The Axial pump differs from the centrifugal pump in the direction of the water flow. In a centrifugal pump, the water is radially moved towards the casing. Here, however, the water is moved axially. That is, it is moved in a direction parallel to the axis of the impeller. The water is not radially displaced.
The impeller of the axial pump is designed like a curved propeller which pushes the water upwards.