| 摘要 |
PURPOSE:To expand a scope of substantial tank capacity, by keeping a suction part and a filter at a tip end of a flexible tube attached to an inlet of a feed pump being set up inside a tank body in a fixed set up state in making a tank bottom wall a criterion by a spring. CONSTITUTION:A filter 10 to be attached to an inlet 2a of a feed pump 2 forms its upper wall 10a into an annular diaphragm form by means of an elastic material, and its inner peripheral edge flange 10b is engaged with an annular groove 11b formed on the circumference of an extension part 11a of a flexible tube 11, whereby it is attached to the inlet 2a free of vertical motion. On the other hand, the tube 11 makes the extension part 11a engage an annular bead part 2b of a drum part of the inlet 2a. A small diametral part 11c extending downward from an inlet terminal 2c of the tube 11 is made up into being free of expansion and contraction, and a suction part 12 is formed at the tip end. In addition, a spring 13 is externally fitted in this small diametral part 11c, while the suction part 12 is made contact with a filter bottom wall 10c. |
