EP1695015B1 - Bulk material cooler for cooling hot materials to be cooled - Google Patents

Bulk material cooler for cooling hot materials to be cooled Download PDF

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Publication number
EP1695015B1
EP1695015B1 EP04819217A EP04819217A EP1695015B1 EP 1695015 B1 EP1695015 B1 EP 1695015B1 EP 04819217 A EP04819217 A EP 04819217A EP 04819217 A EP04819217 A EP 04819217A EP 1695015 B1 EP1695015 B1 EP 1695015B1
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EP
European Patent Office
Prior art keywords
cooled
cooler
bulk material
cooling
grate
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Revoked
Application number
EP04819217A
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German (de)
French (fr)
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EP1695015A1 (en
Inventor
Matthias Mersmann
Karl Schinke
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KHD Humboldt Wedag AG
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KHD Humboldt Wedag AG
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Application filed by KHD Humboldt Wedag AG filed Critical KHD Humboldt Wedag AG
Priority to PL04819217T priority Critical patent/PL1695015T3/en
Priority to SI200430362T priority patent/SI1695015T1/en
Publication of EP1695015A1 publication Critical patent/EP1695015A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02—Cooling
    • F27D15/0206—Cooling with means to convey the charge
    • F27D15/0213—Cooling with means to convey the charge comprising a cooling grate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C3/00—Other direct-contact heat-exchange apparatus
    • F28C3/10—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material
    • F28C3/12—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material the heat-exchange medium being a particulate material and a gas, vapour, or liquid
    • F28C3/16—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material the heat-exchange medium being a particulate material and a gas, vapour, or liquid the particulate material forming a bed, e.g. fluidised, on vibratory sieves

