US3840335A - Fastening device for cooling tubes of a satellite cooler,particularly a rotary kiln satellite cooler - Google Patents

Fastening device for cooling tubes of a satellite cooler,particularly a rotary kiln satellite cooler Download PDF

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Publication number
US3840335A
US3840335A US00386754A US38675473A US3840335A US 3840335 A US3840335 A US 3840335A US 00386754 A US00386754 A US 00386754A US 38675473 A US38675473 A US 38675473A US 3840335 A US3840335 A US 3840335A
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United States
Prior art keywords
cooling tube
fastening device
saddles
saddle
tube
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Expired - Lifetime
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US00386754A
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English (en)
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H Deussner
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Individual
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Individual
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    • 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 peculiar to rotary-drum furnaces
    • F27B7/38—Arrangements of cooling devices
    • F27B7/40—Planetary coolers

Definitions

  • ABSTRACT A fastening device for cooling tubes which are uniformly distributed circumferentially about the circumference on the outlet end of a rotary tube, particularly a rotary kiln, and which are connected with the interior of the rotary tube, wherein a dish-shaped saddle is provided at at least two points on the rotary tube sleeve for receiving a cooling tube, each saddle having a closure bracket with openings therethrough for receiving bolts.
  • the closure bracket is preferably constructed in two parts and embraces the remaining circumference of the cooling tube not disposed within the dish-shaped saddle, the closure bracket constructed is a web shaped member and arranged on edge or upright with respect to the axis of the cooling tube.
  • This invention relates to a fastening device for cooling tubes which are distributed on the outlet end of a rotary tube, particularly a rotary kiln, and which are in connection with the interior of the rotary tube.
  • the invention relates to such constructions wherein for each cooling tube, as viewed in the axial direction of the kiln, at at least two points on the sleeve of the rotary tube a dish-shaped saddle is fixed for receiving the cooling tube and has a cooperable closure bar or bracket which embraces the remaining circumference of the cooling tube.
  • the closure bar is preferably constructed in two parts and provided at both ends with holes therethrough for connection by means of bolts.
  • a fastening device of the aforementioned type is known for use in a rotary kiln from the French Pat. No. 1,558,158.
  • the so-called loose point in the known fastening device is formed by an annular, rigid holding element which receives the endof a cooling tube, the diameter of the ring being greater than the greatest possible outer diameter of the cooling tube sleeve.
  • the cooling tube will be shifted in the axial direction upon changes in length due to fluctuations in temperature in the annularly shaped holding element, which in a rotating kiln is facilitated due to the constant migration of the output point in the circumferential direction. If, however, the kiln is not continuously operated, for example, and for this reason can not always rotate slowly, the cooling tubes suspended directly beneath the lower side of the-rotary kiln, also on the contact point farthest removed from the kiln sleeve, lie in the annularly shaped holding element.
  • the foregoing object is realized through the provision of a closure bracket or bar which is constructed as a web shaped member and which is arranged on edge or upright with respect to the axis of the cooling tube.
  • a closure bracket or bar which is constructed as a web shaped member and which is arranged on edge or upright with respect to the axis of the cooling tube.
  • the closure bracket has openings through each end thereof for receiving bolts, the holes having, at least in the radial direction as referred to the kiln axis, a greater dimension than in the circumferential direction.
  • these are elongate holes having end radii corresponding to the radii of the bolts to be received thereby.
  • This arrangement provides the advantage that the bolt connection between the closure bracket and the saddle may be tightly tensioned in the radial direction; however, the arrangement is effectively a hinge connection with respect to axial forces, whereby the relatively small width of the web shaped closure bracket, as viewed in the axial direction of the rotary tube, has an especially advantageous effect and provides a tilting of the closure bracket as a result of changes in length of the pertaining cooling tube so that the edge pressures of the walls of the holes in the closure brackets upon the bolts extending therethrough are or may be eliminated.
  • cams are arranged on the outer surface of a cooling tube, the cams being in a form-locking connection with the closure bracket.
  • the saddles which are disposed adjacent each other in the circumferential direction on the rotary tube sleeve are arranged in at least two rows and are offset with re- I ing the costs upon finishing, the cooling tubes may be disposed more closely on'the rotary tube sleeve, and accordingly the circumferential diameter of the entire cooling arrangement can be decreased.
  • the adjacent offset saddles are connected in each case with each other in the area of the overlap by at least one web plate.
  • This construction is substantially favorable for. the construction of the individual saddles, particularly with respect tostresses in the axial direction in that the connection of the web plates between the saddles provides an appreciable stiffening due to the resulting double-T or box-section formed by this construction.
  • This manner of construction permits the formation of each saddle by a narrow web plate extending in the circumferential direction on the kiln tube, which is provided with a wider supporting surface solely on the contact surface with the cooling tube sleeve. Forces occurring in the axial direction are introduced practically without deformation of the saddle at the overlapping points about the rotary tube sleeve.
  • FIG. 1 is a partial cross sectional view through a rotary kiln constructed in accordance with the principles of the present invention
  • FIG. 2 is a partial longitudinal section taken generally along the line II-II of FIG. 1;
