US3655053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewage lift station
Assignee: Individual
•
Filing: 1971-02-16
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Granted: 1972-04-11
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Expires: 1991-02-16
Abstract
Abstract Sewage lift stations comprising a tank or well into which sewage flows through an inlet a suitable height above the bottom of the tank to provide for collection of a desired quantity of sewage after which it is automatically pumped out of the tank to a higher level from which it flows by gravity to the next lift station or to a treatment plant or other disposal system. A sewer gas deactivation and deodorizing unit comprising a suitable heating and burning unit utilizing, as the primary source of heat, a gas burner which may either simply heat the sewer gas as it is drawn from the tank by a blower and blown through the heating unit or which may premix the sewer gas and the air and gas supplied to the burner so that the mixed gas burns directly. Air is supplied to the tank from the atmosphere through a relatively small inlet pipe at a point adjacent to the inner wall of the tank through an inlet opening or nozzle extending substantially peripherally horizontally preferably about onefourth to one-third of the depth of the tank down from the top so as to direct air peripherally over the inner wall surface of the tank in order to produce a circulatory scavenging flow of mixed air and gas in the tank over the exposed part of this surface. The mixed air and gas is withdrawn from the tank through an exhaust pipe which is relatively much larger than the air inlet and which has intake preferably at about one half the depth of the tank and centrally thereof a predetermined distance above the maximum height of sewage in the tank. This assures a good mixture of the air and sewer gas before it is withdrawn and places the gas exhaust intake at or near the center of a vortex circulation of the mixed gas. Provision is made for stopping the exhaust blower under abnormal operating conditions, such as an excessive rise in the level of the collected sewage or nonfunction of the gas deactivator.
Inventors
- 👤 Adolph C Hugin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:30
CPC Classifications
E; E03; E03F; E03F5/00; E03F5/22
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
204 words
A sewage lift station comprising: a tank having a sewage inlet with space for gas above the sewage inlet; an outlet for sewage in the lower part of said tank; means forming an air inlet to said tank having an opening into said tank spaced from one-fifth to one-half the depth of said tank from the top thereof and above said sewage inlet, said air inlet means being formed and arranged to direct air peripherally adjacent to the inner wall of said tank in a direction for producing a circulatory scavenging flow of mixed air and gas in said tank and over the inner exposed surfaces thereof; means forming an exhaust for mixed air and gas and having an intake below said air inlet opening and spaced above said sewage inlet at a depth in said tank of from one-third to twothirds of the tank depth from the top thereof; means having a heating means for deactivating and deodorizing gas exhausted from said tank; and a blower connecting said exhaust means to said deactivating and deodorizing means for withdrawing the mixed air and gas from said tank and passing it into said deactivating and deodorizing means for heating it to oxidize and decompose it.
Claim 2
Dependent Claim
204 words
A sewage lift station comprising: a tank having a sewage inlet with space for gas above the sewage inlet; an outlet for sewage in the lower part of said tank; means forming an air inlet to said tank having an opening into said tank spaced from one-fifth to one-half the depth of said tank from the top thereof and above said sewage inlet, said air inlet means being formed and arranged to direct air peripherally adjacent to the inner wall of said tank in a direction for producing a circulatory scavenging flow of mixed air and gas in said tank and over the inner exposed surfaces thereof; means forming an exhaust for mixed air and gas and having an intake below said air inlet opening and spaced above said sewage inlet at a depth in said tank of from one-third to twothirds of the tank depth from the top thereof; means having a heating means for deactivating and deodorizing gas exhausted from said tank; and a blower connecting said exhaust means to said deactivating and deodorizing means for withdrawing the mixed air and gas from said tank and passing it into said deactivating and deodorizing means for heating it to oxidize and decompose it.
Claim 3
Dependent Claim
39 words
A sewage lift station as defined in claim 1 having means responsive to sewage at a predetermined level in said tank and below said gas exhaust means intake for pumping sewage out of said tank through said sewage outlet.
Claim 4
Dependent Claim
30 words
A sewage lift station as defined in claim 1 wherein said air inlet means opening is substantially one third of the tank depth down from the top of the tank.
