EP0233448A2 - Rotary drum - Google Patents

Rotary drum Download PDF

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Publication number
EP0233448A2
EP0233448A2 EP87100078A EP87100078A EP0233448A2 EP 0233448 A2 EP0233448 A2 EP 0233448A2 EP 87100078 A EP87100078 A EP 87100078A EP 87100078 A EP87100078 A EP 87100078A EP 0233448 A2 EP0233448 A2 EP 0233448A2
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EP
European Patent Office
Prior art keywords
rotary drum
housing
support frame
claws
rollers
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.)
Granted
Application number
EP87100078A
Other languages
German (de)
French (fr)
Other versions
EP0233448B1 (en
EP0233448A3 (en
Inventor
Lothar Kostrzewa-Kock
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.)
Cessione noell Service und Maschinentechnik GmbH
Original Assignee
Salzgitter Maschinenbau GmbH
Hazemag Dr E Andreas KG
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 Salzgitter Maschinenbau GmbH, Hazemag Dr E Andreas KG filed Critical Salzgitter Maschinenbau GmbH
Priority to AT87100078T priority Critical patent/ATE73924T1/en
Publication of EP0233448A2 publication Critical patent/EP0233448A2/en
Publication of EP0233448A3 publication Critical patent/EP0233448A3/en
Application granted granted Critical
Publication of EP0233448B1 publication Critical patent/EP0233448B1/en
Anticipated expiration legal-status Critical
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
    • F26B11/024—Arrangements for gas-sealing the drum
    • 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
    • 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
    • F27B7/22—Rotary drums; Supports therefor
    • F27B7/24—Seals between rotary and stationary parts

Definitions

  • the invention relates to a rotary drum, such as a rotary kiln, drum dryer or similar machine with a rotating drum which is traversed by hot gases during operation.
  • a rotary drum such as a rotary kiln, drum dryer or similar machine with a rotating drum which is traversed by hot gases during operation.
  • one has to seal between the rotary drum and an annularly enclosing one end of the rotary drum, fixed housing, z.
  • the feed housing for the material to be treated on a ring flange of the rotary drum a sealing ring, for. B.
  • a lip ring made of an elastic material which cooperates with an annular sealing surface of a part of the housing which is axially displaceable as a function of the axial movements of the rotary drum end having the sealing ring and which is caused by temperature changes and which acts via an axial compensator with an axial fixed part of the housing is connected (DE-AS 25 56 601).
  • the object of the invention is to store the axially displaceable part of the housing in such a way that the bearing can correspond not only to the axial movements but also to the changes in diameter of the housing part, which, given the considerable size of the drum diameter and thus also the housing, of up to 3 meters must be taken into account.
  • an advantageous embodiment of such a storage is given in that the claws are arranged on the support frame with the interposition of a slide, which can be moved by means of grooves and springs against the claws in the transverse direction and against the support frame in the longitudinal direction.
  • the arrangement can also be made so that the slide against the claws in the longitudinal direction and against the support frame in the transverse direction is displaceable.
  • the claws and the support frame generally do not consist of a material that is suitable for sliding surfaces, it is advantageous if a further slide piece is provided between the slide piece on the one hand and the claws or the support frame on the other hand, which can be attached to the claw or is firmly connected to the support frame.
  • the transmission of the longitudinal movement of the rotary drum end to the displaceable part of the housing can be in connection with the storage described above in Advantageously achieved in that with each claw is connected with respect to the longitudinal axis of the rotary drum in the longitudinal direction rail, which by means of two sliding blocks or rollers mounted on it encompasses an annular flange attached to the rotary drum on both sides. It is advantageous if the two sliding blocks or rollers of each rail grip around the ring flange with a play that corresponds to the existing or occurring wobble of the ring flange. This prevents the displaceable part of the housing from following every small axial movement which would be caused by a wobble of the ring flange, which can practically not be avoided given the size of the rotary drum diameter, with each drum revolution.
  • the sliding blocks or rollers on the rail are adjustable.
  • FIG. 1 shows the feeding end of a drum dryer, specifically in FIG. 1 in a side view and in FIG. 2 in partial section along the line II-II in FIG. 1.
  • the rotary drum is labeled 1. It is slightly inclined to the horizontal and is rotatable about its longitudinal axis by means of races and roller stations, not shown. It protrudes with its end, not shown, into an outlet housing through which the moist drying gases are drawn off, and with the illustrated end into a feed housing 2, to which the inlet pipe 3 for the hot drying gases connects. A pipe 4 leads into this, through which the material to be dried is given up.
  • the feed housing 2 is good compared to the rotary drum 1 sealed.
  • lip-like sealing rings are provided on an annular flange of the rotary drum located in front of the end face of the housing 2, which lie against a corresponding annular flange of this housing. These sealing rings are not suitable for absorbing the axial movement which the rotary drum end carries out as a result of the temperature increase occurring at the start of operation from room temperature to up to 600 ° C. if the rotary drum is firmly supported in the axial direction at the other end.
  • the feed housing 2 is therefore divided into two annular parts 5 and 6, which are connected to one another by an elastic compensator 7.
  • the part 5 is axially fixed on a support frame 8, while the part 6 is slidably mounted on the same frame.
  • part 6 of the feed housing 2 cannot move arbitrarily in the transverse direction, it is held in its central position by a further guide device, which consists of a claw 15 fastened to the housing part 6 at the bottom and two sliders 16, 17 which are guided by means of a spring 18 engaging in the longitudinal grooves of the two sliders.
  • the upper slider is firmly connected to the claw 15 and the lower to the frame 8, the arrangement being such that the two sliders have a certain distance from one another even in the warm operating condition, so that the support of the lateral claws 9 on the frame 8 is guaranteed.
  • a rail 19 parallel to the rotating drum axis which carries two rollers 20, 21 on its end facing away from the feed housing 2, which rollers can be rotated about axes extending transversely to the rotating drum axis. They are arranged at a distance from one another so that an annular flange 22 fastened on the outside on the rotary drum 1 can circulate between the two rollers.
  • the device works as follows:
  • the rotary drum 1 When the rotary drum 1 starts up, it is cold. Through the inlet pipe 3 of the feed housing 2, the hot drying gases get into the rotary drum and through this to the discharge end, where they exit through the exhaust housing, not shown. The rotary drum heats up and expands in the direction of the feed end, since it is fixedly supported in the axial direction at the outlet end.
  • the ring flange 22 comes to rest against the two rollers 20 and pushes the displaceable part 6 of the feed housing 2 and the ring-shaped contact surface for the sealing rings thereon by the same amount by the amount by which the ring flange carrying the sealing rings is located the rotating drum moves so that the distance between the ring surface and the ring flange practically does not change and the seal rings are not affected by temperature changes. This is known in the art.
  • the feeder housing Since the feeder housing is also heated to a great extent during operation, its diameter also changes not inconsiderably. This fact is taken into account by the coupling of the two upper sliders 12 with the middle sliders 11 by transverse springs 14, because this allows the upper sliders 12 to move outwards in accordance with the radial expansion of the feed housing without jamming occurring.
  • the sliders are designed to be substantially longer than they are wide.
  • the ring flange frees up after reaching a steady operating state, the movable housing part 6 remaining due to the weight-related frictional forces between the sliding surfaces, since no external forces act on it except for the negligible restoring force of the compensator.
  • the movements take place in the opposite way to the explanations for starting up.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

