KR20200001933U - Fire grate for incineratior - Google Patents

Abstract

The present invention relates to a sidewall grate installed facing the sidewall of an incinerator and its installation structure. According to the installation structure, a plurality of grate rows are divided into a fixed end and a moving end and alternately arranged in a stepwise manner while a plurality of grate rows are supported by a round bar, and a sidewall grate installed facing the inner wall of the incinerator at the outermost side of the fixed end Is provided, characterized in that the front lower end of the rear sidewall grate is supported on the rear upper end of the front sidewall grate in the installed state. According to the sidewall grate of the present invention and the installation structure using the same, abrasion damage between the sidewall grate of the fixed end and the grate of the moving end that is installed facing at least the inner wall of the incinerator is suppressed as much as possible, and the service life of the grate can be extended, As a result, damage to the sidewall of the incinerator in which the sidewall grate is installed facing each other may be alleviated. In addition, according to the sidewall grate and its installation structure, it is possible to maintain the installation state between the sidewall grate without a moving stage grate, so that maintenance such as partial replacement of the grate constituting the fixed stage or the moving stage can be facilitated. .

Description

Fire grate for incinerator {FIRE GRATE FOR INCINERATIOR}

The present invention relates to an incinerator grate, and in particular, to an incinerator grate applied to a stocker type incinerator.

In general, waste such as household or industrial waste is incinerated using a stocker-type incinerator. 1 shows the installation structure of a grate row in a conventional stocker type incinerator.

1, a plurality of heat-resistant/wear-resistant metal grate (1) is supported by round bars (30M, 30S) to form one row, and these grate (1) rows are fixed ends (F1, F2) And the moving end (M) are separated and alternately arranged in a stepped manner. The fixed ends (F1, F2) are mounted on a fixed frame of a transport device (not shown) by a fixed end round bar (30S), and the moving end (M) is operated by a moving end round bar (30M). Mounted on the frame, the moving end (M) moves back and forth between the fixed ends (F1, F2) disposed above and below the moving end (M) in the incineration process to sequentially move the waste to the exit side and the front side of the grate (1). Works in a way.

In this case, when the trash is moved forward, the rear bottom of the grate (1) row is supported by round bars (30M, 30S) for easy attachment and detachment, but the front bottom is only on the upper surface of the grate in the front arena. Since it is a supported structure, abrasion damage is intensified at the contact portion between the rows of the front and rear grate 1, and thus there is a problem that the grate 1 is unintentionally dropped from the round bars 30M and 30S during the front and rear operation.

In addition, despite the fact that the upper wall thickness of the grate 1 is formed as thin as around 15 mm to secure sufficient space for the passage of combustion gas, there is a problem that it is vulnerable to bending deformation because it is directly exposed to high heat inside the incinerator.

In addition, the upper space of the grate (1) column is provided as an internal space of the incinerator where waste is dried, burned, and ash processed, and outside air is provided through the opening (11) provided at the front side wall of the grate (1). It is introduced from the space under the heat staircase to the upper space of the grate (1).If the opening 11 provided on the front sidewall side of the grate (1) is blocked by a combustion product such as clinker, sufficient combustion gas for waste incineration is produced. Since it cannot be supplied, there is a problem that the combustion efficiency of the incinerator is significantly lowered.

The present invention is to provide a grate for an incinerator capable of delaying wear damage and maximizing incineration efficiency.

In the process of developing a grate and its installation structure that can delay abrasion damage and maximize incineration efficiency as a grate installed in a stocker-type incinerator, the present inventor, etc. In response to this, when the mounting rod joints provided at the rear corners of the grate are formed in an angled shape, a method of distributing the load of the grate stacked in a stepwise manner so as not to accumulate, or a method in which the front shoulder of the grate is raised upward is adopted. In the process of operating the incinerator, it was conceived that the abrasion damage of the grate can be minimized.In addition, when the cross rib is formed inside the upper wall of the grate, it was conceived that the flexural deformation resistance and strength could be greatly improved. It was conceived that the supply and incineration efficiency of the combustion gas can be greatly improved when the grate is formed with a groove on the upper wall of the grate and a gap in the side wall, and the present invention was reached by further concretely specifying the mechanical design for this. The gist of the present invention based on the recognition of the above-described problem and the focus on the solution for the same is the following content as described in the claims.

