| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a piping structure of a tank body excelling in design and watertightness, simplifying torque control, causing no stagnation of dead water, and facilitating molding of members. <P>SOLUTION: The piping structure of the tank body includes the tank body provided with a drain port 1 in the bottom face, and a cylindrical connecting cylinder part 2 provided downward from the peripheral edge of the drain port 1; a drain plug body 3 formed in substantially cylindrical shape, and having an opening 4 into which drainage flows, at the upper part, a flange part 5 continuously provided further above to project along the peripheral edge, and a connecting receiving part 6 provided upward from the upper face of the flange part 5; an annular packing 7 arranged between the outer side face of the connecting cylinder part 2 and the inner side face of the connecting receiving part 6 to abut in a watertight manner on the outer side face of the connecting cylinder part 2 and the inner side face of the connecting receiving part 6; and a fixing part for fixing and connecting drain plug body 3 to the tank body further at the outside part of the connecting receiving part 6. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
