Uniaxial eccentric screw pump with radial adjustment of the stator

A uniaxial eccentric screw pump comprising:

• a stator having a through hole whose inner surface is formed in a female screw shape;
• a rotor that is a male screw shaft body inserted into the through hole of the stator;
• a plurality of shims that are arranged on a radially outside of the stator in a range from one end to an other end of the stator, are in surface contact with an outer surface of the stator, are capable of compressing the stator by moving radially inward with respect to the stator, and have, on an outer surface, an inclined surface gradually inclined radially inward or outward toward one end;
• and
• an adjustment member that is movable in an axial direction with respect to the stator and has a pressing part that can press the inclined surface of each of the shims, wherein
• the incline surface of each of the plurality shims extends in a longitudinal direction of the stator so that at least half of a length of the inclined surface is within an inner side with respect to both of the one end and the other end in the longitudinal direction of the stator.