JPH0645137Y2 - Stoker in incinerator - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a stoker applied to an incinerator such as a refuse incinerator.

[Conventional technology]

The waste collected by the garbage truck is burned in the refuse incinerator and discharged as incineration ash. The stoker plays an important role in transferring the refuse in the incinerator. That is, the refuse thrown into the incinerator is combusted while moving sequentially to the dry stoker, the combustion stoker, and then the post-combustion stoker due to the mechanical reciprocating motion of the stoker, and becomes incinerated ash outside the furnace. Is discharged.

Generally, a stoker forms a grate row by arranging a plurality of grate and attaching the rear end of the grate to a grate receiving beam, and arranging the grate row in a staircase in an incinerator. The movable grate array and the fixed grate array are alternately formed, and the incineration object is transferred by repeatedly reciprocating the movable grate array back and forth.

In forming these grate rows, conventionally, the positioning of adjacent grate has not been particularly considered. Therefore, there is a problem that one of the grate slides down from the grate row.

For this reason, consideration has been given to the positioning of the grate. For example, a hook metal fitting is attached to the grate body to connect the grate or bolts
It was just a nut.

However, regardless of whether the hook metal fittings or bolts and nuts are used, a large number of metal fittings or bolts and nuts will be used, so it will be very troublesome to replace and install the grate. In addition to hanging, there were various problems such as seizure of hook metal fittings or bolts / nuts.

So, as a solution to these problems, for example,
A stoker in an incinerator as described in Japanese Utility Model Publication No. 2-5228, which is an application relating to the present applicant, has been devised.

That is, the stoker in this incinerator is shown in Figs.
As shown in the drawing, a concave portion 55 cut out from the upper surface to the lower surface of the grate is provided on one side surface near the rear end of the grate 51H, and a convex portion 54 is provided on the other side surface thereof, and the grate is adjacent to each other. Arranged so that the concave portion 55 and the convex portion 54 of 51H are aligned,
These plural grate 51H are connected to the grate 5 located at both ends.
The movable grate row 51 and the fixed grate row 52 are configured by pressing and fixing with a bolt 57 provided on the grate receiving beam 53 so that it can be tightened or loosened from the side surface of the rear end of 1H. The movable grate row and the fixed grate row are alternately arranged in a multi-step manner in the transfer direction of the incineration object.

Then, when assembling the movable grate row 51 or the fixed grate row 52, the rear end of each grate 51H, 52H, the angle steel 58,
While being inserted into the grate receiving beam 53 composed of the channel steel 59 and the end plate 60, the concave portion 55 and the convex portion 54 are respectively adjacent to the grate 51H, 5
In a state where the convex portion 54 and the concave portion 55 are aligned with 2H, the end plate 60 is fastened with bolts 57 screwed together and abutted against the side surfaces of the grate 51H and 52H to be fixed to the grate receiving beam 53.

When replacing the grate 51H, 52H, loosen the bolt 57 and move it away from the side surface of the grate 51H, 52H, leaving a sufficient space between both sides of the grate 51H, 52H to be replaced. After that, the grate 51H, 52H is taken out by pulling it forward.

[Problems to be solved by the device]

However, in the conventional stoker, the rear end of the grate row is fastened with bolts, but the vicinity of the front end is not restricted at all. That is, the front end of each grate is not laterally restricted in position. Therefore, while the movable grate row repeatedly reciprocates back and forth, the front end portion of the grate may receive a force and a gap may be formed between the adjacent grate.

Also, in order to prevent damage to the grate during operation of the incinerator, the bolts are loosened slightly by the amount of thermal expansion of the grate, so when the grate is not yet sufficiently expanded, A slight gap may be created due to misalignment and deviation.

Then, in the gap between the grate and the grate generated as described above, foreign matter such as incineration material enters and the grate row spreads in a fan shape, which may cause malfunction and the gap may expand. The number of fallen objects under the stalker increases,
In some cases, the problem of breakage of the grate occurs.

Then, the purpose of this invention is to solve the above-mentioned problems, and by regulating the front end portions of the individual grate to each other in the lateral direction, the gap between the grate rows becomes large, and the incinerator, etc. It is an object of the present invention to provide a stoker in an incinerator that prevents foreign matter, that is, foreign matter from entering and causing malfunction of the stoker, and preventing the incinerated material from dropping below the stoker from the gap of the grate.

[Means for Solving the Problems]

The present invention is configured as follows in order to achieve the above object. That is, according to the invention, a plurality of grate is arranged on a grate receiving beam in a width direction to form a grate array, and the grate array can be reciprocally moved and a fixed grate in a fixed state. In an incinerator configured in rows, in which the movable grate rows and the fixed grate rows are alternately arranged in a stepwise manner, a position regulating member for holding adjacent grate of the grate row to each other, The present invention relates to a stoker in an incinerator provided in a grate mounting frame arranged in front of the grate receiving beam for supporting the grate.

[Action]

Since the stoker in the incinerator according to the present invention is configured as described above, it operates as follows.

That is, by inserting the front end portions of the adjacent side surfaces of the arranged grate into the position regulating member fixed in front of the grate receiving beam, the positions of the adjacent grate are prevented from being laterally displaced. Even if a force is applied to the front end portion of the grate, the gap between the adjacent grate does not expand, and foreign matter does not enter the gap because it is regulated. , The front end of the grate is surely prevented from spreading like a fan.

〔Example〕

Embodiments of a stoker in an incinerator according to the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view showing an embodiment of a stoker in an incinerator according to the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is an exploded view of the stoker of FIG. Is.

