Patent US3650436A successfully refreshed from Google Patents.
US3650436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic conveyor and blender
Assignee: Combustion Engineering Inc
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Filing: 1970-01-19
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Granted: 1972-03-21
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Expires: 1990-01-19
Abstract
Abstract This disclosure relates to a system for fluidizing and transporting particulate material. The particulate material is fed into a fluidizing container from a hopper through two independently operated, serially arranged valves. The valves are controlled such that the closest valve to the container is opened first and closed last, after a charge has been delivered to the container to prevent flow of pressurized air through the hopper. Special blending nozzles are disclosed for an optional blending operation during the fluidizing and transporting process, particularly of certain materials. The outlet conduit from the container has an isolating valve, upstream from a fluid conveyor means, to permit the container to be filled with a new charge while the previous charge is being transported to its destination. Special control means are provided to operate the valves in proper timed sequence to minimize the time cycle for each charge.
Inventors
- 👤 Edgar A Barber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:49
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/34; B65G53/40; B65G53/46; B65G53/4691
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
264 words
In a system for fluidizing and transporting particulate materials, said system comprising: a fluidizing container having an inlet opening and an outlet opening; supply means communicating with said inlet opening for supplying particulate material thereto; means for fluidizing particulate material within said container; an outlet conduit communicating with said outlet opening; conveyor means in said outlet conduit for conveying fluidized particulate materials through said outlet conduit; and a vent conduit communicating with said fluidizing container; the improvement which comprises: first and second valve means serially arranged between said supply means and said fluidizing container, each of said first and second valve means adapted to close off the flow of material between said supply means and said fluidizing container; outlet valve means in said outlet conduit between said conveyor means and said outlet opening; vent valve means in said vent conduit; first control means operably connected to said vent valve means and to said outlet valve means for closing said vent valve means when said outlet valve means is open and for opening said vent valve means when said outlet valve means is closed; second control means for said first and second valve means for closing said valves in timed sequence whereby the valve closest to said supply means closes first and the valve nearest said container means closes thereafter; and means operably connecting said first and said second control means to actuate said first control means to close said vent valve in said vent conduit and open said outlet valve in said outlet conduit after said first and second valves have been sequentially closed.
Claim 2
Dependent Claim
264 words
In a system for fluidizing and transporting particulate materials, said system comprising: a fluidizing container having an inlet opening and an outlet opening; supply means communicating with said inlet opening for supplying particulate material thereto; means for fluidizing particulate material within said container; an outlet conduit communicating with said outlet opening; conveyor means in said outlet conduit for conveying fluidized particulate materials through said outlet conduit; and a vent conduit communicating with said fluidizing container; the improvement which comprises: first and second valve means serially arranged between said supply means and said fluidizing container, each of said first and second valve means adapted to close off the flow of material between said supply means and said fluidizing container; outlet valve means in said outlet conduit between said conveyor means and said outlet opening; vent valve means in said vent conduit; first control means operably connected to said vent valve means and to said outlet valve means for closing said vent valve means when said outlet valve means is open and for opening said vent valve means when said outlet valve means is closed; second control means for said first and second valve means for closing said valves in timed sequence whereby the valve closest to said supply means closes first and the valve nearest said container means closes thereafter; and means operably connecting said first and said second control means to actuate said first control means to close said vent valve in said vent conduit and open said outlet valve in said outlet conduit after said first and second valves have been sequentially closed.
Claim 3
Dependent Claim
55 words
A system for fluidizing and transporting particulate material according to claim 1 further comprising a time delay means between said first control means and said second control means for closing said vent conduit valve means and opening said outlet conduit valve means a predetermined time after the closing of said first and second valve means.
Claim 4
Dependent Claim
53 words
A system for fluidizing and transporting particulate material according to claim 2 further comprising third control means to initiate operation of said fluidizing means, said third control means being operably associated with said first and second control means so as to commence operation of said fluidizing means after closing of said vent valve.
Claim 5
Dependent Claim
45 words
A system for fluidizing and transporting particulate material according to claim 2 further comprising a pressure sensing means to sense the drop in pressure within said fluidizing container and means overriding said time delay means until after a predetermined pressure drop in said fluidizing container.
