JPH0772609B2 - Incinerator combustion device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion device for an incinerator which is arranged to burn dust in a refuse incinerator or the like.

[0002]

2. Description of the Related Art Generally, combustible waste discharged from homes is collected and incinerated in a waste incinerator for disposal.

The garbage incinerator is equipped with a dry stoker for transferring the garbage while stirring and unraveling it, a burning stoker for transferring the garbage while burning it, and the burning stoker is, for example, Japanese Patent Publication No. 63- A combustion device as disclosed in Japanese Patent No. 57688 is arranged.

FIG. 17 shows a combustion device disclosed in this publication. In this combustion device, a fixed grate is provided adjacent to the upper part of the device main body 1 alternately along the front-rear direction in an oblique state. A bar 2 and a movable great bar 3 are arranged.

The rear end of the fixed great bar 2 is
The movable great bar 3 is swingably supported by a fixed great bar support shaft 4, and the rear end of the movable great bar 3 has a movable great bar support shaft 5.
It is swingably supported by.

One end of a first arm 7 is connected to the movable grate bar support shaft 5 via a joint member 6, and the other end of the first arm 7 is fixed to a rotary shaft 8. Rotation axis 8
Is connected to one end of the turning lever 9, and the other end of the turning lever 9 is connected to one end of the second arm 10.

The other end of the second arm 10 is connected to the piston rod 12 of the hydraulic cylinder 11. And
The rotation shaft 8 is configured to move up and down by the slide guide attachment means 13.

In the above-described combustion apparatus, since the rotary shaft 8 is moved up and down by the slide guide attachment means 13, the movable great bar 3 is linearly moved substantially parallel to the inclination direction of the fixed great bar 2. It is possible to improve the combustion efficiency and the like.

[0009]

However, in the conventional combustion apparatus, since the movable great bar 3 is linearly moved substantially parallel to the inclination direction of the fixed great bar 2,
Since it is necessary to move the rotary shaft 8 up and down by the slide guide attachment means 13, there is a problem that the drive mechanism of the movable great bar 3 becomes very complicated.

The present invention has been made to solve the above-mentioned problems, and moves a movable great bar between fixed grate bars with a very simple structure without moving the fixed grate bar up and down. An object of the present invention is to provide a combustion device for an incinerator that can be used.

[0011]

A combustion device for an incinerator according to the present invention comprises a fixed grate bar and a movable grate bar, which are alternately arranged adjacent to each other in the front-rear direction in the upper part of the device body in an oblique state. And a fixed great bar support shaft that swingably supports the rear end portion of the fixed great bar,
A fixed grate bar joint member connected to the fixed grate bar support shaft and fixed to the apparatus main body, a movable grate bar support shaft that swingably supports the rear end of the movable grate bar, and the movable grate bar support. A movable grate bar joint member connected to a shaft, and one end of which is connected to the movable grate bar joint member, and the other end of which is fixed to a rotating shaft rotatably supported by the apparatus body. Blade and a second arm whose one end is connected to the rotating shaft and whose other end is connected to a reciprocating drive mechanism supported by the apparatus body, the cutting edge below the front end of the movable grate bar. When the slider slides on the upper surface of the fixed great bar as a flat surface, the blade tip on the lower side of the front end of the movable great bar moves up and down with respect to a predetermined straight line along the upper surface of the fixed great bar. The first displacement amount, which is opposite to the displacement amount, is plotted on the upper surface of the movable great bar to form the first curved surface portion, and the second displacement amount, which is opposite to the reference displacement amount, is applied to the upper surface of the fixed great bar. Second to plot
The first displacement amount of the first curved surface portion and the second displacement amount of the second curved surface portion are formed as a curved surface portion, and the sum of the first displacement amount and the second displacement amount at a predetermined position is equal to the reference displacement amount. It is configured so that

[0012]

In the incinerator combustion apparatus of the present invention, when the reciprocating drive mechanism reciprocates, the first arm oscillates via the second arm and the rotation shaft, and the front end side of the movable great bar makes an arc motion. Then, the cutting edge on the lower side of the tip slides on the second curved surface portion of the fixed great bar in front of the movable great bar and moves.

