KR102377443B1 - Droppingstep grate for incinerator - Google Patents

Abstract

Disclosed is a grate for dropping the incinerator that can effectively prevent waste from flowing into a boundary gap between a drying end, a combustion end, and a post-incineration end during the operation of the incinerator. According to the present invention, the drying end, the combustion end, and the post-incineration end of the incinerator each include one or more moving grate rows and one or more fixed grate rows, the moving grate rows and the fixed grate rows are alternately arranged adjacent to each other, and the lower part of the front wall of the moving grate In an incinerator that reciprocates relative to the upper wall of an adjacent fixed grate, a grate that forms a falling end at the boundary between the drying end, the combustion end and the post-incineration end, and is blocked below the shear wall so as to be in contact with the upper wall of the grate of the subsequent incineration end Provided is a grate for fall blocking of an incinerator in which the wall is integrally extended.

Description

Droppingstep grate for incinerator

The present invention relates to a grate for an incinerator, and more particularly, to a grate for fall-blocking of an incinerator.

The key to the waste treatment policy is to efficiently use resources, collect the minimum amount from nature, and return the used resources to nature to preserve the natural environment and preserve human health. will be.

In general, waste such as municipal waste is put into an incinerator, and then dried, burned, and incinerated in a stoker-type transport device including heat-resistant/wear-resistant metal grates disposed on the lower side of the incinerator.

This stoka-type incinerator is composed of a drying stage for drying waste, a combustion stage for main combustion of waste, and a post-incineration stage for final combustion. The grate that transports and stirs waste from the top to the bottom consists of a fixed grate and a moving grate alternately.

In the grate constituting this stoker-type conveying device, the grate row of the incinerator is formed by a plurality of heat-resistant/wear-resistant metal grates supported by round bars to form a single row. are alternately placed

The fixed end is mounted on the fixed frame of the conveying device by the round bar for the fixed end, and the moving end is mounted on the movable frame of the conveying device by the round bar for the moving end. It operates in a way that sequentially moves waste toward the exit side while reciprocating back and forth in the

In this process, in the incinerator, as shown in Fig. 1, the boundary between the incineration stage and the incineration stage (the combustion stage 20 and the post-incineration stage 30 in Fig. 1), that is, the last row of the incineration stage (combustion stage), the falling end ( 21) and the upper wall 32 of the grate 31 of the subsequent incineration stage (post-incineration stage), a gap (G) that is generally more than the thickness of the grate is formed. As the incinerator accumulates without being treated in the incinerator, the entire incinerator does not function properly, and a worker must directly enter and remove the waste, and there is a safety problem as a person works in the incinerator.

Conventionally, in order to solve this problem, a method of filling the gap between the top wall of the grate of the falling stage and the subsequent incineration stage with a castable, which is a fire resistant reinforcement, or filling the gap with an extra grate is applied.

However, in the method of filling the castable, the castable is damaged by heat (see FIG. 1, dotted line circle), and accordingly, a gap is generated again, and there is a problem that waste and the damaged castable are introduced into this part together. , the method of backfilling with an extra grate is not only difficult to completely block the inflow of waste, but also has problems in incinerator operation efficiency and safety due to its weight.

[Prior Patent Literature]

- Japanese Patent Laid-Open No. 2016-211835 (2016.12.15)

- Registered Utility Model Publication No. 20-0471741 (2014.03.11)

The present invention has been devised to solve the problems of the prior art, and it is possible to effectively prevent waste from flowing into the boundary gap between the drying stage, the combustion stage and the post-combustion stage during the operation of the incinerator. would like to provide

In order to solve the above problems, the present invention provides that the drying end, the combustion end, and the post-incineration end of the incinerator include one or more moving grate rows and one or more fixed grate rows, respectively, and the moving grate rows and the fixed grate rows are alternately arranged adjacent to each other. In an incinerator in which the lower part of the front wall of the moving grate reciprocates relative to the upper wall of the adjacent fixed grate, a grate forming a falling end at the boundary between the drying end, the combustion end and the post-incineration end, the grate upper wall of the subsequent incineration end To provide a grate for fall-blocking of an incinerator in which a barrier wall is integrally extended below the shear wall to be in contact with the incinerator.

In addition, the grate for falling off provides a grate for the fall of the incinerator, characterized in that the fixed grate.

In addition, the thickness of the barrier wall provides a grate for fall blocking of the incinerator, characterized in that less than 1/2 of the thickness of the shear wall.

In addition, the fall-blocking grate provides a fall-breaking grate of an incinerator, characterized in that transverse ribs are formed at regular intervals on the lower surface of the upper wall.