Claim 6
Dependent Claim
45 words
A system for fluidizing and transporting particulate material according to claim 1 further comprising fluidizing control means operably associated with said second valve control means to initiate operation of said fluidizing means in timed relationship subsequent to the closing of said first and second valves.
Claim 7
Dependent Claim
41 words
A system for fluidizing and transporting particulate material according to claim 1 further comprising blending nozzles arranged about said fluidizing container to impart a circular blending action to particulate material therein, and means to supply fluid pressure to said blending nozzles.
Claim 8
Dependent Claim
54 words
A system for fluidizing and transporting particulate material according to claim 6 wherein said nozzles have an opening for fluidized pressure which is directed downwardly and circumferentially with the line of fluid from said nozzles forming an angle of less than 90 degrees with a radial line from the center of said fluidizing container.
Claim 9
Dependent Claim
32 words
A system for fluidizing and conveying particulate material according to claim 11 wherein said angle of said fluid flow line from said nozzles is about 75* with respect to said radial line.
Claim 10
Dependent Claim
52 words
A system for fluidizing and conveying particulate material according to claim 10 further comprising means operably connected to said fluidizing means and to said fluid supply means for said blending nozzles to commence flow of said fluid to said nozzles and then to commence operation of said fluidizing means in timed sequence.
Claim 11
Independent Claim
130 words
A system for fluidizing, blending and transporting particulate materials, said system comprising: a fluidizing container having an inlet opening, an outlet opening, and a vent; means communicating with said inlet opening for supplying particulate material thereto; means for fluidizing particulate material within said container; means to supply fluid pressure to said fluidizing means; blending nozzles arranged about said fluidizing container to impart a circular blending action to particulate material therein; means to supply pressurized fluid to said blending nozzles; and sequential control means operably connected to said vent, to said fluid supply means for said blending nozzles and to said fluidizing means to first commence flow of said fluid pressure to said nozzles, then to close said vent and then to commence operation of said fluidizing means in timed sequence.
Claim 12
Independent Claim
130 words
A system for fluidizing, blending and transporting particulate materials, said system comprising: a fluidizing container having an inlet opening, an outlet opening, and a vent; means communicating with said inlet opening for supplying particulate material thereto; means for fluidizing particulate material within said container; means to supply fluid pressure to said fluidizing means; blending nozzles arranged about said fluidizing container to impart a circular blending action to particulate material therein; means to supply pressurized fluid to said blending nozzles; and sequential control means operably connected to said vent, to said fluid supply means for said blending nozzles and to said fluidizing means to first commence flow of said fluid pressure to said nozzles, then to close said vent and then to commence operation of said fluidizing means in timed sequence.
Claim 13
Dependent Claim
71 words
A system for fluidizing and transporting particulate material according to claim 10 further comprising an outlet conduit communicating with said outlet opening; means in said outlet conduit for conveying fluidized particulate material through said outlet conduit; and valve means in said outlet conduit between said conveying means and said outlet opening to selectively close off said outlet conduit while conveying fluidized particulate material through said outlet conduit downstream of said valve.
Claim 14
Dependent Claim
78 words
A system for fluidizing and transporting particulate material according to claim 11 further comprising a vent conduit communicating with said fluidizing container; a valve means in said vent conduit; and first control means operably connected to said vent conduit valve means and to said outlet conduit valve means for closing said vent conduit means when said outlet conduit valve means is open, and for opening said vent conduit valve means when said outlet conduit valve means is closed.
Claim 15
Dependent Claim
60 words
A system for fluidizing and conveying particulate material according to claim 10 wherein said nozzles have an outlet opening for said fluid pressure so as to direct said fluid pressure downwardly and circumferentially with the line of fluid from said nozzles forming an angle of less than 90 degrees with a radial line from the center of said fluidizing container.
Claim 16
Dependent Claim
32 words
A system for fluidizing and conveying particulate material according to claim 13 wherein said angle of said fluid flow from said nozzles is about 75 degrees with respect to said radial line.
Claim 17
Dependent Claim
24 words
The apparatus recited in claim 13 wherein said nozzles are vertically adjustable to permit the distance they project into said vessel to be adjusted.
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) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |