Magnetic pump is a kind of non-leakage pump equipment commonly used in the chemical industry, which is widely used in petroleum, chemical, pharmaceutical, metallurgy, electric power, textile, security and other departments. The advantage of chemical magnetic pump is that it is pollution-free and environmentally friendly, which can solve the leakage problem of traditional pump in the process of transferring solution, and save energy for enterprises. This paper mainly introduces the shutdown steps of chemical magnetic pump, and the problems that need attention during the shutdown process.

First, magnetic pump shutdown steps

1. Check the running state of the pump

Before stopping the chemical magnetic pump, it should first observe its operating state to ensure that the pump operates in normal condition. If abnormal conditions are found, such as serious vibration and noise generated by the pump, the cause should be investigated in time and appropriate measures should be taken to repair it.

2. Close the outlet valve

After determining the normal operation of the magnetic pump, the outlet valve should be turned off first to avoid damage caused by pressure fluctuations after stopping the pump. Note that when closing the valve, it should be slowly closed to avoid a large impact on the pump body.

3, stop the pump operation

After closing the outlet valve, the operation of the magnetic pump can be stopped. In this process, if the magnetic pump needs regular or long-term shutdown, it is recommended to empty the medium in the pump to avoid the medium staying in the pump for a long time, which may cause damage to the pump body. At the same time, open the exhaust valve of the pump to empty the residual gas in the pump and ensure that the pressure in the pump returns to normal.

4. Disconnect the power supply

After confirming that the pump has completely stopped running, disconnect the power supply of the magnetic pump to avoid damage to the equipment caused by misoperation. After completing the shutdown procedure, you can fill in the corresponding information on the pump operating record, including stop time, inspection and maintenance information.

Second, precautions in the shutdown process

1, regularly check the operating status of the magnetic pump, find abnormal situations in time to deal with, to ensure that the pump in the normal state of shutdown.

2. When closing the outlet valve, it should be done slowly to avoid having a large impact on the pump; Pay attention to the correct time interval between closing the valve and power failure to ensure that the pump can stop smoothly after the valve is closed to avoid damage caused by sudden pressure changes.

3. If the pump needs to be shut down for a long time, ensure that the pump body is maintained and maintained to avoid corrosion problems caused by the medium staying for a long time.

4, during the downtime need to be checked regularly to ensure that the magnetic pump is in good condition, in order to be put back into use when needed.

5, because of its special structure, the magnetic pump needs to pay special attention to the maintenance of the sealing ring and permanent magnet transmission components during the shutdown process to ensure that it can work normally when starting again.

In short, when carrying out the shutdown process of the chemical magnetic pump, it is necessary to formulate specific shutdown steps according to the operating status of the pump, structural characteristics and other factors, and carry out regular inspection and maintenance during the shutdown to ensure that the pump can be put back into use when needed to create value for the enterprise. At the same time, the correct shutdown operation can also ensure that the service life of the pump is guaranteed, reducing the loss of equipment and maintenance costs.