초록 ▼

An aeration apparatus for a wastewater treatment plant having an air line connected to an air source, a drop line connected in fluid communication with the air line, a check valve positioned in the drop line between an orifice at the bottom of the drop line and the air line, and a diffuser member ex

An aeration apparatus for a wastewater treatment plant having an air line connected to an air source, a drop line connected in fluid communication with the air line, a check valve positioned in the drop line between an orifice at the bottom of the drop line and the air line, and a diffuser member extending around the orifice on the drop line. The check valve serves to prevent liquid from passing therethrough. The drop line includes a tube which extends downwardly from the air line, an upper adapter fastened to an end of the tube opposite the air line, and a lower adapter engaging the upper adapter in fluid communication with said tube. The upper adapter is a male threaded member and the lower adapter is a female threaded member. The check valve is affixed within the lower adapter adjacent to the female threads. The check valve includes a disk having a plurality of holes extending therethrough and a resilient flap valve extending over the holes and juxtaposed against the disk.

대표청구항 ▼

An aeration apparatus for a wastewater treatment plant comprising: an air line connected to an air source and extending therefrom; a drop line connected in fluid communication with said air line, said drop line having an orifice adjacent an end of said drop line opposite said air line, said drop lin

An aeration apparatus for a wastewater treatment plant comprising: an air line connected to an air source and extending therefrom; a drop line connected in fluid communication with said air line, said drop line having an orifice adjacent an end of said drop line opposite said air line, said drop line comprising: a tube extending downwardly from said air line; an upper adapter positioned at an end of said tube opposite said air line; and a lower adapter engaging said upper adapter in fluid communication with said tube, said orifice formed in said lower adapter; a check valve means positioned in said drop line between said orifice and said air line, said check valve means for preventing liquid from passing therethrough, said upper adapter having a male threaded member, said lower adapter having a female threaded opening, said female threaded opening in sealed mating engagement with said male threaded member, said check valve means affixed within said lower adapter adjacent said female threaded opening; and a diffuser member extending around said orifice.