EP0738380A1 - Rostplatte für den schubrost eines kühlers - Google Patents
Rostplatte für den schubrost eines kühlersInfo
- Publication number
- EP0738380A1 EP0738380A1 EP95938427A EP95938427A EP0738380A1 EP 0738380 A1 EP0738380 A1 EP 0738380A1 EP 95938427 A EP95938427 A EP 95938427A EP 95938427 A EP95938427 A EP 95938427A EP 0738380 A1 EP0738380 A1 EP 0738380A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grate plate
- grate
- plate
- cooling air
- support part
- 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
Links
- 238000001816 cooling Methods 0.000 claims description 31
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000004568 cement Substances 0.000 claims description 2
- 238000005452 bending Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 6
- 206010012735 Diarrhoea Diseases 0.000 description 1
- 241000221988 Russula cyanoxantha Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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
- 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
- Push grates for coolers for cement clinker and similar pourable firing material are known, which are formed by rows of grate plates which run transversely to the longitudinal direction of the grate and to the conveying direction of the material, are alternately fixed and move back and forth in the conveying direction.
- the individual grate plates of each row have an upper side that forms the support surface for the refrigerated goods bed. They are carried by a grate plate carrier, with which they are connected in the rear area of their underside via corresponding connection devices. They protrude forward from the grate plate carrier in order to overlap the rear part of the grate plates of the next row of grate plates.
- the stiffening devices can, for example, from longitudinal ribs (DE-C 2432599), from side walls of a box-shaped plate (EP-A 167 658; EP-A 337 383), from longitudinal strips of a frame-shaped configuration (EP-A 537 523) or any other, in Longitudinal elements are formed. For the sake of simplicity, they are referred to collectively as longitudinal ribs.
- a grate plate is known (DE-A 24 54 202), which has a heat-resistant and wear-resistant ceramic layer on the upper side, which is held by the lower part of the plate with the possibility of horizontal expansion.
- the lower part of the plate has fastening elements in both its rear and in its front area, from which it can be concluded that the front area is held and fixed by any unspecified supporting parts, so that the above-mentioned disadvantage cannot occur.
- the invention relates to the type in which the individual grate plate is held only in its rear region by the grate plate support, cantilevered freely to the front and contains rib elements which are exposed to the temperature effects of the material above or are firmly connected to a part exposed to the temperature are and thereby suffer the aforementioned bending.
- the invention has for its object to provide a grate plate of the type mentioned in the preamble of claim 1, which requires less vertical play between the plates and yet does not lead to grinding of the plates upon exposure to heat.
- the solution lies in the characterizing features of claim 1 and advantageously the features of the subclaims.
- the grate plate consists of two parts, namely the lower-side support part and the upper-side cover plate, the support part having the ribs which are necessary for transmitting the bending force and for supporting the front plate part, while the cover plate is designed such that it is under the thermal stress suffers a smaller bend.
- the support part has the ribs which are necessary for transmitting the bending force and for supporting the front plate part
- the cover plate is designed such that it is under the thermal stress suffers a smaller bend. This is done by being free of the ribs on the underside. So it is carried out essentially flat with a plate thickness that is significantly less than the vertical extension of the support part. It is admittedly also cooled by the cooling air at a lower temperature kept as their top; however, it is stabilized by the support part, the ribs of which are not exposed to any significant temperature difference and which therefore do not bend.
- the flat design of the cover plate should be present at least in the plate area that lies in front of the grate plate carrier. However, it is advantageously also essentially fulfilled in the area of the grate plate carrier. Since it must be expected that the cover plate expands more than the cooler support part due to its higher temperature, it should have freedom from expansion.
- cover plate and the support part are separate pieces, this also has the advantage that they can be made of different materials according to the different requirements (temperature resistance, wear resistance, toughness) and the cover plate as a wear part can be replaced independently of the support part.
- the invention does not want to rule out a one-piece design. In any case, the two parts are only firmly connected to one another in a limited area of their longitudinal extent, while in the remaining part they can cooperate in a supporting manner, but are independent of one another in the longitudinal direction.
- the devices of the grate plate for connection to a grate plate support can include a cooling air supply opening which is surrounded by a support edge which can be placed on the top of the grate plate support and which is formed by the support part and is preferably connected to the ribs in a force-transmitting manner.
- the cover plate and the support part together include channels for guiding the cooling air from the cooling air supply opening to the cooling air outlet openings opening at the top.
- the grate plate contains open recesses on the top side for receiving and holding refrigerated goods, in which at least some of the cooling air outlet openings open, at least the bottom of the recesses is expediently formed by the support part, since it - unlike the higher top surface of the cover plate - does not exposed to high refrigerated goods temperature.
- This also applies to any side walls of the depressions.
- the expansion joint between the cover plate and the bottom or the side walls of the depressions is then advantageously formed by the cooling air outlet openings. They are delimited on the upper side by the cover plate and on the underside by the supporting part and form a heat transport barrier, thanks to which the supporting part is freed from the influence of heat all the more.
