Pump issues
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Our company currently has 30 pumps, and their mechanical seals keep leaking. Upon inspection, there are no problems with the rotating and stationary rings or the O-rings; reassembling them resolves the issue. The mechanical seals in question are of type 108-35. During maintenance, it was found that material crystals form on the seals when the pump stops running. Experts, should insulation be added to the pump cover, or should a modular double-end face seal be used?
Double-end face mechanical seals are better for material crystallization; this should have been taken into consideration when selecting and supplying the equipment.
Thank you; your advice is excellent. If the mechanical seal leaks, it will contaminate our entire water circulation system. Is there any other solution?
Check whether the materials are clean, perform dynamic balancing on the shaft, and pay attention to proper operation in daily use
First, it is necessary to determine the reason for crystallization – whether this pump is suitable for this type of medium. Furthermore, the physicochemical properties of this medium must be clearly defined.
Improvements to the sealing of crystallization medium pumps https://wenku.baidu.com/view/9893a6134431b90d6c85c78e.html
Based on the material properties, select an appropriate pump again.
The mechanical seal selection is not suitable for the operating conditions. If there is space in the sealing chamber, it can be modified to use modular springs that remain stationary and are isolated from the medium, which will certainly extend the service life of the mechanical seal
I’d like to recommend a manufacturer to you: Shanghai Denai Pump Industry. This company holds several patented technologies that might be useful to you.