EP0019938A1 - Grille coulissante - Google Patents

Grille coulissante Download PDF

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Publication number
EP0019938A1
EP0019938A1 EP80103103A EP80103103A EP0019938A1 EP 0019938 A1 EP0019938 A1 EP 0019938A1 EP 80103103 A EP80103103 A EP 80103103A EP 80103103 A EP80103103 A EP 80103103A EP 0019938 A1 EP0019938 A1 EP 0019938A1
Authority
EP
European Patent Office
Prior art keywords
grate
web
grate plate
slot
hook
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
EP80103103A
Other languages
German (de)
English (en)
Other versions
EP0019938B1 (fr
Inventor
Otto Heinemann
Heinz-Herbert Schmits
Rainer Philipp
Artur Berger
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Krupp Polysius AG
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 Krupp Polysius AG filed Critical Krupp Polysius AG
Priority to AT80103103T priority Critical patent/ATE1872T1/de
Publication of EP0019938A1 publication Critical patent/EP0019938A1/fr
Application granted granted Critical
Publication of EP0019938B1 publication Critical patent/EP0019938B1/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
    • 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
    • F27B21/02—Sintering grates or tables
    • 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
    • F27D15/022—Cooling with means to convey the charge comprising a cooling grate grate plates

Definitions

  • the invention relates to a sliding grate containing overlapping, alternatingly fixed and reciprocating in the longitudinal direction of the sliding grate grate plates serving to hold the grate plates, provided with a slit-like recess grate plate support, through the slit-like recess of the grate plate support, with one end in the associated grate plate suspended traction elements and spring elements arranged between the other end of the traction elements and a web of the grate plate support containing the slot-like recess for prestressing the connection between the grate plates and the grate plate supports.
  • Push grates are used for the reception and transport of various pourable materials that can be treated in different ways, for example cool material can be treated with hot treatment gases or hot material with cool treatment gases.
  • the aim is to keep the wear, the heat development and the effort required for the moving grating as low as possible. For this reason, special attention is paid to the attachment of the grate plates on the grate plate supports, care must be taken that the grate plates are removable and interchangeable, but at the same time have to be firmly connected to the grate plate support; In addition, the replacement of individual grate plates should be ensured without dismantling the neighboring grate plates.
  • the invention is therefore based on the object of providing a sliding grate of the type mentioned which ensures reliable fastening of the grate plates to the associated grate plate support at all times, in particular even in the event of excessive elongation or breakage of the spring elements.
  • the traction element of a grate plate should expand in length due to excessive heat
  • this change in length can initially be compensated for by the associated spring element; in the case of greater elongation, the tension member can pivot due to its own weight around the attachment point on the grate plate, as a result of which the point of application of the other end of the tension member (with the spring element) shifts along the slot-like recess due to the inclination of the web so that the tension member again secures the attachment of the grate plate .
  • the sliding grate usually has several (in this case three) scale-overlapping grate plates 1, which are fastened to a grate plate support 2, with several such grate plates 1 lying one behind the other in a row in the transverse direction of the sliding grate (perpendicular to the plane of the drawing) the corresponding grate plate carrier 2 can be attached.
  • the grate plates 1 are alternately fixed and can be moved back and forth in the longitudinal direction of the grate, which can be done with the aid of the grate plate support 2.
  • the individual grate plates 1 can also be supported in the usual way via ribs 3 or the like on the associated grate plate supports 2.
  • a grate element 4 designed as a draw bolt 4 is provided for each grate plate 1.
  • the upper end 4a of the tension bolt 4 is hooked into a hook 5 projecting downward from the underside of the grate plate 1 and thereby engages through a slot-like recess 6 which is incorporated in a web 7 of the grate plate carrier 2.
  • a compression spring 10 with the interposition of lock nuts 8 and washers 9a and 9b arranged, which serves to brace the connection between the respective grate plate 1 and the associated grate plate carrier 2.
  • the grate plate carrier 2 shown in cross section has two, in this case, approximately vertical, spaced apart and parallel to one another horizontal struts 11, 12, while the web 7, which contains the slot-like recess 6, is arranged inclined with respect to the horizontal, this web 7 - seen in the cross-sectional view in FIG. 2 - with its ends on the one hand with the strut 11 and on the other hand with the strut 12 is integrally connected.
  • the web 7 is inclined downward in the material conveying direction (arrow 13); this inclination runs at an angle ⁇ with respect to the horizontal, which is between approximately 5 and 45 °, but preferably between 20 and 30 °.
