Machine for grinding food

A machine for grinding food, comprising a section for loading the food to be ground and a discharge duct for the ground food;

• the discharge duct having an axis thereof that extends longitudinally and an outlet for the ground food;
• said outlet being closed by a perforated plate, which is part of a kit of interchangeable plates which comprises at least a first type, having a first type of perforation, and a second type, having a second type of perforation;
• locking means being provided for keeping the perforated plate fixed on the outlet;
• said locking means comprising at least one axial coupling for locking the perforated plate in rotation, and an annular cap that is facing toward the perforated plate and fixed on the outlet in order to retain the perforated plate in the direction of said axis;
• wherein said axial coupling is defined by at least two parts, of which a first part is arranged on the outlet of the discharge duct and a second part is arranged on an interchangeable element interposed between the perforated plate and the annular cap;
• said interchangeable element being part of a safety kit that comprises at least two mutually different interchangeable elements, of which a first interchangeable element is compatible both with the plates of the first type and with the plates of the second type, and has an integrated protection body that is adapted to prevent cutting accidents from happening to the operator, while the second interchangeable element is compatible exclusively with the plates of the second type and lacks said protection body.