EP0378821A2 - Pusher grate installation for the heat treatment of bulk material - Google Patents

Pusher grate installation for the heat treatment of bulk material Download PDF

Info

Publication number
EP0378821A2
EP0378821A2 EP89123308A EP89123308A EP0378821A2 EP 0378821 A2 EP0378821 A2 EP 0378821A2 EP 89123308 A EP89123308 A EP 89123308A EP 89123308 A EP89123308 A EP 89123308A EP 0378821 A2 EP0378821 A2 EP 0378821A2
Authority
EP
European Patent Office
Prior art keywords
grate
tension elements
heat treatment
sliding
bulk material
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.)
Granted
Application number
EP89123308A
Other languages
German (de)
French (fr)
Other versions
EP0378821B1 (en
EP0378821A3 (en
Inventor
Karl Von Wedel
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.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT89123308T priority Critical patent/ATE88264T1/en
Publication of EP0378821A2 publication Critical patent/EP0378821A2/en
Publication of EP0378821A3 publication Critical patent/EP0378821A3/en
Application granted granted Critical
Publication of EP0378821B1 publication Critical patent/EP0378821B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H3/00—Grates with hollow bars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
    • 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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • 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
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0001—Positioning the charge
    • F27D2003/0002—Positioning the charge involving positioning devices, e.g. buffers, buffer zones
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0038—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising shakers
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0042—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising roller trains
    • 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
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0073—Seals

Definitions

  • the invention relates to a sliding grate device for the heat treatment of unspecific fine-grained bulk goods, comprising an upper and a lower housing, which is under the pressure of the cooling medium, a plurality of grate rows which are at least partially movable transversely to a predetermined conveying direction of the bulk goods and which overlap one another in a scale-like manner Structure made of side members and cross members for the movably arranged grate rows and elongated tension elements for hanging the structure, and deals in general with the lateral guidance of such sliding grates and above all their improvement.
  • the supporting structure is mounted either on rollers and axes or on axes of rotation with races for receiving the conveying movement. Due to the resulting wear problems described below, a grate of the type described above was used, in which the structure is suspended from long tension elements parallel to the vertical grate longitudinal plane. Although the wear problem of the rollers or races could be eliminated, this solution was abandoned due to problems in the lateral guidance of the structure.
  • sliding gratings In general, the structure of such sliding gratings consists of longitudinal members, which together through the movable grate rows themselves and through further struts to a Ge velvet frames are stiffened. In order to convey the bulk material, it carries out so-called thrusts, from which the term “sliding grate" originates. These are 3 to 30 batches per minute, usually 70 to 150 mm in length, coordinated with the length of the overlap of the grate plates of the successive grate rows. The thrusts are generated by mechanical cranks or hydraulic cylinders and directed onto the frame.
  • Either the side of the frame is guided by wheel flanges on the rollers that roll on permanently installed rail pieces, or vice versa by rail pieces on the side members that run back and forth on wheels with wheel flanges.
  • the crossbeams receive steel plates on their underside when they are suspended from long traction elements, which rub on fixed counter plates.
  • the quality of a sliding grate lies in its resistance to the gas permeability in order to achieve a uniform gas flow in the bulk material to be treated (see K. von Wedel and R. Wagner "Are cooling gratings clinker coolers or heat recuperators?”, Cement-lime gypsum , 37th year, No. 5/1984, pp. 244-247).
  • This resistance can be achieved by appropriately fine and evenly distributed openings in the grate floor.
  • a grate to be referred to as a resistance grate has become known (EP-A-0 167 658), in which box-like grate plates and hollow supports are provided as grate supports as essential components.
  • box-like grate plates and hollow supports are provided as grate supports as essential components.
  • they have no significant influence marginal gaps to be avoided between fixed side plates and the grate plates of movable grate rows, as of course wear can also affect the procedural behavior of such a resistance grate as well as other types of slide
  • Slatted frames generally suffer from marginal mobility for both the gas and the goods.
  • cooling grates for cement clinker the passage of the cooling air to the edges leads to wear on the side masonry due to sandblasting effects.
  • the limitation of the service life of the sliding grates due to wear is often due to the marginal gaps, especially if, after wear of the wheel flanges of the rollers or the steel friction plates, the positive side guidance on one side of the grate changes to a frictional connection between the fixed side board and the movable grate plate. This frictional engagement is one-sided because of uneven introduction of the drawers into the frame or uneven counter-forces from the bulk material. To the extent that the abrasive material pair wears out, the opposite side becomes more accessible.
  • the oscillating frame is driven by a hydraulic cylinder on each side of the grate, the uneven application of force can be so great without complicated control devices for distributing the force to the cylinders that only one of the two cylinders does the pushing work while the other cylinder runs without pressure. Since only the one with the lower counterforce does the work with free distribution of the oil flow to the two cylinders, the friction from the side guide must be applied via the frame by the opposite cylinder force. Because of the limited rigidity of the frame, particularly large forces act on one side on the side guide of the grate.
  • the invention has for its object to form the edge gaps of sliding grates so tight that they meet the quality requirements for a resistance grate.
  • the invention aims to ensure by the formation of sliding grates that the procedural behavior can not deteriorate due to wear, in the knowledge that this does not depend on changing marginal gaps and incidentally also on the shear gaps and therefore a wear-prone solution is not permitted.
  • this object is achieved in a sliding grate of the type described in the introduction by tension elements which form an angle of attack of more than 3 degrees against the vertical grate longitudinal plane.
  • tension elements which form an angle of attack of more than 3 degrees against the vertical grate longitudinal plane.
  • the own weight of the grate results in horizontal tensile forces according to the parallelogram of the forces in the cross member, which cancel each other out in the central position of rest. If there is a deviation from the central position, an unequal pair of forces arises, the resulting force of which, as a centering force, counteracts disturbing forces from the thrust movement directed sideways.
  • the inclined traction elements can be designed as firmly clamped leaf springs arranged transversely to the conveying direction. While the leaf springs deform slightly in the direction of thrust, in the transverse direction they form a rigid system together with the cross beams. The forces from this stiffness add up to the transverse forces from the inclined position of the tension elements, which means that the swing frame is also guided in the center. The forces for the lateral guidance are so large overall that a one-way hydraulic drive would be permissible - as described above.
  • the tension elements can be arranged in oblique, gas-tight protuberances of the lower housing.
  • the lower housing takes on an unusual shape with these protuberances.
  • the protuberances according to a further embodiment of the invention as channels for the supply of the cooling medium to the lower housing, at least some of the usual fans for the cooling medium can advantageously be set up on the furnace platform, which is usually located above the sliding grate.
  • the advantage in terms of the task is then that the tension elements are arranged in the inflow of the cooling medium. As a result, temperature influences caused by the hot bulk material and changes in length of the tension elements caused thereby can be excluded in a particularly favorable manner.
  • the working and usable space is determined by a housing, the upper housing being formed by grate plates 12 and masonry 10, while the lower housing extends between side walls with supports 11 to the grate plates 12 .
  • the structure for movable grate beams 1 of the sliding grate comprises longitudinal beams 2 and running axles 6 with rollers 5 fastened thereon, which have wheel flanges and represent the lateral guide.
  • Fig. 4 shows the detail IV of FIGS. 1 to 3, namely the masonry 10, a fixed side board 13 and a movable grate plate 12, which forms a thrust gap 15 and an edge gap 14 with the fixed side board 13.
  • the gaps 14, 15 are dimensioned so that they accommodate the dimensional tolerances, thermal expansion and wear paths.
  • the gap widths in this arrangement of the prior art are therefore 6 mm for the shear gap 15 and 20 mm for the edge gap 14.
  • FIG. 2 shows a sliding grate, the side members 2 of which rest on cross members 3 which are suspended from long traction elements 4.
  • the upper fastenings of the tension elements 4 are not shown.
  • the side guidance is done by friction plates 7. Additional Lich, tension chains 8 can be stretched diagonally between the supports 11 and the cross members 3.
  • the sliding grate of FIG. 3 designed according to the invention has tension elements 4 set at an angle ⁇ of (here) 15 degrees.
  • the angle ⁇ can vary between 3 and 45 degrees.
  • the tensile forces arising in the cross member 3 take over the function of the friction plates 7 or pull chains 8.
  • the tension elements 4 are firmly clamped leaf springs which are advantageously arranged in a package and which deform as a result of the pushing movement, both the pushing gap 15 and the edge gap 14 are independent of wear .
  • the thrust gap 15 and the edge gap 14 are, for example, only 2 mm each in this construction and maintain this quality without the influence of wearing components of the movable supporting structure.
  • the edge and shear gaps thus have the same order of magnitude as the air openings in the area of the grate plates 12 when the grate is constructed as a resistance grate according to EP-A-0 167 658.
  • Fig. 3 also shows protuberances 16 of the lower housing, in which the tension elements 4 are arranged, and the connection of these protuberances to an air supply line 17. As a result, the tension elements 4 are in the cold air flow. This also eliminates changes in length of the tension elements, which could occur due to thermal expansion at different temperatures of the masonry 10 or due to heat build-up from the lower housing.

