| 摘要 |
PURPOSE:To reduce the operating efficiency and to efficiently drain water by securing two or more or disks of different diameters as rotors to a rotational shaft of a motor disposed horizontally at an interval, thereby varying the recovery amount in response to the dipping and non-dipping of the disc in drain water. CONSTITUTION:Rotors 6 are formed of two disks 6a, 6b of different diameters disposed at the prescribed interval. In other words, when the drain amount is more and the water level becomes high, the disks 6a, 6b are contacted with (dipped in) the drain water 2, the disk 6b is contacted only when the water level is lowered since the diameter is larger, thereby draining the water. A rotational shaft 5a of a motor 5 is naturally secured to the center of the discs 6a, 6b. Accordingly, the level of the water 2' is higher than the disk 6a contacted with the water 2', the recovery amount is more, while when lower, the recovery amount is less to provide an effect of automatically deciding the recovery amount in response to the storage amount. |