Claim 5
Dependent Claim
29 words
A sewage lift station as defined in claim 1 wherein said gas exhaust means intake is substantially two-thirds of the tank depth down from the top of the tank.
Claim 6
Dependent Claim
24 words
A sewage lift station as defined in claim 4 wherein said exhaust gas intake is substantially along the central vertical axis of said tank.
Claim 7
Dependent Claim
73 words
A sewage lift station as defined in claim 4 wherein said tank is substantially circular in horizontal section and said air inlet means comprises a tubular air-directing section extending at the stated depth substantially circumferentially adjacent to the inner surface of the tank and having said opening adjacent to said inner surface for providing said circulatory air flow, and said gas exhaust intake is substantially along the central vertical axis of said tank.
Claim 8
Dependent Claim
58 words
A sewage lift station as defined in claim 1 wherein said tank is substantially circular in horizontal section and said air inlet means comprises a tubular air-directing section extending at the stated depth substantially circumferentially adjacent to the inner surface of the tank and has said opening adjacent to said inner surface for producing said circulatory air flow.
Claim 9
Dependent Claim
24 words
A sewage lift station as defined in claim 7 wherein said gas exhaust intake is substantially along the central vertical axis of said tank.
Claim 10
Dependent Claim
120 words
A sewage lift station as defined in claim 1 wherein said gas exhaust intake is substantially along the central vertical axis of said tank, said air inlet means comprises a tubular air-directing section extending at the stated depth substantially peripherally adjacent to the inner surface of the tank and having an opening adjacent to said inner surface for providing said circulatory air flow, said air directing section having a nozzle forming said opening and comprising an eduction tube and an air inlet tube, and a bleeder connection from tHe exhaust side of said blower to said eduction tube for educting air through said inlet means into said tank to produce a vortex circulatory air flow therefrom to said exhaust intake.
Claim 11
Dependent Claim
49 words
A sewage lift station as defined in claim 1 wherein said heating means comprises a burner connected to said blower and having a fuel supply to said burner whereby said fuel is mixed with the exhaust drawn from said tank by said blower and burned by the burner flame.
Claim 12
Dependent Claim
44 words
A sewage lift station as defined in claim 1 wherein said heating means comprises a fuel burner, means for supplying fuel thereto, a baffle for directing exhaust from said blower over said burner, and an outlet for discharging the burned gases from said burner.
Claim 13
Dependent Claim
33 words
A sewage lift station as defined in claim 1 wherein said heating means comprises a plurality of fuel burning elements, and at least one sewer gas diffusing element between said fuel burning elements.
Claim 14
Dependent Claim
39 words
A sewage lift station as defined in claim 12 wherein said fuel burning elements comprise concentric ring-type burner elements, and said sewer gas diffusing element comprises a substantially concentric ring-type element with perforations forming outlets for the sewer gas.
Claim 15
Dependent Claim
34 words
A sewage lift station as defined in claim 12 wherein said fuel burning element comprises digital burner elements, and said sewer gas diffusing element comprises a digital element interdigitated with said fuel burning elements.
Claim 16
Dependent Claim
77 words
A sewage lift station as defined in claim 1 wherein said heating means comprises a plurality of digital fuel burning elements, a plurality of digital sewer gas diffusing elements interdigitated with said fuel burning elements with the latter on both outer lateral sides of each sewer gas element, and a means on each inner digital fuel burning element comprising a fuel flame spreader for spreading the flame transversely of said element toward the adjacent gas diffusing elements.
Claim 17
Dependent Claim
28 words
A sewage lift station as defined in claim 1 having means operable in response to sewage level in said tank above a predetermined level for stopping said blower.
Claim 18
Dependent Claim
21 words
A sewage lift station as defined in claim 16 having means for indicating operation of said means for stopping said blower.
Claim 19
Dependent Claim
24 words
A sewage lift station as defined in claim 1 having means operable in response to non-heating of said heating means for stopping said blower.
Claim 20
Dependent Claim
20 words
A sewage lift station as defined in claim 18 having means for rendering inoperative said non-heating response blower stopping means.
Claim 21
Dependent Claim
21 words
A sewage lift station as defined in claim 18 having means for indicating operation of said means for stopping said blower.
References Cited (Backward Citations)
US3337455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |