EP1139050A1 - Grate cooler - Google Patents

Grate cooler Download PDF

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Publication number
EP1139050A1
EP1139050A1 EP01106233A EP01106233A EP1139050A1 EP 1139050 A1 EP1139050 A1 EP 1139050A1 EP 01106233 A EP01106233 A EP 01106233A EP 01106233 A EP01106233 A EP 01106233A EP 1139050 A1 EP1139050 A1 EP 1139050A1
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EP
European Patent Office
Prior art keywords
grate
cooling
arms
grate cooler
cooler according
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Withdrawn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
EP01106233A
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German (de)
French (fr)
Inventor
Hubert Ramesohl
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.)
KHD Humboldt Wedag AG
Original Assignee
KHD Humboldt Wedag AG
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Filing date
Publication date
Application filed by KHD Humboldt Wedag AG filed Critical KHD Humboldt Wedag AG
Publication of EP1139050A1 publication Critical patent/EP1139050A1/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02Cooling
    • F27D15/0206Cooling with means to convey the charge
    • F27D15/0213Cooling with means to convey the charge comprising a cooling grate
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/24Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
    • F27B9/243Endless-strand conveyor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/24Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
    • F27B2009/2492Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by series of little rams or ratchets, moving the charge along

Definitions

  • the invention relates to a grate cooler with a cooling gas flowing through it Cooling grate over which the items to be cooled such as. B. hot cement clinker is movable.
  • Grate coolers are used in the stone and earth industry the goods previously burned in an oven such as B. cement clinker or other mineral goods immediately afterwards on the cooling grate cool down strongly.
  • items to be cooled via the cooling section are special the thrust grate cooler widely used where the grate system from a variety of alternating fixed and movable
  • grate plate supports each with several with cooling air openings provided and essentially from bottom to top of Grate plates through which cooling air flows are attached.
  • the traveling grate cooler and moving grate cooler is a z.
  • this grate cooler type is the wear problem that occurs in particular with the moving grate cooler especially in the overlap area of neighboring moving and not moving rows of grate plates, caused by Cement clinker abrasion and good jamming in the overlap area of the grate plates.
  • the invention has for its object a further grate cooler variant to create that is relatively simple, whose Cooling grate is largely protected from wear and tear which is easy and can be operated with a high cooling efficiency.
  • the cooling grate is static, i. H. he no longer contains moving parts.
  • Above the fixed Cooling grids are several from each other transversely to the refrigerated goods transport direction spaced rotatably mounted tubular shafts, and on the side of the tubular shaft facing away from the fixed cooling grate are attached to this extending bucket arms, a reciprocating movement in the direction of refrigerated goods exercise.
  • These blade arms which act as one-armed levers, the one on the front and one on the back have a wedge surface, with their push surface in the are called chilled goods layer and they move in their forward and
  • the hot refrigerated goods bed successively oscillates backwards to the cooling grate end.
  • cooling air can be flowed through, wherein this cooling medium through openings distributed around the circumference of the tube shaft exit into the refrigerated goods bed and there additional cooling of the refrigerated goods can cause.
  • cooling grate is stationary and contains no moving parts, it is particularly advantageous to use cooling plates or Areas with refrigerated goods troughs or chilled goods pockets for holding and to hold refrigerated goods so that when operating the Grate cooler on the static cooling grate a lower pre-cooled Good bed layer or protective layer is formed over which the Hot goods to be cooled by means of the swinging bucket arms is moved.
  • the bearings and the pendulum drive or Pendulum drives of the shafts with the bucket arms are included Advantage outside the cooler side walls from the hot refrigerated goods arranged protected.
  • the swivel angle comprises between the thrust surface of the swinging bucket arms and the cooling grate level a range of about 160 ° to about 90 °, so a difference swivel angle range of about 70 °. That is, the Thrust surfaces of the swinging bucket arms are able to do that hot items to be chilled obliquely up to approximately parallel to the cooling grate level to move in the refrigerated goods transport direction, d. H. by the limitation The forward pendulum movement prevents the refrigerated goods from the push surfaces of the bucket arms pressed against the cooling grate becomes. At the same time, the pendulum movement of the bucket arms achieved that deep frying or caking of the hot chilled goods such as B.
  • the hot is discharged from a rotary kiln Cement clinker 10 via a Gutüberleit Anlagen 11 such.
  • the Cooling grate 12 is generally composed of individual grate plates, which are designed so that on the one hand a diarrhea of cooling Good 10 is avoided as much as possible by the cooling grate, and that on the other hand the permeability of the cooling grate to the cooling air 13 is maintained.
  • the movement of the hot clinker 10 over the cooled bed position 14 happens in such a way that above the cooling grate 12 transverse to the refrigerated goods transport direction several spaced apart rotatably mounted tubular shafts 15a, 15b, 15c etc. are arranged those on the side facing away from the cooling grate 12 upwards extending blade arms 16a, 16b, 16c are attached, which in Refrigerated goods transport direction a reciprocating pendulum movement Can exercise 17, which is highlighted in Figure 2 large.
  • blade arms 16a, 16b, 16c have one on their front Push surface on which by screwing, welding or other connection technology a wear plate 18 is attached. How can be seen particularly in Figure 3, the blade arms on their Back a wedge surface 19, d. H. when swinging back Bucket arms 16a, 16b, 16c slide them arrow-shaped or streamlined through the refrigerated goods bed, reducing the effort as well wear is minimized.
  • the hot refrigerated goods 10 from Start to end of the cooling grate 12 over the already cooled lower bed level 14 transported successively.
  • the forward pendulum motion of the bucket arms is limited in the way that the bucket arms do not place the refrigerated goods on the cooling grate 12 press, d. H.
  • the angle ⁇ between the thrust surface 18 of the bucket arms and the cooling grate level is at least about 90 °. All in all can the swivel angle ⁇ between the thrust surface 18 of the swinging bucket arms and the level of the cooling grate 12 an area from about 160 ° to 90 °, so the difference is a swivel angle range Include 17 of about 70 °.
  • Bucket arms 16 attached adjacent to each other, namely interchangeable, e.g. B. as shown in Figure 2 by a tongue and groove connection.
  • the z. B. consisting of a cast body Blade arm 16a has a groove 20 in its hub, into which a tongue 21 engages the hollow shaft 15a.
  • further grooves 22 are present in the hub of the blade arm 16a be, and by different occupancy of the grooves 20, 22nd etc. adjacent blade arms 16 on a shaft can also be a have different radial alignment or setting, wherein regionally when all bucket arms commute together different conveyor speeds in the to be transported hot refrigerated goods layer 10 can be achieved.
  • This can, for. B. a special one Influence on the avoidance of the so-called "red river” formation which are still red hot Clinker clump over the embankment section of the hot pent up Cool goods can roll down.
  • the blade arms 16 can be worn out completely Wear plates 18 are used up, also by implementation other places in the grate cooler according to the invention.
  • the blade arms 16a, 16b Adjacent shafts 15a, 15b offset from each other, i. H. on gap can be arranged, whereby with the swinging bucket arms the entire width of the refrigerated goods bed 10 in order to transport it as well as to break up baked clinker blocks is detectable.
  • the bearings 23 and the pendulum drive 24 with the bucket arms occupied shafts 15a etc. are protected outside the radiator side walls arranged.
  • These tubular shafts 15a etc. can be used for protection against thermal overload from a cooling medium such as e.g. B. flow of cooling air through the perforations, not shown the hollow shafts in the refrigerated goods bed for the purpose of its additional Cooling can leak.
  • a cooling medium such as e.g. B. flow of cooling air through the perforations, not shown the hollow shafts in the refrigerated goods bed for the purpose of its additional Cooling can leak.
  • Each wave 15a, 15b etc. is by one own drive 24 driven; would also be possible a common drive of several tubular shafts.
  • On the drive 24 is the Pendulum path 17 between the two end positions of the blade arms 16a etc. individually adjustable.
  • the grate cooler according to the invention is characterized by a high Cooling efficiency, largely protected against wear Cooling grate and a simple and particularly low Construction.
  • the invention is not only applicable to grate cooler types with chamber-ventilated grate plates, in which the lower part of the Radiator below the cooling grate in several separate Chambers is divided, but also for grate cooler types with row-ventilated Grate plates, where the cooling air is through hollow grate plate support beams is introduced from which the cooling air in it attached special provided with cooling air channels Incoming rust plates.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

