Method for treating food products of vegetable origin destined to be used for extracting puree, or juice, and machine for carrying out such method

A machine for preparing vegetable pulp destined to the extraction of juice or puree, or both, from a food product of vegetable origin having a fleshy part, or mesocarp, and a central part, or endocarp, said machine comprising:

• a fixed hollow body, or stator, comprising an internal surface;
• a rotor that is interchangeable with rotors of differing sizes;
• wherein the rotor has a conical shape and is pivotally mounted about a rotation axis within said fixed hollow body, said rotor having an external surface, wherein a treatment cavity is defined between said internal surface of said stator and said external surface of said rotor, said treatment cavity comprising an inlet mouth and an outlet mouth, said inlet mouth having a size that is greater than a size of said outlet mouth;
• a motor group arranged to cause said rotor to rotate about a rotation axis;
• a pushing device arranged to feed said food product in said treatment cavity through said inlet mouth, said rotor and a push of said pushing device being configured to cause a selective crushing of said food product that does not involve the central part, or endocarp, of the food product when the food product crosses said treatment cavity;
• wherein, based on the size of the rotor, the internal surface of the stator and the external surface of the rotor are positioned at a distance greater than, or equal to, an average value of a size of the central part, or endocarp, of the food product, causing a crushing of the fleshy part of the food product, but not of the central part, or endocarp;
• and
• blocking members arranged to block said rotor with respect to said stator in a predetermined relative axial position.