| 摘要 |
PROBLEM TO BE SOLVED: To surely obviate outflow of bubbles by installing a perforated plate at an upper-end opening section, mounting an elbow for fitting a hose on the perforated plate and attaching a bubbling preventive plate, in which the inside diameter of a hole section is equalized to the lower end of the elbow for fitting the hose, onto the peripheral underside of the perforated plate. SOLUTION: A perforated-plate receiving frame 3 is screwed to the upper-end opening section of a trap body 1, and a collar-shaped engaging piece 5 formed at the upper end of a supporting section 4 supporting a water-sealing cylinder 2 is engaged with the perforated-plate receiving frame 3. A thin discoidal bubbling preventive plate 7 with a hole section 71 is pinched between the engaging piece 5 and the periphery of the perforated plate 6, and the lower end 81 of an elbow 8 for fitting a hose is inserted into the hole section 71 of the bubbling preventive plate 7. The end section of the hose for a washing machine is connected at the upper end 82 of the elbow 8 for fitting the hose and water from the washing machine is drained, and the blowing-up of bubbles from the hole section 71 is obviated because the lower end 81 of the elbow 8 is inserted into the bubbling preventive plate 7 even when flowing water from the elbow 8 is stopped. Accordingly, the outflow of bubbles from the inside of the drain trap can be averted.
|
