Patent US4098662A successfully refreshed from Google Patents.
Patent US3762858A successfully refreshed from Google Patents.
US3762858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature scrap cleaning conveyor
Assignee: American Pulverizer Co
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Filing: 1971-12-16
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Granted: 1973-10-02
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Expires: 1991-12-16
Abstract
Abstract A high temperature scrap cleaning conveyor includes a conveyor comprised of a conveying deck, a mechanism for oscillating the deck, and a water-filled pan beneath the deck. Shredded scrap metal contaminated primarily with paint, oil and grease is deposited on one end of the conveying deck and the oscillating motion of the deck causes the scrap to move toward the deck''s opposite end, tumbling and turning as it does. Water is circulated through the pan and this water not only insulates the oscillating mechanism from the heated conveying deck, but it also cools the conveying deck, since the oscillations cause the water to splash against the underside of the deck. A framework supports an insulated closure which extends over and along the sides of the conveying deck, and this closure defines a fire chamber in which a series of transversely extending burners are located. The burners produce downwardly directed flames which not only raise the temperature of air within the fire chamber, but also impinge on the scrap carried on the conveying deck and burn the contaminants from the scrap. Since the scrap tumbles as it advances, all surfaces thereof are presented toward the flame. An airstream is created within the fire chamber by a fan, and the air for this airstream is derived from air gaps existing between the sides of the conveying deck and side curtains which form the sides of the insulated closure. These side curtains may be adjusted inwardly and outwardly to control the size of the air gaps and this in turn controls the air velocity through the fire chamber. The curtains may be removed altogether to gain access to the burners and conveying deck. At the discharge end of the oscillating conveyor the airstream enters a smoke elimination tower having a high velocity burner at its entrance for raising the temperature of the airstream sufficiently to consume smoke, fumes, and most entrained material. The smoke elimination tower is connected with a cooling chamber where a high pressure water mist is sprayed into the airstream for cooling the airstream and for removing the larger particulates therefrom. Downstream from the cooling chamber, the airstream flows through a plate-type impingement scrubber where more particulates are removed, and thence into a cyclone collector where the airstream loses velocity and the remaining particulates drop out. The drain water from the cooling chamber and scrubber flows into the cyclone collector where it flushes the particulates dropped therein. The water discharges from the collector into a settling tank for clarification and is recycled by a pump through the water pan of the oscillating conveyor. Only fresh water is supplied to the nozzles of the cooling chamber and to the scrubber. The fan is located downstream from the cyclone colector and discharges the airstream into the atmosphere in a purified condition. The foregoing units are interlocked and no one unit is operated independently.
Inventors
- 👤 J Torrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:26
CPC Classifications
C; C23; C23G; C23G5/00; C21; C21C; C21C5/00; C21C5/56; C21C5/562; C21C5/565; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10S; Y10S266/00; Y10S266/901
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
215 words
A high temperature cleaning apparatus for removing surface contaminants from metal segments, said apparatus comprising: a conveyor including a conveying deck having a receiving end onto which contaminanted metal segments are placed and a discharge end, and drive means for imparting an oscillatory motion to the conveying deck, the oscillatory motion being such that the metal segments move on the conveying deck from the receiving end to the discharge end, tumbling as they do so that different surfaces of the segments are presented upwardly as the segments move along the deck; closure means extended over the conveying deck and together with the deck defining a fire chamber above the deck, the upwardly presented surface of the deck being presented toward and exposed to the fire chamber; burners in the fire chamber and positioned such that flames issuing therefrom are directed downwardly and impinge against the conveying deck and the metal segments thereon whereby surface contaminants are burned from the metal segments; ducting connected with the closure means and communicating with the fire chamber; and fan means for inducing an airstream in the ducting and through the fire chamber so that smoke and particulates resulting from the combustion of the contaminants will become entrained in the airstream and will leave the fire chamber through the ducting.
Claim 2
Dependent Claim
215 words
A high temperature cleaning apparatus for removing surface contaminants from metal segments, said apparatus comprising: a conveyor including a conveying deck having a receiving end onto which contaminanted metal segments are placed and a discharge end, and drive means for imparting an oscillatory motion to the conveying deck, the oscillatory motion being such that the metal segments move on the conveying deck from the receiving end to the discharge end, tumbling as they do so that different surfaces of the segments are presented upwardly as the segments move along the deck; closure means extended over the conveying deck and together with the deck defining a fire chamber above the deck, the upwardly presented surface of the deck being presented toward and exposed to the fire chamber; burners in the fire chamber and positioned such that flames issuing therefrom are directed downwardly and impinge against the conveying deck and the metal segments thereon whereby surface contaminants are burned from the metal segments; ducting connected with the closure means and communicating with the fire chamber; and fan means for inducing an airstream in the ducting and through the fire chamber so that smoke and particulates resulting from the combustion of the contaminants will become entrained in the airstream and will leave the fire chamber through the ducting.
Claim 3
Dependent Claim
32 words
The structure according to claim 1 and further characterized by antipollution means for removing smoke and particulates from the airstream; and wherein the fan means maintains the airstream within the anti-pollution means.
Claim 4
Dependent Claim
34 words
The structure according to claim 1 wherein the burners extend transversely to the direction of flow along the conveying deck and further extend substantially from one side of the conveying deck to the other.
Claim 5
Dependent Claim
46 words
The structure according to claim 1 wherein the closure means extends across the top of the conveying deck and also downwardly at the sides thereof; and wherein the sides of the closure means are removeable, at least in part, to afford access to the conveying deck.
