| 摘要 |
PURPOSE:To release an excessive CO2 gas and admixed air in a main body of a diffusing column by a simple operation of pushing a push part of an exhaust value by attaching a specific exhaust valve to an air outlet opened on an upper wall of the main body of the hollow cylindrical diffusing column equipped with an opened dissolution hole at the bottom. CONSTITUTION:CO2 gas in a CO2 gas cylinder B is dissolved in storage water in a water tank V from a delivery hole 9 of an air sending pipe 8. An exhaust valve 2 of an elastic material is attached to an air outlet 6 opened on an upper wall 11 of a main body 1 of a hollow cylindrical diffusing column equipped with an opened dissolution hole 12 at the bottom. The exhaust valve has a valve part 23 to usually close the air outlet by its own elasticity and a push part 25 to open the air port. When the push part of the exhaust valve is pushed downward, the air outlet is opened. |
