| 摘要 |
PROBLEM TO BE SOLVED: To prevent drainage from flowing back while constituting a first drain passage and a second drain passage independently so as to cause no mutual interference between drains of the first and second drain passages.SOLUTION: A drain trap is comprises of: a body part 1 opened at its upper part and provided with water seal in its inside; a cover part 2 opening the aperture 21 through which drain passes and closing an opening of the body part 1; a discharge port 11 for discharging inside drain configured on the side face of the body part 1; a bowl-like bowl part 12 provided with a wall in a cylindrical shape in the body part 1 and storing a part of drain in its inside; a cylindrical deodorization pipe 3 with its lower end arranged in the bowl-like bowl part 12 and forming water seal in cooperation with the bowl-like bowl part 12; and a drain branch pipe 13 flowing drain from other than the aperture 21 configured on the side face of the body part 1 into the body part 1. A backflow prevention wall 22 extending downward from the cover part 2 is configured in the drain trap. |
