| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent remaining of water in a casing due to leaking of water through a switching valve or intrusion through a slit between a sprinkling pipe and a casing, and to prevent an aeration agitator from sinking. SOLUTION: This aeration agitator has the structure described below. A switching valve 3 and a sprinkling pipe 5 are housed in a casing 7 attached to a float 1, and the switching valve 3 is attached to an injection port 2A of a submersible pump 2. The entrance 4A of an ejector 4 is connected to one port of the switching valve 3, while an entrance 5A of the sprinkling pipe 5 is connected to the other port of the switching valve 3. A drawn part 4B of the ejector 4 is inserted into a sucking room 4C, to which an air sucking pipe 6 is connected as a branch. A water collecting pipe 9A is connected to the inside of the casing 7. This water collecting pipe 9A and the neighbor of the entrance of the air sucking pipe 6, namely the position just downstream side of an electromagnet valve 10 attached to the entrance of the air sucking pipe 6, are connected to each other with a water discharging pipe 9B.</p> |
