in a single pass. It achieves a final product purity of up to 99.5%. This eliminates the need for multiple machines in series, resulting in a smaller footprint, lower energy consumption, and reduced labor requirements.

Second, flexible adjustment and high adaptability. Parameters such as airflow, vibration amplitude, screen inclination, and feed rate can be adjusted during operation. A single unit can handle a wide variety of materials—including wheat, rice, corn, legumes, sesame, rapeseed, sorghum, chia seeds, and pumpkin seeds—by simply swapping out the screens to accommodate different products or desired purity levels. This makes it ideal for processing facilities that handle diverse crop varieties and specifications.

Third, stable operation, easy maintenance, and long service life. The equipment features a robust, dust-sealed structure and a reliable vibration mechanism. Wear parts, such as screens, are easy to remove and replace. Backed by a mature manufacturing system, the equipment ensures long-term, continuous, and stable operation with minimal downtime for maintenance, thereby safeguarding the productivity of the entire processing line.

V. Applicable Materials

The air-screen cleaner is a versatile piece of equipment suitable for the primary cleaning and precision sorting of a vast range of grains, seeds, and granular agricultural products. Typical materials include:

- Grains: Wheat, barley, oats, rice, corn, sorghum, paddy, rye, etc.

- Legumes: Soybeans, mung beans, peas, pinto beans, white kidney beans, red kidney beans, chickpeas, etc.

- Oilseeds/Seeds: Sesame, rapeseed, sunflower seeds, peanuts, chia seeds, flaxseeds, etc.

- Specialty Crops: Pumpkin seeds (pre-cleaning before washing), coffee beans (cleaning before or after dehulling), cocoa beans, cottonseed, etc. By replacing screen surfaces and adjusting airflow, the equipment can accommodate variations in material particle size, bulk density, and impurity composition; it is used for seed processing, grain storage, food processing, pre-treatment for oil extraction, and the standardized cleaning of commercial grain intended for export.