In addition, the drop-blocking grate provides a fall-breaking grate of an incinerator, characterized in that the partition wall is formed in the longitudinal direction on the lower surface of the upper wall.

According to the present invention, as a grate forming a falling cutoff at the boundary between the drying end, the combustion end, and the post-incineration end in an incinerator, the barrier wall is integrally extended below the shear wall so as to be in contact with the upper wall of the grate of the subsequent incineration end. During operation, it is possible to completely block the inflow of waste into the boundary gap between the drying stage, the combustion stage and the post-incineration stage, thereby improving incineration efficiency and lifespan of the incinerator, and improving the operation safety of the incinerator by minimizing the removal of waste by the operator. there is.

In addition, by adopting a structure that minimizes the thickness of the barrier wall of the grate that forms the fall block, it is possible to fundamentally prevent the inflow of waste and to minimize the decrease in the operating efficiency of the incinerator due to the structural deformation of the grate.

In addition, transverse ribs and longitudinal partition walls are formed at regular intervals on the lower surface of the upper wall of the drop grate to minimize fatigue stress due to fatigue load that may increase during incinerator operation due to the extension of the barrier wall.

1 is a picture of an incinerator showing a case in which a grate for fall blocking according to the present invention is applied and not applied at the boundary of the incinerator;
2 to 6 are a perspective view, a plan view, a bottom view, a side view, and a bottom perspective view of a grate for fall blocking according to an example of the present invention, respectively;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, if it is determined that a detailed description of a related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted. In order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are given to similar parts throughout the specification, and the detailed configuration direction of the present invention will be described with reference to the drawings. Also, throughout the specification, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

2 to 6 are respectively a perspective view, a plan view, a bottom view, a side view, and a bottom perspective view of a drop-blocking grate according to an example of the present invention.

2 to 6 , in the drop-blocking grate 100 according to the present invention, the blocking wall 120 is integrally extended below the shear wall 110 so as to be in contact with the upper wall 210 of the grate 200 at the subsequent incineration end. is formed

In general, in an incinerator, the drying end 10, the combustion end 20, and the post-incineration end 30 each include one or more moving grate rows and one or more fixed grate rows, and the moving grate rows and the fixed grate rows are alternately adjacent to each other. is disposed, and the lower part of the shear wall of the moving grate slides relative to the upper wall of the adjacent fixed grate, and the shear wall of the moving grate moves the waste by pushing the waste located on the upper wall of the fixed grate. As shown in FIG. 1, the incineration stage and The boundary of the incineration end (refer to the combustion end 20 and the post-incineration end 30), that is, generally between the falling end 21, which is the last row of the incineration end, and the upper wall 32 of the grate 31 of the subsequent incineration end. A gap (G) greater than the thickness of the grate is formed, and when the incinerator is operated, the waste moved into this gap (G) flows in and is not treated on the incinerator and is accumulated at the bottom of the incinerator.

However, in the present invention, the blocking wall 120 is integrally formed to extend below the shear wall 110 from the grate 100 at the falling end, and the upper wall 210 of the grate 200 at the incineration end followed by the blocking wall 120 ), it is possible to fundamentally prevent the inflow of waste, thereby solving all of the above-mentioned problems.

In the present invention, in order to prevent a space from being generated between the grate 100 at the falling end and the grate 200 at the incineration stage that follows, the blocking wall 120 has a lower surface of the grate 200 at the incineration stage that follows. ), it is of course preferable to have a length in close contact with the upper wall 210, and it is of course preferable that the lateral length L1 of the blocking wall 120 is the same as the lateral length L2 of the shear wall 110 .

The lower surface of the blocking wall 120 is not in close contact with the upper wall 210 of the grate 200 at the subsequent incineration end, or the lateral length L1 of the blocking wall 120 is the lateral length of the shear wall 110 . If it is shorter or longer than (L2), waste may be introduced into the space generated between the grate 100 for the fall cut-off and the grate 200 for the subsequent incineration stage.

According to an example of the present invention, the grate 100 for the fall blocking may be a fixed grate. When the drop-blocking grate 100 is configured as a fixed grate, it is possible to minimize the possibility of deterioration of the incinerator operation efficiency and damage to the grate due to movement due to the relatively increased grate weight.

