Liquid pump permanent magnet rotor with plastic insert and channel arrangement

A liquid pump with a housing in which a wound stator and electronics are arranged in a dry area, a permanent magnet rotor that is arranged in a wet area, a shaft that is held on the one hand in a pump head and on the other hand in a shaft receptacle in a containment shell, wherein the containment shell separates the dry area from the wet area, and at least one bearing which is incorporated in the permanent magnet rotor and arranges it rotatably on the shaft,

• wherein the permanent magnet rotor comprising:
• a plastic insert and a permanent magnet, and that at least one fluid channel running parallel to the axis is formed between the plastic insert and the permanent magnet,
• wherein at least one projection formed on an underside of the impeller, said projection being arranged radially around a section of the plastic insert,
• wherein at least one injection point is formed on an outer surface of the at least one projection and/or an inner surface of the at least one projection, and
• wherein permanent magnetic material encloses the at least one projection and the at least one injection point to form the permanent magnet rotor.