The impeller and the magnetic sac are fixed at the connection of the thermal diffusion hole, the diffusion hole can make the pump shaft and bearing around the liquid forced circulation under the action of centrifugal force, can effectively distribute the heat generated by friction, prevent the pump chamber grease material due to high temperature deformation and melting.

Non-contact structure

By precisely setting the relative position of the passive magnet and the active magnet, the position of the magnetic sac can be effectively controlled. Even when idling, the rear end of the bearing will not contact the rear thrust ring. This structure effectively inhibits the generation of friction heat and ensures the lubrication of the friction part.