Combustion device and incinerator equipped therewith

Abstract

To provide a combustion device comprising a mechanism for preventing blockage of air ports of fire grates, and an incinerator comprising the combustion device.SOLUTION: A combustion device comprises a plurality of movable fire grates, a driving part having the function of rocking the movable fire grates in a front-rear direction and rocking front ends of the movable fire grates in an up-down direction, and an actuator for operating the driving part. The driving part may operate so as to lift the front ends upward to incline the movable fire grates when moving the movable fire grates rearward.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] One embodiment of the present invention relates to a combustion device and an incinerator equipped with the same.

Background Art

[0002] Conventionally, a stoker-type incinerator is known as a waste incineration facility for incinerating waste such as municipal solid waste (for example, Patent Document 1). A stoker-type incinerator is an incineration facility that incinerates waste using a combustion device in which members called fire grates are arranged in a stepped manner. Usually, in a stoker-type incinerator, air is sent to the lower part of the fire grate, and air is supplied toward the waste from air openings provided at the tips of the fire grate. The air supplied to the waste supplies oxygen necessary for combustion to the waste and assists in the combustion of the waste. Also, the supplied air plays a role in stabilizing the temperature inside the furnace.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In recent years, due to reasons such as reduction of electricity costs, there has been a tendency to suppress the amount of air supplied into the furnace. As a result, the temperature of the outer peripheral part of the combusted material often exceeds 1500°C. When the temperature of the outer peripheral part of the combusted material rises, low-temperature melts (materials such as aluminum and glass with low melting points) mixed in the incineration ash melt on the fire grate. At this time, the melted low-temperature melt may come into contact with air at the air openings of the fire grate and be cooled, possibly blocking the air openings. If the air openings of the fire grate are blocked, the normal air outlets will be biased, and the temperature distribution inside the furnace may not be stabilized, or unburned gas may be generated and a partial explosion may occur inside the furnace. In particular, the stabilization of the furnace temperature is an important factor for the decomposition of dioxins, and the explosion of unburned gas results in damage to the furnace wall.

[0005] This invention has been made in view of the above-mentioned problems, and one of its objectives is to provide a combustion device equipped with a mechanism for preventing blockage of the air vents of the grate, and an incinerator equipped with the same. [Means for solving the problem]

[0006] A combustion apparatus according to one embodiment of the present invention includes a plurality of movable grates, a drive unit having the function of swinging the movable grates in the front-rear direction and swinging the front end of the movable grates in the up-down direction, and an actuator that operates the drive unit.

[0007] The drive unit may also be operated to tilt the movable grate by lifting its front end upward when the movable grate is moved backward.

[0008] The drive unit may include a support rod extending in the left-right direction below the plurality of movable grates, and a connecting rod connecting the support rod and the movable grates. In this case, the connecting rod may be rotatably connected to the movable grates.

[0009] The movable grates may consist of multiple movable grates arranged adjacent to each other in the left-right direction. The connecting rod may be connected to each of the multiple movable grates arranged adjacent to each other in the left-right direction.

[0010] The combustion apparatus may further include a plurality of fixed grates. In this case, the movable grates and the fixed grates may be arranged alternately in the left-right direction.

[0011] The drive unit may include a link mechanism connected to the actuator.

[0012] The actuator may be an extendable power cylinder. The power cylinder may be rotatably supported such that the connection to the link mechanism can swing vertically.

[0013] The drive unit may oscillate the plurality of movable grates arranged in the front-to-back direction as a whole.

[0014] An incinerator in one embodiment of the present invention comprises a combustion chamber and any of the above-described combustion devices arranged in the combustion chamber. [Brief explanation of the drawing]

[0015] [Figure 1] This is a schematic diagram showing the configuration of a stoker-type incinerator in one embodiment of the present invention. [Figure 2] This figure shows the configuration of a combustion device in one embodiment of the present invention. [Figure 3] This is a schematic diagram showing the configuration of a combustion device in one embodiment of the present invention, viewed from the side. [Figure 4] This is a schematic diagram showing the internal configuration of a combustion device in one embodiment of the present invention, viewed from the front. [Figure 5] This is a schematic diagram showing a top view of a part of the combustion device in one embodiment of the present invention. [Figure 6] This is a diagram illustrating the operation of a combustion device in one embodiment of the present invention. [Figure 7] This is a schematic diagram showing the configuration of a combustion device in one embodiment of the present invention, viewed from the side. [Modes for carrying out the invention]

[0016] Embodiments of the present invention will be described below with reference to the drawings. However, the present invention can be implemented in various forms without departing from its essence, and is not to be interpreted as being limited to the embodiments described below. In order to make the explanation clearer, the drawings may schematically represent the size, width, thickness, shape, etc. of each part compared to the actual embodiment, but these are merely examples and do not limit the interpretation of the present invention. In this specification and in each drawing, elements having the same function as those described with respect to previously shown drawings are denoted by the same reference numerals, and redundant explanations may be omitted.

[0017] (First Embodiment) [Configuration of Incinerator] FIG. 1 is a schematic diagram showing the configuration of a stoker-type incinerator 10 according to an embodiment of the present invention. The incinerator 10 is a facility for incinerating waste such as household waste that has been carried in, and the waste is incinerated and reduced in volume and rendered harmless by incineration treatment.

[0018] The incinerator 10 of the present embodiment includes an input hopper 11, a combustion chamber 12, a re-combustion chamber 13, a combustion device 100, a falling ash conveyor 14, and an ash discharge device 15. However, the configuration of the incinerator 10 shown in FIG. 1 is only an example regarding a part of the configuration of the incinerator 10. Although not shown, the incinerator 10 may be provided with other elements such as a garbage crane for inputting waste, a heat exchanger for generating combustion air sent to the combustion device 100, and a blower for sending air to the combustion chamber 12 and the re-combustion chamber 13.

[0019] The input hopper 11 functions as an input port for inputting waste into the combustion chamber 12. Although not shown, a hopper gate that functions as a lid of the input hopper 11 is provided inside the input hopper 11. Generally, waste such as household waste transported from the outside is stored in a garbage pit (not shown) provided adjacent to the combustion chamber 12. Thereafter, the waste is transported from the garbage pit by a garbage crane and input into the combustion chamber 12 through the input hopper 11.

[0020] The combustion chamber 12 is a space for burning the input waste, and the combustion device 100 is arranged therein. In the combustion chamber 12, drying treatment, combustion treatment, and afterburning treatment of the waste are performed above the combustion device 100. In the combustion treatment, the waste is efficiently burned while being mixed with air. The primary combustion gas generated by the combustion of the waste is supplied to the re-combustion chamber 13 arranged above the combustion chamber 12.

[0021] The combustion device 100 has a structure in which multiple grates (stokers) are arranged in a row, and is a device that efficiently burns waste while transporting it. The multiple grates include movable grates (movable grates) and fixed grates (fixed grates), and the movable grates swing in the back-and-forth direction to transport the waste on the grates downstream.

[0022] The combustion device 100 may be divided into multiple stages depending on the purpose, for example, into a drying stage, a combustion stage, a post-combustion stage, etc. As shown in Figure 1, combustion air is supplied to the lower part of the combustion device 100 from a blower or the like (not shown). The specific configuration of the combustion device 100 will be described later.

[0023] The re-combustion chamber 13 is a space for re-combusting the primary combustion gas generated in the combustion chamber 12. Inside the re-combustion chamber 13, the supplied primary combustion gas remains at a temperature of approximately 950°C for more than 2 seconds. Therefore, unburned gases contained in the primary combustion gas are completely combusted in the re-combustion chamber 13. In this embodiment, the secondary combustion gas generated by complete combustion in the re-combustion chamber 13 is supplied to a heat exchanger (not shown) via the flue 13a. The exhaust gas discharged from the incinerator 10 is finally cooled and rendered harmless before being released into the atmosphere.

[0024] The ash conveyor 14 is equipment for transporting incinerated ash and the like that falls from the combustion device 100. Although not shown in the diagram, in this embodiment, the incinerated ash and the like that transported by the ash conveyor 14 are sent back into the combustion chamber 12 together with air from the blower.

