EP0152520B1 - Grate for furnaces - Google Patents

Grate for furnaces Download PDF

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Publication number
EP0152520B1
EP0152520B1 EP84109779A EP84109779A EP0152520B1 EP 0152520 B1 EP0152520 B1 EP 0152520B1 EP 84109779 A EP84109779 A EP 84109779A EP 84109779 A EP84109779 A EP 84109779A EP 0152520 B1 EP0152520 B1 EP 0152520B1
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EP
European Patent Office
Prior art keywords
grate
grate bar
bar
recesses
flanks
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84109779A
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German (de)
French (fr)
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EP0152520A2 (en
EP0152520A3 (en
Inventor
Erich Weber
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.)
Martin GmbH fuer Umwelt und Energietechnik
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Martin GmbH fuer Umwelt und Energietechnik
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Publication date
Application filed by Martin GmbH fuer Umwelt und Energietechnik filed Critical Martin GmbH fuer Umwelt und Energietechnik
Publication of EP0152520A2 publication Critical patent/EP0152520A2/en
Publication of EP0152520A3 publication Critical patent/EP0152520A3/en
Application granted granted Critical
Publication of EP0152520B1 publication Critical patent/EP0152520B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H17/00—Details of grates
    • F23H17/12—Fire-bars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H7/00—Inclined or stepped grates
    • F23H7/06—Inclined or stepped grates with movable bars disposed parallel to direction of fuel feeding

Definitions

  • the invention relates to a grate for furnaces, with grate steps that can be moved in their longitudinal direction and partially overlap one another, from individual grate bars that can be moved relative to one another and that lie against one another with lateral contact surfaces on their grate bar flanks, which protrude at least partially from the outer ribs of the grate bar that project downward.
  • a grate for furnaces in which the individual grate bars have tines tapering downwards, which both form a firm support surface with suitable air passages and also require great resistance to bending.
  • a bar projecting over the tines is provided on the top of the grate bar from this surface and also projects beyond the tines in the interstices between the tines. Nevertheless, there remains a gap into which smaller pieces of slag can penetrate, so that the disadvantages already explained above occur.
  • the object of the invention is to provide a grate or the grate bars necessary for this, in which the disturbances resulting from the penetration between the grate bars are avoided, d. H. to design the grate in such a way that the parts penetrating between the grate bars can be quickly removed downwards between the grate bar flanks, so that they cannot give rise to jamming of the adjacent grate bars or to an increase in the distance between adjacent grate bars.
  • the cavity cooling of the grate bar should not be significantly impaired.
  • This object is achieved by the features specified in claim 1.
  • This configuration of the grate bar flanks creates sawtooth-like contact surfaces, the flanks of which form cutting edges which, with the corresponding cutting edges of the adjacent grate bar, act on the penetrated parts, such as the cooperating cutting edges of a cutter bar, on the material to be cut. Since the cutting edges are inclined due to the sawtooth-like design, the relative movement of adjacent grate bars results in a force effect on the parts, which is directed downwards, ie starting from grate bar bridges to the underside of the grate bar. The recesses in the flanks form thereby relieving niches from which the parts can fall out freely once they get into such a unloading stungsnische 'due to the mutual movement.
  • a particularly favorable ejection effect on the penetrated parts is achieved when the flanks of the teeth remaining between the recesses have an inclination with respect to the surface of the grate bar of between 20 and 50 °, in particular of 35 °.
  • the tooth pitch essentially corresponds to the double relative movement of adjacent grate bars, it is ensured that the cutting edges move against one another along their entire length during a complete stroke, as a result of which parts which penetrate into the recesses are actually detected and adjusted promoted below.
  • the grate bar flank remaining above the recesses has a height that makes up about a third to a quarter of the total height of the grate bar flank and thus corresponds to only a small part of the grate bar flank height, it is ensured that penetrated parts very soon get into a recess and there through the sawtooth-like grate bar flanks are pushed down.
  • the invention also relates to a grate bar, which is characterized in claim 6. Refinements of this grate bar result from subclaims 7 and 8.
  • Each grate bar flank has sawtooth-like recesses 5, which are closed upwards in the direction of the grate bar bridges 2 and are open towards the underside of the grate bar.
  • relief niches are formed between the tooth flanks 7 of the teeth 9 formed by the recesses 5, which are composed of the recesses of adjacent grate bars and have a constantly changing volume during the relative stroke. In these relief niches those parts fall that come between adjacent grate bars and are pressed by the cutting edges 8 adjacent grate bars downwards in the direction of arrow 10 due to the wedge effect resulting from the cutting edge inclination.
  • Such a particle is designated by 11.
  • the part of a grate bar flank remaining above the recess as far as the grate bar ridge is designated by 12 and forms that region of the grate bar flank with the lowest height. In the exemplary embodiment shown, this area has a height that makes up about a quarter of the total height of the grate bar flank 3.
  • the distance between two teeth 9 of a grate bar flank is designated 13 and forms a tooth pitch of the grate bar flank.
  • two adjacent grate bars are shown offset from each other by half a tooth pitch, so that with a grate bar stroke, which corresponds to half the tooth pitch, the teeth of adjacent grate bar flanks are in the front position of the movable grate bar with a gap , while the teeth 9 of adjacent grate bar flanks overlap when the movable grate bar is in its rear stoking position.
  • This tooth-like configuration of the grate bar flanks is preferably limited to the focal path area of a grate bar, that is the area which is not subject to permanent overlap by the grate bar located above it.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Furnace Details (AREA)
  • Food-Manufacturing Devices (AREA)
  • Catalysts (AREA)

