Pump core flexible coupling structure

The utility model discloses a pump core flexible coupling structure, including each the pump core spare that constitutes the pump core, each pump core spare passes through connecting bolt fixed connection, connecting bolt one end is buried underground in pump core spare, and the connecting bolt other end exposes and is equipped with lock nut, the last cover of connecting bolt is equipped with belleville spring, belleville spring pressed from both sides tightly in lock nut and the nearest pump core spare of lock nut between, the biggest effective deflection of belleville spring is greater than and produces the deflection that stress made belleville spring produce in the pump working process. The utility model discloses pump core flexible coupling structure, the bolt supporting belleville spring use, forms flexible coupling, both can provide sufficient bearing capacity and be used for the dismantlement of pump core fixed, can rely on belleville spring's deformation to reduce working stress again in the pump wor