Um einen verhältnismäßig einfach gebauten Rostkühler zu schaffen, dessen Kühlrost weitgehend vor Verschleiß geschützt ist und der sich einfach und mit einem hohen Kühlwirkungsgrad betreiben lässt, wird erfindungsgemäß vorgeschlagen, oberhalb des statischen, keine bewegten Teile enthaltenden Kühlrostes (12) quer zur Kühlguttransportrichtung mehrere voneinander beabstandete drehbar gelagerte Rohrwellen (15a, 15b, 15c) anzuordnen, an denen sich nach oben erstreckende und als einarmige Hebel wirkende Schaufelarme (16a, 16b, 16c) befestigt sind, die in Kühlguttransportrichtung eine hin- und hergehende Pendelbewegung (17) ausüben, wobei die Schaufelarme an ihrer Vorderseite eine Schubfläche und an ihrer Rückseite eine Keilfläche aufweisen und bei ihrer Pendelbewegung das heiße Kühlgutbett vom Rostkühleranfang sukzessive zum Rostkühlerende bewegen. <IMAGE>In order to create a relatively simply constructed grate cooler, the cooling grate of which is largely protected against wear and which can be operated easily and with a high cooling efficiency, the invention proposes, above the static cooling grate (12) containing no moving parts, several spaced apart from one another transversely to the cooling goods transport direction to arrange rotatably mounted tubular shafts (15a, 15b, 15c) to which are attached paddle arms (16a, 16b, 16c) which extend upwards and act as one-armed levers and which perform a reciprocating pendulum movement (17) in the direction of cooling goods transport, the Bucket arms have a push surface on their front side and a wedge surface on their back and move the hot refrigerated goods bed successively from the start of the grate cooler to the end of the grate cooler during their pendulum movement. <IMAGE>

Description

Die Erfindung betrifft einen Rostkühler mit einem von Kühlgas durchströmten Kühlrost, über den das abzukühlende Kühlgut wie z. B. heißer Zementklinker bewegbar ist.The invention relates to a grate cooler with a cooling gas flowing through it Cooling grate over which the items to be cooled such as. B. hot cement clinker is movable.

