US3824935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drying and incinerating furnaces
Assignee: Yamato Sanko Manufacturing Co Ltd
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Filing: 1973-05-10
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Granted: 1974-07-23
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Expires: 1993-05-10
Abstract
Abstract A drying and incinerating furnace containing means for effecting desiccation and incineration, in a single process, of a muddy material such as an activated sludge wherein said method is treated from the inlet side or the peripheral portion on the hearth to the outlet side or the central part of the hearth. Airblowing nozzles and raking paddles are provided on rotary pipes for vortically blowing and transporting the material in the furnace.
Inventors
- 👤 Y Yamato
- 👤 K Terada
- 👤 B Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:07
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/24; F23G5/28
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
164 words
An apparatus for drying and incinerating materials which comprises a chamber containing the material to be treated, inlet means for supplying the material to be treated to the chamber, outlet means for removing the treated material from the chamber, said outlet means including an outlet port centrally disposed in the bottom of said chamber, treating means provided in said chamber for blowing the material deposited on the bottom of said chamber and transporting it vortically toward said outlet port, said treating means comprising a rotary tube mounted for rotation and extending vertically through the outlet port, said rotary tube being provided with a plurality of radially extending branch pipes, said branch pipes containing a plurality of nozzles and blades provided on the underside thereof, air-supply means communicating with said rotary tube and drive means communicating with said rotary tube for rotating the same, burner means communicating with the chamber and gas exhaust means associated with said chamber for removing the gases of combustion therefrom.
Claim 2
Independent Claim
164 words
An apparatus for drying and incinerating materials which comprises a chamber containing the material to be treated, inlet means for supplying the material to be treated to the chamber, outlet means for removing the treated material from the chamber, said outlet means including an outlet port centrally disposed in the bottom of said chamber, treating means provided in said chamber for blowing the material deposited on the bottom of said chamber and transporting it vortically toward said outlet port, said treating means comprising a rotary tube mounted for rotation and extending vertically through the outlet port, said rotary tube being provided with a plurality of radially extending branch pipes, said branch pipes containing a plurality of nozzles and blades provided on the underside thereof, air-supply means communicating with said rotary tube and drive means communicating with said rotary tube for rotating the same, burner means communicating with the chamber and gas exhaust means associated with said chamber for removing the gases of combustion therefrom.
Claim 3
Dependent Claim
47 words
The apparatus of claim 1, wherein said chamber has vertical, cylindrical walls and a circular hearth forming the bottom of said chamber, the centers of said cylindrical walls and said circular hearth being aligned with each other and said outlet port being concentrically disposed in said hearth.
Claim 4
Dependent Claim
12 words
The apparatus of claim 1, wherein said air-supply means includes fan means.
Claim 5
Dependent Claim
31 words
The apparatus of claim 1, wherein said drive means includes a geared motor means which is adapted to engage gear transmission means associated with the bottom portion of the rotary tube.
Claim 6
Dependent Claim
44 words
The apparauts of claim 1, wherein the rotary tube is concentrically disposed within said outlet port, the branch pipes internally communicating with the top of the rotary tube inside the chamber, and the bottom of said rotary tube internally communicating with the air-supply means.
Claim 7
Dependent Claim
32 words
The apparatus of claim 1, wherein each nozzle has an axis directed toward the surface of said chamber bottom with a predetermined angle inclined toward the rotating direction of said branch pipe.
Claim 8
Dependent Claim
47 words
The apparatus of claim 1, wherein each blade extends nearly to the surface of said chamber bottom, said blade having a face inclined toward the rotating direction of said branch pipe with respect to the axis of said branch pipe for centripetally and vortical transporting the material.
Claim 9
Dependent Claim
36 words
The apparatus of claim 1, wherein said inlet means comprises a material-supply tube disposed in said cylindrical wall and screw conveyor means provided therein for depositing the material on the peripheral portion of said chamber bottom.
Claim 10
Dependent Claim
46 words
The apparatus of claim 1, wherein said outlet means comprises a water system including a bath for receiving the treated material dropped through said outlet port, a water supply pipe connected to said bath, and a discharge pipe for discharging the treated material mixed with water.
Claim 11
Dependent Claim
30 words
The apparatus of claim 1, wherein said outlet means comprises a chute system disposed under said outlet port for guiding the treated material to a predetermined location outside the chamber.
Claim 12
Dependent Claim
46 words
The apparatus of claim 1, wherein said burner means is disposed in the chamber wall with its axis being directed tangentially to an imaginary circle spaced at a predetermined distance from the center of said cylindrical wall and slanted to the surface of said chamber bottom.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |