EP0549816B2 - Grid rod for the construction of a grid - Google Patents

Abstract

The invention relates to a grid rod (8) for the construction of a grid, comprising two side webs (12, 14) arranged at a spacing from one another as well as, arranged one behind another between these side webs in the longitudinal direction of the same, a number of lamellar bodies (6), between which a gas blow-out slot (34) is left in each case. The side webs (12, 14) are formed by two mutually opposite legs of a rigid frame (2), and the lamellar bodies (6) are designed in each case as individual components which can be detachably connected to the side webs (12, 14). The lamellar bodies (6) are preferably threaded one behind another into longitudinal guides (18, 20) arranged on the frame and are held by spacing projections (30, 32) at a distance which is necessary for forming a gas blow-out slot (34). <IMAGE>

Description

The present invention relates to a grate floor element to build a grate in the preamble of the claim 1 described type, which for example for the absorption of solids during their combustion, Cooling or other heat treatment is used. The slots remaining between the lamellar bodies serve to blow out a gas, for example air, which is the material of the flows through upwards. The gas can be known in Perform different tasks, e.g. cooling the grate floor, cooling or heat treatment of the material lying on the grate floor, a promotion of this material, etc. A grate floor element according to the preamble of claim 1 is described in DE 58 351 C.

Such grate floors are generally strong Subject to wear. This applies in particular to the Use when cooling cement clinker, which is used at high Weight also have a high surface roughness.

There is a grate floor element according to EP 0 167 658 B1 from two Basic components, each of which has a side bridge as well several, twice the distance between the slat bodies with this integral slat body includes; the grate floor element is installed, by connecting two side bars in this way be that the lamellar body of a side web between the slat bodies of the other side web engage and in receiving openings formed on this be put. To that from the basic components to hold together formed grate floor element are the Basic components, for example on the underside of the grate floor element screwed together.

A disadvantage of the known construction is that if the wear exceeds a permissible level individual slat body and / or side bars the entire grate floor element or at least Whole basic components have to be replaced, whereby in the latter case, the components in a complex manner cohesive connection released and after the replacement of a basic component can be restored got to. In general, there will still be usable, unworn parts of the grate floor element also replaced, resulting in high material costs leads; on the other hand is the disassembly or assembly process lengthy, which regularly leads to longer downtimes for the entire plant concerned. This problem is compounded by the fact that several grate floor elements together to form a grate floor connected and this rust floor in turn on one Grate support is attached so that, for example Need to replace individual slat bodies, always leads to the associated webs must be replaced and that their connection to the webs of neighboring rust floor elements as well loosened to the grate carrier and again after the replacement must be manufactured.

The FR-A-464509 is already a grate known. It is a firing grate for boiler firing.

In the well-known firing grate, the fins are with on these trained shoulders on the upper edge of the side walls laid on a gutter.

It is the object of the present invention, a grate floor element which in the preamble of claim 1 mentioned type with constructively simple means improve it Cooling and conveying tasks, has grown better.

This object is achieved by the im Features described claim 1 solved. The Andes Side rails trained longitudinal guide profiles on the one hand and the interacting with it, on the slats trained counter profiles on the other hand allow in easy assembly and fastening of the slats.

With the construction according to the invention also the circumstance Taken into account that especially the slat body one are subject to increased wear and are replaced have to. The construction according to the invention allows to replace individual slat bodies with little assembly effort, without having to replace intact side bars at the same time. The connection of the slat body with the side bars can be solved structurally very easily, as with several embodiments is described in more detail.

The division of the grate floor element into one Frame and in slats corresponds to the different Functions of this framework on the one hand, preferably as Serves for the slat body, and the slat body on the other hand, which preferably form the grate surface and therefore subject to preferential wear. This division it also allows, for example, the frame on the one hand and the lamellar bodies on the other hand from different, optimally adapted to their respective functions To manufacture materials.

According to a feature of the invention it is provided that the Each side webs running in the longitudinal direction thereof, as a guide rail have serving longitudinal guide profile, and that the Lamellar bodies at each of their lateral ends interacting with an associated longitudinal guide profile Have a counter profile. This training enables a particularly simple assembly of the slat bodies, by simply inserting them one after the other into the longitudinal guide profiles the side bars are threaded.

The longitudinal guide profiles can be used as grooves and the counter profiles accordingly designed as spring beads be or vice versa, as with different embodiments is pictured.

In the invention the side bridges by parallel, perpendicular sidewalls formed on the frame level, wherein the side walls at least on a first frame face through a front wall with one opposite the Side walls of lower wall height connected to each other are; the longitudinal guide profiles are then at each other facing inner surfaces of the side walls above this end wall so that it is on the first Run out the front of the frame into the end edges of the side walls can. This construction enables the Lamella body straight from the first face of the frame lined up between the side bridges so that the entire grate floor element a compact, outward represents smooth component, which in a simple manner gastight with other grate floor elements to form a grate floor can be connected.

The first end face of the frame is preferably that in the conveying direction, the front end face, which the one The most exposed area of the grate floor element corresponds so that the one to be replaced Slat body also accessible first are.

To the position of the slat body in the longitudinal direction of the Side bars or opposite adjacent slat bodies To define, it is further provided according to the invention that the lamellar bodies have spacing projections that intended to rest on an adjacent slat body are; these allow the lamellar bodies to each up to the stop one behind the other in the longitudinal guide profiles thread, these spacing projections also those remaining between the lamellar bodies Define gas outlet slot.

Another significant improvement in terms of Division of tasks described above on the one hand and on the other hand, the lamellar body becomes achieved that the lamellar body on their side Each ends to cover the top edge of one assigned side flange designed longitudinal flange to have. When threading the slat body into the longitudinal guide profiles lay the longitudinal flanges on the Top edge of the assigned side bars and cover them upwards. This will counteract the side bars wear from the one lying on the grate floor Material effectively protected so that replacement of the Frame is no longer required at all.

If the lamellar bodies are designed in such a way that they each form a surface of the grate floor Main section and an adjacent lamellar body interdisciplinary approach is provided that intended to engage in the longitudinal guide profiles Counter profiles as well as those for covering the side bars certain longitudinal flanges only on the lateral ends of the main section are formed.

To attach the slat body to the frame, is a particularly simple solution to a fin slat body provided which with means for locking it is equipped on the frame. This final slat body is the last slat body inserted in the longitudinal guide profile and on any appropriately connected to the frame so that it holds the other slat body. The attachment the final slat body can, for example, by Welding, by screwing, by locking or in other known way.

A preferred application of the invention Grate floor elements are so-called step grates. In this The frame has a catch in its first end face assigned end area a bottom wall and in its end area distant from the first frame end face a ceiling wall, each grate floor element with the bottom wall to the top wall one in the conveying direction of the shelf following the floor element sets. The front face of all grate floor elements This way it stays in the assembled state always accessible so that individual slat bodies can be replaced becomes possible without the associated frame to dismantle.

Further details, advantages and features emerge itself from the claims, the following description and the drawing.

Figur 1

eine Seitenansicht eines auf einen Rostträger aufgesetzten Rostbodenelementes sowie eines zweiten damit nach Art eines Stufenrostes zusammenwirkenden Rostbodenelementes;

Figur 2

einen Schnitt durch das Rostbodenelement der Figur 1 entlang der Schnittlinie A-A;

Figur 3

in perspektivischer Darstellung einen Rahmen des in der Figur 1 dargestellten Rostbodenelementes;

Figur 4

eine perspektivische Darstellung eines Lamellenkörpers;

Figur 5

eine perspektivische Darstellung eines Abschluß-Lamellenkörpers;

Figur 6

eine Einzelheit zweier benachbarter Rostbodenelemente in einer Schnittdarstellung.

In the drawing, embodiments of the invention are shown, which are described in more detail below. Show it:

Figure 1

a side view of a grate base element placed on a grate support and a second grate base element interacting therewith in the manner of a step grate;

Figure 2

a section through the grate floor element of Figure 1 along the section line AA;

Figure 3

a perspective view of a frame of the grate floor element shown in Figure 1;

Figure 4

a perspective view of a slat body;

Figure 5

a perspective view of a final slat body;

Figure 6

a detail of two adjacent grate floor elements in a sectional view.

The following example description also refers to the EP 0 167 658 B1 referenced in the introduction to the description is called. This shows details in FIG. 8 for the basic construction of a grate floor Help of rust floor elements. Several regarding the Direction of conveyance of the material placed next to each other and interconnected grate floor elements result a row of grates; several in a row in the conveying direction arranged grate rows result in the grate floor. The one behind the other in the conveying direction Grate floor elements can be arranged in steps, as indicated in the present Figure 1.