  • FIG. 3 is a radially inwardly looking view of a saddle constructed in accordance with the present invention and shown with the cooling tube and closure bracket removed.
  • each saddle 2 comprises a web shaped plate 3 which is cut out somewhat semicircularly on the side facing the cooling tube.
  • the cut out or opening is provided with a wide supporting sheet metal 'member 4 in order to attain a wide supporting surface sufficient for the sliding movement which takes place at this point.
  • the saddles are provided with holes 5 extending therethrough for receiving bolts 6.
  • Each closure bracket 7 comprises two parts arranged to pivot about the bolts 6 and form a circular opening with the respective member 4. At least two such fastening devices are arranged consecutively as viewed in the axial direction of the rotary kiln for receiving a cooling tube 8.
  • one of the fastening devices preferably that in the area of the cooling tube inlet, serves as a fixed point, while the fastening device lying behind the latter in the axial direction serves as a loose point.
  • a cam 11 is provided on each side of a respective closure bracket in the area of the tightener or spanner 9 and fixed to the respective cooling tube to provide a form-locking connection between the cooling tube and the closure bracket.
  • a hole 12 is additionally provided at each end of each closure bracket in an elongate form so that it has a larger dimension in the radial'direction of the kiln than the diameter of the respectivebolt 6.
  • the opening or hole 12 is preferably constructed as an elongate hole, whereby the radius at each end thereof corresponds to the radius of the bolt in order to attain a support on the entire contact surface between the bolt and the hole.
  • this construction causes a tilting of the closure bracket in the area of the connection with the bolts 6 (compare the arrow 18in FIG. 2) as a result of fluctuations in temperature and the locking of the cams 11 with the closure bracket. Accordingly, between the outer area of the closure bracket and the cooling tubes, no relative movement occurs and no frictional forces are established. Frictional forces derived from the rotary kiln sleeve may accordingly occur solely between the supporting surface 4 of the saddle 2 and the cooling tube sleeve 8.
  • the tilting movement resulting from such frictional forces with respect to the kiln sleeve may accordingly have no greater lever arm than corresponds to the middle spacing h of the connection bolt to the kiln sleeve because ofthe hinged connection of the closure bracket with the saddle.
  • the spacing h is additionally dimensionedto particular advantage so that it lies on the connecting line between each two center axis points of adjacent cooling tubes.
  • the saddles each comprise a web shaped plate 3 fixed on edge or upright on the kiln sleeve and a somewhat semicircularly shaped section which carries a supporting sheet metal member 4.
  • the support in the axial direction takes place, for example, by means of radially aligned gussets 13 and 14 disposed below the cooling tube axis.
  • those saddles which lie adjacent each other in the circumferential direction are arranged offset in two rows and in each case overlap at their ends.
  • the web plates 3 are connected in the area of such overlaps by means of at least one web plate 15 which extends in the axial direction of the rotary tube to connect the two members 3, 3' which lie adjacent one another. Because of this, a double-T, or upon utilization of two web plates, a box-section results at the overlaps which causes an appreciable stiffening of the saddle in the axial direction and, accordingly, axial forces may be in-' troduced practically without deformation of the saddles, even in the kiln sleeve.
  • the earns 11 in the area of the tightener or spanner 9 of the closure brackets 7 may be eliminated.
  • recesses 16 may be provided in the supporting member 40f each saddle for engaging cams 17 (shown in broken lines) fixed on the cooling tube sleeve.
  • a fastening device for cooling tubes which are uniformly distributed about the circumference on the outlet end of a rotary tube, at least two fastening devices provided in an axial spaced relationship for each cooling tube, said fastening device comprising: a dishshaped saddle for receiving and embracing a portion of the circumference of a cooling tube, and a web-shaped closure bracket including two parts each arranged on edge with respect to the axis of the cooling tube and loosely pivotally connected to said saddle for embracing the remaining circumference of the cooling tube.
  • a fastening device comprising a bolt and a hole extending through the end of said bracket part in the axial direction for receiving said bolt, said hole having a greater dimension in the radial direction than the diameter of said bolt.
  • a fastening device comprising cams fixed to the outer surface of the cooling tube for forming a form-locking connection with said closure bracket.
  • a fastening device for cooling tubes which are uniformly distributed about the circumference on the outlet end of a rotary tube, at least two fastening devices provided in an axial spaced relationship for each cooling tube, said fastening device comprising: a dishshaped saddle for receiving and embracing a portion of the circumference of a cooling tube, and a web-shaped closure bracket including two parts each arranged on edge with respect to the axis of the cooling tube and pivotally connected to said saddle for embracing the remaining circumference of the cooling tube, adjacent ones of said saddles arranged offset with respect to each other in at least two rows.
  • a fastening device wherein adjacent offset ones of said saddles extend circumferentially so as to overlap each other as viewed in the axial direction, and comprising at least one web plate in the area of such overlap extending in the axial direction and connecting said adjacent saddles.
  • a fastening device wherein said saddles each extend circumferentially so that adjacent saddles overlap as viewed in the axial direction of the rotary tube, and wherein the pivotal connection of adjacent closure bracket parts include a common bolt extending through such adjacent parts and the overlapping portions of said adjacent saddles.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Furnace Details (AREA)
  • Manufacture Of Iron (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
US00386754A 1972-08-12 1973-08-08 Fastening device for cooling tubes of a satellite cooler,particularly a rotary kiln satellite cooler Expired - Lifetime US3840335A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2239752A DE2239752C3 (de) 1972-08-12 1972-08-12 Befestigungseinrichtung für Satellitenkühlrohre eines Drehrohofens

