EP0134991A1 - Grille inclinée pour four de combustion - Google Patents

Grille inclinée pour four de combustion Download PDF

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Publication number
EP0134991A1
EP0134991A1 EP84108061A EP84108061A EP0134991A1 EP 0134991 A1 EP0134991 A1 EP 0134991A1 EP 84108061 A EP84108061 A EP 84108061A EP 84108061 A EP84108061 A EP 84108061A EP 0134991 A1 EP0134991 A1 EP 0134991A1
Authority
EP
European Patent Office
Prior art keywords
grate
grate bars
bars
bearings
bearing
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
EP84108061A
Other languages
German (de)
English (en)
Other versions
EP0134991B1 (fr
Inventor
Eugen Dipl.-Ing. Doerges
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.)
Richard Kablitz & Mitthof GmbH
Original Assignee
Richard Kablitz & Mitthof GmbH
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 Richard Kablitz & Mitthof GmbH filed Critical Richard Kablitz & Mitthof GmbH
Priority to AT84108061T priority Critical patent/ATE26613T1/de
Publication of EP0134991A1 publication Critical patent/EP0134991A1/fr
Application granted granted Critical
Publication of EP0134991B1 publication Critical patent/EP0134991B1/fr
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
    • F23H7/00—Inclined or stepped grates
    • F23H7/06—Inclined or stepped grates with movable bars disposed parallel to direction of fuel feeding
    • F23H7/08—Inclined or stepped grates with movable bars disposed parallel to direction of fuel feeding reciprocating along their axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H17/00—Details of grates

Definitions

  • the invention relates to a grate for furnaces on which a solid firing material is conveyed in a conveying direction during the combustion, with grate bars which extend transversely to the conveying direction and have upwardly directed bearing surfaces for the ends of grate bars which are parallel to one another and transversely to extend the grate bar separated from one another by grate gaps and of which at least the ends of a grate bar are mounted for sliding back and forth on the bearing surfaces of the grate bars by means of slide bearings.
  • a grate of this type is known from published European patent application 24 844.
  • the slide bearings for the movable grate bars are connected to the grate bars by screws.
  • the invention has for its object to provide a grate of the type mentioned, in which the plain bearings can be easily replaced despite a perfect connection to the grate bars, so that the service life of the grate can be significantly extended.
  • the plain bearings lie loosely on the bearing surfaces of the grate beams and are secured against displacement by stops. It is thereby achieved that it is not necessary to connect the slide bearings to the grate bars or grate bars by screws or the like.
  • the plain bearings lie firmly on the grate beams by their own weight and are secured against displacement by the stops. This securing of the plain bearings is reinforced by the weight of the movable grate bars resting on them. By lifting the grate bars from the grate beams, the plain bearings can easily be lifted off the bearing surfaces of the grate beams and replaced with new ones.
  • the plain bearings can be made of a material that is softer than the material of the grate beams.
  • the protruding bearing surfaces of the slide bearings are then gradually worn out and can then be replaced when they are worn down to the surface of the grate bar. In this way, wear of the grate bars due to friction with the grate bars can be completely avoided, and at the same time wear of the grate bars due to the softer material of the slide bearings is practically negligible.
  • the plain bearings can also consist of a material that is harder than the material of the grate bars.
  • neither the grate beams nor the plain bearings are worn due to the friction with the grate bars. If the movable grate bars wear out, they can be replaced after a certain time.
  • the slide bearings consist of a wear-resistant material, the hardness of which lies between the hardness of the materials from which the grate bars and the movable grate bars are made. If gray cast iron is used for the grate bars, then a chrome cast iron can be used for the slide bearings and an even harder chrome cast iron for the grate bars Movement of the movable grate bars caused abrasion is limited to the easily replaceable plain bearings.
  • the slide bearings for a movable grate bar arranged between two fixed grate bars have a length measured in the longitudinal direction of the grate bars , which is greater than the sum of the width of the movable grate bars and the two subsequent grate gaps, so that the fixed grate bars lie on the ends of the plain bearings. It is thereby achieved that as soon as the fixed grate bars are connected to the grate bars in a known manner, the plain bearings are held firmly in the depressions of the grate bars by the fixed grate bars connected to the grate bars.
  • the slanted grate shown in FIG. 1 of the furnace shown in section has grate bars 4 mounted on a base frame designated as a whole as 3, which extend horizontally and perpendicularly to the conveying direction 5 of the combustible material not shown in the drawing.
  • the ends of grate bars 6 are supported on the grate bars 4.
  • grate bars 6a and 6b are provided, of which the grate bars 6b are provided with transverse grooves on their surface. While the grate bars 6a are firmly connected to the grate bars 6b by a tongue and groove connection 8 and 9 and by engaging their rear ends in a recess 11 extending over the entire length of the grate bars 4, the grate bars 6b are approximately axial, that is to say approximately in their longitudinal direction movably mounted on the bearing surfaces 7 of the grate beams. The movable grate bars 6b are driven in a manner known in the case of inclined grates of this type, so that a description of these drives is unnecessary.
  • slide bearings 13 For the storage of the bearing surfaces 12 at the ends of the grate bars 6b, there are slide bearings 13 in the form of rectangular plates, which are arranged in rectangular recesses 14 in the grate bars.
  • the thickness of the plate-shaped plain bearings 13 is at least as great as the depth of the recesses 14, so that the upper surfaces, that is to say the bearing surfaces of the plain bearings 13, are flush with the bearing surfaces 7 of the grating beams or protrude above them.
  • a rib 16 which is parallel to the direction of movement of the movable grate bars 6b and which engages in a corresponding groove 15 in the bearing surfaces 12 of the grate bars 6b.
  • the depth of these grooves 15 is at least as great as the height of the ribs 16.
  • several ribs can also be provided on each slide bearing for engagement in corresponding grooves of the grate bars.
  • a fixed grate bar 6a is followed by a movable grate bar 6b, so that a movable grate bar 6b is arranged between two fixed grate bars 6a and vice versa.
  • the distances between the springs 8 for the fixed grate bars 6a and the ribs 16 for the movable grate bars 6b are dimensioned such that there are precisely defined grate gaps 17 between the grate bars, which are so narrow that the falling through of particles of the combustion material is largely avoided.
  • the slide bearings 13 are held in their recesses 14 by the fixed grate bars 6a.
  • the rib 16 penetrates deeper into the groove 15 until its upper surface comes to rest against the bottom of the groove. A very firm and precisely defined fit of the movable grate bars 6b is thereby achieved without these being worn away by the softer material of the slide bearing 13.
  • temperature-resistant, hardened high-alloy chrome cast iron e.g. 165 CrMo V 15 can be used.

