Sunflower Seed Double Air Screen Cleaner

Sunflower Seed Double Air Screen Cleaner from Shijiazhuang Xinlu Technology Co., Ltd.

The Sunflower Seed Double Air Screen Cleaner is a fundamental machine designed specifically for the efficient initial cleaning of sunflower seeds. Sunflower seeds, as harvested, are typically accompanied by a high percentage of impurities, including large and small plant stems, flower remnants, dirt, sand, and a significant amount of light hulls and dust. The double air screen cleaner is particularly effective for this application due to its two-stage air cleaning process, which is highly efficient at removing these light materials.

The cleaning process within the machine is sequential and comprehensive:

1. Primary Aspiration Stage: The raw, uncleaned sunflower seeds are fed onto the machine and allowed to fall in a thin, even curtain. As they fall, they pass through the first air stream generated by a powerful fan. This initial aspiration is strong and is set to remove the bulk of the lightest impurities—primarily hull fragments, dust, and very light chaff. This first step significantly reduces the load on the subsequent stages.

2. Primary Screening Stage: After the first air cleaning, the seeds are distributed evenly across the first of the vibrating screens. The screen assembly oscillates, causing the material to spread out and move across the screen surface. The top screen is usually selected with apertures larger than the sunflower seeds. This allows the seeds and smaller impurities to fall through, while larger contaminants like large stalks and clumps are carried over the screen and discharged separately.

3. Secondary Screening Stage: The material that passed through the top screen lands on the bottom screen. This screen has perforations that are smaller than the sunflower seeds. Its function is to sift out the fine impurities that have survived the first stages, such as sand, small stones, and tiny weed seeds. These fines fall through the bottom screen and are collected. The clean sunflower seeds, which are too large to pass through, travel across the bottom screen to the discharge outlet.

4. Secondary Aspiration Stage: This is the defining feature of the "double" air cleaner. After the seeds leave the screening section, they pass through a second, independently controlled air stream. This final aspiration acts as a polishing stage, removing any remaining light materials and dust that may still be adhering to the seeds or that were not fully removed in the first pass. This results in a visibly cleaner and brighter final product.

Key technical features of this cleaner for sunflower seeds include:

• High Capacity: Designed to handle the large volumes typical of sunflower seed processing.

• Interchangeable Screens: The screens can be easily changed to accommodate different sizes and varieties of sunflower seeds.

• Anti-Blinding Devices: Rubber balls or brushes located beneath the screens bounce against the mesh, preventing holes from clogging with near-size particles, which ensures consistent performance.

• Adjustable Air Flow: Both air systems have adjustable dampers or fan speeds, allowing operators to fine-tune the cleaning action for specific seed conditions.

The Sunflower Seed Double Air Screen Cleaner from Shijiazhuang Xinlu Technology Co., Ltd. is therefore an essential first step in any sunflower seed processing line, effectively preparing the seed for further conditioning steps such as hulling, grading, or sizing.