Process Flow of the Fresh Green-Shelled Walnut Shelling Machine
After fresh green-skinned walnuts are harvested from the branches, these walnuts, still clad in their emerald-green husks, are placed on a conveyor belt. The conveyor belt, resembling a long silver dragon, slowly transports them to their destination—the drum-type husk-removal machine. This machine is a circular device designed to apply friction. It consists of a massive cylindrical drum, whose inner walls are engineered to remove the husks from the walnuts. Once the green-skinned walnuts enter the drum, they rub against one another within the rotating chamber. As the drum spins, the walnuts continuously come into contact with and rub against the friction material lining the inner wall. This friction tears away the walnuts’ green husks. Under the force of friction, the husks gradually loosen and then peel off in pieces. This process is highly efficient and causes no damage to the kernels inside the walnuts.
The drum shelling machine is the core component of the green-shelled walnut processing line. As the drum rotates continuously, the walnuts are shelled, and the shelled walnuts are discharged from the other end of the drum, arriving at the brush washing machine. The interior of the brush washing machine is filled with soft brushes. When the walnuts enter the machine, the brushes begin to rotate. These brushes not only scrub the walnut surface thoroughly but also completely remove any remaining husk. At the same time, the machine is equipped with a spray system, where water jets from the nozzles and is evenly distributed over the walnut surface. The combination of the water flow and the brushing action ensures that dirt and residual husk on the walnut surface are thoroughly removed.
During the spray washing process, the water not only cleans the surface but also quickly rinses away the dislodged impurities, preventing them from reattaching to the walnuts. After a period of washing, the walnuts emerge spotless, revealing their naturally smooth and hard shells. These husk-free walnuts resemble meticulously polished gemstones, radiating a natural luster.
The entire husk removal and washing process is fully automated, reducing the complexity and physical strain of manual labor. Moreover, this mechanized approach not only improves operational efficiency but also ensures the quality of the walnuts. Once the husks are removed, the walnuts can proceed directly to subsequent processing steps, such as drying, grading, and packaging, thereby supplying the market with high-quality walnut products.