| 摘要 |
PURPOSE:To obtain the title aerator capable of controlling the amt. of an intake air and further capable of sucking the seawater at a desired depth with a water suction hose by connecting a water suction control valve to an inlet branch pipe of an air sucking and bubbling fitting to control the water suction. CONSTITUTION:The water suction control valve 21 is fixed to the inlet branch pipe 12 of an air sucking and bubbling fitting. The water suction is controlled to control the actual pressure in the air suction pipe, and the amt. of an intake air can be controlled. The water suction hose 22 is further connected, the water suction port is fixed at a desired depth to suck water, and the water and air are circulated in a net fish preserve. |