Definitions

  • the invention relates to a bulk material cooler with a cooled goods to be cooled such.
  • Grate coolers are used in the stone and earth industry to the previously burned in an oven good such. As cement clinker or other mineral goods immediately afterwards cool down strongly on the cooling grate.
  • the grate cooler are widely used, in which the grate system consists of a variety of alternately stationary and movable grate plate carriers, on each of which provided with cooling air openings and substantially flowed through from bottom to top of cooling air grate plates are attached. Stationary grate plate rows alternate with reciprocating grate plate rows as seen in the conveying direction, which are fastened via their corresponding reciprocating grate plate carriers to one or more longitudinally movably mounted driven push frames.
  • the bulk material delivery rate is decisively influenced by the difference between the cement clinker volume moved in each advance stroke in the conveying direction and the clinker volume which is undesirably moved counter to the conveying direction during the return stroke.
  • the crossbar-shaped pushers are mounted on the top of vertical drive plates aligned in the longitudinal direction of the radiator, which extend through corresponding longitudinal slots of the chilled grate and are driven from beneath the chilled grate. It verproves that it is expensive, the loaded with refrigerated goods cooling grate at the passage points of the drive plates against rust diarrhea seal and thereby keep the material wear occurring within limits.
  • a cooling tunnel for cooling and / or freezing refrigerated goods by means of cold air with application of the so-called "walking floor” conveying principle is known in which the plurality of adjacently arranged floor elements of the cooling tunnel in the transport direction together forward, but not together, but moved back from each other separately.
  • a high bulk material bed should form, which fills the entire cooling tunnel cross-section, so that the cooling gas flows through the stepwise moving bulk material in countercurrent.
  • the floor elements themselves remain uncooled by the cooling gas, so that even therefore the known cooling tunnel would not be suitable to cool from the discharge end of a rotary kiln falling red hot cement clinker.
  • the direct contact of the fresh hot cement clinker with the surface of the floor elements would lead to a high thermal-mechanical wear load and therefore to an insufficient service life of such a cooling tunnel in the case of hot cement clinker.
  • the invention has for its object to provide a bulk material cooler, especially for hot cement clinker, the delivery capacity, the service life and the efficiency of the radiator increases and the wear problems are reduced.
  • the cooling grate carrying the hot goods to be cooled is made up of a plurality of units extending in the longitudinal direction of the cooler arranged side by side elongated floor elements composed at least partially independently of each other between a Vorhubposition inchentransportides and a scrubhubposition are movable so that the goods to be cooled is gradually promoted by the cooler according to the Walking Floor conveying principle.
  • the composite in this way cooling grate for the cooling air is permeable, which flows through the cooling grid and the bulk material bed mounted about in cross-flow from bottom to top, ie the bottom elements serve both as bulk material and asderostbel legislativeungs elements.
  • the floor elements are moved together in their Vorhubterrorism forward, but not moved together in their return stroke together, but in at least two groups in at least two successive steps in succession, in which only a portion of the floor elements, z. B. only every second bottom element seen is moved back across the radiator width.
  • the floor elements are controlled under the dormant bed of bulk material withdrawn so that the bed of bulk material remains at rest and does not join the
  • the controlled movable individual bottom elements of the bulk material cooler according to the invention are designed in the manner of an elongated hollow body profile and they have seen in cross-section carrying the refrigerated goods and for the cooling gas from bottom to top permeable top and a spaced therefrom thedegut-Rost slidefall preventing underside.
  • the underside of all floor elements a plurality of distributed over the length of cooling gas inlet openings for ventilation of the floor elements and with the cooling grate on.
  • the drive of the floor elements to their movement between their Vorhubposition and their remindhubposition takes place from below the cooling grate.
  • the floor element upper sides bearing the refrigerated goods can be provided with any perforations.
  • the tops of the individually individually and / or longitudinally movable in groups floor elements each consist of spaced apart mirror image opposite, but offset from each other arranged gable V-profiles whose V-legs interlock with space inside each other, which latter a labyrinth forms for the refrigerated goods as well as for the cooling air, that is, the labyrinth formed in this way is permeable to the cooling air, but at the same time prevents the refrigerated goods Rost trimfall down.
  • a further feature of the invention may be arranged on the opposite longitudinal sides of the adjacent controlled movable floor elements each overlapping longitudinal webs each forming a horizontal sealing gap going towards zero, whereby the passage of cooling air in the area between adjacent floor elements is prevented.
  • This horizontal seal works without scavenging air and it can be self-adjusting with the assistance of a spring force which always brings the horizontal sealing gap to zero.
  • the cooling grid of the bulk material cooler according to the invention over the length and across the width of the radiator is composed of several floor element modules, wherein thedeguttransporteurs successively arranged floor element modules are coupled such that the coupling elements of the successive floor element modules each one row in particular are claimed only on train.
  • the conveying mechanism for transporting the goods to be cooled is completely independent of the ventilation of the cooling grate.
  • the movement of the floor elements individually or in groups can also be used to the bulk material such. B. to distribute the hot cement clinker on the cooling grid targeted.
  • the cooling grid of the inventive Shen bulk material cooler of several, per module z. B. from three extending in the longitudinal direction of the radiator juxtaposed elongated approximately trough-shaped bottom elements 10, 11, 12 composed independently of each other between a Vorhubposition 13 indeguttransport therapies and a remindhubposition 14 are movable, so that the mounted on the floor elements and indicated in Figure 2 Refrigerated 15 is gradually promoted by the cooler on the walking floor conveying principle.
  • the drive of the individual floor elements 10, 11, 12 of the floor element modules takes place from below the cooling grate via push frames, which are supported on rollers and on which working cylinders engage.
  • the bottom elements 10, 11, 12 of all modules are formed as a hollow body, namely they have in cross section a the goods to be refrigerated 15 and the cooling air 16 from bottom to top permeable top and a spaced therefrom thedegut-Rost slidefall preventing underside 17.
  • the lower sides 17 of all floor elements on a plurality of distributed over the length cooling air inlet openings 18 for the entry of the cooling air 16 for ventilation of the floor elements and cooling of the stored bulk material thereon.
  • the tops of the floor elements may be provided with any perforations permeable to the cooling air 16.
  • the tops of the longitudinally movable floor elements 10, 11, 12 each consist of spaced apart mirror image opposite, but offset from each other arranged saddle roof-shaped V-profiles 19, 20, the V-leg with space interlock, which last forms a labyrinth for the refrigerated goods 15 and for the cooling air 16. This ensures that the bulk material cooler according to the invention is secured against rust rusting.
  • webs 21a, 21b, 21c lying perpendicular to the refrigerated goods transport direction are advantageously arranged for holding the lowermost bulk material layer and avoiding relative movement of this lowermost layer and the respective floor element, which contributes to the wear protection of these floor elements.

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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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Processing Of Solid Wastes (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Pyrane Compounds (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)

Abstract

The invention aims at providing a bulk material cooler particularly for hot cement clinker, wherein the conveyance performance and the efficiency of the cooler are enhanced and problems due to wear are reduced. According to the invention, the cooling grates of several adjacent, elongated bottom elements extending in longitudinal direction of the cooler are put together, said bottom elements being movably controlled independently of one another between a work clearance stroke position in the direction of conveyance of the material to be cooled and a return stroke position in such a way that the material to be cooled is gradually conveyed through the cooler according to the walking floor transport system, wherein the bottom elements are configured as hollow bodies and enable the cold air to go through yet prevent grate sifting of the material to be cooled.

Description

Die Erfindung betrifft einen Schüttgutkühler mit einem das abzukühlende Kühlgut wie z. B. heißen Zementklinker tragenden Kühlrost, der das von einem Kühlgas durchströmte Kühlgut vom Kühlguteintragsende zum Kühlgutaustragsende transportiert.The invention relates to a bulk material cooler with a cooled goods to be cooled such. B. hot cement clinker carrying cooling grid, which transports the flowed through by a cooling gas refrigerated goods from Kühlguteintragsende for Kühlgutaustragsende.

