How to protect the seal of a centrifugal pump during operation?
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How to protect the seal of a centrifugal pump during operation? Key points and precautions for inspecting static equipment in winter.
Generally, it still comes down to the quality of the equipment. With a good pump, as long as it is maintained regularly, there’s no need to worry about this issue; however, poor-quality pumps are more difficult to handle. It’s best to turn the pump shaft by hand before starting it, and to replace the seals regularly
Prohibiting idling is the minimum form of respect for the seal of a centrifugal pump
This has reached a moral level now: lol
This post was last edited by 156026692 on 2018-12-25 at 10:25: ensure proper pumping, carry out timely shaft rotation, and use isolation fluid for the double-end surfaces in a scientific manner
While ensuring proper lubrication of the equipment, it is necessary to fill the pump and remove air from it, so that the seal has access to lubricating fluid; only then can a liquid film be formed, ensuring the proper operation of the seal. For standby pumps, if the fluid contains water, rotating the pump or attempting to start it immediately can cause leakage in the seal. Therefore, it is crucial to keep standby equipment in good condition during winter!
If you don’t serve me, I won’t serve you; P
This guy can indeed be a bit difficult to deal with sometimes :D
Switching the water pump between operation modes is a normal practice. During periods of shutdown, some fluids and impurities can seep into the sealing surfaces; if the pump remains shut down for an extended period, these impurities can easily form scale on those surfaces. Therefore, before restarting the water pump, it is essential to turn the shaft by hand, paying attention to any stiffness in the bearings and seals. In severe cases, it needs to be disassembled for inspection. Do not start or stop it arbitrarily, as this will lead to unnecessary repairs that are even more troublesome.
When turning the pump in winter, avoid forcing it.
Try to minimize frequent starting and stopping, as such actions can cause stress on the seals leading to their failure