White Beans Processing Line Factory

White Beans Processing Line

Shijiazhuang Xinlu Technology Co., Ltd. – Technical Overview of White Beans Processing Line

White beans, encompassing varieties such as navy beans, cannellini, and great northern beans, require a processing line that prioritizes visual perfection, uniformity, and the removal of any stained or discolored beans. The processing goal is to deliver a bright, clean, and consistent product suitable for the discerning retail and food service markets. Shijiazhuang Xinlu Technology Co., Ltd. designs lines that combine robust cleaning with high-precision electronic sorting to achieve these standards.

The initial cleaning and destoning phase addresses gross impurities. Raw white beans are fed through a series of screens to remove both oversized (clods, large stones) and undersized (sand, small pebbles) contaminants. A dedicated destoner, operating on a vibrating deck with controlled air fluidization, is highly effective for separating stones and heavy debris that are similar in size to the beans but have a higher density, protecting downstream equipment and ensuring consumer safety.

Following this, the beans undergo precision grading by size. Rotary or planar sifters with precisely sized screens sort the beans into uniform fractions. This is essential not only for visual consistency in the final package but also for ensuring even hydration and cooking times, which is critical for both retail consumers and industrial food processors.

The most crucial stage for white beans is color sorting. State-of-the-art optical sorters are employed here. These machines use high-resolution cameras and sophisticated processing software to inspect each bean individually. Beans that exhibit any deviation from the desired white color—such as yellowing, staining, dark spots, or discoloration from mildew or weathering—are accurately detected. Additionally, the sorter can be programmed to eject foreign materials (e.g., other colored beans, seeds) and physically defective beans (cracked, shriveled). The ejection system, using precise bursts of compressed air, ensures only beans meeting the strict color criteria proceed. Often, dual-sided inspection and multi-channel sorters are used for maximum defect removal.

For a premium finish, a polishing stage is often integrated. The beans pass through a gentle rotating drum polisher, typically lined with a soft, abrasive material. This process removes any residual surface dust or micro-damage to the seed coat, enhancing the beans' natural shine and resulting in a brighter, more appealing product. This step adds significant market value.

After polishing, a final aspiration and screening pass removes any dust generated during polishing and ensures no broken beans are included in the final product. The finished white beans are then automatically weighed and packaged into bags ranging from 1kg retail bags to 25kg food-service sacks. The line from Shijiazhuang Xinlu Technology Co., Ltd. is characterized by its emphasis on optical quality control and gentle handling to preserve the integrity and premium appearance of the white beans throughout the process.