At this time, the second displacement amount of the second curved surface portion is added to the locus of the movable great bar, and the movable great bar is placed on the first curved surface portion to which the second displacement amount is added. The blade edge of the fixed great bar is in a state in which the first displacement amount of the first curved surface portion and the second displacement amount of the second curved surface portion are added to the movement of the movable great bar.

As a result, the movable great bar is moved by the first arm, and the arc movement of the first arm causes
Although the front end side of the movable great bar moves up and down,
The blade edge of the fixed great bar placed on the first curved surface portion of the movable great bar rarely moves up and down with respect to the direction perpendicular to the moving direction of the movable great bar.

[0015]

An embodiment of the present invention will be described in detail below with reference to the drawings. 1 and 2 show a combustion device for an incinerator according to an embodiment of the present invention. In these drawings, reference numeral 20 denotes a device body.

As shown in FIG. 1, the main body 20 of the apparatus is
It has vertical columns 20a which are arranged at a predetermined interval along a conveying path S such as dust to be incinerated. As shown in FIG. 2, these vertical columns 20a are arranged at intervals on both sides of the transport path.

The vertical support column 20a is supported on the lower horizontal support column 20b, and in the middle part thereof, the middle horizontal support column 2a.
They are connected by 0c. A side wall portion 20d is arranged at the upper end of the vertical column 20a, and a horizontal mount 20e is arranged below the side wall portion 20d.

Inside the side wall portion 20d, the side wall 20
f is arranged. A movable great bar 21 and a fixed great bar 22 are arranged on the upper portion of the apparatus main body 20 so as to be alternately adjacent to each other along the front-rear direction in an oblique state.

The rear end of the fixed grate bar 22 is swingably supported by a fixed grate bar support shaft 31, as shown in FIGS. Fixed Great Bar Support Shaft 31
Is placed on the joint member 33,
Is fixed to the horizontal mount 20e.

On the other hand, the rear end of the movable great bar 21 is
The movable great bar support shaft 37 is swingably supported. The movable grate bar support shaft 37 is fixed to the joint member 39, and the joint member 39 is fixed to one end of the first arm 41.

The other end of the first arm 41 is fixed to the rotating shaft 43. Both ends of the rotating shaft 43 are rotatably supported by bearing members 45, and the bearing members 45 are arranged horizontally in the center of the apparatus main body 20 and are located at the middle horizontal support column 20.
It is fixed on c.

A second arm 49 is provided at the end of the rotary shaft 43.
Alternatively, one end of the third arm 51 is fixed, and the second arm 49 having a long length and the third arm 5 having a short length are used.
1 is connected by a connecting arm 53.

A piston rod 57 of a hydraulic cylinder 55, which constitutes a reciprocating drive mechanism, is connected to the other end of the second arm 49. One end of the hydraulic cylinder 55 is
The supporting member 59 is swingably connected to the supporting member 59.
9 is fixed on a horizontal column 20g horizontally arranged between lower horizontal columns 20b at the bottom of the apparatus body 20.

In this embodiment, as shown in FIG. 3, a large number of movable great bars 21 are divided into two groups A and B, and the movable great bars 21 of each group A and B are staggered. It is arranged.

The movable great bar 2 of group A
When 1 is retracted, the movable great bars 21 of the other groups B, which are alternately arranged with the movable great bars 21 of the group A along the front-rear direction, are moving forward.

This is done by operating the second arm 49 related to group A and the second arm 49 related to group B in opposite phases by the respective hydraulic cylinders 55.

In this embodiment, as shown in FIG. 1, an inlet chute 63 for supplying dust is arranged on the inlet side of the apparatus main body 20, and an exhaust chute for discharging incinerated ash on the outlet side. 65 are arranged.