In a rotary drum, such as a rotary tube oven, drum drier or such like, sealing rings are provided for sealing between the rotary drum (1) and a fixed housing part (2), which sealing rings must not be subjected to excessive stresses resulting from axial movements of the rotary drum end to which the sealing rings are fitted. For this purpose, the fixed housing part (2) is designed such that it can move longitudinally and transversely by means of sliding elements (10, 11, 12) guided by slots and springs (13, 14). The longitudinal movement is transmitted by means of rails (19), fitted to the housing part, whose free ends each carry two rollers (20, 21), which are subject to the influence of a ring flange (22) on the rotary drum (1). <IMAGE>

Description

Die Erfindung betrifft eine Drehtrommel, wie Drehrohrofen, Trommel­trockner oder eine ähnliche Maschine mit einer umlaufenden Trommel, die während des Betriebes von heißen Gasen durchzogen wird. Bei derartigen Maschinen hat man zur Abdichtung zwischen der Drehtrommel und einem ein Ende der Drehtrommel ring­förmig umschließenden, fest angeordneten Gehäuse, z. B. dem Aufgabegehäuse für das zu behandelnde Gut, an einem Ringflansch der Drehtrommel einen Dichtungsring, z. B. einen aus einem elastischen Material bestehenden Lippen­ring, vorgesehen, der mit einer ringförmigen Dichtungs­fläche eines in Abhängigkeit von den durch Temperaturver­änderungen hervorgerufenen axialen Bewegungen des den Dichtungsring aufweisenden Drehtrommelendes axial ver­schiebbaren Teils des Gehäuses zusammenwirkt, der über einen in axialer Richtung wirksamen Kompensator mit einem axial festehenden Teil des Gehäuses verbunden ist (DE-AS 25 56 601).The invention relates to a rotary drum, such as a rotary kiln, drum dryer or similar machine with a rotating drum which is traversed by hot gases during operation. In such machines, one has to seal between the rotary drum and an annularly enclosing one end of the rotary drum, fixed housing, z. B. the feed housing for the material to be treated, on a ring flange of the rotary drum a sealing ring, for. B. a lip ring made of an elastic material is provided, which cooperates with an annular sealing surface of a part of the housing which is axially displaceable as a function of the axial movements of the rotary drum end having the sealing ring and which is caused by temperature changes and which acts via an axial compensator with an axial fixed part of the housing is connected (DE-AS 25 56 601).

