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Because the drive shaft does not need to penetrate the pump casing, it uses the thin-walled driving torque of the magnetic field through the air gap and the isolation sleeve to drive the inner rotor, thereby eliminating the leakage channel shaft seal and realizing a complete seal.
There is overload protection when transmitting power.
In addition to the high requirements for magnetic materials and magnetic circuit design, the other technical requirements are not high.
Corrosion resistant submersible pump maintenance and repair work is very small.
Corrosion resistant submersible pump disadvantages:
Corrosion resistant submersible pump efficiency is lower than ordinary centrifugal pump.
The material and manufacturing requirements of the single-sided leakage isolation casing are very high. If the material is improperly selected or the manufacturing quality is poor, the isolation sleeve cannot withstand the friction of the inner and outer magnetic steel, and once it is disconnected, the conveyed medium will overflow.
Corrosion resistant submersible pump is limited by materials and magnetic transmission, so it is only used to transmit media below 100c and below 1.6mpa.
Since the wear resistance of spacer materials is usually poor, corrosion resistant submersible pump is usually used to transport media without solid particles.
Coupling alignment requirements are very high. If the alignment is not correct, it will cause damage to the bearing at the entrance and prevent wear of the one-sided leakage isolation sleeve.
Corrosion resistant submersible pump operation requirements:
Corrosion resistant submersible pump has no aging demagnetization phenomenon over time under normal working conditions. However, when the pump is overloaded or the operating temperature is higher than the allowable temperature of the magnet, demagnetization will occur. Therefore, the corrosion resistant submersible pump must be operated under normal operating conditions.
Corrosion resistant submersible pump is forbidden to avoid burning out the sliding bearing and isolating sleeve. The medium conveyed by corrosion resistant submersible pump is not allowed to contain ferromagnetic impurities and hard impurities. Corrosion resistant submersible pump is not allowed to run under 30% of the rated flow.
Corrosion resistant submersible pump does not require any maintenance methods, but you should always check whether the current temperature rise and outlet pressure are normal, whether the leakage operation is stable, whether the vibration and noise are normal. Under normal circumstances, it is recommended to check every 2 to 3 months. If necessary, you should check at any time and deal with the abnormal situation promptly.