[0025] The ash removal device 15 is equipment that transports the incinerated ash burned in the combustion chamber 12 to an ash pit (not shown). The incinerated ash stored in the ash pit is removed to the outside using an ash crane (not shown) or the like.

[0026] [Configuration of the combustion device] Figure 2 shows the configuration of a combustion device 100 in one embodiment of the present invention. Specifically, Figure 2(A) is a perspective view showing the external appearance of the combustion device 100, and Figure 2(B) is an enlarged view of the portion 100a shown in Figure 2(A). As shown in Figure 2(A), the combustion device 100 is designed so that the upstream side (rear) and the downstream side (front) are higher and lower respectively in the path through which the waste moves. For the sake of explanation, some elements constituting the combustion device 100 (for example, the drive unit 130 which will be described later) are not shown.

[0027] As shown in Figure 2(A), the combustion apparatus 100 has a structure in which a plurality of grates 120 are arranged on the apparatus body 110. The apparatus body 110 includes side frames 111, an upstream support frame 112, and a downstream support frame 113. The plurality of grates 120 are arranged between two side frames 111 that face each other.

[0028] The multiple grates 120 include movable grates 121 and fixed grates 122. The movable grates 121 and fixed grates 122 are arranged in a stepped manner from the upstream side to the downstream side, and adjacent grates in the front-to-back direction (D1 direction) partially overlap each other. In addition, the movable grates 121 and fixed grates 122 are arranged alternately in the left-to-right direction (D2 direction). That is, the combustion device 100 has a configuration in which a movable row composed of multiple movable grates 121 and a fixed row composed of multiple fixed grates 122 are arranged alternately in the left-to-right direction. However, the configuration of the combustion device 100 is not limited to this example, and the grates 120 may be arranged on substantially the same plane from the upstream side to the downstream side, and the waste may be transported horizontally.

[0029] As shown in Figure 2(B), in this embodiment, multiple grates arranged in the left-right direction constitute a single unit for the movable grate 121 and the fixed grate 122. Specifically, the movable grate 121 is composed of three movable grates 121a to 121c arranged in the left-right direction. Although not shown in the figure, the fixed grate 122 is similarly composed of multiple fixed grates arranged in the left-right direction as a single unit. When multiple grates are used as a unit as in this embodiment, combustion air is supplied through the gaps in each grate, which has the advantage of allowing waste to be burned more efficiently. In this embodiment, an example is shown in which three movable grates 121a to 121c constitute a single unit, but there is no limit to the number of grates that constitute a unit.

[0030] Figure 3 is a schematic diagram showing the configuration of the combustion device 100 in one embodiment of the present invention as viewed from the side. Figure 4 is a schematic diagram showing the internal configuration of the combustion device 100 in one embodiment of the present invention as viewed from the front.

[0031] As shown in Figures 3 and 4, the combustion apparatus 100 includes a drive unit 130 for driving the movable grate 121 and an actuator 140 for operating the drive unit 130. The drive unit 130 is connected to the movable grate 121, and by operating the drive unit 130 using the actuator 140, the movable grate 121 can be swung. Specifically, the drive unit 130 has the function of swinging the movable grate 121 in the front-rear direction and swinging the front end of the movable grate 121 in the up-down direction.

[0032] In the combustion apparatus 100 of this embodiment, the drive unit 130 includes a link mechanism 131 connected to the actuator 140, a link rod 132, a side plate 133, a support rod 134, and a connecting rod 135.

[0033] As shown in Figure 3, the link mechanism 131 includes a first link arm 131a that rotates around a rotation axis 31a, a second link arm 131b rotatably connected to one end of the first link arm 131a, and a third link arm 131c rotatably connected to one end of the second link arm 131b. The other end of the first link arm 131a is connected to the actuator 140. One end of the third link arm 131c is connected to the link rod 132.

