| 摘要 |
Disclosed are a drain trap and a device for opening/closing a drain trap. The drain trap of the present invention comprises: a first inlet pipe for guiding waste water flowing from a first direction to drain downward; a second inlet pipe for guiding waste water flowing from a second direction to drain downward; and a drain body unit through which waste water flowing from the first and second directions passes before being drained into a sewage system, wherein the diameter of the second inlet pipe increases in a stepwise manner towards the drain body unit. The device for opening/closing a drain trap of the present invention comprises: a drain pipe for guiding waste water flowing from an upper side to drain downward; an opening/closing plate which is coupled with an outlet of the drain pipe, and which is opened by the weight of waste water which is discharged via the outlet; and a recovery member which is coupled with the opening/closing plate and allows the opening/closing plate to close the outlet when the weight of waste water is relieved. The present invention provides a drain trap in which transfer pipes of various sizes can be coupled with each other, and a device for opening/closing a drain trap for preventing seepage of sewer odor indoors. |