Claim 6
Dependent Claim
93 words
The structure according to claim 1 wherein the closure means comprises a frame, an insulateD covering supported on the frame and extending over the conveying deck in upwardly spaced relation thereto so as to form the top of the fire chamber, and side curtains supported by the frame and defining the sides of the fire chamber, the side curtains being spaced outwardly from the sides of the conveying deck so that air can be admitted to the fire chamber from the spaces between the sides of the conveying deck and the side curtains.
Claim 7
Dependent Claim
53 words
The structure according to claim 5 wherein at least some of the side curtains are shiftable inwardly and outwardly relative to the conveying deck so that the width of the space between the conveying deck and the side curtains can be varied for controlling the amount of air admitted to the fire chamber.
Claim 8
Dependent Claim
25 words
The structure according to claim 5 wherein the side curtains are removeable to expose the fire chamber and to provide access to the conveying deck.
Claim 9
Dependent Claim
50 words
The structure according to claim 1 and further characterized by a water-filled pan positioned beneath the conveying deck and agitated by the drive means, the water-filled pan being close enough to the conveying deck to splash water upon the underside thereof when agitated whereby the conveying deck will not overheat.
Claim 10
Dependent Claim
224 words
A high temperature cleaning apparatus for removing surface contaminants from metal segments, said apparatus comprising a closure defining a fire chamber; means for heating the fire chamber; and a conveyor for transporting metal segments through the fire chamber, and said conveyor including: a base, a conveying deck supported on the base for supporting the metal segments, the conveying deck being located in the closure and exposed to the fire chamber so that the surface contaminants will be burned from the metal segments, the conveying deck being movable relative to the base and having a receiving end and a discharge end, drive means connected with the conveying deck for imparting oscillatory motion thereto, the oscillatory motion being such that the metal segments move along the deck from the receiving end to the discharge end thereof, tumbling as they do so that different surfaces of the segments are presented upwardly, a water pan mounted directly below the conveying deck for holding water and also being oscillated by the drive means, the water pan being positioned close enough to the conveying deck to enable the water therein to splash against the underside of the conveying deck as the conveying deck and water pan are oscillated by the drive means, whereby the water in the water pan will cool the conveying deck and prevent it from being distorted.
Claim 11
Dependent Claim
224 words
A high temperature cleaning apparatus for removing surface contaminants from metal segments, said apparatus comprising a closure defining a fire chamber; means for heating the fire chamber; and a conveyor for transporting metal segments through the fire chamber, and said conveyor including: a base, a conveying deck supported on the base for supporting the metal segments, the conveying deck being located in the closure and exposed to the fire chamber so that the surface contaminants will be burned from the metal segments, the conveying deck being movable relative to the base and having a receiving end and a discharge end, drive means connected with the conveying deck for imparting oscillatory motion thereto, the oscillatory motion being such that the metal segments move along the deck from the receiving end to the discharge end thereof, tumbling as they do so that different surfaces of the segments are presented upwardly, a water pan mounted directly below the conveying deck for holding water and also being oscillated by the drive means, the water pan being positioned close enough to the conveying deck to enable the water therein to splash against the underside of the conveying deck as the conveying deck and water pan are oscillated by the drive means, whereby the water in the water pan will cool the conveying deck and prevent it from being distorted.
Claim 12
Dependent Claim
22 words
A high temperature cleaning apparatus according to claim 9 wherein the water pan is mounted rigidly with respect to the conveying deck.
Claim 13
Dependent Claim
49 words
A high temperature cleaning apparatus according to claim 9 wherein the heating means comprises burners which are oriented to direct the flames issuing therefrom downwardly and are positioned close enough to the conveying deck to enable the flames to impinge against the conveying deck and the metal segments thereon.
Claim 14
Dependent Claim
228 words
A high temperature cleaning conveyor for removing contaminants from metal segments, said cleaning conveyor comprising: an oscillating conveyor including a conveying deck having a receiving end onto which the contaminated metal is placed and a discharge end, drive means for agitating the conveying deck to cause it to advance the metal toward the discharge end, a base, a framework supporting the conveying deck and connected to the drive means, means supporting the framework on the base such that the framework can oscillate relative to the base, a laterally extending support member carried by the framework and underlying a portion of the conveying deck, a slip pad interposed between and separating the conveying deck and the laterally extending support member, and attaching means having a shank which extends through the laterally extending support member and the overlying portion of the conveying deck, the overlying portion of the conveying deck having a sLot which receives the shank and extends transversely of the direction of advance along the deck, whereby the deck will not buckle when expanded by heating; closure means defining a fire chamber located above the conveying deck and arranged such that the deck and the metal segments thereon are exposed to the fire chamber; and heating means for elevating the temperature of the fire chamber sufficiently to burn contaminants from the metal segments trnasported on the deck. transported
Claim 15
Dependent Claim
228 words
A high temperature cleaning conveyor for removing contaminants from metal segments, said cleaning conveyor comprising: an oscillating conveyor including a conveying deck having a receiving end onto which the contaminated metal is placed and a discharge end, drive means for agitating the conveying deck to cause it to advance the metal toward the discharge end, a base, a framework supporting the conveying deck and connected to the drive means, means supporting the framework on the base such that the framework can oscillate relative to the base, a laterally extending support member carried by the framework and underlying a portion of the conveying deck, a slip pad interposed between and separating the conveying deck and the laterally extending support member, and attaching means having a shank which extends through the laterally extending support member and the overlying portion of the conveying deck, the overlying portion of the conveying deck having a sLot which receives the shank and extends transversely of the direction of advance along the deck, whereby the deck will not buckle when expanded by heating; closure means defining a fire chamber located above the conveying deck and arranged such that the deck and the metal segments thereon are exposed to the fire chamber; and heating means for elevating the temperature of the fire chamber sufficiently to burn contaminants from the metal segments trnasported on the deck. transported
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |