JP3689151B2 - Oscillating stoker for waste incineration - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an improvement of a staircase stoker provided in a waste incinerator, and by swinging each adjacent row of stepped grate arranged in the left-right direction in the reverse direction, The present invention relates to a rocking stoker for incineration of waste, which can incinerate waste more efficiently.
[0002]
[Prior art]
As a waste incinerator stoker, for example, those having a structure as shown in FIGS. 6 and 7 have been widely used.
This waste incineration stoker has a plurality of rows of fixed grate a and movable grate b arranged alternately in the left-right direction (horizontal width direction) of an incinerator (not shown), and a rotary drive shaft arranged in the left-right direction. A drive arm d is attached to c in one direction, and the drive arm d and the movable grate b are connected via a connecting member g and a connecting rod e.
The movable grate b is swung back and forth through the drive arm d, the connecting rod e, and the connecting member g by rotating the rotary drive shaft c in a predetermined angular range in the forward and reverse directions by the forward and backward driving of the cylinder f. In addition, the waste thrown into the incinerator is agitated and moved forward so that the waste is efficiently incinerated.
[0003]
[Problems to be solved by the invention]
However, in the conventional oscillating stoker for waste incineration, the fixed grate a and the movable grate b are alternately arranged so that only the movable grate b is oscillated in the front-rear direction. As shown in FIGS. 8 and 9, the longitudinal movement width st and the vertical drop h of the movable grate b are relatively small. As a result, there is a problem that the waste cannot be sufficiently extruded and stirred, and the waste cannot be burned efficiently.
[0004]
In addition, since the dust on the fixed grate a is pushed forward only by sliding movement, depending on the type of the garbage, there is a problem that the dust adheres to the surface of the fixed grate a and does not move, and the clinker is attached. there were.
[0005]
Furthermore, as shown in FIG. 9, the dust on the movable grate b moves up and down 2 h in the vertical direction from the reference position, but the dust in the fixed state on the fixed grate a is on the movable grate b. There is a case where the downward movement of the garbage is interfered and the garbage does not fall smoothly. As a result, there has been a problem that combustion efficiency is lowered when the waste is not sufficiently extruded and stirred and the dust layer on the stoker is thick.
[0006]
The present invention has been made in view of the above-described conventional problems, and can uniformly extrude and agitate all of the dust on the surface of the staircase stoker, and the combustion air is sufficiently supplied to achieve combustion efficiency. It is possible to provide a rocking oscillating stoker for incineration in which waste incineration performance is not hindered by stagnation of the clinker.
[0007]
[Means for Solving the Problems]
The present invention was created to achieve the above object, and the invention of claim 1 is directed to a plurality of rows of grate arranged in the left-right direction, and a horizontal direction below the plurality of rows of grate. A first connecting member formed by connecting and fixing a plurality of rows of grate every other row, and a first connecting member arranged in parallel with the first connecting member, and remaining fires in the plurality of rows of grate A second connecting member formed by connecting and fixing a grid row, and the first driving arm and the second driving arm are mounted in a projecting manner in opposite directions at an appropriate position in the axial direction. The rotation drive shaft, the first connection rod and the second connection rod connecting the first connection member and the first drive arm, and the second connection rod and the second connection member, respectively, and the rotation drive. And a drive device that rotates the shaft in a certain angular range forward / reverse direction, By constant angular rotation of the rotation drive shaft to forward and reverse directions, is to that to reverse before switching simultaneously the grate rows adjacent to each opposite direction to the basic structure of the invention.
[0008]
According to a second aspect of the invention, in the first aspect of the invention, the first drive arm and the second drive arm are fixed to the rotary drive shaft at an angular interval of 120 ° to 180 ° .
[0009]
The invention of claim 3 is the invention of claim 1, wherein the drive device of the rotary drive shaft is a cylinder device or a motor device.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows the overall structure of an embodiment of a rocking stoker for waste incineration according to the present invention, FIG. 2 is a schematic side view of the rocking stoker for waste incineration, and FIG. 3 is an AA view of FIG. It is the cross-sectional schematic diagram which abbreviate | omitted some in it. 4 shows the rocking width in the front-rear direction of the rock incinerator for waste incineration, and FIG. 5 shows the height of rocking in the vertical direction of the rocking stoker for waste incineration.
1 to 3, 1 is a rocking stoker for incineration, 2 is a drive cylinder, 3 is a rotary drive shaft, 4A and 4B are drive arms, 5A and 5B are grate, and 6A and 6B are connected.杆, 7A and 7B are connecting members, 8 is a support frame, 9 is a frame, 10 and 11 are sliding supports, 12 is an air duct, and 13 is a furnace wall.
