Selection of centrifugal pump seals?
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One of the pumps in our company has a seal that leaks frequently. We have tried many solutions, such as changing the seal to an embedded type (so that the seal fluid flows into the pipeline)； The sealant fluid flows outside directly after passing through the mechanical seal, but this doesn’t have any noticeable effect. It’s a liquid resulting from the reaction between acetic acid and cobalt carbonate; please help think of a solution.
I would recommend that you contact the manufacturer to have the seal replaced, or to switch to a shielded pump or a magnetic pump – this will completely resolve the problem
1. The material issue of the mechanical seal. 2. The coaxiality issue of the pump shaft. 3 is the issue related to the installation of the mechanical seal. It depends on the actual situation to determine.
Attention should be paid to the proper use and maintenance of mechanical seals, especially regarding the start-up and shutdown operations of the equipment as well as the control of its operating conditions.
I’ve studied it; this problem is really troublesome
Can a packing seal be used, with the pump shaft made of corrosion-resistant material? This would facilitate maintenance and replacement.
Fluorinated magnetic pumps should be able to solve this problem; as long as there are no particles, the materials of the bearings and spindle inside the magnetic pump can be replaced.
Good, it supports the use of shielded pumps when the process conditions are suitable.
The poster said the liquid is “a liquid resulting from the reaction between acetic acid and cobalt carbonate.” I think it’s best to avoid any leakage of this substance; using fillers for sealing it isn’t a good idea, right?
This post was last edited by lyshbz on 2010-3-27 at 15:27. I don’t understand what purpose this pump serves What is a medium? What are the temperature and pressure? What is its position in terms of manufacturing process? What is the current situation regarding leaks? There are many reasons for leaks, but it’s not possible to generalize; each case must be analyzed on its own.
It is estimated that the medium is somewhat corrosive; it is recommended to try using a bellows seal!