EP0634619B1 - Grate plate for a grate plate cooler - Google Patents

Grate plate for a grate plate cooler Download PDF

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Publication number
EP0634619B1
EP0634619B1 EP93111336A EP93111336A EP0634619B1 EP 0634619 B1 EP0634619 B1 EP 0634619B1 EP 93111336 A EP93111336 A EP 93111336A EP 93111336 A EP93111336 A EP 93111336A EP 0634619 B1 EP0634619 B1 EP 0634619B1
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EP
European Patent Office
Prior art keywords
grate
grate plate
plate
air
cooling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93111336A
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German (de)
French (fr)
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EP0634619B2 (en
EP0634619A1 (en
Inventor
Günter Dittmann
Ralf Filges
Claus Bauer
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Deutz AG
Original Assignee
Deutz AG
Kloeckner Humboldt Deutz AG
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Priority to EP93111336A priority Critical patent/EP0634619B2/en
Priority to AT93111336T priority patent/ATE123137T1/en
Priority to DE59300221T priority patent/DE59300221D1/en
Priority to ES93111336T priority patent/ES2073323T5/en
Priority to DK93111336T priority patent/DK0634619T4/en
Application filed by Deutz AG, Kloeckner Humboldt Deutz AG filed Critical Deutz AG
Publication of EP0634619A1 publication Critical patent/EP0634619A1/en
Publication of EP0634619B1 publication Critical patent/EP0634619B1/en
Publication of EP0634619B2 publication Critical patent/EP0634619B2/en
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Classifications

    • 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
    • F27D15/0206—Cooling with means to convey the charge
    • F27D15/0213—Cooling with means to convey the charge comprising a cooling grate
    • F27D15/022—Cooling with means to convey the charge comprising a cooling grate grate plates

