US3822872A - Apparatus for collecting and extracting furnace fumes - Google Patents

Apparatus for collecting and extracting furnace fumes Download PDF

Info

Publication number
US3822872A
US3822872A US00351194A US35119473A US3822872A US 3822872 A US3822872 A US 3822872A US 00351194 A US00351194 A US 00351194A US 35119473 A US35119473 A US 35119473A US 3822872 A US3822872 A US 3822872A
Authority
US
United States
Prior art keywords
collector
conduit
communicating
collecting
collecting means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00351194A
Other languages
English (en)
Inventor
D Nell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caterpillar Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US00351194A priority Critical patent/US3822872A/en
Priority to GB1633574A priority patent/GB1449537A/en
Priority to BE143211A priority patent/BE813721A/xx
Priority to FR7413102A priority patent/FR2225708B1/fr
Priority to JP49041606A priority patent/JPS5752517B2/ja
Application granted granted Critical
Publication of US3822872A publication Critical patent/US3822872A/en
Assigned to CATERPILLAR INC., A CORP. OF DE. reassignment CATERPILLAR INC., A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CATERPILLAR TRACTOR CO., A CORP. OF CALIF.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/38—Removal of waste gases or dust
    • C21C5/40—Offtakes or separating apparatus for converter waste gases or dust
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/30—Arrangements for extraction or collection of waste gases; Hoods therefor
    • F27D17/304—Arrangements for extraction or collection of waste gases; Hoods therefor specially adapted for electric arc furnaces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S266/00—Metallurgical apparatus
    • Y10S266/90—Metal melting furnaces, e.g. cupola type

Definitions

  • The'hoods are .normally moved aside from the sta- 'tionary or. pivotally mounted furnace during. various phases of the foundry operation. Such. movement thus prevents the hood from fully entrapping the fumes emanating from, the furnace.
  • the hoods are normally bulky and oftentimes tend to interfere with CffiClCIlt operation ofoverhead c SUMMARY OFTHIS INVENTION ranes or like devices An objectofthisinventionis to'overcome' the above, v
  • the collector' may comprise a pair-of vertically spaced plates having annular portionsdetach'ably mounted thereon and defining-the collectors opening.
  • FIG. 1 is an isometric view illustrating an apparatus forcollecting and extracting gaseous fumes emanating from the melting chamber of a tiltable furnace;
  • FIGS. 2 and 3 are reduced sidefland rear elevational views of the apparatus, respectively.
  • FIG.Cl illustraterates a furnace of the basic electric type
  • the fur-' nace comprises a vessel 10 having a melting chamber 11 defined therein which may be suitably lined with a basic refractory and heated by graphite electrodes or the like (notshown).
  • the chamber terminates at its upper endat an opening 12 which may be charged with selected scrap and pig iron for the production of deoxidized carbon and alloy steels. which are thereafter tapped, killed and 'teerned into ingot moldsin a conventionalmanner.”
  • the vessel V H 4 trated stationary support "13 by pivot means comprising ,a pair of laterally spaced and axially alignedtrunnions
  • the collector comprises upperand flower ?parallel p'lates*22 securedtogether about a substantial, portion of their perimeters" by -a vertically'disposed' outer wall mounted oin'j a: t-sall ms.
  • the horizontally disposed support is secured to a floor 15 of a foundry andi's constructed to permit tilting of the vessel about axis A of the trunnions and to its phantom-line position illustrated in-FIG. 2. Upon such tilting, molten metalis disfront side of the vessel.
  • the vessel has a laterally extending chargingfldeck 1 7 secured thereto, in substantial horizontal alignment with'support 13,-which pivotally mounts a cover- 18- thereon.
  • Thecover is pivotally mounted on an upstandvingsupportlSl, secured'to the deck,-;for pivotalmove- 'ments'abo'ut a vertically disposed axis B;-
  • the cover is adapted ;to be pivoted by a suitable drive mechanism (not shown) disposed in support 19 toselectively cover jopeningfl2."
  • a suitable drive mechanism not shown
  • FIGL 3 Such a covering position is illustrated in FIGL 3 wherein an annular clearance 20 of limited heightis defined between the underside of the cover and the'top side of a collector 21 for purposes hereinaf- 23.
  • a plurality of upstanding and annular'flow" guide means or spacers 25 are secured between annular portions 26 of plates'22 which'define a'circular charging opening 27'therethrough to expose chamber 11.
  • the cylindrical spacers are circumferentially disposed about the opening to define a. restricted flow passage 28 between each adjacent pair of spacers:
  • Plates 22- and, wall 23 are' interrupted at an opening 29 formed 1 through their front sides toipermit pour spout 16 to project theretlirOughQ-AnnuIar portions 26 of the plates are, pre'fe rabl'y" 'detachably mounted thereon.
  • Suchy portions, l preferably composed of- -.a highly -heat r'esistant'material such as stainless steel,
  • r v v "A manifold '30 is secured to lower plate 22 and terminates at an upwardly facing inletopening 31 which communicates with collecting chamber 24.
  • - Conduit means'32 communicate with the collecting chamber
  • the conduit means comprises a first conduit or duct 33 having its upper end pivotally mounted at 34 on manifold 30 for pivotal movement about a horizontally disposed axis C spaced laterally from axis.
  • the lower end of the first conduit means is pivotally I mounted at 35 on an end of a stationary second conduit orduct 36 for pivotal movement about a horizontally disposed axis D, parallel to axis C.
  • the first conduit may comprise a first section'37 having a second section I 38. slidably mounted thereinv to provide means for per mitting the first conduit to continuously maintain communication with manifold 30 and thus collection chamber 24 'upon tilting of vessel 10 and collector 21.
  • the i tolerances defined between the two-telescopic sections are suitably sized to provide a static seal therebetweendue to the relativelyhigh velocity of the exiting gases.
  • Second conduit 36 has a conventional damper means, schematically illustrated at 39, operatively mounted therein to selectively control the cross sectional area of its flow passage.
  • a suction fan means schematically illustrated at 40 and positioned downstream of the damper means, functions to draw the fumes through the conduit means and into a scavenging system (not shown).
  • a factory crane or the like initially positions a charging bucket over opening 27 of the collector to charge chamber 11 with suitably composed scrap and pig iron.
  • damper 39 is actuated to fully open the flow passage of second conduit 36 to permit maximum fume extraction from melting chamber 11.
  • Spacers 25 may be selectively spaced circumferentially to in turn vary the size of passages 28 relative to each other. Such variance will permit the integrated flow passages in collecting chamber 24, manifold 30 and conduit means 32 to be suitably sized and otherwise constructed to provide substantially uniform and nonturbulent flow (minimal frictional drag and pressure drops) therethrough upon extraction of the fumes during all phases of the foundry operation.
  • Cover 18 is then pivoted over opening 27 and the contents of vessel are heated to their proper melt temperature. Simultaneously therewith, damper 39 is actuated to restrict the size of the flow passage in second conduit means 36 to conserve heat in the vessel. It should be noted, however, that a limited volume of ambient air is permitted to flow into the vessel and collecting chamber through annular clearance (FIG. 3) and pour spout 16.
  • cover 18 is maintained over opening 27 and damper 39 is actuated to its fully open position to insure maximum flow of the fumes through the conduit means.
  • a hydraulic actuator 41 pivotally mounted between the floor l5 and the deck 17 secured to the vessel 10, is then extended to simultaneously tilt vessel 10, cover 18, and collector 21 on trunnions 14 to dispense the melt through pour spout l6 and into suitably positioned ingot molds (not shown).
  • sections 37 and 38 of the first conduit will telescope within each other, as further illustrated by phantom lines in FIG. 2.
  • first conduit means 33 could be reconstructed as a one-piece duct. Such reconstruction would require a repositioning of manifold 30-and pivotal connection 34 to place axes A and C in coincident relationship relative to each other. Thus, the unitary first conduit would remain in its original position upon tilting of the vessel and manifold.
  • pivotal connection 35 would not be required between the first and second conduit means.
  • a second conduit means 32 and attendant hardware could be operatively connected to the collector on the opposite side thereof or at any other suitable location therearound.
  • An apparatus comprising a vessel defining a melting chamber therein which terminates at an opening at its upper end,
  • a horizontally disposed collector mounted on said vessel including a pair of vertically spaced plates each having an annular portion detachably mounted thereon and an opening formed through each of said annular portions communicating with the opening to said chamber,
  • pivot means pivotally mounting said vessel and said collector on said support
  • conduit means communicating with said collecting means for conducting fumes exteriorly of said collector comprising a first conduit pivotally mounted on said collector and communicating with said collecting means and a stationary second conduit connected directly to said first conduit and communicating therewith, and
  • means including the pivotal mount of said first conduit on said collector, for maintaining said first conduit in continuous communication with said collecting means and said second conduit upon pivoting of said vessel and said collector.
  • the apparatus of claim 1 further comprising a horizontally disposed cover movably mounted on said collector to selectively cover the opening formed therethrough.
  • the apparatus of claim 3 further comprising a plurality of flow guide means secured between said plates and circumferentially disposed about the opening formed through said collector means to define a flow passage communicating said chamber with said collecting means between each adjacent pair of flow guide means.
  • each of said flow guide means are attached between said annular portions.
  • the apparatus of claim 1 further comprising a manifold secured on said collector and having an inlet communicating with said collecting means and an outlet communicating with said first conduit.
  • said means for maintaining said first conduit in continuous communication with said collecting means and with said second conduit further comprises a telescopic connection between first and second sections of said first conduit and a pivotal connection between said first and second conduits.
  • damper means operatively mounted in a fiow passage of said second conduit for selectively controlling the cross sectional area of said flow passage.
  • the apparatus of claim 10 further comprising suction fan. means positioned downstream of said damper means in said flow passage.
  • An apparatus comprising a vessel defining a melting chamber therein which terminates at an opening at its upper end,
  • a horizontally disposed collector including a pair of vertically spaced plates mounted on said vessel, an annular portion detachably mounted on each of said plates, means forming an opening formed through each of said annular portions communicating with the opening to said chamber, and generally annular collecting means defined in said collector to at least substantially circumvent the opening formed through said annular portions.
  • the apparatus of claim 12 further comprising a plurality of flow guide means secured between said ann'ular portions in circumferentially disposed relationship therearound to define a flow passage between each adjacent pair of flow guide means communicating said chamber with said collecting means.
  • the apparatus of claim 12 further comprising a horizontally disposed cover movably mounted on said collector to selectively cover the opening formed there-. through.
  • said collector comprises a pair of vertically spaced and horizontally disposed plates secured together about a substantial portion of their perimeters by an upstanding sidewall to define said collecting means.
  • conduit means communicating with said collecting means for conducting fumes exteriorly of said collec- I01.
  • the apparatus of claim 17 further comprising a manifold secured on said collector and having an inlet communicating with said collecting-means and an outlet communicating with said conduit means.
  • damper means operatively mounted in a flow passage of said conduit means for selectively controlling the cross sectional area of said flow passage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
US00351194A 1973-04-16 1973-04-16 Apparatus for collecting and extracting furnace fumes Expired - Lifetime US3822872A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US00351194A US3822872A (en) 1973-04-16 1973-04-16 Apparatus for collecting and extracting furnace fumes
GB1633574A GB1449537A (en) 1973-04-16 1974-04-11 Fume extractors
BE143211A BE813721A (fr) 1973-04-16 1974-04-12 Appareil pour collecter et extraire les fumees des fours
FR7413102A FR2225708B1 (cg-RX-API-DMAC7.html) 1973-04-16 1974-04-12
JP49041606A JPS5752517B2 (cg-RX-API-DMAC7.html) 1973-04-16 1974-04-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00351194A US3822872A (en) 1973-04-16 1973-04-16 Apparatus for collecting and extracting furnace fumes

Publications (1)

Publication Number Publication Date
US3822872A true US3822872A (en) 1974-07-09

Family

ID=23379965

Family Applications (1)

Application Number Title Priority Date Filing Date
US00351194A Expired - Lifetime US3822872A (en) 1973-04-16 1973-04-16 Apparatus for collecting and extracting furnace fumes

Country Status (5)

Country Link
US (1) US3822872A (cg-RX-API-DMAC7.html)
JP (1) JPS5752517B2 (cg-RX-API-DMAC7.html)
BE (1) BE813721A (cg-RX-API-DMAC7.html)
FR (1) FR2225708B1 (cg-RX-API-DMAC7.html)
GB (1) GB1449537A (cg-RX-API-DMAC7.html)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD285832S (en) 1983-08-25 1986-09-23 Nederman Bill P P Fume extractor arm
EP0525275A1 (de) * 1991-07-30 1993-02-03 ABBPATENT GmbH Induktionstiegelofen mit begehbarer Ofenbühne
US5711289A (en) * 1995-01-17 1998-01-27 Nordson Corporation Vapor removal system for bulk adhesive handling systems
USD410015S (en) 1998-04-06 1999-05-18 Nordson Corporation Lid assembly for a hot melt adhesive applicator
US6039217A (en) * 1998-04-07 2000-03-21 Nordson Corporation Apparatus and method for thermoplastic material handling
US6475080B1 (en) * 1999-12-23 2002-11-05 Roche Colorado Corporation Fume ventilation apparatus
CN112833676A (zh) * 2020-12-24 2021-05-25 北京航星机器制造有限公司 一种坩埚除尘用环形侧吸罩及其吸尘方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7614284L (sv) * 1976-12-20 1978-06-21 American Air Filter Co Anordning for uppfangande och bortledande av rokgaser fran en smeltugnsanleggning
JPS58137593U (ja) * 1982-03-10 1983-09-16 日立造船株式会社 骨材の位置決め肌付け溶接装置
JP5419550B2 (ja) * 2009-06-02 2014-02-19 北芝電機株式会社 電気炉用集塵装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3415179A (en) * 1964-06-11 1968-12-10 Hawley Manufacturing Corp Exhaust system for hood structure
US3608278A (en) * 1969-07-22 1971-09-28 Saul Greenspan Apparatus for filtering and collecting solid matter from a smoke flow
US3756582A (en) * 1971-10-01 1973-09-04 Hawley Manufacturing Corp Exhaust and charging hood for tilting furnace

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS441205Y1 (cg-RX-API-DMAC7.html) * 1965-12-06 1969-01-18

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3415179A (en) * 1964-06-11 1968-12-10 Hawley Manufacturing Corp Exhaust system for hood structure
US3608278A (en) * 1969-07-22 1971-09-28 Saul Greenspan Apparatus for filtering and collecting solid matter from a smoke flow
US3756582A (en) * 1971-10-01 1973-09-04 Hawley Manufacturing Corp Exhaust and charging hood for tilting furnace

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD285832S (en) 1983-08-25 1986-09-23 Nederman Bill P P Fume extractor arm
EP0525275A1 (de) * 1991-07-30 1993-02-03 ABBPATENT GmbH Induktionstiegelofen mit begehbarer Ofenbühne
US5267259A (en) * 1991-07-30 1993-11-30 Abb Patent Gmbh Induction crucible furnace with sonically uncoupled accessible furnace platform
US5711289A (en) * 1995-01-17 1998-01-27 Nordson Corporation Vapor removal system for bulk adhesive handling systems
USD410015S (en) 1998-04-06 1999-05-18 Nordson Corporation Lid assembly for a hot melt adhesive applicator
US6039217A (en) * 1998-04-07 2000-03-21 Nordson Corporation Apparatus and method for thermoplastic material handling
US6475080B1 (en) * 1999-12-23 2002-11-05 Roche Colorado Corporation Fume ventilation apparatus
CN112833676A (zh) * 2020-12-24 2021-05-25 北京航星机器制造有限公司 一种坩埚除尘用环形侧吸罩及其吸尘方法

Also Published As

Publication number Publication date
JPS5752517B2 (cg-RX-API-DMAC7.html) 1982-11-08
GB1449537A (en) 1976-09-15
FR2225708A1 (cg-RX-API-DMAC7.html) 1974-11-08
BE813721A (fr) 1974-10-14
FR2225708B1 (cg-RX-API-DMAC7.html) 1978-09-08
JPS508705A (cg-RX-API-DMAC7.html) 1975-01-29

Similar Documents

Publication Publication Date Title
US3822872A (en) Apparatus for collecting and extracting furnace fumes
US5343492A (en) Closed induction furnace for the melting and casting of substances
US2568525A (en) Gas hood for casting machines
US3979551A (en) Arc furnace fumes control system
US3911993A (en) Method and apparatus for adding treating agents to molten metal
CA1270370A (en) Induction furnace with a furnace bottom and lid
JPH1019475A (ja) 溶解炉用の集塵装置
GB1110961A (en) Apparatus for casting of molten metal
US3756582A (en) Exhaust and charging hood for tilting furnace
US4836732A (en) Method and apparatus for continuously charging a steelmaking furnace
US3999001A (en) Arc furnace fumes control system
CA1068468A (en) Continuous casting apparatus with an articulative sealing connection
EP0011478B1 (en) Apparatus and process for the treatment of molten metal
JPH07133987A (ja) 材料投入装置を備える誘導炉
US4120487A (en) Fume hood for a melt pot
FR2416752A1 (fr) Procede et installation pour brasser du metal en fusion
US2982534A (en) Rotary furnace apparatus
US4200263A (en) Filling stand arrangement for a metallurgical ladle
US3724827A (en) Anti-pollution device for a metallurgical vessel
US4286776A (en) Arrangement of a steel-making plant for capturing and conducting away flue gases
US4393507A (en) Method and apparatus for charging lime into an electric arc furnace
CN108151534A (zh) 一种防止进料口堵塞的机械铸造用熔炼装置
US4345747A (en) Filling stand for pouring molten metal from a tiltable metallurgical vessel into a metallurgical ladle
JPH0638311Y2 (ja) 電気炉の集塵装置
US5425047A (en) Closed induction furnace with a tilting apparatus

Legal Events

Date Code Title Description
AS Assignment

Owner name: CATERPILLAR INC., 100 N.E. ADAMS STREET, PEORIA, I

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905

Effective date: 19860515

Owner name: CATERPILLAR INC., A CORP. OF DE.,ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905

Effective date: 19860515