An air suction hopper 67 is provided below the fixed great bar 22 and the movable great bar 21, and combustion air is supplied to the air sucking hopper 67, and a gap is provided between the fixed great bar 22 and the movable great bar 21. , Is blown up as the air for burning dust above it.

The air suction hopper 67 also serves as a chute for receiving ash and dust falling from the gap between the fixed great bar 22 and the movable great bar 21 and discharging them to the lower part.

Further, on the upper part of the air suction hopper 67,
A seal plate 71 is arranged. An air cooling pipe 73 for supplying cooled air is arranged on the side wall portion 20d,
A furnace wall 75 is formed above the side wall portion 20d.

5 to 9 show a movable great bar 21.
The details of the fixed great bar 22 are shown in the longitudinal direction (reference line) on the upper surface of the movable great bar 21.
A first curved surface portion 23 that is displaced in a direction perpendicular to is formed.

On the upper surface of the fixed great bar 22,
A second curved surface portion 24 is formed which is displaced in a direction perpendicular to the longitudinal direction (reference line). Further, a concave portion 21C is formed in the cutting edge 21B below the tip of the movable grate bar 21, and a cutting edge 22B below the tip of the fixed grate bar 22 is formed.
A recessed portion 22C is formed in the.

As a result, the dust is less likely to be compressed by the cutting edges 21B and 22B, and even if the dust is drawn into the recesses 21C and 22C, it easily falls down.
The first displacement amount 23A displaced with respect to the reference line in the first curved surface portion 23 and the second displacement amount 24A with respect to the reference line in the second curved surface portion 24 are obtained as follows based on FIG.

FIG. 10 shows the movable great bar 2 shown in FIG.
1 shows a state in which a curved surface portion 25A is formed on the upper surface of the movable grate bar 25 having a shape different from that of No. 1 and the upper surface of the fixed grate bar 26 is a flat surface.

The curved surface portion 25A of the movable great bar 25 is
Due to the arc movement of the movable great bar support shaft engaged with the groove 25B formed on the front end side, the blade tip 25C at the lower end of the movable great bar 25 is moved to the movable great bar 2
5, the fixed upper surface part 2 of the fixed grate bar 26 in a plane state
When sliding 6A, the curved surface portion 2 of the movable great bar 25
The blade edge 26C of the rear fixed grate bar 26 placed on the 5A is required not to move up and down with respect to the direction perpendicular to the moving direction of the movable grate bar 25.

Specifically, a reference displacement that moves up and down with respect to a predetermined straight line L (corresponding to the reference line in FIGS. 6 and 8) along the upper surface portion 26A of the fixed great bar 26 in front of the movable great bar 25. The quantity 26D is determined along the axial direction.

Then, the reference displacement amount 26D of the movable great bar 25 at the predetermined position is determined by the movable great bar 21.
The first displacement amount 23A of the movable great bar 21 shown in FIG. 5 is broken down into the first displacement amount 23A of FIG.
A and the second displacement amount 24A of the fixed great bar 22
It corresponds to.

That is, the first displacement amount 23A having a direction opposite to the reference displacement amount 26D is plotted on the upper surface of the movable grate bar 21 to obtain the first curved surface portion 23, and at the same time, the reference displacement amount 26D and the direction are determined. The opposite second displacement amount 24A,
The second curved surface portion 24 is obtained by plotting on the upper surface of the fixed grate bar 22, and in this embodiment, the value of the first displacement amount 23A and the value of the second displacement amount 24A are equal.

11 to 16 show the state in which the movable grate bar 21 moves forward and changes. 11 and 12 show a state in which the stroke of the piston rod 57 of the hydraulic cylinder 55 is zero, and in this state, the cutting edge 21B of the movable great bar 21 of the second curved surface portion 24 of the fixed great bar 22 is It is located at the rear end.

13 and 14 show the piston rod 5
7 shows a state in which the stroke 7 is in the middle of the entire stroke, and in this state, the blade edge 21B of the movable great bar 21 is positioned in the middle of the second curved surface portion 24 of the fixed great bar 22.

