DE19954683A1 - Grate cooler has above cool grate, tubular shafts spaced apart and transverse to cold goods' transport direction with distributed projecting cams around periphery - Google Patents

Grate cooler has above cool grate, tubular shafts spaced apart and transverse to cold goods' transport direction with distributed projecting cams around periphery

Info

Publication number
DE19954683A1
DE19954683A1 DE1999154683 DE19954683A DE19954683A1 DE 19954683 A1 DE19954683 A1 DE 19954683A1 DE 1999154683 DE1999154683 DE 1999154683 DE 19954683 A DE19954683 A DE 19954683A DE 19954683 A1 DE19954683 A1 DE 19954683A1
Authority
DE
Germany
Prior art keywords
grate
cooling
tubular shafts
cooler
goods
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.)
Withdrawn
Application number
DE1999154683
Other languages
German (de)
Inventor
Johann-Claude Rosen
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.)
KHD Humboldt Wedag AG
Original Assignee
KHD Humboldt Wedag 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 KHD Humboldt Wedag AG filed Critical KHD Humboldt Wedag AG
Priority to DE1999154683 priority Critical patent/DE19954683A1/en
Publication of DE19954683A1 publication Critical patent/DE19954683A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02Cooling
    • F27D15/0206Cooling with means to convey the charge
    • F27D15/0213Cooling with means to convey the charge comprising a cooling grate
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00Charging; Discharging; Manipulation of charge
    • F27D2003/0034Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0083Means for stirring the charge
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D9/00Cooling of furnaces or of charges therein
    • F27D2009/007Cooling of charges therein
    • F27D2009/0094Cooling of charges therein making use of already cooled material, e.g. forming a layer

Abstract

A grate cooler has a cool grate (12) flowed through by cold gas over which the cold goods to be cooled, like hot cement clinker, can be moved. Above the cool grate are located tubular shafts (15), spaced apart and transverse to the cold goods' transport direction. They have distributed projecting cams (16) around the shaft periphery. The tubular shafts can be driven in the direction of rotation that the cams rotating with the tubular shafts might move the cold goods from the cool grate start to the cool grate end. The tubular shafts can be flowed through by a cooling medium (17) that emerges into the cold goods' bed through openings distributed over the shaft periphery and effects an additional bed cooling.

Description

The invention relates to a grate cooler with one of cooling gas flowed cooling grate, over which the items to be cooled, such. B. hot cement clinker, is movable.

Grate coolers are used in the stone and earth industry the goods previously burned in an oven such as B. cement clinker or other mineral goods immediately afterwards on the refrigerator cool down rust strongly. In order to transport the hot one to be cooled Chilled goods over the cooling section are next to traveling grate coolers especially the thrust grate cooler, where the Rostsy stem from a variety of alternating fixed and movable There are grate plate supports, each with several with cooling air openings and essentially from bottom to top Grate plates through which cooling air flows are attached. In Förderrich Seen from a fixed point of view, stationary rows of grate plates alternate back and forth moving rows of grate plates, which go beyond their corresponding and movable grate plate carrier on one or more longitudinally driven driven push frame together are attached. Through the oscillating movement of everyone movable rows of grate plates are the goods to be cooled, e.g. B. the hot cement clinker, transported in batches and cooled. It is known to protect the grate plates from thermal mechanical overloading of the tops of the plates with depressions or bags to hold and hold refrigerated goods  see which is then a protective layer for the hot sliding over it Forms refrigerated goods (EP-B-0 634 619).

As an alternative to a grate cooler in which the entire cooling grate or Parts of it are moved such. B. the traveling grate cooler and Chill grate cooler, is a z. B. from EP-A-0 718 578 known Grate cooler known in which the cooling grate through which cooling air flows is not moved, but a row above the grate surface of reciprocally triangular beam-shaped cross-section gene conveying elements is arranged transversely to the conveying direction of the goods, whereby by the reciprocating movement of this bar-shaped för the elements in the bed to be cooled successively the material are moved from the start of the cooler to the end of the cooler and are cooled in the process should. With this type of grate cooler, this is particularly true for Slip grate cooler wear problem occurring especially in over lapping area of adjacent moving and non-moving grate rows of slabs, caused by cement clinker abrasion and Gutver jams in the overlap area of the grate plates, reduced his.

