JP3231929U - Side grate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a side grate that prevents melting damage due to high heat and, in addition, prevents peeling and falling off of a refractory material so that it can be used stably for a long period of time. SOLUTION: A refractory material 7 is closely arranged on an upper part of an internal space of a side grate 3 provided with left and right side surfaces, and a protrusion 10 is formed on the upper part of the internal space of the side grate 3 and comes into contact with the protrusion 10. The refractory material 7 was loaded in this state, and a locking steel was placed to prevent the loaded refractory material 7 from falling off. [Selection diagram] Fig. 2

Description

The present invention relates to the side grate, and in particular, by arranging the refractory material in close contact with the upper part of the internal space of the side grate, it is possible to prevent melting damage due to high heat of the side grate, and in addition, the refractory material. It is related to the side grate that prevents peeling and falling off and enables stable use for a long period of time.

Generally, a stoker-type incinerator that incinerates waste such as municipal waste is configured to burn the input waste while transferring it on the stoker.
This stoker furnace has a fixed grate that is combined in parallel in the left-right direction and a movable grate that is also combined in parallel in the left-right direction. Arranged alternately in the flow direction of goods), the movable grate train reciprocates in the flow direction of wastes at a constant pitch by a drive device such as a hydraulic cylinder, and from the upstream while stirring the wastes on each stoker. It is designed to be transferred downstream.
In this stoker-type incinerator, in addition to the high temperature inside the incinerator, the grate constantly moves back and forth, so it is required to have heat resistance and wear resistance.
Under such circumstances, the technique of Patent Document 1 has been proposed as a technique relating to a grate having heat resistance.

JP-A-2017-78534

The technique of Patent Document 1 is a technique in which refractories are applied to the front surface of the grate and the upper surface of the grate, which are exposed to severe corrosion conditions on the combustion side surface of the grate, and covered with the refractory.
However, the technique of Patent Document 1 has a problem that the refractory material coated on the surface of the grate is easily peeled off or dropped off due to contact with the processed material that transfers the hearth.
Further, since the grate is exposed to an environment of high temperature corrosion, the refractory is severely burned, and it is difficult to secure the durability.

The present invention has been made to solve such a conventional problem, and the purpose of the present invention is to arrange the refractory material in close contact with the upper part of the internal space of the side grate. An object of the present invention is to provide a side grate that can be used stably for a long period of time by preventing melting damage due to high heat of the grate and, in addition, preventing peeling and falling off of the refractory material.

As a means for achieving the above object, the side grate according to claim 1 is characterized in that the refractory material is arranged in close contact with the upper part of the internal space of the side grate.

The side grate according to claim 2 is characterized in that, in the side grate according to claim 1, a protrusion is formed on the upper part of the internal space of the side grate, and a fireproof material is arranged in contact with the protrusion. To do.

In the side grate according to claim 3, in the side grate according to any one of claims 1 to 2, the fireproof material is closely arranged on the upper part of the internal space of the side grate provided with the left and right side surfaces, and the fireproof material is loaded. It is characterized by arranging locking steel to prevent the material from falling off.

In the side grate according to claim 4, in the side grate according to claim 3, the locking steel has an elongated rod shape, is inserted into the insertion holes on the left and right side surfaces, and is hung between both side surfaces. ..

The side grate according to claim 5 is characterized in that, in the side grate according to claim 4, insertion holes are formed at a plurality of positions on the left and right side surfaces of the side grate.

The side grate according to claim 6 is characterized in that, in the side grate according to any one of claims 1 to 5, the refractory material is filled with a clay-like material and fired and solidified.

Since the side grate of the present invention is arranged in a state where the refractory material is in close contact with the upper part of the internal space, it is possible to prevent the side grate from being melted due to the high heat of the stoker furnace and improve the durability of the side grate.
A protrusion was formed on the upper part of the internal space of the side grate, and the refractory material was placed in contact with the protrusion. Be retained.
Since the locking steel that prevents the loaded refractory material from falling off is arranged, the refractory material is prevented from falling off or coming off.
An elongated rod-shaped locking steel is inserted into the insertion hole and hung between both sides, and the insertion holes are formed at multiple locations on the left and right sides of the side grate, so the refractory material is reliable. Is held in.
Since the refractory material is filled with a clay-like material and fired and solidified, it is loaded (filled) according to the internal shape of the side grate. In addition, the refractory material is durable against the high heat of the stoker furnace and absorbs and disperses the heat to protect the side grate.

It is explanatory drawing of the stoker furnace using the side grate of this invention. It is sectional drawing of the side grate loaded with the refractory material. It is a side view of a side grate. It is a top view of a side grate. It is a bottom view of a side grate. It is a front view of a side grate. It is a rear view of a side grate. It is a cross-sectional view of AA in the state which the refractory material is not loaded. It is a cross-sectional view of BB in a state where the refractory material is not loaded. It is a CC sectional view in the state which the refractory material is not loaded. It is a DD sectional view in the state which the refractory material is not loaded. It is sectional drawing of EE in the state which the refractory material is not loaded.