- the cooling air must be guided past the rear recesses to the front recess from the cooling air supply opening provided on the grate plate carrier. So that this is possible without major losses and on the other hand the largest possible surface area of the grate plate can be provided for the depressions, the cross-sectional size of the cooling air channels, which are formed between two rear depressions or between a rear depression and a lateral plate boundary, expediently decreases from the rear from the front.
- the bottom is part of the grate plate so that it can be replaced downwards.
- the base is preferably part of the grate plate, namely connected to the support part, in that it is closed at the bottom in front of the cooling air supply opening. This gives you the opportunity to assemble or disassemble the grate plate as a whole from below, and worn or damaged cover plates can be easily replaced.
- the devices for connecting the grate plate to a grate plate support expediently include the support edge of the support part on the Upper side of the grate plate support pressing device that engages the cover plate. Instead, it would also be possible to clamp the support part directly onto the grate plate carrier, the connection of the cover plate to the support part being independent of the connection of the support part to the grate plate carrier; however, the mentioned feature not only creates a connection with the grate plate support, but also between the cover plate and the support part in the simplest way.
- the front area of the cover plate can rest freely on the support part, there being no positive connection between the front area of the cover plate and the support part. If, however, it is feared that the cover plate could warp or, in certain thermal conditions, could undesirably stand out from the support part on the end face, holding means can be provided which prevent such a lift-off without impeding the expansion of the cover plate in the direction of its surface extension.
- the invention makes it possible to replace the cover plate in the event of wear, it makes sense to provide an exchangeable wear part even for the area of the grate plate that is most at risk of wear, namely its end face.
- Fig. 2 is a longitudinal section
- Fig. 3 is a partially sectioned front view according to line A-A of
- grate plate carrier 1 which is formed by one or more hollow profiles running across the grate width, a plurality of plates are arranged side by side, of which only one appears in the drawing.
- the top of the grate plate carrier 1 is cut out in the area of each grate plate to form a cooling air supply opening 2. It is surrounded by an upper edge on which the grate plate sits.
- peripheral edge 4 is provided, which sits tightly on the edge of the grate plate carrier and encloses the plate-side cooling air supply opening 5.
- a base 6 adjoins the front in one piece, which runs essentially parallel to the plane of the edge 4.
- the support part 3 of the plate is suspended from a wear strip 13, which carries on the back one or more hooks with which it holds onto the front edge strip 9 of the support part 3.
- this wear strip is pulled up to the height of the top of the cover plate 11 and thus forms the end face 12 of the plate in its entirety.
- top-side depressions 14 are provided side by side, which are intended to receive and hold refrigerated goods. They are formed by correspondingly shaped cutouts in the cover plate 11 and troughs in the support part, which consist of a trough bottom 15 and trough walls 16.
- the shape of the trough walls 16 corresponds to the shape of the plate cutouts 14 in plan view. They can be vertically aligned with the edge of the cutouts, but in the example shown (see FIGS. 2 and 3) they step back a little.
- the front and rear parts of the trough walls 16 extend to the support surface 10 and are involved in supporting the cover plate 11.
- 11 columns 17 are formed between the lateral trough walls 16 and the cover plate, which serve as cooling air outlet openings.
- Another depression 18, which extends over almost the entire width of the grate plate, is located in the front part of the grate plate. It is delimited at the bottom by the bottom 6 of the support part, at the front by the hook 19 of the wear strip 13 and laterally and at the rear by trough walls 20, 21.
- the trough walls 20, 21 form a gap with the underside of the cover plate 11 as an air discharge opening.
- the rear trough wall 21 is undulating in plan view in order to give the associated air outlet opening the greatest possible length.
- the side trough walls 20 run obliquely towards the rear in relation to the side edge strips 7 of the support part in order to ensure the best possible inflow conditions.
- the lateral trough walls 16 of the depressions 14 also run obliquely, the distance between the adjacent troughs 14 or between the troughs 14 and the adjacent lateral edge strips 7 of the support part following reduced at the front, corresponding to the amount of cooling air decreasing towards the front, which is conveyed through the channels next to the depressions 14.
- the troughs of the depressions 14 in the support part are mushroom-like, which on the one hand increases the cross-sectional size of the channels 22, 23 and on the other hand cools the troughs.
- depressions 24 are provided in the underside of the bottom 6 of the support part, in which tools can attack during the assembly or disassembly of the plates.
- the lateral edge strips 7 and, in part, the troughs and trough walls form the longitudinally stiffening parts of the support part 3, which are referred to as ribs in the claim and in the introduction to the description.