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 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 befestigt sind. Durch die gemeinsam oszillierende Bewegung aller beweglichen Rostplattenreihen wird das zu kühlende heiße Gut schubweise transportiert und dabei gekühlt. Dabei ist es auch bekannt, zur Schonung der Rostplatten vor thermisch-mechanischer Überbeanspruchung die Plattenoberseite mit Mulden bzw. Taschen zur Aufnahme und zum Festhalten von Kühlgut zu versehen, welches dann eine Verschleiß-Schutzlage für das darüber gleitende heiße Kühlgut bildet (EP-B-0 634 619).Grate coolers are used in the stone and earth industry to the previously burned in an oven good such. As cement clinker or other mineral goods immediately afterwards cool down strongly on the cooling grate. For the purpose of transporting the hot goods to be chilled on the cooling route in addition to traveling grate coolers especially the grate cooler are widely used, in which the grate system consists of a variety of alternately stationary and movable grate plate carriers, on each of which provided with cooling air openings and substantially flowed through from bottom to top of cooling air grate plates are attached. Stationary grate plate rows alternate with reciprocating grate plate rows as seen in the conveying direction, which are fastened via their corresponding reciprocating grate plate carriers to one or more longitudinally movably mounted driven push frames. Due to the common oscillating movement of all movable grate plate rows, the hot material to be cooled is transported in batches and thereby cooled. It is also known to protect the grate plates against thermal and mechanical overstress, the top plate with wells or pockets for holding and holding refrigerated goods to provide, which then forms a wear-protective layer for the above sliding hot chilled goods (EP-B-0 634 619).

Zur Vermeidung des Verschleißproblems beim Schubrostkühler im Überlappungsbereich benachbarter bewegter und nicht bewegter Rostplattenreihen, hervorgerufen durch Zementklinkerabrieb und Gutverklemmungen im Überlappungsbereich der Rostplatten, ist als Alternative zu einem konventionellen Schubrostkühler aus der EP-B-1 021 692 sowie DE-A-100 18 142 ein Rostkühlertyp bekannt, bei dem der von Kühlluft durchströmte Kühlrost nicht bewegt wird, sondern feststeht, wobei oberhalb der feststehenden Rostfläche quer zur Kühlguttransportrichtung mehrere Reihen benachbarter hin- und herbeweglicher balkenförmiger Schubelemente angeordnet sind, die zwischen einer Vorhubposition in Kühlguttransportrichtung und einer Rückhubposition bewegt werden, so dass durch die Hin- und Herbewegung dieser Schubelemente im abzukühlenden Gutbett das Gutmaterial vom Kühleranfang zum Kühlerende sukzessive bewegt und dabei gekühlt wird. Infolge der im Schüttgutbett bewegten hoch beanspruchten Schubelemente wird das Schüttgutbett durchmischt, was sich ungünstig auf den thermischen Wirkungsgrad dieses Kühlertyps auswirkt. Die Schüttgut-Förderleistung wird dabei entscheidend durch die Differenz zwischen dem bei jedem Vorhub in Förderrichtung bewegten Zementklinkervolumen und dem bei der Rückhubbewegung unerwünscht entgegen der Förderrichtung bewegten Klinkervolumen beeinflusst. Außerdem sind bei diesem bekannten Rostkühlertyp die querbalkenförmigen Schubelemente auf der Oberseite von vertikalen in Kühlerlängsrichtung ausgerichteten Antriebsplatten befestigt, die sich durch entsprechende Längsschlitze des Kühlrostes hindurch erstrecken und von unterhalb des Kühlrostes angetrieben werden. Es verseht sich, dass es aufwendig ist, den mit Kühlgut beladenen Kühlrost an den Durchtrittsstellen der Antriebsplatten gegen Rostdurchfall abzudichten und dabei den auftretenden Materialverschleiß in Grenzen zu halten.To avoid the problem of wear in the sliding grate cooler in the overlap region of adjacent moving and non-moving grate plate rows, caused by Zementklinkerabrieb and Gutverklemmungen in the overlap region of the grate plates, as an alternative to a conventional grate cooler from EP-B-1 021 692 and DE-A-100 18 142 a Known type grate cooler in which the cooling air flowed through the cooling grate is not moved, but is fixed, above the fixed grate surface transversely to Kühlguttransportrichtung several rows of adjacent reciprocating bar-shaped pushers are arranged, which are moved between a Vorhubposition in Kühlguttransportrichtung and a Rückhubposition, so in that the material of good is successively moved from the beginning of the cooler to the end of the cooler by the reciprocating motion of these pusher elements in the good bed to be cooled and is thereby cooled. As a result of moving in the bulk material bed highly stressed pushers the bulk bed is mixed, which has an adverse effect on the thermal efficiency of this type of cooler. The bulk material delivery rate is decisively influenced by the difference between the cement clinker volume moved in each advance stroke in the conveying direction and the clinker volume which is undesirably moved counter to the conveying direction during the return stroke. Moreover, in this known type of grate cooler, the crossbar-shaped pushers are mounted on the top of vertical drive plates aligned in the longitudinal direction of the radiator, which extend through corresponding longitudinal slots of the chilled grate and are driven from beneath the chilled grate. It verproves that it is expensive, the loaded with refrigerated goods cooling grate at the passage points of the drive plates against rust diarrhea seal and thereby keep the material wear occurring within limits.

