Axial force problem in single-stage centrifugal pumps
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I would like to ask the experts: is it possible for the axial force in a single-stage centrifugal pump to act from the non-driving end (the impeller) towards the driving end (the coupling)?
Check what the structure is; if it’s a back-blade structure, the motor end points toward the inlet end, while in the rear-ring structure, the inlet end points toward the motor end； For high-power pumps, the axial force is at its maximum during start-up and shutdown; therefore, high-power pumps generally use a rear ring structure, as this directs the axial force toward the motor side, allowing the design of the rear part to balance this force. If the force were directed toward the inlet side, it would become uncontrollable
It is possible, when the diameter of the rear mouth ring is greater than that of the front mouth ring. When the inlet pressure is very high, it is also possible