| 摘要 |
PROBLEM TO BE SOLVED: To provide a water stop valve which enables water stored in a water storage tank to be supplied to a feed water tank repeatedly at constant time intervals in constant water amounts without using electric power or machines.SOLUTION: The water stop valve is disposed in a feed water tank (24b) in which a liquid is retained and an outlet (22) is formed at the lower end. The feed water valve comprises: a floating ball (1) floating on the surface of the liquid retained in the feed water tank (24b); a water stop plate (15) disposed at the outlet (22) and provided with a water conducting hole (21) to discharge the liquid from; a water stop ball (13) which is attracted to the water stop plate (15) by a magnetic force, closes the water conducting hole (21) by contacting the water stop plate (15), and has a buoyancy; and a string (10) connecting the floating ball (1) with the water stop ball (13). |
