the food refiner comprises a sieve , provided with an inlet for a produce to be processed and an outlet for a waste product , at a center of which a rotor extends from the inlet to the outlet and bears a plurality of spatulas which interact with an internal surface of the sieve , and a casing which surrounds the sieve and which is provided with an outlet mouth for extracted product . the spatulas can be oriented contemporaneously and with different orientations with respect to an axial direction of the rotor which , for this purpose , comprises an external jacket and an internal jacket which can , on command , translate relatively to each other so as to cause a positioning of the spatulas , made possible by a guided rotatable coupling of the spatulas in relation to the rotor .