JP3017441B2 - Grate equipment for refuse incinerators - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grate device in a refuse incinerator.

[0002]

2. Description of the Related Art A combustion grate in a refuse incinerator for incinerating various combustible wastes such as municipal solid waste and industrial waste is composed of a plurality of movable grate rows and fixed grate rows alternately arranged in rows. The movable grate row is reciprocated at a constant pitch by a fluid pressure cylinder mechanism, and the refuse on the movable grate row and the fixed grate row supplied into the incinerator is transferred while being stirred and mixed. It has become.

FIG. 6 is a schematic front view of a conventional grate apparatus. In the drawings, 1 is a movable grate, and 2 is a movable girder integrally formed in a lightning shape over its entire length. The movable grate 1 is pivotally mounted diagonally upward by a pin 4 on a connection fitting 3 attached to a crest of a fixed pitch formed on the movable girder 2 in the direction of refuse to form a movable grate row. ing.

[0004] At the base end of the movable girder 2, the tip of a rod 5 a of a fluid pressure cylinder 5 is axially mounted. Reference numeral 6 denotes a column for supporting the movable girder 2 having a roller 6a attached to the upper end thereof, which contacts the lower surface of the front end portion and the lower surface of the rear end portion of the movable girder 2.

[0005] The fixed grate 7 is mounted on a connecting fitting 9 attached to a horizontal fixed girder 8 at a constant pitch by a pin 10 so as to be obliquely upward in the direction in which the dust is conveyed, thereby forming a fixed grate row. .

The fixed grate 7 is disposed between rows of the movable grate 1 attached at a constant pitch, and the lower surface of the tip of the movable grate 1 is positioned so as to contact the surface of the fixed grate 7. are doing.

The operation of the fluid pressure cylinder 5 causes the movable girder 2 to reciprocate at a constant pitch. As a result, the movable grate 1 attached to the movable girder 2 contacts the surface of the fixed grate 7. Reciprocating diagonally upward. Therefore, the refuse on the movable grate 1 and the fixed grate 7 is transferred while being stirred.

As shown in a partially enlarged front view of FIG. 7, a downward groove 11 is formed at the base end of each movable grate 1 attached to the movable girder 2. A frame 12 which is pivotally mounted by pins 4 to a connection fitting 3 attached to a mountain portion is fitted into the concave groove 11 with a play of a predetermined width.

Therefore, the reciprocating movement of the movable girder 2 by the operation of the fluid pressure cylinder 5 causes the top 1
The movable grate 1 is transmitted to the movable grate 1 via 2 and reciprocates the movable grate 1. At this time, even if the moving pitch of the movable girder 2 is constant, the stroke of the movable grate 1 is changed by the play of the frame 12 of the connection fitting 3 inserted into the concave groove 11 of the movable grate 1. be able to.

[0010]

The above-mentioned conventional grate apparatus has the following problems. That is, the long movable girder 2 has a structure integrally formed in a lightning shape over the entire length thereof. Therefore, when used under severe conditions at extremely high temperatures, thermal deformation is likely to occur. In addition, since the girder pieces divided into a plurality of pieces in the length direction are integrated by welding when manufacturing them, many man-hours are required for securing dimensional accuracy, removing welding distortion, and the like.

Further, since the movable grate 1 is formed with the concave groove 11 into which the frame 12 of the connecting fitting 3 is inserted for adjusting the stroke of the reciprocating movement, there is a problem in terms of strength. .

Accordingly, an object of the present invention is to solve the above-mentioned problems, to prevent a long movable girder from being thermally deformed, and to provide a movable grate with sufficient strength, thereby providing a severe girder. It is an object of the present invention to provide a grate device for a refuse incinerator, which does not cause a failure even under various use conditions and has excellent durability.

[0013]

According to the present invention, there is provided a movable grate array comprising a grate fixedly mounted on a movable girder at a fixed interval and a grate fixedly mounted on a fixed girder at a fixed interval. The fixed grate row is arranged on the surface of the fixed grate such that the lower surface of the tip of the movable grate comes into contact with the grate device of the refuse incinerator,
The movable girder includes a plurality of girder pieces divided in a length direction thereof, and connection pieces fixed to opposing ends of the plurality of girder pieces for connecting the girder pieces to each other. The connecting piece at one end of the girder is formed with a horizontally long groove or a long hole, and the connecting piece at the other end of the girder is connected to the connecting piece at one end of the girder. The present invention is characterized in that a pin is fitted in the hole with a predetermined play.

