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EP0049541A1 - Installation for the thermal treatment of bulk materials in circulating troughs equipped with gas-permeable bottoms - Google Patents

Installation for the thermal treatment of bulk materials in circulating troughs equipped with gas-permeable bottoms Download PDF

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Publication number
EP0049541A1
EP0049541A1 EP81201034A EP81201034A EP0049541A1 EP 0049541 A1 EP0049541 A1 EP 0049541A1 EP 81201034 A EP81201034 A EP 81201034A EP 81201034 A EP81201034 A EP 81201034A EP 0049541 A1 EP0049541 A1 EP 0049541A1
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EP
European Patent Office
Prior art keywords
troughs
gas
grinding
seals
cut
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.)
Withdrawn
Application number
EP81201034A
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German (de)
French (fr)
Inventor
Klaus Dr. Möller
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.)
TKV Transportanlagen Konstruktions und Vertriebd GmbH
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TKV Transportanlagen Konstruktions und Vertriebd GmbH
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Application filed by TKV Transportanlagen Konstruktions und Vertriebd GmbH filed Critical TKV Transportanlagen Konstruktions und Vertriebd GmbH
Publication of EP0049541A1 publication Critical patent/EP0049541A1/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02—Cooling
    • F27D15/0286—Cooling in a vertical, e.g. annular, shaft

Definitions

  • the invention relates to a device for the thermal treatment of lumpy material by means of gases passed through it, in particular for cooling and drying, consisting of a circumferential band of troughs with gas-permeable base plates which are supported on rails by means of running wheels and run on the rails, underneath and / or Gas hoods arranged above the base plates and grinding seals made of flexible material attached to the gas hoods for sealing the gaps between the troughs loaded with material and the gas hoods.
  • Hot bulk material in particular sinter thrown off by sintering machines, must be cooled before being transported on, which is generally carried out on rubber bands. In many cases, this happens for reasons of space in circular coolers or otherwise on straight coolers. Cooling air is pressed or sucked through the gas-permeable floors and the material lying on them from below or above. To prevent the escape of cooling air or the penetration of false air, it is necessary to seal the gap between the stationary gas hoods above or below the moving band of the troughs and the troughs or their supporting structure. This also applies to Heat treatments on such devices, such as. B. drying material using hot gases.
  • a circular cooler is known in which the cooling air is supplied under pressure from below.
  • the gap between the trough support structure and the wind boxes is sealed by sealing sleeves which are attached to the support frame, extend downwards and grind on the upper edge of sealing plates which are attached to the wind boxes.
  • the sealing sleeves must be pressed against the sealing plates against the excess pressure under the troughs.
  • the rollers and rails are inside the seal in the dust.
  • a circular cooler is known from DE-OS 28 44 227, in which the cooling air is supplied under pressure from below. Annular, bendable segments are attached to the wind boxes, under the inner edge of which sealing strips are attached. The sealing strips are pulled by their weight against the pressure of the cooling air onto a flange on the support frame of the troughs.
  • the invention has for its object to provide a seal that is not destroyed even with fluctuations in the course of the troughs in the vertical and horizontal directions and exerts a slight frictional engagement on the troughs.
  • abrasive seals are butted against the troughs with their free ends, which are cut at intervals outside the fastening with the gas hoods of the abrasive seals, each cut - as seen in the running direction of the troughs - on the free
  • the end of the grinding seal behind its clamping point in the attachment to the gas hood begins and runs at an angle unequal to 90 ° to the long sides of the grinding seals.
  • the troughs generally consist of a supporting structure which supports the gas-permeable base plates and the side walls of the troughs.
  • a trough In the case of straight belts, a trough generally forms a rigid unit and the material is ejected at the deflection point the troughs from the upper to the lower run.
  • the troughs In the case of round belts, the troughs form a circular ring and the rails are ejected by lowering the rails.
  • the troughs are connected at one end to the rigid support structure with an axis of rotation and run with the wheels attached to the other end into the rail lowering, whereby the unloading takes place.
  • the floor can only be lowered if the side walls are not rigidly connected to the floor.
  • the grinding seals consist of plates made of elastic material such as. B. elastomers.
  • the plates must have such stability that they remain in the vertical direction when clamped at the lower end.
  • the plates are attached to the gas hoods using a bracket. The plates are expediently first clamped in the holder and then the entire device is fastened to the gas hoods.
  • the free end of the grinding seals is either set to a sealing dimension of approximately 0.5 mm to the troughs or pushed up to the troughs. In the latter case, the lowest possible sealing dimension is set when there are fluctuations in the course of the troughs.
  • a preferred embodiment is that the beginning of the cut in the vertical projection is above or behind the clamping point of the neutral phase of the part of the grinding seal lying between two cuts.
  • the neutral phase of the parallelogram shaped parts of the grinding seals between two adjacent cuts lies approximately in the center line of the parallelogram.
  • the position of the beginning of the cut behind the clamping point of the neutral phase is again seen in the direction of the troughs. This keeps the wear of the grinding seal very low when it comes into contact with the troughs.
  • a preferred embodiment is that the obtuse angle of the cut to the long sides of the grinding seal is greater than 135 °. This keeps the wear on the grinding seal very low when it comes into contact with the troughs.
  • a preferred embodiment is that in a circular cooler, the troughs consist of an annular support frame and gas-permeable base plates attached to the support frame, which are folded down for emptying in rail depressions of the two circular rails, gas hoods for supplying cooling air under the support frame and the Bottom plates are arranged, the grinding seals are attached to the gas hoods and press with their free ends against the underside of the supporting structure.
  • This configuration makes the seal particularly suitable for round coolers with rail subsidence at the unloading point.
  • the relatively large fluctuations in the horizontal as well as in the vertical direction in the case of round coolers can be absorbed without warping and destroying the grinding seal, and the interruption at the unloading point does not result in any difficulty.
  • the grinding part 1 is clamped with its lower part 2 in the holder between the sheets 3a and 3b by means of a spacer 4 and screws 5.
  • the plate 3a has an elongated hole 6 and is fastened to the gas hood 8 by means of screws 7. The screws are not shown.
  • the part 9 of the grinding seal 1 lying outside the holder 3 a, 3 b is provided at intervals with parallel cuts 10. The beginning 11 of each cut 10 at the free end of the grinding seal 1 lies - seen in the direction of the troughs - behind its clamping point 12 in the holder 3a, 3b and in the vertical projection 13 above the clamping point 14 of the neutral phase 15 in the holder 3a, 3b .
  • the cuts 10 are arranged on the long sides of the grinding seal 1 with obtuse angles Of, greater than 135 ° (FIG. 4).
  • the free end of the grinding seal 1 is arranged bluntly without pressure under the supporting frame 16 of the troughs 17.
  • the support frame 16 is supported on the rails 20 via the axles 18 and rollers 19.
  • the troughs 21 in which the material 22 lies are arranged on the supporting frame 16 (the troughs are shown cut off in height). From the gas hood 23, the cooling air is pressed from below under pressure upwards through the material 22.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Furnace Details (AREA)
  • Tunnel Furnaces (AREA)

