Hazelnut processing plant with improved calibration and breaking characteristics

A hazelnut processing plant, providing a separation of an unshelled hazelnut as a shell and as a decorticated hazelnut by means of breaking the shell of the unshelled hazelnut, the hazelnut processing plant comprising:

• at least one calibration sieve where the unshelled hazelnut is transferred in order to be categorized in accordance with dimensions of the unshelled hazelnut, wherein the at least one calibration sieve is configured to filter the unshelled hazelnut from other nuts based on a calibration diameter corresponding to a size of the unshelled hazelnut;
• at least one calibration line, wherein the at least one calibration line has at least one calibration silo for each category of the unshelled hazelnut separated according to dimensions in the at least one calibration sieve;
• at least one stone where the unshelled hazelnut is transferred from the at least one calibration line in order to be separated from the shell of the unshelled hazelnut at a continuation of the at least one calibration line, wherein the at least one stone comprises a first breaking surface and a second breaking surface, wherein a distance between the first breaking surface and the second breaking surface corresponds to said calibration diameter such that the shell of the hazelnut is broken without damaging an inner part of the hazelnut;
• at least one charger sieve, wherein the at least one charger sieve is configured to separate the hazelnut broken at the at least one stone by sieving a dust of the hazelnut;
• at least one breaking line, wherein the at least one breaking line has at least one ventilator in order to provide a separation of the decorticated hazelnuts, the shells and creased hazelnuts by means of air flow at a continuation of the at least one charger sieve;
• and
• at least one sensor provided for use in a detection of a fullness of the at least one calibration silo.