KR101277484B1 - A grate - Google Patents

Abstract

PURPOSE: A grate for incinerating waste is provided to prevent the waste from falling through a gap between the grate units to a lower part by mutually connecting to prevent the upper surface of the grate unit which is sequentially arranged from generating a gap. CONSTITUTION: A grate unit(100) of a grate to incinerate waste comprises a slab unit(110), a front surface unit(120), and a finishing member(140). The front surface unit includes a space unit and a communication path. The finishing member is formed between the lower surface of the slab unit and a bottom plate(122) of the front surface unit. The upper end of the finishing member of the face-contact is contacted to the lower surface of the slab unit to seal one side of the space unit and the lower end of the face-contact to the bottom plate.

Description

Grate for waste incinerator {A grate}

The present invention relates to a grate constituting a waste incineration device, and more particularly, to a grate for waste incineration device that can clean itself of foreign matter caught in the air discharge groove by having an air discharge groove and a scraper to be bonded to each other.

In general, a stoker type incinerator which uses the bottom surface of the combustion chamber as a grate to burn household waste or industrial waste by incineration or burn solid fuel (RDF, RPF, WOOD CHIP, etc.) is widely used. In such an incinerator, after the waste or solid fuel is put into a combustion chamber, a grate composed of a plurality of grate units is dried, burned, and burned by a driving system.

Here, the grate is an image surface constituting the bottom surface of the combustion chamber is made of a heat-resistant, wear-resistant metal material. Accordingly, the grate should have a structure that can continuously transport and stir the injected waste and supply uniform combustion air to the entire burn surface, and is in direct contact with high temperature waste during combustion and directly exposed to high temperature. It must be designed and have a structure suitable for continuous operation for a long time.

This conventional grate is composed of a plurality of grate units having the same shape supported by the support bar 6 and the support bar 6, as shown in FIG. The grate unit has a rectangular main body 1 and a front part 5 bent at right angles to the main body 1 at the front of the main body and a recess 2 at the rear of the main body 1, and burns on the image surface. An air supply hole 3 for supplying the air for air is formed through the front part. Accordingly, the concave portion 2 is arranged to surround the upper semicircular cross section of the support bar 6 so that one side of the plurality of grate units is arranged to span the support bar 6 while maintaining a constant distance from each other.

The grate receives the combustion air through the air supply hole 7 in the incineration process of the waste, and continuously incinerates the waste delivered to the burn surface. The waste incinerated at the burn surface is transferred from the upper side to the lower side through the arrangement relationship between the alternately arranged fixed grate and the movable grate. In this process, the air supply hole 7 is blocked by the waste incinerated, so that it is impossible to supply uniform combustion air to the entire image surface. This not only acts as a cause of lowering the overall incineration efficiency, but also has a problem of increasing operating costs by preventing long-term operation.

In addition, since the individual grate units are fastened to the support bar, the gap between grate units is widened, so that when exposed to heat such as RPF, plastics, vinyls, etc. There was a problem that the melt falls to the lower part through the gap to cause a fire.

The present invention is to solve the above problems, by forming an air discharge groove so as to form a predetermined depth from the lower surface of the front portion of the grate unit and by providing a scraper to be combined with the air discharge groove on the upper surface of the plate portion It is to provide a grate for a waste incineration device that can clean itself of foreign matter caught in the air discharge groove.

In addition, the present invention is to provide a grate for waste incineration apparatus that can prevent the falling of the waste downward through the gap between the grate units by connecting the upper surface of the grate units arranged in series so as not to generate a gap. .

In addition, the present invention is to provide a grate for waste incineration apparatus that can be uniformly cooled by configuring the flow path so that the cooling water passes through both the flat portion and the front portion of the grate unit.

In addition, the present invention is to provide a grate for waste incineration device that is easy to supply and control the cooling water by connecting the flow paths of the plurality of grate units arranged in succession through the connecting tube.

In order to achieve the above object, the present invention in the grate is arranged in a plurality of grate units are arranged consecutively adjacent to each other so as to form a row and the row is a step, the grate unit, waste is incinerated The upper surface forming the image surface is provided, the linear flow path partitioned by the first partition, the second partition and the third partition therein so that the coolant flowing in and out through the inlet and outlet can cool the upper surface Plate part comprising a; And at least one air discharge groove formed at a predetermined depth in the lower surface thereof, the predetermined length extending downward from one end of the flat plate portion, and a space portion formed at a predetermined depth inward at one side thereof. A connecting passage is formed by the first and third partitions which are spaced on both sides of the second partition and the second partition to communicate with the flow path, respectively, and an incision is formed in the lower part of the first partition and the third partition. And a front part including a communication path communicating adjacent connection paths with each other, wherein an upper end is closed between the lower surface of the plate part and the bottom plate of the front part so as to seal one open side of the space part. Provides a grate for waste incineration apparatus, characterized in that the finishing member is interviewed with the surface and the bottom end is interviewed with the bottom plate.

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Preferably, the finishing member may be coupled by welding.

Preferably, the upper surface of the flat plate portion is provided with a scraper protruding in a shape corresponding to the air discharge groove, foreign matter of the air discharge groove of the grate unit disposed on the upper surface side of the flat plate portion can be removed by the scraper. have.

Preferably, the grate unit has at least one assembling hole and includes a pair of side wall portions extending a predetermined length downwardly at the front and rear ends of the flat plate portion, and the grate unit includes at least some of the side wall portions of the grate units adjacent to each other. Are each fixed through a fixing member inserted into the assembly hole to be interviewed with each other may be connected so that there is no gap between the flat plate portions of the neighboring grate unit.

Preferably, the inlet of the grate unit is disposed in the center of the grate unit disposed in the center of the three grate units arranged to be adjacent to each other connected via the connection tube and the outlet of the grate unit disposed on the left side The outlet of the grate unit may be connected to the inlet of the grate unit disposed on the right side and the flow paths of a plurality of grate units disposed adjacent to each other by a connection tube.

Preferably, the side wall portion is provided with an arrangement groove which is formed in a predetermined depth in the middle of the length may be disposed in the middle of the length of the connection tube.

According to the present invention, there is an advantage of easy maintenance by forming a grooved air discharge groove on the lower surface of the front portion and having a scraper on the upper surface of the flat plate to clean the air discharge groove by itself by a scraper.

In addition, the present invention has the advantage of preventing the fire by preventing the falling of the waste through the gap between the grate units by connecting the upper surface of the grate units arranged in series so as not to generate a gap.

In addition, the present invention forms a plurality of flow paths partitioned through the partition wall inside the grate unit, and the cooling water to increase the cooling efficiency of the grate unit by zigzag flow both inside the flat plate and the front portion through the flow path There are advantages to it.

Furthermore, the present invention has an advantage of easily supplying and controlling the cooling water by connecting the flow paths of the plurality of grate units continuously arranged through the connecting tube.

1 is a schematic view showing a conventional grate unit.
Figure 2 is a perspective view of the grate unit constituting the grate for the waste incineration apparatus according to the present invention.
3 is a sectional view taken along line XX of FIG.
4 is an exploded view of FIG. 2;
5 is a partial cutaway view showing the internal structure of the flat plate in FIG.
Figure 6 is a partial cutaway and separation view showing the internal structure of the front portion in FIG.
Figure 7 is a bottom perspective view showing the connection of the grate unit constituting the grate for the waste incineration apparatus according to the present invention.
8 is a perspective view showing a first modification of the grate unit constituting the grate for the waste incineration apparatus according to the present invention.
9 is a perspective view showing a second modification of the grate unit constituting the grate for the waste incineration device according to the present invention.
10 is a view showing the lamination relationship of the grate unit in the grate for waste incineration apparatus according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

In order to facilitate understanding of the present invention, the same reference numerals will be used to denote the same constituent elements even if they are shown in different drawings.

The grate for waste incineration device according to the present invention is a grate in which a plurality of grate units (100, 100 ', 100 ") are continuously mounted to the support bar (6) to form the bottom surface of the combustion chamber, as shown in FIG. An air discharge groove 126 is formed on the lower surface of the front part 120 of the unit 100, 100 ′, 100 ″ so as to be formed at a predetermined depth upward, and the air discharge groove 126 is formed on the upper surface of the flat plate 110. By providing a corresponding scraper 128, there is a technical feature that the foreign matter attached to the air discharge groove 126 by the scraper 128 can be removed by itself during operation.

Here, a plurality of grate units 100, 100 ', 100 "may be continuously arranged on the support bar 6 to form a fixed grate or a mobile grate.

These grate units 100, 100 ′, 100 ″ include a flat plate 110 and a front face 120.

The flat plate 110 is formed of a rectangular plate-like member having a predetermined width, the flat upper surface 111 constitutes an image surface for incineration of waste in the incinerator. In addition, the front part 120 is provided to extend a predetermined length downward from the end of the flat plate 110 so that the lower end may contact the upper surface 111 of the grate unit arranged in a plurality of rows.

At this time, at least one air discharge groove 126 is formed on the lower surface of the front portion 120 is formed to be cut to a predetermined depth. The air discharge groove 126 is for supplying the air required in the incineration process to the image surface side. In addition, the upper surface of the flat plate 110 is provided with a scraper 128 is formed to protrude a predetermined height in a shape corresponding to the air discharge groove 126. Typically, the grate constitutes one row that is continuously arranged adjacent to each other such that one side of the plurality of grate units is mounted on the support bar as shown in FIG. 10, and the grate is arranged in a plurality of rows to form a step. The plurality of rows alternately become a fixed grate and a moving grate. When the grate units 100, 100 ′ and 100 ″ are arranged in this manner, the grate units 100, 100 ′ and 100 ″ according to the present invention are adjacent to the air discharge grooves 126 formed on the lower surface of the front part 120. It is matched with the scraper 128 of the grate units 100, 100 ', 100 "arranged in a row. Accordingly, one side of the grate units 100, 100', 100" arranged at the bottom or the top, the left or the right is left, When moved in the right direction, even if foreign matter or incineration sticks to the air discharge groove 126 in the incineration process and operation process, the foreign matter or incineration stuck by the scraper 128 can be removed.

To this end, the grate units 100, 100 ', 100 "according to the present invention may be provided with only one or both of the air discharge grooves 126 and the scraper 128, depending on the arrangement position. (FIGS. 2, 8) , See FIG. 9)

On the other hand, the grate unit (100, 100 ', 100 ") includes a pair of side wall portion 130 extending a predetermined length downward on the line, the rear end of the flat plate portion 110. The side wall portion 130 is supported A typical mounting groove 136 for mounting the grate units 100, 100 ', 100 "to the bar is cut in one side, and at least one assembly hole for fixing the grate units 100, 100', 100" adjacent to each other therein. 132 is penetrated.

Accordingly, the grate for the waste incineration device according to the present invention is disposed adjacent to each other through a fastening member 135 such as a bolt member after continuously arranging a plurality of grate units (100, 100 ', 100 ") to each other to constitute a grate. At least some of the side wall portions 130 of the grate units 100, 100 ', and 100 "are interviewed with each other. (See FIG. 7) In this case, the side wall portions 130 are formed from an end of the upper surface 111 of the plate portion. It is provided so as not to protrude to the outside. As a result, the upper surfaces 111 of the grate units 100, 100 ′, 100 ″ which are adjacent to each other are connected to each other without a gap, and thus gaps do not occur as shown in FIG. 10, and thus are present on the upper surface of the flat plate 110. By preventing the incineration from falling between the grate units (100, 100 ', 100 "), it is possible to prevent the fire caused by the falling objects in the hopper of the incinerator. In addition, when the combustion air is supplied to the lower side of the grate unit 100, 100 ′, 100 ″, there is no gap between the grate units 100, 100 ′, 100 ″, and thus the air discharge grooves formed in the lower surface of the front part 120 ( 126), only combustion air is discharged, so that uniform supply of combustion air is possible. This makes it possible to stably maintain the combustion atmosphere in the combustion chamber.

Such a grate unit (100, 100 ', 100 ") is arranged in the support bar 6 in a plurality can be configured to constitute a grate for waste incineration device. Here, grate unit (100, 100', 100" according to the present invention) ) May be an air cooled grate unit or a water cooled grate unit.

On the other hand, when the grate unit (100, 100 ', 100 ") constitutes a grate for waste incineration device, the cooling water may constitute a water-cooled grate to circulate the inside of the grate unit to cool the upper surface of the flat plate 110, which is an image surface. To this end, an inlet 113 and an outlet 114 are provided on the lower surface of the flat plate 110 so that the coolant flows to the inner space and then discharged therein. The 114 may be provided in the flange 119 in such a manner that the flange 119 is coupled to the opening 118 that is open to the bottom surface of the flat plate 110 in a predetermined area. When the flange 119 having the oil and the inlet on the lower surface of the 110 is coupled, in particular, it is possible to facilitate the manufacture.

At this time, the internal space of the grate unit through which the coolant flows through the inlet 113 is divided into a plurality of partitions by at least one partition wall 115 as shown in FIG. 5 to form a flow path 112 through which the coolant flows. Done. In addition, the plurality of flow paths 112 formed by the partition wall 115 communicate with each other in a zigzag manner.

Hereinafter, for convenience of description, it is assumed that three partition walls 115 are provided so that four flow paths 112 are formed. Of course, the number of partitions is not limited thereto, and it should be understood that at least one suitable number may be provided.

That is, the partition wall 115 includes a second partition wall 115b disposed at the center portion, and a first partition wall 115a and a third partition wall 115c disposed at intervals on both sides of the second partition wall 115b. . In addition, the second partition wall 115b has a left end portion having a length shorter than that of the first partition wall 115a and the third partition wall 115c with reference to FIG. The furnace 112b and the third flow path 112c are connected to each other. Here, the first partition wall (115a), the second partition wall (115b) and the third partition wall (115c) is a right end portion extends to the space portion formed on one side of the front portion 120, so that the space portion a plurality of connection paths ( 121). The first flow path 112a and the second flow path are provided at the lower portions of the first partition wall 115a and the third partition wall 115c, respectively, as shown in FIG. 6. The furnace 112b, the third flow path 112c and the fourth flow path 112d are respectively connected.

Accordingly, the coolant introduced through the inlet 113 is circulated along the plurality of flow paths 112 partitioned by the partition wall 115 to cool the upper surface of the flat plate 110 and then the outlet ( Through 114). That is, the coolant introduced through the inlet 113 flows in the right direction along the first flow path 112a based on the drawing of FIG. 5 and through the first communication path 117a formed in the first partition wall 115a. After moving to the second flow path 112b and flowing in the left direction, it is moved to the third flow path 112c through the passage path 116. The coolant moved to the third flow path (112c) flows again to the left direction and is moved to the fourth flow path (112d) through the second communication path (117b) formed in the third partition wall (115c) to the fourth flow path After flowing to the left along 112d, it is discharged through the outlet 114.

On the other hand, the front portion 120 is formed on the one side of the inner space of the flat plate 110-more specifically, the space portion in communication with each other and the flow path 112 is formed to a predetermined depth inwardly. As described above, the space is partitioned by the plurality of partitions 115 to form a plurality of connection paths 121. Accordingly, the coolant flowing through the inlet 113 flows along the first flow path 112a, moves to the first connection path 121a, and flows to the lower side, and is formed at the bottom of the first partition wall 115a. It is moved to the second connection path 121b through the first communication path 117a. Thereafter, the second flow path 121b moves to the second flow path 112b in communication with each other. Similarly, the coolant flowing along the third flow path 112c is moved to the third connection path 121c and flows to the lower side, and then through the second communication path 117b formed under the third partition wall 115c. It is moved to the fourth connection path (121d), and moved to the fourth flow path (112d) side in communication with the fourth connection path (121d) is discharged through the outlet 114.

In addition, a closing member 140 is coupled to an open portion between the lower surface of the front portion 120 and the bottom plate 122 of the front portion 120 to seal the open portion so that the coolant leaks to the outside. Will be prevented.

At this time, the upper surface of the closing member 140 on one side so that the cooling water moved from the flow path 112 to the connection path 121 side, or from the connection path 121 to the flow path 112 side smoothly. The overflow part 142 which has a curved part is protruded. The overflow portion 142 is provided to have a height substantially equal to the thickness of the bottom surface of the flat plate 110 and is provided to have the same number as the number of the formation of the flow path (112).

Thus, the grate unit (100, 100 ', 100 ") constituting the grate for the waste incineration apparatus according to the present invention by forming a flow path so that the coolant circulates both inside the flat portion 110 and the front portion 120 in a zigzag manner Cooling efficiency can be increased by uniformly cooling the grate unit 100, 100 ′, 100 ″.

On the other hand, the grate for waste incinerator according to the present invention is arranged so that a plurality of grate units (100, 100 ', 100 ") arranged in succession next to each other can be cooled through a single supply of cooling water. As illustrated, the outlet 114 of the first grate unit A disposed on the right side of the three grate units arranged adjacent to each other is the inlet 113 and the connection tube of the second grate unit B disposed at the center. 150, and the outlet 114 of the second grate unit B is connected to the inlet 113 of the third grate unit C disposed on the left side via the connection tube 150. Accordingly, the flow paths 112 of the grate units 100, 100 ′ and 100 ″ consecutively arranged adjacent to each other are connected to one through the connection tube 150. Accordingly, when the cooling water is supplied through the inlet 113 of the grate unit A disposed at the rightmost side, the cooling water circulates inside the plurality of grate units, and then the outlet of the grate unit C disposed at the leftmost side. Finally discharged through 114. As described above, the grate for waste incineration device according to the present invention is connected to one of the flow paths of the plurality of grate units 100, 100 ′ and 100 ″ by the connection tube 150, so that the cooling water is not only easily supplied, but also the grate unit through the coolant. Cooling temperature control becomes easier.