Abstract

Devices according to the application, in which treatment is carried out by means of gases passing through and which are used in particular for cooling and drying, consist of a rotating belt of troughs (17) having bottom plates which are permeable to gases and which are supported by means of running wheels (19) on rails (20) and run on said rails (20), gas hoods (23) disposed under and/or above the bottom plates, and sliding seals (1) of flexible material, fastened to the gas hoods (23), to seal the gaps between the troughs (17) loaded with material (22) and the gas hoods (23). In order to prevent the destruction of the seals (1) and to achieve slight frictional action on the troughs (17), the sliding seals (1) abut by their free ends against the troughs (17), those parts (9) of the sliding seals (1) which lie outside the fastening (3a, 3b) to the gas hoods (8, 23) being cut at intervals, each cut (10) beginning - viewed in the direction of movement of the troughs - at the free end of the sliding seal (1) behind its clamping point (12) in the fastening (3a, 3b) to the gas hood (23) and extending at an angle other than 90 degrees to the longitudinal sides of the sliding seals (1). <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zur thermischen Behandlung von stückigem Material mittels hindurchgeleiteter Gase, insbesondere zum Kühlen und Trocknen, bestehend aus einem umlaufenden Band von Trögen mit gasdurchlässigen Bodenplatten, die mittels,Laufrädern auf Schienen abgestützt werden und auf den Schienen laufen, unter und/oder über den Bodenplatten angeordneten Gashauben und an den Gashauben befestigten Schleifdichtungen aus flexiblem Material zur Abdichtung der Spalte zwischen den mit Material beladenen Trögen und den Gashauben.The invention relates to a device for the thermal treatment of lumpy material by means of gases passed through it, in particular for cooling and drying, consisting of a circumferential band of troughs with gas-permeable base plates which are supported on rails by means of running wheels and run on the rails, underneath and / or Gas hoods arranged above the base plates and grinding seals made of flexible material attached to the gas hoods for sealing the gaps between the troughs loaded with material and the gas hoods.

