Air aspirator-mixer

• US 20040113288A1
• Filed: 12/12/2002
• Published: 06/17/2004
• Est. Priority Date: 12/11/2001
• Status: Active Grant

• Current Assignee: Jan A. Korzeniowski
• Original Assignee: Jan A. Korzeniowski
• Inventors: Korzeniowski, Jan A.
• Granted Patent: US 6,969,052 B2
• Time in Patent Office: Days
• US Class Current: 261/76
• CPC Class Codes: B01F 23/2326 adding the flowing main component by suction means, e.g. using an ejector
• CPC Class Codes: B01F 25/312 with Venturi elements; Details thereof
• CPC Class Codes: B01F 25/3121 with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
• CPC Class Codes: B01F 25/31242 the main flow being injected in the central area of the venturi, creating an aspiration in the circumferential part of the conduit B01F25/31243 takes precedence
• CPC Class Codes: C02F 1/74 with air aeration of stretches of water C02F7/00
• CPC Class Codes: C02F 3/1294 "Venturi" aeration means
• CPC Class Codes: Y02W 10/10 Biological treatment of water, waste water, or sewage
• CPC Class Codes: Y10S 261/56 Variable venturi

Abstract

A single port venturi device is provided for aeration of wastewaters containing suspended solids. The device has a non-obstructive design which prevents attachment or accumulation of suspended solids, and promotes even air distribution for efficient aspiration of air and mixing of air and wastewater. The device has provisions for adjustment of the venturi throat size, for protection of the throat from wearing out, for enhancing air and wastewater mixing capabilities, and for flashing of the solids accumulated in the air entrance.

Claims

1. An air-aspirator-mixer having a venturi nozzle, a carrier fluid inlet, an air inlet chamber, and a fluid/air mixture outlet

2. An air aspirator-mixer of claim 1 wherein said venturi nozzle comprises an inlet constricting portion and an expanding outlet portion, both connected by a short throat, and a removable inlet constricting liner.

3. An air aspirator-mixer of claim 2 wherein said venturi expanding outlet portion comprises air inlet ports located immediately next to said throat.

4. An air aspirator-mixer of claim 2 wherein said removable inlet constricting liner is provided to obtain different sizes of the throat without changing the entire venturi nozzle and to protect the venturi throat from wearing out.

5. An air aspirator-mixer of claim 1 wherein said air inlet chamber comprises air inlet port, liquid or air flashing connection outlet and an annulus.

6. An air aspirator-mixer of claim 5 wherein said air inlet port is also used as an inlet for liquid or air for flashing of said annulus.

7. An air aspirator-mixer of claim 1 wherein said carrier fluid inlet comprises smaller cylindrical inlet portion, middle expanding inlet portion, and longer cylindrical outlet portion connected together.

8. An air aspirator-mixer of claim 7 wherein said expanding carrier fluid inlet portion contains an outlet port for instrument or flashing connection to the air inlet port.

9. An air aspirator-mixer of claim 7 wherein said longer cylindrical portion contains spiral mixer having smooth inlet and outlet, without protruding parts which could promote attachment or settlement of suspended solids contained in the carrier fluid and restricting flow of the carrier fluid.

10. An air aspirator-mixer of claim 1 wherein said fluid/air mixture outlet comprises larger cylindrical inlet portion, middle constricting portion and smaller cylindrical outlet portion.

11. An air aspirator-mixer of claim 10 wherein said large cylindrical inlet portion contains spiral mixer having smooth inlet and outlet, without protruding parts which could promote attachment or settlement of suspended solids contained in the carrier fluid and restricting flow of the carrier fluid.

12. An air aspirator-mixer of claim 10 wherein said smaller cylindrical outlet portion contains a port for connection of instrument, drain valve or flashing outlet connection.