EP0730722B1 - Grate cooler - Google Patents

Grate cooler Download PDF

Info

Publication number
EP0730722B1
EP0730722B1 EP94927657A EP94927657A EP0730722B1 EP 0730722 B1 EP0730722 B1 EP 0730722B1 EP 94927657 A EP94927657 A EP 94927657A EP 94927657 A EP94927657 A EP 94927657A EP 0730722 B1 EP0730722 B1 EP 0730722B1
Authority
EP
European Patent Office
Prior art keywords
grate
edge
side walls
cooler
duct
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 - Lifetime
Application number
EP94927657A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0730722A1 (en
Inventor
Sigfred Kristian Nielsen
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.)
FLSmidth and Co AS
Original Assignee
FLSmidth and Co AS
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 FLSmidth and Co AS filed Critical FLSmidth and Co AS
Publication of EP0730722A1 publication Critical patent/EP0730722A1/en
Application granted granted Critical
Publication of EP0730722B1 publication Critical patent/EP0730722B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
    • F27D25/008—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag using fluids or gases, e.g. blowers, suction units
    • 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
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0073—Seals

Definitions

  • the present invention relates to a grate cooler for cooling granular material, such as cement clinker or the like, which cooler is of the kind (hereinafter referred to as of the kind described) comprising a grate surface which is made up of a number of, preferably overlapping, rows of grate plates and the longitudinal edges of which are laterally bounded and overlapped by elongate edge guards of angular cross section which are fixed relatively to the side walls in such a way that a gap is provided between each edge guard and the grate plates at the respective edge of the grate surface.
  • EP-A-0378821 discloses such a grate cooler in which the gaps between the edge grate plates of the grate surface and the side walls of the cooler are sealed off by means of angular edge guards.
  • This known grate cooler further comprises a tension arrangement which forces the grate surface in the direction towards the edge guards, thereby ensuring that the gap width is reduced as much as possible commensurate with varying operating conditions.
  • the disadvantage of this known grate cooler is that it has to be shut down for maintenance at relatively frequent intervals. This is owing to the fact that hot and fine clinker material will invariably enter the gap between the grate surface and the edge guards causing such abrasion of the grate plates at the edges of the grate surface as well as of the edge guards that regular replacement of the structural elements is necessary. Subject to wear exposure, there will be an undesirable increase in the gap width during cooler operation, without any possibility of equalizing the gap width by means of the tightening device, since the abrasion is not uniform.
  • a grate cooler of the kind described which is characterised in that a hollow duct is provided extending along each side wall adjacent to the respective edge guard and is arranged to be connected to an air supply source; and in that each edge guard is formed with through-going passages which open at the gap and are connected to the interior of the duct so that air may be injected into the gaps between the edge guards and the adjacent grate plates.
  • each passage extends to a surface of its edge guard facing the duct where the passage is connected via a respective hole in the duct to the interior of the duct.
  • At least some of the passages may open at the underside of the overlapping part of the edge guard but at least some of the ducts may equally well open near to the top of a vertical part of the edge guard which bounds the grate surface.
  • the hollow ducts may be built into the side walls of the cooler, in a second embodiment they may be mounted on the side walls between the latter and the edge guards, whereas in a third embodiment they may be mounted resting on transverse beams.
  • Fig. 1 shows a sectional view of a grate cooler 1 which comprises side walls 3 and a grate bottom or grate surface 5 upon which material 7, to be cooled, is conveyed.
  • the grate surface 5 is made up of rows of overlapping grate plates 9, each of which comprises through-going slits or holes, not shown, for injection of cooling air into the material 7 on the grate surface 5.
  • the cooling air may, as shown on the drawing, be supplied to the grate plates 9 in groups via an underlying system of air supply ducts 11.
  • the grate surface 5 is bounded and overlapped at its longitudinal edges by angular edge guards 13 of L-shaped cross section, which, in the shown embodiment, are fixed directly to the side walls 3 of the cooler.
  • Grate coolers are typically designed with a number of rows of grate plates which are capable of reciprocating movement in the longitudinal direction of the cooler, hence providing for a material conveyance through the cooler, and, as a consequence hereof, the guards 13 do not fit closely against the grate plates 9 at the edges of the grate surface, but instead forming in conjunction with these plates fine gaps 15.
  • a hollow duct 16 extending in the longitudinal direction of the cooler and being connected to an air supply source, not shown, is mounted at each of the side walls 3 of the cooler and at substantially the same level as the guards 13.
  • the guards 13 are formed with throughgoing passages 17, each being connected via a hole 19 in the duct 16 to the interior of the duct and hence the air supply source, and terminating at the gap 15, either at the underside of the overlapping part 21 of the guard or adjacent to the top of the vertical part of the guard 13.
  • gaps 15 can be kept clean of material by injecting air through the passages 17.
  • the hollow ducts 16 are built into the side walls 3 of the cooler, in Fig. 3 they are mounted on the side walls 3 between the latter and the edge guards 13, and in Fig. 4 they are mounted resting on transverse beams 23 extending between the side walls 3 of the cooler.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
EP94927657A 1993-10-06 1994-09-27 Grate cooler Expired - Lifetime EP0730722B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DK112093 1993-10-06
DK1120/93 1993-10-06
DK112093A DK171924B1 (da) 1993-10-06 1993-10-06 Ristkøler
PCT/EP1994/003230 WO1995010014A1 (en) 1993-10-06 1994-09-27 Grate cooler