Heißes Schüttgut, insbesondere von Sintermaschinen abgeworfener Sinter, muß vor dem Weitertransport, der im allgemeinen auf Gummibändern erfolgt, abgekühlt werden. Dies geschieht in vielen Fällen aus Platzgründen in Rundkühlern oder sonst auf geraden Kühlern. Dabei wird Kühlluft durch die gasdurchlässigen Böden und das darauf liegende Material von unten oder oben gedrückt oder gesaugt. Zur Vermeidung des Austrittes von Kühlluft oder des Eindringens von Falschluft ist es erforderlich, den Spalt zwischen den stationären Gashauben über oder unter dem wandernden Band der Tröge und den Trögen bzw. deren Tragkonstruktion abzudichten. Dies gilt auch für Wärmebehandlungen auf solchen Apparaten, wie z. B. das Trocknen von Material mittels heißer Gase.Hot bulk material, in particular sinter thrown off by sintering machines, must be cooled before being transported on, which is generally carried out on rubber bands. In many cases, this happens for reasons of space in circular coolers or otherwise on straight coolers. Cooling air is pressed or sucked through the gas-permeable floors and the material lying on them from below or above. To prevent the escape of cooling air or the penetration of false air, it is necessary to seal the gap between the stationary gas hoods above or below the moving band of the troughs and the troughs or their supporting structure. This also applies to Heat treatments on such devices, such as. B. drying material using hot gases.

Aus der DE-PS 11 97 482 ist ein Rundkühler bekannt, bei dem die Zufuhr der Kühlluft unter Druck von unten erfolgt. Der Spalt zwischen dem Traggerüst der Tröge und den Windkästen wird durch Dichtungsmanschetten abgedichtet, die an dem Traggerüst befestigt sind, sich nach unten erstrecken und an der oberen Kante von Dichtplatten schleifen, die an den Windkästen befestigt sind. Die Dichtungsmanschetten müssen gegen den unter den Trögen herrschenden Überdruck mit einer Vorspannung an die Dichtplatten angedrückt werden. Die Laufrollen und Schienen liegen innerhalb der Dichtung im Staub.From DE-PS 11 97 482 a circular cooler is known in which the cooling air is supplied under pressure from below. The gap between the trough support structure and the wind boxes is sealed by sealing sleeves which are attached to the support frame, extend downwards and grind on the upper edge of sealing plates which are attached to the wind boxes. The sealing sleeves must be pressed against the sealing plates against the excess pressure under the troughs. The rollers and rails are inside the seal in the dust.

Aus der DE-PS 10 68 469 ist ein Rundkühler bekannt, bei dem die Kühlluft von oben durchgesaugt wird. Der Spalt wird durch Schleifplatten abgedichtet, die an der Gashaube befestigt sind und außen an den Seitenteilen der Tröge anliegen.From DE-PS 10 68 469 a circular cooler is known in which the cooling air is sucked through from above. The gap is sealed by sanding plates that are attached to the gas hood and that lie against the outside of the side parts of the troughs.

Aus der DE-OS 28 44 227 ist ein Rundkühler bekannt, bei dem die Kühlluft unter Druck von unten zugeführt wird. An den Windkästen sind kreisringförmige, biegbare Segmente befestigt, unter deren Innenrand Dichtleisten befestigt sind. Die Dichtleisten werden durch ihr Gewicht gegen den Druck der Kühlluft auf einen Flansch am Traggerüst der Tröge gezogen.A circular cooler is known from DE-OS 28 44 227, in which the cooling air is supplied under pressure from below. Annular, bendable segments are attached to the wind boxes, under the inner edge of which sealing strips are attached. The sealing strips are pulled by their weight against the pressure of the cooling air onto a flange on the support frame of the troughs.

Aus der US-PS 28 78 009 ist ein gerader Sinterkühler bekannt, bei dem die Kühlluft von oben durchgesaugt wird. Der Spalt wird durch flexible Dichtungsstreifen abgedichtet, die an der Gashaube befestigt sind und bogenförmig auf Flansche an den Seitenwänden der Tröge gedrückt werden. Flexible Dichtungsstreifen, die bogenförmig auf die Tröge gedrückt werden, sind auch für gerade Sintermaschinen bekannt (DE-OS 24 35 158, DE-AS 11 17 882).From US-PS 28 78 009 a straight sinter cooler is known in which the cooling air is sucked through from above. The gap is sealed by flexible sealing strips, which are attached to the gas hood and pressed in an arc on flanges on the side walls of the troughs. Flexible sealing strips that are pressed onto the troughs in an arc are also suitable for Sintering machines are known (DE-OS 24 35 158, DE-AS 11 17 882).