Aufgabe der Erfindung ist es, den axial verschiebbaren Teil des Gehäuses so zu lagern, daß die Lagerung nicht nur den axialen Bewegungen sondern auch den Durchmesseränderungen des Gehäuseteils entsprechen kann, die bei der erheb­lichen Größe des Trommeldurchmessers und damit auch des Gehäuses von bis zu 3 Metern berücksichtigt werden müssen. Dies wird erfindungsgemäß dadurch erreicht, daß der ver­schiebbare Teil des Gehäuses beiderseits mit Pratzen ver­sehen ist, die auf einem Traggestell mit Bezug auf die Längsachse der Drehtrommel in Längs- und Querrichtung ver­schiebbar geführt sind.The object of the invention is to store the axially displaceable part of the housing in such a way that the bearing can correspond not only to the axial movements but also to the changes in diameter of the housing part, which, given the considerable size of the drum diameter and thus also the housing, of up to 3 meters must be taken into account. This is achieved according to the invention in that the displaceable part of the housing is provided on both sides with claws which are guided in a longitudinal and transverse direction on a support frame with respect to the longitudinal axis of the rotary drum.

Eine vorteilhafte Ausgestaltung einer solchen Lagerung ist dadurch gegeben, daß die Pratzen auf dem Traggestell unter Zwischenschaltung je eines Gleitstückes angeordnet sind, das mittels Nuten und Federn gegen die Pratzen in Quer­richtung und gegen das Traggestell in Längsrichtung ver­schiebbar ist. Die Anordnung kann auch so getroffen werden, daß das Gleitstück gegen die Pratzen in Längsrichtung und gegen das Traggestell in Querrichtung verschiebbar ist.An advantageous embodiment of such a storage is given in that the claws are arranged on the support frame with the interposition of a slide, which can be moved by means of grooves and springs against the claws in the transverse direction and against the support frame in the longitudinal direction. The arrangement can also be made so that the slide against the claws in the longitudinal direction and against the support frame in the transverse direction is displaceable.

Da die Pratzen und das Traggestell im allgemeinen nicht aus einem Material bestehen, das sich für Gleitflächen eignet, ist es vorteilhaft, wenn zwischen dem Gleitstück einerseits und den Pratzen bzw. dem Traggestell anderer­seits noch je ein weiteres Gleitstück vorgesehen ist, das mit der Pratze bzw. mit dem Traggestell fest verbunden ist.Since the claws and the support frame generally do not consist of a material that is suitable for sliding surfaces, it is advantageous if a further slide piece is provided between the slide piece on the one hand and the claws or the support frame on the other hand, which can be attached to the claw or is firmly connected to the support frame.

Es empfiehlt sich, den verschiebbaren Teil des Gehäuses zu­sätzlich zu den seitlichen Lagerungen mittig zu halten, um stärkere seitliche Bewegungen auf dem Traggestell zu ver­hindern, die eine unnötige und gegebenenfalls unzulässige Belastung des die beiden Gehäuseteile verbindenen Kom­pensators, eines aus elastischem Werkstoff bestehenden ringförmigen Verbindungsstückes, oder eine den Betrieb störende Berührung der rotierenden Trommel mit dem nicht rotierenden Gehäuse zur Folge haben würden. Hierzu dient eine in Längsrichtung der Drehtrommel verlaufende Feder, die nach oben in eine Nut eines unter dem verschiebbaren Gehäuseteile an diesem befestigten Schuhes mit einem die Wärmedehnung berücksichtigenden radialen Spiel und nach unten in eine entsprechende Nut des Traggestells ein­greift.It is advisable to hold the displaceable part of the housing in the middle in addition to the lateral bearings in order to prevent stronger lateral movements on the supporting frame, which unnecessarily and possibly impermissibly load the compensator connecting the two housing parts, an annular connecting piece made of elastic material, or would cause operation of the rotating drum to come into contact with the non-rotating housing. For this purpose, a spring running in the longitudinal direction of the rotary drum is used, which engages upwards in a groove of a shoe fastened to it under the displaceable housing parts with a radial play that takes thermal expansion into account and downwards in a corresponding groove in the supporting frame.

Die Übertragung der Längsbewegung des Drehtrommelendes auf den verschiebbaren Teil des Gehäuses läßt sich im Zu­sammenhang mit der vorstehend beschriebenen Lagerung in vorteilhafter Weise dadurch erreichen, daß mit jeder Pratze eine mit Bezug auf die Längsachse der Drehtrommel in Längs­richtung verlaufende Schiene verbunden ist, die mittels zweier an ihr gelagerter Gleitsteine oder Rollen einen auf der Drehtrommel befestigten Ringflansch beiderseits um­greift. Dabei ist es vorteilhaft, wenn die beiden Gleit­steine oder Rollen jeder Schiene den Ringflansch mit einem Spiel umgreifen, das dem vorhandenen oder im Betrieb auf­tretenden Taumelschlag des Ringflansches entspricht. Da­durch wird verhindert, daß der verschiebbare Teil des Ge­häuses jeder kleinen Axialbewegung folgt, die durch einen Taumelschlag des Ringflansches, der sich bei der erwähnten Größe des Drehtrommeldurchmessers praktisch nicht vermeiden läßt, bei jeder Trommelumdrehung hervorgerufen würde.The transmission of the longitudinal movement of the rotary drum end to the displaceable part of the housing can be in connection with the storage described above in Advantageously achieved in that with each claw is connected with respect to the longitudinal axis of the rotary drum in the longitudinal direction rail, which by means of two sliding blocks or rollers mounted on it encompasses an annular flange attached to the rotary drum on both sides. It is advantageous if the two sliding blocks or rollers of each rail grip around the ring flange with a play that corresponds to the existing or occurring wobble of the ring flange. This prevents the displaceable part of the housing from following every small axial movement which would be caused by a wobble of the ring flange, which can practically not be avoided given the size of the rotary drum diameter, with each drum revolution.

Damit das Spiel dem jeweiligen Taumelschlag angepaßt werden kann, sind die Gleitsteine oder Rollen an der Schiene ein­stellbar angeordnet.So that the game can be adapted to the respective wobble, the sliding blocks or rollers on the rail are adjustable.

In der Zeichnung ist das Aufgabeende eines Trommeltrockners dargestellt, und zwar in Fig. 1 in Seitenansicht und in Fig. 2 im Teilschnitt gemäß der Linie II-II in Fig. 1.The drawing shows the feeding end of a drum dryer, specifically in FIG. 1 in a side view and in FIG. 2 in partial section along the line II-II in FIG. 1.

Die Drehtrommel ist mit 1 bezeichnet. Sie ist leicht gegen die Horizontale geneigt und mittels nicht dargestellter Laufringe und Rollenstationen um ihre Längsachse drehbar gelagert. Sie ragt mit ihrem nicht dargestellten Ende in ein Auslaufgehäuse, durch das die feuchten Trocknungsgase abgesaugt werden, und mit dem dargestellten Ende in ein Aufgabegehäuse 2 hinein, an das sich das Eintrittsrohr 3 für die heißen Trocknungsgase anschließt. In dieses führt ein Rohr 4 hinein, durch das das zu trocknende Gut aufge­geben wird.The rotary drum is labeled 1. It is slightly inclined to the horizontal and is rotatable about its longitudinal axis by means of races and roller stations, not shown. It protrudes with its end, not shown, into an outlet housing through which the moist drying gases are drawn off, and with the illustrated end into a feed housing 2, to which the inlet pipe 3 for the hot drying gases connects. A pipe 4 leads into this, through which the material to be dried is given up.

Das Aufgabegehäuse 2 ist gegenüber der Drehtrommel 1 gut abgedichtet. Hierzu sind an einem vor der Stirnseite des Gehäuses 2 befindlichen Ringflansch der Drehtrommel lippenartige Dichtungsringe vorgesehen, die sich gegen einen entsprechenden Ringflansch dieses Gehäuses anlegen. Diese Dichtungsringe sind nicht geeignet, die axiale Be­wegung aufzunehmen, die das Drehtrommelende infolge der bei Betriebsbeginn erfolgenden Temperaturerhöhung von Raumtemperatur auf bis zu 600°C ausführt, wenn die Dreh­trommel am anderen Ende in axialer Richtung fest gelagert ist. Das Aufgabegehäuse 2 ist daher in zwei ringförmige Teile 5 und 6 unterteilt, die durch einen elastischen Kompensator 7 miteinander verbunden sind. Der Teil 5 ist dabei axial fest auf einem Traggestell 8 angeordnet, während der Teil 6 auf demselben Gestell verschiebbar gelagert ist.The feed housing 2 is good compared to the rotary drum 1 sealed. For this purpose, lip-like sealing rings are provided on an annular flange of the rotary drum located in front of the end face of the housing 2, which lie against a corresponding annular flange of this housing. These sealing rings are not suitable for absorbing the axial movement which the rotary drum end carries out as a result of the temperature increase occurring at the start of operation from room temperature to up to 600 ° C. if the rotary drum is firmly supported in the axial direction at the other end. The feed housing 2 is therefore divided into two annular parts 5 and 6, which are connected to one another by an elastic compensator 7. The part 5 is axially fixed on a support frame 8, while the part 6 is slidably mounted on the same frame.

Dies wird dadurch erreicht, daß zwischen dem Gestell 8 und zwei beiderseits an dem verschiebbaren Teil 6 des Gehäuses 2 angeordneten Pratzen 9 je drei Gleitstücke 10, 11, 12 angeordnet sind, von denen das unterste, mit dem Gestell 8 fest verbundene Gleitstück 10 mit dem mittleren Gleitstück 11 über eine in Längsrichtung der Drehtrommel verlaufende, in Nuten dieser beiden Gleitstücke eingreifende Feder 13 verbunden ist, so daß sich diese beiden Gleitstücke nur in Längsrichtung zueinander bewegen können, während das oberste, mit einer Pratze 9 des Aufgabegehäuses fest ver­bundene Gleitstück 12 mit dem mittleren Gleitstück 11 über in Querrrichtung verlaufende, in Nuten dieser beiden Gleitstücke eingreifende Federn 14 verbunden ist, so daß sich diese beiden Gleitstücke nur in Querrichtung zur Dreh­trommel 1 zueinander bewegen können.This is achieved in that three sliders 10, 11, 12 are arranged between the frame 8 and two claws 9 arranged on both sides on the displaceable part 6 of the housing 2, of which the lowest, with the frame 8 firmly connected slider 10 with the middle slider 11 is connected via a spring 13 running in the longitudinal direction of the rotary drum and engaging in grooves of these two sliders, so that these two sliders can only move in the longitudinal direction to one another, while the uppermost slider 12, which is firmly connected to a claw 9 of the feed housing, also the middle slider 11 is connected via springs 14 extending in the transverse direction and engaging in grooves of these two sliders, so that these two sliders can only move relative to one another in the transverse direction to the rotary drum 1.

Damit sich der Teil 6 des Aufgabegehäuses 2 nicht beliebig in Querrichtung bewegen kann, ist er in seiner mittigen Lage durch eine weitere Führungseinrichtung gehalten, die aus einer unten am Gehäuseteil 6 befestigten Pratze 15 und zwei Gleitstücken 16, 17 besteht, die mittels einer in Längs­nuten der beiden Gleitstücke eingreifenden Feder 18 geführt werden. Das obere Gleitstück ist dabei mit der Pratze 15 und das untere mit dem Gestell 8 fest verbunden, wobei die Anordnung so getroffen ist, daß die beiden Gleitstücke auch in betriebswarmem Zustand einen gewissen Abstand von­einander haben, damit die Auflage der seitlichen Pratzen 9 auf dem Gestell 8 gewährleistet ist.So that part 6 of the feed housing 2 cannot move arbitrarily in the transverse direction, it is held in its central position by a further guide device, which consists of a claw 15 fastened to the housing part 6 at the bottom and two sliders 16, 17 which are guided by means of a spring 18 engaging in the longitudinal grooves of the two sliders. The upper slider is firmly connected to the claw 15 and the lower to the frame 8, the arrangement being such that the two sliders have a certain distance from one another even in the warm operating condition, so that the support of the lateral claws 9 on the frame 8 is guaranteed.

Mit den seitlichen Pratzen 9 ist außerdem je eine zur Dreh­trommelachse parallele Schiene 19 verbunden, die an ihrem von dem Aufgabegehäuse 2 weggerichteten Ende zwei Rollen 20, 21 trägt, die um quer zur Drehtrommelachse verlaufende Achsen drehbar sind. Sie sind mit Abstand voneinander an­geordnet, so daß ein außen auf der Drehtrommel 1 befestig­ter Ringflansch 22 zwischen den beiden Rollen umlaufen kann.Also connected to the lateral claws 9 is a rail 19 parallel to the rotating drum axis, which carries two rollers 20, 21 on its end facing away from the feed housing 2, which rollers can be rotated about axes extending transversely to the rotating drum axis. They are arranged at a distance from one another so that an annular flange 22 fastened on the outside on the rotary drum 1 can circulate between the two rollers.