Definitions

  • the invention relates to a grate plate for sliding grate coolers for cooling hot material, with upwardly open troughs arranged on the upper side of the grate plate, wherein a large number of the grate plates through which cooling air flows are fastened to alternately fixed grate plate carriers which can be moved back and forth in the direction of conveying of the grate.
  • the grate system In a sliding grate cooler, the grate system consists of a plurality of stationary and movable grate plate carriers, on each of which a plurality of grate plates provided with cooling air openings and through which cooling air flows from bottom to top are fastened. Seen in the direction of conveyance, stationary rows of grate plates alternate with rows of grate plates that can be moved back and forth, which are fastened together via their corresponding back and forth grate plate supports on one or more longitudinally movably driven thrust frames. Due to the common oscillating movement of all movable rows of grate plates, the goods to be cooled, e.g. B. the hot cement clinker emerging from a rotary kiln, transported in batches and cooled.
  • the goods to be cooled e.g. B. the hot cement clinker emerging from a rotary kiln
  • a radiator grate plate is known (DE-OS 38 12 425 or EP-A-0 337 383), the upper side of which has troughs which serve to receive and hold refrigerated goods, which then shields the grate plate from the hot material located above it. In this way, the grate plate should be protected and its service life should be extended.
  • U-shaped trough webs are welded into the grate plate body, the inside of the troughs which are open at the top being supplied with cooling air from the side by air outlet slots arranged far above the grate plate bottom plate.
  • the risk is not excluded that refrigerated goods received inside the troughs fall out through the side air outlet slots onto the base plate of the known grate plate construction, which leads to blockages in the air ducts and thus to a reduction in the cooling air throughput through the grate system.
  • the lateral air outlet slots in the troughs of the known grate plate are produced by partial overlaps of the upwardly open U-profiles, which can favor jamming of the refrigerated goods in the troughs; Chilled goods clamped in the troughs can then hinder the oscillating movement of the movable rows of grate plates.
  • the invention has for its object to avoid these disadvantages and to provide a grate plate with pockets or pockets for a sliding grate cooler, which has a long functionality due to its grate plate construction.
  • a plurality of cooling air ducts are arranged in the grate plate body parallel to the longitudinal axis of the grate plate and extending to the top of the grate plate and delimiting the grate plate troughs, which, like hollow body profiles, extend over the entire length of the grate plate up to the front plate face viewed in the grate thrust direction.
  • These cooling air ducts supply the grate plate troughs between them, which are used to hold and hold refrigerated goods, with cooling air from below, via air outlet slots running parallel to the longitudinal axis of the plate, which are arranged according to the invention in the partition walls separating the air ducts from the grate plate troughs directly above the base plate of the grate plate that the passage of refrigerated goods from the grate plate troughs into the adjacent air ducts can only lead to a slight accumulation of refrigerated goods on the base plate of the grate plate according to the invention, but not to a blockage of the air ducts.
  • the side walls of the grate plate troughs are essentially vertical and smooth, as a result of which the items to be cooled cannot get jammed, which could hinder the oscillating movement of the movable rows of grate plate. Because the air channels arranged parallel to the longitudinal axis of the plate extend as far as the front plate face viewed in the direction of the grate and where they open into a front cooling channel that is constantly traversed by cooling air and transverse to the longitudinal axis of the plate, this front grate plate end surface is always adequately cooled, and that in this area in the overlap gap between the moving and the non-moving rows of grate plates cooling air there serves at the same time as sealing air, which prevents clogging of the cover gap and penetration of clinker dust into the front cooling channel of the grate plate according to the invention.
  • the grate plate according to the invention for a sliding grate cooler has a grate plate body (1) which, for. B. can consist of a one-piece metallic casting, which is attached to the individually ventilated grate plate carrier (8).
  • a base plate (2) is firmly connected from below, for. B. screwed or welded.
  • the top of the grate plate has four troughs or pockets (5) which are open at the top and serve to receive and hold refrigerated goods, two troughs (5) lying next to one another on both sides of the longitudinal axis (18) of the grate plate.
  • Arranged in the grate plate body (1) above the base plate (2) parallel to the grate plate longitudinal axis (18) are three cooling air ducts (3) which extend to the grate plate top side (17) and delimit the troughs (5).
  • the partitions between the air channels (3) through which cooling air flows and the troughs (5) used to hold and hold refrigerated goods run parallel to the longitudinal axis of the plate (18) and have air outlet slots (4) which are directly above the Base plate (2) of the grate plate are arranged, d. H. the air outlet slots (4) are delimited by the base plate (2) and by the parts (6) of the partition walls between the air channels (3) and the troughs (5) which are bent or bent down towards the center of the troughs (5).
  • FIG. 4 the partitions between the air channels (3) through which cooling air flows and the troughs (5) used to hold and hold refrigerated goods run parallel to the longitudinal axis of the plate (18) and have air outlet slots (4) which are directly above the Base plate (2) of the grate plate are arranged, d. H. the air outlet slots (4) are delimited by the base plate (2) and by the parts (6) of the partition walls between the air channels (3) and the troughs (5) which are bent or bent down towards the center
  • a front cooling channel (12) is arranged between the troughs (5) and the front plate end face (11) as seen in the grate thrust direction, which is transverse to the longitudinal axis of the plate and which is provided through the three supply openings (14) from the air channels through a front partition (13) (3) receives the amount of cooling air required to cool the front plate face (11).
  • This quantity of cooling air diverted from the total cooling air flowing through the grate plate according to the invention leaves the front cooling channel (12) through small outlet openings (15) in the base plate (2).
  • This amount of cooling air indicated by (15a) has a share of approx. 5 to 10% of the total air throughput through the grate plate according to the invention, and at the same time it serves as sealing air in the cover slot (16) between the individual grate plate rows of the moving grate cooler.
  • the three cooling air supply openings (14) in the air channels (3) and troughs (5) to the front cooling channel dividing wall (13) in the upper region of the air channels (3), d. H. the supply openings (14) are flush with the upper inner surface of the air channels (3), and the dimensions correspond to their width and approximately 30% of the height of the air channels (3). 3 and 4 that the three channel openings (10) in the front side wall of the air chamber (9) correspond in cross section to the three air channels (3).
  • the air ducts (3) cannot become blocked, since refrigerated goods can only pass from the troughs (5) into the air ducts (3) to a small extent through the air outlet slots (4) due to the gravity of the refrigerated goods. Since the troughs (5) are otherwise surrounded by smooth vertical side walls, the items to be cooled in the troughs (5) cannot become jammed.
  • the front grate plate face (11) is sufficiently cooled by the partial cooling air quantity (15a) flowing through the front cooling channel (12), and since the cooling air supply openings (14) are arranged in the upper region of the air channels (3), it is prevented that into the air channels ( 3) Chilled goods are flushed into the front cooling channel (12). Finally, with the bottom plate (2) firmly attached to the grate plate body (1), it is possible to securely seal the underside of the grate plate.
  • the invention is not only applicable to grate plates for thrust grate coolers with individually ventilated hollow beam-shaped grate plate supports, but also for grate plates for thrust grate coolers that have a chamber-ventilated grate system. In the latter case, the base plate (2) must have perforations for the cooling air to pass through.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Furnace Details (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