The stoker in the incinerator according to this invention is mainly
A plurality of grate 1, a grate receiving beam 44 that supports the grate 1 to form a grate row by arranging the grate 1 in the width direction,
It has a grate mounting frame 2 arranged in front of the grate receiving beam 44 and supporting the grate 1, and a position regulating member 3 supporting mutually adjacent grate forming a grate row in the width direction. There is. These position regulating members 3 are provided on the grate mounting frame 2 arranged in front of the grate receiving beam 44 for supporting the grate 1. The grate array is composed of a movable grate array capable of reciprocating the grate itself back and forth and a fixed grate array in a fixed state, and the movable grate array and the fixed grate array are alternately arranged in a staircase pattern. By repeatedly reciprocating the movable grate row back and forth, the incineration object on the grate row can be dropped and transferred.

Next, the stoker in the incinerator according to the present invention will be specifically described.

The grate 1 has a pair of parallel side surface portions 11 and 12 each having an L-shaped side surface and protruding downward. At the rear end portion of the grate 1, a groove portion 13 cut in a direction orthogonal to the pair of side surface portions 11 and 12 is formed.

The grate mounting frame 2 is composed of a pair of horizontal frame members 21 and 22 arranged in parallel in the front-rear direction and a connecting member 23 integrally fixing the horizontal frame members 21 and 22.

The position restricting member 2 is composed of a pair of metal fittings 31 and 32 having a U-shaped cross section, an open quadrangle in cross section, a cross section, and the like arranged in the front and rear. The metal fittings 31, 32 having a U-shaped cross section, an open quadrangular shape in cross section, a cross sectional shape, etc., respectively have grooves 33, 34 of the same U shape in cross section, open quadrangular shape in cross section, cross section, etc. The horizontal frame members 21 and 22 are fixed by welding or the like. A straight line connecting the centers of the grooves 33, 34 having a U-shaped cross section, an open quadrangle in cross section, a cross section, etc. is arranged so as to be orthogonal to the horizontal frame members 21, 22.

The grate support fitting 4 is made of, for example, an H-shaped steel member having an upper portion 41, a web portion 43, and a lower portion 42 each having an H-shaped cross section, and a bracket behind the grate mounting frame 2
It is attached through 45. Grate support bracket 4
A grate receiving beam 44 is fixed to the upper portion 41 of the by welding or the like, and is arranged in parallel with the horizontal frame members 21 and 22.

The grate row is formed by arranging a plurality of grate 1 laterally on the grate mounting frame 2 and the grate support fitting 4. That is, as shown in FIG. 1, the grate 1 has a rear end portion formed by fitting the groove portion 13 formed at the rear end portion of the grate 1 into the grate receiving beam 44 of the grate support fitting 4. Supported. In addition, as shown in FIG. 2, the grate 1 has a front end portion between adjacent side surface portions 11 and 12 of the arranged grate 1 with a U-shaped cross section of the position regulating member 3, an open square shape in cross section, and a cross sectional shape. By fitting in the grooves 33, 34, etc., the front end of each grate 1 is positionally restricted in the width direction, that is, in the lateral direction.

The grate array thus formed is arranged stepwise in the incinerator to alternately form a movable grate array and a fixed grate array.

Further, the position regulating member 3 may be provided at one place, but as shown in FIG. 1, it is more effective to attach it at a plurality of places such as two places in front of and behind the grate receiving beam 44. Further, as shown in FIG. 2, it is desirable that the position regulating members 3 be attached by the number of adjacent side surface portions 11 and 12 of the aligned grate 1, but it is also possible to attach them at several places at intervals. Good. Further, the metal fittings 31 and 32 having a U-shaped cross section, an open quadrangular cross section, a cross sectional shape or the like as the position restricting member 3 are metal fittings 31 having a dimensional error of each grate 1 or a U shape cross section, an open quadrangular cross section, a cross sectional shape or the like. , 3
In consideration of manufacturing errors when fixing 2 to the grate mounting frame 2, grooves 33, 3 with a U-shaped cross section, open square shape in cross section, cross section, etc.
The width of 4 may be adjusted.

[Effect of device]

Since the stoker in the incinerator according to the present invention is configured as described above, it has the following effects. That is, since the stoker in this incinerator is configured to position-regulate the adjacent grate in the grate row in the width direction by the position-regulating member, a gap is formed between the grate and the incinerated material is present in the gap. It is no longer possible for foreign matter such as foreign matter to bite into a wedge. Therefore, it is possible to reliably prevent a situation in which the grate becomes fan-shaped and its overall width increases, resulting in malfunction, or an accident such as breakage of the grate.

In addition, since the adjacent parts of the grate do not spread, it is possible to prevent the number of falling objects from increasing below the grate. Further, since the grate row can be assembled by simply inserting the grate side surface part into the position regulating member and supporting the grate on the grate receiving beam, the work of exchanging the grate can be performed extremely easily. .

[Brief description of drawings]

1 is a side sectional view showing an embodiment of a stoker in an incinerator according to the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is an exploded view of the stoker of FIG. FIG. 4 is a plan view of a conventional stoker, and FIG. 5 is an explanatory view showing a usage state of the conventional stoker. 1 ... Grate, 2 ... Grate mounting frame, 3 ... Position control member, 4 ... Grate support metal fitting, 11,12 ... Side part, 13 ...
Groove, 44 …… Grate receiving beam, 31,32 …… Metal fittings, 33,34 ……
groove.

Claims (1)

[Scope of utility model registration request] 1. A plurality of grate is arranged in a width direction on a grate receiving beam to form a grate array, and a movable grate array capable of reciprocating the grate array and a fixed grate array in a fixed state. In the incinerator in which the movable grate rows and the fixed grate rows are alternately arranged in a stepwise manner, the position regulating member for holding the adjacent grate of the grate row to each other, A stoker in an incinerator provided on a grate mounting frame arranged in front of the grate receiving beam for supporting the grate.