Importance

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Abstract

A uniaxial eccentric screw pump includes: a stator 8 having a through hole 8a whose inner surface is formed in a female screw shape; a rotor 14 that is a male screw shaft body inserted into the through hole 8a of the stator 8; a plurality of shims 9 that are arranged on a radially outside of the stator 8 in a range from one end to the other end of the stator 8, are in surface contact with an outer surface of the stator 8, are capable of compressing the stator 8 by moving radially inward with respect to the stator 8, and have, on an outer surface, an inclined surface 18 gradually inclined radially inward or outward toward one end; and an adjustment member 10 that is movable in an axial direction with respect to the stator 8 and has a pressing part 26 that can press the inclined surface 18 of each of the shims 9.

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First Claim