Rostkühler werden in der Steine- und Erdenindustrie eingesetzt, um das zuvor in einem Ofen gebrannte Gut wie z. B. Zementklinker oder andere mineralische Güter unmittelbar anschließend auf dem Kühlrost stark abzukühlen. Zwecks Transports des heißen abzukühlenden Kühlgutes über die Kühlstrecke sind neben Wanderrostkühlern besonders die Schubrostkühler weit verbreitet, bei denen das Rostsystem aus einer Vielzahl von abwechselnd ortsfesten und beweglichen Rostplattenträgern besteht, auf denen jeweils mehrere mit Kühlluftöffnungen versehene und im wesentlichen von unten nach oben von Kühlluft durchströmte Rostplatten befestigt sind. Dabei wechseln sich in Förderrichtung gesehen 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 gemeinsam oszillierende Bewegung aller beweglichen Rostplattenreihen wird das zu kühlende Gut, z. B. der heiße Zementklinker, schubweise transportiert und dabei gekühlt. Dabei ist es bekannt, zur Schonung der Rostplatten vor thermischmechanischer Überbeanspruchung die Plattenoberseiten mit Mulden bzw. Taschen zur Aufnahme und zum Festhalten von Kühlgut zu versehen, welches dann eine Schutzlage für das darüber gleitende heiße Kühlgut bildet (EP-B-0 634 619).Grate coolers are used in the stone and earth industry the goods previously burned in an oven such as B. cement clinker or other mineral goods immediately afterwards on the cooling grate cool down strongly. In order to transport the hot one to be cooled In addition to traveling grate coolers, items to be cooled via the cooling section are special the thrust grate cooler widely used where the grate system from a variety of alternating fixed and movable There are grate plate supports, each with several with cooling air openings provided and essentially from bottom to top of Grate plates through which cooling air flows are attached. This changes In the direction of conveyance, stationary rows of grate plates with back and forth moving rows of grate plates, which go beyond their corresponding and movable grate plate carrier on one or more longitudinally driven driven push frame together are attached. Through the oscillating movement of everyone movable rows of grate plates are the goods to be cooled, e.g. B. the hot cement clinker, transported in batches and cooled. It is known to protect the grate plates from thermal mechanical Overuse the tops of the plates with hollows or to provide pockets for holding and holding refrigerated goods, which is then a protective layer for the hot gliding over it Forms refrigerated goods (EP-B-0 634 619).

Als Alternative zu einem Rostkühler, bei dem der ganze Kühlrost oder Teile davon bewegt sind wie z. B. beim Wanderrostkühler und Schubrostkühler, ist ein z. B. aus der EP-A-0 718 578 bekannter Rostkühler bekannt, bei dem der von Kühlluft durchströmte Kühlrost nicht bewegt ist, sondern bei dem oberhalb der Rostfläche eine Reihe von hin- und herbeweglichen balkenförmigen Förderelementen quer zur Förderrichtung des Gutes angeordnet ist, wobei durch die Hin- und Herbewegung dieser balkenförmigen Förderelemente im abzukühlenden Gutbett das Gutmaterial sukzessive vom Kühleranfang zum Kühlerende bewegt und dabei gekühlt werden soll. Bei diesem Rostkühlertyp soll das insbesondere beim Schubrostkühler auftretende Verschleißproblem besonders im Überlappungsbereich benachbarter bewegter und nicht bewegter Rostplattenreihen, hervorgerufen durch Zementklinkerabrieb und Gutverklemmungen im Überlappungsbereich der Rostplatten, gemindert sein.As an alternative to a grate cooler in which the entire cooling grate or Parts of it are moved such. B. the traveling grate cooler and moving grate cooler, is a z. B. from EP-A-0 718 578 known grate cooler known in which the cooling grate through which cooling air does not move but with a series of back and forth above the grate surface movable bar-shaped conveying elements transversely to the conveying direction of the goods is arranged, with the back and forth movement of these bar-shaped conveying elements to be cooled Gutbett the good material successively from the cooler start to the cooler end should be moved while cooling. With this grate cooler type is the wear problem that occurs in particular with the moving grate cooler especially in the overlap area of neighboring moving and not moving rows of grate plates, caused by Cement clinker abrasion and good jamming in the overlap area of the grate plates.

Der Erfindung liegt die Aufgabe zugrunde, eine weitere Rostkühler-Variante zu schaffen, die verhältnismäßig einfach gebaut ist, deren Kühlrost weitgehend vor Verschleiß geschützt ist und die sich einfach und mit einem hohen Kühlwirkungsgrad betreiben lässt.The invention has for its object a further grate cooler variant to create that is relatively simple, whose Cooling grate is largely protected from wear and tear which is easy and can be operated with a high cooling efficiency.

Diese Aufgabe wird erfindungsgemäß mit einem Rostkühler mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.This object is achieved with a grate cooler Features of claim 1 solved. Advantageous embodiments of the Invention are specified in the subclaims.

Beim erfindungsgemäßen Rostkühler ist der Kühlrost statisch, d. h. er enthält keine bewegten Teile mehr. Oberhalb des feststehenden Kühlrostes sind quer zur Kühlguttransportrichtung mehrere voneinander beabstandete drehbar gelagerte Rohrwellen angeordnet, und an der dem feststehenden Kühlrost abgewandten Seite der Rohrwellen sind an diesen sich nach oben erstreckende Schaufelarme befestigt, die in Kühlguttransportrichtung eine hin- und hergehende Pendelbewegung ausüben. Diese als einarmige Hebel wirkenden Schaufelarme, die an ihrer Vorderseite eine Schubfläche und an ihrer Rückseite eine Keilfläche aufweisen, liegen mit ihrer Schubfläche in der heißen Kühlgutschicht und sie bewegen bei ihrem Vorwärts- und Rückwärtspendeln das heiße Kühlgutbett vom Kühlrostanfang sukzessive zum Kühlrostende. Zum Schutz gegen Überhitzung durch das heiße Klinkerbett können die die Schaufelarme tragenden Hohlwellen von einem Kühlmedium wie z. B. Kühlluft durchströmbar sein, wobei dieses Kühlmedium über um den Rohrwellenumfang verteilte Öffnungen in das Kühlgutbett austreten und dort eine zusätzliche Kühlung des Kühlgutes bewirken kann.In the grate cooler according to the invention, the cooling grate is static, i. H. he no longer contains moving parts. Above the fixed Cooling grids are several from each other transversely to the refrigerated goods transport direction spaced rotatably mounted tubular shafts, and on the side of the tubular shaft facing away from the fixed cooling grate are attached to this extending bucket arms, a reciprocating movement in the direction of refrigerated goods exercise. These blade arms, which act as one-armed levers, the one on the front and one on the back have a wedge surface, with their push surface in the are called chilled goods layer and they move in their forward and The hot refrigerated goods bed successively oscillates backwards to the cooling grate end. To protect against overheating from the hot clinker bed can be the hollow shafts carrying the bucket arms from a cooling medium such. B. cooling air can be flowed through, wherein this cooling medium through openings distributed around the circumference of the tube shaft exit into the refrigerated goods bed and there additional cooling of the refrigerated goods can cause.

