The CQB-FJ fluoroplastic magnetic pump utilizes the working principle of a permanent magnet coupler to transmit torque without contact. When the prime mover drives the outer magnetic steel rotor, it synchronously rotates the inner magnetic steel rotor through magnetic field interaction. Since the inner magnetic steel rotor is integrated with the impeller, the impeller is driven without direct contact. As the liquid is enclosed within a stationary isolation sleeve, this pump operates as a fully sealed unit, eliminating the unavoidable issues of leakage, dripping, and seepage common in mechanical seal centrifugal pumps.