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Why does a centrifugal pump generate centrifugal force? How to prevent axial force? After the impeller is compressed, is there still any compression volume between the mechanical seal and the impeller?
(1) As the liquid flows from the inlet to the outlet of the impeller, the direction of flow changes from axial to radial, thereby generating a reaction force on the impeller. (2) The liquid pressure on both sides of the impeller is asymmetric. Due to the action of axial forces, the impeller can be displaced, which alters the concentricity between the impeller and the overflow channel; as a result, the flow rate decreases and the head drops. In severe cases, friction occurs between the impeller and the pump casing, leading to equipment failure