Abstract

The heat treatment of solids by combustion, cooling, or the like with the aid of gas may take place on a grate conveying such solids while the gas is passed through openings in the surface of the grate. In order to provide lateral clearances of such grates with the same order of narrowness as the majority of the grate's openings, the mobile framework of the grate is suspended by tension elements inclined at an angle of at least 3 degrees relative to the perpendicular. If the mobile frame deviates from a straight course, the inclined suspension creates a centering force guiding the mobile frame without mechanical contact and wear. As a result, the lateral clearances for thermal expansion and building tolerances are reduced from about 20 to 2 mm.

Description

Gebiet der ErfindungField of the Invention

Die Erfindung betrifft eine Schubrost-Einrichtung zur Wärmebehandlung von unsbesondere feinkörnigen Schüttgü­tern, umfassend ein oberes und ein unteres, unter dem Druck des Kühlmediums stehendes Gehäuse, eine Mehrzahl von quer zu einer vorbestimmten Förderrichtung des Schüttguts mindestens teilweise beweglich sowie einander schuppenartig überlappend angeordneten Rostreihen, ein Tragwerk aus Längsträgern und Querträgern für die beweg­lich angeordneten Rostreihen sowie langgestreckte Zugele­mente zur Aufhängung des Tragwerks, und befaßt sich in allgemeiner Weise mit der Seitenführung solcher Schubro­ste sowie vor allem deren Verbesserung.The invention relates to a sliding grate device for the heat treatment of unspecific fine-grained bulk goods, comprising an upper and a lower housing, which is under the pressure of the cooling medium, a plurality of grate rows which are at least partially movable transversely to a predetermined conveying direction of the bulk goods and which overlap one another in a scale-like manner Structure made of side members and cross members for the movably arranged grate rows and elongated tension elements for hanging the structure, and deals in general with the lateral guidance of such sliding grates and above all their improvement.

