KR200492925Y1 - Grate for falling stage of stoker-type incinerator and installation structure theerof - Google Patents

Abstract

The present invention relates to a grate and an installation structure thereof used for a drop end forming the boundary of each incineration end in a stocker type incinerator. According to the present invention, while adopting a grate for fall-off of a structure in which horizontal and vertical elements are continuously bent at right angles, in particular, in order to minimize the possibility of falling out due to rotation torque, the inner side of the horizontal and vertical elements are closely supported and supported. At the same time, through the fall-off installation structure using the frame assembly that can be accurately coupled to the angled groove provided in the horizontal element, compared to the shape and installation shape of the grate that extends downwardly inclined to the front, it is easy to attach and detach for maintenance. While possible, it is possible to reduce the possibility of damage due to wear, and at the same time, it is possible to significantly reduce the possibility of dropping due to the forward/rear rotation torque applied during operation of the incinerator.

Description

GRATE FOR FALLING STAGE OF STOKER-TYPE INCINERATOR AND INSTALLATION STRUCTURE THEEROF}

The present invention relates to a grate and an installation structure thereof used for a drop end forming the boundary of each incineration end in a stocker type incinerator.

In general, waste such as household or industrial waste is incinerated using the stocker type incinerator 1 of FIG. 1. Stocker type incinerator (1) is a device for transporting combusted waste and has a stocker in the incineration chamber (70), and such a stocker is divided into a fixed end (10F) and a moving end (10M), and a grate that is alternately arranged in a stepwise manner. (10) It is composed of rows and operates in a manner in which the moving end 10M moves back and forth between the fixed end 10F disposed above and below it, and moves the waste sequentially down the stairs. This stocker type incinerator (1) is suitable for large-capacity incineration, and the waste input from the upper hopper is continuously and gradually moved downward by the stocker, while convective heat from the hot air in the lower part of the stocker and the combustion gas in the furnace and radiant heat from the furnace wall are prevented. It is dried and ignited and incinerated.

Meanwhile, in such a stocker type incinerator (1), the entire incineration stage is designed by being divided into a drying stage (DS), a combustion stage (CS), and a post-burning stage (PCS) according to a sequential detailed incineration process, and each incineration stage is designed as a unit. As a result, the stocker is operated independently. In this case, the boundary of each incineration end constitutes the so-called free end (FS), and the height of the free end (FS) is usually set higher than the height of the grate constituting the fixed end or moving end at each incineration end, and the fall end (FS) The row of the grate 10 immediately above is set to the fixed end (10F), and the row of the grate 10 immediately below the drop end (FS) is set to the moving end (10M).

A method of using a general castable refractory material is known as one of the installation structures for drop-blocking in a conventional stocker type incinerator. This type of fall-off installation structure uses inexpensive castable fireproof materials, so installation and maintenance costs are low, but in case of on-site construction and partial damage, the maintenance is inconvenient and clinker, a by-product of incineration, can be easily attached. There are limitations that are not suitable for the incineration of industrial wastes that are largely generated.

In order to improve the problem of the fall cut installation structure using such a general castable fireproof material, when referring to FIG. 2, the exposed step portion of the fall cut end FS is completely covered by using a fall cut grate 20 made of heat-resistant steel. The way to do it is known. This fall cut installation structure using the fall cut off grates 20 is advantageously applied not only to general wastes but also to incinerators for industrial wastes with a lot of clinker generation as clinker is minimally attached to the surface of the metal grate 20 as an incineration by-product. In addition, since it is a simple mounting method on the round bar 22, there is an advantage of easy detachment and maintenance.

However, in the fall cut installation structure using the drop cut grate 20 having such a shape and installation form, there are the following problems. Specifically, looking at the fall grate 20 and the fall cut installation structure of FIG. 2, when the waste (not shown) moves downward along the incineration end, the lower of the stairs is forward and the upper is rearward. , The rear end of the grate 20 is mounted on the round bar 22, and the front end of the grate 20 is supported in contact with the surface of the grate 10 at the lower moving end 10M. In this case, the grate 20 for dropping is designed and installed in a shape that extends downwardly inclined to the front below the incinerator so that the waste can be easily moved.Since it has this shape and installation form, wear by the waste is rather accelerated. Accordingly, there is a problem in that the damage due to thermal oxidation of the metal material itself is added, and the lifespan thereof is rapidly shortened. In addition, since the grate 20 for dropping is installed in a manner that is simply mounted on the round bar 22 having a circular cross section, there is a risk of being easily dropped out due to frictional shock during reciprocation of the moving end (10M) grate 10 row in the incinerator operation state There is this.

