| 摘要 |
<p>A cylinder fixed, axial-type rotary piston pump comprises a drive shaft (1) provided with a drum-type flywheel (2) or (2") coaxially mounted thereon, said flywheel being provided on its inner circumferential surface with a continuous inclined groove (2a) or (2"a) which is arranged so as to form a cycle of complete sine curve in its development view, and piston rods (8) connected to pistons (7) housed in cylinders (6), respectively, said piston rods being each engaged at its one end with said groove in a sliding manner, so that the pistons (7) are reciprocated by the rotation of the drive shaft (1). According to this invention, a large-sized apparatus may be manufactured and the sliding surfaces between movable parts may be remarkably reduced. Furthermore, this kind of pump may be operated with working fluids, for example, water rather than oil. </p> |