Diese Dichtungen unterliegen einem starken Verschleiß und üben, insbesondere wenn sie nicht aus metallischen Stoffen, sondern aus elastischen Stoffen bestehen, einen starken Reibschluß auf die Tröge bzw. deren Tragkonstruktion aus. Außerdem schwankt der geometrische Lauf des Bandes der Tröge sowohl in vertikaler als auch in horizontaler Richtung. Dies ist besonders bei runden Aggregaten der Fall. Dadurch werden die elastischen Dichtungen verworfen und abgerissen, während metallische Dichtungen deformiert werden.These seals are subject to heavy wear and, especially if they do not consist of metallic materials but of elastic materials, exert a strong frictional connection on the troughs or their supporting structure. In addition, the geometric course of the belt of the troughs fluctuates in both the vertical and horizontal directions. This is particularly the case with round units. As a result, the elastic seals are discarded and torn off, while metallic seals are deformed.

Der Erfindung liegt die Aufgabe zugrunde, eine Dichtung zu schaffen, die auch bei Schwankungen des Laufes der Tröge in vertikaler und horizontaler Richtung nicht zerstört wird und einen geringen Reibschluß auf die Tröge ausübt.The invention has for its object to provide a seal that is not destroyed even with fluctuations in the course of the troughs in the vertical and horizontal directions and exerts a slight frictional engagement on the troughs.

Die Lösung dieser Aufgabe erfolgt erfindungsgemäß dadurch, daß die Schleifdichtungen mit ihren freien Enden stumpf gegen die Tröge gesetzt werden, die außerhalb der Befestigung mit den Gashauben liegenden Teile der Schleifdichtungen in Abständen geschnitten sind, wobei jeder Schnitt - in Laufrichtung der Tröge gesehen - am freien Ende der Schleifdichtung hinter seinem Einspannpunkt in der Befestigung an der Gashaube beginnt, und zu den Längsseiten der Schleifdichtungen unter einen Winkel ungleich 90° verläuft.This object is achieved according to the invention in that the abrasive seals are butted against the troughs with their free ends, which are cut at intervals outside the fastening with the gas hoods of the abrasive seals, each cut - as seen in the running direction of the troughs - on the free The end of the grinding seal behind its clamping point in the attachment to the gas hood begins and runs at an angle unequal to 90 ° to the long sides of the grinding seals.

Die Tröge bestehen im allgemeinen aus einer Tragkonstruktion, welche die gasdurchlässigen Bodenplatten und die Seitenwände der Tröge trägt. Bei geraden Bändern bildet ein Trog im allgemeinen eine starre Einheit und der Abwurf des Materials erfolgt an der Umlenkstelle der Tröge vom Ober- in das Untertrum. Bei runden Bändern bilden die Tröge einen Kreisring und der Abwurf erfolgt durch Absenkungen der Schienen. Die Tröge sind an einem Ende mit der starren Tragkonstruktion mit einer Drehachse verbunden und laufen mit den am anderen Ende befestigten Laufrädern in die Schienenabsenkung, wodurch die Entladung erfolgt. Dabei kann nur der Boden abgesenkt werden, wenn die Seitenwände nicht mit dem Boden starr verbunden sind. Wenn die Dichtung zwischen einer unterhalb des Bandes angeordneten Gashaube und den Trögen erfolgt, ist sie zwischen den Laufrollen angeordnet, so daß diese nicht eingeschlossen sind. Wenn die Dichtung zwischen einer oberhalb des Bandes angeordneten Gashaube und den Trögen erfolgt, ist sie zwischen der Gashaube und der Oberseite der Seitenteile der Tröge angeordnet. Die Schleifdichtungen bestehen aus Platten aus elastischem Material wie z. B. Elastomere. Die Platten müssen eine solche Stabilität haben, daß sie bei einer Einspannung am unteren Ende in senkrechter Richtung stehen bleiben. Die Befestigung der Platten an den Gashauben erfolgt mittels einer Halterung. Zweckmäßigerweise werden die Platten erst in die Halterung eingespannt und dann die gesamte Vorrichtung an den Gashauben befestigt. Dadurch läßt sich der Abstand zwischen den Trögen und dem freien, geschnittenen Ende der Schleifdichtungen genau und einfach einstellen. Das freie Ende der Schleifdichtungen wird entweder auf ein Dichtmaß von etwa 0,5 mm zu den Trögen eingestellt oder bis an die Tröge geschoben. Im letzteren Fall stellt sich dann bei Schwankungen im Lauf der Tröge das geringstmögliche Dichtmaß ein.The troughs generally consist of a supporting structure which supports the gas-permeable base plates and the side walls of the troughs. In the case of straight belts, a trough generally forms a rigid unit and the material is ejected at the deflection point the troughs from the upper to the lower run. In the case of round belts, the troughs form a circular ring and the rails are ejected by lowering the rails. The troughs are connected at one end to the rigid support structure with an axis of rotation and run with the wheels attached to the other end into the rail lowering, whereby the unloading takes place. The floor can only be lowered if the side walls are not rigidly connected to the floor. If the seal is between a gas hood located below the belt and the troughs, it is placed between the rollers so that they are not included. If the seal is between a gas hood located above the belt and the troughs, it is located between the gas hood and the top of the side parts of the troughs. The grinding seals consist of plates made of elastic material such as. B. elastomers. The plates must have such stability that they remain in the vertical direction when clamped at the lower end. The plates are attached to the gas hoods using a bracket. The plates are expediently first clamped in the holder and then the entire device is fastened to the gas hoods. This allows the distance between the troughs and the free, cut end of the grinding seals to be set precisely and easily. The free end of the grinding seals is either set to a sealing dimension of approximately 0.5 mm to the troughs or pushed up to the troughs. In the latter case, the lowest possible sealing dimension is set when there are fluctuations in the course of the troughs.

