EP0337383B1 - Coolerrosterplate - Google Patents
Coolerrosterplate Download PDFInfo
- Publication number
- EP0337383B1 EP0337383B1 EP89106396A EP89106396A EP0337383B1 EP 0337383 B1 EP0337383 B1 EP 0337383B1 EP 89106396 A EP89106396 A EP 89106396A EP 89106396 A EP89106396 A EP 89106396A EP 0337383 B1 EP0337383 B1 EP 0337383B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- openings
- grate
- plate
- grate plate
- trough
- 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.)
- Revoked
Links
- 239000000112 cooling gas Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 description 17
- 206010012735 Diarrhoea Diseases 0.000 description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 238000010304 firing Methods 0.000 description 3
- 239000000969 carrier Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
Images
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
- Gratings for kiln coolers are known (DE-C 11 34 329, DE-C 24 32 599, DE-C 33 32 592, EP-A 01 67 658), which are constructed from plate-shaped grate elements. Plates of essentially the same type are assembled into rows which run transversely to the longitudinal direction of the grate and each overlap the rear end of the row of grate plates lying in front of them. Individual rows of plates can be fixed, others can be designed to move back and forth to form a sliding grate in the longitudinal grating direction.
- the plate-shaped design means that the plates are suitable in principle for both one and the other application, since the flat front ends of their underside can easily be connected to the equally flat rear areas of the top of the following plates by the overlap.
- the panels are carried by grating beams running transversely. On their underside they generally have devices for attachment to a grate support in the rear area.
- the plates are provided with cooling gas passage openings which open into the top of the plate. Sometimes such openings also open in the vertical end face of the plates. However they are arranged in the free surface of the plate, forces from different directions always act on the refrigerated goods particles located in the opening mouths, by means of which these particles can be pressed into the openings.
- grate plate US-A 37 53 299, Fig. 3 and 4
- the troughs on the top of the grate plate are formed by an attachment part, the longitudinal ribs above the grate plate and at a distance from the front side the grate plate has a cross rail.
- Most air passage openings are located in the horizontal part of the grate plate and thus in the trough bottom, so that they are exposed to rust diarrhea or clogging.
- Horizontal air openings are provided in the front of the grate plate. These do not open into the trough, but rather into the gap between the grate plate face and the cross rail of the attachment part which is in turn connected to the trough.
- the known grate plate cannot teach that the way in which the air passage openings are arranged in the plate end face rust, and clogging of the openings can be prevented.
- the invention has for its object to improve a plate of the latter type in that rust diarrhea and clogging of the cooling gas through openings are prevented.
- the solution lies in the features of claim 1. Preferred embodiments are specified in the subclaims.
- the invention is based on the knowledge that the arrangement of the cooling air through openings in the trough removes the goods contained therein Horizontal forces are released and only the vertical force from the load of the refrigerated goods bed acts on the refrigerated goods particles located in the vicinity of the mouths of the openings and that this enables the cooling air through openings to be effectively shielded from rusting.
- the forces run parallel to the
- a firing grate for domestic use (FR-B 872319)
- FR-B 872319 it is known to alternately assemble the firing grate from grate bars with a V-shaped cross section with an upward or downward cavity so that combustion air channels remain between them, which flow in the direction of flow from top to bottom are directed below. This is intended to ensure that the combustion air is supplied to the fuel that is located at the very bottom of the grate cavity.
- rust diarrhea remedies in this prior art because the same grate contains vertical air passages that readily allow rust diarrhea.
- the known firing grate is also immovable, so that the problem of the changing forces which favor the grate diarrhea, which is characteristic of the invention, is absent.
- the passage openings expediently fall at least in the region near the mouth in the direction of flow in order to avoid clinker getting stuck in the openings and being able to penetrate into the air duct area.
- the overlap can be designed such that the plate part located above the opening mouths projects above the one located below.
- the opening openings are expediently arranged in the side walls of the troughs, which run approximately parallel to the direction of the relative movement, i.e. in the longitudinal direction of the plate, whereby they are conveniently slit-shaped.
- the cooling gas is then fed to these openings through hollow ribs running in the conveying direction. Even if these do not enjoy the protection of an overlying clinker layer, they are well cooled by the cooling air flowing past.
- the openings of the grate plate which are further away from the cooling gas supply on the underside that is to say those which lie further forward, have a larger passage cross section than those which are further back and closer to the cooling gas supply.
- the plates in the stationary area can be easily connected to the grate carrier top plate by screwing it conveniently attached for use in the grate area with a downward-open construction, as is known from DE-PS 24 32 599. All of the grate plates, which are arranged in the middle or end region of the cooling zone, partly movably, partly immovably above an air chamber, are then acted upon together with cooling air.
- the troughs containing the cooling gas openings are expediently arranged only in the non-overlapped plate part.
- top plates 2 are fixedly arranged on stationary supports 1, which are designed as air guide channels, on which Grate plates 3 are attached.
- the upper plates 2 have recesses 4 encircling the edges of the grate plates for better connection and are screwed to the grate plates.
- the grate plates 3 overlap in the area 5 and are provided with a seal 6 there. In the exposed area, they contain troughs 7, which are formed by transverse ribs 8 and longitudinal ribs 9. Cold refrigerated goods are held in them, which forms a protective cover against the hot refrigerated goods located above them.