[0012]
The oscillating stalker 1 is disposed in the inside in a form in which a plurality of rows of grate 5A and 5B are arranged in the lateral width direction (left and right direction) of a waste incinerator (not shown), As the grate 5A and 5B are moved forward and backward by a predetermined distance in the direction), the dust layer (not shown) supplied to the upper rear is pushed forward while being stirred and directed upward from below the stoker 1 As the combustion air is supplied, it is sequentially burned.
That is, a plurality of rows of grate 5A and 5B are slidable in the front-rear direction via the frame 9 on the sliding support bases 10 and 11 arranged in parallel in the left-right direction (horizontal width direction) at regular intervals. By arranging, the stoker 1 is formed, and combustion air is supplied from below the stoker 1 through the air duct 12.
[0013]
The base of the cylinder 2 is attached to the wall portion 13 of the incinerator and is suspended downward. The tip of the cylinder rod 2 a is connected to the side of the outer peripheral surface of the rotary drive shaft 3. The rotation drive shaft 3 is rotated forward and backward alternately in the clockwise direction and in the counterclockwise direction by the forward / backward drive of the cylinder rod 2a by the drive of the cylinder 2.
[0014]
The rotary drive shaft 3 penetrates the furnace wall or is disposed outside the furnace wall so as to avoid the penetration. The rotary drive shaft 3 is rotatably and horizontally attached to the left and right support frames 8 and 8 via bearings (not shown). It is supported. The rotary drive shaft 3 is provided with drive arms 4A and 4A and drive arms 4B and 4B attached at an angular interval of approximately 120 ° to 180 ° in directions opposite to appropriate portions in the axial direction. The base ends of the connecting rods 6A and 6B are connected to the distal ends of the arms 4A and 4B.
[0015]
The grate 5A and 5B are respectively mounted and mounted on the grooved frame 9, and by supporting the grooved frame 9 slidably in the front-rear direction on the sliding support bases 10 and 11, It is disposed inside the incinerator in an obliquely downward posture.
In addition, two connecting members 7A and 7B are arranged in the left-right direction (horizontal width direction) below the grate 5A and 5B, and the grate 5A and 5B are alternately arranged on the connecting members 7A and 7B. Are connected and fixed. That is, the grate 5A and 5A are connected and fixed to the connecting member 7A, and the grate 5B and 5B are connected and fixed to the connecting member 7B.
Furthermore, the tip end portions of the connecting rods 6A and 6B are connected to the connecting members 7A and 7B via pivot pins.
As a result, when the driving cylinder 2 is operated and thereby the rotational drive shaft 3 is rotated forward and backward over a certain angular range (for example, 120 °), the drive arms 4A and 4B, the connecting rods 6A and 6B, and the connecting member 7A -Each grate 5A * 5A and each grate 5B * 5B are moved forward / reverse by a fixed distance in the opposite direction via 7B.
[0016]
In this embodiment, the rotary drive shaft 3 is rotated by the drive cylinder 2, but the shaft 3 is rotated forward / reversely over a certain angle range by a hydraulic motor (not shown). It is good also as a structure.
In this embodiment, each grate is alternately connected and fixed to the two connecting members 7A and 7B, and each grate is moved forward and backward through the connecting members 7A and 7B. The same number of drive arms 4A and 4B as the rows of the grate 5A and 5B are attached to the shaft 3, and the grate 5A and 5B are moved forward and backward through connecting rods 6A and 6B connected to the drive arms 4A and 4B. A configuration may be adopted.
[0017]
Further, in this embodiment, the grate 5A and 5B are moved forward and backward through the rotary drive shaft 3. For example, two drive cylinders are horizontally disposed, and the two drive cylinders are arranged. May be operated forward and backward so that the connecting members 7A and 7B move in opposite directions.
In addition, the mechanism for moving each grate forward / backward is not limited to the one described above. For example, a cam is attached to the shaft of the drive motor, and a roller is brought into contact with the cam surface of the cam to operate the roller. It is also possible to have a structure in which each grate is forward / reversely transmitted to each grate via a power transmission mechanism.
[0018]
According to the oscillating stoker 1 for waste incineration of the present invention, the adjacent grate 5A and 5B are alternately oscillated in the front-rear direction by the forward / reverse rotational drive over a certain angular range of the rotational drive shaft 3, As a result, even if the dust layer on each grate 5A, 5B is thick, it is agitated as a whole.
