Reasons for the breakage of impeller blades in liquid ring vacuum pumps
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Please have the experts analyze the cause of the failure; this is the rotor of the vacuum pump at the top of the pressure reduction tower, and it’s already the third rotor to fail
It was 304 before, and then a new one was bought that is 316L
Working medium? Temperature? Weld quality?
Cavitation: During normal operation, the sound associated with cavitation should be quite loud; it is necessary to reduce cavitation either by taking measures to address it or by replacing the impeller regularly
This post was last edited by symc on 2019-9-1 22:16. Stress… stop buying products from this manufacturer; you must have purchased them at a very low price from them. There’s always a reason why something is expensive… So, buy an impeller from NASH. Does it contain hydrogen?
Install a sight glass on the outlet pipeline to check the water flow
It’s a shoddy product; such an impeller should be cast as a single piece – it’s unlikely that it would be made by welding together various parts.
It’s not easy to cast impellers of such large size using 316L; the quality is even worse