[0014]

Next, the present invention will be described with reference to the drawings. FIG. 1 is a schematic front view showing a first embodiment of the grate apparatus of the present invention. As shown in the drawing, the entire grate device is composed of a movable grate row composed of a movable grate 1 fixedly mounted on a movable girder 2 at fixed intervals and a fixed girder 8 as shown in FIG. A fixed grate row composed of fixed grate 7 axially attached with a gap is positioned and arranged such that the lower surface of the tip portion of movable grate 1 contacts the surface of fixed grate 7.

In the apparatus of the present invention, the movable girder 2
Is divided into a plurality of girder pieces 13 in its length direction. In the illustrated example, the movable girder 2 includes a first girder piece 13.
a, the second girder piece 13b, and the third girder piece 13c. The three girder pieces are formed in a lightning shape as a whole. In addition, the movable girder 2 may be divided into any number of girder pieces.

A first connecting piece 14 facing the second girder piece 13b is attached to the tip of the first girder piece 13a.
A second connection piece 15 facing the first connection piece 14 is attached to the rear end of the girder piece 13b. Similarly, the tip of the second girder piece 13b has the first girder piece 13b facing the third girder piece 13c.
The connection piece 14 is attached, and a second connection piece 15 facing the first connection piece 14 is attached to the rear end of the third girder piece 13c.

As shown in a partially enlarged view in FIG. 2, a top 16 having a horizontally long groove is attached to a lower portion of the first connecting piece 14, and a convex type is provided to an upper portion of the second connecting piece 15. A top 17 is attached. The convex frame 17 attached to the second connection piece 15 is fitted with a predetermined gap 18 in a frame 16 having a horizontally long groove attached to the first connection piece 14.

The girder pieces 13a, 13b,
13c, the base end of the movable grate 1 is pivotally mounted diagonally upward by a pin 4 in the direction in which the refuse is transported, thereby forming a movable grate row. .

The distal end of the rod 5a of the fluid pressure cylinder 5 is mounted on the base end of the first girder piece 13a. Girders
Below each of the girder pieces 13a, 13b, and 13c, there are provided columns 6, 6 having a roller 6a mounted on the upper end thereof for contacting and supporting the lower and lower surfaces of the leading and trailing ends of each girder piece. .

The fixed grate 7 is disposed between the rows of the movable grate 1 and is connected to a connecting fitting 9 attached to a horizontal fixed girder 8 at a constant pitch by a pin 10 so as to be inclined obliquely upward in the direction of dust transfer. Is being worn. The lower surface of the tip of the movable grate 1 is positioned so as to contact the surface of the fixed grate 7.

The operation of the fluid pressure cylinder 5 causes the movable girder 2 to reciprocate at a constant pitch. As a result, the movable grate 1 attached to the movable girder 2 contacts the surface of the fixed grate 7. Reciprocating diagonally upward. Therefore, the refuse on the movable grate 1 and the fixed grate 7 is transferred while being stirred.

As described above, the girder pieces 13a, 13b, and 13c that constitute the movable girder 2 have the top 16 having a horizontally elongated groove on the lower surface of the distal end of the first connecting piece 14 attached to each distal end thereof. The top 1 attached to the upper part of the second connection piece 15
7 are inserted with a predetermined gap 18 therebetween, whereby the girder pieces are connected to each other.

Therefore, in the reciprocating motion of the first girder piece 13a by the operation of the fluid pressure cylinder 5, the play in the gap 18 is completed by the frame 16 having the horizontally long groove on the lower surface of the tip of the first connection piece 14. Thereafter, the light is transmitted to the second girder piece 13b via the convex frame 17 attached to the upper part of the second connection piece 15, and similarly transmitted to the third girder piece 13c.

