Water pump with detachable belt pulley

The utility model discloses a water pump with a detachable belt pulley, comprising: a pump body fixedly mounted on an engine; an outer ring of the bearing is in interference fit with the pump body, one end of a center shaft of the bearing is provided with an impeller, and the other end is provided with a connecting flange; the belt pulley is assembled on the connecting flange; according to the technical scheme, the belt pulley is convenient to disassemble and assemble, when the outer diameter of the belt pulley is large and a pump body installation bolt is covered, due to the fact that a tool sleeve cannot enter, the bolt can be loosened to take down the belt pulley when the pump body installation bolt is assembled on an engine, and the belt pulley is assembled after the pump body bolt is installed; when the belt pulley of the water pump breaks, only the belt pulley needs to be replaced without replacing the whole water pump, so that the after-sales maintenance cost is reduced; when an engine or a whole vehic