- cooling gas through openings 11 which run a little downward in the flow direction in order to make it difficult for cooling air to pass into the interior of the plate to the gas supply area. They are slit-shaped in the longitudinal direction of the grate or in the direction of movement of the material.
- the part 12 of the ribs 9 located above the slots 11 protrudes further beyond the mouths of the slots 11 into the trough 7 than the part 13 located below, so that the mouth of the passage openings 11 is covered.
- Air guide channels 14 are provided under the ribs 9. Furthermore, the trough floors 16 form a certain distance from the top plate 2 of the grate carrier, so that an air-guiding intermediate space 15 is formed between them. To compensate for the flow resistances in the air guiding regions 14, 16, the slot 11 'in the foremost depression (far right in FIG. 1) is designed further than the slot 11' 'in the middle depression and this in turn is wider than the slot 11' '' in the rearmost depression, which is closest to the air-carrying grate support 1.
- FIG. 1 shows an immovable grate plate arrangement
- FIG. 2 illustrates a corresponding arrangement in a sliding grate.
- movable grate supports 1 ′ alternate with fixed, air-guiding grate supports 1, which are driven to and fro in the direction of the arrow in the longitudinal direction of the grate.
- the front edge of the associated grate plate 3 assumes the extreme positions indicated by dash-dotted lines at 3 ′ and 3 ′′. So that in no operating state a trough of the plate shown on the right in the drawing gets under the left plate and in the process, refrigerated goods are blown under the left plate can be, the troughs 7 are limited to that area that is always outside the overlap area. Otherwise, the grate plate arrangement of FIG. 2 is the same as that explained with reference to FIGS. 1 and 3.
- grate plates of the type shown in FIG. 1 or 2 can also be used in the grate area in which the cooling gas is not supplied individually for each grate plate row by air-guiding grate supports 1.
- the grate plates can then be fastened in a suitable manner without the grate support top plates 2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Details (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Devices For Warming Or Keeping Food Or Tableware Hot (AREA)
Description
Es sind Roste für Brenngutkühler bekannt (DE-C 11 34 329, DE-C 24 32 599, DE-C 33 32 592, EP-A 01 67 658), die aus plattenförmigen Rostelementen aufgebaut sind. Im wesentlichen gleichartige Platten sind zu quer zur Längsrichtung des Rosts verlaufenden Reihen zusammengesetzt, die jeweils das hintere Ende der vor ihr liegenden Reihe von Rostplatten überlappen. Einzelne Plattenreihen können feststehend, andere zur Bildung eines Schubrosts in Rostlängsrichtung hin- und herbeweglich ausgebildet sein. Die plattenförmige Ausbildung bringt es mit sich, daß die Platten sowohl für die eine als auch die andere Anwendung im Prinzip geeignet sind, da die flachen Vorderenden ihrer Unterseite sich durch die Überlappung leicht an die ebenso flachen hinteren Bereiche der Oberseite der folgenden Platten anschließen lassen. Getragen werden die Platten von quer verlaufenden Rostträgern. Auf ihrer Unterseite weisen sie im allgemeinen in ihrem hinteren Bereich Einrichtungen zur Anbringung auf einem Rostträger auf. Zur Kühlung der Platte selbst als auch zur Zufuhr von Kühlgas zu dem auf dem Rost liegenden Gutbett sind die Platten mit Kühlgasdurchtrittsöffnungen versehen, die in der Plattenoberseite münden. Mitunter münden solche Öffnungen auch in der vertikalen Stirnseite der Platten. Wie auch immer sie in der freien Plattenoberfläche angeordnet sein mögen, stets wirken auf die in den Öffnungsmündungen befindlichen Kühlgutteilchen Kräfte aus verschiedenen Richtungen, durch die diese Teilchen in die Öffnungen hineingedrückt werden können.Gratings for kiln coolers are known (DE-C 11 34 329, DE-C 24 32 599, DE-C 33 32 592, EP-A 01 67 658), which are constructed from plate-shaped grate elements. Plates of essentially the same type are assembled into rows which run transversely to the longitudinal direction of the grate and each overlap the rear end of the row of grate plates lying in front of them. Individual rows of plates can be fixed, others can be designed to move back and forth to form a sliding grate in the longitudinal grating direction. The plate-shaped design means that the plates are suitable in principle for both one and the other application, since the flat front ends of their underside can easily be connected to the equally flat rear areas of the top of the following plates by the overlap. The panels are carried by grating beams running transversely. On their underside they generally have devices for attachment to a grate support in the rear area. To cool the plate itself and to supply cooling gas to the bed of material lying on the grate, the plates are provided with cooling gas passage openings which open into the top of the plate. Sometimes such openings also open in the vertical end face of the plates. However they are arranged in the free surface of the plate, forces from different directions always act on the refrigerated goods particles located in the opening mouths, by means of which these particles can be pressed into the openings.
In vertikaler Richtung rühren diese Kräfte von der Last des Gutbetts her. In horizontaler Richtung stammen sie von der Relativbewegung des Guts gegenüber den Platten.In the vertical direction, these forces come from the load of the material bed. In the horizontal direction they originate from the relative movement of the goods in relation to the plates.