(1) It is applied to a stocker-type incinerator in which a plurality of grate rows are divided into a fixed end and a moving end and are alternately arranged in a stepwise manner, and in the grate in which the front corners of the rear grate reciprocate on the upper wall of the front grate, the rear of the grate A grate for an incinerator, characterized in that a groove portion corresponding to the cross-sectional shape of each rod is provided as a mounting rod coupling portion provided in each portion.

(2) The incinerator grate of (1), characterized in that a cross-shaped rib is provided inside the upper wall of the grate.

(3) The incinerator grate of (1), characterized in that the front shoulder of the grate is raised upward.

(4) A groove extending between the front and rear surfaces of the grate is provided on the surface of the upper wall of the grate, and the groove is opened to the front and is formed only to a region that slides when the rear grate reciprocates and slides toward the rear. The grate for the incinerator of the above (1), characterized in that forming a gap corresponding to the first flow path for supplying the combustion gas between the front leg portions of the rear grate.

(5) The (1), wherein a plurality of protrusions are provided on one side wall of the grate, and the protrusions form a gap corresponding to a second flow path for supplying combustion gas between adjacent grates arranged in parallel. Grate for incinerators.

According to the grate for incinerator and its installation structure of the present invention, the mounting rod of the incinerator conveying device on which the grate is mounted is a leg, and correspondingly, the mounting rod coupling portion provided at the rear leg of the grate is formed into an angled groove. Even if the grate is stacked, the wear damage can be minimized by distributing the load of the grate so that it does not accumulate, and the wear time can be extended as much as possible by delaying the abrasion time as much as possible by making the front shoulder of the grate in a raised shape. In addition, by forming a cross rib inside the upper wall of the grate, the flexural deformation resistance and strength can be greatly improved, and the combustion gas supply path is formed with a groove and/or a sidewall gap in the upper wall of the grate. It can greatly improve the supply and incineration efficiency.

1 is a perspective view of an installation structure of a grate row in a small talker type incinerator according to the prior art.
2 is a perspective view of a grate according to an embodiment of the present invention.
3 is a cross-sectional view taken along line AA of the grate according to an embodiment of the present invention
Figure 4 is a perspective view of the installation structure of the grate column according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail through examples. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to their usual or dictionary meanings, and the designer appropriately explains the concept of terms in order to explain his own design in the best way. Based on the principle that it can be defined, it should be interpreted as a meaning and concept consistent with the technical idea of the present invention. Therefore, the configuration of the embodiments described in the present specification is only one of the most preferred embodiments of the present invention, and does not represent all the technical ideas of the present invention, and various equivalents that can replace them at the time of filing of the present invention It is to be understood that there may be variations and variations. On the other hand, in the drawings, the same or similar reference numbers are given to the same or equivalent material, and in the entire specification, when a certain part "includes" a certain component, this is another component unless otherwise stated. It does not exclude, but means that other components can be further included.

2 and 3 show a perspective view and a cross-sectional view along line A-A of the grate 10 according to an embodiment of the present invention, respectively, and FIG. 4 shows a perspective view of the installation structure of such a grate 10 row.

Hereinafter, for convenience of explanation, with respect to the shape or installation orientation of the grate 10 and its respective parts, the lower part of the stairs is forward and the upper part is based on the direction in which waste (not shown) moves along the row of the grate 10 It will be described backwards.

