| 摘要 |
PURPOSE: To provide a closed freshwater purification device for preventing various contaminants from being deposited on a filter mesh to consistently purify closed freshwater, collecting and discharging contaminants in a prescribed part of water tank to easily perform a contaminant collection operation and mixing water and air along with a freshwater filtering operation to increase a dissolved oxygen amount of freshwater. CONSTITUTION: The device(1) for purifying closed freshwater comprises: a water tank(2) on an upper portion of which a lid(21) is installed, which is constructed in such a structure that width of the water tank is narrowed as it goes from an upper part to a lower part of the water tank, and which is erected by a fixed frame(24); a contaminant collection part(3) which is installed inside the water tank and equipped with a contaminant guiding port(31) and a contaminant ascent preventing port(32) vertically installed with being spaced apart from each other in a prescribed distance; a filter part(4) installed above the contaminant collection part; an injection part installed in a space between the contaminant collection part and the filter part; an inflow part installed under the contaminant collection part; a discharge part(23) installed at one side of an upper portion of the filter part; and a pumping part comprising a first pump and a second pump connected to the water tank by pipes to supply closed freshwater into the water tank and discharge contaminants from the water tank.
|
