| 摘要 |
A drive unit of a magnet coupling pump, in which leakage of the magnetic flux to the outside and effect of the external magnetic field are suppressed, is provided. It includes: a driving magnet (219) positioned at an outside of the driven magnet (19) of the magnetic coupling pump (100) with respect to a rotation axis (A) of the magnetic coupling pump (100) to face the driven magnet (19) with a gap; a cup tube portion (221) made of a ferromagnetic material and in a tubular shape centered on the rotation axis (A); a case main body (231) including a cup (220) in which the driving magnet is fixed inside of the cup tube portion; a motor (210) rotating the cup around the rotation axis, and a tube portion (232), which is in a tubular shape and the cup is provided in the tube portion (232) with a gap. |