Landscapes

  • 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)
  • Pyrane Compounds (AREA)
  • Furnace Charging Or Discharging (AREA)
EP84108061A 1983-07-23 1984-07-10 Grille inclinée pour four de combustion Expired EP0134991B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84108061T ATE26613T1 (de) 1983-07-23 1984-07-10 Schraegrost fuer feuerungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3326694 1983-07-23
DE19833326694 DE3326694A1 (de) 1983-07-23 1983-07-23 Schraegrost fuer feuerungen

Publications (2)

Publication Number Publication Date
EP0134991A1 true EP0134991A1 (fr) 1985-03-27
EP0134991B1 EP0134991B1 (fr) 1987-04-15

Family

ID=6204812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84108061A Expired EP0134991B1 (fr) 1983-07-23 1984-07-10 Grille inclinée pour four de combustion

Country Status (6)

Country Link
US (1) US4569437A (fr)
EP (1) EP0134991B1 (fr)
AT (1) ATE26613T1 (fr)
CA (1) CA1224976A (fr)
DE (2) DE3326694A1 (fr)
FI (1) FI75418C (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU572873B2 (en) * 1983-08-30 1988-05-19 Deutsche Richard Kablitz Gesellschaft Fur Okonomie Der Dampferzeugungskosten Und Feuerungskontrolle Richard Kablitz Gmbh & Co. Kg Inclined grate for furnace
DE4320725A1 (de) * 1993-06-23 1995-01-05 Kloeckner Humboldt Deutz Ag Schubrostkühler zum Abkühlen von heißem Gut
AU2003263771B2 (en) * 2002-07-10 2008-12-18 Cisco Technology, Inc. System and method for communicating in a load balancing environment
CN105042603A (zh) * 2015-08-31 2015-11-11 衡阳市大成锅炉有限公司 一种生物质锅炉的往复炉排