  • the slot-shaped recess 6 also runs in the direction of this web inclination and is designed as a closed elongated hole, the width of which allows the pull bolt 4 to be pushed through.
  • the arrangement of the web 7 and in particular the position of the elongated hole 6 are selected such that the hanging point 14 of the tension bolt 4 on the grate plate 1 is at a greater distance from the lower end 6a than from the higher end 6b of the elongated hole 6.
  • the pull bolt 4 will be located with its point of engagement A on the web 7 in the region of the higher elongated hole end 6b (for example as shown in FIG. 2). If, due to thermal expansion, the draw bolt 4 is excessively elongated, then the draw bolt 4, which hangs obliquely with respect to the vertical, will shift from its position shown in FIG. 2 in the direction of arrow 15 due to its own weight to the right until its point of attack A is again in engagement with the web 7, whereby this attachment of the grate plate 1 then automatically remains secured; during this shift, the tension bolt 4 performs a pivoting movement in the suspension point 14 (in the direction of the arrow 15).
  • This self-locking cannot be released by strong movements of the grate plate 1 either in the vertical or in the horizontal direction; rather, it tends to tighten even more due to shaking, vibrations, etc.
  • the fastening can only be loosened or loosened by loosening the lock nuts 8 on the draw bolt end 4b.
  • the provided on the underside of the grate plate 1, projecting down hook 5 can be carried out in any appropriate manner and adapted to the upper hanging end 4a of the draw bolt 4.
  • Example a simple hook could be provided, in which the hook-shaped or loop-shaped hooking end of the pull bolt engages.
  • the hook 5 is, however, designed as a double hook with two hook parts arranged parallel and at a distance from one another (one behind the other perpendicular to the drawing plane of FIG. 2), while the tension bolt has a T-shape, as indicated in FIG. 2 by a dash-dotted line , transverse end piece 4c 'has been indicated.
  • This draw bolt 4 lies on the one hand with its hooking end 4a between the two hook parts, and on the other hand the transverse end piece 4a 'engages in the two hook parts of the hook 5, so that this end piece 4c' lies on the hooking point 14 of the hook 5.
  • the hook 5 is open in the direction of the web inclination - that is, in the direction of the arrow 13 - and that the free end 5a of the hook 5 is somewhat higher than the deepest hook-in surface of the hook for the draw bolt hooking end 4a, this hooking surface being essentially defined by the hooking point 14.
  • FIG. 3 A second exemplary embodiment of the grate plate attachment is shown in FIG. 3.
  • the elements of the sliding grate which are configured in the same way, for example in FIGS. 1 and 2, are designated by the same reference numerals with the addition of a dash.
  • each grate plate carrier 20 differs from the design of each grate plate carrier 20, but in particular in the design and arrangement of its web 21; the struts 22 and 23 connected by the web 21, on the other hand, can be designed and arranged in the same way as the struts 11 and 12 in FIGS. 1 and 2.
  • each grate plate carrier 20 is essentially also inclined at an angle between approximately 5 and 45 °, preferably 20 and 30 °, but this inclination does not run - as in the example in FIG. 1 and 2 - in a straight line, but this inclined web 21 ends with a concavity relative to the attachment point 14 'of the tension bolt 4', as is clearly shown in this FIG.
  • This curvature has - on its lower, outer Side - a radius R, which can be up to four times as large as the theoretical pendulum radius R of the draw bolt 4, starting point A 'of the draw bolt 4' on the web 21 in the direction of the suspension point 14 '.
  • the center M of the curvature is preferably on a straight line 24 which is at an angle ⁇ between 2 and 10 °, preferably about 5 °, with respect to the center bolt axis 25 in the direction of the grate plate conveying edge 1'a or in the material transport direction ( Arrow 13 ') is inclined.
  • the radius of curvature R is approximately 1.5 to 2 times the value of the theoretical pendulum radius R, which - as shown in FIG. 3 - approximately the dimension from the pivot point at the hanging end 4a 'of the tension bolt 4' to Point of attack A 'of the draw bolt 4' on the web 21.
  • the type of curvature of the web 21 results in a particularly sensitive and reliable self-locking of the ones provided here Fastening, at the same time a reliable holding of the draw bolt hanging end 4a 'is guaranteed on the hanging point 14' of the hook 5 '.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Incineration Of Waste (AREA)
  • Massaging Devices (AREA)
  • Furnace Details (AREA)
  • Braking Arrangements (AREA)
  • Baking, Grill, Roasting (AREA)
  • Crushing And Grinding (AREA)
  • Preparation Of Fruits And Vegetables (AREA)
  • Finger-Pressure Massage (AREA)
  • Clamps And Clips (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Valve Device For Special Equipments (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Connection Of Plates (AREA)
EP80103103A 1979-07-26 1980-06-04 Grille coulissante Expired EP0019938B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80103103T ATE1872T1 (de) 1979-07-26 1980-06-04 Schubrost.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2930406 1979-07-26
DE19792930406 DE2930406A1 (de) 1979-07-26 1979-07-26 Schubrost

