Drainage device for building

The utility model discloses a drainage device for building, the device comprises a device body, the device body includes the base that the level set up, wherein, be equipped with logical groove in thebase, just the top of base is equipped with the stand of symmetrical vertical setting, the bottom of base is equipped with the support column of symmetrical vertical setting, and between be equippedwith flow dividing chamber between the support column. Beneficial effect: through rotatory motor matched rotation axis under first swinging boom and second swinging boom act on, it carries out the up-and -down motion to make the transfer line carry out vertical direction, and the fluid passage drainage tube inflow of being convenient for is filled in to the flow dividing chamber systematic underthe transfer line effect, and discharge through the drain pipe, the filter pad prevents to inhale debris in addition, the stability of device operation has been ensured, the service life of the deviceis prolonged, feasiblely can