Stand der TechnikState of the art

Bei in der Praxis üblichen Schubrosten ist das Tragwerk entweder auf Laufrollen und Laufachsen oder auf Drehach­sen mit Laufringen zur Aufnahme der Förderbewegung gela­gert. Aufgrund der sich dabei ergebenden, weiter unten beschriebenen Verschleißprobleme wurde ein Rost der ein gangs beschriebenen Art zum Einsatz gebracht, bei dem das Tragwerk an langen, zur senkrechten Rostlängsebene parallelen Zugelementen aufgehängt ist. Obwohl damit das Verschleißproblem der Laufrollen bzw. Laufringe besei­tigt werden konnte, wurde diese Lösung unter anderem wegen Problemen in der Seitenführung des Tragwerks wieder verlassen.In the case of sliding gratings which are customary in practice, the supporting structure is mounted either on rollers and axes or on axes of rotation with races for receiving the conveying movement. Due to the resulting wear problems described below, a grate of the type described above was used, in which the structure is suspended from long tension elements parallel to the vertical grate longitudinal plane. Although the wear problem of the rollers or races could be eliminated, this solution was abandoned due to problems in the lateral guidance of the structure.

Allgemein besteht das Tragwerk solcher Schubroste aus Längsträgern, die miteinander durch die beweglichen Rost­reihen selbst sowie durch weitere Streben zu einem Ge­ samtrahmen versteift sind. Zur Förderung des Schüttgutes führt dieser sogenannte Schübe aus, von denen der Be­griff "Schubrost" herrührt. Es handelt sich um 3 bis 30 Schübe in der Minute von meist 70 bis 150 mm Länge abge­stimmt auf die Länge der Überlappung der Rostplatten der aufeinanderfolgenden Rostreihen. Die Schübe werden durch mechanische Kurbeln oder hydraulische Zylinder erzeugt und auf den Rahmen geleitet.In general, the structure of such sliding gratings consists of longitudinal members, which together through the movable grate rows themselves and through further struts to a Ge velvet frames are stiffened. In order to convey the bulk material, it carries out so-called thrusts, from which the term "sliding grate" originates. These are 3 to 30 batches per minute, usually 70 to 150 mm in length, coordinated with the length of the overlap of the grate plates of the successive grate rows. The thrusts are generated by mechanical cranks or hydraulic cylinders and directed onto the frame.

Entweder erfolgt die Seitenführung des Rahmens durch Spurkränze an den Laufrollen, die auf fest verlegten Schienenstücken abrollen, bzw. umgekehrt durch Schienen­stücke an den Längsträgern, die auf mit Spurkränzen ver­sehenen Rollen vor- und zurücklaufen. Oder die Querträ­ger erhalten bei ihrer Aufhängung an langen Zugelementen an ihrer Unterseite Platten aus Stahl, die auf fest ange­ordneten Gegenplatten reiben.Either the side of the frame is guided by wheel flanges on the rollers that roll on permanently installed rail pieces, or vice versa by rail pieces on the side members that run back and forth on wheels with wheel flanges. Or the crossbeams receive steel plates on their underside when they are suspended from long traction elements, which rub on fixed counter plates.

Diese auf dem Prinzip des Formschlusses beruhenden Lösun­gen zur Seitenführung der Schubroste mittels Spurkränzen bzw. Reibplatten sind verschleißbehaftet und erfordern eine Vorgabe dieses Verschleißweges in den Randspalten der beweglichen Rostreihen. Diese Vorgaben addieren sich zu den Vorgaben für die Wärmedehnung der Rostträger und führen zu entsprechend weiten, offenen Randspalten.These solutions based on the principle of positive locking for the lateral guidance of the sliding grids by means of wheel flanges or friction plates are subject to wear and require a specification of this wear path in the edge gaps of the movable grate rows. These specifications add up to the specifications for the thermal expansion of the grate girders and lead to correspondingly wide, open marginal gaps.

Nach dem Stand der Technik liegt die Güte eines Schubro­stes in seinem Widerstand gegen die Durchgasbarkeit zur Erzielung einer gleichmäßigen Durchgasung im zu behan­delnden Schüttgut (s. K. von Wedel und R. Wagner "Sind Kühlroste Klinkerkühler oder Wärmerekuperatoren?", Zement-Kalk-Gips, 37. Jahrgang, Nr. 5/1984, S. 244-247). Dieser Widerstand kann durch entsprechend feine und gleichmäßig verteilte Öffnungen in dem Rostboden erzielt werden. Zu diesem Zweck ist ein als Widerstandsrost zu bezeichnender Rost bekannt geworden (EP-A-0 167 658), bei dem als wesentliche Bauelemente kastenartige Rost­platten sowie Hohltrager als Rostträger vorgesehen sind. Einen erheblichen Einfluß haben dabei jedoch die nicht zu vermeidenden Randspalte zwischen festen Seitenbordplat­ten und den Rostplatten beweglicher Rostreihen, wie na­türlich auch der Verschleiß das verfahrenstechnische Ver­halten eines solchen Widerstandsrostes wie auch von Schubrosten anderer Bauart beeinträchtigen kann.According to the prior art, the quality of a sliding grate lies in its resistance to the gas permeability in order to achieve a uniform gas flow in the bulk material to be treated (see K. von Wedel and R. Wagner "Are cooling gratings clinker coolers or heat recuperators?", Cement-lime gypsum , 37th year, No. 5/1984, pp. 244-247). This resistance can be achieved by appropriately fine and evenly distributed openings in the grate floor. For this purpose, a grate to be referred to as a resistance grate has become known (EP-A-0 167 658), in which box-like grate plates and hollow supports are provided as grate supports as essential components. However, they have no significant influence marginal gaps to be avoided between fixed side plates and the grate plates of movable grate rows, as of course wear can also affect the procedural behavior of such a resistance grate as well as other types of slide grates.