As shown in FIG. 4, the swing of each grate 5A and 5B is explained by distinguishing each grate 5A and 5B into a G-line grate 5A and a B-line grate 5B. When the grid 5A moves forward, the B-line grate 5B moves backward, and the movement amount in the front-rear direction is 2st (st is the movement amount of the same-line grate). Further, as shown in FIG. 5, when the A-line grate 5A moves upward, the B-line grate 5B moves downward, and its vertical movement amount is 2h (h is the same-line grate). The amount of movement of the lattice).
[0019]
In this way, by moving the A-line grate 5A and the B-line grate 5B simultaneously and in opposite directions, respectively, the grate 5A of each row for stirring the dust on the grate 5A and 5B. The extrusion in the front-rear direction and the vertical drop between 5B can be increased. As a result, even if the dust layer on each grate is relatively thick, the dust is surely and thoroughly agitated and pushed out in a downward direction, so that the combustion air is sufficiently mixed and good garbage combustion is achieved. Is possible.
In addition, each grate 5A, 5B always swings and advances along a staircase while the dust is agitated, so the clinker does not stagnate and the combustion performance of the dust is not hindered by the clinker, The combustion efficiency can be further increased.
[0020]
【The invention's effect】
As described above, the rock incinerator for incineration of claim 1 has a structure in which each of adjacent rows of stepped grate arranged in the left-right direction is moved forward and backward by a certain distance in the reverse direction. The rock on each grate will agitate the dust on the grate more strongly and well. As a result, combustion air can be supplied uniformly, and the combustion efficiency of waste can be increased.
Further, the clinker can be prevented from staying, and the occurrence of clinker can prevent the combustion of garbage from being inhibited.
[0021]
Further, in the rocking stoker for incineration of claims 2 and 3, each of the adjacent grate is moved forward and backward in the reverse direction by driving one rotary drive shaft. As a result, the structure of the grate movement mechanism can be simplified, and each adjacent grate is moved alternately in the reverse direction of forward and backward movement, so the amount of extrusion and the drop of the dust layer on the grate are the same as the conventional garbage. It will be more than double the incinerator stoker.
As a result, even when the dust layer on the grate is thick, all of the dust is completely and sufficiently agitated, the combustion air can be supplied uniformly, and the combustion efficiency of the dust can be increased.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an outline of an embodiment of a rocking stoker for waste incineration according to the present invention.
FIG. 2 is a schematic side view of a rock incinerator for waste incineration showing one embodiment.
FIG. 3 is a schematic vertical cross-sectional view of a waste incineration oscillating stalker with one embodiment omitted.
FIG. 4 is an explanatory view showing a rocking range in the front-rear direction of each grate of the rocking stoker for waste incineration showing one embodiment.
FIG. 5 is an explanatory diagram showing a vertical swing range of each grate of the rock incinerator for garbage incineration showing one embodiment.
FIG. 6 is a schematic side view showing an example of a conventional waste incineration stoker.
FIG. 7 is a longitudinal sectional view of a conventional waste incineration stalker with a part omitted.
FIG. 8 is an explanatory view showing a swing range in the front-rear direction of a grate of a conventional waste incineration stoker.
FIG. 9 is an explanatory view showing a vertical swing range of a grate of a conventional waste incineration stoker.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Swinging stalker for waste incineration 7A, 7B Connection member 2 Drive cylinder 8 Support frame 3 Rotation drive shaft 9 Frame 4A, 4B Drive arm 10, 11 Sliding support 5A, 5B Grate 12 Air duct 6A, 6B Connection杆 13 Furnace wall

Claims (3)

A plurality of rows of grate arranged in the left-right direction, a first connecting member that is arranged in the left-right direction below the plurality of rows of grate, and that couples and fixes the rows of grate every other row, A second connecting member disposed in parallel with the first connecting member and configured to connect and fix the remaining grate rows in the plurality of rows of grate, and disposed in parallel with the two connecting members; A rotary drive shaft mounted in a projecting manner in opposite directions on the first drive arm and the second drive arm at appropriate positions in the direction, between the first connecting member and the first drive arm, and in the second connecting rod, The first connecting rod and the second connecting rod for connecting the second connecting members, respectively, and a drive device for rotating the rotary drive shaft in the forward / reverse direction within a certain angle range. Each adjacent grate train by rotating a certain angle in the direction Incinerator rocking stoker, characterized in that to reverse pre simultaneously switched to the respective opposite direction. The oscillating stoker for a refuse incinerator according to claim 1, wherein the first drive arm and the second drive arm are fixed to the rotary drive shaft at an angular interval of 120 ° to 180 ° . The oscillating stoker for a refuse incinerator according to claim 1, wherein the drive device of the rotary drive shaft is a cylinder device or a motor device .

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