Discussion on some issues of magnetic pump
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During normal production, employees conducting routine inspections noticed that one magnetic pump was making abnormal noises. Upon inspection, it was found that the flow rate was low; after starting and stopping the pump several times, the flow rate increased, but a few minutes later the noise from the magnetic pump became louder again. After the machine stopped, the maintenance staff disassembled it for inspection and found a comminuted fracture of silicon carbide on the shaft. The shaft covered with silicon carbide narrows and widens. Excuse me, expert – what’s going on here? PS: Our factory’s motors do not have a current display.
If you notice that the sound is abnormal, you should check by solving the problem. Why restart it over and over again? Sounds can be categorized based on mechanical processes; if it is difficult to distinguish, then disassembly and inspection for mechanical faults must be carried out. It’s so bad that it’s difficult to find the cause. In terms of process, it is necessary to check whether the physical and chemical properties of the material exceed the operating conditions specified for the pump. These include changes in the crystallization temperature of the material, the amount of slag present in the material, whether the filter feeding into the pump is clogged, and an increase in temperature due to excessive circulation volume. There are basically no problems with the machinery; the critical damage occurred inside the pump. Mechanical damage is mostly caused by issues with the material inside the pump or by operational problems. It is recommended that in the event of unusual noises or other abnormal phenomena for which the cause of the fault cannot be determined, emergency shutdown procedures must be followed as per the operating guidelines. Repeated startups like this will inevitably lead to more dangerous accidents. For reference.
Could someone explain the difference between magnetic pump filters and centrifugal pump filters?
If cavitation occurs in the pump or dry friction takes place in the sliding bearings, the silicon carbide will break down very quickly
This situation is usually caused by a lack of material; as for whether it’s due to a clogged filter or abnormal operation of the valves in the feed pipeline, it’s up to the person asking the question to investigate further. Magnetic pumps are very delicate; a lack of fluid can easily cause the magnetic drum to overheat, leading to similar problems! If the operating conditions permit, it is recommended to use a shielded pump, as that would be better!
The inlet filter of the magnetic pump has an additional magnet to attract iron filings
There is a material shortage; when the flow rate is low, first check whether there is any blockage in the section before the pump. Triggering start/stop operations can cause excessive damage to sensitive magnetic pumps.
They are all types of centrifugal pumps; then why aren’t centrifugal pumps so delicate? ! !
The materials are a bit dirty; basically, the materials being transported belong to the category of impurities. .
Rather than saying it’s delicate, it’s more accurate to call it a \"disaster.\" Why not use it according to the pump’s requirements? “The materials are a bit dirty; basically, the materials being transported belong to the category of impurities. ”Is your pump suitable for this type of material? It is recommended to find a way through filtration; finding a solution that suits the operating conditions of the pump is the right approach. With all due respect, for your reference.