The invention has for its object to provide a further grate cooler To create variant that is relatively simple, whose Cooling grate is largely protected from wear and tear and which can be covered with egg can operate high cooling efficiency.

This object is achieved with a grate cooler Features of claim 1 solved. Advantageous embodiments of the Invention are specified in the subclaims.

In the grate cooler according to the invention are above the cooling grate transverse to the refrigerated goods transport direction several spaced apart rotatably mounted tubular shafts arranged around the tubular shafts  have widely distributed projecting drivers. Here are the rotatably mounted tubular shafts at least in the direction of rotation drivable that the rotating with the tube shafts, in the refrigerated goods bed immersing the chilled goods from the start of the cooling grate to the cooling rusting move. According to a special feature of the invention can protect the hollow body tubular shaft from overheating the hot clinker bed from a cooling medium, in particular from Cooling air can be flowed through through the tube shaft circumference distributed openings emerges in the refrigerated goods bed and an additional Good bed cooling causes.

In addition to the rotatable tubular shafts with its rotating the Gutbettmitnehmern can with the grate cooler according to the invention the cooling grate still has moving parts to reinforce the refrigerated goods have transports. Of particular advantage is the fiction the grate cooler, the cooling grate is static, d. H. it contains none moving parts more. In this case, it is particularly advantageous if the static cooling grate areas or grate plates with refrigerated goods troughs or refrigerated goods pockets to hold and hold Has refrigerated goods, so that a lower pre-cooled on the cooling grate Good bed layer or protective layer is formed, over which the ab cooling hot material by means of the rotating carrier of the rotatable stored pipe shafts is movable in the cooling grate transport direction. The Bearing as well as the rotary drive or the rotary drives with the Mit Tube shafts occupied by users are advantageously outside the cooler side walls protected from the hot refrigerated goods.

With the grate cooler according to the invention, the following are overall Advantages achievable:

Especially when the cooling grate is static and the grate plate refrigerated goods troughs to form a wear protection layer  sen, the cooling grate or its grate plates are largely in front Wear protected as the hot clinker moved over the grate does not come into contact with the grate plates themselves. Because overlap areas between moving and neighboring non-moving If there are no rust plates, there is no wear and a clin Kerberfall at the overlap points of the grate plates is flat if avoided. Due to the type of arrangement of the material bed drivers on the rotatable tube shafts as well as by adjusting the Rotation speed can be about the distribution of the hot clinker the cooling grate not only in the direction of good transport, but also across to be influenced. The cooling medium, which is called overheating protection flows through the pipe shafts and pressed into the clinker bed creates an additional cooling effect for the hot clinker bed. Because there is no moving grate drive, and because the invention Rust cooler the tubular shaft bearings as well as the rotary drive with advantage are arranged outside the radiator side walls, the cooling grate can be freely designed on its sides. Contained in the hot bed The clinker pieces are rotated into the bed immerse the tubular shaft driver at least partially nert, so that a previously used in a grate cooler Intermediate breaker z. B. in the form of crushing rollers can be omitted. Finally, the rotating ones immersed in the clinker bed cause Apart from clinker bed transport, tubular shaft drivers also have one by mixing the clinker material, resulting in a total leads to high cooling efficiency.

The invention and its further features and advantages are apparent from hand of the exemplary embodiment shown schematically in the figures game explained in more detail.  