Description

Die Erfindung bezieht sich auf einen Rost für Feuerungen, mit in seiner Längsrichtung bewegbaren und einander teilweise überdeckenden Roststufen aus einzelnen relativ zueinander bewegbaren Roststäben, die mit seitlichen Berührungsflächen an ihren Roststabflanken, aneinanderliegen, welche zumindest teilweise gegenüber nach unten ragenden Außenrippen des Roststabes hervorstehen.The invention relates to a grate for furnaces, with grate steps that can be moved in their longitudinal direction and partially overlap one another, from individual grate bars that can be moved relative to one another and that lie against one another with lateral contact surfaces on their grate bar flanks, which protrude at least partially from the outer ribs of the grate bar that project downward.

Während der Schürbewegung des Rostes können sich widerstandsfähige, insbesondere metallische Feinteile zwischen die einzelnen Roststäbe schieben und sich zwischen diesen verklemmen. Hierdurch entstehen Spalte zwischen den Roststäben, durch die in verstärktem Maße die Luft aus der Unterwindzone hindurchstreicht, so daß nicht nur ein ungleichmäßiger Abbrand auf dem Rost, sondern auch bei hohlen, zwangsweise luftdurchströmten Roststäben die Kühlung der Roststäbe nachläßt. Dies kann zu einer Überhitzung und einem erhöhten Verschleiß der Roststäbe führen. Weiterhin können diese Teile aber auch, wenn sie trotz der Relativbewegung benachbarter Stäbe nicht verschleißen, durch Spaltvergrößerung zu einem Blockieren der gegenseitigen Bewegungsmöglichkeit benachbarter Roststäbe führen.During the stoking movement of the grate, resistant, in particular metallic, fine parts can slide between the individual grate bars and jam between them. This creates gaps between the grate bars through which the air from the underwind zone passes to an increased extent, so that not only uneven burn-up on the grate, but also cooling of the grate bars with hollow, forced air-flowed bars decreases. This can lead to overheating and increased wear of the grate bars. Furthermore, if these parts do not wear despite the relative movement of adjacent bars, these parts can also block the mutual possibility of movement of adjacent grate bars by increasing the gap.

