| 摘要 |
<p>An apparatus for preventing reverse flows in a drainage is disclosed. In this apparatus, a floating device (41) and a reverse flow preventing device (54) act mutually in opposite directions owing to the floating force and the water pressure, and thus the bottom of the round body (20) of the apparatus is automatically opened and closed, so that the drainage can efficiently work, and the waste water and the draining water with foul odors can be prevented from flowing reversely. The apparatus for preventing reverse flows of waste water according to the present invention includes a round body (20) to be installed in a drain hole (60). A guide member (30) is installed on a second filtering net (25) of the top of the round body (20), and has a guide (31) at the center of it. An openable/closable device actuating member (40) is insertingly installed on the guide member (30), for moving up and down along the guide (31) owing to the floating force and the self-gravity. An openable/closable member (50) is installed on the guide member (30), for causing an air-tight sealing part to be opened and closed by being oppositely interlocked to the openable/closable device actuating member (40).</p> |
