Spherical pump and motor assembly

A spherical pump and motor assembly, comprising:

• a spherical pump;
• and
• an outer rotor motor;
• wherein the spherical pump is provided with a rotary disc shaft;
• a cylinder body seat is provided at a lower portion of the spherical pump;
• the cylinder body seat is provided with a center hole, and the center hole is configured as a rotational support for the rotary disc shaft;
• the outer rotor motor comprises an outer rotor;
• the outer rotor comprises a rotor main body, which is cylindrical and upward-opening;
• a magnetic ring is arranged on an inner periphery of the rotor main body;
• and a rotor central shaft is provided at a center of a bottom surface of the rotor main body;
• the outer rotor motor further comprises a stator;
• the stator comprises a stator bracket with a central shaft hole;
• and a plurality of stator teeth are arranged on an outer periphery of the stator bracket, and a plurality of coil windings are arranged on the plurality of stator teeth, respectively;
• the rotor central shaft is fitted into the central shaft hole of the stator bracket to form a rotational pair;
• the stator bracket and the plurality of coil windings are provided in an annular space between the rotor central shaft and the magnetic ring;
• an upper end of the stator bracket is configured to protrude out of upper ends of the plurality of coil windings to form a connection portion;
• the cylinder body seat is fixedly connected to the connection portion;
• the rotary disc shaft is configured to be coaxial with the rotor central shaft;
• a lower end of the rotary disc shaft is engaged with an upper end of the rotor central shaft for torque transmission;
• the spherical pump comprises a cylinder body and a cylinder cover;
• the cylinder body is fixedly connected to the cylinder cover by ultrasonic welding, screw connection, adhesive bonding or a clamp to form a spherical cavity;
• the clamp is made of a metal or a heat-shrinkable plastic;
• the outer rotor motor comprises a protection casing;
• an upper end of the protection casing is provided with an opening;
• and the opening is sealedly and fixedly connected to an outer periphery of the connection portion;
• the protection casing is cylindrical;
• a positioning ring is provided between an inner periphery of the opening of the protection casing and the outer periphery of the connection portion;
• the positioning ring is sealedly and fixedly connected to the inner periphery of the protection casing and the outer periphery of the connection portion, respectively;
• and
• an upper end of the positioning ring is configured to fit a lower end of the cylinder body in shape.