Um die Wärmebelastung der Rostplatten zu verringern und ihre Standzeit zu vergrößern ist es bekannt (DE-B 20 11 518), in der Oberseite der Rostplatten Mulden vorzusehen, indem sie einen nach oben offenen Kasten bilden, der in Fächer unterteilt ist. Die Kühlluftdurchtrittsöffnungen münden im Boden dieser Fächer. Die Mulden füllen sich mit kaltem Kühlgut, so daß in diesem Bereich Gut über Gut gleitet, wodurch die Größe der Berührungsfläche zwischen dem heißen Gut und der Rostfläche verringert wird. Auch ergibt sich dadurch, daß die Kühlluftöffnungen in dem von Kühlgut eingenommenen Bereich der Mulde münden, eine gute Kühlluftverteilung. Jedoch hat die Anordnung der Kühlluftdurchtrittsöffnungen im Muldenboden den Nachteil, daß Feingut hindurchfallen oder sich in den Öffnungen festsetzen kann.In order to reduce the heat load on the grate plates and to increase their service life, it is known (DE-B 20 11 518) to provide troughs in the top of the grate plates by forming an upwardly open box which is divided into compartments. The cooling air through openings open in the bottom of these compartments. The troughs are filled with cold refrigerated goods, so that good slides over good in this area, which reduces the size of the contact surface between the hot good and the grate surface. A good cooling air distribution also results from the fact that the cooling air openings open into the region of the trough occupied by the refrigerated goods. However, the arrangement of the cooling air through openings in the trough bottom has the disadvantage that fine material can fall through or become stuck in the openings.
Dies gilt auch für eine weitere bekannte Rostplatte (US-A 37 53 299, Fig. 3 u. 4), bei welcher die Mulden auf der Oberseite der Rostplatte durch einen Aufsatzteil gebildet sind, der Längsrippen oberhalb der Rostplatte sowie in Abstand vor der Stirnseite der Rostplatte eine Querschiene aufweist. Die meisten Luftdurchtrittsöffnungen befinden sich im horizontalen Teil der Rostplatte und somit im Muldenboden, so daß sie dem Rostdurchfall oder der Verstopfung ausgesetzt sind. In der Stirnseite der Rostplatte sind horizontale Luftdurchtrittsöffnungen vorgesehen. Diese münden nicht in der Mulde, sondern in dem seinerseits mit der Mulde in Verbindung stehenden Spalt zwischen der Rostplattenstirn und der Querschiene des Aufsatzteils. Da die meisten Luftdurchtrittsöffnungen im Muldenboden angeordnet sind und die Anordnung der Luftdurchtrittsöffnungen in der Plattenstirnseite leicht mit dem Kühlbedarf der Plattenstirnseite und der Querschiene erklärbar ist, kann die bekannte Rostplatte nicht die Lehre erteilen, daß die Art und Weise, wie die Luftdurchtrittsöffnungen in der Plattenstirnseite angeordnet sind, der Rostdurchfall und die Verstopfung der Öffnungen verhindert werden kann.This also applies to another known grate plate (US-A 37 53 299, Fig. 3 and 4), in which the troughs on the top of the grate plate are formed by an attachment part, the longitudinal ribs above the grate plate and at a distance from the front side the grate plate has a cross rail. Most air passage openings are located in the horizontal part of the grate plate and thus in the trough bottom, so that they are exposed to rust diarrhea or clogging. Horizontal air openings are provided in the front of the grate plate. These do not open into the trough, but rather into the gap between the grate plate face and the cross rail of the attachment part which is in turn connected to the trough. Since most of the air passage openings are arranged in the trough bottom and the arrangement of the air passage openings in the plate end face can easily be explained by the cooling requirements of the plate end face and the transverse rail, the known grate plate cannot teach that the way in which the air passage openings are arranged in the plate end face rust, and clogging of the openings can be prevented.
Der Erfindung liegt die Aufgabe zugrunde, eine Platte der letztgenannten Art dahingehend zu verbessern, daß Rostdurchfall und Verstopfung der Kühlgasdurchtrittsöffnungen verhindert werden. Die Lösung liegt in den Merkmalen des Anspruches 1. Bevorzugte Ausführungen sind in den Unteransprüchen angegeben.The invention has for its object to improve a plate of the latter type in that rust diarrhea and clogging of the cooling gas through openings are prevented. The solution lies in the features of
Während bei der Anordnung von Kühlluftdurchtrittsöffnungen in herkömmlicher Weise in der freien Oberfläche der Rostplatten eine Abschirmung praktisch nicht möglich ist, weil Kräfte aus unterschiedlichen Richtungen einwirken, beruht die Erfindung auf der Erkenntnis, daß die Anordnung der Kühlluftdurchtrittsöffnungen in der Mulde das darin befindliche Gut von den Horizontalkräften befreit und nur noch die vertikale Kraft von der Last des Kühlgutbetts auf die in der Nähe der Öffnungsmündungen befindlichen Kühlgutteilchen wirkt und daß dies eine wirksame Abschirmung der Kühlluftdurchtrittsöffnungen gegen Rostdurchfall ermöglicht. Die Kräfte verlaufen parallel zu denWhile with the arrangement of cooling air through openings in a conventional manner in the free surface of the grate plates, shielding is practically not possible because forces act from different directions, the invention is based on the knowledge that the arrangement of the cooling air through openings in the trough removes the goods contained therein Horizontal forces are released and only the vertical force from the load of the refrigerated goods bed acts on the refrigerated goods particles located in the vicinity of the mouths of the openings and that this enables the cooling air through openings to be effectively shielded from rusting. The forces run parallel to the
Wänden in denen die Öffnungen münden. Daher werden die Teilchen nicht in die Mündungen hineingedrückt. Dasselbe gilt für den Fall, daß die Öffnungsmündungen in bezug auf die betriebliche Vertikalrichtung überdeckt ausgeführt sind, weil der überdeckende Teil bewirkt, daß ein durch die Vertikalkräfte im Bereich der Öffnungsmündung bewegtes Kühlgutteilchen nicht in die Öffnungsmündung hineingedrückt wird.Walls in which the openings open. Therefore, the particles are not pushed into the mouths. The same applies in the event that the opening openings are covered in relation to the operational vertical direction, because the covering part has the effect that a refrigerated goods particle moved by the vertical forces in the region of the opening opening is not pressed into the opening opening.
Bei einem Brennrost für häusliche Anwendungszwecke (FR-B 872319) ist es bekannt, den Brennrost aus im Querschnitt V-förmigen Roststäben wechselnd mit nach oben bzw. nach unten gerichteter Höhlung so zusammenzusetzen, daß zwischen ihnen Verbrennungsluftkanäle verbleiben, die in Strömungsrichtung von oben nach unten gerichtet sind. Dadurch soll erreicht werden, daß die Verbrennungsluft gezielt demjenigen Brennstoff zugeführt wird, der sich ganz unten in der Rosthöhlung befindet. Der Durchschnittsfachmann war nicht veranlaßt, bei diesem Stand der Technik nach Mitteln gegen Rostdurchfall zu suchen, da derselbe Rost vertikale Luft-Durchgangsöffnungen enthält, die Rostdurchfall ohne weiteres gestatten. Auch ist der bekannte Brennrost unbeweglich, so daß die für die Erfindung charakteristische Problematik der wechselnden, den Rostdurchfall begünstigenden Kräfte fehlt.In the case of a firing grate for domestic use (FR-B 872319), it is known to alternately assemble the firing grate from grate bars with a V-shaped cross section with an upward or downward cavity so that combustion air channels remain between them, which flow in the direction of flow from top to bottom are directed below. This is intended to ensure that the combustion air is supplied to the fuel that is located at the very bottom of the grate cavity. One of ordinary skill in the art was not prompted to look for rust diarrhea remedies in this prior art because the same grate contains vertical air passages that readily allow rust diarrhea. The known firing grate is also immovable, so that the problem of the changing forces which favor the grate diarrhea, which is characteristic of the invention, is absent.
Letzteres gilt auch für einen industriellen Brennofen (FR-B 10 71 466), bei dem die Bodenplatte des für die Verbrennung von Kohlenstaub bestimmten Brennraums eine Mehrzahl von beispielsweise kuppelartigen Erhöhungen trägt, in denen Luftdüsen in vertikaler oder schwach geneigter Wandfläche münden. Die Verhinderung von Rostdurchfall durch diese Anordnung ist nicht offenbart. Unter den Bedingungen des erfindungsgemäß vorausgesetzten Kühlrosts wäre sie dazu auch nicht geeignet, weil keine Mulden gebildet sind, die das Kühlgut festhalten und daher die Luftöffnungen einer Abschirmung zugänglich machen. Vielmehr sind zwischen den Erhöhungen gassenartig durchgehende Vertiefungen vorhanden, in denen sich das Gut relativ und parallel zur Platte bewegen kann, so daß horizontale Kräfte entstehen, die die Gutteilchen den Luftöffnungen zuführen können.The latter also applies to an industrial kiln (FR-
Zweckmäßigerweise verlaufen die Durchtrittsöffnungen wenigstens im mündungsnahen Bereich in Strömungsrichtung fallend, um zu vermeiden, daß Klinker sich in den Öffnungen festsetzt und in den Luftführungsbereich eindringen kann. Die Überdeckung kann so ausgeführt sein, daß der oberhalb der Öffnungsmündungen befindliche Plattenteil den darunter befindlichen überragt. Dies bringt bei abgeschaltetem Kühlgas oder Reparaturarbeiten eine zusätzliche Sicherheit gegen Klinkerdurchfall, weil der aus dem Klinkerbett einwirkende Druck sich nicht unmittelbar auf die Öffnung fortsetzen kann.The passage openings expediently fall at least in the region near the mouth in the direction of flow in order to avoid clinker getting stuck in the openings and being able to penetrate into the air duct area. The overlap can be designed such that the plate part located above the opening mouths projects above the one located below. When the cooling gas is switched off or repair work is carried out, this provides additional security against clinker diarrhea, because the pressure acting on the clinker bed cannot continue directly onto the opening.
Um ferner zu vermeiden, daß die durch die Schub-Relativbewegung zum Klinker hervorgerufenen Kräfte Klinkerteile in die Öffnungen hineindrücken, werden die Öffnungsmündungen zweckmäßigerweise in den Seitenwänden der Mulden angeordnet, die etwa parallel zur Richtung der Relativbewegung, also in der Längsrichtung der Platte verlaufen, wobei sie zweckmäßigerweise schlitzförmig sind. Das Kühlgas wird diesen Öffnungen dann durch in Förderrichtung verlaufende, hohle Rippen zugeführt. Auch wenn diese nicht den Schutz einer darüber liegenden Klinkerschicht genießen, sind sie durch die innen vorbeistreichende Kühlluft gut gekühlt.To further avoid that the forces caused by the thrust relative movement to the clinker force clinker parts into the openings, the opening openings are expediently arranged in the side walls of the troughs, which run approximately parallel to the direction of the relative movement, i.e. in the longitudinal direction of the plate, whereby they are conveniently slit-shaped. The cooling gas is then fed to these openings through hollow ribs running in the conveying direction. Even if these do not enjoy the protection of an overlying clinker layer, they are well cooled by the cooling air flowing past.