Aus der DE-C-136 644 ist ein Rost für Feuerungen bekannt, bei dem die einzelnen Roststäbe nach unten sich verjüngende Zinken aufweisen, die sowohl eine feste Tragfläche mit geeigneten Luftdurchgängen bilden als auch eine große Widerstandsfähigkeit gegen Durchbiegen bedingen. Zur Vermeidung eines Eindringens von Schlacke in die Zwischenräume der Zinken ist auf der Oberseite des Roststabes ausgehend von dieser Oberfläche, eine über die Zinken hervorstehende Leiste vorgesehen, die auch in den Zwischenräumen zwischen den Zinken über diese hinausragt. Trotzdem verbleibt noch ein Spalt, in den kleinere Schlackenteile eindringen können, so daß die bereits weiter oben erläuterten Nachteile auftreten.From DE-C-136 644 a grate for furnaces is known, in which the individual grate bars have tines tapering downwards, which both form a firm support surface with suitable air passages and also require great resistance to bending. To prevent slag from penetrating into the interstices of the tines, a bar projecting over the tines is provided on the top of the grate bar from this surface and also projects beyond the tines in the interstices between the tines. Nevertheless, there remains a gap into which smaller pieces of slag can penetrate, so that the disadvantages already explained above occur.

Aufgabe der Erfindung ist es, einen Rost bzw. die hierfür notwendigen Roststäbe zu schaffen, bei dem die sich aus dem Eindringen zwischen die Roststäbe ergebenden Störungen vermieden sind, d. h. den Rost so auszubilden, daß die zwischen die Roststäbe eindringenden Teile rasch zwischen den Roststabflanken nach unten abgeführt werden können, so daß sie weder zu einem Verklemmen der benachbarten Roststäbe, noch zu einer Vergrößerung des Abstandes zwischen benachbarten Roststäben Veranlassung geben können. Insbesondere soll bei hohl ausgebildeten Roststäben die Hohlraumkühlung des Roststabes nicht wesentlich beeinträchtigt werden.The object of the invention is to provide a grate or the grate bars necessary for this, in which the disturbances resulting from the penetration between the grate bars are avoided, d. H. to design the grate in such a way that the parts penetrating between the grate bars can be quickly removed downwards between the grate bar flanks, so that they cannot give rise to jamming of the adjacent grate bars or to an increase in the distance between adjacent grate bars. In particular, in the case of hollow grate bars, the cavity cooling of the grate bar should not be significantly impaired.

Diese Aufgabe wird durch die im Anspruch 1 angegebenen Merkmale gelöst. Durch diese Ausgestaltung der Roststabflanken entstehen sägezahnartige Berührungsflächen, deren Flanken Schneiden bilden, die mit den entsprechenden Schneiden des benachbarten Roststabes auf die eingedrungenen Teile wie die zusammenwirkenden Schneiden eines Mähbalkens auf das schneidende Gut einwirken. Da die Schneiden aufgrund der sägezahnartigen Ausbildung schräg gestellt sind, ergibt sich hier aufgrund der Relativbewegung benachbarter Roststäbe eine Kraftwirkung auf die Teile, die nach unten, d. h. ausgehend von Roststabrücken zur Roststabunterseite gerichtet ist. Die Ausnehmungen in den Flanken bilden dabei Entlastungsnischen, aus denen die Teile frei herausfallen können, sobald sie aufgrund der gegenseitigen Bewegung in eine solche Entla- stungsnische' geraten.This object is achieved by the features specified in claim 1. This configuration of the grate bar flanks creates sawtooth-like contact surfaces, the flanks of which form cutting edges which, with the corresponding cutting edges of the adjacent grate bar, act on the penetrated parts, such as the cooperating cutting edges of a cutter bar, on the material to be cut. Since the cutting edges are inclined due to the sawtooth-like design, the relative movement of adjacent grate bars results in a force effect on the parts, which is directed downwards, ie starting from grate bar bridges to the underside of the grate bar. The recesses in the flanks form thereby relieving niches from which the parts can fall out freely once they get into such a unloading stungsnische 'due to the mutual movement.