Schubroste leiden allgemein unter einer Randgängigkeit sowohl für das Gas als auch für das Gut. Bei Kühlrosten für Zementklinker führt die Randgängigkeit der Kühlluft zu Verschleiß am seitlichen Mauerwerk durch Sandstrahlef­fekte. Die Begrenzung der Lebensdauer der Schubroste durch Verschleiß geht häufig von den Randspalten aus, be­sonders dann, wenn nach Verschleiß der Spurkränze der Laufrollen bzw. der Reibplatten aus Stahl die formschlüs­sige Seitenführung auf einer Seite des Rostes auf einen Reibschluß zwischen festem Seitenbord und beweglicher Rostplatte übergeht. Einseitig ist dieser Reibschluß wegen ungleichmäßiger Einleitung der Schübe in den Rahmen oder ungleichmäßiger Gegenkräfte aus dem Schütt­gut. In dem Maße, in dem die reibende Werkstoffpaarung verschleißt, wird die gegenüberliegende Seite randgängi­ger.Slatted frames generally suffer from marginal mobility for both the gas and the goods. In the case of cooling grates for cement clinker, the passage of the cooling air to the edges leads to wear on the side masonry due to sandblasting effects. The limitation of the service life of the sliding grates due to wear is often due to the marginal gaps, especially if, after wear of the wheel flanges of the rollers or the steel friction plates, the positive side guidance on one side of the grate changes to a frictional connection between the fixed side board and the movable grate plate. This frictional engagement is one-sided because of uneven introduction of the drawers into the frame or uneven counter-forces from the bulk material. To the extent that the abrasive material pair wears out, the opposite side becomes more accessible.

Wird der Schwingrahmen von je einem hydraulischen Zylin­der auf jeder Seite des Rostes angetrieben, kann die un­gleiche Krafteinleitung ohne komplizierte Regeleinrich­tungen zur Kraftverteilung auf die Zylinder so groß werden, daß nur einer der beiden Zylinder die Schubar­beit leistet, während der andere Zylinder ohne Druck mit­läuft. Da bei freier Verteilung des Ölstroms auf die beiden Zylinder nur jener mit den geringeren Gegenkräf­ten die Arbeit leistet, muß die Reibung aus der Seiten­führung über den Rahmen von der gegenüberliegenden Zylin­derkraft aufgebracht werden. Wegen der begrenzten Stei­figkeit des Rahmens wirken deshalb besonders große Kräfte einseitig auf die Seitenführung des Rostes.If the oscillating frame is driven by a hydraulic cylinder on each side of the grate, the uneven application of force can be so great without complicated control devices for distributing the force to the cylinders that only one of the two cylinders does the pushing work while the other cylinder runs without pressure. Since only the one with the lower counterforce does the work with free distribution of the oil flow to the two cylinders, the friction from the side guide must be applied via the frame by the opposite cylinder force. Because of the limited rigidity of the frame, particularly large forces act on one side on the side guide of the grate.

AufgabenstellungTask

Der Erfindung liegt die Aufgabe zugrunde, die Randspalte von Schubrosten so dicht auszubilden, daß sie den Gütean­forderungen an einen Widerstandsrost entsprechen. Außer­dem hat die Erfindung zum Ziel, durch die Ausbildung von Schubrosten sicherzustellen, daß sich das verfahrenstech­nische Verhalten nicht durch Verschleiß verschlechtern kann, und zwar in der Erkenntnis, daß dieses nicht unwe sentlich von sich verändernden Randspalten und nebenbei auch von den Schubspalten abhängt und deshalb eine ver­schleißbehaftete Lösung nicht zulässig ist.The invention has for its object to form the edge gaps of sliding grates so tight that they meet the quality requirements for a resistance grate. In addition, the invention aims to ensure by the formation of sliding grates that the procedural behavior can not deteriorate due to wear, in the knowledge that this does not depend on changing marginal gaps and incidentally also on the shear gaps and therefore a wear-prone solution is not permitted.

Lösung und VorteileSolution and advantages

Erfindungsgemäß wird diese Aufgabe bei einem Schubrost der eingangs beschriebenen Art durch Zugelemente gelöst, die gegen die senkrechte Rostlängsebene einen Anstellwin­kel von mehr als 3 Grad bilden. In Abhängigkeit von dem Anstellwinkel entstehen aus dem Eigengewicht des Rostes nach dem Parallelogramm der Kräfte in dem Querträger ho­rizontale Zugkräfte, die sich bei mittiger Ruhelage ge­genseitig aufheben. Bei Abweichung aus der Mittellage entsteht ein ungleiches Kräftepaar, dessen resultierende Kraft als Zentrierkraft seitwärts gerichteten Störkräf­ten aus der Schubbewegung entgegenwirkt. Je nach Anstell­winkel wirkt bereits bei geringen Auslenkungen aus der Mittellage eine so große Zentrierkraft auf den bewegli­chen Rost, daß er nur durch Kräfte und ohne reibenden Formschluß seitlich geführt wird. Dadurch wird es u.a. auch möglich, bei einem sogenannten Widerstandsrost (EP-A-0 167 658) die flachen Schubspalte oberhalb der be­weglichen Rostreihen zu den festen Rostreihen bzw. festen Seitenborden und die senkrechten Randspalte zwi­schen beweglichen Rostreihen und festen Seitenborden auf Dauer ebenfalls eng einzustellen und damit dessen Funk tion über die Zeit weiter zu verbessern.According to the invention, this object is achieved in a sliding grate of the type described in the introduction by tension elements which form an angle of attack of more than 3 degrees against the vertical grate longitudinal plane. Depending on the angle of attack, the own weight of the grate results in horizontal tensile forces according to the parallelogram of the forces in the cross member, which cancel each other out in the central position of rest. If there is a deviation from the central position, an unequal pair of forces arises, the resulting force of which, as a centering force, counteracts disturbing forces from the thrust movement directed sideways. Depending on the angle of attack, even with small deflections from the central position, such a large centering force acts on the movable grate that it is guided laterally only by forces and without a frictional positive fit. This also makes it possible, in the case of a so-called resistance grate (EP-A-0 167 658), to set the flat shear gaps above the movable grate rows to the fixed grate rows or fixed side rims and the vertical edge gaps between movable grate rows and fixed side rims also in the long run and thus further improve its function over time.

