How to solve the problem of high temperature heating of magnetic pump?

　　For chemical enterprises, magnetic pumps are just needed to transport chemical liquid equipment, but in the face of prolonged operation, magnetic pump failure is a common thing, many users are deeply troubled by its failure, especially in the operation of the project temperature is too high, but also let a lot of users do not know what to do.

　　How to solve the problem of high temperature heating magnetic pump

　　We use the magnetic pump when the pump heat, in fact, part of the bearing heat, part of the pump body heat, part of the magnetic pump motor heat, motor as a magnetic pump power source, we still need to pay attention to the relevant issues to deal with, the general motor voltage exceeds the rated voltage, the motor winding wiring is wrong, the motor out of phase operation, etc. will lead to the motor heating, the motor temperature in the When the motor temperature situation is dealt with is timely shut down the motor, and then in the cooling before overhauling.

　　Reasons for high temperature of magnetic pump

　　1. Poor assembly quality of magnetic pump

　　Some parts have friction phenomenon, or the magnetic pump motor and pump shaft balance is not good centrifugal, will also make the magnetic pump motor heating phenomenon.

　　Solution: Check the assembly quality of the magnetic pump and correct it after reassembly.

　　2. When installing and replacing the mechanical seal of the magnetic pump, the pressure of the spring is adjusted too tightly, so that the manual disk drive can not rotate flexibly.

　　Solution: Re-adjust the compression of the spring.

　　3. The specific gravity of the conveyed liquid medium is too large.

　　Solution: Increase the motor power of the magnetic pump can solve the heating problem of the magnetic pump, if the temperature of the transported media is high and run for a long time, the temperature of the pump medium will be transferred to the motor, which is also the cause of heating, pumping the media temperature is high, it is recommended that the use of magnetic pumps with couplings products, pumping the liquid contains particles and debris it is recommended that the use of self-priming non-clogging sewage pumps, the pumping of the liquid medium is Hot water is recommended to use self-priming centrifugal pump products.

　　4. The voltage at the site is unstable or the cable of the magnetic pump motor is not up to standard.

　　Solution: Stabilize the voltage with voltage regulator or replace the standard cable.

　　5. Incorrect selection of magnetic pump causes

　　For example, the actual working head needs 15 meters of magnetic pump to meet the requirements of the working conditions. Some customers in the choice to buy magnetic pump products, to the pump manufacturer to put forward the requirements of magnetic pump head to reach about 30 meters, resulting in magnetic pump installation and use of the phenomenon of motor heating, the main reason is that the actual conveying head than the design head of the magnetic pump is much lower than the magnetic pump, so that the magnetic pump outlet flow increases resulting in the rise of the motor current, which in turn appeared in the phenomenon of the magnetic pump motor heating, the situation is serious, the motor will be burned out! In serious cases, the motor will burn out.

　　Solution: Close the export valve to control the flow of the magnetic pump to reduce the role of the current, if the difference in head is very small valve can not be solved, only the replacement of low head magnetic pump products.

　　Magnetic pump motor temperature is too high how to deal with

　　A, motor start too often, use the environment temperature is too high, poor ventilation, etc. will also lead to high motor temperature, reduce the number of starts, reduce the ambient temperature, ensure that the air ducts are clear, eliminate the accumulation of dust and oil, keep the fan running well can help solve similar overheating problems.

　　B. Excessive load on the motor is also the cause of overheating, reducing the load or replacing the motor with a higher power can solve the overheating problem.

　　C. When the bearings of the motor are worn out seriously, it will produce large friction and generate heat, the solution is to check whether the bearings are loose and whether the stator and rotor are poorly matched.

　　D. Cage rotor of the motor with broken bars or loose coil joints of the wire-wound rotor will lead to increased current and heat up, the solution is to butt weld the rotor or replace it.

　　E, the stator winding of the motor turn to turn or phase to phase short circuit or grounding, such a situation will lead to an increase in the motor current and produce temperature rise, the solution is to add insulation to the center or directly replace the winding.

　　F, motor winding wiring errors, making the rated load running motor overheating phenomenon, the solution is to correct the winding line wiring errors.

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　　G, the motor's power switch contact problems and one-phase fuse breakage can cause phase loss operation, resulting in higher motor temperature, the solution is to repair or replace the damaged parts.

　　H, the motor's three-phase power supply voltage imbalance will also cause motor heating, this is because when the three-phase power supply voltage imbalance exceeds 5% will cause three-phase current imbalance, the way to deal with the problem is to check and adjust the voltage.

　　I. The instantaneous voltage of the motor exceeds the rated voltage by more than 10%, or the motorized