Adjustable vane pump, vane angle adjustment
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For diagonal-flow or axial-flow pumps that rely on adjusting the blade angle to modify their performance, how can costs be reduced? Is it necessary to create a casting mold for each angle? Is there anyone who can solve this problem? If welding or bolt installation is used, it’s extremely difficult to find a proper reference point for fixing the blades to the hub. It’s really worrying.
It would be best to include a diagram; it’s more intuitive to understand things by looking at a picture. When viewed axially, the energy consumption is lowest for the long cross-section of the blade and highest for the parallel one.