It is an object of the present invention to provide a drop-off grate and its installation structure, which reduces the possibility of damage due to wear and allows easy removal and installation for maintenance, while reducing the likelihood of dropping out in an incinerator operating state.

In the process of developing the free fall grate for the stocker-type incinerator and its installation structure related to the above-mentioned problem, the present inventor minimizes the possibility of damage due to abrasion and the possibility of dropping out due to the forward and backward rotation torque applied during the operation of the incinerator. In order to do so, instead of the shape and installation form of the grate extending downwardly inclined forward, we adopt a grate for fall-off with a structure in which horizontal and vertical elements are continuously bent at right angles, while minimizing the possibility of dropping out due to rotation torque. In order to do this, a fall cut installation structure using a frame assembly that can be closely attached to and supported all of the inside of the horizontal and vertical elements and at the same time can be accurately coupled to the angled grooves provided in the horizontal elements was devised. The present invention was made by further embodiing the mechanical design based on such an idea, and the subject matter of the present invention based on the above-described problem and the idea is the same as described in the claims.

(1) A free-cutting grate for integrally covering the free-cutting end forming the boundary of the incineration end of a stocker-type incinerator, a horizontal element having a mounting groove on a lower surface thereof; And a vertical element whose outer surface forms a right angle with the horizontal element and is integrally formed, and the lower end of the front side of the fixed end grate is supported on the upper surface of the horizontal element in a state where it is constructed as a drop end, and the front surface of the vertical element Great for fall cuts, characterized in that the silver is exposed toward the inside of the incinerator.

(2) The mounting groove is a grate for the free fall of (1), characterized in that the square.

(3) A portion of the lower surface of the horizontal element other than the mounting groove is provided as a support surface, and the support surface is in close contact with and supported by a frame assembly on which a fall cutting grate is mounted. great.

(4) At least one gap protrusion is formed on the side surfaces of the horizontal element and the vertical element.

(5) An installation structure for a drop end forming a boundary of an incineration end of a stocker-type incinerator, comprising: the grate for dropping according to any one of (1) to (4) above; And a frame assembly for constructing a fall end by mounting the free fall grate in parallel while being fixed to the internal facility of the incinerator, wherein the frame assembly includes all inner horizontal and vertical elements of the free fall grate. A fall cut installation structure comprising: a first cross bar for closely supporting the first cross bar, and a protrusion inserted into the mounting groove of the fall stop grate on an upper surface of the first cross bar.

(6) The installation structure of the drop-off end of (5), characterized in that the mounting groove and the protrusion are square.

(7) A portion of the lower surface of the horizontal element for the fall stop excluding the mounting groove is provided as a support surface, and a portion of the upper surface of the first transverse bar excluding the protrusion is provided as a corresponding support surface portion in close contact with the support surface. The installation structure of the fall cutoff of (5), characterized in that the.

(8) The frame assembly includes a second cross bar fixed to the internal equipment of the incinerator; And a plurality of vertical bars connecting the first cross bars and the second cross bars.

According to the present invention, while adopting a grate for fall-off of a structure in which horizontal and vertical elements are continuously bent at right angles, in particular, in order to minimize the possibility of falling out due to rotation torque, the inner side of the horizontal and vertical elements are closely supported and supported. At the same time, through the fall-off installation structure using the frame assembly that can be accurately coupled to the angled groove provided in the horizontal element, compared to the shape and installation shape of the grate that extends downwardly inclined to the front, it is easy to attach and detach for maintenance. While possible, it is possible to reduce the possibility of damage due to wear, and at the same time, it is possible to significantly reduce the possibility of dropping due to the forward/rear rotation torque applied during operation of the incinerator.