Eine vorzugsweise Ausgestaltung besteht darin, daß der Beginn des Schnittes in der senkrechten Projektion über oder hinter dem Einspannpunkt der neutralen Phase des zwischen zwei Schnitten liegenden Teiles der Schleifdichtung liegt. Die neutrale Phase der parallelogrammförmigen Teile der Schleifdichtungen zwischen zwei benachbarten Schnitten liegt etwa in der Mittellinie des Parallelogramms. Die Lage des Beginns des Schnittes hinter dem Einspannpunkt der neutralen Phase ist wieder in Laufrichtung der Tröge gesehen. Dadurch wird die Beanspruchung der Schleifdichtung beim Kontakt mit den Trögen sehr gering gehalten.A preferred embodiment is that the beginning of the cut in the vertical projection is above or behind the clamping point of the neutral phase of the part of the grinding seal lying between two cuts. The neutral phase of the parallelogram shaped parts of the grinding seals between two adjacent cuts lies approximately in the center line of the parallelogram. The position of the beginning of the cut behind the clamping point of the neutral phase is again seen in the direction of the troughs. This keeps the wear of the grinding seal very low when it comes into contact with the troughs.

Eine vorzugsweise Ausgestaltung besteht darin, daß der stumpfe Winkel des Schnittes zu den Längsseiten der Schleifdichtung größer als 135° ist. Dadurch wird die Beanspruchung der Schleifdichtung beim Kontakt mit den Trögen sehr gering gehalten.A preferred embodiment is that the obtuse angle of the cut to the long sides of the grinding seal is greater than 135 °. This keeps the wear on the grinding seal very low when it comes into contact with the troughs.

Eine vorzugsweise Ausgestaltung besteht darin, daß bei einem Rundkühler die Tröge aus e nem kreisringförmigen Traggerüst und an dem Traggerüst befestigten gasdurchlässigen Bodenplatten bestehen, die zur Entleerung in Schienenabsenkungen der beiden kreisförmigen Schienen nach unten geklappt werden, Gashauben zur Zufuhr von Kühlluft unter dem Traggerüst und den Bodenplatten angeordnet sind, die Schleifdichtungen an den Gashauben befestigt sind und mit ihren freien Enden gegen die Unterseite des Traggerüstes drücken. Diese Ausgestaltung macht die Dichtung insbesondere für runde Kühler mit Schienenabsenkungen an der Entladestelle geeignet. Die bei runden Kühlern relativ großen Schwankungen sowohl in horizontaler als auch in vertikaler Richtung können ohne Verwerfung und Zerstörung der Schleifdichtung abgefangen werden, und auch die Unterbrechung an der Entladestelle ergibt keine Schwierigkeit.A preferred embodiment is that in a circular cooler, the troughs consist of an annular support frame and gas-permeable base plates attached to the support frame, which are folded down for emptying in rail depressions of the two circular rails, gas hoods for supplying cooling air under the support frame and the Bottom plates are arranged, the grinding seals are attached to the gas hoods and press with their free ends against the underside of the supporting structure. This configuration makes the seal particularly suitable for round coolers with rail subsidence at the unloading point. The relatively large fluctuations in the horizontal as well as in the vertical direction in the case of round coolers can be absorbed without warping and destroying the grinding seal, and the interruption at the unloading point does not result in any difficulty.

Die Erfindung wird an Hand der Figuren näher erläutert.The invention is explained in more detail with reference to the figures.

