LIQUID SPRAY DEVICE WITH FIXED AND ROTATABLE DIFFUSERS

• US 3,735,926 A
• Filed: 05/27/1971
• Issued: 05/29/1973
• Est. Priority Date: 05/27/1971
• Status: Expired due to Term

• Current Assignee: Aqua-Aerobic Systems Incorporated (Metawater Company Limited)
• Original Assignee: Richard B. Ravitts
• Inventors: Ravitts, Richard B.
• Primary Examiner(s): Ward, Jr., Robert S.
• Application Number:
  US05/147,472
• Time in Patent Office: 733 Days
• Field of Search: 239/16,17,18,22,23,214,215,219,220,221,222.11,223,224,500,521,380 261/34R,36R,99,120
• US Class Current: 239/16
• CPC Class Codes: B01F 23/23421 the stirrers rotating about a vertical axis
• CPC Class Codes: B01F 27/80 with stirrers rotating about a substantially vertical axis
• CPC Class Codes: B01F 33/503 Floating mixing devices
• CPC Class Codes: C02F 3/16 the aerator having a vertical axis
• CPC Class Codes: Y02W 10/10 Biological treatment of water, waste water, or sewage

Abstract

A floating aerator includes an axial flow impeller rotated by an electric motor and disposed within a tubular throat to pump a column of water from a pond upwardly through the throat and against a stationary or fixed diffuser positioned above the upper outlet of the throat. The fixed diffuser divides the column of water into a central core which passes through a neck portion of the diffuser and an outer sleeve which is deflected outwardly of the throat by an annular baffle encircling the upper end of the neck. The baffle extends outwardly from the neck in a generally horizontal direction to guide the deflected water in a relatively flat trajectory to cause the water to strike the surface of the pond with considerable force. A rotatable diffuser positioned above the fixed diffuser coacts therewith to sling the central core of water outwardly relative to the throat in a path above and converging downwardly into the water deflected by the baffle.

Claims

1. A liquid spray device, adapted for use as an aerator comprising:

conduit means adapted for immersion in a body of liquid at its lower end and defining an opening at its upper end for the discharge of liquid pumped upwardly therethrough, power driven impeller means rotatable within said conduit means to pump a column of liquid upwardly through the conduit means for discharge from the upper open end thereof, stationary diffuser means fixedly mounted above an outer radial portion of said impeller and adjacent the outer upper end of said conduit for dividing and deflecting an outer portion of the rising column of liquid outwardly, and rotatable diffuser means positioned above the inner radial portion of said impeller for deflecting an inner portion of the rising column of liquid and for slinging such inner liquid portion outwardly.

2. The liquid spray device of claim 1 in which said conduit means is tubular, said stationary diffuser means divides the rising column of liquid into a central core and an outer sleeve, and said sTationary diffuser means is positioned for outwardly deflecting the outer sleeve of liquid, and said rotatable slinger means outwardly deflects the central core of liquid.

3. The spray device as defined in claim 2 wherein said rotatable diffuser means is positioned with its lower portion projecting into the neck of an opening in said stationary diffuser means and with its upper portion extending above said stationary diffuser means.

4. The spray device as defined in claim 1 in which said rotatable diffuser comprises a generally concave outer surface curving upwardly for outwardly directing the liquid impinging against its surface.

5. The spray device as defined in claim 1 in which said stationary diffuser means comprises inner wall portion and outer baffle portion, said inner wall portion defining a surface spaced from the outer surface of said rotatable diffuser means.

6. The spray device as defined in claim 1 in which said stationary diffuser means comprises a baffle portion having a substantially horizontal side for imparting a substantially flat trajectory to the liquid.

7. The spray device as defined in claim 1 in which the distance between said stationary and rotatable diffuser means is adjustable relative to the other for adjustment of the relative sizes of the two portions of liquid.

8. The spray device as defined in claim 1 in which said rotatable diffuser means is vertically adjustable at various selected elevations relative to said stationary diffuser means.