JP2011032797A5 - - Google Patents

Claims (2)

A drain trap provided below the water tank so that water drained from the water tank flows out to the sewage side,
A drain pipe connected to a drain outlet located below the aquarium and leading the drainage flowing out from the drain;
A sealed chamber that is connected to the drain pipe and forms a flow path for drainage from the drain pipe, and contains sealed water that can close an outlet portion of the drain pipe;
An outflow pipe connected to the sealed water chamber so as to guide waste water overflowing from the sealed water chamber to the sewer side;
The overflow pipe whose outlet is positioned upstream from the outflow pipe so as to guide the drainage flowing out from the overflow port opened above the water tank,
Have
The outflow pipe is provided with a flow passage restriction portion formed so as to be restricted from the upstream flow passage , and the flow passage restriction portion surrounds a part of the outer periphery of the drain pipe or the overflow pipe. A drainage trap characterized by being formed in .   The drainage trap according to claim 1, wherein the outflow pipe is set so that a cross-sectional area of the flow passage restricting portion is smaller than a cross-sectional area of the drainage pipe.