In vorteilhafter Weiterbildung der Erfindung können die schräg angestellten Zugelemente als fest eingespannte und quer zur Förderrichtung angeordnete Blattfedern aus­gebildet sein. Während sich die Blattfedern in Schubrich­tung leicht verformen, bilden sie in Querrichtung dazu zusammen mit den Querträgern ein formsteifes System. Die Kräfte aus dieser Formsteifigkeit addieren sich zu den Querkräften aus der Schrägstellung der Zugelemente, wo­durch der Schwingrahmen zusätzlich mittig geführt wird. Die Krafte zur Seitenführung sind insgesamt so groß, daß ein - wie oben beschrieben - einseitig wirkender Hydrau­likantrieb zulässig wäre.In an advantageous development of the invention, the inclined traction elements can be designed as firmly clamped leaf springs arranged transversely to the conveying direction. While the leaf springs deform slightly in the direction of thrust, in the transverse direction they form a rigid system together with the cross beams. The forces from this stiffness add up to the transverse forces from the inclined position of the tension elements, which means that the swing frame is also guided in the center. The forces for the lateral guidance are so large overall that a one-way hydraulic drive would be permissible - as described above.

Nach einer weiteren Ausbildung der Erfindung können die Zugelemente in schrägen, gasdicht ausgebildeten Ausstül­pungen des unteren Gehäuses angeordnet sein. Das untere Gehäuse nimmt mit diesen Ausstülpungen eine ungewöhnli­che Form an. Indem man die Ausstülpungen aber gemäß einer weiteren Ausbildungsform der Erfindung als Kanäle für die Zufuhr des Kühlmediums zum unteren Gehäuse aus­bildet, lassen sich zumindest einige der üblichen Venti­latoren für das Kühlmedium vorteilhaft auf der meist über dem Schubrost befindlichen Ofenbühne aufstellen. Der Vorteil im Sinne der Aufgabenstellung besteht dann darin, daß die Zugelemente im Zustrom des Kühlmediums an­geordnet sind. Dadurch können in besonders günstiger Weise Temperatureinflüsse durch das heiße Schüttgut und dadurch verursachte Längenänderungen der Zugelemente aus­geschlossen werden.According to a further embodiment of the invention, the tension elements can be arranged in oblique, gas-tight protuberances of the lower housing. The lower housing takes on an unusual shape with these protuberances. However, by forming the protuberances according to a further embodiment of the invention as channels for the supply of the cooling medium to the lower housing, at least some of the usual fans for the cooling medium can advantageously be set up on the furnace platform, which is usually located above the sliding grate. The advantage in terms of the task is then that the tension elements are arranged in the inflow of the cooling medium. As a result, temperature influences caused by the hot bulk material and changes in length of the tension elements caused thereby can be excluded in a particularly favorable manner.

Ausführungsbeispiele der ErfindungEmbodiments of the invention

Weitere Vorteile und Ausführungsformen oder -möglichkei­ten der Erfindung gehen aus der folgenden Beschreibung der in den schematischen und untereinander nicht maßstäb­lich getreuen Zeichnungen dargestellten Ausführungsbei­spiele hervor. Es zeigt

  • Fig. 1 einen Querschnitt durch einen Schubrost nach dem Stand der Technik,
  • Fig. 2 einen Querschnitt durch einen anderen Schubrost nach dem Stand der Technik,
  • Fig. 3 einen Querschnitt durch einen erfindungsge­mäßen Schubrost und
  • Fig. 4 im Detail gemäß IV der Fig. 1 bis 3 eine im Maßstab vergrößerte Darstellung der Spaltverhältnisse im Seitenwandbereich der Roste.
Further advantages and embodiments or possibilities of the invention emerge from the following description of the exemplary embodiments shown in the schematic drawings, which are not drawn to scale with respect to one another. It shows
  • 1 shows a cross section through a sliding grate according to the prior art,
  • 2 shows a cross section through another sliding grate according to the prior art,
  • Fig. 3 shows a cross section through a sliding grate according to the invention and
  • Fig. 4 in detail according to IV of FIGS. 1 to 3 is an enlarged representation of the gap ratios in the side wall region of the grids.

