| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a two-stage watering device slowly storing water of water current conduced from water sources such as river, pond, tap water and/or rainwater, and draining the water at a burst at each prescribed amount of the water, which includes a water storage/drainage device free from electric control. <P>SOLUTION: The two-stage watering device is applied to two-stage water storage and drainage in an automatic watering device, and includes: a primary water-storage means which has a drainage port at its end part, retains a prescribed amount of water by directly pouring pump-up water or tap water conduced from the water source into a primary water-storage container and drains the water at a burst; and a tank as a secondary water-storage means which receives the drained water from the primary water-storage means. The tank comprises a siphon tank through which the water is drained at a burst when the stored water reaches a prescribed amount, and the secondary water-storage means receives drained water from the primary water-storage means several times to use the drained water as initiation water, to achieve the automatic watering device using open loop without employing a complicated electrically-controlled device such as a water-level controller and a magnetic valve. <P>COPYRIGHT: (C)2012,JPO&INPIT |