That from a preferably one-piece frame 2 and a variety of in the indicated by the arrow 4 Direction of delivery arranged lamellar bodies 6 formed grate floor element 8 is on a Grate support 10 placed. The grate support 10 is in not shown way to a gas supply line connected. As can be seen in particular from FIG. 3 is, the frame 2 comprises two side webs 12, 14, the as vertical side walls on the main frame level are trained. The side walls 12, 14 are on their front frame end 15 in the conveying direction connected by an end wall 16, the one compared to the side walls 12, 14 lower wall height has, so that the side walls 12, 14 over the upper edge protrude from the end wall 16.

As can be seen from Figures 2 and 3, are on the mutually facing inner surfaces of the side walls 12, 14 longitudinal grooves 18, 20 formed as the longitudinal guide profiles serve to accommodate lamellar bodies 6. These longitudinal grooves are arranged above the end wall 16 and run in the area of the front end of the frame into the end edges of the side walls so that they are accessible from this side.

Figure 4 shows a lamellar body 6. This consists in essentially from one that forms the grate floor surface Main section 22 and an approach arranged thereon 24, which in the manner shown in Figure 1 engages under an adjacent slat body. At the side ends of the main section 22 are Spring beads 26 and 28 formed to the longitudinal grooves 18, 20 are complementarily shaped. The slat body 6 are from the front frame end 15 forth in the longitudinal grooves 18, 20 threaded one behind the other.

On the front edges of the main section in the direction of insertion 22 two spacing projections 30, 32 are formed, which are on the trailing edges of each before Put in the threaded slat body 6. These spacing tabs define the between the lamellar bodies 6 remaining gas outlet slot 34 (see Figure 1). The spacing projections are easier To reduce size by grinding or by build-up welding to enlarge so that the slot width can be varied.

In order to secure the slat body 6 in the frame, as last a final lamella body 36 is threaded, which differs from a normal slat body 6 distinguishes that the main section 38 one at its rear end in the direction of insertion has the end flange 40 below, which is essentially extends to the upper edge of the end wall 16. On the end flange 40 on the one hand and on the end wall 16, on the other hand, are means for locking the end lamellar body 36 formed on the frame 2. in the illustrated embodiment preferably has at least one of the two adjacent edges of the End flange 40 or end wall 16 a chamfer, the simple way of producing a connection weld 42 allows.

Figure 6 shows a detail of another embodiment for the longitudinal guidance of the slat bodies as part of. Figure 6 shows two adjacent Side walls 44 and 46 two in a row of grids side by side arranged grate floor elements. The sidewalls 44, 46 have an as at their respective upper ends Longitudinal profile serving spring bead 48, 50, while arranged on the lamellar bodies 52 and 54, respectively Counter profiles as complementary to the spring beads Grooves 56 and 58 are formed.

As can further be seen in FIG. 6, the lamella bodies have 52 and 54 at their lateral ends, respectively one for covering the upper edge of an associated one Side wall 44 or 46 designed longitudinal flange 56 or 58. These prevent the side walls 44, 46 with materials lying on the grate come into contact, so that wear is limited to the lamellar body remains, which can be replaced in a simple manner can.

As can be seen in FIGS. 1 and 3, the frame has 2 in its associated with the first frame end face 15 End area a bottom wall 60 that over the grate carrier 10 projecting area covers from below. The on the grate support 10 area of the frame is open at the bottom, so that gas from the grate carrier into the Enter grate bottom element 8 and to the gas outlet slots 34 can flow. The bottom wall 60 closes the frame 2 in the protruding over the grate support 10 Gas-tight area downwards.

In its end region, which is distant from the first frame end face 15 the frame 2 is covered by a ceiling wall 62. To the front of the front of the frame The first slat body lies on the end edge of the ceiling wall on. In its facing the first frame face Area, the ceiling wall is preferably similar profiled the main section 22 of a slat body, so that between the ceiling wall and the neck 24 of the first slat body also a gas outlet slot is formed.

Figures 1 and 2 each show one labeled 64 hatched area, which is the usual wear pattern of a grate floor element. Out of it it follows that preferably in the direction of transport wear the front areas of the material to be When the wear has reached a permissible limit, is in the case of that described with reference to Figures 1 to 5 Embodiment which the final slat body 36 fixing weld 42 severed, see above that the front slat body is removed and replaced with new one can be replaced. The wear on the top edges the side walls 12, 14 is for example by cladding balanced. It comes down to a simple one Interchangeability of the lamellar bodies, that the lamellar body which is subject to the greatest wear arranged in the region of the front end face 15 are so that they can be replaced without the disassemble the not worn slat body.