[0034] As shown in Figure 4, the link rod 132 engages with the side plate 133. As will be described in detail later, the link rod 132 is inserted into a through hole 111a (see Figure 3) provided in the side frame 111, and further inserted into a first opening 133a (see Figure 6) provided in the side plate 133. The side plate 133 is supported by a rail section 116, which consists of a base 114 fixed to the side frame 111 and a pair of hold plates 115 fixed upward from the base 114. Therefore, the side plate 133 can move in the front-rear direction along the rail section 116 in accordance with the movement of the link rod 132 (more precisely, the movement of the third link arm 131c).

[0035] As shown in Figure 3, the through-hole 111a provided in the side frame 111 is preferably a curved elongated hole. The through-hole 111a defines the movement of the third link arm 131c and the link rod 132. That is, when the link mechanism 131 is activated, the third link arm 131c rotates clockwise along the through-hole 111a.

[0036] Furthermore, as shown in Figure 4, a support rod 134 is also engaged with the side plate 133. As will be described in detail later, the support rod 134 is inserted into a second opening 133b (see Figure 6) provided in the side plate 133. Therefore, when the side plate 133 moves in the front-rear direction, the support rod 134 also moves in the front-rear direction.

[0037] The support rod 134 is positioned below the multiple grates (movable grates 121 and fixed grates 122) and extends in the left-right direction (D2 direction). Below each of the movable grates 121a to 121c, multiple connecting rods 135 are fixed to the support rod 134, corresponding to each of the movable grates 121a to 121c.

[0038] Each connecting rod 135 extends in the vertical direction (D3 direction) and is rotatably connected to the movable grates 121a to 121c. As shown in Figure 4, the movable grate 121a has a pivot shaft 21a fixed in the left-right direction and is connected to the connecting rod 135 via a bearing 21b. The other movable grates 121b and 121c have a similar structure and are therefore omitted from this description. As the side plate 133 moves, the connecting rods 135 and the movable grates 121a to 121c move in the front-rear direction along with the support rod 134.

[0039] In this embodiment, a drive unit 130 is provided corresponding to each of the side frames 111 located on both the left and right sides, and a support rod 134 is spanned between two side plates 133 located on the left and right sides. However, the combustion device 100 of this embodiment is not limited to the configuration shown in Figure 4, and the drive unit 130 may be located on only one of the left or right sides. However, even in that case, it is desirable that the support rod 134 be configured to support both ends.

[0040] Figure 5 is a schematic diagram showing a top view of a part of the combustion apparatus 100 in one embodiment of the present invention. Specifically, Figure 5 corresponds to a top view of a unit consisting of movable grates 121a to 121c. As shown in Figure 5, the movable grates 121a to 121c are placed on a plurality of support bars 152 that are stretched between a pair of support plates 151 that extend in the front-rear direction.

[0041] The support plate 151 is fixed to the main body 110 of the device. Specifically, the support plate 151 may be fixed to any of the side frame 111, support frame 112, and support frame 113, or it may be fixed to the main body 110 of the device by any other method.

[0042] Multiple support bars 152 are arranged at predetermined intervals. In this embodiment, rod-shaped members with a circular cross-section are used as support bars 152, but the system is not limited to this example, and the cross-section may be polygonal or semicircular. As will be described later, the movable grates 121a to 121c swing in the front-rear direction, and the distance traveled by the movable grates 121a to 121c at this time is set to be less than or equal to the distance between each support bar 152.

[0043] Let's return to Figure 3 and continue the explanation. In this embodiment, the actuator 140 is a retractable power cylinder. As the power cylinder, an electric cylinder, hydraulic cylinder, pneumatic cylinder, or the like can be used. As shown in Figure 3, the actuator 140 is pivotally supported so that the working part 141 (the part connected to the link mechanism 131) can swing in the vertical direction (direction D3).

[0044] In this embodiment, since a power cylinder is used as the actuator 140, the piston rod of the power cylinder functions as the working part 141. The actuator 140 is rotatably supported with a pivot axis 142 extending in the left-right direction (D2 direction) as the pivot center. Therefore, when the actuator 140 extends and retracts, and the first link arm 131a rotates, the working part 141 of the actuator 140 swings up and down along the rotational trajectory of the first link arm 131a. With this configuration, the first link arm 131a connected to the actuator 140 can be rotated smoothly.