1 is a schematic structural diagram of a stocker type incinerator according to the prior art.
Figure 2 is a stocker-type incinerator installation structure according to the prior art.
Figure 3 is a perspective view of the grate for dropping according to an embodiment of the present invention.
4 is a perspective view of a frame assembly according to an embodiment of the present invention.
5 is a (a) plan view, (b) a front view, and (c) a side view of the frame assembly of FIG. 4;
Figure 6 is an assembly view between the frame assembly and the grate for a fall according to an embodiment of the present invention.
7 is a fall cut installation structure viewed from the side 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 mean that other components may be further included.

Hereinafter, for convenience of explanation, with respect to the shape or installation orientation of each component element of the stocker-type incinerator, the lower part of the staircase is forward and the upper part is rearward based on the direction in which waste (not shown) moves down along the grate column staircase. To explain.

3 is a perspective view of a grate 30 for a fall cut according to an embodiment of the present invention, FIG. 4 is a perspective view of a frame assembly 40 according to an embodiment of the present invention, and FIG. 5 is a view of the frame assembly 40 of FIG. a) a plan view, (b) a front view, and (c) a side view, and FIG. 6 show an assembly view between the grate 30 and the frame assembly 40 for dropping according to an embodiment of the present invention. The free fall installation structure includes a grate 30 for a fall cut of FIG. 3 and a frame assembly 40 of FIGS. 4 and 5.

The grate 30 for free fall according to the present invention and the installation structure for free fall using the same are intended to be applied to a stocker-type incinerator. In a stocker type incinerator, as described in FIG. 1 above, the entire incineration stage is designed to be divided into a drying stage (DS), a combustion stage (CS), and a post-burning stage (PCS) according to a sequential detailed incineration process, and each incineration stage The stocker operates independently in units of stages. This stocker is divided into a fixed end (10F) and a moving end (10M), and is composed of rows of grate (10) alternately arranged in a stepwise manner, so that the moving end (10M) is located between the fixed ends (10F) disposed above and below it. It operates in a manner of sequentially moving (50) the waste down the stairs while reciprocating back and forth. Based on the front and rear of the fall end (FS), the row of grate 10 directly above the fall end (FS) to the rear is the fixed end (10F), and the row of the grate 10 immediately below the fall end (FS) is Each is set to a moving end (10M).

First, referring to FIG. 3, the grate 30 for the free fall is provided for integrally covering the free fall end forming the boundary of the incineration end of a stocker type incinerator, and a horizontal element 310; and a vertical integrally formed therewith. It is a bent structure of element 320; The material of the fall cut-off grate 30 is a heat-resistant steel material and is manufactured by a casting method.

The horizontal element 310 is a part where the front lower end of the fixed end grate is supported on its upper surface in a state in which it is constructed as a drop end, and is mounted on the frame assembly 40 when constructed as a fall end as described below. Mounting grooves 312 for are provided. The vertical element 320 is a portion in which the front outer surface 322 is exposed toward the inside of the incinerator in a state in which it is constructed with a drop end. Accordingly, in the state of being installed at a drop end, the horizontal element 310 is concealed and only the front-side outer surface 322 of the vertical element 320 is exposed.

Since the horizontal element 310 and the vertical element 320 are bent at a'right angle', the front-side outer surface 322 of the vertical element 320 exposed while installed as a drop end also extends in a direct downward direction. Accordingly, the possibility that the waste moving along the incineration end by the operation of the stocker contacts the front-side outer surface 322 of the vertical element 320 to cause abrasion damage is significantly reduced. In addition, in the case of a structure bent at a'right angle' between the horizontal element 310 and the vertical element 320, all the insides of the horizontal element 310 and the vertical element 320 are'closed' to the frame assembly 40 to be described later. Since it can be supported firmly, the possibility of dropping out due to the forward and backward rotation torque applied during the operation of the incinerator is reduced.

It is preferable that the mounting groove 312 provided on the horizontal element 310 is provided in a rectangular shape. Since the inside of the rectangular mounting groove 312 is firmly mounted to the frame assembly 40 having a coupling element having a cross-sectional profile corresponding thereto, the possibility of dropping out due to the forward and backward rotation torque applied during the operation of the incinerator is more reliably Is prevented.