Publications (2)

Publication Number Publication Date
EP0019938A1 true EP0019938A1 (fr) 1980-12-10
EP0019938B1 EP0019938B1 (fr) 1982-11-24

Family

ID=6076877

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80103103A Expired EP0019938B1 (fr) 1979-07-26 1980-06-04 Grille coulissante

Country Status (7)

Country Link
US (1) US4350244A (fr)
EP (1) EP0019938B1 (fr)
AT (1) ATE1872T1 (fr)
BR (1) BR8004480A (fr)
DE (2) DE2930406A1 (fr)
ES (1) ES491780A0 (fr)
ZA (1) ZA802906B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538888A1 (fr) * 1982-12-30 1984-07-06 Ugine Aciers Element de grille en metal moule pour echange de chaleur solide-fluide a tres haute temperature, comportant un dispositif d'accrochage integre a la structure de grille
EP0260432A2 (fr) * 1986-09-19 1988-03-23 Krupp Polysius Ag Dispositif d'entraînement d'un refroidisseur à grille mobile
DE3844493C1 (fr) * 1988-12-30 1990-08-23 Karl Von Dipl.-Ing. 3057 Neustadt De Wedel
US20220252261A1 (en) * 2019-10-29 2022-08-11 Alite Gmbh Grate Bar for Stepped Grate

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2543116B1 (fr) * 1983-03-24 1985-07-26 Gatx Fuller Sa Plaque pour transporteur du type oscillant et transporteur correspondant
DE4441009C2 (de) * 1994-11-17 2001-03-29 Karl Von Wedel Rostplattenanordnung
DE10017324A1 (de) * 2000-04-10 2001-10-18 Bmh Claudius Peters Gmbh Verfahren und Vorrichtung zum Transport von Zementklinker
CN101876442B (zh) * 2010-08-06 2012-03-07 无锡华光锅炉股份有限公司 炉排侧梁的安装结构
DE102012009511B4 (de) * 2012-05-14 2013-12-19 Outotec Oyj Rostwagen zur Aufnahme von Schüttgut