In order to provide a grate plate construction for a grate plate cooler for cooling hot material such as, for example, cement clinker, which grate plate construction has at its top side hollows for receiving and retaining cooling material for the purpose of protecting the grate plate from thermal overstress, in which case these hollows are to be supplied with cooling air via cooling-air passages arranged in between and via air-outlet slots without the risk of them becoming clogged, a grate plate is proposed according to the invention in which several cooling-air passages (3) extending up to the top side (17) of the grate plate and delimiting the hollows (5) from one another are arranged in the grate plate body (1) parallel to the longitudinal axis (18) of the grate plate, and in which the dividing walls between the air passages (3) and the hollows (5) have air-outlet slots (4) which run parallel to the longitudinal axis (18) of the plate and are arranged directly above the baseplate (2) of the grate plate. <IMAGE>

Description

Die Erfindung betrifft eine Rostplatte für Schubrostkühler zum Abkühlen von heißem Gut, mit an der Rostplattenoberseite angeordneten nach oben offenen Mulden, wobei eine Vielzahl der von Kühlluft durchströmten Rostplatten auf abwechselnd ortsfesten und in Rostförderrichtung hin- und herbeweglichen Rostplattenträgern befestigt ist.The invention relates to a grate plate for sliding grate coolers for cooling hot material, with upwardly open troughs arranged on the upper side of the grate plate, wherein a large number of the grate plates through which cooling air flows are fastened to alternately fixed grate plate carriers which can be moved back and forth in the direction of conveying of the grate.

Bei einem Schubrostkühler besteht das Rostsystem aus einer Vielzahl von ortsfesten und beweglichen Rostplattenträgern, auf denen jeweils mehrere mit Kühlluftöffnungen versehene und im wesentlichen von unten nach oben von Kühlluft durchströmte Rostplatten befestigt sind. In Förderrichtung gesehen wechseln sich ortsfeste Rostplattenreihen mit hin- und herbeweglichen Rostplattenreihen ab, die über ihre entsprechend hin- und herbeweglichen Rostplattenträger auf einem oder mehreren längsbeweglich gelagerten angetriebenen Schubrahmen gemeinsam befestigt sind. Durch die gemeinsame oszillierende Bewegung aller beweglichen Rostplattenreihen wird das zu kühlende Gut, z. B. der aus einem Drehrohrofen austretende heiße Zementklinker, schubweise transportiert und dabei gekühlt.In a sliding grate cooler, the grate system consists of a plurality of stationary and movable grate plate carriers, on each of which a plurality of grate plates provided with cooling air openings and through which cooling air flows from bottom to top are fastened. Seen in the direction of conveyance, stationary rows of grate plates alternate with rows of grate plates that can be moved back and forth, which are fastened together via their corresponding back and forth grate plate supports on one or more longitudinally movably driven thrust frames. Due to the common oscillating movement of all movable rows of grate plates, the goods to be cooled, e.g. B. the hot cement clinker emerging from a rotary kiln, transported in batches and cooled.

Es ist eine Kühlerrostplatte bekannt (DE-OS 38 12 425 oder EP-A-0 337 383), deren Oberseite Mulden aufweist, die zum Aufnehmen und Festhalten von Kühlgut dienen, welches dann die Rostplatte von dem darüber befindlichen heißen Gut abschirmt. Auf diese Weise soll die Rostplatte geschont und deren Standzeit verlängert werden. Bei der bekannten mit Mulden versehenen Rostplatte sind in den Rostplattenkörper U-förmige Muldenstege eingeschweißt, wobei das Innere der nach oben offenen Mulden durch weit oberhalb der Rostplattenbodenplatte angeordnete Luftaustrittsschlitze von der Seite her mit Kühlluft versorgt wird. Dabei ist die Gefahr nicht ausgeschlossen, daß innerhalb der Mulden aufgenommenes Kühlgut durch die seitlichen Luftaustrittsschlitze hindurch nach außen auf die Bodenplatte der bekannten Rostplattenkonstruktion fällt, was zu Verstopfungen der Luftkanäle und damit zu einer Reduzierung des Kühlluftdurchsatzes durch das Rostsystem führt. Die seitlichen Luftaustrittsschlitze in den Mulden der bekannten Rostplatte sind durch teilweise Überdeckungen der nach oben offenen U-Profile erzeugt, wodurch ein Verklemmen des Kühlgutes in den Mulden begünstigt werden kann; in den Mulden festgeklemmtes Kühlgut kann dann die oszillierende Bewegung der beweglichen Rostplattenreihen behindern. Außerdem wird bei der bekannten Muldenrostplatte die in Rostschubrichtung gesehen besonders beanspruchte vordere Plattenstirnfläche nicht ausreichend gekühlt, wodurch die Gefahr der thermischen Überbeanspruchung der Rostplatte in diesem Bereich gegeben ist. US-A-5 174 747 beschreibt eine Kühlerrostplatte gemäß dem Oberbegriff des Anspruchs 1, die den gleichen Gefahren ausgesetzt ist.A radiator grate plate is known (DE-OS 38 12 425 or EP-A-0 337 383), the upper side of which has troughs which serve to receive and hold refrigerated goods, which then shields the grate plate from the hot material located above it. In this way, the grate plate should be protected and its service life should be extended. In the known troughed grate plate, U-shaped trough webs are welded into the grate plate body, the inside of the troughs which are open at the top being supplied with cooling air from the side by air outlet slots arranged far above the grate plate bottom plate. The risk is not excluded that refrigerated goods received inside the troughs fall out through the side air outlet slots onto the base plate of the known grate plate construction, which leads to blockages in the air ducts and thus to a reduction in the cooling air throughput through the grate system. The lateral air outlet slots in the troughs of the known grate plate are produced by partial overlaps of the upwardly open U-profiles, which can favor jamming of the refrigerated goods in the troughs; Chilled goods clamped in the troughs can then hinder the oscillating movement of the movable rows of grate plates. In addition, in the case of the known trough grate plate, the front plate end face which is particularly stressed in the direction of the grate thrust is not adequately cooled, as a result of which there is a risk of thermal overloading of the grate plate in this area. US-A-5 174 747 describes a radiator grille panel according to the preamble of claim 1 which is subject to the same hazards.

