Water pump and aquarium equipment comprising the water pump

An aquarium equipment, comprising a water pump, the water pump comprising a stator, a rotor assembly, an impeller, and a power generation induction module, wherein the stator comprises a U-shaped iron core and a coil winding wound around the U-shaped iron core, and the coil winding is connected to an external power source;

• the rotor assembly comprises a rotating shaft and a permanent magnet rotor;
• the impeller is connected to the rotating shaft or to the permanent magnet rotor;
• and the power generation induction module is spaced apart from the rotor assembly;
• the rotor assembly and the power generation induction module are both disposed within a range of a magnetic field at an opening of the U-shaped iron core, and the power generation induction module is electrically connected to an electric equipment.

The aquarium equipment of claim 15, wherein a stator chamber for accommodating the stator is provided concavely at an outer wall of the tank in a direction facing inward the tank,

• wherein the stator chamber comprises two first accommodation chambers spaced apart from each other, the U-shaped iron core comprises two second iron core protrusions which protrude from two coil windings respectively, the two second iron core protrusions are arranged in the two first accommodation chambers respectively,
• wherein an accommodation groove is disposed in an inner wall of the tank and between the two first accommodation chambers, the permanent magnet rotor is disposed in the accommodation groove,
• wherein two induction coils serve as the power generation induction module, and the two induction coils are wound respectively outside the two first accommodation chambers along circumferences of the first accommodation chambers. 17. The aquarium equipment of claim 16, wherein an electric equipment is disposed in the tank, the electric equipment comprises a lamp, a filter is detachably disposed in the tank and at a bottom of the tank, the lamp is mounted on the filter, the induction coils are mounted on a bottom of the filter, and the induction coils are arranged around outer circumferences of the first accommodation chambers respectively in response to fixing the filter at the bottom of the tank.