초록 ▼

Disclosed is an automatic valving system for shutting off liquid flow into a container when the level of liquid within the container is above a predetermined level, and for permitting liquid flow when the liquid is below the predetermined level. A liquid is positioned within the container at the pre

Disclosed is an automatic valving system for shutting off liquid flow into a container when the level of liquid within the container is above a predetermined level, and for permitting liquid flow when the liquid is below the predetermined level. A liquid is positioned within the container at the predetermined level, and a pressure responsive shutoff valve is fluidly connected in series between a source of liquid under pressure and the interior of the container. The shutoff valve has communication with the fluid sensor and is operative to shut off liquid flow into the container in response to a pressure variation received from the sensor upon the level of liquid within the container rising above the predetermined level.

대표청구항 ▼

A valving system for permitting substantial liquid flow into a tank upon the leveL of liquid within the tank being below a predetermined level and for preventing any substantial liquid flow into the tank upon the level of liquid within the tank being above the predetermined level, the valving system

A valving system for permitting substantial liquid flow into a tank upon the leveL of liquid within the tank being below a predetermined level and for preventing any substantial liquid flow into the tank upon the level of liquid within the tank being above the predetermined level, the valving system comprising: a liquid sensor comprising first, second, and third fluid nozzles and means immovably supporting the nozzles within the tank, the first and second nozzles being substantially coaxially aligned, positioned above the predetermined level, and directioned toward each other, the third nozzle being positioned below the predetermined level, between the first and second nozzles, and directioned toward the common axis of the first and second nozzles; a unidirectional valve having an inlet, an outlet, and a port, the valve comprising a means normally permitting liquid flow between the inlet and outlet and, alternatively, for preventing liquid flow upon the valve port receiving liquid under a pressure above a predetermined level relative to the pressure or liquid received through the inlet; a first conduit having a first end connected to the valve inlet and a second end connectable to a source of liquid under pressure; a second conduit communicating between the valve outlet and the interior of the tank; a third conduit providing communication between the first nozzle of the liquid sensor and the first conduit and valve inlet and comprising a means for conducting liquid under pressure from the first conduit to the first nozzle to cause a jet of liquid to be ejected from the first nozzle toward the second nozzle with sufficient force to impinge upon the second nozzle; a fourth conduit communicating between the second nozzle and the valve port and comprising a means for conducting liquid under pressure from the second nozzle to the valve port upon liquid under pressure being received by the second nozzle from the first nozzle, the valve comprising a means preventing liquid flow from its inlet to its outlet upon liquid pressure being received through the fourth conduit upon fluid ejected from the first nozzle being received by the second nozzle; and a fifth conduit communicating between the third conduit and the third nozzle, the third nozzle comprising a means for ejecting liquid received from the fifth conduit toward the jet of liquid ejected from the first nozzle for diverting the jet from the second nozzle upon the third nozzle being above the level of liquid within the tank, whereby the valve remains open and, alternatively upon the level of liquid within the tank rising to the predetermined level, for dissipating liquid received from the fifth conduit, whereby the liquid jet ejected from the first nozzle is permitted to impinge upon the second nozzle for effecting operation of the valve to prevent liquid flow from its inlet to its outlet.