Also, according to an example of the present invention, the thickness T1 of the blocking wall 120 may be less than 1/2 of the thickness T2 of the shear wall 110 . That is, it may be considered to structure the thickness T1 of the barrier wall 120 to be the same as the thickness T2 of the shear wall 110 , but the thickness of the barrier wall 120 is within the limit to fundamentally prevent the inflow of waste. When (T1) is minimized, it is possible to minimize a decrease in the incinerator operation efficiency due to an increase in weight according to the structural deformation of the grate 100 . However, if the thickness L1 is excessively thin, there is a risk of damage due to continuous operation of the incinerator. Therefore, the thickness T1 of the barrier wall 120 is preferably 1/10 of the thickness T2 of the shear wall 110 . It may be more than 1/2 or less, more preferably 1/5 or more and 1/3 or less.

According to an example of the present invention, in the drop-blocking grate 100 , transverse ribs 140 may be formed at regular intervals on the lower surface of the upper wall 130 , and the transverse ribs 140 are recessed in a concave shape according to the formation. A portion 150 may be formed.

Here, in the drop-blocking grate 100 , a partition wall 160 is formed on the lower surface of the upper wall 130 in the longitudinal direction to partition a portion of the lower surface. Since the transverse rib 140 and the longitudinal partition wall 160 are formed on the drop-blocking grate 100, fatigue loading that may be increased during operation of the incinerator due to the extension of the blocking wall 120 It is possible to disperse the fatigue stress in the stress range section, which is affected by fatigue cracking, and, when the shape of the depression 150 is concave, it is stable to stress in any direction, so the effect can be maximized. there is. In this case, in order to maximize the effect of dispersing fatigue stress, the longitudinal length L3 of the partition wall 160 may be 0.5 to 0.9 times the length of the grate L4, and preferably 0.6 to 0.8 times.

7 is a perspective view showing a state in which a drop-blocking grate according to an example of the present invention is installed, and FIG. 1 is a photograph of an incinerator showing the case in which the fall-breaking grate according to the present invention is applied and not applied at the boundary of the incineration stage. 1 shows a grate 100 having a barrier wall 120 formed in accordance with the present invention applied to the drop-blocking grate 100 at the boundary between the drying end 10 and the combustion end 20 .

7 and 1 , the incineration stage (the combustion stage 20 in FIG. 7 ) is followed by the barrier wall 120 of the grate 100 for the fall break of the incineration stage (the drying stage 10 in FIG. 7 ). As the grate 200 is closely attached to the upper wall 210, there is no space between the drop-blocking grate 100 and the subsequent incineration grate 200, thereby preventing the inflow of waste, and thus incineration efficiency and incinerator lifetime It not only improves the efficiency of the incinerator, but also minimizes the worker's waste removal work, making it possible to operate the incinerator safely.

Above, preferred embodiments of the present invention have been described in detail with reference to the drawings. The description of the present invention is for illustrative purposes, and those skilled in the art to which the present invention pertains will understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention.

Accordingly, the scope of the present invention is indicated by the following claims rather than the description of the invention, and all changes or modifications derived from the meaning, scope, and equivalent concept of the claims are interpreted as being included in the scope of the present invention. should be

10: drying stage 20: combustion stage
30: post combustion stage G: incineration stage boundary gap
100: grate for fall blocking 110: shear wall
120: barrier wall 130: upper wall of the grate for falling
140: transverse rib 150: depression
160: partition wall 200: grate of the subsequent incineration group
210: upper wall of the grate of the subsequent incineration stage L1: lateral length of the barrier wall
L2 : Transverse length of shear wall T1 : Thickness of barrier wall
T2 : thickness of shear wall L3 : longitudinal length of partition wall
L4: grate length

Claims (5)

The drying end, the combustion end, and the post-incineration end of the incinerator each include one or more moving grate rows and one or more fixed grate rows, wherein the moving grate rows and the fixed grate rows are alternately disposed adjacent to each other, and the lower portion of the front wall of the moving grate is adjacent to each other. In an incinerator that reciprocates relative to the upper wall of a fixed grate, a grate for forming a falling end at the boundary between the drying end, the combustion end, and the post-combustion end,
A grate for fall blocking of an incinerator in which a barrier wall is integrally extended vertically downward of the shear wall so as to be in contact with the upper wall of the grate of the subsequent incineration stage,
The drop-blocking grate is a fixed grate,
The thickness of the barrier wall is 1/10 or more and 1/2 or less of the thickness of the shear wall. delete delete According to claim 1,
The fall-blocking grate is a fall-breaking grate of an incinerator, characterized in that transverse ribs are formed at regular intervals on the lower surface of the upper wall. 5. The method of claim 4,
The drop-blocking grate is a fall-breaking grate of an incinerator, characterized in that the partition wall is formed on the lower surface of the upper wall in the longitudinal direction.

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