Suction-discharge device for fluids comprising a piston within a rotating inner tube and a plurality of suction and discharge holes

Abstract

An object of the present invention is to provide a suction-discharge device for fluids capable of sucking fluids continuously and discharging fluids continuously under fixed flow rate and pressure, without substantially bringing about pulsations of even one unit. The device comprising a device body having a fitting hole and set comprising a suction hole and a discharge hole, an inner tube fitted rotatably in the fitting hole of the device body, a piston fitted slidably in said inner tube, and a plurality of through-holes formed in said inner tube, said through-holes of said inner tube each being a slot which is long in a rotational direction and inclined with respect to an axis of the inner tube, the suction hole and the discharge hole of said device body each being a slot which can partially overlap with said through-hole wherein when one of the through-holes of said inner tube communicates with the suction hole of said device body, the other through-hole of the inner tube communicates with a discharge hole of said device body, and when a fluid is sucked from the communicated suction hole said fluid is discharged from the communicated discharge hole.

Dependencies are inferred from the claim text.