The invention relates to a magnetic pump. The magnetic pump comprises a motor, an air guide disc, a bracket, an outer
magnet, a pump body, a pump cover, an
impeller, a rotor and an isolation sleeve, wherein the air guide disc is additionally arranged between the support and a motor end cover, and a
flange on an outer edge of the air guide disc plays a role in air guide, so that
airflow generated by a fan at a
motor shaft end is guided to an inner side of the
flange through a surface of the motor outer cover and guided into the support through a gap between the air guide disc and the motor endcover; air
moisture between the outer
magnet and the isolation sleeve is prevented from being frozen at low temperature or excessively high in temperature, the outer
magnet and the rotor are blocked in a
closed cavity formed by the motor end cover, the isolation sleeve and the pump cover through the isolation sleeve,
moisture in external air is prevented from entering the gap between the outer magnet and the isolation sleeve, the situation that the transmission of the magnetic pump is affected due to a fact that the
moisture is frozen is avoided, the direct
butt joint of the support and the motor can be avoided through the air guide disc, and the situation that the normal operation of the magnetic pump is affected due to the fact that excessively heat or excessively cold temperature of thetransmission medium is directly transmitted to the motor is avoided.