US3604125A - Tubular rotary cooler - Google Patents

Tubular rotary cooler Download PDF

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Publication number
US3604125A
US3604125A US877889A US3604125DA US3604125A US 3604125 A US3604125 A US 3604125A US 877889 A US877889 A US 877889A US 3604125D A US3604125D A US 3604125DA US 3604125 A US3604125 A US 3604125A
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US
United States
Prior art keywords
drum
tubes
kiln
central axis
end wall
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
US877889A
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English (en)
Inventor
Edward H Baxa
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
Application granted granted Critical
Publication of US3604125A publication Critical patent/US3604125A/en
Assigned to WOODS KATHLEEN D., AS TRUSTEE, CONNECTICUT NATIONAL BANK THE, A NATIONAL BANKING ASSOCIATION AS TRUSTEE reassignment WOODS KATHLEEN D., 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

    • 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
    • F27B7/38—Arrangements of cooling devices
    • F27B7/40—Planetary coolers
    • 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

Definitions

  • a rotary kiln and cooler installation including a generally horizontal rotary kiln, a drive engaging the kiln for turning the kiln about its central axis, and a rotary cooler.
  • the cooler assembly includes a material receiving and distributing drum having a cylindrical shell and first and second end walls.
  • the first end wall is an annular wall defining a central material receiving opening.
  • the second end wall defines a plurality of material discharge ports arcuately spaced from each other and arranged in close proximity to the cylindrical shell.
  • a cluster of material cooling tubes, with one of the tubes being connected to each other of the ports in the second end wall of the drum, are arranged to be parallel to each other and the cylindrical shell of the drum.
  • the tubes each have a discharge opening on an end thereof remote from said drum.
  • Support means engage the assembly for carrying the drum and tubes for rotation about a central axis passing through the drum and cluster of tubes and the assembly is supported with the central axis sloped downwardly from the drum toward the tube discharge openings.
  • Drive means engage the cooler assembly for turning the drum and cluster of tubes around the central axis at a rate independent of the rotation of the kiln and the material is distributed from the drum into the cooling tubes.
  • This invention relates to rotary kiln and cooler installations and in particular to a rotary cooler assembly having a plurality of tubes arranged in a ringlike cluster with each tube parallel to the kiln, and adapted to receive hot material from the rotary kiln, for cooling in the tubes.
  • a rotary kiln and tubular cooler installation according to the present invention not only achieves the aforesaid principal object relative to the described prior art, but also achieves other objects.
  • Another such object of the present invention is to provide a cluster of cooling tubes that may be turned about a central axis at a rate independent of kiln speed.
  • Another object of the present invention is to provide a structure between a kiln and cooler tubes that can be made large enough to support a sufficient number of tubes to reduce air velocity through each tube to permit hot materials to flow into all tubes without being hindered by the oppositely flowing cooling air.
  • a rotary kiln engages a cooler assembly having a material receiving and distributing drum of larger diameter than the kiln.
  • the drum has a first end wall which is annular and surrounds the discharge end of the kiln.
  • the drum has a second end wall defining a plurality of material discharge ports arranged around its outer circumference.
  • a material-cooling tube is connected to each port with all tubes parallel to the outer shell of the drum.
  • the tubes each have a discharge opening on an end thereof remote from said drum.
  • Support means engage the assembly for carrying the drum and tubes for rotation about a central axis sloped downwardly from the drum toward the tube discharge openings.
  • Means engage the cooler assembly for turning the drum and cluster of tubes around the central axis at a rate independent of the rotation of the kiln; and the large diameter drum, between the kiln into each of the tubes.
  • FIG. I of the accompanying drawing shows diagrammatically a side elevation, partly in section, a rotary kiln and cooler according to the present invention.
  • FIG. 2 is a view, in perspective, of apparatus shown in FIG. 1.
  • a portion of a rotary kiln shell I and its discharge end 2 is shown having a riding ring 4 mounted around its circumference, and a roller support assembly 5 which engages ring 4 to carry the kiln shell I for rotation about a central axis x-x sloped downwardly slightly toward the discharge end 2.
  • a drive means for turning the kiln shell I about the central axis x-x includes a motor 6 that drives a pinion gear 7 which in turn engages a girth gear 8 mounted around the kiln shell 1.
  • the rotary kiln shell 1 may be provided with a refractory lining 9 and the discharge end 2 may be constructed to retain such lining 9 as described in U.S. Pat. No. 3,016,236 and including an annular cooling jacket 10.
  • a cooler 12 Associated with the discharge end 2 of the kiln shell I, is a cooler 12 arranged to receive hot material spilling from the discharge end 2 of kiln l and cool such hot material with air which is thereby preheated for use as combustion air in the kiln.
  • the cooler 12 is an assembly including a material receiving and distributing drum 13 having a cylindrical shell 14, a first end wall 15 and a second end wall 16.
  • the first end wall 15 is an annular end wall defining a central material receiving opening 17 surrounding the discharge end 2 of the rotary kiln 1.
  • the second end wall 16 defines a plurality of material discharge ports 20 at the outer circumference of wall 16.
  • the drum 13, so formed by shell 14 and end walls l5, 16, has a diameter greater than the distance between end walls l5, 16 along the axis x-x.
  • a cluster of material cooling tubes 22 project from the drum 13 in a direction away from the rotary kiln 1.
  • Each one of the tubes 22 is connected to enclose one of the ports 20, there being a tube 22 for each such port 20, and each tube 22 has a discharge opening 23 on the end thereof remote from the drum 13.
  • An annular ring 24, having holes 25 through which the tubes 22 project, is provided near the discharge opening 23 ends of the tubes 22 to provide support for the tubes at a location axially spaced away from the end wall 16 of the drum 13.
  • a first riding ring 26 encircles the shell 14 of drum l3 and a second riding ring 27 encircles ring 24.
  • Cooler drive means include a motor 32 that drives a pinion gear 33 which in turn engages a girth gear 34 which may be mounted on the outer periphery of the shell 14 of drum 13.
  • a burner 36 for the rotary kiln 1, projects through a central opening 37 in end wall 16 of drum 13.
  • the burner 36 extends through the drum 13 and projects a short distance into the discharge end 2 of the rotary kiln 1.
  • An annular seal 38 is provided around the discharge end 2 of the rotary kiln 1.
  • This seal 38 may be of a well-known type, as shown in U.S. Pat. No. 2,266,396 to C. S. Lincoln et al. and U.S. Pat. No. 2,332,724 to W. C. Johnson.
  • the seal 38 comprises an annular seal ring 39, which may be attached to the outer periphery of the cooling jacket 10, and the ring 39 projects into an annular hood 40 attached to end wall 15 of the drum 13.
  • both the kiln l and the cooler 12 may be operated at their own optimum speed to achieve maximum efficiency of both units.
  • tubes 22 may be lengthened, shortened or replaced with greater or fewer numbers of such tubes of the same or different diameters. All the foregoing changes to the cooler may be achieved by merely changing wall 16, ring 24 and the tubes 22; and none of these changes require any rebuilding of the kiln or the shell 14 or wall 15 of the drum 13.
  • a material receiving and distributing drum having an outer shell having a diameter greater than the diameter of the kiln, and first and second end walls transverse to a central axis passing through said shell; the first end wall being an annular end wall defining a central material receiving opening surrounding the discharge end of the kiln; the second end wall defining a plurality of material discharge ports each arranged in the second wall to be radially outward of the central opening in the first wall; a cluster of material-cooling tubes with one of the tubes being connected to each of the ports in the second end wall of the drum, said tubes being arranged to be parallel to each other and the central axis of the drum, and said tubes each having a discharge opening on an end thereof remote
  • a rotating seal connecting the outer periphery of the kiln to the inner periphery of the surrounding annular end wall to substantially block entry of atmospheric air into the kiln and drum through the annular end wall of the drum.
  • a burner projecting through a central portion of the second end wall of the drum, through the interior of the drum, through the central opening in the first and annular end wall of the drum, and into the discharge end of the kiln.
  • a cooler comprising an assembly of: a material receiving and distributing drum having an outer shell and first and second end walls transverse to a central axis passing through said shell; the first end wall being an annular end wall defining a central material receiving opening; the drum definin a plurality of material discharge ports each arranged radia ly outward of the central opening in the first wall; a cluster of material cooling tubes with one of the tubes being connected, to each of the discharge ports in the drum, said tubes being arranged to be parallel to each other and the central axis of the drum, and said tubes each having a discharge opening on an end thereof remote from said drum; support means engaging the assembly for carrying the drum and tubes for rotation about said central axis passing through the drum and cluster of tubes and with said axis sloped downwardly from said drum toward said tube discharge openings; means engaging the assembly for turning the drum and cluster of tubes around the central axis to distribute material from the drum into the tubes for cooling as such material flows through the tubes to said tube discharge openings; a first riding ring encirc