Bei dem in Fig. 1 dargestellten Schubrost bekannter Bauart ist der Arbeits- und Nutzraum durch ein Gehäuse bestimmt, wobei das obere Gehäuse durch Rostplatten 12 und Mauerwerk 10 gebildet wird, während sich das untere Gehäuse zwischen Seitenwänden mit Stützen 11 bis zu den Rostplatten 12 erstreckt. Das Tragwerk für bewegliche Rostträger 1 des Schubrostes umfaßt Längsträger 2 sowie Laufachsen 6 mit darauf befestigten Laufrollen 5, die Spurkränze aufweisen und die Seitenführung darstellen. Fig. 4 zeigt das Detail IV der Fig. 1 bis 3, nämlich das Mauerwerk 10, einen festen Seitenbord 13 und eine beweg­liche Rostplatte 12, die mit dem festen Seitenbord 13 einen Schubspalt 15 und einen Randspalt 14 bildet. Die Spalte 14, 15 sind so bemessen, daß sie die Maßtoleran­zen, Wärmedehnung und Verschleißwege aufnehmen. Die Spaltweiten betragen daher bei dieser Anordnung des Stan­des der Technik 6 mm für den Schubspalt 15 und 20 mm für den Randspalt 14.In the known type of grate shown in Fig. 1, the working and usable space is determined by a housing, the upper housing being formed by grate plates 12 and masonry 10, while the lower housing extends between side walls with supports 11 to the grate plates 12 . The structure for movable grate beams 1 of the sliding grate comprises longitudinal beams 2 and running axles 6 with rollers 5 fastened thereon, which have wheel flanges and represent the lateral guide. Fig. 4 shows the detail IV of FIGS. 1 to 3, namely the masonry 10, a fixed side board 13 and a movable grate plate 12, which forms a thrust gap 15 and an edge gap 14 with the fixed side board 13. The gaps 14, 15 are dimensioned so that they accommodate the dimensional tolerances, thermal expansion and wear paths. The gap widths in this arrangement of the prior art are therefore 6 mm for the shear gap 15 and 20 mm for the edge gap 14.

Demgegenüber stellt die bekannte Ausführung der Fig. 2 bereits eine Verbesserung dar. Sie zeigt einen Schub­rost, dessen Längsträger 2 auf Querträgern 3 ruhen, die an langen Zugelementen 4 aufgehängt sind. Die oberen Be­festigungen der Zugelemente 4 sind nicht dargestellt. Die Seitenführung geschieht durch Reibplatten 7. Zusätz­ lich können diagonal Zugketten 8 zwischen den Stützen 11 und den Querträgern 3 gespannt sein.In contrast, the known embodiment of FIG. 2 already represents an improvement. It shows a sliding grate, the side members 2 of which rest on cross members 3 which are suspended from long traction elements 4. The upper fastenings of the tension elements 4 are not shown. The side guidance is done by friction plates 7. Additional Lich, tension chains 8 can be stretched diagonally between the supports 11 and the cross members 3.

Der erfindungsgemäß ausgebildete Schubrost der Fig. 3 weist im Unterschied dazu unter einem Winkel α von (hier) 15 Grad angestellte Zugelemente 4 auf. Je nach den gewünschten Kraftverhältnissen sowie entsprechend Gewicht und Abmessungen kann der Winkel α zwischen 3 und 45 Grad variieren. Die im Querträger 3 entstehenden Zug­kräfte übernehmen die Funktion der Reibplatten 7 bzw. Zugketten 8. Durch Ausbildung der Zugelemente 4 als fest eingespannte, vorteilhaft in Paketform angeordnete Blatt­federn, die sich infolge der Schubbewegung verformen, sind sowohl der Schubspalt 15 als auch der Randspalt 14 verschleißunabhängig. Der Schubspalt 15 und der Rand­spalt 14 betragen bei dieser Konstruktion beispielsweise nur noch je 2 mm und behalten diese Güte ohne Einfluß von schleißenden Bauelementen des beweglichen Tragwerks bei. Damit erreichen die Rand- und Schubspalte die glei­che Größenordnung wie die Luftöffnungen im Bereich der Rostplatten 12 bei Aufbau des Rostes als Widerstandsrost gemäß EP-A-0 167 658.In contrast, the sliding grate of FIG. 3 designed according to the invention has tension elements 4 set at an angle α of (here) 15 degrees. Depending on the desired force ratios as well as weight and dimensions, the angle α can vary between 3 and 45 degrees. The tensile forces arising in the cross member 3 take over the function of the friction plates 7 or pull chains 8. By designing the tension elements 4 as firmly clamped leaf springs which are advantageously arranged in a package and which deform as a result of the pushing movement, both the pushing gap 15 and the edge gap 14 are independent of wear . The thrust gap 15 and the edge gap 14 are, for example, only 2 mm each in this construction and maintain this quality without the influence of wearing components of the movable supporting structure. The edge and shear gaps thus have the same order of magnitude as the air openings in the area of the grate plates 12 when the grate is constructed as a resistance grate according to EP-A-0 167 658.

Fig. 3 zeigt weiterhin Ausstülpungen 16 des unteren Ge­häuses, in denen die Zugelemente 4 angeordnet sind, und den Anschluß dieser Ausstülpungen an eine Luftzufuhrlei­tung 17. Dadurch befinden sich die Zugelemente 4 im kalten Luftstrom. Damit sind auch Längenänderungen der Zugelemente ausgeschaltet, die sich durch Wärmedehnungen bei unterschiedlicher Temperatur des Mauerwerks 10 oder durch Stauwärme aus dem unteren Gehäuse einstellen könn­ten.Fig. 3 also shows protuberances 16 of the lower housing, in which the tension elements 4 are arranged, and the connection of these protuberances to an air supply line 17. As a result, the tension elements 4 are in the cold air flow. This also eliminates changes in length of the tension elements, which could occur due to thermal expansion at different temperatures of the masonry 10 or due to heat build-up from the lower housing.

