EP0499910A2 - Grille de foyer - Google Patents

Grille de foyer Download PDF

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Publication number
EP0499910A2
EP0499910A2 EP92102121A EP92102121A EP0499910A2 EP 0499910 A2 EP0499910 A2 EP 0499910A2 EP 92102121 A EP92102121 A EP 92102121A EP 92102121 A EP92102121 A EP 92102121A EP 0499910 A2 EP0499910 A2 EP 0499910A2
Authority
EP
European Patent Office
Prior art keywords
grate
carriage
firing
furnace
grate according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP92102121A
Other languages
German (de)
English (en)
Other versions
EP0499910A3 (en
EP0499910B1 (fr
Inventor
Friedrich Krieger
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.)
Noell KRC Energie und Umwelttechnik GmbH
Original Assignee
Noell Abfall- und Energietechnik 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6425507&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0499910(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Noell Abfall- und Energietechnik GmbH filed Critical Noell Abfall- und Energietechnik GmbH
Publication of EP0499910A2 publication Critical patent/EP0499910A2/fr
Publication of EP0499910A3 publication Critical patent/EP0499910A3/de
Application granted granted Critical
Publication of EP0499910B1 publication Critical patent/EP0499910B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H17/00—Details of grates
    • 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

Definitions

  • the invention relates to a grate for a combustion furnace.
  • Firing grates of this type generally consist of horizontal or obliquely arranged rows of grate bars one behind the other in the manner of a roof tile, of which, for example, every second row is assigned a drive for moving the combustion material and for improving the stoking effect.
  • the movement of the grate bar rows essentially takes place in that several rows of grate bars are combined and actuated by a single drive.
  • Such a grate is known from DE-C 24 46 724, in which a cylinder arranged behind a slide moves the slide, on which several movable grate bar rows sit on grate bar supports, in the feed direction of the grate bar rows.
  • the arrangement of the drives and movement elements in the underwind area below the firing grate level is problematic because there they are subject to increased susceptibility to faults due to the firing temperature and the possible diarrhea of fired material between the grate bars. This affects the operational safety of such drives, which cannot be checked or serviced in this underwind area as long as the furnace is in operation.
  • the invention is therefore based on the problem of proposing a firing grate for an incinerator in which the number of sliding points is reduced to a minimum and these should all be arranged outside the underwind area if possible.
  • the invention is characterized by a furnace grate for incinerators, in particular for the incineration of waste consisting of rows of grate bars one behind the other in the manner of roof tiles Grate bar supports, each second of which is mounted on a movable carriage, while the remaining grate bar supports are stationary, and this carriage has a movement drive which is located outside the downwind area of the firing grate and which consists, for example, of hydraulic cylinders which are coupled to an axis which moves the carriage, and wherein the axis protrudes through a slot seal in the furnace wall. It is important that all drive elements can act in the feed direction of the grate bars so that no pivot bearings are required. Such an arrangement outside the underwind area is advantageous because practically any contamination of the drive elements is excluded and the few movable drive elements of the carriage that are still present can be checked and serviced outside the furnace space.
  • a slot seal which consists of a disc sealed on the axis, which in turn lies between two side guides inside a housing on the wall of the furnace.
  • the side guides can be formed as a flat seal for the disc.
  • Flat gaskets have proven themselves and can be designed to be fault-free.
  • the space between, for example, the outer flat seals, that is, around the pane can also be supplied with sealing air. This ensures that no dust or similar from the Area under the firing grate can penetrate into the slot seal and eventually escape to the outside.
  • roller conveyor In continuation of the inventive concept, the axis outside the underwind area in a web guide, z. B. roller conveyor, stored.
  • This roller conveyor can be covered according to the invention by a steel belt roller blind.
  • roller conveyor guides and steel belt roller blinds have proven themselves in rough operation and also ensure reliable guidance of the carriage axis.
  • the grate bars wear on their top and base surfaces after a long furnace journey. This could result in a non-linear feed movement of the grate bar at a constant drive point, which can be compensated for by a height adjustment - taking into account the angular position of the roller conveyor guide. In the simplest case, this height adjustment can consist of additional sheets under the bearing block of the guide. It can even be set before commissioning the grate in such a way that a medium feed direction is selected in accordance with the planned duration of the furnace journey and the resulting wear on the grate bars.
  • the invention provides several methods of supporting the torque that acts on the carriage from the drive.