  • Fig. 1 ist ein teilweiser Querschnitt durch einen Trog eines Rundkühlers mit absenkbarer Bodenplatte und Zufuhr der Kühlluft unter Druck von unten;Fig. 1 is a partial cross section through a trough of a circular cooler with a lowerable base plate and supply of the cooling air under pressure from below;
  • Fig. 2 ist eine Seitenansicht einer Schleifdichtung in einer Halterung;Fig. 2 is a side view of a grinding seal in a holder;
  • Fig. 3 ist ein Schnitt A - B in Fig. 1;Fig. 3 is a section A - B in Fig. 1;
  • Fig. 4 ist eine Draufsicht auf eine Schleifdichtung.Figure 4 is a top view of an abrasive seal.

Die Schleifdichtung 1 ist mit ihrem unteren Teil 2 in der Halterung zwischen den Blechen 3a und 3b mit Hilfe eines Abstandshalters 4 und Schrauben 5 eingespannt. Das Blech 3a hat ein Langloch 6 und wird mittels Schrauben 7 an der Gashaube 8 befestigt. Die Schrauben sind nicht dargestellt. Der außerhalb der Halterung 3a, 3b liegende Teil 9 der Schleifdichtung 1 ist in Abständen mit parallel verlaufenden Schnitten 10 versehen. Der Beginn 11 jedes Schnittes 10 am freien Ende der Schleifdichtung 1 liegt - in Laufrichtung der Tröge gesehen - hinter seinem Einspannpunkt 12 in der Halterung 3a, 3b und in der senkrechten Projektion 13 über dem Einspannpunkt 14 der neutralen Phase 15 in der Halterung 3a, 3b. Die Schnitte 10 sind zu den Längsseiten der Schleifdichtung 1 mit stumpfen Winkeln Of, von größer als 135° angeordnet (Fig. 4). Das freie Ende der Schleifdichtung 1 wird stumpf ohne Druck unter dem Traggerüst 16 der Tröge 17 angeordnet. Bei einer Berührung mit den Trögen 17 kann die Schleifdichtung in Richtung der Pfeile ausweichen. Das Traggerüst 16 wird über die Achsen 18 und Laufrollen 19 auf den Schienen 20 abgestützt. Auf dem Traggerüst 16 sind die Tröge 21 angeordnet, in denen das Material 22 liegt (die Tröge sind in der Höhe abgeschnitten dargestellt). Aus der Gashaube 23 wird die Kühlluft von unten unter Druck nach oben durch das Material 22 gedrückt. Die Vorteile der Erfindung bestehen darin, daß die Schleifdichtung den Schwankungen der Tröge sowohl in vertikaler als auch in horizontaler Richtung selbstschützend ausweicht und dadurch nicht durch Verwerfungen zerstört wird, und daß die Dichtung in einfacher Weise hergestellt und auf das Dichtmaß eingestellt werden kann.The grinding part 1 is clamped with its lower part 2 in the holder between the sheets 3a and 3b by means of a spacer 4 and screws 5. The plate 3a has an elongated hole 6 and is fastened to the gas hood 8 by means of screws 7. The screws are not shown. The part 9 of the grinding seal 1 lying outside the holder 3 a, 3 b is provided at intervals with parallel cuts 10. The beginning 11 of each cut 10 at the free end of the grinding seal 1 lies - seen in the direction of the troughs - behind its clamping point 12 in the holder 3a, 3b and in the vertical projection 13 above the clamping point 14 of the neutral phase 15 in the holder 3a, 3b . The cuts 10 are arranged on the long sides of the grinding seal 1 with obtuse angles Of, greater than 135 ° (FIG. 4). The free end of the grinding seal 1 is arranged bluntly without pressure under the supporting frame 16 of the troughs 17. When touching the troughs 17, the grinding seal can deflect in the direction of the arrows. The support frame 16 is supported on the rails 20 via the axles 18 and rollers 19. The troughs 21 in which the material 22 lies are arranged on the supporting frame 16 (the troughs are shown cut off in height). From the gas hood 23, the cooling air is pressed from below under pressure upwards through the material 22. The advantages of the invention are that the grinding seal evades the fluctuations of the troughs in both the vertical and horizontal directions in a self-protecting manner and is not destroyed by warping, and that the seal can be produced in a simple manner and adjusted to the sealing dimension.

