| 摘要 |
PURPOSE:To improve the assembly performance by installing a magnet on a motor shaft side onto a magnet installation body having an annular starting-up wall on the periphery, in the constitution in which the magnet installed onto an impeller in a pump chamber is opposed to the magnet on a motor shaft side through a partitioning plate. CONSTITUTION:When a magnet 6 is revolved by a motor 1, a magnet 3 on an impeller 1 aide which is opposed to the magnet 6 through a partitioning wall 5 and magnetically joined with the magnet 6 is revolved. Then, the impeller 1 which has the radial vanes 2 and into which the magnet 3 is embedded revolves and the fluid sucked from a suction inlet 11 is pressure-increased, and discharged from a discharge port 12. In this case, a magnet installation body 9 consisting of a magnetic body is installed onto a joint 8 press-fitting-fixed onto the motor shatt 7a, and the magnet installation body 9 is prepared by forming a starting-up wall 10 for positioning the magnet on the periphery. The magnet 6 is inserted into the magnet installation body 9 and installed magnetically.
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