Die Wirkungsweise der Vorrichtung ist folgendermaßen:The device works as follows:

Beim Anfahren der Drehtrommel 1 ist diese kalt. Durch das Eintrittsrohr 3 des Aufgabegehäuses 2 gelangen die heißen Trocknungsgase in die Drehtrommel und durch diese hindurch zum Ausgabeende, wo sie durch das nicht gezeigte Abgasge­häuse austreten. Dabei erwärmt sich die Drehtrommel und dehnt sich, da sie am Auslaufende in axialer Richtung fest gelagert ist, in Richtung auf das Aufgabeende entsprechend aus. Dadurch kommt der Ringflansch 22 zur Anlage gegen die beiden Rollen 20 und schiebt über die Schienen 19 den ver­schiebbaren Teil 6 des Aufgabegehäuses 2 und die daran be­findliche ringförmige Anlagefläche für die Dichtungsringe um den gleichen Betrag vor sich her, um den sich der die Dichtungsringe tragende Ringflansch der Drehtrommel be­wegt, so daß der Abstand zwischen der Ringfläche und dem Ringflansch praktisch nich verändert und die Dichtungs­ ringe durch Temperaturveränderungen nicht beeinflußt werden. Dies ist bekannter Stand der Technik.When the rotary drum 1 starts up, it is cold. Through the inlet pipe 3 of the feed housing 2, the hot drying gases get into the rotary drum and through this to the discharge end, where they exit through the exhaust housing, not shown. The rotary drum heats up and expands in the direction of the feed end, since it is fixedly supported in the axial direction at the outlet end. As a result, the ring flange 22 comes to rest against the two rollers 20 and pushes the displaceable part 6 of the feed housing 2 and the ring-shaped contact surface for the sealing rings thereon by the same amount by the amount by which the ring flange carrying the sealing rings is located the rotating drum moves so that the distance between the ring surface and the ring flange practically does not change and the seal rings are not affected by temperature changes. This is known in the art.

Bei dieser Längsbewegung des Aufgabeendes der Drehtrommel 1 verschieben sich die beiden mit den Pratzen 9 fest verbun­denen oberen Gleitstücke 12 zusammen mit den mit ihnen über Querfedern 14 gekuppelten mittleren Gleitstücken 11 auf den unteren, mit dem Gestellt 8 fest verbundenen Gleit­stücken 10, wobei sie durch die in Längsrichtung verlaufen­den Federn 13 und die unter dem Aufgabegehäuseteil 6 ange­ordnete, ebenfalls in Längsrichtung verlaufende Feder 18 geführt werden.During this longitudinal movement of the feed end of the rotary drum 1, the two upper sliders 12 firmly connected to the claws 9 move together with the middle sliders 11 coupled to them via transverse springs 14 onto the lower sliders 10, which are firmly connected to the frame 8, whereby they pass through the in the longitudinal direction springs 13 and the arranged below the feed housing part 6, also extending in the longitudinal direction spring 18 are guided.

Da das Aufgabegehäuse selbst im Betrieb ebenfalls stark er­hitzt wird, verändert sich auch sein Durchmesser nicht un­beträchtlich. Diesem Umstand trägt die Koppelung der beiden oberen Gleitstücke 12 mit den mittleren Gleitstücken 11 durch querverlaufende Federn 14 Rechnung, denn dadurch können sich die oberen Gleitstücke 12 entsprechend der radialen Ausdehnung des Aufgabegehäuses nach außen bewegen, ohne daß Verklemmungen auftreten.Since the feeder housing is also heated to a great extent during operation, its diameter also changes not inconsiderably. This fact is taken into account by the coupling of the two upper sliders 12 with the middle sliders 11 by transverse springs 14, because this allows the upper sliders 12 to move outwards in accordance with the radial expansion of the feed housing without jamming occurring.

Da die Längsbewegungen im Verhältnis zu den Querbewegungen erheblich größer sind, ist es vorteilhaft, wenn die Gleit­stücke wesentlich länger als breit ausgebildet sind.Since the longitudinal movements are considerably larger in relation to the transverse movements, it is advantageous if the sliders are designed to be substantially longer than they are wide.

Durch das Spiel zwischen den Rollen 20, 21 und dem Ring­flansch 22 läuft sich der Ringflansch nach Erreichen eines stationären Betriebszustandes frei, wobei der bewegliche Gehäuseteil 6 durch die gewichtsbedingten Reibungskräfte zwischen den Gleitflächen stehenbleibt, da auf ihn keine äußeren Kräfte wirken außer der diesbezüglich vernach­lässigbaren Rückstellkraft des Kompensators. Beim Abfahren der Trommel laufen die Bewegungen analog zu den Erläute­rungen zum Anfahren in umgekehrter Weise ab.Due to the play between the rollers 20, 21 and the ring flange 22, the ring flange frees up after reaching a steady operating state, the movable housing part 6 remaining due to the weight-related frictional forces between the sliding surfaces, since no external forces act on it except for the negligible restoring force of the compensator. When the drum is moved down, the movements take place in the opposite way to the explanations for starting up.

Claims (6)

1. Drehtrommel, wie Drehrohrofen, Trommeltrockner o. dgl., bei der zur Abdichtung zwischen der Drehtrommel und einem ein Ende der Drehtrommel ringförmig umschließenden, fest angeordneten Gehäuse, z. B. dem Aufgabegehäuse für das zu behandelnde Gut, ein an einem Ringflansch der Dreh­trommel angeordneter Dichtungsring mit einer ringför­migen Dichtungsfläche eines in Abhängigkeit von den durch Temperaturänderungen hervorgerufenen axialen Be­wegungen des den Dichtungsring aufweisenden Drehtrommel­endes axial verschiebbaren Gehäuseteils zusammenwirkt, der über einen Kompensator mit einem axial feststehenden Gehäuseteil verbunden ist, dadurch gekennzeichnet, daß der verschiebbare Teil (6) des Gehäuses (2) beiderseits mit Pratzen (9) versehen ist, die auf einem Traggestell (8) mit Bezug auf die Längsachse der Drehtrommel (1) in Längs- und Querrichtung verschiebbar geführt ist.1. Rotary drum, such as a rotary kiln, drum dryer or the like, in which, for sealing between the rotary drum and an annularly enclosing one end of the rotary drum, a fixed housing, e.g. B. the feed housing for the material to be treated, a sealing ring arranged on an annular flange of the rotating drum with an annular sealing surface depending on the axial movements caused by temperature changes of the rotating drum end having the sealing ring axially displaceable housing part, which cooperates with an axially fixed via a compensator Housing part is connected, characterized in that the displaceable part (6) of the housing (2) is provided on both sides with claws (9) on a support frame (8) with respect to the longitudinal axis of the rotary drum (1) in the longitudinal and transverse directions is guided. 2. Drehtrommel nach Anspruch 1, da­durch gekennzeichnet, daß die Pratzen (9) auf dem Trag­gestell (8) unter Zwischenschaltung je eines Gleit­stückes (11) angeordnet sind, das mittels Nuten und Federn (14, 13) gegen die Pratzen bzw. ein an diesen befestigtes Gleitstück (12) in Querrichtung und gegen das Traggestell bzw. ein an diesem befestigtes Gleit­stück (10) in Längsrichtung verschiebbar ist.2. Rotary drum according to claim 1, characterized in that the claws (9) on the support frame (8) with the interposition of a slide (11) are arranged by means of grooves and springs (14, 13) against the claws or one this attached slider (12) in the transverse direction and against the support frame or a slider (10) attached to it can be moved in the longitudinal direction. 3. Drehtrommel nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der verschiebbare Teil (6) des Gehäuses (2) außerdem unten mittels einer in Längsrichtung verlaufenden Feder (18) an dem Tragge­stell (8) mittig geführt ist.3. Rotary drum according to claim 1 or 2, characterized in that the displaceable part (6) of the housing (2) also below by means of a Longitudinally running spring (18) is guided centrally on the support frame (8). 4. Drehtrommel nach einem der vorher­gehenden Ansprüche, dadurch gekennzeichnet, daß mit jeder Pratze (9) eine mit Bezug auf die Längsachse der Drehtrommel (1) in Längsrichtung verlaufende Schiene (19) verbunden ist, die mittels zweier an ihr gelager­ter Gleitsteine oder Rollen (20, 21) einen auf der Dreh­trommel befestigten Ringflansch (22) beiderseits um­greift.4. Rotary drum according to one of the preceding claims, characterized in that with each claw (9) with respect to the longitudinal axis of the rotary drum (1) extending in the longitudinal direction rail (19) is connected by means of two sliding blocks or rollers mounted on it 20, 21) encompasses an annular flange (22) attached to the rotary drum on both sides. 5. Drehtrommel nach Anspruch 4, da­durch gekennzeichnet, daß die beiden Gleitsteine oder Rollen (20, 21) jeder Schiene (19) den Ringflansch (22) mit einem Spiel umgreifen, das dem vorhandenen oder im Betrieb auftretenden Taumelschlag des Ringflansches entspricht.5. Rotary drum according to claim 4, characterized in that the two sliding blocks or rollers (20, 21) each rail (19) encompass the ring flange (22) with a game that corresponds to the existing or occurring wobble of the ring flange. 6. Drehtrommel nach Anspruch 5, da­durch gekennzeichnet, daß die Gleitsteine oder Rollen (20, 21) an der Schiene (19) einstellbar angeordnet sind.6. Rotary drum according to claim 5, characterized in that the sliding blocks or rollers (20, 21) on the rail (19) are arranged adjustable.
EP87100078A 1986-02-14 1987-01-07 Rotary drum Expired - Lifetime EP0233448B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87100078T ATE73924T1 (en) 1986-02-14 1987-01-07 ROTARY DRUM.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3604651 1986-02-14
DE19863604651 DE3604651A1 (en) 1986-02-14 1986-02-14 TURN DRUM