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Incineration Of Waste (AREA)
US877889A 1969-11-19 1969-11-19 Tubular rotary cooler Expired - Lifetime US3604125A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87788969A 1969-11-19 1969-11-19

Publications (1)

Publication Number Publication Date
US3604125A true US3604125A (en) 1971-09-14

Family

ID=25370924

Family Applications (1)

Application Number Title Priority Date Filing Date
US877889A Expired - Lifetime US3604125A (en) 1969-11-19 1969-11-19 Tubular rotary cooler

Country Status (7)

Country Link
US (1) US3604125A (enrdf_load_stackoverflow)
DE (1) DE2056938B2 (enrdf_load_stackoverflow)
ES (1) ES385680A1 (enrdf_load_stackoverflow)
FR (1) FR2069611A5 (enrdf_load_stackoverflow)
GB (1) GB1258858A (enrdf_load_stackoverflow)
SE (1) SE368079B (enrdf_load_stackoverflow)
ZA (1) ZA707639B (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016007221B4 (de) * 2016-06-14 2018-10-25 Allgaier Werke Gmbh Drehrohrkühler und Verfahren zum Betreiben eines Drehrohrkühlers

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2026441A (en) * 1933-11-28 1935-12-31 Traylor Engineering & Mfg Comp Calciner

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2026441A (en) * 1933-11-28 1935-12-31 Traylor Engineering & Mfg Comp Calciner

Also Published As

Publication number Publication date
SE368079B (enrdf_load_stackoverflow) 1974-06-17
ZA707639B (en) 1972-06-28
ES385680A1 (es) 1973-03-16
DE2056938B2 (de) 1976-08-26
DE2056938A1 (de) 1971-05-19
FR2069611A5 (enrdf_load_stackoverflow) 1971-09-03
GB1258858A (enrdf_load_stackoverflow) 1971-12-30

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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