Weil der Kühlrost feststehend ist und keine bewegten Teile enthält, ist es besonders vorteilhaft, den Kühlrost mit Rostplatten bzw. Bereichen mit Kühlgutmulden bzw. Kühlguttaschen zur Aufnahme und zum Festhalten von Kühlgut auszustatten, so dass beim Betrieb des Rostkühlers auf dem statischen Kühlrost eine untere vorgekühlte Gutbettlage bzw. Schutzlage gebildet wird, über welche das abzukühlende heiße Gut vermittels der pendelnden Schaufelarme bewegt wird. Die Lager sowie der Pendelantrieb bzw. die Pendelantriebe der mit den Schaufelarmen besetzten Wellen sind mit Vorteil außerhalb der Kühlerseitenwände vom heißen Kühlgut geschützt angeordnet.Because the cooling grate is stationary and contains no moving parts, it is particularly advantageous to use cooling plates or Areas with refrigerated goods troughs or chilled goods pockets for holding and to hold refrigerated goods so that when operating the Grate cooler on the static cooling grate a lower pre-cooled Good bed layer or protective layer is formed over which the Hot goods to be cooled by means of the swinging bucket arms is moved. The bearings and the pendulum drive or Pendulum drives of the shafts with the bucket arms are included Advantage outside the cooler side walls from the hot refrigerated goods arranged protected.

Nach einem weiteren Merkmal der Erfindung umfasst der Schwenkwinkel zwischen der Schubfläche der pendelnden Schaufelarme und der Kühlrostebene einen Bereich von etwa 160° bis etwa 90°, also einen Differenz-Schwenkwinkelbereich von etwa 70°. Das heißt, die Schubflächen der pendelnden Schaufelarme sind in der Lage, das heiße Kühlgut schräg nach oben bis etwa parallel zur Kühlrostebene in Kühlguttransportrichtung zu bewegen, d. h. durch die Begrenzung der Vorwärts-Pendelbewegung ist vermieden, dass das Kühlgut von den Schubflächen der Schaufelarme gegen den Kühlrost gepresst wird. Gleichzeitig wird durch die Pendelbewegung der Schaufelarme erreicht, dass Zusammenfrittungen bzw. Zusammenbackungen des heißen Kühlgutes wie z. B. Zementklinker durch die Schaufelarme wieder aufgebrochen werden, ohne dass diese in die untere kältere Kühlgutschicht transportiert werden. Die Höhe der pendelnden Schaufelarme, d. h. also die radiale Erstreckung der einseitigen Hebelarme kann unterschiedlich sein; so können im Anfangsbereich des Rostkühlers besonders hohe Schaufelarme eingesetzt werden, um den Aufbrecheffekt von Kühlgutzusammenbackungen zu begünstigen. Dabei kann ein in einem Rostkühler konventioneller Bauart bisher oft eingesetzt gewesener Zwischenbrecher z. B. in Gestalt von Brechwalzen entfallen.According to a further feature of the invention, the swivel angle comprises between the thrust surface of the swinging bucket arms and the cooling grate level a range of about 160 ° to about 90 °, so a difference swivel angle range of about 70 °. That is, the Thrust surfaces of the swinging bucket arms are able to do that hot items to be chilled obliquely up to approximately parallel to the cooling grate level to move in the refrigerated goods transport direction, d. H. by the limitation The forward pendulum movement prevents the refrigerated goods from the push surfaces of the bucket arms pressed against the cooling grate becomes. At the same time, the pendulum movement of the bucket arms achieved that deep frying or caking of the hot chilled goods such as B. cement clinker through the bucket arms can be broken open again without going into the lower colder Refrigerated goods layer are transported. The amount of commuting Bucket arms, d. H. thus the radial extension of the one-sided lever arms can be different; so in the beginning of the Rust cooler particularly high blade arms are used to to promote the break-up effect of refrigerated goods caking. So far, a conventional design in a grate cooler can often used breaker z. B. in the form of crushing rollers omitted.

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 based on of the embodiment shown schematically in the figures explained in more detail.

Es zeigt:

Fig. 1:
ausschnittsweise schematisch einen Vertikallängsschnitt durch den erfindungsgemäßen Rostkühler zur Kühlung von aus einem Drehrohrofen ausgetragenen heißen Zementklinker, mit den im Kühlgutbett pendelnden Schaufelarmen,
Fig. 2:
herausgezeichnet in vergrößertem Maßstab die Seitenansicht auf einen Schaufelarm in zwei Pendel-Positionen, und
Fig. 3:
ausschnittsweise und schematisch die Draufsicht auf den Rostkühler der Figur 1.
It shows:
Fig. 1:
partially a schematic vertical longitudinal section through the grate cooler according to the invention for cooling hot cement clinker discharged from a rotary kiln, with the shovel arms swinging in the bed of refrigerated goods,
Fig. 2:
drawn out on an enlarged scale the side view of a bucket arm in two pendulum positions, and
Fig. 3:
Detail and schematic of the top view of the grate cooler of Figure 1.