Der Erfindung liegt die Aufgabe zugrunde, diese Nachteile zu vermeiden und eine mit Mulden bzw. Taschen versehene Rostplatte für einen Schubrostkühler zu schaffen, der aufgrund seiner Rostplattenkonstruktion eine lange Funktionstüchtigkeit besitzt.The invention has for its object to avoid these disadvantages and to provide a grate plate with pockets or pockets for a sliding grate cooler, which has a long functionality due to its grate plate construction.

Diese Aufgabe wird mit den Maßnahmen des Kennzeichnungsteils des Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen sind in den Unteransprüchen angegeben.This object is achieved with the measures of the characterizing part of claim 1. Advantageous further developments are specified in the subclaims.

Bei der erfindungsgemäßen Rostplatte für einen Schubrostkühler sind im Rostplattenkörper parallel zur Rostplattenlängsachse mehrere bis zur Rostplattenoberseite reichende und die Rostplattenmulden voneinander abgrenzende Kühlluftkanäle angeordnet, die sich wie Hohlkörperprofile über die gesamte Länge der Rostplatte bis zu der in Rostschubrichtung gesehen vorderen Plattenstirnfläche erstrecken. Diese Kühlluftkanäle versorgen die dazwischen liegenden, zum Aufnehmen und Festhalten von Kühlgut dienenden Rostplattenmulden von unten mit Kühlluft, und zwar über parallel zur Plattenlängsachse verlaufende Luftaustrittsschlitze, die in den die Luftkanäle von den Rostplattenmulden abtrennenden Trennwänden erfindungsgemäß unmittelbar über der Bodenplatte der Rostplatte angeordnet sind, so daß Kühlgutdurchtritte aus den Rostplattenmulden in die benachbarten Luftkanäle nur zu einer geringen Kühlgutansammlung auf der Bodenplatte der erfindungsgemäßen Rostplatte führen können, nicht aber zu einer Verstopfung der Luftkanäle. Die Seitenwände der Rostplattenmulden sind im wesentlichen vertikal und glatt ausgebildet, wodurch es nicht zu einem Verklemmen des von den Mulden festgehaltenen Kühlgutes kommen kann, was die oszillierende Bewegung der beweglichen Rostplattenreihen behindern könnte. Weil die parallel zur Plattenlängsachse angeordneten Luftkanäle sich bis zu der in Rostschubrichtung gesehen vorderen Plattenstirnfläche erstrecken und dort in einen quer zur Plattenlängsachse liegenden ständig von Kühlluft durchströmten vorderen Kühlkanal einmünden, wird diese vordere Rostplattenstirnfläche immer ausreichend gekühlt, und die in diesem Bereich in den Überlappungsspalt zwischen den bewegten und den nichtbewegten Rostplattenreihen ausströmende Kühlluft dient dort gleichzeitig als Sperrluft, die ein Verstopfen des Überdeckungsspaltes und ein Eindringen von Klinkerstaub in den vorderen Kühlkanal der erfindungsgemäßen Rostplatte verhindert.In the grate plate for a sliding grate cooler according to the invention, a plurality of cooling air ducts are arranged in the grate plate body parallel to the longitudinal axis of the grate plate and extending to the top of the grate plate and delimiting the grate plate troughs, which, like hollow body profiles, extend over the entire length of the grate plate up to the front plate face viewed in the grate thrust direction. These cooling air ducts supply the grate plate troughs between them, which are used to hold and hold refrigerated goods, with cooling air from below, via air outlet slots running parallel to the longitudinal axis of the plate, which are arranged according to the invention in the partition walls separating the air ducts from the grate plate troughs directly above the base plate of the grate plate that the passage of refrigerated goods from the grate plate troughs into the adjacent air ducts can only lead to a slight accumulation of refrigerated goods on the base plate of the grate plate according to the invention, but not to a blockage of the air ducts. The side walls of the grate plate troughs are essentially vertical and smooth, as a result of which the items to be cooled cannot get jammed, which could hinder the oscillating movement of the movable rows of grate plate. Because the air channels arranged parallel to the longitudinal axis of the plate extend as far as the front plate face viewed in the direction of the grate and where they open into a front cooling channel that is constantly traversed by cooling air and transverse to the longitudinal axis of the plate, this front grate plate end surface is always adequately cooled, and that in this area in the overlap gap between the moving and the non-moving rows of grate plates cooling air there serves at the same time as sealing air, which prevents clogging of the cover gap and penetration of clinker dust into the front cooling channel of the grate plate according to the invention.

