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US 11,867,172 B2Granted
Uniaxial eccentric screw pump
AssigneeHEISHIN Ltd.
InventorNobuhisa Suhara
Life of this patent
Estimating the term…
Abstract
A uniaxial eccentric screw pump includes: a rotor 1 including a shaft body of a male screw type; a stator 2 having a through hole 2a of a female screw type through which the rotor 1 is inserted; a casing 3 connected to one end side of the stator 2; an end stud 4 connected, to the other end side of the stator 2; and a position adjusting member 5 that adjusts a relative position of the stator 2 with respect to the rotor 1 in an axial direction.
Claims15
A uniaxial eccentric screw pump comprising:
- a rotor including a male threaded shaft body;
- a stator having a female threaded through hole through which the rotor is inserted;
- a casing connected to one end side of the stator;
- an end stud connected to the other end side of the stator;
- and
- a position adjusting member that adjusts a relative position of the stator with respect to the rotor in an axial direction,
- wherein the position adjusting member is detachably attached to both the part between the stator and the casing and the part between the stator and the end stud.
4 more elements
A uniaxial eccentric screw pump comprising:
- a rotor including a male threaded shaft body;
- a stator having a female threaded through hole through which the rotor is inserted;
- a casing connected to one end side of the stator;
- an end stud connected to the other end side of the stator;
- and
- a position adjusting member that adjusts a relative position of the stator with respect to the rotor in an axial direction, wherein:
- an outer diameter of the rotor decreases in the axial direction;
- an inner diameter of the through hole of the stator decreases according to the change in the outer diameter of the rotor;
- and
- an eccentricity of the rotor changes in the axial direction, and an amount of the eccentricity of the rotor increases from a large-diameter side toward a small-diameter side of the rotor.
7 more elements
A uniaxial eccentric screw pump comprising:
- a rotor including a male threaded shaft body;
- a stator having a female threaded through hole through which the rotor is inserted;
- a casing connected to one end side of the stator;
- an end stud connected to the other end side of the stator;
- and
- a position adjusting member that adjusts a relative position of the stator with respect to the rotor in an axial direction,
- wherein the position adjusting member has a hollow cylindrical shape, and an inner peripheral surface of the position adjusting member is formed in a female screw same as or similar to an inner peripheral surface of the through hole of the stator.
4 more elements
Dependencies are inferred from the claim text.