A portion of the lower surface of the horizontal element 310 except for the mounting groove 312 is provided as a support surface portion 316. The support surface portion 316 is supported by being in close contact with the frame assembly 40 on which the drop grate 30 is mounted, and thus the mounting groove 312 or the frame assembly 40 coupled thereto by the back-and-forth abduction torque applied during the operation of the incinerator. ) It is possible to prevent damage to the coupling elements and at the same time alleviate the flow or rattle between the grate 30 and the frame assembly 40 for fall.

On the other hand, the horizontal element 310 is preferably as thick as possible in terms of securing the depth of the mounting groove 312 or in terms of weight and rigidity, but the horizontal element 310 has a fixed end grate placed thereon, and the inside of the falling end in the installed state Because it is concealed, the possibility of wear or heat damage is not high. Therefore, the mounting groove 312 is set to a predetermined thickness to secure the depth and rigidity, but the inside of the mounting groove 312 is weightless to reduce material cost. On the other hand, the vertical element 320 is preferably provided in a bulk shape for a sufficient life of the free fall because it is exposed to a poor internal environment of the incineration chamber in the state of being installed as a free fall.

One or more spaced protrusions 314 and 324 are formed on the side surfaces of the horizontal element 310 and the vertical element 320. The spacing protrusions 314 and 324 form a gap between the grates 30 for free ends when arranged in parallel on the frame assembly 40. This gap serves as a passage for combustion gases such as air to improve combustion efficiency, and is also used as a space in which a hand or a tool can be inserted when the grate 30 for free fall is removed.

Next, referring to Figs. 4 and 5, the frame assembly 40 is provided to construct a fall cut by mounting the grate 30 for fall cuts in parallel, and internal facilities such as a casing of an incinerator (not shown in the drawing) ) Is fixed. The frame assembly 40 must be able to be completely in close contact with all the insides of the horizontal element 310 and the vertical element 320 of the free fall grate 30, and also provided on the horizontal element 310 of the free fall grate 30 It must have a coupling element that is coupled to the mounted mounting groove 312.

To this end, the frame assembly 40 basically includes a first cross bar 410, and the first cross bar 410 is a horizontal element bent at a'right angle' of the grate 30 for a fall end as shown in FIG. 310) and the inside of the vertical element 320 has a side profile that can be completely in close contact with the whole, and the upper surface of the first cross bar 410 is a protrusion 412 that is coupled to the mounting groove 312 of the fall grate 30 ) Is provided. In the embodiment, the first cross bar 410 is illustrated as a'a' section steel, and its outer surface is designed to be in contact with the inner side of the drop cut grate 30. A rib 414 for reinforcing rigidity is provided inside the first cross bar 410 of the'a' section steel. In addition, the cross-sectional shape of the protrusion 412 is preferably capable of being completely in close contact with the inside according to the shape of the mounting groove 312, and in the case of the rectangular mounting groove 312, it has a square shape accordingly. In addition, a portion of the upper surface of the first cross bar 410 except for the protrusion is provided as a corresponding support surface part 416, and in the installed state, the corresponding support surface part 416 is in close contact with the support surface part 316 of the fall grate 30 do. As described above through the design of the side profile and the coupling method of the grate 30 and the first cross bar 410, the free stop grate 30 is securely secured to the frame assembly 40. In addition, the possibility of wear and tear during operation of the incinerator can be minimized.

In terms of practical installation of the frame assembly 40, the frame assembly 40 further includes a second cross bar 420 and a vertical bar 430 in addition to the first cross bar 410 as shown in FIGS. 5 and 6 Can be designed. Accordingly, the planar shape of the frame assembly 40 has an English'H' shape as shown in FIG. 5A. The second cross bar 420 is disposed at the rear side of the incinerator parallel to the first cross bar 410 and is an element that is fixed to the internal equipment of the incinerator and is illustrated as a cross-section'C'. The columnar 430 serves to connect the first crossbar 410 and the second crossbar 420, and supports the first crossbar 410 and a plurality of free cut grates 30 mounted thereto with sufficient rigidity. To be able to do this, it is illustrated as a section'H' section steel. The connection between the first cross bar 410 and the second cross bar 420 and the column bar 430 is not limited and may be performed using welding or bolts.

