초록 ▼

A generally tubular coarse bubble diffuser for aerating waste water is constructed of polyvinyl chloride or a similar plastic material. The diffuser body has a main section with flat side walls through which outlet ports are formed. The opposite ends of the diffuser body are cylindrical and are conn

A generally tubular coarse bubble diffuser for aerating waste water is constructed of polyvinyl chloride or a similar plastic material. The diffuser body has a main section with flat side walls through which outlet ports are formed. The opposite ends of the diffuser body are cylindrical and are connected with the main section by transition sections which avoid abrupt changes in the wall thickness or diffuser connector diameter. One end is solvent welded in a plastic Tee fitting and the other end receives a removable end cap. The flat walls provide efficient oxygen transfer and the cylindrical ends allow the use of a threaded end cap and a secure large diameter solvent weld connection to the Tee fitting which directs air to the diffuser.

대표청구항 ▼

In a waste water aeration system having a plastic fitting presenting at least one cylindrical air outlet, an improved diffuser arrangement comprising: an elongated bubble diffuser having a molded plastic diffuser body formed integrally as a single molded piece and terminating in cylindrical opposite

In a waste water aeration system having a plastic fitting presenting at least one cylindrical air outlet, an improved diffuser arrangement comprising: an elongated bubble diffuser having a molded plastic diffuser body formed integrally as a single molded piece and terminating in cylindrical opposite ends, one of said ends fitting closely in said outlet of the fitting and being solvent welded thereto to connect the diffuser in a generally horizontal orientation in cantilever extension; a main section of said diffuser body located between said ends and occupying the majority of the length of the diffuser body, said main section having substantially flat opposite side walls oriented generally parallel to one another and a top wall connecting said side walls; a plurality of outlet openings in each of said side walls for discharging the air in said diffuser body into the waste water; a pair of smoothly and gradually tapered transition sections of said diffuser body smoothly connecting said main section with the respective ends thereof and providing transitions between the cylindrical ends and the flat side walls of the main section, said transition sections being integral with said opposite ends and said main section of the diffuser body and being devoid of abrupt cross-sectional size changes in said transitions; and a removable end cap for closing the end of the diffuser body opposite said one end thereof.