Patent US3797812A successfully refreshed from Google Patents.
US3797812A
Expired / Lapsed
US
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Waste gas flow system for metal-treating apparatus
Assignee: Waagner Biro AG
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Filing: 1972-09-06
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Granted: 1974-03-19
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Expires: 1992-09-06
Abstract
Abstract A metal-treating apparatus which includes a vessel in which metal is refined and a waste-gas conduit which receives gas issuing from the vessel. Between the latter conduit and the top end of the vessel is a ring assembly which is movable along the end of the waste-gas conduit adjacent the vessel between a closed position engaging the vessel and an open position spaced therefrom. A structure which surrounds the waste-gas conduit defines a chamber in which the top end of the ring assembly is located even when the latter is in its closed position, and in this closed position the ring assembly defines with this latter structure and with the waste-gas conduit a pair of gaps through which any waste gas which seeks to escape while flowing into the waste-gas conduit must flow while changing its direction at least twice.
Inventors
- 👤 S Ivessa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:10
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/38; C21C5/40; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
263 words
In a metal-treating apparatus, tiltable vessel means having a hollow interior in which metal is treated as by being refined therein, said tiltable vessel means having a top open end through which waste gas issues during treatment of metal in said vessel means and said vessel means terminating at said top open end thereof in a top end surface, waste-gas conduit means aligned with and spaced from said top open end of said vessel means for receiving the waste gas issuing therefrom and for conducting the waste gas to an installation such as a gas-cooling and gascleaning installation, annular means surrounding said waste-gas conduit means at an end region of the latter which is adjacent said vessel means for defining a chamber which surrounds said waste-gas conduit means at said end region thereof, and ring means also surrounding said waste-gas conduit means at said end region thereof and having an upper open position situated within said chamber and spaced from said top end surface of said vessel meanS, said ring means having a lower closed position engaging said top end surface of said vessel means and extending between the latter and said waste-gas conduit means for closing the space between said vessel means and waste-gas conduit means, said ring means when in said lower closed position thereof having an upper end portion which extends into said chamber and which defines with said end region of said waste-gas conduit means and with said annular means a pair of gaps through which any escaping waste gas must flow while changing its direction at least twice.
Claim 2
Dependent Claim
263 words
In a metal-treating apparatus, tiltable vessel means having a hollow interior in which metal is treated as by being refined therein, said tiltable vessel means having a top open end through which waste gas issues during treatment of metal in said vessel means and said vessel means terminating at said top open end thereof in a top end surface, waste-gas conduit means aligned with and spaced from said top open end of said vessel means for receiving the waste gas issuing therefrom and for conducting the waste gas to an installation such as a gas-cooling and gascleaning installation, annular means surrounding said waste-gas conduit means at an end region of the latter which is adjacent said vessel means for defining a chamber which surrounds said waste-gas conduit means at said end region thereof, and ring means also surrounding said waste-gas conduit means at said end region thereof and having an upper open position situated within said chamber and spaced from said top end surface of said vessel meanS, said ring means having a lower closed position engaging said top end surface of said vessel means and extending between the latter and said waste-gas conduit means for closing the space between said vessel means and waste-gas conduit means, said ring means when in said lower closed position thereof having an upper end portion which extends into said chamber and which defines with said end region of said waste-gas conduit means and with said annular means a pair of gaps through which any escaping waste gas must flow while changing its direction at least twice.
Claim 3
Dependent Claim
69 words
The combination of claim 1 and wherein said annular means has an outer wall surrounding said ring means when the latter is in its closed position for defining an outer one of said pair of gaps therewith while said ring means has a portion surrounding said waste-gas conduit means when said ring means is in said closed position thereof for defining an inner one of said pair of gaps.
Claim 4
Dependent Claim
44 words
The combination of claim 1 and wherein said annular means has a lower end region surrounding and spaced from said waste-gas conduit means for providing said chamber with an open end at that part of said chamber which is nearest to said vessel means.
Claim 5
Dependent Claim
27 words
The combination of claim 1 and wherein said waste-gas conduit means terminates at said end region thereof in a tapered portion which diverges toward said vessel means.
Claim 6
Dependent Claim
30 words
The combination of claim 1 and wherein said ring means has a tapered configuration which converges in the direction of waste-gas flow from said vessel means into said conduit means.
Claim 7
Dependent Claim
43 words
The combination of claim 1 and wherein said vessel means has at said top end thereof a discharge opening of a given size, and said waste-gas conduit means having an interior cross section which is of a smaller size than said discharge opening.
Claim 8
Dependent Claim
32 words
The combination of claim 6 and wherein the interior cross section of said waste-gas conduit means is approximately 20 percent smaller than the size of said discharge opening of said vessel means.
Claim 9
Dependent Claim
26 words
The combination of claim 1 and wherein said waste-gas conduit means has an inner surface defined by cooling tubes which form part of a gas-cooling installation.
Claim 10
Dependent Claim
23 words
The combination of claim 1 and wherein said ring means consists of tubular components through which a cooling fluid is adapted to flow.
Claim 11
Dependent Claim
27 words
The combination of claim 9 and wherein a low-pressure cooling circuit means communicates with said tubular components of said ring means for directing said cooling fluid therethrough.
Claim 12
Dependent Claim
87 words
The combination of claim 9 and wherein a moving means is operatively connected to said ring means for displacing the latter between said lower closed position thereof and said upper open position thereof, said moving means including shifting rods operatively connected to said ring means for shifting the latter between said positions thereof, and said shifting rods being tubular and communicating with said tubular components at the interior thereof for directing the cooling medium to and from the interior of said tubular components of said rings means.
Claim 13
Dependent Claim
81 words
The combination of claim 11 and wherein said annular means includes an annular end wall distant from said vessel means and formed with openings through which said shifting rods respectively extend, and a plurality of sealing means surrounding said shifting rods at said openings of said end wall of said annular means for sealing the interior of said chamber from the other atmosphere at the location where said rods extend through said openings of said end wall of said annular means.
Claim 14
Dependent Claim
49 words
The combination of claim 12 and wherein each of said sealing means includes a sealing member surrounding the shifting rod with which it coacts and connected to said end wall of said annular means for movement in the plane of said end wall while remaining in sealing engagement therewith.
Claim 15
Dependent Claim
46 words
The combination of claim 1 and wherein said ring means includes at opposed ends thereof a pair of tubular headers and between said tubular headers a pluraLity of elongated springy tubes situated one next to the other and each connected to and communicating with said headers.
Claim 16
Dependent Claim
29 words
The combination of claim 1 and wherein said annular means is fixed to said waste-gas conduit means and has an outer cylindrical wall consisting of a plurality of tubes.
Claim 17
Dependent Claim
128 words
The combination of claim 1 and wherein a shifting means is operatively connected to said waste-gas conduit means for shifting the latter with respect to said vessel means while said waste-gas conduit means coacts with said ring means for guiding the latter for movement between said open and closed positions thereof, and said ring means when in said closed position thereof coacting with said waste-gas conduit means for guiding waste gas issuing from said vessel means through said waste-gas conduit means without burning in the latter, and combustion chamber means communicating with said waste-gas conduit means for receiving waste gas therefrom, said combustion chamber means carrying a valve means through which combustion air is admitted for burning the waste gas when the latter reaches said combustion chambers means.
References Cited (Backward Citations)
US3205810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |