US3386718A - Rotary heat exchanger with a chain drive - Google Patents

Rotary heat exchanger with a chain drive Download PDF

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Publication number
US3386718A
US3386718A US571021A US57102166A US3386718A US 3386718 A US3386718 A US 3386718A US 571021 A US571021 A US 571021A US 57102166 A US57102166 A US 57102166A US 3386718 A US3386718 A US 3386718A
Authority
US
United States
Prior art keywords
links
chain
shell
flange
kiln
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
US571021A
Other languages
English (en)
Inventor
Thomson S Abbott
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.)
Allis Chalmers Corp
Original Assignee
Allis Chalmers Corp
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 Allis Chalmers Corp filed Critical Allis Chalmers Corp
Priority to US571021A priority Critical patent/US3386718A/en
Priority to GB35555/67A priority patent/GB1151408A/en
Priority to DE19671625502 priority patent/DE1625502A1/de
Priority to NO169285A priority patent/NO117380B/no
Priority to FI672136A priority patent/FI47017C/fi
Priority to SE11202/67A priority patent/SE312640B/xx
Priority to BE702395D priority patent/BE702395A/xx
Priority to DK402067AA priority patent/DK115868B/da
Application granted granted Critical
Publication of US3386718A publication Critical patent/US3386718A/en
Assigned to CONNECTICUT NATIONAL BANK THE, A NATIONAL BANKING ASSOCIATION AS TRUSTEE, WOODS KATHLEEN D., AS TRUSTEE reassignment CONNECTICUT NATIONAL BANK THE, A NATIONAL BANKING ASSOCIATION AS TRUSTEE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ALLIS-CHALMERS CORPORATION A DE CORP.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
    • F27B7/26—Drives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
    • F27B7/22—Rotary drums; Supports therefor
    • F27B2007/2246—Support rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
    • F27B7/26—Drives
    • F27B2007/261—Drives working with a ring embracing the drum
    • F27B2007/262—A gear ring combined with a dented wheel drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
    • F27B7/26—Drives
    • F27B2007/261—Drives working with a ring embracing the drum
    • F27B2007/265—Drives working with a ring embracing the drum the ring being mounted floatingly
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/1987—Rotary bodies
    • Y10T74/19893—Sectional
    • Y10T74/1993—Segmental rim
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19949—Teeth
    • Y10T74/19963—Spur
    • Y10T74/19972—Spur form