Therefore, even if the pitch of the reciprocation by the fluid pressure cylinder 5 is constant, the amount of play in the gap 18 can be changed by the size of the convex frame 17 mounted on the upper part of the second connection piece 15. Thereby, the stroke of the movable girder 2, that is, the stroke of the reciprocating motion of the movable grate 1 can be changed. Therefore, if several types of tops having different sizes are prepared, the stroke of the reciprocating movement of the movable grate 1 can be easily changed.

The groove of the top 16 having a horizontally elongated groove provided on the lower surface of the distal end portion of the first connection piece 14 has two opposing surfaces closed and the other two opposing surfaces open. It may be a concave groove or a hole-like groove whose four surfaces are closed.

FIG. 3 is a schematic front view showing a second embodiment of the grate apparatus of the present invention, FIG. 4 is a partially enlarged view thereof, and FIG. 5 is a plan view of FIG. In the device according to the second embodiment of the present invention, the end of the first connecting piece 14 'is formed in a forked shape having a predetermined gap 19, and the end of the second connecting piece 15' is formed in the first connecting piece 14 '. ′ Is inserted into the gap 19 at the end of the first connecting piece 14 ′, and the end of the first connecting piece 14 ′ is provided with a horizontally elongated hole 20, in which the end of the second connecting piece 15 ′ is inserted. The difference from the device of the first embodiment is that a frame 21 attached to a portion by a shaft 22 is fitted with a predetermined play.

According to the device of the second embodiment, the reciprocation of the first girder piece 13a by the operation of the hydraulic cylinder 5 is connected by the top 21 inserted into the long hole 20 of the first connection piece 14. The second girder piece 13b is transmitted to the second girder piece 13b via the second connection piece 15 ', and similarly transmitted to the third girder piece 13c.

According to the present invention, the long movable girder 2
Is divided into a plurality of girder pieces 13a, 13b, 13c in its length direction, so that even under extremely high temperature and severe conditions, there is little thermal deformation, its production is easy and the production cost is reduced, Manufacturing accuracy is also improved. Further, since the movable grate 1 is not provided with a concave groove into which a frame for adjusting the reciprocating movement stroke is formed as in the prior art, there is no problem in strength.

[0029]

As described above, according to the present invention,
There is no thermal deformation of the long movable girder,
Also, the movable grate can be given sufficient strength,
An industrially useful effect is obtained in which a grate device having excellent durability can be obtained without failure even under severe use conditions.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing a first embodiment of a grate device of the present invention.

FIG. 2 is a partially enlarged view showing a connecting piece of the device of the first embodiment.

FIG. 3 is a schematic front view showing a first embodiment of the grate device of the present invention.

FIG. 4 is a partially enlarged view showing a connecting piece of the device according to the second embodiment.

FIG. 5 is a schematic plan view of FIG.

FIG. 6 is a schematic front view of a conventional grate device.

FIG. 7 is a partially enlarged front view of a conventional grate device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Movable grate 2 Movable girder 3 Connection metal fitting 4 Pin 5 Fluid pressure cylinder 6 Prop 7 Fixed grate 8 Fixed girder 9 Connection metal fitting 10 Pin 11 Groove 12 Frame 13 Girder piece 14 First connection piece 15 Second connection piece 16 Horizontally long Top with groove 17 Convex top 18 Gap 19 Gap 20 Slot 21 Top 22 Shaft

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F23H 7/08

Claims (1)

(57) [Claims] 1. A movable grate row comprising a grate axially fixed to a movable girder at a fixed interval, and a fixed grate row comprising a grate axially fixed to a fixed girder at a fixed distance, In a grate device for a refuse incinerator, the movable girder is divided in its length direction, wherein the girder device is disposed so that the lower surface of the tip of the movable grate contacts the surface of the fixed grate. A plurality of girder pieces, and a connection piece fixed to the opposite end of each of the plurality of girder pieces for connecting the girder pieces to each other, The connection piece is formed with a horizontally long groove or a long hole, and the connection piece at the other end of the girder opposite to the connection piece is provided with a predetermined play in the horizontally long groove or the long hole and fitted. Waste incinerator, characterized by being fitted with Grate apparatus.