Die Erfindung und deren weitere Merkmale und Vorteile werden anhand des in den Figuren schematisch dargestellten Ausführungsbeispieles näher erläutert.The invention and its further features and advantages are explained in greater detail on the basis of the exemplary embodiment shown schematically in the figures explained.

Es zeigt:

  • Fig. 1 im linken Bereich einen Vertikallängsschnitt durch eine erfindungsgemäße Rostplatte längs der Linie F-F der Fig. 2, und im rechten Bereich einen Vertikallängsschnitt durch die erfindungsgemäße Rostplatte längs der Linie E-E der Fig. 2;
  • Fig. 2 ausschnittsweise den Schnitt durch die Rostplatte längs der Linie D-D der Fig. 1;
  • Fig. 3 den Querschnitt längs der Linie A-A der Fig. 1;
  • Fig. 4 den Querschnitt längs der Linie B-B der Fig. 1, und
  • Fig. 5 den Querschnitt längs der Linie C-C der Fig. 1.
It shows:
  • 1 shows a vertical longitudinal section through a grate plate according to the invention along the line FF of FIG. 2 in the left area, and a vertical longitudinal section through the grate plate according to the invention along the line EE of FIG. 2 in the right area;
  • 2 shows a section of the section through the grate plate along the line DD of FIG. 1;
  • 3 shows the cross section along the line AA of FIG. 1.
  • Fig. 4 shows the cross section along the line BB of Fig. 1, and
  • 5 shows the cross section along the line CC of FIG. 1st

Nach Fig. 1 weist die erfindungsgemäße Rostplatte für einen Schubrostkühler einen Rostplattenkörper (1) auf, der z. B. aus einem einteiligen metallischen Gußstück bestehen kann, welches an dem einzeln belüfteten Rostplattenträger (8) befestigt ist. An den vom Rostplattenträger (8) nach vorne in Schubrichtung des Schubrostkühlers auskragenden Teil des Rostplattenkörpers (1) ist von unten eine Bodenplatte (2) fest verbunden, z. B. angeschraubt oder angeschweißt. Die Rostplattenoberseite weist im Ausführungsbeispiel vier nach oben offene und zur Aufnahme und zum Festhalten von Kühlgut dienende Mulden bzw. Taschen (5) auf, wobei jeweils zwei Mulden (5) zu beiden Seiten der Längsachse (18) der Rostplatte nebeneinander liegen. Im Rostplattenkörper (1) sind oberhalb der Bodenplatte (2) parallel zur Rostplattenlängsachse (18) drei bis zur Rostplattenoberseite (17) reichende und die Mulden (5) voneinander abgrenzende Kühlluftkanäle (3) angeordnet.1, the grate plate according to the invention for a sliding grate cooler has a grate plate body (1) which, for. B. can consist of a one-piece metallic casting, which is attached to the individually ventilated grate plate carrier (8). On the part of the grate plate body (1) projecting forward from the grate plate support (8) in the direction of thrust of the thrust grate cooler, a base plate (2) is firmly connected from below, for. B. screwed or welded. In the exemplary embodiment, the top of the grate plate has four troughs or pockets (5) which are open at the top and serve to receive and hold refrigerated goods, two troughs (5) lying next to one another on both sides of the longitudinal axis (18) of the grate plate. Arranged in the grate plate body (1) above the base plate (2) parallel to the grate plate longitudinal axis (18) are three cooling air ducts (3) which extend to the grate plate top side (17) and delimit the troughs (5).