Eine besonders günstige Ausschubwirkung auf die eingedrungenen Teile wird dann erreicht, wenn die Flanken der zwischen den Ausnehmungen verbleibenden Zähne eine Neigung gegenüber der Roststabrückenoberfläche von zwischen 20 und 50°, insbesondere von 35° aufweisen.A particularly favorable ejection effect on the penetrated parts is achieved when the flanks of the teeth remaining between the recesses have an inclination with respect to the surface of the grate bar of between 20 and 50 °, in particular of 35 °.

Diese Ausschubwirkung wird auch dadurch wesentlich verbessert, wenn in weiterer Ausgestaltung der Erfindung die sägezahnartigen Ausnehmungen jeweils benachbarter Roststäbe um eine halbe Zahnteilung in Längsrichtung gegeneinander versetzt sind, wodurch sichergestellt ist, daß diejenige Relativstellung benachbarter Schneiden erreichbar ist, in welcher eine möglichst geringe Überdeckung der sägezahnartigen Flanken eintritt und damit möglichst große Entlastungsnischen entstehen.This extension effect is also significantly improved if, in a further embodiment of the invention, the sawtooth-like recesses of adjacent grate bars are offset by half a tooth pitch in the longitudinal direction, thereby ensuring that the relative position of adjacent cutting edges can be achieved in which the saw tooth-like overlap is as small as possible Flanks occur and thus the largest possible niches.

Wenn nach einer weiteren Ausgestaltung der Erfindung die Zahnteilung im wesentlichen der doppelten Relativbewegung benachbarter Roststäbe entspricht, so wird sichergestellt, daß bei einem vollständigen Hub die Schneiden sich an ihrer gesamten Länge gegeneinander bewegen, wodurch Teile die in die Ausnehmungen eindringen, auch tatsächlich erfaßt und nach unten gefördert werden.If, according to a further embodiment of the invention, the tooth pitch essentially corresponds to the double relative movement of adjacent grate bars, it is ensured that the cutting edges move against one another along their entire length during a complete stroke, as a result of which parts which penetrate into the recesses are actually detected and adjusted promoted below.

Wenn die über den Ausnehmungen verbleibende Roststabflanke eine Höhe aufweist, die etwa ein Drittel bis ein Viertel der Gesamthöhe der Roststabflanke ausmacht und damit nur einem geringen Teil der Roststabflankenhöhe entspricht, so wird sichergestellt, daß eingedrungene Teile sehr bald in eine Ausnehmung gelangen und dort durch die sägezahnartigen Roststabflanken nach unten herausgedrückt werden.If the grate bar flank remaining above the recesses has a height that makes up about a third to a quarter of the total height of the grate bar flank and thus corresponds to only a small part of the grate bar flank height, it is ensured that penetrated parts very soon get into a recess and there through the sawtooth-like grate bar flanks are pushed down.

Die Erfindung bezieht sich auch auf einen Roststab, der im Anspruch 6 gekennzeichnet ist. Ausgestaltungen dieses Roststabes ergeben sich aus den Unteransprüchen 7 und 8.The invention also relates to a grate bar, which is characterized in claim 6. Refinements of this grate bar result from subclaims 7 and 8.