It shows:

Fig. 1 partially schematically shows a vertical longitudinal section through the grate cooler according to the invention for cooling hot clinker discharged from a rotary kiln, with the rotatably mounted Gutförderein directions and

Fig. 2 drawn out on an enlarged scale and perspectively a rotatably mounted crop conveyor of the grate cooler of Fig. 1st

According to FIG. 1, the hot cement clinker 10 discharged from a rotary kiln is transferred via a transfer device 11 such as, for. B. stairs rust to the cooling grate 12 , which can be flowed through essentially from the bottom upwards by cooling air 13 and which is arranged statically in the embodiment, ie which contains no moving parts. The cooling grate 12 is usually composed of individual grate plates together, which are designed so that, on the one hand, a diarrhea of goods to be cooled 10 is avoided as far as possible by the cooling grate, and on the other hand, the permeability of the cooling grate for the cooling air 13 is maintained. Advantageously, the grate plates of the cooling grate 12 on their top cooling troughs or Kühlgutta's for receiving and holding refrigerated goods 10 , so that on the cooling grate 12 a lower pre-cooled material bed or protective layer 14 is formed, via which the hot clinker to be cooled 10 is moved so that wear of the cooling grate or its grate plates is minimized.

The movement of the hot clinker 10 over the cooled material bed 14 is done in such a way that above the cooling grate 12 transversely to the material cooling transport direction several spaced rotatably mounted tubular shafts 15 a, 15 b, 15 c etc. are arranged, which project around the circumference of the tubular shaft Carriers 16 a, 16 b, 16 c, etc., the shafts 15 a to 15 c designed as hollow bodies being drivable in such a direction of rotation, counterclockwise in the exemplary embodiment in FIG. 1 that the carriers 16 a rotatable with the shafts to 16 c etc., the hot refrigerated goods 10 from the beginning to the end of the cooling grate 12 are successively transported over the already cooled lower material bed layer 14. During this clinker transport by the rotatable carriers 16 a etc., the hot material is mixed at the same time, thereby reducing the cooling efficiency of the grate cooler according to the invention is improved.

The cooling effect of the grate cooler according to the invention is further improved by the fact that - as can be seen in FIG. 2 - the tubular shafts 15 a etc. from a cooling medium 17 such as. B. cooling air can flow through, which exits through the circumference of the tube shaft openings 18 in the refrigerated goods bed and causes an additional good bed cooling. The cooling medium 17 also serves to protect against thermal overloading of the tubular shafts. From Fig. 2 also goes forward that the attached to the circumference of the tubular shaft 15 a driver 16 a can be divided, that is, several such drivers can be arranged spaced apart, also seen in the circumferential direction offset from each other, but the drivers can also be summarized in a continuous, uninterrupted bar 19 . The bearings 20 and the rotary drive 21 or the rotary drives of the tubular shaft 15 a occupied with the drivers 16 a etc. are advantageously arranged outside the radiator side walls protects ge.

The rotary drive 21 can be connected to at least one reversible motor, which is reversible in its direction of rotation. This means that the hot clinker bed 10 loosens up by possibly briefly changing the direction of rotation of the tube shafts with the drivers, promotes the mixing of the hot clinker bed and thus the cooling efficiency of the grate cooler according to the invention can be further increased.

Claims (5)

