What are the causes of demagnetisation of magnetic pumps

The two common causes of demagnetisation are high temperature demagnetisation and strong pull demagnetisation, which can be avoided by monitoring the operating status of the equipment and optimising the operating parameters.

Before understanding the causes of demagnetisation of magnetic pumps, it is important to have a brief understanding of their working characteristics and structure. Stainless steel magnetic pump is a new type of machine pump developed on the basis of modern magnetism, the main components are the external magnetic rotor and coupling, the two and the motor are connected to each other, will form a closed isolation set in the sealed pump cavity, the isolation set is also fixed in the pump cover, can achieve complete isolation of the transport medium. Because the magnetic pump can completely eliminate the problem of media leakage from ordinary machine pumps, it is used in large quantities for the transport of toxic media, as well as flammable and explosive gas and liquids.

From past experience in the transport of equipment, the magnetic pump demagnetisation is mainly due to two reasons, details are as follows.

A, high temperature demagnetization

Stainless steel magnetic pump structure is unique, in operation is mainly dependent on the medium to achieve lubrication and cooling, if the operation of the abnormal working conditions lead to the operation of the dematerialization, it will lead to rapid heating of the pump cavity, high temperature demagnetization. Therefore, if you want to avoid this situation, it is recommended to ensure stable working conditions and try to arrange a person to monitor the use of equipment to avoid airlift, and at the same time you can improve the cooling of the magnetic pump lubrication to prevent the vaporization of the friction fluid in advance and other situations.

B, strong pull demagnetization

The main reason for this is the abnormality of the components in the pump during operation, such as the inner magnet and impeller jamming, resulting in the pump not being able to jump immediately, while the motor continues to work causing the outer magnet to continue to run, making the inner and outer magnetic cylinder demagnetised. In this regard, it is recommended to optimise the operating parameters according to the actual process requirements and to regularly check the ageing and wear of the pump body components.

Magnetic pump demagnetization is the cause of the above two common situations, in addition to the transport medium containing too much iron material will also lead to the pump demagnetization, if not effectively targeted treatment, frequent demagnetization will not only affect the normal work of the equipment, but also increase maintenance costs and slow down the progress of the process project, so it is recommended that users with such problems directly consult zhaoquan screw pump industry station customer service to obtain professional technical guidance.