A magnetic drive pump is a leak-free fluid transfer device that utilizes magnetic coupling to transmit power. Its working principle is based on the magnetic coupling effect of magnetic fields and the hydrodynamics of centrifugal pumps, realizing the organic combination of power transmission and fluid transfer.
Magnetic drive pumps mainly consist of core components such as a drive motor, outer magnetic rotor, inner magnetic rotor, isolation sleeve, impeller, and pump body.
When the motor starts, the outer magnetic rotor begins to rotate, and the permanent magnets embedded on its surface generate a rotating magnetic field. Since the isolation sleeve is made of non-magnetic material, the magnetic field can penetrate the sleeve unimpeded and act on the inner magnetic rotor. The permanent magnets on the surface of the inner magnetic rotor are driven by magnetic torque under the influence of the rotating magnetic field, forming synchronous rotation with the outer magnetic rotor. This contactless power transmission method completely eliminates the leakage risk caused by direct mechanical shaft connection in traditional pumps.
The fluid transfer process follows the basic principle of centrifugal pumps. The impeller, rotating synchronously with the inner magnetic rotor, exerts centrifugal force on the fluid through its blades, enabling the fluid to gain kinetic energy. Under the action of centrifugal force, the fluid is thrown from the center of the impeller to its edge and enters the volute-shaped flow channel of the pump body. The volute-shaped flow channel gradually converts the kinetic energy of the fluid into static pressure energy, allowing the fluid to be transported along the outlet pipeline under pressure. Meanwhile, a low-pressure area is formed at the center of the impeller as the fluid is thrown out. Under the action of the pressure difference between the external system pressure and the internal pressure of the pump, new fluid continuously enters the center of the impeller, achieving continuous transfer.
The isolation sleeve plays a crucial role in the entire working process. It not only blocks the contact channel between the fluid and the external environment to prevent medium leakage but also withstands the pressure of the fluid inside the pump and the magnetic field force between the inner and outer magnetic rotors. Its structural strength and material performance directly affect the overall sealing performance and operational stability of the pump.
In summary, magnetic drive pumps achieve contactless power transmission through magnetic coupling, complete fluid transfer based on the principle of centrifugal force, and eliminate leakage risks through the sealing effect of the isolation sleeve, forming an efficient, safe, and environmentally friendly fluid transfer solution. This integrated working mechanism gives it irreplaceable application value in various industrial scenarios.
TEFFIKO has specialized in the field of magnetic drive pumps for many years. The magnetic drive pumps manufactured by TEFFIKO excel in sealing performance, stability, and efficiency. Choosing TEFFIKO means choosing a reliable fluid transfer partner built on scientific principles, ensuring industrial production operates steadily with safety and efficiency.