Die Erfindung ist in der Zeichnung beispielsweise dargestellt. In dieser zeigen :

  • Fig. 1 eine Ansicht von oben auf eine aus mehreren relativ zueinander bewegbaren Roststäben gebildete Roststufe eines Feuerungsrostes ;
  • Fig. 2 einen Schnitt nach der Linie 11-11 in Fig. 1 ;
  • Fig. 3 einen Schnitt nach der Linie 111-111 in Fig.
Wie aus Fig. 1 ersichtlich, ist eine Roststufe eines Feuerungsrostes aus mehreren nebeneinanderliegenden Roststäben 1 gebildet, die relativ zueinander bewegbar sind, was durch die versetzte Lage in den Fig. 1 und 2 angedeutet ist. Wie die Fig. 2 und 3 zeigen, weist jeder Roststab 1 einen Roststabrücken 2 und Roststabflanken 3 auf, die gegenüber nach unten ragenden Außenrippen 4 seitlich überstehen.The invention is shown in the drawing, for example. In this show:
  • 1 shows a view from above of a grate step of a firing grate formed from a plurality of grate bars movable relative to one another;
  • Figure 2 is a section along the line 11-11 in Fig. 1.
  • 3 shows a section along the line 111-111 in FIG.
As can be seen from FIG. 1, a grate step of a firing grate is formed from a plurality of grate bars 1 lying next to one another, which are movable relative to one another, which is indicated by the offset position in FIGS. 1 and 2. As shown in FIGS. 2 and 3, each grate bar 1 has a grate bar bridge 2 and grate bar flanks 3 which laterally protrude from the outer ribs 4 projecting downwards.

Jede Roststabflanke weist sägezahnartige Ausnehmungen 5 auf, die nach oben in Richtung auf den Roststabrücken 2 geschlossen und zur Roststabunterseite hin offen sind. Hierdurch entstehen sägezahnartige Berührungsflächen 6, wobei die einzelnen Sägezähne Flanken 7 aufweisen, deren Außenkanten an den Berührungsflächen Schneiden 8 bilden, die mit den Schneiden des benachbarten Roststabes zusammenwirken, wobei sich die Überdeckung der Berührungsflächen 6 während eines Relativhubes ständig ändert, so daß die Schneiden 8 wie die Klingen einer Schere aneinander vorbeibewegt werden. Zwischen den Zahnflanken 7 der durch die Ausnehmungen 5 gebildeten Zähne 9 entstehen bei einem Relativhub Entlastungsnischen, die sich aus den Ausnehmungen benachbarter Roststäbe zusammensetzen und während des Relativhubes ein stetig sich änderndes Volumen aufweisen. In diese Entlastungsnischen fallen diejenigen Teile, die zwischen benachbarte Roststäbe gelangen und von den Schneiden 8 benachbarten Roststäbe aufgrund der sich aus der Schneidenneigung ergebenden Keilwirkung nach unten in Richtung des Pfeiles 10 gedrückt werden. Ein solches Teilchen ist mit 11 bezeichnet.Each grate bar flank has sawtooth-like recesses 5, which are closed upwards in the direction of the grate bar bridges 2 and are open towards the underside of the grate bar. This creates sawtooth-like contact surfaces 6, the individual saw teeth having flanks 7, the outer edges of which form cutting edges 8 on the contact surfaces, which interact with the cutting edges of the adjacent grate bar, the overlap of the contact surfaces 6 constantly changing during a relative stroke, so that the cutting edges 8 how the blades of scissors are moved past each other. During a relative stroke, relief niches are formed between the tooth flanks 7 of the teeth 9 formed by the recesses 5, which are composed of the recesses of adjacent grate bars and have a constantly changing volume during the relative stroke. In these relief niches those parts fall that come between adjacent grate bars and are pressed by the cutting edges 8 adjacent grate bars downwards in the direction of arrow 10 due to the wedge effect resulting from the cutting edge inclination. Such a particle is designated by 11.

Der oberhalb der Ausnehmung bis zum Roststabrücken verbleibende Teil einer Roststabflanke ist mit 12 bezeichnet und bildet denjenigen Bereich der Roststabflanke mit der geringsten Höhe. Dieser Bereich weist im dargestellten Ausführungsbeispiel eine Höhe auf, die etwa ein Viertel der gesamten Höhe der Roststabflanke 3 ausmacht.The part of a grate bar flank remaining above the recess as far as the grate bar ridge is designated by 12 and forms that region of the grate bar flank with the lowest height. In the exemplary embodiment shown, this area has a height that makes up about a quarter of the total height of the grate bar flank 3.