  • a non-driven axis parallel to the drive axis can be provided, that connects both sides of the car and is mounted on one side outside the underwind area; or it is only possible to use a larger, torsionally stiff, driven axle connecting both sides of the wagon, if possible, which is connected to a gusset plate on at least one wagon side outside the underwind area, which is guided by double roller bearings or plain bearings encompassing the web guides on all sides becomes.
  • short carriage axles can only be connected to the side bolsters of the carriage without the drive axle connecting both sides of the carriage. This design can be used if only low torsional forces occur.
  • the side bolsters of the car are then only connected to one another by the grate bar supports.
  • the number of wear points has been reduced compared to the prior art to only 16 or 24 elements, depending on the type of torque arm used, with the same length of the grate.
  • Figure 1 shows a plan view of a movable carriage (2).
  • the grate bars (12) (Fig. 2) rest on movable grate bar supports (1) of the carriage (2).
  • the carriage (2) has a non-driven axle (3) which is held on one side outside the combustion chamber (4) and the furnace wall (5) in the bearing block (6).
  • the carriage (2) has a driven axle (7) on both sides of the carriage (2) outside the furnace walls (5) stored in roller conveyor guides (8) and moved by cylinders (9).
  • the openings in the furnace wall (5) are closed on each axis with slot seals (10). Cylinder (9) and roller conveyor guide (8) and the grate bars (12) lie in one direction of action. It follows that the slot seal (10) is movable in the effective direction.
  • FIG. 2 shows the furnace frame (17) made of steel beams to which the furnace wall (5) is fixed, which delimits the furnace.
  • Grate bar supports (12) are arranged on the carriage (2), driven by axis (7) and additionally guided by axis (3).
  • Additional grate bars (19) are arranged on stationary grate bar supports (20) - not mounted on the carriage (2).
  • the cylinder (9) moves the axle (7) of the carriage, which rests in the bearing block (6) which is guided in the direction of movement of the movable grate bars (12) by the roller conveyor guide (8) arranged on the height-adjustable block (21).
  • the axes (3, 7) pass through a slot seal (10) on the furnace wall (5).
  • FIG 3 shows the axis (7) of the carriage (2) on which a disc (11) of the slot seal (10) according to section BB in Figure 1 is arranged.
  • the washer (11) is mounted so that it can move longitudinally between flat seals (13).
  • This labyrinth-like sealing system is enclosed by a tight housing (14) with a lid (15) and held by screw connections (16).
  • the housing has a sealing air connection (18), which the space in the housing (14) outside of the flat seals (13) and the disc (11) with sealing air.
  • the housing (14) of the slot seal is attached to the furnace wall (5).
  • the disc (11) On the floating bearing side of the carriage, the disc (11) is provided with a seal (22) to the axis (7) so that the axis (7) can expand due to the heat, without exerting pressure on the flat seals (13).
  • Figure 4 shows a side view of a sectioned axis (23) of a carriage, not shown.
  • the axis (23) is designed as a torsionally rigid tube to which a gusset plate (24) is welded.
  • the slot seal (25) is designed in the manner described in Figure 3.
  • Upper and lower roller bearings (28), (38) and (29, 39) are arranged on the gusset plate (24) and the flanged bearing plate (31), which are supported on the roller track guide (27) on the bearing block (30) . Due to the offset of the bearing points relative to the axis (23) of the carriage, the gusset plate (24) acts like a torque arm.
  • Figure 5 shows according to section CC in Figure (4) schematically a bearing on the roller conveyor guide (27), which is connected by means of screw (33) and centering bar (32) to the bearing block (30).
  • the gusset plate (24) is welded to the axis (23); in front of which the bearing plate (31) is held by screwing (34).
  • the storage is designed as a fixed bearing.
  • FIG. 6 schematically represents another carriage according to the invention, the cheeks (41, 42) and center support (43) of which are arranged on the drive axle (44) designed as a tube.
  • the movable grate bar supports (45) for the grate bars (46) lie on the cheeks (FIG. 7).
  • a torsionally rigid fixed bearing (47) on the one hand and a floating bearing (48) on the other hand allow the drive axis (44) to move in path guides, as described in the previous figures.
  • Slot seals (49, 50) seal the bearings from the downwind area of the furnace.
  • FIG. 7 shows a schematic section along the drive axis (44) through the carriage according to FIG. 6.
  • the position of the movable grate bar supports (45) with the grate bars (46) placed on them is illustrated.
  • FIG. 8 schematically shows a further carriage according to the invention, the side walls (51, 52) of which each have a drive axle stub (53, 54) which is guided through the slot seal (59, 60) on the furnace wall and held in bearings (57, 58) .
  • the stub axles (53, 54) are mounted analogously to the illustration in FIG. 4.
  • the side cheeks (51, 52) of the carriage are connected to one another only by stable grate bar supports (55) on which the grate bars (56) are mounted, as shown in FIG.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Baking, Grill, Roasting (AREA)
EP92102121A 1991-02-18 1992-02-08 Grille de foyer Expired - Lifetime EP0499910B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4105328A DE4105328C1 (fr) 1991-02-18 1991-02-18
DE4105328 1991-02-18

