Rotor drive mechanism and pump apparatus

Abstract

To provide a rotor drive mechanism which realizes that a rotor rotating at high speed can be used by reducing the amount of heat and vibrations generated when the rotor is rotated at high speed and lowering a contact pressure between an outer surface of the rotor and an inner surface of a stator inner hole or preventing the outer surface of the rotor and the inner surface of the stator inner hole from contacting each other. A rotor drive mechanism (53) is capable of causing an external screw type rotor (22) of an uniaxial eccentric screw pump (23) to rotate and carry out a revolution movement, the uniaxial eccentric screw pump (23) is configured such that the external screw type rotor (22) is attached to an inner hole (29a) of an internal screw type stator (29), and the external screw type rotor (22) is caused to rotate by a rotation speed control driving portion (26) and is caused to carry out a revolution movement by a revolution speed control driving portion (24).

Dependencies are inferred from the claim text.