Here, the side wall portion 130 may be provided with an arrangement groove 134 is formed in a predetermined depth so that the middle of the length of the connection tube 150 can be disposed.

According to the present invention, the cooling efficiency of the grate unit is increased by forming a plurality of flow paths partitioned through the partition walls in the grate unit and allowing the coolant to flow in both the flat part and the front part through the flow path in a zigzag manner. There are advantages to it.

In addition, the present invention has the advantage that it is easy to supply and control the cooling water by connecting the flow paths of the plurality of grate units that are continuously arranged through the connecting tube.

Furthermore, the present invention has the advantage of easy maintenance by forming a grooved air discharge groove on the lower surface of the front portion and having a scraper on the upper surface of the flat plate to clean the air discharge groove itself by a scraper.

Although specific embodiments of the present invention have been described in more detail with reference to the drawings, the present invention is not limited to such specific structures. Those skilled in the art will be able to easily modify or change without departing from the technical spirit described in the claims below. It is to be expressly understood, however, that equivalents, modifications and substitutions through such simple design variations or modifications are expressly included within the scope of the present invention.

100,100 ', 100 ",: Grate unit for waste incinerator
110: flat plate portion 111: upper surface
112,112a, 112b, 112c, 112d: flow path
113: inlet 114: outlet
115, 115a, 115b, 115c: bulkhead 116: passage
117a, 117b: communication path 118: opening
119: flange 120: front
121,121a, 121b, 121c, 121d: connection
122: bottom plate 126: air discharge groove
128: scraper 130: side wall portion
132: Assemblyman 134: Placement groove
135: fastening member 136: mounting groove
140: finishing member 142: overflow portion
150: connecting tube

Claims (11)

A grate in which a grate unit is continuously arranged to be adjacent to each other to form a row and arranged in plural so that the row forms a step,
The grate unit,
It is provided with an upper surface constituting an image surface in which waste is incinerated, and partitioned by a first partition wall, a second partition wall and a third partition wall to cool the upper surface of the coolant flowing in and out through the inlet and the outlet. A flat plate including an axial flow path; And
The second surface is provided with at least one air outlet groove which is formed at a predetermined depth in the lower surface thereof, and extends a predetermined length downwardly from one end portion of the flat plate portion, and a space portion which is formed at a predetermined depth in one side in the center is disposed at the center. The first and third partitions are partitioned by the first and third partitions spaced apart from both sides of the barrier rib and the second barrier rib to form a connection path communicating with each of the flow paths, and are formed in the lower portion of the first barrier rib and the third barrier rib. It includes; a front portion including a communication path for communicating with neighboring connection paths;
Between the bottom surface of the plate portion and the bottom plate of the front portion is characterized in that the upper end is interviewed with the bottom surface of the plate portion and the bottom end is interviewed with the bottom plate so as to seal the open side of the space portion is coupled. Grate for waste incinerator. delete delete delete delete delete The method of claim 1,
The finishing member grate for waste incineration device, characterized in that coupled through welding. The method of claim 1,
The upper surface of the plate portion is provided with a scraper protruding in a shape corresponding to the air discharge groove is waste, characterized in that the foreign material of the air discharge groove of the grate unit disposed on the upper surface side of the flat portion is removed by the scraper Grate for incineration. The method of claim 1,
The grate unit has at least one assembly hole and includes a pair of side wall portions extending a predetermined length downwardly at the front and rear ends of the flat plate portion, and the grate unit is configured such that at least some of the side wall portions of neighboring grate units are interviewed with each other. The grate for waste incineration device, characterized in that the gap between the plate portion of the grate unit adjacent to each other is fixed through the fixing member inserted into the assembly hole. The method of claim 9,
The inlet of the grate unit is connected to the outlet of the grate unit disposed in the center of the three grate units are arranged adjacent to each other, the inlet of the grate unit is connected to the outlet of the grate unit disposed on the left side and the outlet of the grate unit disposed in the center The grate for waste incineration device, characterized in that the flow path of the plurality of grate units disposed adjacent to each other by being connected through the inlet and the connection tube of the grate unit disposed on the right side is connected to one. The method of claim 10,
The side wall portion of the grate for the waste incineration device, characterized in that the groove is provided with an arrangement groove is formed in a predetermined depth in the middle of the length of the connection tube is disposed.

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