- the cover plate is preferably flat; however, its front part can also be slightly rising in relation to its approximately horizontally arranged rear part.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Details (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Baking, Grill, Roasting (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9417829U DE9417829U1 (de) | 1994-11-07 | 1994-11-07 | Rostplatte für den Schubrost eines Kühlers |
DE9417829U | 1994-11-07 | ||
PCT/EP1995/004370 WO1996014549A1 (de) | 1994-11-07 | 1995-11-06 | Rostplatte für den schubrost eines kühlers |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0738380A1 true EP0738380A1 (de) | 1996-10-23 |
EP0738380B1 EP0738380B1 (de) | 2001-02-28 |
Family
ID=6915799
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95938427A Expired - Lifetime EP0738380B1 (de) | 1994-11-07 | 1995-11-06 | Rostplatte für den schubrost eines kühlers |
Country Status (7)
Country | Link |
---|---|
US (1) | US7021928B1 (de) |
EP (1) | EP0738380B1 (de) |
JP (1) | JP4109716B2 (de) |
DE (2) | DE9417829U1 (de) |
DK (1) | DK0738380T3 (de) |
ES (1) | ES2155536T3 (de) |
WO (1) | WO1996014549A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19622636A1 (de) * | 1996-06-05 | 1997-12-11 | Krupp Polysius Ag | Rostplatte sowie Verfahren zur Herstellung einer Rostplatte |
DE10221981A1 (de) * | 2002-05-17 | 2003-11-27 | Kloeckner Humboldt Wedag | Rostplatte für Schubrostkühler zum Abkühlen von heißem Gut |
DE10305113A1 (de) * | 2003-02-07 | 2004-08-19 | Polysius Ag | Belüftungselement für einen Kühler |
DE102004040048A1 (de) * | 2004-08-18 | 2006-02-23 | Ikn Gmbh | Rostplattenanordnung für Stufenroste |
DE102009009285B4 (de) * | 2009-02-17 | 2013-11-28 | Ikn Gmbh | Rostplattenanordnung |
DE102009016523A1 (de) * | 2009-04-08 | 2010-11-25 | Baumgarte Boiler Systems Gmbh | Roststab für einen Verbrennungsofen und Verfahren zur Herstellung eines Roststabes |
DE102011100369A1 (de) * | 2011-04-15 | 2012-10-18 | Wvt Breiding Gmbh | Modularer Roststab, Auflageelement, Brennbahnelement und Fußelement dafür sowie Vorschubrost einer Verbrennungsanlage |
EP2645034B1 (de) * | 2012-03-28 | 2015-05-27 | Alite GmbH | Rostelement für einen Kühlrost |
EP3112786B2 (de) | 2015-07-03 | 2021-02-17 | Alite GmbH | Klinkereinlassverteilung eines zementklinkerkühlers |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1134329B (de) | 1961-01-02 | 1962-08-02 | Peters Ag Claudius | Stufen-Rostkuehler, insbesondere Vorschubstufenrostkuehler |
US4200047A (en) * | 1977-04-01 | 1980-04-29 | Claudius Peters Ag | Two part grate for stokers with reciprocating grate plates |
DE3734043A1 (de) * | 1987-10-08 | 1989-04-20 | Kloeckner Humboldt Deutz Ag | Rostkuehler zum kuehlen von heissem schuettgut |
DE3812425A1 (de) | 1988-04-14 | 1989-10-26 | Peters Ag Claudius | Kuehlerrostplatte |
DE4134242A1 (de) | 1991-10-16 | 1993-04-22 | Krupp Polysius Ag | Kuehlrost |
DE4412885A1 (de) * | 1994-04-14 | 1995-10-19 | Krupp Polysius Ag | Kühlrost |
DE9417515U1 (de) * | 1994-10-31 | 1996-02-29 | Babcock Materials Handling Division GmbH, 21614 Buxtehude | Schubrost für Klinkerkühler |
DE19504588B4 (de) * | 1995-02-11 | 2006-07-13 | Khd Humboldt Wedag Gmbh | Rostplatte für Schubrostkühler zum Abkühlen von heißem Gut |
US5575642A (en) * | 1995-12-01 | 1996-11-19 | The Carondelet Corporation | Grate plate |
DE19622636A1 (de) * | 1996-06-05 | 1997-12-11 | Krupp Polysius Ag | Rostplatte sowie Verfahren zur Herstellung einer Rostplatte |
-
1994
- 1994-11-07 DE DE9417829U patent/DE9417829U1/de not_active Expired - Lifetime
-
1995
- 1995-11-06 DK DK95938427T patent/DK0738380T3/da active
- 1995-11-06 WO PCT/EP1995/004370 patent/WO1996014549A1/de active IP Right Grant
- 1995-11-06 JP JP51506496A patent/JP4109716B2/ja not_active Expired - Fee Related
- 1995-11-06 DE DE59509065T patent/DE59509065D1/de not_active Expired - Lifetime
- 1995-11-06 EP EP95938427A patent/EP0738380B1/de not_active Expired - Lifetime
- 1995-11-06 ES ES95938427T patent/ES2155536T3/es not_active Expired - Lifetime
- 1995-11-06 US US08/666,295 patent/US7021928B1/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9614549A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0738380B1 (de) | 2001-02-28 |
JPH09507827A (ja) | 1997-08-12 |
DE9417829U1 (de) | 1996-03-14 |
ES2155536T3 (es) | 2001-05-16 |
JP4109716B2 (ja) | 2008-07-02 |
DE59509065D1 (de) | 2001-04-05 |
WO1996014549A1 (de) | 1996-05-17 |
DK0738380T3 (da) | 2001-06-11 |
US7021928B1 (en) | 2006-04-04 |
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