Definitions

  • a rotary kiln is disclosed which is provided with an assembly for rotating the kiln shell about a generally horizontal axis.
  • the assembly includes a chain looped around the shell and a sprocket external of the chain loop but engaging the chain to turn the shell.
  • the chain comprises a first series of links and a second series of links arranged alternately with the links of the first series.
  • the links of the first series are each rigidly connected to the shell and the links of the second series are articulately connected to the links of the first series.
  • the chain assembly is there fore rigidly attached to the kiln shell around the entire periphery of the shell and also articulately conforms to the shape of the shell as it is distorted due to thermal and other stresses applied to the shell.
  • This invention relates to apparatus having a rotatable cylindrical shell and in particular to rotary kilns provided with a drive for turning the cylindrical shell about its central axis.
  • Rotary kilns are presently being built with much larger diameters than have been popular in the past. Where, in the past, it was the practice to provide several kilns of feet diameter, it is now the practice to supply a single kiln having a diameter of 20 or more feet. Annular gears mounted around shells of such large diameter are expensive, heavy, difficult to mount and because of their greater diameter, they are more subject to thermal stresses and distortion induced by high temperatures and temperature variations within the kiln.
  • the present invention is directed to a new and improved apparatus of the type described and to solving the probrivs that have been described as being associated with prior designs and constructions of such apparatus. It is among the objects of the present invention to provide an apparatus, having a rotatable shell subject to stress and distortion, with a less expensive but improved drive for rotating the shell about its central axis that also accommodates thermally induced distortion without applying metal fatiguing stress to parts of the drive system.
  • an annular flange is secured to the outer circumference of the kiln.
  • An endless roller chain is arranged around the outer periphery of the flange and connected to the flange to conform thereto as the flange is distorted by thermally induced stresses.
  • a motor driven sprocket having a plurality of radially projecting teeth, is spaced from the kiln and flange and arranged with the sprocket axis parallel to the kiln axis. Sprocket teeth projecting toward the kiln shell engage the chain to rotate the kiln shell upon rotation of the driving sprocket.
  • a second chain and sprocket such as has been described may be axially spaced from a first such assembly, with both sprockets mounted on a common motor driven shaft, in order to divide the torque transmitted to the kiln, between the two chains.
  • FIG. 1 is a partial side elevation of a rotary kiln incorporating a preferred form of the present invention.
  • FIG. 2 is a view in cross section taken along the line IIII in FIG. 1.
  • the apparatus shown comprises an elongated cylindrical shell assembly 3 having a pair of axially spaced annular riding rings 4 and 5. These annular rings 4, 5 may be supported on rollers 6, 'i journaled in bearings S, 9 and 10, 11, respectively, for rotation of shell 3 about its own central axis.
  • the shell assembly includes an annular flange 29 which has a peripheral surface Zita.
  • Flange 20 is mounted on the outer circumference of shell 3 and secured thereto in any suitable manner, as for example by welding.
  • An endless roller chain 21 is arranged around the outer periphery of flange 20.
  • the chain 21 comprises a plurality of links '22.
  • the links are arranged in pairs with the links of each pair being parallel to each other.
  • the links of alternate pairs in the chain are called inside links 23 and outside links 24.
  • the terms are conventional and arise from the way the ends of adjacent links overlap. That is, the ends of a pair of parallel links 24 overlap and are outward of the overlapped ends of an adjacent pair of parallel links 23.
  • the links 24 are therefore called outside links and the links 23 are called inside links.
  • a pin 25 passes through the ends of a pair of outside links 24 and a pair of overlapped inside links 23 and a roller 26 placed between the ends of the inside links.
  • the chain 21 is shown as being connected to flange 20 by providing a bracket portion 30 projecting radially inward from each of the inside links 23.
  • the brackets 30 are each secured to the flange 20 by a pair of bolts 31.
  • a second chain 21a may be mounted on a second flange 20:: (see FIG. 2) in axially spaced relation to flange 20 and chain 21.
  • a driving assembly 34 comprising a motor 35 mounted on a pedestal 36.
  • the motor 35 drives a shaft 37 parallel to shell 3 and journaled in bearings 38 mounted upon a support 39 which in turn may be mounted on the pedestal 36.
  • a pair of sprockets 40, 41 are mounted on shaft 37 and are axially spaced from each other to be in the respective radial planes defined by the chains 21, 21a.
  • the sprockets 4t 41 may be keyed to shaft 37 in any suitable manner (not shown).
  • sprocket 40 is provided with radially outward projecting teeth 42.
  • sprocket 49 The alignment of sprocket 49 is such that as teeth 42 are pointed toward shell 3 during rotation of sprocket 40, such teeth engage rollers 26 of chain 21 by projecting into a space 43 defined between adjacent rollers 26 and between an axially aligned pair of inside links 23 or outside links 24.
  • a second driving assembly 34a may be provided and arranged as shown in FIG. 2.
  • the assembly 34:: may be identical to the described assembly 34.
  • motor 35 is energized by suitable means (not shown) to turn shaft 37 clockwise as viewed in FIG. 2.
  • Shaft 37 turns sprocket 4% to turn teeth 4.2 toward shell 3 and project such tech into space 43 where the rollers 26 of chain 21 are engaged and the assembly of chain 21, flange 2t) and shell 3 is thereby rotated counterclockwise as viewed in FIG. 2.
  • the pins 25 provide an articulate connection between adjacent links of the chain.
  • the chain therefore continuously conforms to the circumferential shape of the peripheral surface 20a without slack and despite thermally induced distortion that may cause flange 29 to become out-ofround, and without applying any metal fatigue producing stress to the chain 21.
  • an apparatus having a generally horizontal cylindrical shell assembly subject to stress and distortion supported on horizontally spaced supports to rotate about a and means for rotating said shell assembly about the central axis thereof, comprising, an endless chain arranged around said peripheral surface and between said horizontally spaced supports with said chain connected to said shell assembly to conform to circumferential shape of said surface along the entire circumference of said chain, and a rotatable sprocket having a plurality of radially projecting teeth, said sprocket being spaced away from said shell assembly and aligned relative to said shell assembly with the axis of said sprocket parallel to the axis of rotation of said shell assembly and with teeth of said plurality of teeth that project from said sprocket toward said shell assembly engaging said chain to rotate said shell assembly upon rotation of said sprocket, said chain comprising a first series of links and a second series of links arranged alternately with the links of said first series, said first series of links each having a portion projecting radially inward and rigidly attached to said
  • said shell assembly having an annular flange about the shell with said flange projecting radially outward of said shell, a peripheral surface defining the outer circumference of said flange, said chain being arranged around said peripheral surface and said radially inward projecting portion of each link of said first series being attached to said flange to support said links of the second series spaced radially outward of the outer circumference of said flange.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Gears, Cams (AREA)
  • Drying Of Solid Materials (AREA)
  • Screw Conveyors (AREA)
US571021A 1966-08-08 1966-08-08 Rotary heat exchanger with a chain drive Expired - Lifetime US3386718A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US571021A US3386718A (en) 1966-08-08 1966-08-08 Rotary heat exchanger with a chain drive
GB35555/67A GB1151408A (en) 1966-08-08 1967-08-02 Improved Rotatable Cylindrical Shell Assembly
DE19671625502 DE1625502A1 (de) 1966-08-08 1967-08-05 Antriebseinrichtung fuer einen drehbaren,zylindrischen Behaelter
FI672136A FI47017C (fi) 1966-08-08 1967-08-07 Käyttölaite pyörivää sylinterimäistä vaipparakennetta varten.
NO169285A NO117380B (enrdf_load_stackoverflow) 1966-08-08 1967-08-07
SE11202/67A SE312640B (enrdf_load_stackoverflow) 1966-08-08 1967-08-07
BE702395D BE702395A (enrdf_load_stackoverflow) 1966-08-08 1967-08-07
DK402067AA DK115868B (da) 1966-08-08 1967-08-07 Drivmekanisme ved roterovne, roterkølere, formalingsmøller og lignende apparater med en lignende, cylindrisk tromle.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US571021A US3386718A (en) 1966-08-08 1966-08-08 Rotary heat exchanger with a chain drive