1. grate cooler with a cooling gas through which cooling grate ( 12 ), via which the items to be cooled such as. B. hot cement clinker is movable, characterized by the following features:
  • a) Above the cooling grate ( 12 ) transversely to the Kühlguttrans port direction several spaced, rotatably gela gered tubular shafts ( 15 a, 15 b, 15 c etc.) are arranged, the projecting drivers distributed around the tube shaft circumference ( 16 a, 16 b, 16 c etc.),
  • b) the tubular shafts ( 15 a etc.) can be driven in the direction of rotation such that the rotatable drivers ( 16 a etc.) with the tubular shafts move the refrigerated goods ( 10 ) from the beginning of the cooling grate to the end of the cooling grate,
  • c) the tubular shafts ( 15 a) are flowable from a cooling medium ( 17 ) through the openings ( 18 ) emerging through the circumference of the tubular shaft and exiting into the refrigerated goods bed and causing additional good bed cooling.
2. Grate cooler according to claim 1, characterized in that the cooling grate ( 12 ) is static, ie contains no moving parts.
3. grate cooler according to claims 1 or 2, characterized in that the in particular static cooling grate ( 12 ) grate plates or cooling grate sections with refrigerated goods troughs or chilled goods pockets for receiving and holding refrigerated goods on, so that on the cooling grate ( 12 ) has a lower precooled material bed layer or protective layer ( 14 ) is formed, via which the material ( 10 ) to be cooled can be moved in the cooling grate transport direction by means of the rotatable carriers ( 16 a etc.).
4. Grate cooler according to one of claims 1 to 3, characterized in that the bearings ( 20 ) and the rotary drive ( 21 ) / the rotary drives of the tubular shafts occupied with the drivers are arranged outside the cooler side walls.
5. grate cooler according to claim 4, characterized in that the rotary drive ( 21 ) has at least one reversible motor, that is reversible in its direction of rotation.
DE1999154683 1999-11-13 1999-11-13 Grate cooler has above cool grate, tubular shafts spaced apart and transverse to cold goods' transport direction with distributed projecting cams around periphery Withdrawn DE19954683A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1999154683 DE19954683A1 (en) 1999-11-13 1999-11-13 Grate cooler has above cool grate, tubular shafts spaced apart and transverse to cold goods' transport direction with distributed projecting cams around periphery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1999154683 DE19954683A1 (en) 1999-11-13 1999-11-13 Grate cooler has above cool grate, tubular shafts spaced apart and transverse to cold goods' transport direction with distributed projecting cams around periphery

Publications (1)

Publication Number Publication Date
DE19954683A1 true DE19954683A1 (en) 2001-05-17

Family

ID=7928953

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1999154683 Withdrawn DE19954683A1 (en) 1999-11-13 1999-11-13 Grate cooler has above cool grate, tubular shafts spaced apart and transverse to cold goods' transport direction with distributed projecting cams around periphery

Country Status (1)

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DE (1) DE19954683A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100430680C (en) * 2004-02-25 2008-11-05 南京凯盛水泥技术工程有限公司 Cooling machine high-temp fixed bed anti-stack device for industrial furnace
CN102538487A (en) * 2012-02-23 2012-07-04 天津菲斯特机械设备有限公司 Totally closed oil bath type reciprocating motion supporting device for cement clinker grate cooler

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1508585A1 (en) * 1966-08-23 1969-09-18 Polysius Ag Device for cooling Good
EP0634619A1 (en) * 1993-07-15 1995-01-18 Klöckner-Humboldt-Deutz Aktiengesellschaft Grate plate for a grate plate cooler
DE9403614U1 (en) * 1994-03-03 1995-07-06 Peters Ag Claudius Grate cooler with a roller-shaped grate element
EP0718578A2 (en) * 1992-12-23 1996-06-26 F.L. Smidth & Co. A/S Method and cooler for cooling particulate material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1508585A1 (en) * 1966-08-23 1969-09-18 Polysius Ag Device for cooling Good
EP0718578A2 (en) * 1992-12-23 1996-06-26 F.L. Smidth & Co. A/S Method and cooler for cooling particulate material
EP0634619A1 (en) * 1993-07-15 1995-01-18 Klöckner-Humboldt-Deutz Aktiengesellschaft Grate plate for a grate plate cooler
DE9403614U1 (en) * 1994-03-03 1995-07-06 Peters Ag Claudius Grate cooler with a roller-shaped grate element

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100430680C (en) * 2004-02-25 2008-11-05 南京凯盛水泥技术工程有限公司 Cooling machine high-temp fixed bed anti-stack device for industrial furnace
CN102538487A (en) * 2012-02-23 2012-07-04 天津菲斯特机械设备有限公司 Totally closed oil bath type reciprocating motion supporting device for cement clinker grate cooler

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Legal Events

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8139 Disposal/non-payment of the annual fee