FIG. 1 is a schematic explanatory view of a stoker furnace to which the side grate of the present invention is applied.
This stoker furnace is equipped with a stepped hearth, and the hearth is a fixed grate 1 in which grates are combined in parallel in the left-right direction and a movable grate 1 in which grates are combined in parallel in the left-right direction. The grate 2 and the grate 2 are arranged alternately in the front-rear direction (waste flow direction) in an inclined manner.
The movable grate 2 constituting the stoker reciprocates at a constant pitch in the direction of waste flow by a driving device such as a hydraulic cylinder, transfers the waste on the stoker from the upstream side to the downstream side while stirring, and burns. While supplying air for the combustion chamber from below the hearth by a blower, the tip of each movable grate 2 is slid on each fixed grate 1, and the hearth is arranged in the left-right direction and the front-back direction. It is configured to burn waste on the grate that forms the.

A refractory wall is arranged around the stoker furnace, and side grate 3s are installed on the left and right refractory wall sides of the stoker furnace.
As shown in FIGS. 2 to 12, the side grate 3 of the present invention is integrally cast of heat-resistant steel containing various heat-resistant metals so as to withstand the heat in the combustion chamber of the incinerator, and has a predetermined thickness. It has a top surface 4 and a side surface 5, and the bottom surface 6 has an open shape.
Then, the refractory material 7 is loaded in the upper part of the internal space surrounded by the upper surface 4 and the side surface 5.

The shape of the side grate 3 when viewed from above is rectangular, and the upper surface 4 includes an upstream upper surface 4a extending in the horizontal direction in the front-rear direction and a downstream upper surface 4b bent and inclined downward.
The left and right sides of the side grate are bent at right angles from the top surface and hang down, and the left and right sides are curved inward from top to bottom and are notched, and are provided with mounting portions 8 for the stalker protruding downward. It is provided with a side surface 5a on the upstream side, a central side surface 5b formed parallel to the line on the upper surface, and a side surface 5c on the downstream side inclined downward along the inclined line on the upper surface. The left and right side surfaces 5 are parallel surfaces having a symmetrical shape to each other.
Further, the end surface 11 on the downstream side of the side grate 3 is short and directly below.

The central side surface 5b is formed wider than the downstream side surface 5c, and round steel (locking steel) insertion holes 9 are formed at three locations on the central side surface 5b at intervals in the front-rear direction. ing. The round steel insertion hole 9 is formed in a portion slightly below the upper surface in a direction parallel to the edge line of the upper surface.
Further, inside the side grate 3, protrusions 10 are formed at two places on the upper surface at intervals in the front-rear direction.
The protrusion 10 is a plate-shaped member that is shortly projected from the upper side to the lower side inside the side grate, and the upper side and the left and right sides of the protrusion 10 are connected to the upper surface and the inside of the left and right side surfaces. Is integrally formed with.
The refractory material 7 wraps the entire rear protrusion from the rear portion of the front protrusion, and is loaded (filled) at a position extending to the rear thereof.

The refractory material 7 is arranged in contact with the front and rear protrusions 10, and is stably held by preventing falling off, breakage, etc. by the round steel (locking steel) inserted into the insertion hole 9.
As the material of the refractory material 7, a clay-like material used as a raw material for refractory bricks or the like, which is obtained by kneading various refractory raw materials with a main raw material such as clay, is used.
As a method of loading the refractory material 7, the clay-like material is filled in the side grate, and internally positioned and molded. After molding inside, the round steel is inserted into three insertion holes 9 through the filled clay-like material, and the clay-like material is held by the protrusions 10 and the round steel and fired at a high temperature.
The position, shape, size, etc. of the refractory material 7 are appropriately set according to the shape of the side grate, the position of the protrusions, etc., but in this embodiment, they are arranged in close contact with the central portion of the upper space of the side grate. ing. The refractory material has a length of about one-third of the total length of the side grate and a height of about one-third of the height of the side grate.

Although the embodiment of the present invention has been described above, the specific configuration of the present invention is not limited to the present embodiment, and even if there is a setting change or the like within a range that does not deviate from the gist of the present invention, the present invention includes the present invention. Is done.
For example, the number and setting positions of the insertion holes 9 described in the above embodiment are appropriately set according to the shape, size, and the like of the side grate 3.
Further, regarding the material and mounting method of the refractory material 7, it is possible to adopt a material and mounting method other than those in the above embodiment, and if the refractory material is arranged in the upper part of the internal space of the side grate, this is the case. Included in the device.

1 Fixed grate 2 Movable grate 3 Side grate 4 Top surface 5 Side surface 6 Bottom surface 7 Refractory material 8 Mounting part 9 Insertion hole 10 Protrusion 11 End face

Claims (6)

A side grate characterized by the fact that the fireproof material is placed in close contact with the upper part of the internal space of the side grate. The side grate according to claim 1, wherein a protrusion is formed on the upper part of the internal space of the side grate, and a refractory material is arranged in contact with the protrusion. The refractory material is placed in close contact with the upper part of the internal space of the side grate with left and right sides.
The side grate according to any one of claims 1 to 2, wherein a locking steel is arranged to prevent the loaded refractory material from falling off. The side grate according to claim 3, wherein the locking steel has an elongated rod shape, is inserted into insertion holes on the left and right side surfaces, and is hung between both side surfaces. The side grate according to claim 4, wherein insertion holes are formed at a plurality of positions on the left and right side surfaces of the side grate. The side grate according to any one of claims 1 to 5, wherein the refractory material is filled with a clay-like material and solidified by firing.

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