Precautions for the proper use of stainless steel magnetic pumps

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Precautions for stainless steel magnetic pumps 1. Prevent particles from entering the stainless steel magnetic pump. (1) Ferromagnetic impurities and particles must not enter the magnetic drive unit and the bearing friction pairs. (2) After transporting media that are prone to crystallization or precipitation, it is necessary to rinse promptly to ensure the service life of the sliding bearings. (3) When transporting a medium containing solid particles, filtration should be performed at the inlet of the pump suction pipe. 　　2. Prevent demagnetization of stainless steel magnetic pumps (1) The magnetic torque should not be designed to be too low. (2) It should operate under specified temperature conditions; it is strictly prohibited for the temperature of the medium to exceed the allowed limits. A platinum resistance temperature sensor can be installed on the outer surface of the magnetic pump’s isolation sleeve to monitor the temperature rise in the gap area, so as to trigger an alarm or shut down the pump when the temperature exceeds the limit. 　　3. Stainless steel magnetic pumps must be protected from dry friction. (1) Idling is strictly prohibited. (2). It is strictly prohibited to evacuate the medium. (3) With the outlet valve closed, the pump shall not operate continuously for more than 2 minutes to prevent the magnetic drive from overheating and failing. Analysis of Common Faults in Stainless Steel Magnetic Pumping Systems 1. Problems caused by cavitation in magnetic pumps: The main reasons for cavitation in a pump include high resistance in the pump’s inlet pipe, a high gas content in the fluid being pumped, insufficient priming of the pump, and insufficient energy at the pump’s inlet. Cavitation poses the greatest threat to pumps; it causes severe vibration in the pump, leading to a serious disruption in its balance, which in turn can damage the pump’s bearings, rotor, or impeller. This is a common cause of failures in magnetic pumps. 　　2. Absence of a medium or low flow rate of the conveying medium: This causes dry friction between the rotor shaft and the stabilizing bearings, resulting in the destruction of those bearings. Magnetic pumps rely on the conveying medium to provide lubrication and cooling for the sliding bearings; in the absence of an inlet valve or an outlet valve, the sliding bearings suffer from high temperatures due to the lack of lubrication and cooling from the conveying medium, which leads to their damage. 　　3. Damage to the isolation sleeve: The magnetic coupling of a magnetic pump is cooled by the medium being pumped. If there are hard particles in this medium, it can easily cause scratches or punctures in the isolation sleeve; sometimes, improper maintenance methods can also lead to damage to the isolation sleeve.