15 and 16 show the piston rod 5
The stroke 7 indicates the full stroke state, and in this state, the cutting edge 21B of the movable great bar 21 is located at the front end of the second curved surface portion 24 of the fixed great bar 22.

That is, when the piston rod 57 of the hydraulic cylinder 55 reciprocates, the second arm 49 and the rotary shaft 4 are moved.
3 or via the second arm 49, the connecting arm 53, the third arm 51, and the rotating shaft 43, the first arm 41 swings, and the front end side of the movable great bar 21 makes an arc motion. Then, the blade edge 21B at the lower end of the tip slides on the second curved surface portion 24 of the fixed great bar 22 in front of the movable great bar 21 and moves diagonally.

The cutting edge 21 of the movable great bar 21
Since B is mounted on the second curved surface portion 24 of the fixed great bar 22, the movable great bar 21 moves so as to draw an intermediate locus between an arc and a straight line, and at that time, the movable great bar 21 moves to the second position of the fixed great bar 22. The second displacement amount 24A of the curved surface portion 24 is added to the trajectory of the movable great bar 21.

Further, the cutting edge 22B of the fixed great bar 22 placed on the first curved surface portion 23 of the movable great bar 21 to which the second displacement amount 24A is added is relative to the movement of the movable great bar 21. As a result, the first displacement amount 23A of the first curved surface portion 23 and the second displacement amount 24A of the second curved surface portion 24 are added.

As a result, the lower end side of the movable great bar 21 makes an arc motion, but the cutting edge 2 of the fixed great bar 22 placed on the first curved surface portion 23 of the movable great bar 21.
2B indicates the displacement of the first curved surface portion 23 of the movable grate bar 21 passing through the first displacement amount 23A and the second displacement amount 24.
It is received as the sum of A, and it rarely moves up and down with respect to the direction perpendicular to the moving direction of the movable great bar 21, and the movable great bar 21 moves as if it slips between the upper and lower fixed great bars 22.

In the incinerator combustion device described above, the first curved surface portion 23 is formed on the movable grate bar 21,
Since the second curved surface portion 24 is formed on the fixed great bar 22, by moving the movable great bar 21 along the inclination direction of the fixed great bar 22 even though the first arm 41 makes an arc motion. It is possible to move the upper fixed grate bar 22 without moving up and down, and as a result, it is not necessary to vertically move the rotating shaft by the slide guide attachment means unlike the conventional case.
It is possible to make the drive mechanism of the movable grate bar 21 very simple.

Further, when the movable great bar 21 moves, even if the movable great bar 21 makes an arc motion, the movable great bar 21 can pass between the fixed great bars 22 on both sides of the movable great bar 21. The blade edge 22B of the fixed great bar 22 placed on the first curved surface portion 23 of the great bar 21 rarely moves up and down with respect to the direction perpendicular to the moving direction of the movable great bar 21, so No gap is created between the movable great bar 21 and dust, and the dust falls downward from this gap.
It is possible to prevent combustion air from below from coming out upward through this gap. Therefore, air can be blown evenly between the dust layers, and uniform treatment can be performed when dust is burned.

When the movable great bar 21 is moved,
The cutting edge 22B of the fixed grate bar 22 placed on the first curved surface part 23 of the movable grate bar 21 is prevented from biting, the falling dust is surely slipped off, and the flow pattern of the reversal action during the dust conveyance is improved. It has the effect of being held.

In this embodiment, the first displacement amount 2
The sum of 3A and the second displacement amount 24A is set to be equal to the reference displacement amount 26D and is equal to the values of the first displacement amount 23A and the second displacement amount 24A. It is sufficient that the sum of the first displacement amount 23A and the second displacement amount 24A is set to be equal to the reference displacement amount 26D, and the values of the first displacement amount 23A and the second displacement amount 24A do not necessarily have to be equal.