Schließlich ist aus der DE-A-196 51 741 ein Kühltunnel zum Kühlen und/oder Gefrieren von Kühlgut mittels Kaltluft mit Anwendung des sogenannten "Walking Floor"-Förderprinzips bekannt, bei dem die mehreren nebeneinander angeordneten Bodenelemente des Kühltunnels in Transportrichtung gemeinsam nach vorn, aber nicht gemeinsam, sondern getrennt voneinander zurückbewegt werden. Über den Bodenelementen soll sich eine hohe Schüttgut-Schüttung ausbilden, die den gesamten Kühltunnelquerschnitt ausfüllt, so dass das Kühlgas das schrittweise bewegte Schüttgut im Gegenstrom durchströmt. Die Bodenelemente selbst bleiben vom Kühlgas ungekühlt, so dass schon deswegen der bekannte Kühltunnel nicht geeignet wäre, aus dem Austragsende eines Drehrohrofens fallenden glühend heißen Zementklinker abzukühlen. Der direkte Kontakt des frischen heißen Zementklinkers mit der Oberfläche der Bodenelemente würde zu einer hohen thermisch-mechanischen Verschleißbelastung und daher zu einer ungenügenden Standzeit eines solchen Kühltunnels im Falle von heißem Zementklinker führen.Finally, from DE-A-196 51 741 a cooling tunnel for cooling and / or freezing refrigerated goods by means of cold air with application of the so-called "walking floor" conveying principle is known in which the plurality of adjacently arranged floor elements of the cooling tunnel in the transport direction together forward, but not together, but moved back from each other separately. About the bottom elements, a high bulk material bed should form, which fills the entire cooling tunnel cross-section, so that the cooling gas flows through the stepwise moving bulk material in countercurrent. The floor elements themselves remain uncooled by the cooling gas, so that even therefore the known cooling tunnel would not be suitable to cool from the discharge end of a rotary kiln falling red hot cement clinker. The direct contact of the fresh hot cement clinker with the surface of the floor elements would lead to a high thermal-mechanical wear load and therefore to an insufficient service life of such a cooling tunnel in the case of hot cement clinker.

Der Erfindung liegt die Aufgabe zugrunde, einen Schüttgutkühler insbesondere für heißen Zementklinker zu schaffen, wobei die Förderleistung, die Standzeit und der Wirkungsgrad des Kühlers erhöht und die Verschleißprobleme gemindert sind.The invention has for its object to provide a bulk material cooler, especially for hot cement clinker, the delivery capacity, the service life and the efficiency of the radiator increases and the wear problems are reduced.

Diese Aufgabe wird gemäß der Erfindung mit einem Schüttgutkühler mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.This object is achieved according to the invention with a bulk material cooler with the features of claim 1. Advantageous developments of the invention are specified in the subclaims.

Beim erfindungsgemäßen Schüttgutkühler ist der das heiße Kühlgut tragende Kühlrost aus mehreren sich in Kühlerlängsrichtung erstreckenden nebeneinander angeordneten länglichen Bodenelementen zusammengesetzt, die wenigstens teilweise unabhängig voneinander zwischen einer Vorhubposition in Kühlguttransportrichtung und einer Rückhubposition gesteuert bewegbar sind, so dass das Kühlgut schrittweise nach dem Walking Floor-Förderprinzip durch den Kühler gefördert wird. Dabei ist der in dieser Weise zusammengesetzte Kühlrost für die Kühlluft durchlässig, die etwa im Querstrom von unten nach oben den Kühlrost sowie das darauf gelagerte Schüttgutbett durchströmt, d. h. die Bodenelemente dienen gleichzeitig als Schüttguttransport- und als Kühlrostbelüftungs-Elemente. Oberhalb des Kühlrostes im Schüttgutbett bewegte Schubelemente, die einem besonders hohen Verschleiß ausgesetzt wären und die das Schüttgutbett durchmischen würden, sind nicht vorhanden. Als Beispiel wird angegeben, dass die Bodenelemente bei ihrer Vorhubbewegung gemeinsam nach vorne bewegt werden, aber bei ihrer Rückhubbewegung nicht gemeinsam, sondern in wenigstens zwei Gruppen in wenigstens zwei zeitlich aufeinanderfolgenden Schritten nacheinander zurückbewegt werden, bei welchen jeweils nur ein Teil der Bodenelemente, z. B. jeweils nur jedes zweite Bodenelement gesehen über die Kühlerbreite zurückbewegt wird. Bei ihrer Rückhubbewegung werden die Bodenelemente unter dem ruhenden Schüttgutbett gesteuert so zurückgezogen, dass das Schüttgutbett in Ruhe verharrt und die Rückhubbewegung nicht mitmacht.In the bulk material cooler according to the invention, the cooling grate carrying the hot goods to be cooled is made up of a plurality of units extending in the longitudinal direction of the cooler arranged side by side elongated floor elements composed at least partially independently of each other between a Vorhubposition in Kühlguttransportrichtung and a Rückhubposition are movable so that the goods to be cooled is gradually promoted by the cooler according to the Walking Floor conveying principle. In this case, the composite in this way cooling grate for the cooling air is permeable, which flows through the cooling grid and the bulk material bed mounted about in cross-flow from bottom to top, ie the bottom elements serve both as bulk material and as Kühlrostbelüftungs elements. Above the cooling grate moving in the bulk bed moving elements that would be exposed to a particularly high wear and would mix the bed of bulk material are not present. As an example, it is stated that the floor elements are moved together in their Vorhubbewegung forward, but not moved together in their return stroke together, but in at least two groups in at least two successive steps in succession, in which only a portion of the floor elements, z. B. only every second bottom element seen is moved back across the radiator width. In their return stroke, the floor elements are controlled under the dormant bed of bulk material withdrawn so that the bed of bulk material remains at rest and does not join the Rückhubbewegung.