7 shows the installation structure of a fall cut viewed from the side according to an embodiment of the present invention. As described above, a row of grate 10 is designed immediately above the freeze end FS, and a row of grate 10 is designed immediately below the moving end (10M). The lower end of the vertical element 320 of the free fall grate 30 has a length capable of covering the entire free fall step step except for a minimum spaced space from the upper surface of the moving end grate. In this case, the spacing space has a height of 10 to 20 mm so as to minimize the frictional resistance between the lower surface of the free end and the upper surface of the moving end grate and to have a minimum size capable of suppressing the inflow of foreign substances as much as possible. On the other hand, for the replacement of the grate 30 for the fall end according to the present invention, it is preferable that the support bar for the fixed end grate row installed at the rear side above the fall end is provided in the form of a round bar. The grate 30 for fall cuts to be replaced by rotating as a standard is taken out.

As described above, according to the present invention, the horizontal element 310 and the vertical element 320 are vertically bent at a right angle, while adopting the grate 30 for fall-off, in particular, in order to minimize the possibility of falling out due to rotation torque Through a fall-off installation structure using a frame assembly 40 that closely supports and supports all inner sides of the element 310 and the vertical element 320 and at the same time can be accurately coupled to the angled groove portion provided in the horizontal element 310, Compared with the shape and installation form of the grate that extends downward inclined forward, it is possible to easily attach and detach for maintenance, while reducing the possibility of damage due to wear, and at the same time, possibility of dropping due to the forward and backward rotation torque applied during operation of the incinerator. Can be significantly reduced.

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 registration claims or their equivalents.

DS: drying stage
CS: combustion stage
PCS: post combustion stage
FS: Fall break
10F: Fixed end
10M: moving end
10: grate
20: heat-resistant steel grate
22: mounting round bar
30: Great for fall break
310: horizontal element
312: mounting groove
314: gap protrusion
316: support surface portion
320: vertical element
322: front side outer surface
324: gap protrusion
40: frame assembly
410: first crossbar
412: protrusion
414: rib
416: corresponding support surface
420: second abutment
430: columnar

Claims (8)

It is a grate for fall cuts to integrally cover the fall cuts that form the boundary of the incineration end of a stocker type incinerator,
A horizontal element provided with a mounting groove at the bottom; And a vertical element having an outer surface formed at right angles with the horizontal element and integrally formed,
In the state of being constructed with a drop end, the lower end of the front side of the fixed end grate is supported on the upper surface of the horizontal element, and the outer surface of the front side of the vertical element is exposed toward the inside of the incinerator,
A portion of the lower surface of the horizontal element other than the mounting groove is provided as a support surface portion, and the support surface portion is in close contact with and supported by a frame assembly on which the fall stop grates are mounted.
According to claim 1, wherein the mounting groove is a grate for drop, characterized in that the square.
delete [2] The grate according to claim 1, wherein at least one spacing protrusion is formed on side surfaces of the horizontal and vertical elements.
It is an installation structure for the drop end that forms the boundary of the incineration end of a stocker type incinerator,
The grate for dropping according to any one of claims 1, 2 or 4; And a frame assembly configured to configure a fall end by mounting the grate for the fall cut in parallel while being fixed to the internal equipment of the incinerator.
The frame assembly includes a first cross bar for closely supporting and supporting all of the inside of the horizontal element and the vertical element of the free stop grate,
A fall cut installation structure, characterized in that a protrusion inserted into the mounting groove of the fall cut grate is provided on an upper surface of the first cross bar.
[6] The installation structure of claim 5, wherein the mounting groove and the protrusion are square.
The corresponding support according to claim 5, wherein a portion of the lower surface of the horizontal element for the fall stop excluding the mounting groove is provided as a support surface, and a portion of the upper surface of the first transverse bar excluding the protrusion is in close contact with the support surface. A fall cut installation structure, characterized in that it is provided as a face portion.
The apparatus of claim 5, wherein the frame assembly comprises: a second cross bar fixed to an internal facility of the incinerator; And a plurality of vertical bars connecting the first cross bars and the second cross bars.

Images