| 摘要 |
PURPOSE: A filter head of a water purifying filter with a backflow preventive function is provided to prevent the backflow of water without a separate check valve. CONSTITUTION: A filter head of a water purifying filter with a backflow preventive function includes flow paths(10b, 20b) by using an inlet(10) and an outlet(20) in the shape of pipes(10a, 20a). An elevating support(12) is upwardly supported by an elevating unit(14) in a pipe for the inlet. If the elevating support descends by the pressure of water, and a flow path is opened. When the flow path is opened, water is supplied. If the supply of the water is stopped, the elevating support ascends to close another flow path. The backflow of water in a main body is prevented.
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