In denjenigen Bereichen des Rosts, in denen die Platten jeweils mit einem luftführenden Rostträger verbunden sind, liegen sie auf einer Oberplatte des Rostträgers auf, die ihre Luftzuführungsseite vollständig abdeckt. Dank der dichten Verbindung zwischen den Rostplatten und dieser Oberplatte des Rostträgers können einzelne Abschnitte des Kühlrosts gesondert von anderen belüftet werden. Außerdem kann dadurch sichergestellt werden, daß alle Platten gleichmäßig mit Kühlluft versorgt werden und somit Klinkerbettzonen vermieden werden, in denen die Kühlluft das Klinkerbett wegen geringeren Widerstandes bevorzugt durchströmt, während andere Bereiche und die dort befindlichen Platten zu wenig gekühlt werden. Die unterseitige Abdeckung der Rostplatte durch die Oberplatte des Rostträgers engt die zu den weiter vorne in der Platte angeordneten Öffnungen führenden Strömungsquerschnitte ein. Damit dennoch alle Öffnungen gleichmäßig durchströmt werden, kann nach der Erfindung vorgesehen sein, daß die von der unterseitigen Kühlgaszuführung weiter entfernten Öffnungen der Rostplatte, also die weiter vorne liegenden, einen größeren Durchtrittsquerschnitt aufweisen, als die weiter hinten und näher der Kühlgaszuführung liegenden.In those areas of the grate in which the plates are each connected to an air-guiding grate support, they rest on an upper plate of the grate support which completely covers their air supply side. Thanks to the tight connection between the grate plates and this top plate of the grate carrier, individual sections of the cooling grate can be ventilated separately from others. In addition, it can be ensured that all plates are evenly supplied with cooling air and thus clinker bed zones are avoided, in which the cooling air flows preferentially through the clinker bed because of lower resistance, while other areas and the plates located there are cooled too little. The underside covering of the grate plate by the top plate of the grate carrier constricts the flow cross sections leading to the openings arranged further forward in the plate. So that all openings are evenly flowed through, it can be provided according to the invention that the openings of the grate plate which are further away from the cooling gas supply on the underside, that is to say those which lie further forward, have a larger passage cross section than those which are further back and closer to the cooling gas supply.
Während die Platten im stationären Bereich einfach durch Verschraubung mit der Rostträger-Oberplatte verbunden werden können, werden sie zur Verwendung im Rostbereich mit nach unten offener Bauweise zweckmäßigerweise so befestigt, wie dies aus der DE-PS 24 32 599 bekannt ist. Es werden dann alle Rostplatten, die im mittleren oder Endbereich der Kühlzone teils beweglich, teils unbeweglich über einer Luftkammer angeordnet sind, gemeinsam mit Kühlluft beaufschlagt.While the plates in the stationary area can be easily connected to the grate carrier top plate by screwing it conveniently attached for use in the grate area with a downward-open construction, as is known from DE-PS 24 32 599. All of the grate plates, which are arranged in the middle or end region of the cooling zone, partly movably, partly immovably above an air chamber, are then acted upon together with cooling air.
Im Schubrostbereich, in welchem die Rostplatten einander teilweise und relativ zueinander beweglich überlappen, muß Sicherheit dafür gegeben sein, daß während der Schubbewegung kein Klinker unter die jeweils überlappende Platte geblasen werden kann. Deshalb werden die die Kühlgasöffnungen enthaltenden Mulden zweckmäßigerweise nur im nicht überlappten Plattenteil angeordnet.In the sliding grate area, in which the grate plates partially overlap and move relative to one another, there must be certainty that no clinker can be blown under the respective overlapping plate during the pushing movement. Therefore, the troughs containing the cooling gas openings are expediently arranged only in the non-overlapped plate part.
Durch die erfindungsgemäße Anordnung wird nicht nur die Platte geschont, sondern tritt die Kühlluft aus der Mulde auch infolge der Siebwirkung des Klinkers besonders gleichmäßig verteilt in den oberen, heißen Bereich des Klinkerbetts ein.As a result of the arrangement according to the invention, not only is the plate protected, but also the cooling air enters the upper, hot area of the clinker bed particularly evenly as a result of the sieving action of the clinker.
Die Erfindung wird im folgenden näher unter Bezugnahme auf die Zeichnungen erläutert, die vorteilhafte Ausführungsbeispiele veranschaulicht. Es zeigen:
- Fig. 1
- einen Längsschnitt durch eine Rostanordnung im Bereich zweier Rostplatten auf stationären Rostträgern,
- Fig. 2
- eine der Fig. 1 entsprechende Darstellung mit einem beweglichen Rostträger,
- Fig. 3
- einen Querschnitt durch die Anordnung gemäß Fig. 1 gemäß Linie III-III und
- Fig. 4
- die Seitenansicht einer Variante derselben Rostplatte.
- Fig. 1
- 2 shows a longitudinal section through a grate arrangement in the area of two grate plates on stationary grate carriers,
- Fig. 2
- 1 corresponding representation with a movable grate carrier,
- Fig. 3
- a cross section through the arrangement of FIG. 1 along line III-III and
- Fig. 4
- the side view of a variant of the same grate plate.