Wie insbesondere aus Fig. 4 hervorgeht, weisen die Trennwände zwischen den von Kühlluft durchströmten Luftkanälen (3) und den zum Aufnehmen und Festhalten von Kühlgut dienenden Mulden (5) parallel zur Plattenlängsachse (18) verlaufende Luftaustrittsschlitze (4) auf, die unmittelbar über der Bodenplatte (2) der Rostplatte angeordnet sind, d. h. die Luftaustrittsschlitze (4) werden begrenzt von der Bodenplatte (2) und von den unten in Richtung zum Zentrum der Mulden (5) abgeknickten bzw. abgebogenen Teilen (6) der Trennwände zwischen den Luftkanälen (3) und den Mulden (5). Wie ebenfalls aus Fig. 4 hervorgeht, sind auf der Bodenplatte (2) in der Mitte der Mulden (5) parallel zu den Luftaustrittsschlitzen (4) bzw. der Plattenlängsachse (18) verlaufende sich nach oben erhebende vorspringende Leisten als Kühlluftleiteinrichtungen (7) angeordnet, welche die aus den Luftaustrittsschlitzen (4) horizontal in die Mulden (5) ausströmende Kühlluft nach oben in die vertikale Richtung (7a) umlenken.As can be seen in particular from FIG. 4, the partitions between the air channels (3) through which cooling air flows and the troughs (5) used to hold and hold refrigerated goods run parallel to the longitudinal axis of the plate (18) and have air outlet slots (4) which are directly above the Base plate (2) of the grate plate are arranged, d. H. the air outlet slots (4) are delimited by the base plate (2) and by the parts (6) of the partition walls between the air channels (3) and the troughs (5) which are bent or bent down towards the center of the troughs (5). As can also be seen from FIG. 4, projecting ledges which project upwards and rise upwards as cooling air guiding devices (7) are arranged on the base plate (2) in the center of the depressions (5) parallel to the air outlet slots (4) or the longitudinal axis of the board (18) which deflect the cooling air flowing out of the air outlet slots (4) horizontally into the troughs (5) upwards in the vertical direction (7a).

Aus den Fig. 1 und 3 ergibt sich, daß die in die einzeln belüfteten Rostplattenträgern (8) eingeführte Kühlluft in die Luftkammer (9) gelangt, die durch drei Kanalöffnungen (10) mit den drei Luftkanälen (3) verbunden ist. Zwischen den Mulden (5) und der in Rostschubrichtung gesehen vorderen Plattenstirnfläche (11) ist ein vorderer Kühlkanal (12) angeordnet, der quer zur Plattenlängsachse liegt und der durch die in einer vorderen Trennwand (13) vorhandenen drei Zuführungsöffnungen (14) aus den Luftkanälen (3) die zur Kühlung der vorderen Plattenstirnfläche (11) erforderliche Kühlluftmenge erhält. Diese von der gesamten durch die erfindungsgemäße Rostplatte strömenden Kühlluft abgezweigte Kühlluftmenge verläßt den vorderen Kühlkanal (12) durch kleine Austrittsöffnungen (15) in der Bodenplatte (2). Diese mit (15a) angezeigte Kühlluftmenge hat einen Anteil von ca. 5 bis 10 % des gesamten Luftdurchsatzes durch die erfindungsgemäße Rostplatte, und sie dient gleichzeitig als Sperrluft im Überdeckungsschlitz (16) zwischen den einzelnen Rostplattenreihen des Schubrostkühlers. Wie aus Fig. 5 hervorgeht befinden sich die drei Kühlluftzuführungsöffnungen (14) in der die Luftkanäle (3) und Mulden (5) zum vorderen Kühlkanal abgrenzenden Trennwand (13) im oberen Bereich der Luftkanäle (3), d. h. die Zuführungsöffnungen (14) sind mit der oberen Innenfläche der Luftkanäle (3) bündig, und die Abmessungen entsprechen deren Breite und ca. 30 % der Höhe der Luftkanäle (3). Aus den Fig. 3 und 4 geht noch hervor, daß die in der vorderen Seitenwand der Luftkammer (9) vorhandenen drei Kanalöffnungen (10) im Querschnitt den drei Luftkanälen (3) entsprechen.1 and 3 that the cooling air introduced into the individually ventilated grate plate supports (8) enters the air chamber (9) which is connected to the three air ducts (3) by three duct openings (10). A front cooling channel (12) is arranged between the troughs (5) and the front plate end face (11) as seen in the grate thrust direction, which is transverse to the longitudinal axis of the plate and which is provided through the three supply openings (14) from the air channels through a front partition (13) (3) receives the amount of cooling air required to cool the front plate face (11). This quantity of cooling air diverted from the total cooling air flowing through the grate plate according to the invention leaves the front cooling channel (12) through small outlet openings (15) in the base plate (2). This amount of cooling air indicated by (15a) has a share of approx. 5 to 10% of the total air throughput through the grate plate according to the invention, and at the same time it serves as sealing air in the cover slot (16) between the individual grate plate rows of the moving grate cooler. As is apparent from Fig. 5, the three cooling air supply openings (14) in the air channels (3) and troughs (5) to the front cooling channel dividing wall (13) in the upper region of the air channels (3), d. H. the supply openings (14) are flush with the upper inner surface of the air channels (3), and the dimensions correspond to their width and approximately 30% of the height of the air channels (3). 3 and 4 that the three channel openings (10) in the front side wall of the air chamber (9) correspond in cross section to the three air channels (3).