Publications (1)

Publication Number Publication Date
US3386718A true US3386718A (en) 1968-06-04

Family

ID=24282009

Family Applications (1)

Application Number Title Priority Date Filing Date
US571021A Expired - Lifetime US3386718A (en) 1966-08-08 1966-08-08 Rotary heat exchanger with a chain drive

Country Status (8)

Country Link
US (1) US3386718A (enrdf_load_stackoverflow)
BE (1) BE702395A (enrdf_load_stackoverflow)
DE (1) DE1625502A1 (enrdf_load_stackoverflow)
DK (1) DK115868B (enrdf_load_stackoverflow)
FI (1) FI47017C (enrdf_load_stackoverflow)
GB (1) GB1151408A (enrdf_load_stackoverflow)
NO (1) NO117380B (enrdf_load_stackoverflow)
SE (1) SE312640B (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3477704A (en) * 1967-05-01 1969-11-11 Sherwood William L Connection apparatus for sections of a rotary furnace
US3679035A (en) * 1970-03-19 1972-07-25 Passavant Werke Bearing and drive means for large size revolving drums
US3942769A (en) * 1974-01-31 1976-03-09 Peter Maurice Whiteside Composting unit
US3996814A (en) * 1974-09-13 1976-12-14 Glen Edgar Westlake Sprocket
US4200400A (en) * 1977-12-27 1980-04-29 Gutehoffnungshutte Sterkrade A.G. Mixing car for transporting molten metals
US4317291A (en) * 1976-02-19 1982-03-02 Expert N.V. Rotatable drum drive
US4669274A (en) * 1986-01-27 1987-06-02 Huang Cheng F Slush and ice cream maker
CN104546482A (zh) * 2013-10-13 2015-04-29 天水华圆制药设备科技有限责任公司 直筒型螺旋抛光模块