Der Abstand zwischen zwei Zähnen 9 einer Roststabflanke ist mit 13 bezeichnet und bildet eine Zahnteilung der Roststabflanke. Wie aus der Darstellung in Fig. 2 ersichtlich, sind jeweils zwei benachbarte Roststäbe um eine halbe Zahnteilung gegeneinander versetzt dargestellt, so daß bei einem Roststabhub, welcher der halben Zahnteilung entspricht, die Zähne benachbarter Roststabflanken in der vorderen Stellung des bewegbaren Roststabes auf Lücke zueinander stehen, während sich die Zähne 9 benachbarter Roststabflanken überdecken, wenn sich der bewegbare Roststab in seiner hinteren Schürstellung befindet.The distance between two teeth 9 of a grate bar flank is designated 13 and forms a tooth pitch of the grate bar flank. As can be seen from the illustration in Fig. 2, two adjacent grate bars are shown offset from each other by half a tooth pitch, so that with a grate bar stroke, which corresponds to half the tooth pitch, the teeth of adjacent grate bar flanks are in the front position of the movable grate bar with a gap , while the teeth 9 of adjacent grate bar flanks overlap when the movable grate bar is in its rear stoking position.

Diese zahnartige Ausbildung der Roststabflanken ist vorzugsweise auf den Brennbahnbereich eines Roststabes beschränkt, das ist derjenige Bereich, der nicht einer dauernden Überdeckung durch den darüberliegenden Roststab unterworfen ist.This tooth-like configuration of the grate bar flanks is preferably limited to the focal path area of a grate bar, that is the area which is not subject to permanent overlap by the grate bar located above it.

Claims (8)

1. Grate for furnaces, with lengthwise movable and mutually partially overlapping grate stages made of individual grate bars longitudinally movable relative to one another, which rest against one another with lateral contact surfaces on their grate bar flanks, which project at least partially with respect to downwardly projecting external ribs of the grate bar, characterised In that the grate bar flanks (3) in the areas projecting with respect to the external ribs (4) have, at least in the combustion path area of the grate bar, saw-tooth-like recesses (5) which are closed with respect to the back of the grate bar (2) and open towards the underside of the grate bar.
2. Grate according to Claim 1, characterised in. that the saw-tooth-like recesses (5) of adjacent grate bars (1) are longitudinally offset with respect to each other by half a tooth pitch (13).
3. Grate according to Claim 1 or 2, characterised in that the tooth pitch (13) substantially corresponds to twice the relative movement of adjacent grate bars (1).
4. Grate according to one of Claims 1 to 3, characterised in that the flanks (7) of the teeth (9) remaining between the recesses (5) have an angle with respect to the grate bar back surface of between 20 and 50°, in particular 35°.
5. Grate according to one of Claims 1 to 4, characterised in that the grate bar flank (12) remaining above the recesses (5) has a height equivalent to about one third to one quarter of the total height of the grate bar flank (3).
6. Grate bar for a grate for furnaces, with lengthwise movable grate stages made of individual grate bars movable relative to one another, which rest against one another with lateral contact surfaces on their grate bar flanks, which project at least partially with respect to external ribs projecting downwards, characterised in that the grate bar flanks (3) in the area projecting with respect to the external ribs (4) and at least in the combustion path area of the grate bar (1) have saw-tooth-like recesses (5) which are closed against the grate bar back (2) and open towards the underside of the grate bar.
7. Grate bar according to Claim 6, characterised in that the flanks (7) of the teeth (9) remaining between the recesses (5) have an angle with respect to the grate bar back surface of between 20 and 50°, in particular 35°.
8. Grate bar according to Claim 6 or 7, characterised in that the grate bar flank (12) remaining above the recesses (5) has a height equivalent to about one third to one quarter of the total height of the grate bar flank (3).
EP84109779A 1983-08-24 1984-08-17 Grate for furnaces Expired EP0152520B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3330637 1983-08-24
DE3330637A DE3330637C1 (en) 1983-08-24 1983-08-24 Rust, especially for furnaces