Nach Figur 1 wird der aus einem Drehrohrofen ausgetragene heiße Zementklinker 10 über eine Gutüberleiteinrichtung 11 wie z. B. feststehender Treppenrost zum Kühlrost 12 gefördert, der im wesentlichen von unten nach oben von Kühlluft 13 durchströmbar ist und der statisch angeordnet ist, d. h. der keine bewegten Teile enthält. Der Kühlrost 12 ist in der Regel aus einzelnen Rostplatten zusammengesetzt, die so konstruiert sind, dass einerseits ein Durchfall an abzukühlendem Gut 10 durch den Kühlrost möglichst vermieden ist, und dass andererseits die Durchlässigkeit des Kühlrostes für die Kühlluft 13 aufrecht erhalten bleibt. Mit Vorteil weisen die Rostplatten des Kühlrostes 12 an ihrer Oberseite Kühlgutmulden bzw. Kühlguttaschen zur Aufnahme und zum Festhalten von Kühlgut 10 auf, so dass auf dem Kühlrost 12 eine untere vorgekühlte Gutbettlage bzw. Schutzlage 14 gebildet ist, über welche der zu kühlende heiße Klinker 10 bewegt wird, so dass ein Verschleiß des Kühlrostes bzw. dessen Rostplatten minimiert ist.According to Figure 1, the hot is discharged from a rotary kiln Cement clinker 10 via a Gutüberleiteinrichtung 11 such. B. fixed Conveyed stair grate to the cooling grate 12, which is essentially Cooling air 13 can flow through from the bottom to the top is statically arranged, d. H. that contains no moving parts. The Cooling grate 12 is generally composed of individual grate plates, which are designed so that on the one hand a diarrhea of cooling Good 10 is avoided as much as possible by the cooling grate, and that on the other hand the permeability of the cooling grate to the cooling air 13 is maintained. The grate plates of the Cooling grate 12 on the top of chilled goods troughs or chilled goods pockets for receiving and holding refrigerated goods 10, so that on the cooling grate 12 has a lower pre-cooled material bed layer or protective layer 14 is formed, over which the hot clinker 10 to be cooled moves is, so that wear of the cooling grate or its grate plates is minimized.

Die Bewegung des heißen Klinkers 10 über die abgekühlte Gutbettlage 14 geschieht in der Weise, dass oberhalb des Kühlrostes 12 quer zur Kühlguttransportrichtung mehrere voneinander beabstandete drehbar gelagerte Rohrwellen 15a, 15b, 15c etc. angeordnet sind, an denen an der dem Kühlrost 12 abgewandten Seite sich nach oben erstreckende Schaufelarme 16a, 16b, 16c befestigt sind, die in Kühlguttransportrichtung eine hin- und hergehende Pendelbewegung 17 ausüben können, die in Figur 2 groß herausgezeichnet ist.The movement of the hot clinker 10 over the cooled bed position 14 happens in such a way that above the cooling grate 12 transverse to the refrigerated goods transport direction several spaced apart rotatably mounted tubular shafts 15a, 15b, 15c etc. are arranged those on the side facing away from the cooling grate 12 upwards extending blade arms 16a, 16b, 16c are attached, which in Refrigerated goods transport direction a reciprocating pendulum movement Can exercise 17, which is highlighted in Figure 2 large.

Diese Schaufelarme 16a, 16b, 16c weisen an ihrer Vorderseite eine Schubfläche auf, an der durch Verschraubung, Verschweißung oder andere Verbindungstechnik eine Verschleißplatte 18 befestigt ist. Wie besonders in Figur 3 zu sehen ist, weisen die Schaufelarme an ihrer Rückseite eine Keilfläche 19 auf, d. h. beim Zurückpendeln der Schaufelarme 16a, 16b, 16c gleiten diese pfeilförmig bzw. stromlinienförmig durch das Kühlgutbett, wodurch der Kraftaufwand sowie der Verschleiß minimiert sind. Jedenfalls wird beim Pendeln der als einarmige Hebel wirkenden Schaufelarme das heiße Kühlgut 10 vom Anfang bis zum Ende des Kühlrostes 12 über die bereits abgekühlte untere Gutbettlage 14 sukzessive transportiert.These blade arms 16a, 16b, 16c have one on their front Push surface on which by screwing, welding or other connection technology a wear plate 18 is attached. How can be seen particularly in Figure 3, the blade arms on their Back a wedge surface 19, d. H. when swinging back Bucket arms 16a, 16b, 16c slide them arrow-shaped or streamlined through the refrigerated goods bed, reducing the effort as well wear is minimized. Anyway, when commuting the as one-armed lever acting scoop arms the hot refrigerated goods 10 from Start to end of the cooling grate 12 over the already cooled lower bed level 14 transported successively.