[0045] [Operation of the combustion device] Figure 6 is a diagram illustrating the operation of the combustion device 100 in one embodiment of the present invention. In this embodiment, the combustion device 100 achieves a distinctive operation in which the movable grate 121 not only swings in the front-rear direction but also lifts its front end upward and tilts. The specific operation of the drive unit 130 and the movable grate 121 will be described below.

[0046] The state shown in Figure 6(A) represents the initial state, i.e., when the movable grate 121 is in its furthest forward (downstream) position (when it is pushed furthest forward). The side plate 133 has a first opening 133a and a second opening 133b. The link rod 132 (see Figure 4) is engaged with the first opening 133a, and the support rod 134 is engaged with the second opening 133b.

[0047] In this embodiment, the first opening 133a is exemplified as a rectangular opening with a longitudinal direction in the vertical direction, but it is not limited to this example, and may be an arc-shaped opening that protrudes toward the right side (upstream side of the combustion device 100) in Figure 6(A). The second opening 133b may be any shape that does not hinder the vertical movement of the support rod 134, and may be a polygonal shape as shown in Figure 6(A). As will be described later, the side plate 133 is inclined to lift its front end. In this case, it is preferable that the outer shape of the second opening 133b be a parallelogram so that the inner wall of the second opening 133b does not hinder the movement of the support rod 134.

[0048] In the state shown in Figure 6(A), the link rod 132 is located near the upper end of the first opening 133a. The support rod 134 is located near the lower end of the second opening 133b. The link mechanism 131 is in the state shown in Figure 3. That is, the actuator 140 is in its most retracted state, and the connection between the third link arm 131c and the link rod 132 is located near the upper end of the through hole 111a.

[0049] When the actuator 140 begins its extension operation, it transitions to the state shown in Figure 6(B). The state shown in Figure 6(B) is when the movable grate 121 is in its furthest rearward (upstream) position (when it has been pushed furthest back). In the process from the state shown in Figure 6(A) to the state shown in Figure 6(B), the third link arm 131c rotates clockwise, causing the link rod 132 inserted into the first opening 133a to move downward while pushing against the inner wall on the rear side of the first opening 133a. The dotted circle 132a in Figure 6(B) indicates the position of the link rod 132 in the state shown in Figure 6(A).

[0050] The side plate 133 moves backward as the third link arm 131c rotates (i.e., as the link rod 132 rotates). As the side plate 133 moves, the support rod 134 is pushed backward by the inner wall on the front side of the second opening 133b. Consequently, the movable grate 121, which is connected to the support rod 134 via the connecting rod 135, also moves backward.

[0051] Here, the operation of the link mechanism 131 when transitioning to the state shown in Figure 6(B) will be explained using Figure 3. When the actuator 140 begins its extension movement, the first link arm 131a rotates counterclockwise. As a result, the second link arm 131b is pushed diagonally upward to the left, and in conjunction with the movement of the second link arm 131b, the third link arm 131c rotates clockwise while moving forward (downstream). At this time, one end of the third link arm 131c (the part connected to the link rod 132) moves downward along the through hole 111a provided in the side frame 111.

[0052] In the state shown in Figure 6(B), the movable grate 121 is in its rearmost position, and the side plate 133 is also in its rearmost position. At this time, the rear end of the side plate 133 (the rear end), specifically the portion of the side plate 133 where the first opening 133a is provided, protrudes away from the base 114 and the hold plate 115. In other words, in the state shown in Figure 6(B), the rear end of the side plate 133 is positioned to protrude rearward from the base 114 and the hold plate 115, and in a plan view, the first opening 133a does not overlap with the base 114.

[0053] If the extension operation of the actuator 140 is continued from the state shown in Figure 6(B), the state shown in Figure 6(C) will be reached. In the state shown in Figure 6(C), the rear end of the movable grate 121 is pushed downward and the front end (front end) is lifted upward. At this time, the movable grate 121 rotates clockwise around the corner on the rear side of the base 114 as the pivot point.