Gemäß Fig. 1 sind auf stationären Trägern 1, die als Luftführungskanäle ausgebildet sind, Oberplatten 2 fest angeordnet, auf denen Rostplatten 3 befestigt sind. Die Oberplatten 2 weisen zwecks besseren Anschlusses an die Ränder der Rostplatten umlaufende Vertiefungen 4 auf und sind mit den Rostplatten verschraubt.1,
Die Rostplatten 3 überlappen sich im Bereich 5 und sind dort mit einer Dichtung 6 versehen. Im freiliegenden Bereich enthalten sie Mulden 7, die durch Querrippen 8 und Längsrippen 9 gebildet sind. In ihnen wird kaltes Kühlgut festgehalten, das eine Schutzabdeckung gegenüber dem darüber befindlichen, heißen Kühlgut bildet.The
In den Seitenwänden 10 der Mulden 7 befinden sich Kühlgasdurchtrittsöffnungen 11, die in Strömungsrichtung ein wenig fallend verlaufen, um den Durchtritt von Kühlluft ins Innere der Platte zum Gaszuführungsbereich zu erschweren. Sie sind in Längsrichtung des Rosts oder in Bewegungsrichtung des Guts schlitzförmig ausgeführt. Der oberhalb der Schlitze 11 befindliche Teil 12 der Rippen 9 ragt über die Mündungen der Schlitze 11 weiter in die Mulde 7 vor als der darunter befindliche Teil 13, so daß die Mündung der Durchtrittsöffnungen 11 überdeckt ist.In the
Unter den Rippen 9 sind Luftführungskanäle 14 vorgesehen. Ferner bilden die Muldenböden 16 einen gewissen Abstand zur Oberplatte 2 der Rostträger, so daß dazwischen ein luftführender Zwischenraum 15 gebildet ist. Zum Ausgleich der Strömungswiderstände in den Luftführungsbereichen 14, 16 ist der Schlitz 11' in der vordersten Mulde (ganz rechts in Fig. 1) weiter ausgebildet als der Schlitz 11'' in der mittleren Mulde und dieser wiederum weiter als der Schlitz 11''' in der hintersten Mulde, die dem luftführenden Rostträger 1 am nächsten ist.
Während Fig. 1 eine unbewegliche Rostplattenanordnung zeigt, veranschaulicht Fig. 2 eine entsprechende Anordnung in einem Schubrost. In bekannter Weise wechseln mit feststehenden, luftführenden Rostträgern 1 bewegliche Rostträger 1', die im Sinne des Pfeils in Längsrichtung des Rosts hin- und hergehend angetrieben sind. Dabei nimmt die Vorderkante der zugehörigen Rostplatte 3 die strichpunktiert bei 3' und 3'' angedeuteten Extremstellungen ein. Damit in keinem Betriebszustand eine Mulde der rechts in der Zeichnung dargestellten Platte unter die linke Platte gelangt und dabei Kühlgut unter die linke Platte geblasen werden kann, sind die Mulden 7 auf denjenigen Bereich beschränkt, der sich stets außerhalb des Überlappungsbereichs befindet. Im übrigen gleicht die Rostplattenanordnung der Fig. 2 der unter Bezugnahme auf Fig. 1 und 3 erläuterten.1 shows an immovable grate plate arrangement, FIG. 2 illustrates a corresponding arrangement in a sliding grate. In a known manner, movable grate supports 1 ′ alternate with fixed, air-guiding grate supports 1, which are driven to and fro in the direction of the arrow in the longitudinal direction of the grate. The front edge of the associated
Ohne Iuftführende Rostträger 1 und ohne deren Oberplatte 2 können Rostplatten der in Fig. 1 oder 2 gezeigten Art auch in demjenigen Rostbereich verwendet werden, in welchem die Kühlgaszuführung nicht individuell für jede Rostplattenreihe durch luftführende Rostträger 1 erfolgt. Die Rostplatten können dann ohne die Rostträger-Oberplatten 2 in geeigneter Weise befestigt werden. Dazu bedient man sich vorteilhafterweise der in Fig. 4 veranschaulichten, an sich bekannten Befestigungselemente, zu deren näheren Erläuterung auf den Stand der Technik (DE-PS 24 32 599) verwiesen werden kann.Without air-carrying grate supports 1 and without their
Claims (9)
- A grate plate for use in the grate of a cooler for combustion material, the upper side of which is intended to accommodate a bed for material to be cooled whilst moving away over the plate and has cooling gas openings (11) inside at least one trough (7) designed to accommodate and retain material to be cooled, which openings discharge within the region of the trough occupied by the material to be cooled, characterised in that these openings (11) discharge at lateral surfaces (10) of the trough (7) which are substantially vertical in the operative position and/or the mouths of these openings are formed overhung in relation to the operational vertical direction.
- A grate plate according to Claim 1, characterised in that the plate part (9) situated above the mouths of the openings projects over that part situated thereunder.
- A grate plate according to Claim 1 or 2, characterised in that a plurality of troughs (7) are provided.
- A grate plate according to any one of Claims 1 to 3, characterised in that the cooling gas openings (11) extend downwards in the flow direction at least in the zone near to their mouth.
- A grate plate according to any one of Claims 1 to 4, characterised in that the mouths of the openings are provided in lateral surfaces (10) of the trough (7) extending in the longitudinal direction of the plate.