Die Vorwärts-Pendelbewegung der Schaufelarme ist in der Weise begrenzt, dass die Schaufelarme das Kühlgut nicht auf den Kühlrost 12 pressen, d. h. der Winkel α zwischen der Schubfläche 18 der Schaufelarme und der Kühlrostebene beträgt im Minimum etwa 90°. Insgesamt kann der Schwenkwinkel β zwischen der Schubfläche 18 der pendelnden Schaufelarme und der Ebene des Kühlrosts 12 einen Bereich von etwa 160° bis 90°, also in der Differenz einen Schwenkwinkelbereich 17 von etwa 70° umfassen. Auf diese Weise sind die Schaufelarme mit ihren Schaufeln 18 in der Lage, das heiße Kühlgut schräg nach oben bis maximal etwa parallel zur Kühlrostebene in Kühlguttransportrichtung zu bewegen, und sie sind dabei auch in der Lage, Zusammenbackungen von heißem Kühlgut wieder aufzubrechen. Jedenfalls ist vermieden, dass das heiße Kühlgut 10 in die bereits abgekühlte untere Gutbettlage 14 gedrückt wird.The forward pendulum motion of the bucket arms is limited in the way that the bucket arms do not place the refrigerated goods on the cooling grate 12 press, d. H. the angle α between the thrust surface 18 of the bucket arms and the cooling grate level is at least about 90 °. All in all can the swivel angle β between the thrust surface 18 of the swinging bucket arms and the level of the cooling grate 12 an area from about 160 ° to 90 °, so the difference is a swivel angle range Include 17 of about 70 °. That way they are Bucket arms with their blades 18 are able to handle the hot refrigerated goods diagonally up to a maximum of approximately parallel to the cooling grate level in Moving refrigerated goods transport direction, and they are also in the Able to break up cakes of hot chilled goods again. In any case, it is avoided that the hot refrigerated goods 10 are already in the cooled lower material bed layer 14 is pressed.

Wie aus Figur 3 ersichtlich, sind auf einer Welle 15a bzw. 15b mehrere Schaufelarme 16 benachbart zueinander befestigt, und zwar auswechselbar, z. B. wie aus Figur 2 ersichtlich durch eine Nut-Feder-Verbindung. Dazu hat der z. B. aus einem Gusskörper bestehende Schaufelarm 16a in seiner Nabe eine Nut 20, in die eine Feder 21 der Hohlwelle 15a eingreift. Wie aus Figur 2 noch ersichtlich, können in der Nabe des Schaufelarms 16a noch weitere Nuten 22 vorhanden sein, und durch unterschiedliche Belegung der Nuten 20, 22 etc. können auf einer Welle benachbarte Schaufelarme 16 auch eine unterschiedliche radiale Ausrichtung bzw. Einstellung aufweisen, wobei beim gemeinsamen Pendeln aller Schaufelarme dadurch regional unterschiedliche Fördergeschwindigkeiten in der zu transportierenden heißen Kühlgutschicht 10 erzielbar sind. Dadurch kann z. B. ein besonderer Einfluss auf die Vermeidung der sogenannten "red river"-Bildung genommen werden, bei welcher noch rot glühende heiße Klinkerbrocken über die Böschungsstrecke des heißen aufgestauten Kühlgutes herabrollen können.As can be seen from FIG. 3, there are several on one shaft 15a or 15b Bucket arms 16 attached adjacent to each other, namely interchangeable, e.g. B. as shown in Figure 2 by a tongue and groove connection. For this, the z. B. consisting of a cast body Blade arm 16a has a groove 20 in its hub, into which a tongue 21 engages the hollow shaft 15a. As can still be seen from FIG. 2, further grooves 22 are present in the hub of the blade arm 16a be, and by different occupancy of the grooves 20, 22nd etc. adjacent blade arms 16 on a shaft can also be a have different radial alignment or setting, wherein regionally when all bucket arms commute together different conveyor speeds in the to be transported hot refrigerated goods layer 10 can be achieved. This can, for. B. a special one Influence on the avoidance of the so-called "red river" formation which are still red hot Clinker clump over the embankment section of the hot pent up Cool goods can roll down.

Die Schaufelarme 16 können bis zum vollständigen Verschleiß der Verschleißplatten 18 aufgebraucht werden, auch durch Umsetzung an anderen Stellen im erfindungsgemäßen Rostkühler.The blade arms 16 can be worn out completely Wear plates 18 are used up, also by implementation other places in the grate cooler according to the invention.

Ferner ist aus Figur 3 ersichtlich, dass die Schaufelarme 16a, 16b benachbarter Wellen 15a, 15b versetzt zueinander, d. h. auf Lücke angeordnet sein können, wodurch mit den pendelnden Schaufelarmen die gesamte Breite des Kühlgutbettes 10 zwecks dessen Transports sowie auch zwecks Aufbrechens zusammengebackener Klinkerbrocken erfassbar ist.It can also be seen from FIG. 3 that the blade arms 16a, 16b Adjacent shafts 15a, 15b offset from each other, i. H. on gap can be arranged, whereby with the swinging bucket arms the entire width of the refrigerated goods bed 10 in order to transport it as well as to break up baked clinker blocks is detectable.

Die Lager 23 sowie der Pendelantrieb 24 der mit den Schaufelarmen besetzten Wellen 15a etc. sind geschützt außerhalb der Kühlerseitenwände angeordnet. Diese Rohrwellen 15a etc. können zum Schutz gegen thermische Überbeanspruchung von einem Kühlmedium wie z. B. Kühlluft durchströmt sein, die durch nicht dargestellte Perforierungen der Hohlwellen in das Kühlgutbett zwecks dessen zusätzlicher Kühlung austreten kann. Jede Welle 15a, 15b etc. ist durch je einen eigenen Antrieb 24 angetrieben; ebenfalls mögliche wäre aber auch ein gemeinsamer Antrieb mehrerer Rohrwellen. Am Antrieb 24 ist der Pendelweg 17 zwischen den beiden Endlagen der Schaufelarme 16a etc. individuell einstellbar.The bearings 23 and the pendulum drive 24 with the bucket arms occupied shafts 15a etc. are protected outside the radiator side walls arranged. These tubular shafts 15a etc. can be used for protection against thermal overload from a cooling medium such as e.g. B. flow of cooling air through the perforations, not shown the hollow shafts in the refrigerated goods bed for the purpose of its additional Cooling can leak. Each wave 15a, 15b etc. is by one own drive 24 driven; would also be possible a common drive of several tubular shafts. On the drive 24 is the Pendulum path 17 between the two end positions of the blade arms 16a etc. individually adjustable.

