1. An opener (1) of bales for use in the feed line of a biomass power plant, comprising: at least two separating elements (2), each separating element (2) made with the possibility of rotation around the corresponding axis (5) of rotation and the direction of this axis of rotation (5) has a first end (3) and a second end (4), an inlet (17) for feeding bales (28) in a direction (33) for feeding to the separating elements (2), an outlet (18) for the removal of the decompressed bale material from the separating elements (2), and the drive system (6) configured to bring the separating elements (2) into rotation around their respective axis of rotation (5), characterized in that each separating element (2) is provided with a plurality of blades (8) arranged radially in the form of a mill wheel, the blades (8) extending outward from the radially inner edge (9) to the radially outer edge (10) and from the first edge (11) at the first end (3) to the second edge (12 ) by board to the second end (4), while the inlet (17) is located opposite the first end (3) of the separating elements (2) for feeding bales (28) to the processing area (34) at the first end (3) of the separating elements (2) ) .2. Bale opener according to claim 1, characterized in that the blades (8) are made in the form of flat plates. Bale opener according to claim 1, characterized in that the blades (8) are made in the form of curved plates forming a convex surface, preferably in the direction of rotation (30, 31). The bale opener according to claim 1, in which the first edges (11) of the blades (8) are provided with a plurality of recesses and / or protrusions forming a rounded processing profile for engagement with the bales and / or1. Вскрыватель (1) тюков для использования в подающей линии энергетической установки на биомассе, содержащий:по меньшей мере, два разделяющих элемента (2), причем каждый разделяющий элемент (2) выполнен с возможностью вращения вокруг соответствующей оси (5) вращения и в направл