Die gesteuert bewegbaren einzelnen Bodenelemente des erfindungsgemäßen Schüttgutkühlers sind nach Art eines länglichen Hohlkörperprofils ausgebildet und sie weisen im Querschnitt gesehen eine das Kühlgut tragende und für das Kühlgas von unten nach oben durchlässige Oberseite und eine davon beabstandete geschlossene den Kühlgut-Rostdurchfall verhindernde Unterseite auf. Dabei weist die Unterseite aller Bodenelemente mehrere über die Länge verteilte Kühlgas-Eintrittsöffnungen zur Belüftung der Bodenelemente und damit des Kühlrostes auf. Der Antrieb der Bodenelemente zu deren Bewegung zwischen ihrer Vorhubposition und ihrer Rückhubposition erfolgt von unterhalb des Kühlrostes.The controlled movable individual bottom elements of the bulk material cooler according to the invention are designed in the manner of an elongated hollow body profile and they have seen in cross-section carrying the refrigerated goods and for the cooling gas from bottom to top permeable top and a spaced therefrom the Kühlgut-Rostdurchfall preventing underside. In this case, the underside of all floor elements a plurality of distributed over the length of cooling gas inlet openings for ventilation of the floor elements and with the cooling grate on. The drive of the floor elements to their movement between their Vorhubposition and their Rückhubposition takes place from below the cooling grate.

Damit die Oberseite der Bodenelemente für das Kühlgas durchlässig ist, können die das Kühlgut tragenden Bodenelement-Oberseiten mit irgendwelchen Perforationen versehen sein. Nach einem besonderen Merkmal der Erfindung können die Oberseiten der individuell einzeln und/oder in Gruppen längsbewegbaren Bodenelemente jeweils aus sich mit Abstand spiegelbildlich gegenüberliegenden, aber versetzt zueinander angeordneten satteldachförmigen V-Profilen bestehen, deren V-Schenkel mit Zwischenraum ineinander greifen, welch letzterer ein Labyrinth für das Kühlgut sowie für die Kühlluft bildet, das heißt, das auf diese Weise gebildete Labyrinth ist für die Kühlluft durchlässig, verhindert aber gleichzeitig den Kühlgut-Rostdurchfall nach unten.So that the upper side of the floor elements is permeable to the cooling gas, the floor element upper sides bearing the refrigerated goods can be provided with any perforations. According to a particular feature of the invention, the tops of the individually individually and / or longitudinally movable in groups floor elements each consist of spaced apart mirror image opposite, but offset from each other arranged gable V-profiles whose V-legs interlock with space inside each other, which latter a labyrinth forms for the refrigerated goods as well as for the cooling air, that is, the labyrinth formed in this way is permeable to the cooling air, but at the same time prevents the refrigerated goods Rostdurchfall down.

Zur Minderung des Verschleißes zwischen der Oberfläche der das Kühlgut tragenden Oberseiten der Bodenelemente können auf diesen Oberseiten quer zur Kühlguttransportrichtung liegende Stege zum Festhalten der untersten Schüttgutschicht und zur Vermeidung einer Relativbewegung dieser untersten Schicht und dem Bodenelement angeordnet sein, das heißt im Betrieb des erfindungsgemäßen Schüttgutkühlers findet eine Relativbewegung nur zwischen der festgehaltenen untersten Schüttgutschicht und dem darüber befindlichen Schüttgutbettmaterial statt.In order to reduce the wear between the surface of the top of the floor elements carrying the refrigerated goods can be arranged on these tops transverse to Kühlguttransportrichtung webs for holding the lowermost bulk material layer and to avoid a relative movement of this lowermost layer and the bottom element, that is, in operation of the bulk material cooler according to the invention a relative movement only between the held lowermost bulk material layer and the bulk material bed material located above.