Claims (4)

1. Vorrichtung zur thermischen Behandlung von stückigem Material mittels hindurchgeleiteter Gase, insbesondere zum Kühlen und Trocknen, bestehend aus einem umlaufenden Band von Trögen mit gasdurchlässigen Bodenplatten, die mittels Laufrädern auf Schienen abgestützt werden und auf den Schienen laufen, unter und/oder über den Bodenplatten angeordneten Gashauben, und an den Gashauben befestigten Schleifdichtungen aus flexiblem Material zur Abdichtung der Spalte zwischen den mit Material beladenen Trögen und den Gashauben, dadurch gekennzeichnet, daß die Schleifdichtungen mit ihren freien Enden stumpf gegen die Tröge gesetzt werden, die außerhalb der Befestigung mit den Gashauben liegenden Teile der Schleifdichtungen in Abständen geschnitten sind, wobei jeder Schnitt - in Laufrichtung der Tröge gesehen - am freien Ende der Schleifdichtung hinter seinem Einspannpunkt in der Befestigung an der Gashaube beginnt und zu den Längsseiten der Schleifdichtungen unter einem Winkel ungleich 90° verläuft.1. Device for the thermal treatment of lumpy material by passing gases, in particular for cooling and drying, consisting of a circumferential band of troughs with gas-permeable base plates, which are supported on rails by means of impellers and run on the rails, under and / or above the base plates arranged gas hoods, and grinding seals attached to the gas hoods made of flexible material for sealing the gaps between the troughs loaded with material and the gas hoods, characterized in that the grinding seals with their free ends are butted against the troughs which are outside the fastening with the gas hoods horizontal parts of the grinding seals are cut at intervals, with each cut - viewed in the direction of travel of the troughs - starting at the free end of the grinding seal behind its clamping point in the attachment to the gas hood and leaving the longitudinal sides of the grinding seals at an angle unequal to 90 ° uft. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet. daß der Beginn des Schnittes in der senkrechten Projektion über oder hinter dem Einspannpunkt der neutralen Phase des zwischen zwei Schnitten liegenden Teiles der Schleifdichtung liegt.2. Device according to claim 1, characterized. that the beginning of the cut in the vertical projection lies above or behind the clamping point of the neutral phase of the part of the grinding seal lying between two cuts. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der stumpfe Winkel des Schnittes zu den Längsseiten der Schleifdichtung größer als 135° ist.3. Apparatus according to claim 1 or 2, characterized in that the obtuse angle of the cut to the long sides of the grinding seal is greater than 135 °. 4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß bei einem Rundkühler die Tröge aus einem kreisringförmigen Traggerüst und an dem Traggerüst befestigten gasdurchlässigen Bodenplatten bestehen, die zur Entleerung in Schienenabsenkungen der beiden kreisförmigen Schienen nach unten geklappt werden, Gashauben zur Zufuhr von Kühlluft unter dem Traggerüst und den Bodenplatten angeordnet sind, die Schleifdichtungen an den Gashauben befestigt sind und mit ihren freien Enden gegen die Unterseite des Traggerüstes drücken.4. Device according to one of claims 1 to 3, characterized in that in a circular cooler, the troughs consist of an annular support frame and gas-permeable base plates attached to the support frame, which are folded down for emptying in rail depressions of the two circular rails, gas hoods for supply of cooling air are arranged under the support structure and the base plates, the grinding seals are attached to the gas hoods and press with their free ends against the underside of the support structure.
EP81201034A 1980-10-02 1981-09-16 Installation for the thermal treatment of bulk materials in circulating troughs equipped with gas-permeable bottoms Withdrawn EP0049541A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803037222 DE3037222A1 (en) 1980-10-02 1980-10-02 DEVICE FOR THE THERMAL TREATMENT OF PIECE OF GOODS IN CIRCULAR TROUGHS WITH GAS-PERMANENT FLOORS
DE3037222 1980-10-02

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EP0049541A1 true EP0049541A1 (en) 1982-04-14

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EP81201034A Withdrawn EP0049541A1 (en) 1980-10-02 1981-09-16 Installation for the thermal treatment of bulk materials in circulating troughs equipped with gas-permeable bottoms

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EP (1) EP0049541A1 (en)
JP (1) JPS5790574A (en)
DE (1) DE3037222A1 (en)
ES (1) ES8401792A1 (en)
ZA (1) ZA816584B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011042100A1 (en) * 2009-10-08 2011-04-14 Outotec Oyj Sinter cooler with exchangeable seal
WO2011042102A1 (en) * 2009-10-08 2011-04-14 Outotec Oyj Sinter cooler with adjustable cooling gas seal
CN102121793A (en) * 2011-01-25 2011-07-13 宝鸡市晋旺达机械设备有限公司 Sealing device for sintering machine trolley and air box
CN102954692A (en) * 2012-11-23 2013-03-06 凌义德 Oil-free slideway sealing device of sintering machine
CN103925802A (en) * 2014-04-11 2014-07-16 攀钢集团西昌钢钒有限公司 Metal sealing device of trolley of annular cooler
WO2015180264A1 (en) * 2014-05-30 2015-12-03 福建冠福现代家用股份有限公司 Closed energy-saving tunnel kiln