- A grate plate according to any one of Claims 1 to 5, characterised in that the mouths of the openings are at least partly slot-like and extend substantially in the longitudinal direction of the plate.
- A grate plate according to any one of Claims 1 to 6, characterised in that hollow ribs (9) extending in the longitudinal direction of the plate are provided for directing cooling gas to the openings (11).
- A grate plate according to any one of Claims 1 to 7, characterised in that openings (11') which are situated further forward have a larger passage cross-section than openings (11'', 11''') situated further to the rear.
- A grate plate according to any one of Claims 1 to 8, characterised in that the trough(s) is/are provided in front of the part (5) of the upper side of the plate designed for connection with an overlapping grate plate.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3812425 | 1988-04-14 | ||
DE3812425A DE3812425A1 (en) | 1988-04-14 | 1988-04-14 | RADIATOR GRID PLATE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0337383A1 EP0337383A1 (en) | 1989-10-18 |
EP0337383B1 true EP0337383B1 (en) | 1993-10-27 |
Family
ID=6351970
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89106396A Revoked EP0337383B1 (en) | 1988-04-14 | 1989-04-11 | Coolerrosterplate |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0337383B1 (en) |
DE (4) | DE3812425A1 (en) |
ES (1) | ES2010975T3 (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3933860A1 (en) * | 1989-10-11 | 1991-04-18 | Henkel Kgaa | METHOD FOR PRODUCING ALKYL-POLYETHOXYETHERSULFAT |
DE4103866A1 (en) * | 1991-02-07 | 1992-08-13 | Zementanlagen Und Maschinenbau | Hot cement clinker grid plate - has lateral corrugations at the upper side with angled gas outlet openings |
DE4134242A1 (en) * | 1991-10-16 | 1993-04-22 | Krupp Polysius Ag | COOLING GRID |
US5282741A (en) * | 1992-01-31 | 1994-02-01 | Fuller Company | Grate plate |
DE4205534A1 (en) * | 1992-02-24 | 1993-08-26 | Kloeckner Humboldt Deutz Ag | Grid plate for push grid cooler for hot material - is suitable for hot cement clinker and has troughs on its upper side for accommodation of clinker so as to protect the grid plate against overheating. |
DK169218B1 (en) * | 1992-10-06 | 1994-09-12 | Smidth & Co As F L | Grating element for a grating base, for example in a tile cooler |
DK169217B1 (en) * | 1992-10-06 | 1994-09-12 | Smidth & Co As F L | Grating element for a grating base, e.g. in a tile cooler |
DK154692D0 (en) * | 1992-12-23 | 1992-12-23 | Smidth & Co As F L | PROCEDURE AND COOLER FOR COOLING PARTICULATED MATERIAL |
DK0634619T4 (en) * | 1993-07-15 | 1999-10-04 | Deutz Ag | Grate plate for transport grate chillers for cooling hot goods |
US5433157A (en) * | 1993-09-09 | 1995-07-18 | Kloeckner-Humboldt-Deutz Ag | Grate plate for thrust grating coolers for cooling hot material |
DE4412885A1 (en) * | 1994-04-14 | 1995-10-19 | Krupp Polysius Ag | Cooling grate |
DE4417422A1 (en) * | 1994-05-18 | 1995-11-23 | Krupp Polysius Ag | Grid to catch and cool hot material from furnace |
DE9417515U1 (en) * | 1994-10-31 | 1996-02-29 | Babcock Materials Handling Division GmbH, 21614 Buxtehude | Sliding grate for clinker coolers |
DE9417829U1 (en) | 1994-11-07 | 1996-03-14 | Babcock Materials Handling Division GmbH, 21614 Buxtehude | Grate plate for the sliding grate of a radiator |
DE19504311A1 (en) * | 1995-02-09 | 1996-08-14 | Krupp Polysius Ag | Two-layer cooler |
US5575642A (en) * | 1995-12-01 | 1996-11-19 | The Carondelet Corporation | Grate plate |
DE102015015632B4 (en) * | 2015-12-03 | 2017-12-07 | Khd Humboldt Wedag Gmbh | Grate plate for a grate cooler |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2011518B2 (en) * | 1970-03-11 | 1972-06-08 | Wedag Westfalia Dinnendahl Gröppel AG, 4630 Bochum | RUST PLATE FOR RUST COOLER |
US3753299A (en) * | 1970-03-28 | 1973-08-21 | Peters Ag Claudius | Grate plate for grates for cooling or combustion |
EP0219745A1 (en) * | 1985-10-25 | 1987-04-29 | Krupp Polysius Ag | Heated goods cooling device |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE344406C (en) * | 1920-11-23 | 1921-11-22 | Huettentechnisches Buero | Grate for fine-grained and low-quality fuels |
FR872319A (en) * | 1940-09-26 | 1942-06-04 | Grate device for burning all fuels and their gases | |
FR1071466A (en) * | 1952-02-25 | 1954-09-01 | Pulvis S L | Grate for burning powdered charcoal |
DE3332592C1 (en) * | 1983-09-08 | 1985-05-15 | Karl von Dipl.-Ing. Dipl.-Wirtsch.-Ing. 3057 Neustadt Wedel | Grate floor composed of rust elements for bulk goods, such as cement clinker |
-
1988
- 1988-04-14 DE DE3812425A patent/DE3812425A1/en not_active Withdrawn
-
1989
- 1989-04-11 DE DE89106396T patent/DE58905994D1/en not_active Revoked
- 1989-04-11 EP EP89106396A patent/EP0337383B1/en not_active Revoked
- 1989-04-11 DE DE8915978U patent/DE8915978U1/en not_active Expired - Lifetime
- 1989-04-11 DE DE8915979U patent/DE8915979U1/en not_active Expired - Lifetime