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE500151C2 (sv) * 1993-03-30 1994-04-25 Ulf Henricson Hydrauliskt drivsystem för drift av företrädesvis tunga industriella arbetsenheter
CN113787390A (zh) * 2021-09-24 2021-12-14 合肥康东柴油机配套有限公司 一种船舶与海洋工程柴油机推力轴承加工工装及方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US672065A (en) * 1900-03-17 1901-04-16 W B Putnam Apparatus for oxidizing ore.
US2296791A (en) * 1941-06-07 1942-09-22 Sam F Keener Rotary furnace
US2455531A (en) * 1944-10-06 1948-12-07 Petersen Oven Co Metal furnace
US3108488A (en) * 1957-09-30 1963-10-29 Kalman Z Huszar Gear

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US672065A (en) * 1900-03-17 1901-04-16 W B Putnam Apparatus for oxidizing ore.
US2296791A (en) * 1941-06-07 1942-09-22 Sam F Keener Rotary furnace
US2455531A (en) * 1944-10-06 1948-12-07 Petersen Oven Co Metal furnace
US3108488A (en) * 1957-09-30 1963-10-29 Kalman Z Huszar Gear

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3477704A (en) * 1967-05-01 1969-11-11 Sherwood William L Connection apparatus for sections of a rotary furnace
US3679035A (en) * 1970-03-19 1972-07-25 Passavant Werke Bearing and drive means for large size revolving drums
US3942769A (en) * 1974-01-31 1976-03-09 Peter Maurice Whiteside Composting unit
US3996814A (en) * 1974-09-13 1976-12-14 Glen Edgar Westlake Sprocket
US4317291A (en) * 1976-02-19 1982-03-02 Expert N.V. Rotatable drum drive
US4200400A (en) * 1977-12-27 1980-04-29 Gutehoffnungshutte Sterkrade A.G. Mixing car for transporting molten metals
US4669274A (en) * 1986-01-27 1987-06-02 Huang Cheng F Slush and ice cream maker
CN104546482A (zh) * 2013-10-13 2015-04-29 天水华圆制药设备科技有限责任公司 直筒型螺旋抛光模块

Also Published As

Publication number Publication date
SE312640B (enrdf_load_stackoverflow) 1969-07-21
FI47017B (enrdf_load_stackoverflow) 1973-05-02
DK115868B (da) 1969-11-17
FI47017C (fi) 1973-08-10
DE1625502A1 (de) 1970-07-23
GB1151408A (en) 1969-05-07
NO117380B (enrdf_load_stackoverflow) 1969-08-04
BE702395A (enrdf_load_stackoverflow) 1968-02-07

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Legal Events

Date Code Title Description
AS Assignment

Owner name: WOODS KATHLEEN D., AS TRUSTEE

Free format text: SECURITY INTEREST;ASSIGNOR:ALLIS-CHALMERS CORPORATION A DE CORP.;REEL/FRAME:004149/0001

Effective date: 19830329

Owner name: CONNECTICUT NATIONAL BANK THE, A NATIONAL BANKING

Free format text: SECURITY INTEREST;ASSIGNOR:ALLIS-CHALMERS CORPORATION A DE CORP.;REEL/FRAME:004149/0001

Effective date: 19830329