| 摘要 |
PROBLEM TO BE SOLVED: To simplify a constitution of parts as well as simplifying assembly of a centrifugal pump, and facilitate its manufacture by supporting a device in which an impeller, a driven magnet, and a bearing are simply assembled with each other to a support shaft. SOLUTION: An impeller 21 which is rotatably housed in a pump chamber side casing 2 and which is rotated cooperated with a driving magnet 5 rotated by a motor 4 in a motor side casing 3, is provided with an impeller 21a formed by folding upward a part of a disk shaped thin plate while cutting, and a bearing insertion hole on its center part. An annular driven magnet 20 which is magnetically connected to the driving magnet 5 is arranged on a lower surface of the disk shaped impeller 21. In this case, assembly is carried out by inserting a bearing 22 having a flange 22a into an insertion hole of a center part where the impeller 21 and the driven magnet 20 are laminated with each other. The assembly body is inserted into a support shaft 7, and is rotatably supported so as to assemble a centrifugal pump.
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