초록 ▼

An automatic flushing apparatus for vacuum flow system urinals. A pressure sensing switch responds to the hydrostatic pressure resulting from one or two urinations and directs the system vacuum to both a water dispensing valve and the main discharge valve to automatically flush the system with a mea

An automatic flushing apparatus for vacuum flow system urinals. A pressure sensing switch responds to the hydrostatic pressure resulting from one or two urinations and directs the system vacuum to both a water dispensing valve and the main discharge valve to automatically flush the system with a measured amount of water to prevent odors and soil drain scale buildup.

대표청구항 ▼

In a vacuum sewage flow system of the type characterized by a manual flushometer that admits water into a urinal, a pressure sensing device that responds to the increased hydrostatic pressure resulting from the flush water, a vacuum switch that opens in response to the pressure sensing device, a dis

In a vacuum sewage flow system of the type characterized by a manual flushometer that admits water into a urinal, a pressure sensing device that responds to the increased hydrostatic pressure resulting from the flush water, a vacuum switch that opens in response to the pressure sensing device, a discharge timing controller activated by and connected to system vacuum through said vacuum switch and through a check valve and orifice device, and a main discharge valve activated by and connected to system vacuum through said discharge timing controller such that the opening of the main discharge valve permits flow from the urinal which drops the hydrostatic pressure, resets both the pressure sensing device and vacuum switch and admits atmospheric pressure through the said orifice to the timing controller and main discharge valve to reset the system to its original status the improvement comprises: a vacuum controlled water dispensing valve; an additional vacuum line connecting the discharge timing controller to the vacuum controlled water dispensing valve so that flush water is introduced into the urinal in response to the activation of the pressure sensing switch.