Publications (2)

Publication Number Publication Date
EP0730722A1 EP0730722A1 (en) 1996-09-11
EP0730722B1 true EP0730722B1 (en) 1998-04-22

Family

ID=8101237

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94927657A Expired - Lifetime EP0730722B1 (en) 1993-10-06 1994-09-27 Grate cooler

Country Status (6)

Country Link
EP (1) EP0730722B1 (zh)
CN (1) CN1132551A (zh)
BR (1) BR9407756A (zh)
DE (1) DE69409826D1 (zh)
DK (1) DK171924B1 (zh)
WO (1) WO1995010014A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA969708B (en) * 1995-12-15 1997-06-20 Krupp Polysius Ag Prevention of snowmen and removal of lumps in clinker coolers
DE102004051699A1 (de) * 2003-12-19 2005-07-14 Khd Humboldt Wedag Ag Regelungsvorrichtung für die Kühlluftzuströmungen eines Schüttgutrostkühlers
EP1887302A1 (de) 2006-08-10 2008-02-13 Claudius Peters Technologies GmbH Kühler für Schüttgut mit einer Abdichteinrichtung zwischen benachbarten Förderplanken
CN101865607A (zh) * 2010-07-27 2010-10-20 天津水泥工业设计研究院有限公司 一种水泥熟料篦式冷却机侧充气盲板
BE1027670B1 (de) * 2019-10-14 2021-05-12 Thyssenkrupp Ind Solutions Ag Kühler zum Kühlen von Schüttgut

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU425243B2 (en) * 1967-01-16 1972-06-21 Ing. Johannes Josef Martin Dr. Improvements in or relating to multiple section grates
DE2021482C3 (de) * 1970-05-02 1974-09-26 Claudius Peters Ag, 2000 Hamburg Überbrückungsplatte für einen Kühlrost
US3824071A (en) * 1973-07-30 1974-07-16 Reserve Mining Co Furnace pallet
DE3844493C1 (zh) * 1988-12-30 1990-08-23 Karl Von Dipl.-Ing. 3057 Neustadt De Wedel
DE4136934C2 (de) * 1991-11-11 2001-03-29 Deutz Ag Schubrostkühler zum Abkühlen von heißem Gut

Also Published As

Publication number Publication date
WO1995010014A1 (en) 1995-04-13
EP0730722A1 (en) 1996-09-11
BR9407756A (pt) 1997-03-04
CN1132551A (zh) 1996-10-02
DK112093A (da) 1995-04-07
DK112093D0 (da) 1993-10-06
DE69409826D1 (de) 1998-05-28
DK171924B1 (da) 1997-08-11

Similar Documents

Publication Publication Date Title
KR100479429B1 (ko) 미립자로 된 재료용 냉각기
EP0676031B1 (en) Cooler for cooling particulate material
US6634490B2 (en) Roller bed for a conveyor belt system
US7484957B2 (en) Bulk material cooler for cooling hot materials to be cooled
CA1082623A (en) Conveyor skirt board and holder
EP0730722B1 (en) Grate cooler
US5713345A (en) Grate element
EP0337383A1 (de) Kühlerrostplatte
US7219610B2 (en) Grate plate arrangement for step plates
US5788480A (en) Grate element
US4592724A (en) Grate cooler and method of cooling
US9903657B2 (en) Device for treating, in particular cooling, bulk material using a gas
US5766001A (en) Grate element for a grate surface, e.g. in a clinker cooler
US3841829A (en) Traveling grate for heat treating materials
JPH0820419A (ja) ベルトコンベアにおける荷受部設置用スカート及び荷こぼれ等の防止装置
WO1994008187A1 (en) Grate element for a grate surface
JPH09241049A (ja) 焼塊冷却装置
JPH09235149A (ja) クリンカ冷却装置及び該装置用グレートプレート
JPH09196571A (ja) 焼結機パレットの片寄り防止構造

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

17P Request for examination filed

Effective date: 19960426

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB GR IT PT

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19970724

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB GR IT PT

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;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: 19980422

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980422

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19980422

ET Fr: translation filed
REF Corresponds to:

Ref document number: 69409826

Country of ref document: DE

Date of ref document: 19980528

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

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980722

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980723

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: 19980927

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

Effective date: 19980927

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: 19990531

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST