Water purifying combination and ultraviolet lamp therefor

Claim 1

A purifying combination comprising: an elongated tube separated into a first end barrel member having an inlet end and a second end barrel member spaced from the first end barrel member and having an outlet end and a plurality of intermediate barrel members containing filtering materials, said intermediate barrels threadedly coupled each to the other and located substantially coaxial each to the other; an ultraviolet lamp mounted in at least one of said intermediate barrels for treating water passing therethrough; an annular sealing ring and a perforated disc located between adjacent intermediate barrel members for sealing against water pressure and retaining the filtering materials contained within respective intermediate barrels; a water supplier having a discharge end connected to the inlet end of the first end barrel member for supplying water to be filtered and treated by said ultraviolet lamp, said water supplier drawing water from a water source; an outlet pipe connected to the outlet end of the second barrel member, extending into the water source and contoured to extend substantially parallel to the water level of the water source for discharging filtered and treated water into the water source; and an air pipe extending from above the water level into the outlet pipe through a top wall thereof for mixing fresh air into the filtered and treated water passing therethrough.