Single stage cantilever centrifugal pump
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It is always seen in the data that after the single-stage cantilever centrifugal pump is assembled, the center line of the impeller flow channel and the center line of the pump body flow channel should coincide with each other, and the deviation value should not be greater than 0.5mm. If it does not meet the requirements, you can meet the requirements by adding or subtracting the thickness of the gasket between the impeller hub and the shoulder, or changing the length of the sleeve by turning. Ask the experts, I don’t understand
Those are mainly those that manufacturers need to test before leaving the factory. Users generally do not need to touch them after getting them.
Yes, I think so too, thank you friends upstairs
My understanding: For single-stage cantilever centrifugal pumps, the center line of the impeller outlet and the center line of the flow channel outlet must be aligned, which is good for improving the operating efficiency of the water pump. Of course, the manufacturer usually has adjusted it, but some pumps need to be adjusted after on-site maintenance.
I think the main purpose of center line coincidence is to reduce hydraulic losses and improve efficiency. As for adding or subtracting gaskets and turning bushings, they are all positioning methods for the fitter to adjust the axial position of the rotor impeller.
Flow channel alignment is required not only for cantilever pumps, but also for multi-stage pumps, all in order to reduce hydraulic losses.~