In the embodiment described with reference to FIG. 6 it is sufficient to replace the slat body 52, 54, since the side walls 44, 46 are not subject to wear can.

Figure 1 shows schematically the arrangement of another arranged in the transport direction 4 in front of the grate floor element 2 Grate floor element 70 of a further row of grates, which is staggered downwards. The upper grate floor element 8 overlaps the lower one Grate floor element 70 at most in the area of the ceiling wall 62 so that the effective grate floor area is not reduced becomes. As can be seen further, the front remains Front of all grate floor elements because of the stepped Arrangement always accessible, so that a replacement the preferably wearing lamellar body 6 is possible without dismantling the grate floor elements. Also other wear-related repairs, such as build-up welding of the side walls 12, 14 is without dismantling the grate floor elements from above possible.

Claims (11)

1. A grate element (8) for constructing a grate which consists of a plurality of grate rows arranged one behind the other in the feeding direction, each grate row being formed of a plurality of grate elements arranged side-by-side, comprising two side webs (12, 14) arranged at a spacing relative to each other and a plurality of plate bodies (6) which are arranged between said side webs one behind the other in the longitudinal direction thereof and extend transverse to the feeding direction, and between which is left a respective gas-blowout slot (34), wherein the side webs (12, 14) are formed by two mutually oppositely disposed limbs of a frame (2), wherein the plate bodies (6) are each in the form of respective individual components releasably connected connectable to the side webs (12, 14), the side webs (12, 14) each having a longitudinal guide profile (18, 20) which extends in the longitudinal direction thereof and which permits only longitudinal displacement, the plate bodies (6) further at their lateral ends each having a respective counter-profile (26, 28) co-operating with an associated longitudinal guide profile (18, 20), and the side webs (12, 14) being formed by mutually parallel side walls which are disposed perpendicularly to the plane of the frame, characterised in that said side walls (12, 14) are connected at least at a first front side of the frame (15) by an end wall (16) of a wall height which is less than the side walls (12, 14), and that the longitudinal guide profiles (18, 20) are formed at the mutually facing inside surfaces of the side walls (12, 14) above the end wall (16) and terminate at the first front side (15) of the frame in the end edges of the side wall (12, 14).
2. A grate element according to claim 1 characterised in that the longitudinal guide profiles (18, 20) at the insides of the side webs are in the form of longitudinal grooves and the counter-profiles (26, 28) are in the form of rib-like flanges which are complementary with respect to the longitudinal grooves.
3. A grate element according to claim 1 characterised in that the longitudinal guide profiles (48, 50) at the insides of the side webs are in the form of rib-like flanges and the counter-profiles (56, 58) are in the form of grooves which are complementary with respect to the rib-like flanges.
4. A grate element according to one of claims 1 to 3 characterised in that the plate bodies (6) have front and/or rear spacing projections (30, 32) which face an adjacent plate body and which are intended to bear against an adjacent plate body (6) and which define the gas discharge slot (34) remaining between them.
5. A grate element according to one of claims 1 to 4 characterised in that at each of their lateral ends the plate bodies (52, 54) have a respective longitudinal flange (56, 58) which is designed to cover over the upper edge of an associated side web (44, 46).
6. A grate element according to one of claims 1 to 5 characterised in that the plate bodies (6) each have a main portion (22) forming the grate surface and a projection (24) which engages under an adjacent plate body, wherein the counter-profiles (26, 28) are respectively provided at the lateral ends of the main portion (22).
7. A grate element according to claim 6 characterised in that the longitudinal flanges (56, 58) are respectively provided at the lateral ends of the main portion (22).
8. A grate element according to one of claims 1 to 7 characterised in that there is provided a terminal plate body (36) which has means for arresting same to the frame.
9. A grate element according to one of claims 1 to 8 characterised in that in its end region which is associated with the first end (15) of the frame the frame (2) has a bottom wall (60).
10. A grate element according to one of claims 1 to 9 characterised in that in its end region which is remote from the first end (15) of the frame the frame (2) has a top wall (62) and that at its end towards the first end (15) of the frame the top wall is preferably of a longitudinal sectional profile corresponding to the main portion (22) of a plate body (6).
11. A grate element according to one of claims 1 to 10 characterised in that the frame (2) is provided with means for mounting same on a grate carrier (10) and means for connection to further frames forming a row of grates.

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