The figure shows thekey structural component of the centrifugal pump - volute (Volute), which is the core 'heart' part of the pump. Its main function is toSpiral flow passageconvert the kinetic energy generated by the high-speed rotation of the impeller into pressure energy, achieving the transportation of liquids (such as pumping, circulation, etc.).

• The structure with a flange on the left isInlet(usually connected to the suction pipe), the large diameter cylinder on the right isOutlet(connecting drainage pipe); the internal cavity is used to accommodate the impeller, and the external ribs enhance structural strength.