Claims (4)

1. Schubrost-Einrichtung zur Wärmebehandlung von insbe­sondere feinkörnigen Schüttgütern mit a) ein oberes und ein unteres, unter dem Druck des Kühlmediums stehendes Gehäuse, b) eine Mehrzahl von quer zu einer vorbestimmten För­derrichtung des Schüttguts mindestens teilweise beweglich sowie einander schuppenartig überlap­pend angeordneten Rostreihen, c) ein Tragwerk aus Längsträgern und Querträgern für die beweglich angeordneten Rostreihen und d) langgestreckte Zugelemente zur Aufhängung des Tragwerks,
dadurch gekennzeichnet, daß e) die Zugelemente (4) zu der senkrechten Rostlängs­ebene in einem Anstellwinkel (α) von mehr als 3 Grad angeordnet sind. 1. Sliding grate device for the heat treatment of, in particular, fine-grained bulk materials a) an upper and a lower, under the pressure of the cooling medium, b) a plurality of grate rows arranged at least partially movable transversely to a predetermined conveying direction of the bulk material and overlapping one another in a scale-like manner, c) a structure made of side members and cross members for the movably arranged grate rows and d) elongated tension elements for suspending the structure,
characterized in that e) the tension elements (4) to the vertical grate longitudinal plane are arranged at an angle of attack (α) of more than 3 degrees. 2. Einrichtung gemäß Anspruch 1, dadurch ge­kennzeichnet, daß die Zugelemente (4) als fest eingespannte und quer zur Förderrichtung an­geordnete Blattfedern ausgebildet sind.2. Device according to claim 1, characterized in that the tension elements (4) are designed as firmly clamped and arranged transversely to the conveying direction leaf springs. 3. Einrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Zugelemente (4) in schrägen, gasdicht ausgebilde­ten Ausstülpungen (16) des unteren Gehäuses angeordnet sind.3. Device according to one of claims 1 or 2, characterized in that the tension elements (4) are arranged in oblique, gas-tight protuberances (16) of the lower housing. 4. Einrichtung gemäß Anspruch 3, dadurch ge­kennzeichnet, daß die Ausstülpungen als Kanäle für die Zufuhr des Kühlmediums zum unteren Ge­häuse ausgebildet sind.4. Device according to claim 3, characterized in that the protuberances are designed as channels for the supply of the cooling medium to the lower housing.
EP89123308A 1988-12-30 1989-12-16 Pusher grate installation for the heat treatment of bulk material Expired - Lifetime EP0378821B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89123308T ATE88264T1 (en) 1988-12-30 1989-12-16 PUSHING GRID FOR THE HEAT TREATMENT OF BULK GOODS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3844493 1988-12-30
DE3844493A DE3844493C1 (en) 1988-12-30 1988-12-30

Publications (3)

Publication Number Publication Date
EP0378821A2 true EP0378821A2 (en) 1990-07-25
EP0378821A3 EP0378821A3 (en) 1991-05-08
EP0378821B1 EP0378821B1 (en) 1993-04-14

Family

ID=6370638

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89123308A Expired - Lifetime EP0378821B1 (en) 1988-12-30 1989-12-16 Pusher grate installation for the heat treatment of bulk material

Country Status (10)

Country Link
US (1) US4966548A (en)
EP (1) EP0378821B1 (en)
JP (1) JP2707343B2 (en)
KR (1) KR0144578B1 (en)
AT (1) ATE88264T1 (en)
CS (1) CS275776B6 (en)
DD (1) DD291136A5 (en)
DE (2) DE3844493C1 (en)
DK (1) DK167329B1 (en)
ES (1) ES2039824T3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4320725A1 (en) * 1993-06-23 1995-01-05 Kloeckner Humboldt Deutz Ag Push-grating cooler for cooling hot material
WO1995010014A1 (en) * 1993-10-06 1995-04-13 F.L. Smidth & Co. A/S Grate cooler
DE19906262A1 (en) * 1999-02-15 2000-08-17 Krupp Polysius Ag Furnace for treating powdery material has heating conveyor which mounted on reversible drives supported by slide bearing supports top half of which is connected to bottom of drive and via slide bearing to bottom half which is fixed to floor
EP1099923A1 (en) * 1999-11-09 2001-05-16 BMH Claudius Peters GmbH Sliding grate with side guiding elements for the movable part

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4136934C2 (en) * 1991-11-11 2001-03-29 Deutz Ag Chill grate cooler for cooling hot goods
FR2748552B1 (en) * 1996-05-13 1998-06-05 Gec Alsthom Stein Ind HOUSEHOLD INCINERATION GRID
DE19633969A1 (en) * 1996-08-22 1998-02-26 Karl Von Wedel Grid for material processing e.g. for cement production
US6298795B1 (en) 1997-03-13 2001-10-09 Bmh Claudius Peters Ag Mounting device for the movable part of a cooling or heating grate
DE50204095D1 (en) * 2002-09-07 2005-10-06 Fisia Babcock Environment Gmbh Waste incineration plant with a combustion grate
DE102007019530C5 (en) * 2007-04-25 2018-01-04 Alite Gmbh Method and device for cooling a bulk material layer lying on a conveyor grate
DE102008056468B3 (en) * 2008-11-04 2010-04-29 Fuguma Gmbh Maschinenbau Und Kraftwerkstechnik Sliding plate grating for combustion system that is utilized for combustion of e.g. recycling wood, has set of grating plates including bearing receiver that is supported in clearance-free manner
DE102012009511B4 (en) * 2012-05-14 2013-12-19 Outotec Oyj Rostwagen for receiving bulk material
CN108981404A (en) * 2018-08-27 2018-12-11 莱芜钢铁集团有限公司 A kind of tune circle method of sintering circular-cooler slewing frame

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB842507A (en) * 1957-04-09 1960-07-27 Fuller Co Horizontal heat-exchange apparatus
GB1138660A (en) * 1965-04-12 1969-01-01 Fuller Co Material cooler

