The application of high temperature magnetic pump in the market is no longer a new topic. Recently, there is a heated discussion about whether the high temperature magnetic pump can be magnetized in the extreme heat. High temperature magnetic pump is widely used in petroleum refining, petrochemical and chemical industry and other special oil, printing and dyeing materials etc on the working condition of high temperature medium, medium temperature should not be more than 350 degrees Celsius, overtemperature conditions can affect the operation of the pump efficiency. However, according to the experts, the magnetism of the magnetic pump will disappear at the extreme high temperature, which also reminds enterprises to pay attention to the condition of the medium when using the high temperature magnetic pump.

High temperature magnetic pump should be operated under the specified temperature condition. A platinum resistance temperature sensor can be installed on the outer surface of the magnetic pump to detect the temperature rise of the ring gap area so as to alarm or stop when the temperature exceeds the limit. High temperature magnetic pump in use should be less than 40 ℃, environment temperature motor temperature rise shall not exceed 75 ℃. Health level self-priming pump.

When the high temperature magnetic pump is running, a small amount of liquid must be used to wash the inner magnetic rotor and the friction pair of the sliding bearing. The flow rate of the coolant is usually 2-3% of the pump design flow, and the annular space between the inner magnetic rotor and the isolation sleeve is high in heat due to eddy current. When the cooling lubricant is insufficient or the flushing hole is not smooth and blocked, the working temperature of the medium temperature is higher than that of the permanent magnet, so that the internal magnetic rotor gradually loses its magnetism and the magnetic driver fails. When the medium is water or aqueous solution, can keep the rise of temperature of the annular region in 3-5 ℃; When the medium for hydrocarbon or oil, can make the rise of temperature of the annular region remain at 5-8 ℃.

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