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3612391A1 (de) * 1986-04-12 1987-10-15 Kablitz Richard Ges Schraegrost fuer feuerungen
FI85420C (fi) * 1987-12-22 1992-04-10 Ahlstroem Oy Anordning vid snedrost i foerbraenningsugns eldstad.
DK168881B1 (da) * 1992-03-25 1994-07-04 Dansk Ind Syndikat Transportør til ny-fremstillede kasseløse støbeforme af sand
JPH08319142A (ja) * 1995-05-25 1996-12-03 Chichibu Onoda Cement Corp 焼塊冷却装置
DE19602621A1 (de) * 1996-01-25 1997-07-31 Krupp Polysius Ag Schubrost zur Behandlung von Schüttgut
KR100226989B1 (ko) * 1996-11-27 1999-10-15 장병주 스토커식 소각로의 화격자 마모 방지 시스템
US6820610B2 (en) 2001-03-15 2004-11-23 Stanley G. Wright Fireplace grate accessory to increase burn time of synthetic log
US6981455B2 (en) * 2002-03-08 2006-01-03 Lefcort Malcolm D Two-stage wet waste gasifier and burner
CN102937374A (zh) * 2012-10-25 2013-02-20 江苏大学 一种复合烧结机炉篦条的制备方法
FR3084444B1 (fr) * 2018-07-27 2020-06-26 Europeenne De Services Techniques Pour L'incineration Procede de midification d'une grille de four d'incineration, elements support de sommier et four d'incineration
DE102018215348A1 (de) * 2018-09-10 2020-03-12 Thyssenkrupp Ag Kühler zum Kühlen von Klinker und Verfahren zum Betreiben eines Kühlers zum Kühlen von Klinker
CN114526486B (zh) * 2022-02-18 2022-12-02 江苏大鸿环保设备有限公司 一种增加生活垃圾进料量的炉排装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2967496A (en) * 1959-11-18 1961-01-10 Earland R Mitchell Stoker grate
US3413938A (en) * 1967-04-12 1968-12-03 Hagan Ind Inc Stoker construction
DE1658591B (de) * 1967-11-17 1970-10-08 Demag Ag, 4100 Duisburg Gleitlager für Brücken od. dgl. Tragwerke
EP0003843A1 (fr) * 1978-02-24 1979-09-05 Josef Martin Feuerungsbau GmbH Surface de grille à gradins entraînée mécaniquement pour des grilles de grands foyers

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3255867A (en) * 1964-02-11 1966-06-14 Kenneth M Allen Pusher conveyors
GB1521376A (en) * 1975-07-04 1978-08-16 Peters Ag Claudius Grate plate
US4201545A (en) * 1977-03-31 1980-05-06 Dieter Riechert Grate with replaceable wear elements
IE49855B1 (en) * 1979-08-10 1985-12-25 Ekman C O A Process and furnace for burning solid fuel
DE3049086C2 (de) * 1980-12-24 1983-07-14 Widmer & Ernst AG, 5430 Wettingen Roststabreihe für Feuerungsroste von Verbrennungsöfen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2967496A (en) * 1959-11-18 1961-01-10 Earland R Mitchell Stoker grate
US3413938A (en) * 1967-04-12 1968-12-03 Hagan Ind Inc Stoker construction
DE1658591B (de) * 1967-11-17 1970-10-08 Demag Ag, 4100 Duisburg Gleitlager für Brücken od. dgl. Tragwerke
EP0003843A1 (fr) * 1978-02-24 1979-09-05 Josef Martin Feuerungsbau GmbH Surface de grille à gradins entraînée mécaniquement pour des grilles de grands foyers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
G. NIEMANN: "Maschinenelemente", Band 1, 2. Auflage, Seiten 320-323, 1975, Springer-Verlag, Berlin, DE; *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU572873B2 (en) * 1983-08-30 1988-05-19 Deutsche Richard Kablitz Gesellschaft Fur Okonomie Der Dampferzeugungskosten Und Feuerungskontrolle Richard Kablitz Gmbh & Co. Kg Inclined grate for furnace
DE4320725A1 (de) * 1993-06-23 1995-01-05 Kloeckner Humboldt Deutz Ag Schubrostkühler zum Abkühlen von heißem Gut
AU2003263771B2 (en) * 2002-07-10 2008-12-18 Cisco Technology, Inc. System and method for communicating in a load balancing environment
CN105042603A (zh) * 2015-08-31 2015-11-11 衡阳市大成锅炉有限公司 一种生物质锅炉的往复炉排
CN105042603B (zh) * 2015-08-31 2017-10-10 衡阳市大成锅炉有限公司 一种生物质锅炉的往复炉排

Also Published As

Publication number Publication date
FI75418C (fi) 1988-06-09
FI842921A (fi) 1985-01-24
FI842921A0 (fi) 1984-07-20
ATE26613T1 (de) 1987-05-15
FI75418B (fi) 1988-02-29
DE3463176D1 (en) 1987-05-21
US4569437A (en) 1986-02-11
DE3326694A1 (de) 1985-01-31
EP0134991B1 (fr) 1987-04-15
CA1224976A (fr) 1987-08-04

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