Further, in the above-mentioned embodiment, an example in which the device is driven by the hydraulic cylinder 55 has been described, but the present invention is not limited to this embodiment, and for example, a reciprocating drive mechanism using a rack or the like. Needless to say, the device may be driven by.

[0051]

As described above, according to the present invention,
Since the first curved surface portion is formed on the movable great bar and the second curved surface portion is formed on the fixed great bar, the movable great bar is moved between the fixed great bars even though the first arm makes an arc motion. Since the fixed great bar can be moved without moving up and down, there is an advantage that the drive mechanism of the movable great bar can be made very simple.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a combustion apparatus for an incinerator according to the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is an enlarged view showing a main part of FIG. 1 in an enlarged manner.

FIG. 4 is a perspective view showing a main part of FIG.

FIG. 5 is a side view showing the shapes of a fixed great bar and a movable great bar.

FIG. 6 is a side view of a movable great bar.

FIG. 7 is a plan view of a movable great bar.

FIG. 8 is a side view of a fixed great bar.

FIG. 9 is a plan view of a fixed great bar.

FIG. 10 is an explanatory diagram for calculating a first displacement amount of a movable great bar and a second displacement amount of a fixed great bar.

FIG. 11 is a side view showing a moving state of the movable grate bar when the stroke of the piston rod is zero.

FIG. 12 is a front view of FIG. 11.

FIG. 13 is a side view showing a moving state of the movable grate bar when the stroke of the piston rod is a half stroke.

FIG. 14 is a front view of FIG.

FIG. 15 is a side view showing a moving state of the movable great bar when the stroke of the piston rod is the full stroke.

16 is a front view of FIG.

FIG. 17 is an explanatory view showing a combustion device of a conventional incinerator.

[Explanation of symbols]

 20 Device Main Body 21 Movable Great Bar 21B Blade Edge 22 Fixed Great Bar 22B Blade Edge 23 First Curved Surface 23A First Displacement 24 Second Curved Surface 24A Second Displacement 26D Reference Displacement 31 Fixed Great Bar Support Shaft 33 Joint Member (Fixed) Great bar) 37 Movable great bar support shaft 39 Joint member (for movable great bar) 41 First arm 43 Rotating shaft 49 Second arm 55 Hydraulic cylinder

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Haruo Miyata 1-4-1 Yurakucho, Chiyoda-ku, Tokyo Sanki Industry Co., Ltd. (56) References Japanese Patent Publication No. 63-57688 (JP, B2)

Claims (1)

[Claims] 1. A fixed grate bar and a movable grate bar, which are alternately arranged adjacent to each other in the front-rear direction in an oblique state on the upper part of the apparatus main body, and a rear end portion of the fixed grate bar is swingable. A fixed grate bar support shaft that is supported by the fixed grate bar, a fixed grate bar coupling member that is connected to the fixed grate bar support shaft and is fixed to the apparatus main body, and a movable grate that swingably supports the rear end of the movable grate bar. A bar support shaft, a movable great bar joint member connected to the movable great bar support shaft, one end connected to the movable great bar joint member, and the other end rotatably supported by the apparatus body. A first arm fixed to the rotating shaft, and a second arm having one end connected to the rotating shaft and the other end connected to a reciprocating drive mechanism supported by the apparatus body,
When the cutting edge on the lower side of the front end of the movable grate bar slides on the upper surface as the plane of the fixed grate bar, the cutting edge on the lower side of the front end of the movable grate bar becomes a predetermined straight line along the upper surface of the fixed grate bar. On the basis of the reference displacement amount that goes up and down with respect to the reference displacement amount, a first displacement amount that is opposite in direction to this reference displacement amount is plotted on the upper surface of the movable grate bar to form a first curved surface portion. The opposite second displacement amount is plotted on the upper surface of the fixed grate bar to form a second curved surface portion, and the first displacement amount in the first curved surface portion and the second displacement amount in the second curved surface portion are at predetermined positions. Is set so that the sum of the first displacement amount and the second displacement amount is equal to the reference displacement amount.