Bei der erfindungsgemäßen Rostplatte können die Luftkanäle (3) nicht verstopfen, da Kühlgutübertritte aus den Mulden (5) in die Luftkanäle (3) nur in geringem Maße durch die Luftaustrittsschlitze (4) infolge der Schwerkraft des Kühlgutes möglich sind. Da die Mulden (5) im übrigen von glatten senkrechten Seitenwänden umgeben sind, kann es nicht zu einem Verklemmen des in den Mulden (5) liegenden Kühlgutes kommen. Die vordere Rostplattenstirnfläche (11) wird von der durch den vorderen Kühlkanal (12) hindurchströmenden Kühlluftteilmenge (15a) ausreichend gekühlt, und da die Kühlluftzuführungsöffnungen (14) im oberen Bereich der Luftkanäle (3) angeordnet sind, wird verhindert, daß in die Luftkanäle (3) gelangtes Kühlgut in den vorderen Kühlkanal (12) gespült wird. Schließlich ist mit der am Rostplattenkörper (1) fest angebrachten Bodenplatte (2) eine sichere Abdichtung der Unterseite der Rostplatte möglich.In the grate plate according to the invention, the air ducts (3) cannot become blocked, since refrigerated goods can only pass from the troughs (5) into the air ducts (3) to a small extent through the air outlet slots (4) due to the gravity of the refrigerated goods. Since the troughs (5) are otherwise surrounded by smooth vertical side walls, the items to be cooled in the troughs (5) cannot become jammed. The front grate plate face (11) is sufficiently cooled by the partial cooling air quantity (15a) flowing through the front cooling channel (12), and since the cooling air supply openings (14) are arranged in the upper region of the air channels (3), it is prevented that into the air channels ( 3) Chilled goods are flushed into the front cooling channel (12). Finally, with the bottom plate (2) firmly attached to the grate plate body (1), it is possible to securely seal the underside of the grate plate.

Die Erfindung ist nicht nur anwendbar bei Rostplatten für Schubrostkühler mit einzeln belüfteten hohlbalkenartig ausgebildeten Rostplattenträgern, sondern auch bei Rostplatten für Schubrostkühler, die ein kammerbelüftetes Rostsystem aufweisen. Im letzteren Falle muß dann die Bodenplatte (2) zwecks Hindurchtritt der Kühlluft Perforierungen aufweisen.The invention is not only applicable to grate plates for thrust grate coolers with individually ventilated hollow beam-shaped grate plate supports, but also for grate plates for thrust grate coolers that have a chamber-ventilated grate system. In the latter case, the base plate (2) must have perforations for the cooling air to pass through.

Claims (6)