Nach einem weiteren Merkmal der Erfindung können an den sich gegenüberliegenden Längsseiten der benachbarten gesteuert bewegbaren Bodenelemente sich jeweils überlappende Längsstege mit Ausbildung jeweils eines horizontalen gegen Null gehenden Dichtungsspaltes angeordnet sein, wodurch der Durchtritt von Kühlluft im Bereich zwischen benachbarten Bodenelementen verhindert wird. Diese Horizontaldichtung arbeitet ohne Spülluft und sie kann mit Unterstützung durch eine Federkraft, welche den horizontalen Dichtungsspalt immer gegen Null bringt, selbstnachstellend ausgebildet sein.According to a further feature of the invention may be arranged on the opposite longitudinal sides of the adjacent controlled movable floor elements each overlapping longitudinal webs each forming a horizontal sealing gap going towards zero, whereby the passage of cooling air in the area between adjacent floor elements is prevented. This horizontal seal works without scavenging air and it can be self-adjusting with the assistance of a spring force which always brings the horizontal sealing gap to zero.

Mit Vorteil ist der Kühlrost des erfindungsgemäßen Schüttgutkühlers über die Länge und über die Breite des Kühlers gesehen aus mehreren Bodenelement-Modulen zusammengesetzt, wobei die in Kühlguttransportrichtung hintereinander angeordneten Bodenelement-Module derart gekoppelt sind, dass die Koppelelemente der hintereinander liegenden Bodenelement-Module jeweils einer Reihe insbesondere nur auf Zug beansprucht sind.Advantageously, the cooling grid of the bulk material cooler according to the invention over the length and across the width of the radiator is composed of several floor element modules, wherein the Kühlguttransportrichtung successively arranged floor element modules are coupled such that the coupling elements of the successive floor element modules each one row in particular are claimed only on train.

Beim erfindungsgemäßen Rostkühler ist der Fördermechanismus zum Transport des Kühlgutes völlig unabhängig von der Belüftung des Kühlrostes. Die Bewegung der Bodenelemente einzeln oder in Gruppen kann auch dazu herangezogen werden, das Schüttgut wie z. B. den heißen Zementklinker auf dem Kühlrost gezielt zu verteilen.In the grate cooler according to the invention, the conveying mechanism for transporting the goods to be cooled is completely independent of the ventilation of the cooling grate. The movement of the floor elements individually or in groups can also be used to the bulk material such. B. to distribute the hot cement clinker on the cooling grid targeted.

Die Erfindung und deren weitere Merkmale und Vorteile werden anhand der in den Figuren schematisch dargestellten Ausführungsbeispiele näher erläutert.The invention and its further features and advantages will be explained in more detail with reference to the embodiments schematically illustrated in the figures.

Es zeigt:

Fig. 1:
in perspektivischer Ansicht ein Bodenelement-Modul, wobei aus einer Vielzahl solcher hintereinander und nebeneinander angeordneter Module der Kühlrost des erfindungsgemäßen Schüttgutkühlers zusammengesetzt ist,
Fig. 2:
einen Querschnitt durch das Modul der Fig. 1 quer zu dessen Bewegungsrichtung, und
Fig. 3:
vergrößert herausgezeichnet die Einzelheit III der Fig. 2.
It shows:
Fig. 1:
a bottom element module in a perspective view, wherein the cooling grid of the bulk material cooler according to the invention is composed of a multiplicity of such modules arranged one behind the other and next to one another,
Fig. 2:
a cross-section through the module of Fig. 1 transversely to its direction of movement, and
3:
magnified drawn out the detail III of FIG. 2.

Erläutert am Modul der Figur 1 ist der Kühlrost des erfindungsgemä-ßen Schüttgutkühlers aus mehreren, pro Modul z. B. aus drei sich in Kühlerlängsrichtung erstreckenden nebeneinander angeordneten länglichen etwa trogförmigen Bodenelementen 10, 11, 12 zusammengesetzt, die unabhängig voneinander zwischen einer Vorhubposition 13 in Kühlguttransportrichtung und einer Rückhubposition 14 gesteuert bewegbar sind, so dass das auf den Bodenelementen gelagerte und in Figur 2 angedeutete Kühlgut 15 schrittweise nach dem Walking Floor-Förderprinzip durch den Kühler gefördert wird. Wie in Figur 1 beim Bodenelement 12 angezeigt, erfolgt der Antrieb der einzelnen Bodenelemente 10, 11, 12 der Bodenelement-Module von unterhalb des Kühlrostes über Schubrahmen, die auf Laufrollen abgestützt sind und an denen Arbeitszylinder angreifen.Explained on the module of Figure 1, the cooling grid of the inventive Shen bulk material cooler of several, per module z. B. from three extending in the longitudinal direction of the radiator juxtaposed elongated approximately trough-shaped bottom elements 10, 11, 12 composed independently of each other between a Vorhubposition 13 in Kühlguttransportrichtung and a Rückhubposition 14 are movable, so that the mounted on the floor elements and indicated in Figure 2 Refrigerated 15 is gradually promoted by the cooler on the walking floor conveying principle. As indicated in the bottom element 12 in FIG. 1, the drive of the individual floor elements 10, 11, 12 of the floor element modules takes place from below the cooling grate via push frames, which are supported on rollers and on which working cylinders engage.