The main body of the grate 10 according to the present invention is composed of an upper wall 12, left and right side walls 14, a front wall 16, and a rear wall 18, and a front leg 17 and a rear leg ( 19) is provided. This grate 10 is applied to a stocker type incinerator. The stocker type incinerator is divided into incineration stages such as a drying stage, a combustion stage, and a post-combustion stage, and each incineration stage is a type in which a plurality of grate 10 rows are divided into a fixed stage and a moving stage, and are alternately arranged in a stepwise manner. In the incineration stage configuration, the grate 10 is supported by inserting the mounting rods 40M and 40S of the incinerator conveying device into a mounting rod (or support rod) coupling portion provided on the rear leg portion 19. During the operation of the stocker type incinerator, the front leg portion 17 of the rear grate 10 is relatively slid over the upper wall 12 of the front grate 10 due to the forward and backward reciprocating motion of the transfer device moving frame. Accordingly, the garbage or its combustion products placed in the row of the grate 10 is pressed by the front wall 16 of the grate 10 and moves downwardly along the stairs sequentially from the rear to the front. Air and combustion gas are supplied from the bottom of the incinerator, and are supplied into the incinerator through flow paths P1 and P2 in the form of gaps formed between the grates 10 forming heat and arranged in a stepwise manner. Before supplying some of the combustion gas into the incinerator, it passes through the lower flow path (Pu) formed in the lower part of the grate 10 by the upper wall 12 of the main body and the left and right side walls 14, and supply and flow of such combustion gas. In order to smooth the grate 10, the thickness of the upper wall 12 is preferably made as thin as possible so that sufficient space for the lower flow path Pu is secured.

One of the features of the present invention is that the mounting rod of the incinerator conveying device on which the grate 10 is mounted is set to each rod (40M, 40S), and correspondingly, the mounting rod coupling part provided on the rear leg portion 19 of the grate 10 40M, 40S) is formed with an angled groove portion 192 that matches the cross-sectional shape. That is, in the present design, the grate 10 is meshed and supported by using the angle bars 40M, 40S, so that when the conventional round bar is used as the mounting bar, the grate 10 rotates around the round bar, so that the load does not accumulate. Accordingly, even if the stocker-type incinerator is placed in the movable process due to the forward and backward reciprocation of the moving frame of the conveying device, the front leg portion 17 of the rear grate 10 slides relatively over the upper wall 12 of the front grate 10. During operation, wear contact with each other and subsequent damage can be minimized.

A cross-shaped rib 124 is provided inside the upper wall 12 of the grate 10. As described above, it is advantageous to make the thickness of the upper wall 12 of the grate 10 as thin as possible in order to facilitate the supply and flow of the combustion gas, but accordingly, the possibility of bending deformation in a high temperature environment inside the incinerator increases. These cross-shaped ribs 124 provided on the inside of the upper wall 12 of the grate 10 operate as a kind of reinforcing ribs, thereby significantly reducing the possibility of bending deformation of the upper wall 12 of the grate 10.

The grate 10 front shoulder 126 is configured to be raised upward. The front shoulder 126 corresponds to an area in contact with the front wall 16 of the upper wall 12 of the grate 10. These front shoulders 126 are directly exposed to the internal environment of the incinerator and are also vulnerable to wear and tear because the frequency of contact with high-temperature garbage or clinker is the highest in the process of sequentially moving waste or its combustion products from the rear to the front. . When the front shoulder 126 is raised upwardly, the movement of garbage or its combustibles from the front shoulder 126 portion to the front incineration stage is not immediately made, but is delayed until at least the next cycle reciprocating operation of the moving frame. Accordingly, the portion of the front shoulder 126 is always blocked and protected from the corrosive environment inside the incineration chamber by waste or its combustion products, so that wear damage due to corrosion may be delayed. In addition, since the trash or its combustibles with delayed movement are moved in the form of a vertical fall to the front incineration end by the reciprocating motion of the next cycle of the moving frame, the front shoulder 126 part physically rubs against the trash or its combustibles. It is advantageous that it can be reduced.

A groove 122 extending between the front and rear surfaces of the upper wall 12 of the grate 10 is provided. These grooves 122 form a gap between the front leg portions 17 of the rear grate 10, and the gaps allow the combustion gas introduced from the bottom of the incineration stage through the lower flow path Pu to the inside of the incineration chamber. It functions as a first flow path P1 to communicate with. The first flow path P1 improves combustion efficiency by introducing a large amount of combustion gas into the incineration chamber within a short period of time, and the opening 11 formed in the front wall of the grate 1 as a conventional combustion gas flow path as in FIG. 1 It is possible to suppress the problem that the combustion efficiency decreases due to clogging.