1. A grate plate for grate plate coolers for the cooling of hot material, having upwardly-open troughs (5) arranged on the upper side of the grate plates, wherein a multiplicity of the grate plates through which cooling air flows is alternately arranged on fixed-position grate plate supports (8) and on grate plate supports (8) which move to and fro in the direction of transport of the grate, wherein a plurality of cooling air channels (3) separating the troughs (5) from each other are arranged in the grate plate body (1) parallel to the grate plate longitudinal axis (18) and extending to the upper side of the grate plates (17), and wherein the partition walls between the air channels (3) are provided with air exit slits (4) parallel to the longitudinal axis of the plates (18), characterised in that the air exit slits (4) are arranged immediately above the base plate (2) of the grate plate.
2. A grate plate according to claim 1, characterised in that the partition walls separating the air channels (3) from the troughs (5) are bent (6) in the region of the air exit slits (4) downwardly towards the centre of the troughs (5).
3. A grate plate according to either claim 1 or 2, characterised in that the air channels (3) arranged parallel to the plate longitudinal axis (18) are connected via supply apertures (14) through a partition wall (13) with an anterior cooling channel (12) arranged transversely to the longitudinal axis of the plate behind the anterior plate front face (11) viewed in the grate conveying direction, with the base plate (2) being provided with exit apertures (15) for the discharge of cooling air in the region of the cooling channel (12).
4. A grate plate according to claim 3, characterised in that the supply apertures (14) join flush with the upper inner surface of the air channels (3) and that the dimensions of the supply apertures (14) correspond in width to the air channels (3) and are approximately 30% of their height.
5. A grate plate according to either claim 1 or 2, characterised in that projecting strips in the form of cooling air guiding means (7) are arranged on the base plate (2) sealing the grate plate body (1) from beneath in the middle of the troughs (5) parallel to the air exit slits (4) or plate longitudinal axis (18).
6. A grate plate according to either claim 1 or 5, characterised in that the base plate (2), which seals from below the part of the grate plate body (1) projecting from the grate plate support (8), is fixed to the plate body (1), e.g., is screwed or welded to it.
EP93111336A 1993-07-15 1993-07-15 Grate plate for a grate plate cooler Expired - Lifetime EP0634619B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT93111336T ATE123137T1 (en) 1993-07-15 1993-07-15 GRATE PLATE FOR PANEL GRATE COOLER FOR COOLING HOT FOOD.
DE59300221T DE59300221D1 (en) 1993-07-15 1993-07-15 Grate plate for chill grate cooler for cooling hot goods.
ES93111336T ES2073323T5 (en) 1993-07-15 1993-07-15 GRILL PLATE FOR COOLERS WITH PUSH GRILL FOR COOLING HOT MATERIALS.
DK93111336T DK0634619T4 (en) 1993-07-15 1993-07-15 Grate plate for transport grate chillers for cooling hot goods
EP93111336A EP0634619B2 (en) 1993-07-15 1993-07-15 Grate plate for a grate plate cooler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93111336A EP0634619B2 (en) 1993-07-15 1993-07-15 Grate plate for a grate plate cooler

Publications (3)

Publication Number Publication Date
EP0634619A1 EP0634619A1 (en) 1995-01-18
EP0634619B1 true EP0634619B1 (en) 1995-05-24
EP0634619B2 EP0634619B2 (en) 1999-03-10

Family

ID=8213076

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93111336A Expired - Lifetime EP0634619B2 (en) 1993-07-15 1993-07-15 Grate plate for a grate plate cooler

Country Status (5)

Country Link
EP (1) EP0634619B2 (en)
AT (1) ATE123137T1 (en)
DE (1) DE59300221D1 (en)
DK (1) DK0634619T4 (en)
ES (1) ES2073323T5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10216926A1 (en) * 2002-04-17 2003-11-06 Kloeckner Humboldt Wedag Method and device for transporting hot cement clinker through a grate cooler

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19954683A1 (en) * 1999-11-13 2001-05-17 Kloeckner Humboldt Wedag Grate cooler has above cool grate, tubular shafts spaced apart and transverse to cold goods' transport direction with distributed projecting cams around periphery
DE10015054A1 (en) * 2000-03-25 2001-09-27 Kloeckner Humboldt Wedag Grate cooler
DE10355822B4 (en) 2003-11-28 2013-06-13 Khd Humboldt Wedag Gmbh Bulk cooler for cooling hot chilled goods
DE10359400A1 (en) * 2003-12-18 2005-07-14 Khd Humboldt Wedag Ag Bulk cooler for cooling hot chilled goods
LT5564B (en) 2007-07-19 2009-04-27 Khd Humboldt Wedag Gmbh Bulk material cooler for cooling hot materials to be cooled
WO2013091633A1 (en) * 2011-12-21 2013-06-27 Flsmidth A/S Apparatus and method for transporting particulate material

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3812425A1 (en) * 1988-04-14 1989-10-26 Peters Ag Claudius RADIATOR GRID PLATE
US5174747A (en) * 1991-09-03 1992-12-29 Fuller Company Grate plate
DE4134242A1 (en) * 1991-10-16 1993-04-22 Krupp Polysius Ag COOLING GRID

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10216926A1 (en) * 2002-04-17 2003-11-06 Kloeckner Humboldt Wedag Method and device for transporting hot cement clinker through a grate cooler

Also Published As

Publication number Publication date
ATE123137T1 (en) 1995-06-15
DK0634619T4 (en) 1999-10-04
ES2073323T3 (en) 1995-08-01
DE59300221D1 (en) 1995-06-29
EP0634619B2 (en) 1999-03-10
EP0634619A1 (en) 1995-01-18
DK0634619T3 (en) 1995-07-24
ES2073323T5 (en) 1999-07-01

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