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2764403A (en) * 1954-10-21 1956-09-25 William M Duncan Pallets and grate bar therefor
DE2658489C2 (en) * 1976-12-23 1983-12-22 Ludwig Riedhammer GmbH & Co KG, 8500 Nürnberg Furnace for sintering magnetic ceramic materials
DE2930406A1 (en) * 1979-07-26 1981-02-12 Krupp Polysius Ag SLIDING ROD
DE3131514C1 (en) * 1981-08-08 1988-09-08 Karl von Dipl.-Ing. Dipl.-Wirtsch.-Ing. 3057 Neustadt Wedel Method for cooling refrigerated goods beds and stowing device for carrying out the method
DE3332592C1 (en) * 1983-09-08 1985-05-15 Karl von Dipl.-Ing. Dipl.-Wirtsch.-Ing. 3057 Neustadt Wedel Grate floor composed of rust elements for bulk goods, such as cement clinker

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB842507A (en) * 1957-04-09 1960-07-27 Fuller Co Horizontal heat-exchange apparatus
GB1138660A (en) * 1965-04-12 1969-01-01 Fuller Co Material cooler

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4320725A1 (en) * 1993-06-23 1995-01-05 Kloeckner Humboldt Deutz Ag Push-grating cooler for cooling hot material
WO1995010014A1 (en) * 1993-10-06 1995-04-13 F.L. Smidth & Co. A/S Grate cooler
DE19906262A1 (en) * 1999-02-15 2000-08-17 Krupp Polysius Ag Furnace for treating powdery material has heating conveyor which mounted on reversible drives supported by slide bearing supports top half of which is connected to bottom of drive and via slide bearing to bottom half which is fixed to floor
EP1099923A1 (en) * 1999-11-09 2001-05-16 BMH Claudius Peters GmbH Sliding grate with side guiding elements for the movable part
US6345580B1 (en) 1999-11-09 2002-02-12 Bmh Claudius Peters Gmbh Thrust grate with lateral guidance members for the moved grate component

Also Published As

Publication number Publication date
DD291136A5 (en) 1991-06-20
EP0378821B1 (en) 1993-04-14
KR0144578B1 (en) 1998-08-17
CS275776B6 (en) 1992-03-18
DE58904080D1 (en) 1993-05-19
EP0378821A3 (en) 1991-05-08
JP2707343B2 (en) 1998-01-28
DE3844493C1 (en) 1990-08-23
DK663889D0 (en) 1989-12-22
DK167329B1 (en) 1993-10-11
DK663889A (en) 1990-07-01
ATE88264T1 (en) 1993-04-15
KR900010301A (en) 1990-07-07
US4966548A (en) 1990-10-30
ES2039824T3 (en) 1993-10-01
JPH02272296A (en) 1990-11-07

Similar Documents

Publication Publication Date Title
EP0378821B1 (en) Pusher grate installation for the heat treatment of bulk material
EP1743131B1 (en) Bulk-material cooler for cooling hot material to be cooled
WO2013056687A1 (en) Grate step module for a thrust combustion grate
EP0007464B1 (en) Walking-beam type furnace with supporting plates
EP3171117B1 (en) Regenerative heat exchanger with improved sealing frame
EP3037250A2 (en) Machine frame for a roller press
EP1704005A1 (en) Casting machine
DE3739452C1 (en) Coke oven door with ceramic shield structure
DE102017101544A1 (en) Support element for a tunnel kiln car or carriage, tunnel kiln car or carriage with such support elements and tunnel kiln with such a tunnel kiln car or carriage
DE737908C (en) Sealing device for constantly rotating regenerative preheater for air or the like.
DE3047650C2 (en) Device for producing concrete slabs
EP0531859B1 (en) Firing furnace, in particular for ceramic articles
DE10133973B4 (en) Grate and method for constructing a grate consisting of lamellar bodies which are positively connected to one another
DE4136934C2 (en) Chill grate cooler for cooling hot goods
DE3128655A1 (en) "OVEN FOR THE HEAT TREATMENT OF GLASS PANELS"
DE3333880A1 (en) DEVICE FOR CONTROLLING THE BLADE SPACES ON A BRIDGE DEVICE FOR EXPANSION JOINTS IN BRIDGES OD. DGL.
EP4014002B1 (en) Cooler for cooling bulk material
EP0244710A2 (en) Roof for a glass melting furnace or a working chamber
DE547686C (en) Device for maintaining the profile in tunnel kiln cars
DE10042556C2 (en) kiln cars
DE102011007489B4 (en) Arrangement for surface heating and cooling
DE1925586A1 (en) Device for absorbing the axial thrust of inclined rotating drums
DE102015106579B4 (en) Sectional seal for a stove
DD145301A1 (en) SLIDING ELEMENT FOR MOVABLE WORK AND TEACHERS
DE102017130286A1 (en) Device for exchanging a fabric in a web forming machine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB IT LI

17P Request for examination filed

Effective date: 19901228

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB IT LI

17Q First examination report despatched

Effective date: 19920722

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB IT LI

REF Corresponds to:

Ref document number: 88264

Country of ref document: AT

Date of ref document: 19930415

Kind code of ref document: T

REF Corresponds to:

Ref document number: 58904080

Country of ref document: DE

Date of ref document: 19930519

ITF It: translation for a ep patent filed

Owner name: LENZI & C.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930623

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2039824

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20021129

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20021217

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20021223

Year of fee payment: 14

Ref country code: AT

Payment date: 20021223

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20021224

Year of fee payment: 14

Ref country code: CH

Payment date: 20021224

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20030107

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031216

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031216

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031231

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031231

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031231

BERE Be: lapsed

Owner name: *VON WEDEL KARL

Effective date: 20031231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040701

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20031216

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20031217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051216