Compared with traditional sealed pumps, magnetic pumps have the advantages of less maintenance, no need for additional lubricating oil, no leakage, less vibration and noise. However, due to its own characteristics, it is different from traditional centrifugal pumps in many aspects, so some measures and approaches must be taken in terms of process, installation and operation to maintain its reliable and stable operation.

1. Structure: The magnetic lift pump is a horizontal non-leakage centrifugal pump with axial suction and radial discharge. The pump shaft is driven by a magnetic coupling without shaft seals.


2. Bearing: The drive shaft of the magnetic pump is supported by rolling bearings, which are lubricated by their own grease; the pump shaft is supported by hydraulic sliding bearings.


3. Magnetic coupling: The magnetic block of the magnetic lift pump is made of high-quality rare earth permanent magnets, and its maximum irreversible temperature can reach 350-400, which fully maintains the reliability of the magnetic coupling. During normal operation, the magnetic coupling operates synchronously with the three-phase asynchronous motor, and the performance is stable. In addition, the high stability of the permanent magnets prevents adverse effects when the rotor is assembled and disassembled or when the pump is operated at high transmission torques.


4. Lubrication of sliding bearings and cooling of magnetic couplings: the medium conveyed by the pump is lubricated and cooled without additional lubricating oil and cooling water system.


5. Axial force balance: During operation, the axial force of the magnetic lift pump is automatically balanced by hydraulic power, and the push plate only bears the instantaneous axial thrust when starting and stopping.


What are the measures to keep the magnetic lift pump running smoothly?

1. The inlet and outlet pipelines of the magnetic lift pump should be supported to prevent additional loads from being transmitted to the pump. The magnetic lift pump cannot be used as a stress point in the pipeline, and the pipeline system must be provided for thermal expansion. compensation measures.

2. When the positive suction head is low, the inlet pipe should be as short as possible to prevent cavitation. The inlet pipeline should have appropriate dimensions to keep the fluid flow rate not exceeding 3m/s; when transporting easily vaporized fluid or liquefied gas, keep the flow rate not exceeding 1m/s.


3. A regulating valve should be installed in the outlet pipeline to adjust the flow and head of the pump. When using a long outlet pipeline or using two magnetic lift pumps in parallel, it is recommended to install an additional one-way check valve.


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