Patent US4207275A successfully refreshed from Google Patents.
US4207275A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing apparatus
Assignee: SPX Technologies Inc
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Filing: 1977-01-13
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Granted: 1980-06-10
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Expires: 1997-01-13
Abstract
Abstract An apparatus for mixing a liquid and a gas in a tank includes a means for circulating the liquid in the tank and a sparge ring for dispersing gas into the tank. The circulating means includes a plurality of blades extending downwardly from a bottom surface of a disc so that rotation of the blades creates a suction area. The sparge ring introduces gas into the tank in a direction that bypasses the suction area to prevent the gas from flowing into the suction area. Preferably, the sparge ring has a discharge means with a radius that is larger than the distance from the center of the disc to the outer tips of the blades.
Inventors
- 👤 James L. Stanton, Jr.
- 👤 William H. Kipple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:24
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/20; C02F3/205; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/231; B01F23/23105; B01F23/2312; B01F23/23123; B01F23/233; B01F23/2331; B01F23/23315; B01F23/2334; B01F27/00; B01F27/05; B01F27/11; B01F27/115; B01F27/1152; B01F23/23126; B01F23/231266; B01F23/2336; B01F23/23362; B01F27/111; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
172 words
In an apparatus for mixing a liquid with a gas including a tank with said liquid therein, a circulating means for creating a radial flow of said liquid to circulate said liquid in said tank, said circulating means comprising a rotatable shaft, a disc mounted on said shaft, and a plurality of blades extending downwardly from a bottom surface of said disc so that rotation of said plurality of blades creates a suction area, said suction area being the only suction area created by said circulating means, the improvement including: sparge ring means having a discharge means with a radius that is larger than the distance from the center of said disc to outer tip of said blades, said discharge means being axially positioned so as to introduce said gas into a zone extending axially downward from said disc a distance approximately equal to the height of said blades for introducing gas into said tank in a direction that bypasses said suction area to prevent gas from flowing into said suction area.
Claim 2
Dependent Claim
172 words
In an apparatus for mixing a liquid with a gas including a tank with said liquid therein, a circulating means for creating a radial flow of said liquid to circulate said liquid in said tank, said circulating means comprising a rotatable shaft, a disc mounted on said shaft, and a plurality of blades extending downwardly from a bottom surface of said disc so that rotation of said plurality of blades creates a suction area, said suction area being the only suction area created by said circulating means, the improvement including: sparge ring means having a discharge means with a radius that is larger than the distance from the center of said disc to outer tip of said blades, said discharge means being axially positioned so as to introduce said gas into a zone extending axially downward from said disc a distance approximately equal to the height of said blades for introducing gas into said tank in a direction that bypasses said suction area to prevent gas from flowing into said suction area.
Claim 3
Dependent Claim
36 words
The apparatus as defined in claim 1, wherein said sparge ring means is hollow in cross-section with a plurality of apertures in its top surface communicating with the hollow portion and functioning as said discharge means.
Claim 4
Dependent Claim
29 words
The apparatus as defined in claim 2, wherein the diameter of the sparge ring means at said apertures is between 1 and 1.5 times the diameter of the blades.
Claim 5
Dependent Claim
23 words
The apparatus as defined in claim 3, wherein said sparge ring means introduces said gas at the approximate axial midpoint of said blades.
Claim 6
Dependent Claim
151 words
In an apparatus for mixing a liquid with a gas including a tank with said liquid therein, a circulating means for creating a radial flow of said liquid to circulate said liquid in said tank, said circulating means comprising a rotatable shaft, a disc mounted on said shaft, and a plurality of blades extending downwardly from a bottom surface of said disc so that rotation of said plurality of blades creates a suction area, said suction area being the only suction area created by said circulating means, the improvement comprising: sparge ring means for introducing gas into said tank in a direction that bypasses said suction area to prevent gas from flowing into said suction area, said sparge ring means including discharge means being axially positioned so as to introduce said gas into a zone extending axially downward from said disc a distance approximately equal to the height of said blades.
Claim 7
Dependent Claim
151 words
In an apparatus for mixing a liquid with a gas including a tank with said liquid therein, a circulating means for creating a radial flow of said liquid to circulate said liquid in said tank, said circulating means comprising a rotatable shaft, a disc mounted on said shaft, and a plurality of blades extending downwardly from a bottom surface of said disc so that rotation of said plurality of blades creates a suction area, said suction area being the only suction area created by said circulating means, the improvement comprising: sparge ring means for introducing gas into said tank in a direction that bypasses said suction area to prevent gas from flowing into said suction area, said sparge ring means including discharge means being axially positioned so as to introduce said gas into a zone extending axially downward from said disc a distance approximately equal to the height of said blades.
Claim 8
Dependent Claim
36 words
The apparatus as defined in claim 5, wherein said sparge ring means is hollow in cross-section with a plurality of apertures in its top surface communicating with the hollow portion and functioning as said discharge means.
Claim 9
Dependent Claim
29 words
The apparatus as defined in claim 6, wherein the diameter of the sparge ring means at said apertures is between 1 and 1.5 times the diameter of the blades.
Claim 10
Dependent Claim
23 words
The apparatus as defined in claim 7, wherein said sparge ring means introduces said gas at the approximate axial midpoint of said blades.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-06-10 | 1983-12-10 | 1984-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-10 | 1987-12-10 | 1988-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-10 | 1991-12-10 | 1992-06-10 | $7700.00 | Window Closed / Lapsed |