- 1989-04-11 ES ES89106396T patent/ES2010975T3/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2011518B2 (en) * | 1970-03-11 | 1972-06-08 | Wedag Westfalia Dinnendahl Gröppel AG, 4630 Bochum | RUST PLATE FOR RUST COOLER |
US3753299A (en) * | 1970-03-28 | 1973-08-21 | Peters Ag Claudius | Grate plate for grates for cooling or combustion |
EP0219745A1 (en) * | 1985-10-25 | 1987-04-29 | Krupp Polysius Ag | Heated goods cooling device |
Also Published As
Publication number | Publication date |
---|---|
ES2010975A4 (en) | 1989-12-16 |
EP0337383A1 (en) | 1989-10-18 |
DE3812425A1 (en) | 1989-10-26 |
ES2010975T3 (en) | 1994-02-16 |
DE58905994D1 (en) | 1993-12-02 |
DE8915979U1 (en) | 1992-09-10 |
DE8915978U1 (en) | 1992-09-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0337383B1 (en) | Coolerrosterplate | |
DE69801285T3 (en) | COOLER FOR GRAINY GOOD | |
DE4122751C2 (en) | ||
DE69305095T2 (en) | COOLER FOR COOLING BULK MATERIAL | |
EP0537523B1 (en) | Cooling grate | |
EP3252413B1 (en) | Method and device for cooling a bulk good layer on a supply grid | |
DD232539B5 (en) | Rostbodenelement to build a Rostflaeche | |
DE212004000003U1 (en) | Device for cooling a bulk material layer | |
EP2044378B1 (en) | Device for the cooling of bulk products | |
DE102009009285B4 (en) | A grate plate arrangement | |
DE19633969A1 (en) | Grid for material processing e.g. for cement production | |
DE202004020573U1 (en) | Process for treating, especially cooling, a bulk material layer uses a gas stream on a grid consisting of panels driven forward and backward in the conveying direction | |
EP0634619B1 (en) | Grate plate for a grate plate cooler | |
EP0789830B1 (en) | Sliding grating for a burned-material cooling unit, and grating plate for such a grating | |
EP1377785B1 (en) | Cooling grid for bulk material | |
DE9417829U1 (en) | Grate plate for the sliding grate of a radiator | |
DE69901801T2 (en) | COOLER STAINLESS PLATE | |
EP0825383A2 (en) | Grate plate | |
DE4205534A1 (en) | Grid plate for push grid cooler for hot material - is suitable for hot cement clinker and has troughs on its upper side for accommodation of clinker so as to protect the grid plate against overheating. | |
DE2000631B2 (en) | Heat exchanger with continuous bulk material conveyance | |
DE19604808A1 (en) | Pneumatic conveyor for hot granulate or powder products, e.g. cement clinker | |
DE102004056276B4 (en) | cooler | |
DE971157C (en) | Cooler for hot agglomerate | |
EP2182280A1 (en) | System for removing and cooling ashes from furnaces | |
DE4419729A1 (en) | Two-layer cooler |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19890807 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE DE ES FR GB IT |
|
ITCL | It: translation for ep claims filed |
Representative=s name: UFFICIO TECNICO ING. A. MANNUCCI |
|
GBC | Gb: translation of claims filed (gb section 78(7)/1977) | ||
EL | Fr: translation of claims filed | ||
17Q | First examination report despatched |
Effective date: 19900510 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE DE ES FR GB IT |
|
REF | Corresponds to: |
Ref document number: 58905994 Country of ref document: DE Date of ref document: 19931202 |
|
ITF | It: translation for a ep patent filed | ||
ET | Fr: translation filed | ||
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2010975 Country of ref document: ES Kind code of ref document: T3 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19940202 |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
26 | Opposition filed |
Opponent name: KRUPP POLYSIUS AG Effective date: 19940503 |
|
26 | Opposition filed |
Opponent name: KLOECKNER - HUMBOLDT-DEUTZ AG Effective date: 19940608 Opponent name: KRUPP POLYSIUS AG Effective date: 19940503 |
|
APAC | Appeal dossier modified |
Free format text: ORIGINAL CODE: EPIDOS NOAPO |
|
APAA | Appeal reference recorded |
Free format text: ORIGINAL CODE: EPIDOS REFN |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19970620 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19980316 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19980417 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 19980421 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19980422 Year of fee payment: 10 |
|
PLAB | Opposition data, opponent's data or that of the opponent's representative modified |
Free format text: ORIGINAL CODE: 0009299OPPO |
|
R26 | Opposition filed (corrected) |
Opponent name: KRUPP POLYSIUS AG * 940608 DEUTZ AG Effective date: 19940503 |
|
APAC | Appeal dossier modified |
Free format text: ORIGINAL CODE: EPIDOS NOAPO |
|
RDAG | Patent revoked |
Free format text: ORIGINAL CODE: 0009271 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT REVOKED |
|
27W | Patent revoked |
Effective date: 19980608 |
|
GBPR | Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state |
Free format text: 980608 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: CL |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: CD |
|
APAH | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOSCREFNO |