초록 ▼

An automatic liquid-supply stopper plug has a casing body which has an inlet port and a discharge port. Within the casing body, an inverted cup shaped member and a valve seat member are provided to be opposed to each other. A movable valve member is positioned so that it can slide on the inverted cu

An automatic liquid-supply stopper plug has a casing body which has an inlet port and a discharge port. Within the casing body, an inverted cup shaped member and a valve seat member are provided to be opposed to each other. A movable valve member is positioned so that it can slide on the inverted cup shaped member and the valve seat member to open or close a passage of liquid through the valve seat member. A first conduit which communicates with the discharge port is provided for pushing the movable member upwardly. A second conduit which communicates with the discharge port is provided for pushing the movable valve member downwardly when a preset level of liquid is obtained to stop the liquid-supply.

대표청구항 ▼

An automatic liquid-supply stopper plug, comprising: a casing body 11 having an inlet port 17 at the upper portion thereof and a liquid discharge port 86 at the lower end portion thereof; an inverted cup shaped member 37 fixedly received in said casing body 11 to be suspended within said casing body

An automatic liquid-supply stopper plug, comprising: a casing body 11 having an inlet port 17 at the upper portion thereof and a liquid discharge port 86 at the lower end portion thereof; an inverted cup shaped member 37 fixedly received in said casing body 11 to be suspended within said casing body 11; a valve seat member 52 mounted in said casing body at the position below said inverted cup shaped member 37 and having a generally tubular wall 57 extending downward from the top face thereof, said downward-extending wall 57 being provided with at least one window type opening 60 communicating with said liquid discharge port 86 of said casing body 11; a movable valve member 67 having a generally tubular wall 70 and a partition wall 71 of disk shape for sealingly and slidably surrounding said inverted cup shaped member 37 and for sealingly and disengageably covering said window type opening 60 of said valve seat member 52 to open or close said opening 60, said tubular wall 70 and said partition wall 71 defining an upper chamber 72 in combination with said inverted cup shaped member 37, and said tubular wall 70 and said partition wall 71 defining a lower chamber 73 in combination with said valve seat member 52; a compression spring 80 fitted between the inner face of said inverted cup shaped member 37 and the top face of said valve member 67 for normally depressing said valve member 67 in the downward direction; a manually operated knob 75 connected to said valve member 67 to be raised to a liquid supply position at which said opening 60 of said downward-extending wall of said valve seat member 52 is uncovered from said tubular wall 70 of said valve member 67; a first conduit 81 for hydraulically communicating said liquid discharge port 86 of said casing body 11 with said lower chamber 73 and having a liquid receipt port 83 projecting into said liquid discharge port 86; a second conduit 82 for hydraulically communicating said liquid discharge port 86 of said casing body 11 with said upper chamber 72 and having a liquid receipt port 84 projecting into said liquid discharge port 86; and a third conduit 85 diverging from said second conduit 82 and extending downward to detect the liquid level, the liquid received by said liquid receipt port 84 flowing down through said third conduit until the liquid level has not reached a pre-set level so that the lower end opening of said third conduit 85 is exposed to atmosphere and flowing upward through said second conduit 82 for filling into said upper chamber 72 when the lower end opening of said third conduit 85 is submerged under the surface of the accumulated liquid.