I need to ask for help from all of you – what is the reason why the bearing end caps on the inlet side of multi-stage pumps break frequently? Thank you everyone!
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On the inlet side, it has broken down twice already; the balance disk is severely worn out. I couldn’t find the problem, so I have to turn to everyone for help. Thank you!
Is the balancing force not enough? What is the installation clearance for the balance disc? Is the bearing temperature at the outlet high?
What bearings are used at each end? Is the positioning correct? Has it been confirmed? How much clearance is there for the balance disc?
I also feel that my balance is not good enough, which causes the balance discs to stay pressed together and grind against each other. How do I adjust my balance? There is no problem with the positioning end; one end of the pump shaft has a fixed position.
Photos or cross-sections of the complete pump would be helpful for analysis
First, consider the axial force issue; the axial force can be calculated. The balance disk never opens and remains in a state of friction
There must be a problem with the balancing force; it’s necessary to adjust the string length and modify the shims.
The axial force isn’t balanced, so the current must increase when the pump is operating. Didn’t there be any signs when it broke down twice?
Since it is a multi-stage pump, the primary consideration is the balance of axial forces. It is recommended to check the relevant installation dimensions and the manufacturer’s installation requirements. Furthermore, it is also appropriate to doubt and verify whether there are any defects in the material itself regarding processing, manufacturing, or material selection.