| 摘要 |
<p>With respect to any overflow from storage tank, without making cutting off or perforation of the tank wall, perpetual maintenance-free outflow is effected by means of a siphon without the use of power pump before overflowing. Auxiliary pools fixed to both ends of siphon are additionally installed. Referring to FIG. 1A, W-curved tube (1) that upon expansion on a plane, assumes a W-shape is used as a siphon. Start-up portions on both sides thereof are used as auxiliary pools. Even when the water level in storage tank (5) lowers to the bottom, a balance is kept by the heads (2) of water held in the auxiliary pools to thereby stop any water flow break in the siphon, enabling perpetual prevention of breakdown of siphon action. Every time the water level in the storage tank once more goes up above the auxiliary pools and set water level (4), by the state of water head (7) similar to that of the siphon tube of FIG. 6 made from the valve 34 of FIG. 7, 38 of FIG, 8, and drainpipe 39, increased water is caused to naturally and rapidly flow out through the siphon.</p> |