Publications (3)

Publication Number Publication Date
EP0152520A2 EP0152520A2 (en) 1985-08-28
EP0152520A3 EP0152520A3 (en) 1986-04-02
EP0152520B1 true EP0152520B1 (en) 1988-11-09

Family

ID=6207397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84109779A Expired EP0152520B1 (en) 1983-08-24 1984-08-17 Grate for furnaces

Country Status (8)

Country Link
US (1) US4520792A (en)
EP (1) EP0152520B1 (en)
JP (1) JPS6060415A (en)
CA (1) CA1227376A (en)
DE (1) DE3330637C1 (en)
DK (1) DK160958C (en)
SG (1) SG78889G (en)
SU (1) SU1344255A3 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2312947A (en) * 1996-05-10 1997-11-12 Boiler Energy Serv Ltd Grate bar
FR2885403A1 (en) * 2005-05-03 2006-11-10 Saretco Sa GRID BAR AND GRID FOR FIREPLACE WITH SOLIDARITY GRADES
FR2885404A1 (en) * 2005-05-03 2006-11-10 Saretco Sa GRID BAR AND GRID FOR FIREPLACE WITH SOLIDARITY GRADES WITH DIRECT AIR COMBUSTION
ITPV20100006A1 (en) * 2010-04-09 2011-10-10 Davide Raveri ALTERNATE MOBILE GRID
GB2483479A (en) 2010-09-09 2012-03-14 Tiska Gmbh Furnace grate bars
US9193528B2 (en) * 2014-04-10 2015-11-24 Grifols Worldwide Operations Limited Vial transport mechanism
EP2985339B1 (en) * 2014-08-11 2020-05-13 Kompoferm GmbH Fermentation residue conditioning device and method for conditioning fermentation residues
CN108286712B (en) * 2018-03-15 2023-09-22 重庆科技学院 Waste treatment tube furnace based on gear-rubbing fire bar group
CN108413407B (en) * 2018-03-15 2023-09-22 重庆科技学院 Sawtooth-shaped gear-rubbing fire bar
CN110925765B (en) * 2019-12-13 2024-03-26 重庆科技学院 Multi-blade multi-tooth composite movable fire grate segment

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE136644C (en) *
DE457741C (en) * 1928-03-22 Reinhard Tweer Grate made of interlocking grate bars with serpentine teeth
US1553587A (en) * 1924-06-10 1925-09-15 Balmfirth Alfred Grate
GB420257A (en) * 1933-12-14 1934-11-28 Alfred George Howell Improvements in firebars for use in land and marine boilers
US2806439A (en) * 1952-11-08 1957-09-17 Detroit Stoker Co Grate
DE3049086C2 (en) * 1980-12-24 1983-07-14 Widmer & Ernst AG, 5430 Wettingen Grate bar row for furnace grates in incinerators

Also Published As

Publication number Publication date
DK160958B (en) 1991-05-06
JPS6060415A (en) 1985-04-08
DE3330637C1 (en) 1985-01-17
EP0152520A2 (en) 1985-08-28
CA1227376A (en) 1987-09-29
DK404284D0 (en) 1984-08-23
EP0152520A3 (en) 1986-04-02
DK404284A (en) 1985-02-25
DK160958C (en) 1991-11-04
SU1344255A3 (en) 1987-10-07
SG78889G (en) 1990-07-06
JPS6352284B2 (en) 1988-10-18
US4520792A (en) 1985-06-04

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