Patent ID: 11879462
Assignee: nan
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 6:
7. The Moineau pump-type quantitative liquid-discharging apparatus of claim 1, wherein:
the slot hole is formed to extend as a twin helices hole having two rows of screw thread;
the rotor is formed to have one screw thread, a lead of the rotor being a half of a lead of the twin helices hole;
in the main shaft, a center of a first rotary shaft part rotatably supported by the first slide bearing of the first shaft part is formed to match a center of any one arbitrary cross section in an axial direction of the rotor, and a center of a second rotary shaft part rotatably supported by the second slide bearing of the second shaft part is formed to match a center of a cross section in the axial direction which is spaced L/2 (L: a lead of the screw thread of the rotor) from the any one arbitrary cross section in the axial direction.