Magnetic Drive Pumps for Chemical Applications

Working Principles of Magnetic Drive Pumps

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Magnetic drive pumps, also known as magnetically coupled pumps, operate based on the principle of magnetic force. These plastic chemical pumps are commonly used in various industries, including the handling of corrosive or hazardous fluids where leakage prevention is crucial.
The working principle of magnetic drive pumps involves the use of a magnetic coupling that connects the driving motor and the impeller. The coupling consists of two magnets, an outer magnet connected to the motor shaft and an inner magnet attached to the impeller. These magnets are separated by a sealed containment shell, typically made of non-magnetic materials such as plastic or ceramics.
When the motor shaft rotates, the magnetic field created by the outer magnet induces a corresponding magnetic field in the inner magnet, resulting in the rotation of the impeller. The magnetic forces transmitted through the containment shell allow the transfer of torque from the motor to the impeller without any physical connection.
The absence of a direct shaft connection eliminates the need for traditional shaft seals, which are prone to wear and leakage over time. This design feature makes mag drive pumps highly reliable and ideal for handling corrosive or toxic fluids, as it effectively prevents leakage and ensures the safety of the environment and personnel.

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