Die Bodenelemente 10, 11, 12 aller Module sind als Hohlkörper ausgebildet, nämlich sie weisen im Querschnitt gesehen eine das Kühlgut 15 tragende und für die Kühlluft 16 von unten nach oben durchlässige Oberseite und eine davon beabstandete geschlossene den Kühlgut-Rostdurchfall verhindernde Unterseite 17 auf. Dabei weisen die Unterseiten 17 aller Bodenelemente mehrere über die Länge verteilte Kühlluft-Eintrittsöffnungen 18 zum Eintritt der Kühlluft 16 zur Belüftung der Bodenelemente und Kühlung des darauf gelagerten Schüttgutes auf. Die Oberseiten der Bodenelemente können mit irgendwelchen für die Kühlluft 16 durchlässigen Perforationen versehen sein. Wie im Ausführungsbeispiel der Figur 2 zu erkennen, können mit besonderem Vorteil die Oberseiten der längsbewegbaren Bodenelemente 10, 11, 12 jeweils aus sich mit Abstand spiegelbildlich gegenüberliegenden, aber versetzt zueinander angeordneten satteldachförmigen V-Profilen 19, 20 bestehen, deren V-Schenkel mit Zwischenraum ineinander greifen, welch letzter ein Labyrinth für das Kühlgut 15 sowie für die Kühlluft 16 bildet. Dadurch ist gewährleistet, dass der erfindungsgemäße Schüttgutkühler gegen Rostdurchfall gesichert ist.The bottom elements 10, 11, 12 of all modules are formed as a hollow body, namely they have in cross section a the goods to be refrigerated 15 and the cooling air 16 from bottom to top permeable top and a spaced therefrom the Kühlgut-Rostdurchfall preventing underside 17. In this case, the lower sides 17 of all floor elements on a plurality of distributed over the length cooling air inlet openings 18 for the entry of the cooling air 16 for ventilation of the floor elements and cooling of the stored bulk material thereon. The tops of the floor elements may be provided with any perforations permeable to the cooling air 16. As can be seen in the embodiment of Figure 2, with particular advantage, the tops of the longitudinally movable floor elements 10, 11, 12 each consist of spaced apart mirror image opposite, but offset from each other arranged saddle roof-shaped V-profiles 19, 20, the V-leg with space interlock, which last forms a labyrinth for the refrigerated goods 15 and for the cooling air 16. This ensures that the bulk material cooler according to the invention is secured against rust rusting.

Auf der Oberseite der Bodenelemente 10 bis 12 sind mit Vorteil quer zur Kühlguttransportrichtung liegende Stege 21a, 21b, 21c zum Festhalten der untersten Schüttgutschicht und zur Vermeidung einer Relativbewegung dieser untersten Schicht und dem jeweiligen Bodenelement angeordnet, was zum Verschleißschutz dieser Bodenelemente beiträgt.On the upper side of the floor elements 10 to 12, webs 21a, 21b, 21c lying perpendicular to the refrigerated goods transport direction are advantageously arranged for holding the lowermost bulk material layer and avoiding relative movement of this lowermost layer and the respective floor element, which contributes to the wear protection of these floor elements.

Die Detailzeichnung der Figur 3 zeigt, dass zur Abdichtung des Zwischenraumes zwischen den benachbarten gesteuert bewegbaren Bodenelementen an den sich gegenüberliegenden Längsseiten der benachbarten Bodenelemente sich jeweils überlappende Längsstege, nämlich oberer Längssteg 22 und unterer Längssteg 23 mit Ausbildung jeweils eines horizontalen gegen Null gehenden Dichtungsspaltes angeordnet sind. Diese Horizontaldichtung arbeitet ohne Spülluft und sie kann durch Einsatz einer Federkraft selbstnachstellend ausgebildet sein.The detailed drawing of Figure 3 shows that for sealing the gap between the adjacent controlled movable floor elements on the opposite longitudinal sides of the adjacent floor elements each overlapping longitudinal webs, namely upper longitudinal ridge 22 and lower longitudinal ridge 23 are arranged with formation of a horizontal sealing gap going to zero , This horizontal seal works without scavenging air and it can be self-adjusting formed by using a spring force.

