The structure of a variety walnut allows you to obtain a whole kernel, usually, a variety walnut has a thin shell and a kernel that is freely located in the walnut shell and does not grow with partitions or shells.
To process such a walnut, you need equipment that will crack the shell and not damage the kernel. The equipment should not only carefully crack the walnut but also sort it with minimal damage.
The most careful nutcrackers in the world are nutcrackers of the conical crack type. The principle of their operation is that the walnut is lowered into plates that have the shape of a cone.
The walnut is retained in the slabs at a height corresponding to its size, the slabs are compressed by a few millimeters, the nutshell is cracked around the entire perimeter and the nut is unloaded into a container for unloading.
The industrial conical nutcracker ensures the output of the whole kernel up to 80%, provided that it is a high-quality graded walnut with optimal moisture.
For sorting, the crack walnut is moved to a vibrating sieve with aspiration. The machine sorts cracked walnuts into fractions of ½, ¼, 1/8, and partially crack walnuts. At the same time, each particle passes through an aspiration system that separates the shell and partitions from the kernel.
The sorted kernel is sent for visual quality control. The personnel selects excess particles at the inspection table, leaving the selected product.
To automate production and reduce the number of workers, the walnut processing line is equipped with conveyors for moving walnuts. Also, for a low-quality walnut or a walnut that the nutcracker cannot handle, a walnut breaker machine is used after the walnut cracking machine.
Such a set ensures careful processing of the walnut with the maximum number of whole kernels.
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