Der erfindungsgemäße Rostkühler zeichnet sich durch einen hohen Kühlwirkungsgrad, durch einen gegen Verschleiß weitgehend geschützten Kühlrost sowie durch eine einfache und besonders niedrige Bauweise aus. Die Erfindung ist anwendbar nicht nur bei Rostkühlertypen mit kammerbelüfteten Rostplatten, bei denen das Unterteil des Kühlers unterhalb des Kühlrosts in mehrere voneinander getrennte Kammern unterteilt ist, sondern auch bei Rostkühlertypen mit reihenbelüfteten Rostplatten, bei denen die Kühlluft durch hohle Rostplattenträgerbalken herangeführt wird, aus denen die Kühlluft in daran befestigte entsprechend mit Kühlluftkanälen versehene spezielle Rostplatten einströmt.The grate cooler according to the invention is characterized by a high Cooling efficiency, largely protected against wear Cooling grate and a simple and particularly low Construction. The invention is not only applicable to grate cooler types with chamber-ventilated grate plates, in which the lower part of the Radiator below the cooling grate in several separate Chambers is divided, but also for grate cooler types with row-ventilated Grate plates, where the cooling air is through hollow grate plate support beams is introduced from which the cooling air in it attached special provided with cooling air channels Incoming rust plates.

Claims (10)

Rostkühler mit einem von Kühlgas durchströmten Kühlrost (12), über den das abzukühlende Kühlgut wie z. B. heißer Zementklinker bewegbar ist,
gekennzeichnet durch folgende Merkmale: a) oberhalb des Kühlrostes (12), der feststehend ist, sind quer zur Kühlguttransportrichtung mehrere voneinander beabstandete drehbar gelagerte Rohrwellen (15a, 15b, 15c) angeordnet, b) an der dem Kühlrost (12) abgewandten Seite der Rohrwellen sind an diesen sich nach oben erstreckende Schaufelarme (16a, 16b, 16c) befestigt, die in Kühlguttransportrichtung eine hin- und hergehende Pendelbewegung (17) ausüben, c) die Schaufelarme (16a, 16b, 16c) weisen an ihrer Vorderseite eine Schubfläche (18) und an ihrer Rückseite eine Keilfläche (19) auf.
Grate cooler with a cooling grate through which cooling gas flows (12), via which the items to be cooled such as. B. hot cement clinker is movable,
characterized by the following features: a) above the cooling grate (12), which is stationary, a plurality of mutually spaced, rotatably mounted tubular shafts (15a, 15b, 15c) are arranged transversely to the refrigerated goods transport direction, b) on the side of the tubular shafts facing away from the cooling grate (12), paddle arms (16a, 16b, 16c), which extend upwards and which perform a reciprocating pendulum movement (17) in the direction of cooling goods transport, are fastened thereto, c) the blade arms (16a, 16b, 16c) have a thrust surface (18) on their front and a wedge surface (19) on their rear.
Rostkühler nach Anspruch 1,
dadurch gekennzeichnet, dass die Vorwärts-Pendelbewegung der Schaufelarme in der Weise begrenzt ist, dass die Schaufelarme das Kühlgut nicht auf den Kühlrost pressen, d. h. der Winkel α zwischen der Schubfläche (18) der Schaufelarme (16a) und der Kühlrostebene beträgt im Minimum etwa 90°.
Grate cooler according to claim 1,
characterized in that the forward pendulum movement of the bucket arms is limited in such a way that the bucket arms do not press the refrigerated goods onto the cooling grate, ie the angle α between the thrust surface (18) of the bucket arms (16a) and the cooling grate plane is at least about 90 °.
Rostkühler nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass der Schwenkwinkel β zwischen der Schubfläche (18) der pendelnden Schaufelarme und der Kühlrostebene einen Bereich von etwa 160° bis etwa 90°, also in der Differenz einen Schwenkwinkelbereich (17) von etwa 70° umfaßt.
Grate cooler according to claim 1 or 2,
characterized in that the swivel angle β between the thrust surface (18) of the oscillating blade arms and the cooling grate plane comprises a range from approximately 160 ° to approximately 90 °, that is to say the difference is a swivel angle region (17) of approximately 70 °.
Rostkühler nach Anspruch 1,
dadurch gekennzeichnet, dass auf der Welle (15a, 15b) mehrere Schaufelarme auswechselbar befestigt sind, z. B. durch Nut-Feder-Verbindung (20, 21).
Grate cooler according to claim 1,
characterized in that on the shaft (15a, 15b) a plurality of bucket arms are interchangeably attached, e.g. B. by tongue and groove connection (20, 21).
Rostkühler nach Anspruch 4,
dadurch gekennzeichnet, dass bei der Nut-Feder-Verbindung (20, 21) mehrere Nuten (20, 22) vorhanden sind und die an einer Welle (15a) befestigten Schaufelarme (16a) durch unterschiedliche Belegung der Nuten eine unterschiedliche radiale Ausrichtung bzw. Einstellung aufweisen.
Grate cooler according to claim 4,
characterized in that the tongue and groove connection (20, 21) has a plurality of grooves (20, 22) and the blade arms (16a) attached to a shaft (15a) have a different radial orientation or setting due to different occupancy of the grooves exhibit.
Rostkühler nach den Ansprüchen 1 bis 5,
dadurch gekennzeichnet, dass die Schaufelarme (16a, 16b) benachbarter Wellen (15a, 15b) versetzt zueinander, d. h. auf Lücke angeordnet sind.
Grate cooler according to claims 1 to 5,
characterized in that the blade arms (16a, 16b) of adjacent shafts (15a, 15b) are offset from one another, ie are arranged on a gap.
Rostkühler nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass der statische keine bewegten Teile enthaltende Kühlrost (12) Rostplatten bzw. Kühlrostabschnitte mit Kühlgutmulden bzw. Kühlguttaschen zur Aufnahme und zum Festhalten von Kühlgut aufweist, so dass auf dem Kühlrost eine untere vorgekühlte Gutbettlage bzw. Schutzlage (14) gebildet ist, über welche das abzukühlende Gut (10) vermittels der pendelnden Schaufelarme (16a bis 16c) in Kühlrosttransportrichtung bewegbar ist.
Grate cooler according to one of claims 1 to 6,
characterized in that the static cooling grate (12) containing no moving parts has grate plates or cooling grate sections with chilled goods troughs or chilled goods pockets for holding and holding chilled goods, so that a lower pre-cooled good bed layer or protective layer (14) is formed on the cooling grate, Via which the goods (10) to be cooled can be moved in the cooling grate transport direction by means of the oscillating paddle arms (16a to 16c).
Rostkühler nach Anspruch 1,
dadurch gekennzeichnet, dass die Schubflächen der Schaufelarme (16a) Verschleißplatten (18) tragen.
Grate cooler according to claim 1,
characterized in that the thrust surfaces of the bucket arms (16a) carry wear plates (18).
Rostkühler nach den Ansprüchen 1 bis 8,
dadurch gekennzeichnet, dass die Lager (23) sowie der Pendelantrieb (24) der mit den Schaufelarmen besetzten Wellen (15a etc.) außerhalb der Kühlerseitenwände angeordnet sind.
Grate cooler according to claims 1 to 8,
characterized in that the bearings (23) and the pendulum drive (24) of the shafts (15a etc.) which are equipped with the blade arms are arranged outside the radiator side walls.
Rostkühler nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, dass die mit den Schaufelarmen besetzten Wellen (15a etc.) von einem Kühlmedium durchströmbar sind.
Grate cooler according to one of claims 1 to 9,
characterized in that a cooling medium can flow through the shafts (15a etc.) occupied by the blade arms.
EP01106233A 2000-03-25 2001-03-14 Grate cooler Withdrawn EP1139050A1 (en)