Publications (3)

Publication Number Publication Date
EP0233448A2 true EP0233448A2 (en) 1987-08-26
EP0233448A3 EP0233448A3 (en) 1989-03-15
EP0233448B1 EP0233448B1 (en) 1992-03-18

Family

ID=6294079

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87100078A Expired - Lifetime EP0233448B1 (en) 1986-02-14 1987-01-07 Rotary drum

Country Status (7)

Country Link
EP (1) EP0233448B1 (en)
JP (1) JPS62194183A (en)
AT (1) ATE73924T1 (en)
CS (1) CS266340B2 (en)
DE (2) DE3604651A1 (en)
PL (1) PL150554B1 (en)
TR (1) TR23248A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113237323A (en) * 2021-04-29 2021-08-10 安徽省泽乾冶金科技有限公司 Rotary kiln sealing device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4622408B2 (en) * 2004-09-16 2011-02-02 三菱マテリアル株式会社 Pressure vessel

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1500589A (en) * 1922-05-29 1924-07-08 Huron Ind Inc Gasket for rotating kilns
DE452953C (en) * 1927-11-25 Fried Krupp Grusonwerk Akt Ges Seal for drums rotating in a fixed housing
US2632658A (en) * 1948-12-30 1953-03-24 Traylor Engineering & Mfg Comp Sealing ring for rotary kilns
DE1802361B2 (en) * 1968-10-10 1972-11-23 Süddeutsche Kalkstickstoff-Werke AG, 8223 Trostberg; Eckert & Ziegler GmbH, 8832 Weißenburg SEALING DEVICE BETWEEN A FIXED HOUSING AND THE INLET AND / OR OUTLET OF A ROTATING TUBE
US3923450A (en) * 1973-06-09 1975-12-02 Kobe Steel Ltd Rotary kiln provided with seal mechanism
DE2556601B2 (en) * 1974-12-16 1979-01-25 Allis-Chalmers Corp., West Allis, Wis. (V.St.A.) Rotary kiln sealing device
DE3320192A1 (en) * 1983-06-03 1984-12-06 Kiener-Pyrolyse Gesellschaft für thermische Abfallverwertung mbH, 7000 Stuttgart Rotary drum for the treatment of bulk material

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1805548U (en) * 1956-06-19 1960-02-04 Buckau Wolf Maschf R HEATED ROTATING DRUM WITH SEALED FAILURE HOUSING.
DE1192967B (en) * 1961-08-26 1965-05-13 Beteiligungs & Patentverw Gmbh Sealing on rotary tubes

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE452953C (en) * 1927-11-25 Fried Krupp Grusonwerk Akt Ges Seal for drums rotating in a fixed housing
US1500589A (en) * 1922-05-29 1924-07-08 Huron Ind Inc Gasket for rotating kilns
US2632658A (en) * 1948-12-30 1953-03-24 Traylor Engineering & Mfg Comp Sealing ring for rotary kilns
DE1802361B2 (en) * 1968-10-10 1972-11-23 Süddeutsche Kalkstickstoff-Werke AG, 8223 Trostberg; Eckert & Ziegler GmbH, 8832 Weißenburg SEALING DEVICE BETWEEN A FIXED HOUSING AND THE INLET AND / OR OUTLET OF A ROTATING TUBE
US3923450A (en) * 1973-06-09 1975-12-02 Kobe Steel Ltd Rotary kiln provided with seal mechanism
DE2556601B2 (en) * 1974-12-16 1979-01-25 Allis-Chalmers Corp., West Allis, Wis. (V.St.A.) Rotary kiln sealing device
DE3320192A1 (en) * 1983-06-03 1984-12-06 Kiener-Pyrolyse Gesellschaft für thermische Abfallverwertung mbH, 7000 Stuttgart Rotary drum for the treatment of bulk material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113237323A (en) * 2021-04-29 2021-08-10 安徽省泽乾冶金科技有限公司 Rotary kiln sealing device

Also Published As

Publication number Publication date
DE3604651A1 (en) 1987-08-20
ATE73924T1 (en) 1992-04-15
PL150554B1 (en) 1990-06-30
CS266340B2 (en) 1989-12-13
CS75387A2 (en) 1988-09-16
EP0233448B1 (en) 1992-03-18
DE3777423D1 (en) 1992-04-23
EP0233448A3 (en) 1989-03-15
JPS62194183A (en) 1987-08-26
PL264098A1 (en) 1987-12-28
TR23248A (en) 1989-07-24

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