초록 ▼

A diffuser for aerating a fluid, and particularly for aeration in waste water treatment tanks, is formed in an elongate configuration by manufacturing a base plate from an extrusion cut to the desired length. A perforated elastomeric membrane is secured to the base plate by pressing sealing strips a

A diffuser for aerating a fluid, and particularly for aeration in waste water treatment tanks, is formed in an elongate configuration by manufacturing a base plate from an extrusion cut to the desired length. A perforated elastomeric membrane is secured to the base plate by pressing sealing strips along the elongate edges of the membrane into corresponding grooves formed in the base plate extrusion. The ends of the membrane are sealed to the base plate by end strips or clamps. Air is introduced through apertures in the base plate causing the membrane to inflate away from the base plate forming an interior compartment for the passage of air along the diffuser. Apparatus for securing the diffuser to a horizontal header pipe is also described.

대표청구항 ▼

1. A diffuser for aerating a fluid comprising,a) an extruded elongated base member for securement to an air supply pipe, said base having first opposite sides and first opposite ends, and an opening between said first opposite sides and said first opposite ends, b) an extruded elongated groove at ea

1. A diffuser for aerating a fluid comprising,a) an extruded elongated base member for securement to an air supply pipe, said base having first opposite sides and first opposite ends, and an opening between said first opposite sides and said first opposite ends, b) an extruded elongated groove at each said first opposite side of said base member, c) an elongated elastomeric membrane covering a surface of the elongated base member and having second opposite sides corresponding to the first opposite sides of said base, and second opposite ends corresponding to the first opposite ends of said base, said elongated elastomeric membrane having an outside surface and an inside surface, said inside surface being formed with elongated projections substantially complementary in cross-section with the cross-section of said elongated grooves to permit a leak-tight sealing engagement between said elongated projections and said elongated grooves whereby an interior compartment is defined between the elongated base member and the elongated elastomeric membrane for receiving a flow of gas through the opening in said base such that the flow of gas into the interior compartment can permeate through the elongated elastomeric membrane to aerate fluid outside the outside face of the elongated elastomeric membrane.