Multi-groove belt pulley

The utility model relates to the technical field of belt wheels, in particular to a multi-groove belt wheel which comprises a wheel core, a plurality of wheel groove pieces are arranged on the outer ring face of the wheel core at intervals, blocking pieces are arranged between the wheel groove pieces, and the wheel groove pieces and the blocking pieces are connected with the wheel core through flat keys. Side baffles are installed on the two sides of the wheel core, and the wheel groove piece and the blocking piece are clamped between the two side baffles. According to the utility model, the wheel core and the wheel groove sheets are connected in an assembled manner, so that the wheel groove sheets with proper groove angles can be selected according to V belts with different sizes; the wheel groove pieces are easy to disassemble, after the wheel grooves are abraded, the whole multi-groove belt wheel does not need to be replaced, only the abraded wheel groove pieces need to be replaced, and maintenance cost is