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB206402A (en) * 1922-12-28 1923-11-08 Babcock & Wilcox Dampfkessel Improvements in step grates for boiler furnaces
DE461849C (de) * 1928-06-28 Vesuvio Feuerungsbau Ges M B H Unterwindfeuerung mit bewegten Rostteilen
DE1134329B (de) * 1961-01-02 1962-08-02 Peters Ag Claudius Stufen-Rostkuehler, insbesondere Vorschubstufenrostkuehler
DE2000631A1 (de) * 1969-01-13 1970-07-23 Fuller Co Waermeaustauschvorrichtung
DE1751126A1 (de) * 1968-04-06 1971-05-06 Martin Joh Jos Dr Ing Rost fuer Grossfeuerungen
DE1751084B2 (de) * 1968-03-30 1971-06-24 Peters Ag Claudius Befestigungsanordnung fuer eine Rostplatte
DE1258541B (fr) * 1965-04-29 1973-09-20
FR2277314A1 (fr) * 1974-07-06 1976-01-30 Peters Ag Claudius Grille coulissante

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2431799A (en) * 1945-11-08 1947-12-02 Fuller Co Cooler having overlapping replaceable grates
US4200047A (en) * 1977-04-01 1980-04-29 Claudius Peters Ag Two part grate for stokers with reciprocating grate plates

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE461849C (de) * 1928-06-28 Vesuvio Feuerungsbau Ges M B H Unterwindfeuerung mit bewegten Rostteilen
GB206402A (en) * 1922-12-28 1923-11-08 Babcock & Wilcox Dampfkessel Improvements in step grates for boiler furnaces
DE1134329B (de) * 1961-01-02 1962-08-02 Peters Ag Claudius Stufen-Rostkuehler, insbesondere Vorschubstufenrostkuehler
DE1258541B (fr) * 1965-04-29 1973-09-20
DE1751084B2 (de) * 1968-03-30 1971-06-24 Peters Ag Claudius Befestigungsanordnung fuer eine Rostplatte
DE1751126A1 (de) * 1968-04-06 1971-05-06 Martin Joh Jos Dr Ing Rost fuer Grossfeuerungen
DE2000631A1 (de) * 1969-01-13 1970-07-23 Fuller Co Waermeaustauschvorrichtung
FR2277314A1 (fr) * 1974-07-06 1976-01-30 Peters Ag Claudius Grille coulissante

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538888A1 (fr) * 1982-12-30 1984-07-06 Ugine Aciers Element de grille en metal moule pour echange de chaleur solide-fluide a tres haute temperature, comportant un dispositif d'accrochage integre a la structure de grille
EP0115242A1 (fr) * 1982-12-30 1984-08-08 Ugine Savoie Elément de grille en métal moulé pour échange de chaleur solide-fluide à très haute température, comportant un dispositif d'accrochage intégré à la structure de grille
EP0260432A2 (fr) * 1986-09-19 1988-03-23 Krupp Polysius Ag Dispositif d'entraînement d'un refroidisseur à grille mobile
EP0260432A3 (fr) * 1986-09-19 1990-02-07 Krupp Polysius Ag Dispositif d'entraínement d'un refroidisseur à grille mobile
DE3844493C1 (fr) * 1988-12-30 1990-08-23 Karl Von Dipl.-Ing. 3057 Neustadt De Wedel
US20220252261A1 (en) * 2019-10-29 2022-08-11 Alite Gmbh Grate Bar for Stepped Grate
US11815265B2 (en) * 2019-10-29 2023-11-14 Ikn Gmbh Grate bar for stepped grate

Also Published As

Publication number Publication date
ATE1872T1 (de) 1982-12-15
ES8101247A1 (es) 1980-12-16
ES491780A0 (es) 1980-12-16
ZA802906B (en) 1981-07-29
DE2930406A1 (de) 1981-02-12
BR8004480A (pt) 1981-01-27
EP0019938B1 (fr) 1982-11-24
DE3061146D1 (en) 1982-12-30
US4350244A (en) 1982-09-21

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