Claims (6)

  1. A bulk material cooler having a cooling grate which carries the material to be cooled, such as hot cement clinker for example, and transports the material to be cooled, through which a cooling gas flows, from the charging end for the material to be cooled to the discharging end for the material to be cooled,
    characterized by the following features:
    a) the cooling grate is made up of a number of adjacently arranged elongate bottom elements (10 to 12) which extend in the longitudinal direction of the cooler, are movable in a controlled manner at least partly independently of one another between a forward-travel position (13) in the transporting direction of the material to be cooled and a return-travel position (14), so that the material to be cooled (15) is conveyed through the cooler step by step in accordance with the walking floor conveying principle;
    b) the bottom elements (10 to 12) have, seen in cross section, an upper side which carries the material to be cooled and allows the cooling gas (16) to pass through from underneath upward, and, at a distance from said upper side, a closed underside (17) preventing material to be cooled from falling through the grate;
    c) the underside (17) of the bottom elements has a number of cooling-gas inlet openings (18), distributed over the length, to aerate the bottom elements and consequently the cooling grate.
  2. The bulk material cooler as claimed in claim 1, characterized in that the upper sides of the bottom elements (10 to 12) that are longitudinally movable individually and/or in groups in each case comprise gabled-roof-shaped V profiles (19, 20) arranged spaced apart mirror-symmetrically opposite one another, but offset in relation to one another, the V legs of which engage in one another with an intermediate space, which latter forms a labyrinth for the material to be cooled and for the cooling air (16).
  3. The bulk material cooler as claimed in claim 1 or 2, characterized in that webs (21a to 21c) lying transversely in relation to the transporting direction of the material to be cooled are arranged on the upper side of the bottom elements (10 to 12) to fix the lowermost layer of bulk material (15) and to avoid relative movement of this lowermost layer and the bottom element.
  4. The bulk material cooler as claimed in claim 1, characterized in that respectively overlapping longitudinal webs (22, 23) are arranged on the opposite longitudinal sides of the adjacent bottom elements that are movable in a controlled manner, with a horizontal sealing gap tending toward zero being formed in each case.
  5. The bulk material cooler as claimed in claim 1, characterized in that, seen over the length and over the width of the bulk material cooler, the cooling grate is made up of a number of bottom element modules, the bottom element modules respectively of a row that are arranged one behind the other in the transporting direction of the material to be cooled being coupled.
  6. The bulk material cooler as claimed in claim 1 or 5, characterized in that the driving of the individual bottom elements of the bottom element modules, to move them between the forward-travel position (13) and the return-travel position (14), takes place from underneath the cooling grate, the driving taking place in such a way that the connecting elements of the bottom element modules lying one behind the other respectively of a row being subjected in particular only to tensile stress.
EP04819217A 2003-11-28 2004-11-25 Bulk material cooler for cooling hot materials to be cooled Revoked EP1695015B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL04819217T PL1695015T3 (en) 2003-11-28 2004-11-25 Bulk material cooler for cooling hot materials to be cooled
SI200430362T SI1695015T1 (en) 2003-11-28 2004-11-25 Bulk material cooler for cooling hot materials to be cooled

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10355822A DE10355822B4 (en) 2003-11-28 2003-11-28 Bulk cooler for cooling hot chilled goods
PCT/EP2004/013367 WO2005052482A1 (en) 2003-11-28 2004-11-25 Bulk material cooler for cooling hot materials to be cooled

Publications (2)

Publication Number Publication Date
EP1695015A1 EP1695015A1 (en) 2006-08-30
EP1695015B1 true EP1695015B1 (en) 2007-04-18

Family

ID=34625385

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EP04819217A Revoked EP1695015B1 (en) 2003-11-28 2004-11-25 Bulk material cooler for cooling hot materials to be cooled

Country Status (16)

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US (1) US7484957B2 (en)
EP (1) EP1695015B1 (en)
JP (1) JP5133565B2 (en)
CN (1) CN100465566C (en)
AT (1) ATE360181T1 (en)
BR (1) BRPI0417019A (en)
CA (1) CA2546587C (en)
CY (1) CY1106725T1 (en)
DE (2) DE10355822B4 (en)
DK (1) DK1695015T3 (en)
ES (1) ES2285571T3 (en)
NO (1) NO20062989L (en)
PL (1) PL1695015T3 (en)
PT (1) PT1695015E (en)
RU (1) RU2352884C2 (en)
WO (1) WO2005052482A1 (en)

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RU2352884C2 (en) 2009-04-20
CA2546587A1 (en) 2005-06-09
ES2285571T3 (en) 2007-11-16
ATE360181T1 (en) 2007-05-15
BRPI0417019A (en) 2007-03-13
CN1902452A (en) 2007-01-24
PT1695015E (en) 2007-07-04
US20070128565A1 (en) 2007-06-07
PL1695015T3 (en) 2007-09-28
JP5133565B2 (en) 2013-01-30
DK1695015T3 (en) 2007-09-17
DE10355822A1 (en) 2005-07-28
US7484957B2 (en) 2009-02-03
WO2005052482A1 (en) 2005-06-09
CN100465566C (en) 2009-03-04
CY1106725T1 (en) 2012-01-25
DE502004003574D1 (en) 2007-05-31
RU2006122936A (en) 2008-01-10
NO20062989L (en) 2006-06-27
EP1695015A1 (en) 2006-08-30
CA2546587C (en) 2013-01-08
JP2007515365A (en) 2007-06-14
DE10355822B4 (en) 2013-06-13

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