| 摘要 |
A highly efficient and long-life pump is provided through improvement of pump efficiency by extending an effective length of a blade of an impeller and through reduction of friction loss of a thrust bearing. In a pump 110, a suction direction X and a discharge direction Y of a liquid are approximately perpendicular to each other. The pump 100 includes a shaft 27 positioned downstream of a suction inlet 22; an impeller 25 configured in a disk shape that rotates around the shaft 27, the impeller 25 having a plurality of blades 25c formed radially in a radial direction from a center area located at a center portion of the disk shape as seen in the suction direction X, the plurality of blades 25c being positioned at an approximately same longitudinal position as a longitudinal position of a discharge outlet 23; and a bearing (18-1) that receives the shaft 27, the bearing (18-1) being positioned at the center area of the impeller 25 and having a through hole (18-1c) as a guide portion for guiding the liquid drawn in from the suction inlet 22 to the discharge outlet 23.
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