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Publication number Priority date Publication date Assignee Title
DE102009048723B4 (en) * 2009-10-08 2015-06-11 Outotec Oyj sinter cooler
CN104132144B (en) * 2014-07-10 2016-03-23 宝鸡市晋旺达机械设备有限公司 Seal arrangement between circular cooler trolley and bellows
CN112923736B (en) * 2021-02-24 2022-07-19 山东钢铁股份有限公司 Sealing device for ring cooling trolley

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DE422512C (en) * 1925-12-04 Henry John Stehli Sealing for Roestoefen with movable stove
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FR2180302A5 (en) * 1972-04-11 1973-11-23 Koppers Gmbh Heinrich Cut-off arrangement - for separating iron ore sintering cooler from coolant air ducts
DE2435158A1 (en) * 1973-08-30 1975-03-06 Creusot Loire DEVICE FOR SINTERING ORES ON A CIRCULAR TRAVELING GRATE
DE2844227A1 (en) * 1978-10-11 1980-04-24 Metallgesellschaft Ag ROUND COOLER FOR HOT PIECE MATERIAL

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Publication number Priority date Publication date Assignee Title
DE422512C (en) * 1925-12-04 Henry John Stehli Sealing for Roestoefen with movable stove
DE1117882B (en) * 1959-09-22 1961-11-23 Mcdowell Company Inc Sealing of the wind boxes of sintering machines against the moving carriage
DE1197482B (en) * 1962-01-13 1965-07-29 Herbert Knaust Dr Ing Round conveyor for large quantities, especially hot bulk material
DE2145170A1 (en) * 1970-09-10 1972-04-20 Simon-Carves Ltd., Stockport, Cheshire (Grossbritannien) Device for the treatment of solids by exposure to gases
FR2180302A5 (en) * 1972-04-11 1973-11-23 Koppers Gmbh Heinrich Cut-off arrangement - for separating iron ore sintering cooler from coolant air ducts
DE2435158A1 (en) * 1973-08-30 1975-03-06 Creusot Loire DEVICE FOR SINTERING ORES ON A CIRCULAR TRAVELING GRATE
DE2844227A1 (en) * 1978-10-11 1980-04-24 Metallgesellschaft Ag ROUND COOLER FOR HOT PIECE MATERIAL

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2010305133B2 (en) * 2009-10-08 2015-01-22 Outotec Oyj Sinter cooler with adjustable cooling gas seal
WO2011042102A1 (en) * 2009-10-08 2011-04-14 Outotec Oyj Sinter cooler with adjustable cooling gas seal
DE102009048722A1 (en) * 2009-10-08 2011-04-21 Outotec Oyj sinter cooler
DE102009048724A1 (en) * 2009-10-08 2011-04-21 Outotec Oyj sinter cooler
EA019692B1 (en) * 2009-10-08 2014-05-30 Ототек Оюй Sinter cooler with exchangeable seal
WO2011042100A1 (en) * 2009-10-08 2011-04-14 Outotec Oyj Sinter cooler with exchangeable seal
AU2010305131B2 (en) * 2009-10-08 2015-03-12 Outotec Oyj Sinter cooler with exchangeable seal
CN102121793A (en) * 2011-01-25 2011-07-13 宝鸡市晋旺达机械设备有限公司 Sealing device for sintering machine trolley and air box
CN102121793B (en) * 2011-01-25 2012-05-23 宝鸡市晋旺达机械设备有限公司 Sealing device for sintering machine trolley and air box
CN102954692A (en) * 2012-11-23 2013-03-06 凌义德 Oil-free slideway sealing device of sintering machine
CN103925802A (en) * 2014-04-11 2014-07-16 攀钢集团西昌钢钒有限公司 Metal sealing device of trolley of annular cooler
CN103925802B (en) * 2014-04-11 2016-08-17 攀钢集团西昌钢钒有限公司 Circular cooler trolley elastic metallic sealing device
WO2015180264A1 (en) * 2014-05-30 2015-12-03 福建冠福现代家用股份有限公司 Closed energy-saving tunnel kiln

Also Published As

Publication number Publication date
ES505949A0 (en) 1983-04-16
ZA816584B (en) 1982-09-29
DE3037222A1 (en) 1982-04-29
JPS5790574A (en) 1982-06-05
ES8401792A1 (en) 1983-04-16

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