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DE10015054A DE10015054A1 (en) 2000-03-25 2000-03-25 Grate cooler
DE10015054 2000-03-25

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009024084A1 (en) * 2007-08-20 2009-02-26 Yuzong Gao A cooler

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100430680C (en) * 2004-02-25 2008-11-05 南京凯盛水泥技术工程有限公司 Cooling machine high-temp fixed bed anti-stack device for industrial furnace
CN102297603A (en) * 2011-07-04 2011-12-28 李晓梅 Rotary cooling machine for granular material
DK179762B1 (en) * 2018-02-28 2019-05-13 Føns Companies Aps Walking Floor Cooler for particulate material with increased vertical shearing
CN115505657A (en) * 2022-10-26 2022-12-23 中冶节能环保有限责任公司 High-temperature steel slag efficient cooling heat exchange method and grate type air cooling bed

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1030944A (en) * 1951-01-12 1953-06-18 Tunnel oven
GB1227786A (en) * 1968-11-23 1971-04-07
DE9403614U1 (en) * 1994-03-03 1995-07-06 Claudius Peters Ag, 21614 Buxtehude Grate cooler with a roller-shaped grate element
EP0718578A2 (en) * 1992-12-23 1996-06-26 F.L. Smidth & Co. A/S Method and cooler for cooling particulate material

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE86667C (en) * 1895-10-16 1896-05-22
FR2102623A5 (en) * 1970-08-12 1972-04-07 Francais Ciments Screen cooler - for cement clinker with air totally recirculated
DE3538059A1 (en) * 1985-10-25 1987-04-30 Krupp Polysius Ag DEVICE FOR COOLING HOT GOODS
DE3616630A1 (en) * 1986-05-16 1987-11-19 Krupp Polysius Ag COOLING DEVICE
ATE123137T1 (en) * 1993-07-15 1995-06-15 Kloeckner Humboldt Deutz Ag GRATE PLATE FOR PANEL GRATE COOLER FOR COOLING HOT FOOD.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1030944A (en) * 1951-01-12 1953-06-18 Tunnel oven
GB1227786A (en) * 1968-11-23 1971-04-07
EP0718578A2 (en) * 1992-12-23 1996-06-26 F.L. Smidth & Co. A/S Method and cooler for cooling particulate material
US5890888A (en) * 1992-12-23 1999-04-06 F. L. Smidth & Co. A/S Method and cooler for cooling particulate material
DE9403614U1 (en) * 1994-03-03 1995-07-06 Claudius Peters Ag, 21614 Buxtehude Grate cooler with a roller-shaped grate element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009024084A1 (en) * 2007-08-20 2009-02-26 Yuzong Gao A cooler

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