If the outlet control valve of a magnetic pump fails to open, will leakage occur over time?
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As the title suggests, our company’s acid water magnetic pump is equipped with a control valve at its outlet to regulate the flow rate. If this control valve fails and stays closed, will leakage occur over time? Which place will leak first? Is there anyone who can explain this?
Prolonged overheating can cause thermal expansion of the inner magnetic sleeve, leading to dry friction with the outer magnet
Thank you for the guidance, but if it is leaked, where would it leak from first?
The magnetic pump itself has no leakage points; however, if it runs for a long time, leakage may occur from the worn areas of the inner magnetic sleeve. Our company has not encountered the situation you mentioned before; it’s just an inference on my part, but I hope it can be helpful to you
The last edit to this post was made by CHANGBAISHI on 2020-7-18 at 16:51. Setting aside the drive type of the magnetic pump, let’s focus solely on the issues related to the pump body itself. Most magnetic drive pumps are used to drive centrifugal pumps. In the case of centrifugal pumps, operating for extended periods with the outlet valve closed causes kinetic energy to be converted into heat, which accumulates within the pump and heats the fluid inside it. When the temperature reaches a certain level, it can cause changes in the gaps within the pump’s structure, leading to damage to its components. As for the leakage, it’s less important. As long as the housing is not worn through, there will be basically no leakage; P
A short-term shutdown will not cause leakage, while a long-term shutdown can damage the pump. It is recommended to add a return pipe; in the event of a fault, it should shut off, while the return pipe should stay open.
Pumps will heat up over time, and eventually cavitation will occur, causing the pump to break down
A return line also needs to be designed at the outlet of the magnetic centrifugal pump to protect it, thereby preventing the medium’s temperature from rising and causing damage to the pump.
What is the purpose of the gap left by the manufacturer between movements?