Publications (1)

Publication Number Publication Date
US3840335A true US3840335A (en) 1974-10-08

Family

ID=5853421

Family Applications (1)

Application Number Title Priority Date Filing Date
US00386754A Expired - Lifetime US3840335A (en) 1972-08-12 1973-08-08 Fastening device for cooling tubes of a satellite cooler,particularly a rotary kiln satellite cooler

Country Status (14)

Country Link
US (1) US3840335A (cs)
JP (1) JPS5641911B2 (cs)
AT (2) AT321807B (cs)
BE (1) BE803516A (cs)
BR (1) BR7306095D0 (cs)
CA (1) CA1009840A (cs)
CS (2) CS188169B2 (cs)
DE (1) DE2239752C3 (cs)
DK (1) DK131520B (cs)
ES (1) ES417615A1 (cs)
FR (2) FR2200954A5 (cs)
GB (2) GB1438992A (cs)
IT (1) IT990404B (cs)
ZA (2) ZA74101B (cs)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975147A (en) * 1974-05-17 1976-08-17 Polysius Ag Rotary kiln
US4005980A (en) * 1974-09-19 1977-02-01 Polysius Ag Satellite tube support
US4008995A (en) * 1975-01-14 1977-02-22 Polysius Ag Rotary kiln construction
US4045161A (en) * 1974-12-13 1977-08-30 Polysius Ag Rotary kiln having a planetary row of cooler tubes
US4101268A (en) * 1975-11-17 1978-07-18 F. L. Smidth & Co. Rotary kiln with planetary cooler

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2951687A1 (de) * 1979-12-21 1981-07-02 Bühler-Miag GmbH, 3300 Braunschweig Halterung fuer die kuehlrohre eines drehrohrofen-satellitenkuehlers
DE3024802A1 (de) * 1980-07-01 1982-01-28 Krupp Polysius Ag, 4720 Beckum Planetenkuehler

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975147A (en) * 1974-05-17 1976-08-17 Polysius Ag Rotary kiln
US4005980A (en) * 1974-09-19 1977-02-01 Polysius Ag Satellite tube support
US4045161A (en) * 1974-12-13 1977-08-30 Polysius Ag Rotary kiln having a planetary row of cooler tubes
US4008995A (en) * 1975-01-14 1977-02-22 Polysius Ag Rotary kiln construction
US4101268A (en) * 1975-11-17 1978-07-18 F. L. Smidth & Co. Rotary kiln with planetary cooler

Also Published As

Publication number Publication date
CS188172B2 (en) 1979-02-28
JPS5641911B2 (cs) 1981-10-01
BR7306095D0 (pt) 1974-06-27
ES417615A1 (es) 1976-02-16
ZA735496B (en) 1974-08-28
ZA74101B (en) 1974-11-27
DE2239752A1 (de) 1974-02-21
IT990404B (it) 1975-06-20
CS188169B2 (en) 1979-02-28
JPS4959829A (cs) 1974-06-11
FR2199100B1 (cs) 1975-03-21
AT321806B (de) 1975-04-25
FR2199100A1 (cs) 1974-04-05
CA1009840A (en) 1977-05-10
AT321807B (de) 1975-04-25
BE803516A (fr) 1973-12-03
DK131520C (cs) 1975-12-15
DK131520B (da) 1975-07-28
GB1438991A (en) 1976-06-09
DE2239752C3 (de) 1980-08-28
FR2200954A5 (cs) 1974-04-19
DE2239752B2 (cs) 1974-10-10
GB1438992A (en) 1976-06-09

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