The advantages and disadvantages of magnetic pumps and operating requirements

The advantages of a magnetic pump 1, because the drive shaft does not need to penetrate the pump housing, but the use of magnetic field through the air gap and isolation sets of thin-walled transmission torque, driven by the rotor, thus fundamentally eliminating the shaft seal leakage channel to achieve Completely sealed. 2, there is overload protection when power transmission. 3, in addition to magnetic materials and magnetic circuit design have higher requirements, the remaining part of the technical requirements are not high. 4, magnetic pump maintenance and repair workload is small. The disadvantage of two magnetic pumps 1 magnetic pump efficiency than ordinary centrifugal pump low. 2, on the prevention of single-sided leakage of materials and manufacturing requirements set higher. Such as improper choice of materials or manufacturing quality is poor, the isolation sleeve can not withstand the friction between the inner and outer magnets is easy to wear, and once broken, the media will be spilled. 3, due to the magnetic material pump and magnetic drive restrictions, so generally only for domestic delivery of 100 ℃ below, 1.6Mpa the following media. 4, the isolation sleeve material wear resistance is generally poor, so the magnetic pump is generally used for conveying medium without solid particles. 5, the coupling requirements of the high, right in the wrong, it will lead to the import of bearing damage and anti-single-sided leakage isolation sleeve wear. Third, the operating requirements of the magnetic pump 1, magnetic pump in normal operating conditions, there is no aging demagnetization over time. However, when the pump overload, stalling or operating temperature above the allowable temperature of magnet will demagnetization. The magnetic pump must therefore be operated under normal operating conditions. 2, the magnetic pump taboo empty run, in order to avoid the burning of the sliding bearing and isolation sleeve Magnetic pump is not allowed to contain the medium of ferromagnetic impurities and hard impurities. Magnetic pumps are not allowed to operate at less than 30% of rated flow. 3, the magnetic pump does not require any method of maintenance, but should always check the current, temperature and outlet pressure is normal, whether leakage operation, is stable, vibration and noise are normal. Under normal circumstances it is recommended to check 2 to 3 months. When necessary, should be checked at any time, found that anomalies in a timely manner.

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