Provided is a back flow preventing device for a drain, which prevents liquid from flowing backward through an inlet. The back flow preventing device for a drain includes: a main body having a receiving space therein and at least one inlet on an upper surface and having a drain communicating with the outside of at least one of a lower surface and a side surface; a first rotating plate rotationally elastically coupled to the inlet and opening and closing the inlet; an auxiliary outlet which is penetrated into the lower surface or the side surface of the main body and to which an auxiliary drain is connected; and a second rotating plate rotationally elastically coupled to the auxiliary outlet and opening and closing the auxiliary outlet.

    유입구를 통해 액체가 역류하는 현상을 방지하기 위한 배수관 역류방지장치가 제공된다. 배수관 역류방지장치는, 내부에 수용공간이 형성되고 상면에 적어도 하나의 유입구가 형성되고, 하면과 측면 중 적어도 한 곳에 외부와 연통된 배수관이 설치되는 본체와, 유입구에 회동 가능하게 탄성결합되어 유입구를 개폐하는 제1 회동판과, 본체의 하면 또는 측면에 관통 형성되어 보조배수관이 연결되는 보조배출구와, 보조배출구에 회동 가능하게 탄성결합되어 보조배출구를 개폐하는 제2 회동판을 포함한다.


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    Title :

    Preventing backflow device for drain


    Additional title:

    배수관 역류방지장치


    Contributors:
    HWANG YUNJI (author) / KIM SEONGGYU (author) / RYU YONGHEE (author) / LEE DAEHEE (author)

    Publication date :

    2019-06-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    E03F SEWERS , Abwasserkanäle / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS



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