It is preferable that the groove 122 is opened to the front side and formed only to a region that slides when the rear grate 10 is reciprocated and closed to the rear side. Since the front of the groove 122 is open, trash and its combustibles are not prevented from moving forward, and the rear of the groove 122 is closed corresponding to the maximum retracted position of the rear grate 10. Garbage placed on the upper wall 12 or the groove 122 of the grate 10 or its combustion products are prevented from unintentionally leaking into the lower part of the incinerator during the reciprocating sliding process.

Meanwhile, the thickness of the upper wall 12 increases along both edges of the upper wall 12 by the formation of the groove 122, and accordingly, the wear life of the upper wall 12 is increased, which is advantageous. The depth of the groove 122 is more advantageous in terms of supplying the combustion gas, but if it is too deep, the possibility of unintentionally sweeping the waste or its combustion products into the lower part of the incinerator increases. It is desirable to determine appropriately.

A plurality of protrusions 142 are provided on one side wall 14 of the grate 10. This protrusion 142 forms another gap between the adjacent grate 10 and the side wall 14 arranged in parallel, and this gap constitutes the second flow path P2 for supplying the combustion gas. The second flow path P2 assists the first flow path P1 to provide an additional communication path for the combustion gas, thereby further improving combustion efficiency.

As described above, according to the incinerator grate 10 and its installation structure of the present invention, the mounting rods of the incinerator conveyance device on which the grate 10 is mounted are set to each bar (40M, 40S), and correspondingly, the rear leg of the grate 10 By forming the mounting rod coupling portion provided in (19) into an angled groove portion 192, even if it is stacked in a stepwise manner, the load of the grate 10 is distributed so that the load does not accumulate, so that abrasion damage can be minimized, and the grate 10 By making the front shoulder 126 in an upwardly raised shape, the wear time is delayed as much as possible, thereby extending the lifespan. In addition, bending deformation resistance and strength can be greatly improved by forming a cross rib 124 inside the upper wall 12 of the grate 10, and the upper wall 12 of the grate 10 is a supply path of the combustion gas. By forming the groove 122 and/or the sidewall 14 with a gap, it is possible to greatly improve the supply and incineration efficiency of the combustion gas.

The above description relates to a specific embodiment of the present invention. As described above, the above embodiments according to the present invention are disclosed for the purpose of explanation and are not understood to limit the scope of the present invention, and those of ordinary skill in the art will not depart from the essence of the present invention. It should be understood that various changes and modifications are possible, and all such modifications and changes may be understood to correspond to the scope of the invention disclosed in the utility model claims or their equivalents.

30M, 30S: round bar
F1, F2: fixed end
M: moving end
1: grate
11: opening
40M, 40S: Each bar
10: grate
12: upper wall
122: groove
P1: Euro 1
124: cross rib
126: front shoulder
14: side wall
142: protrusion
P2: 2nd Euro
16: front wall
17: front leg
18: rear wall
19: rear leg
192: groove
Pu: lower flow path

Claims (5)

It is applied to a stocker-type incinerator in which a plurality of grate rows are divided into a fixed end and a moving end and are alternately arranged in a stepwise manner.In the grate in which the front legs of the rear grate reciprocate on the upper wall of the front grate, provided on the rear legs of the grate A grate for an incinerator, characterized in that a groove portion matching the cross-sectional shape of each rod is provided as a mounting rod coupling portion.
The incinerator grate according to claim 1, wherein a cross rib is provided inside the upper wall of the grate.
The incinerator grate according to claim 1, wherein the front shoulder of the grate is raised upward.
The method of claim 1, wherein a groove extending between the front and the rear is provided on the upper wall surface of the grate,
The groove is opened to the front side and is formed only to a region that slides when the rear grate reciprocates and slides toward the rear, and the groove has a gap corresponding to the first flow path for supplying combustion gas between the front leg portions of the rear grate. An incinerator grate, characterized in that constituting.
The method of claim 1,
A grate for an incinerator, wherein a plurality of protrusions are provided on one side wall of the grate, and the protrusions form a gap corresponding to a second flow path for supplying combustion gas between adjacent grates arranged in parallel.

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