Publications (3)

Publication Number Publication Date
EP0499910A2 true EP0499910A2 (fr) 1992-08-26
EP0499910A3 EP0499910A3 (en) 1993-01-13
EP0499910B1 EP0499910B1 (fr) 1995-09-27

Family

ID=6425507

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92102121A Expired - Lifetime EP0499910B1 (fr) 1991-02-18 1992-02-08 Grille de foyer

Country Status (5)

Country Link
US (1) US5269287A (fr)
EP (1) EP0499910B1 (fr)
KR (1) KR100200406B1 (fr)
DE (2) DE4105328C1 (fr)
ES (1) ES2079704T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4421552A1 (de) * 1994-01-24 1995-07-27 Krupp Polysius Ag Schubrostkühler

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5971949A (en) 1996-08-19 1999-10-26 Angiosonics Inc. Ultrasound transmission apparatus and method of using same
US6241703B1 (en) 1996-08-19 2001-06-05 Angiosonics Inc. Ultrasound transmission apparatus having a tip
DE10137520B4 (de) * 2001-08-01 2004-05-13 Martin GmbH für Umwelt- und Energietechnik Rostfeuerung
US8051786B2 (en) * 2002-10-02 2011-11-08 Chengguo Ma Stoker grates for circulating combustible material
CN2573878Y (zh) * 2002-10-02 2003-09-17 马成果 一种循环燃烬炉排
DE10305994A1 (de) * 2003-02-12 2004-09-02 Ralf Paulsen Vorrichtung und Verfahren zum Transport eines Brennstoffes
CN100504171C (zh) * 2006-07-12 2009-06-24 付加强 排式螺旋送煤燃烧装置
IT1396788B1 (it) * 2009-11-26 2012-12-14 Tm E S P A Termomeccanica Ecologia Impianto di smaltimento rifiuti provvisto di telaio modulare.
KR20130040239A (ko) * 2010-07-30 2013-04-23 도이코스 인베스트먼츠 리미티드 평행한 드라이브를 구비하는 수냉식 슬라이딩 연소 화격자
CN101922715B (zh) * 2010-09-01 2011-12-14 重庆科技学院 两段式垃圾焚烧炉

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE450676C (de) * 1926-01-19 1927-10-13 Vesuvio Feuerungsbau G M B H Stufenrost mit bewegten Stufen
CH352283A (de) * 1956-01-20 1961-02-15 Smidth & Co As F L Verfahren und Vorrichtung zum Fördern und gleichzeitigen Erwärmen oder Kühlen von Massengut
US3126846A (en) * 1964-03-31 Incinearator grate
FR2304859A1 (fr) * 1975-03-17 1976-10-15 Von Roll Ag Grille a avance pour incinerateurs

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3373618A (en) * 1965-08-12 1968-03-19 Riley Stoker Corp Drive for stoker
CH567230A5 (fr) * 1973-10-08 1975-09-30 Kuenstler Hans
US4102449A (en) * 1976-09-10 1978-07-25 United States Steel Corporation Walking beam conveying apparatus and method
CH637198A5 (de) * 1979-03-14 1983-07-15 Widmer & Ernst Ag Feuerungsrost fuer verbrennungsoefen.
FR2614395B1 (fr) * 1987-04-27 1989-07-21 Traitement Indl Residus Urbain Foyer de chaudiere, notamment pour dechets urbains, a grille composee de barreaux alternativement fixes et mobiles a va-et-vient, a souplesse de reglage accrue
US4895084A (en) * 1987-12-18 1990-01-23 Morse Boulger, Inc. Stoker for refuse incinerators

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126846A (en) * 1964-03-31 Incinearator grate
DE450676C (de) * 1926-01-19 1927-10-13 Vesuvio Feuerungsbau G M B H Stufenrost mit bewegten Stufen
CH352283A (de) * 1956-01-20 1961-02-15 Smidth & Co As F L Verfahren und Vorrichtung zum Fördern und gleichzeitigen Erwärmen oder Kühlen von Massengut
FR2304859A1 (fr) * 1975-03-17 1976-10-15 Von Roll Ag Grille a avance pour incinerateurs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4421552A1 (de) * 1994-01-24 1995-07-27 Krupp Polysius Ag Schubrostkühler

Also Published As

Publication number Publication date
US5269287A (en) 1993-12-14
EP0499910A3 (en) 1993-01-13
DE4105328C1 (fr) 1992-11-19
ES2079704T3 (es) 1996-01-16
KR100200406B1 (ko) 1999-06-15
KR920016771A (ko) 1992-09-25
EP0499910B1 (fr) 1995-09-27
DE59203784D1 (de) 1995-11-02

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