[0054] In the transition from the state shown in Figure 6(B) to the state shown in Figure 6(C), the rotation of the third link arm 131c accompanying the extension of the actuator 140 causes the link rod 132 to move downward. The link rod 132 pushes down the rear end of the side plate 133 while remaining in contact with the lower end of the first opening 133a. At this time, the front end of the side plate 133 is lifted upward, causing the support rod 134, which is in contact with the lower end of the second opening 133b, to be lifted upward. As a result, the connecting rod 135 connected to the support rod 134 is also lifted upward, and the front end of the movable grate 121 moves upward. Since the connecting rod 135 and the movable grate 121 are rotatably connected, the movable grate 121 tilts with its front end lifted.

[0055] When the actuator 140 starts to retract from the state shown in Figure 6(C), it returns to the state shown in Figure 6(A) through the reverse operation of the operation described above.

[0056] As described above, the combustion apparatus 100 of this embodiment can swing the movable grate 121 in the front-rear direction and the front end of the movable grate 121 in the up-down direction by the operation of the drive unit 130. In this embodiment, by lifting the front end of the movable grate 121 upward, it is possible to physically remove low-melting-point molten material adhering to the vicinity of the air vent provided at the front end of the movable grate 121. In other words, according to this embodiment, it is possible to provide a combustion apparatus 100 equipped with a self-cleaning mechanism that prevents the air vent of the movable grate 121 from becoming blocked during operation.

[0057] (Second Embodiment) In the first embodiment, for the sake of simplicity, an example was shown in which the length of the movable grate 121 in the front-to-back direction and the length of the side plate 133 are approximately the same. However, in order to reduce the number of parts, it is preferable to use a single side plate 133 to drive multiple grate groups arranged in the front-to-back direction all at once. Such an example will be explained with reference to Figure 7.

[0058] Figure 7 is a schematic diagram showing the configuration of a combustion device 100-1 in one embodiment of the present invention, viewed from the side. Note that elements common to both Figure 3 and Figure 7 may be described using the same reference numerals, and their explanation may be omitted.

[0059] In the example shown in Figure 7, three movable grates 221a to 221c are engaged with a single side plate 233, arranged in the front-to-back direction. Specifically, the side plate 233 has a first opening 233a and two second openings 33ba, 33bb, and 33bc. The first opening 233a is a rectangular opening located at the rear end of the side plate 233, similar to the example shown in Figure 6. A link rod 132 connected to a third link arm 131c is inserted into the first opening 233a.

[0060] The second openings 33ba, 33bb, and 33bc are located at positions corresponding to the movable grates 221a to 221c, respectively. Support rods 134, which are connected to the movable grates 221a to 221c via connecting rods 135, are inserted into each of the second openings 33ba, 33bb, and 33bc. However, in the example shown in Figure 7, the heights H1 to H3 of each of the second openings 33ba, 33bb, and 33bc are different. Specifically, the heights H1 to H3 increase as they are located further forward of the side plate 233.

[0061] In the example shown in Figure 7, the specific operation of the movable grates 221a to 221c is the same as the operation described using Figures 6(A) to 6(C). The difference from the example shown in Figure 6 is that when the side plate 233 is tilted to its rearmost position, the front ends of the three movable grates 221a to 221c are lifted together. At this time, the second openings 33ba, 33bb, and 33bc corresponding to each movable grate 221a to 221c have different heights H1 to H3 so as to compensate for the difference in distance from the pivot point of the side plate 233 (i.e., the rear corner of the base 114).

[0062] As shown in Figure 7, the distance from the lower end of the second opening 33ba to the support rod 134 that engages with the second opening 33ba is the longest, and the distance from the lower end of the second opening 33bc to the support rod 134 that engages with the second opening 33bc is the shortest. In other words, the movable grate 221a located at the very front of the side plate 233 rises higher later than the movable grate 221c located at the very rear of the side plate 233. Therefore, by adjusting the heights H1 to H3 of each of the second openings 33ba, 33bb, and 33bc, and the position of the support rods 134 connected to each of the movable grates 221a to 221c, it is possible to equalize the amount the front end of each movable grate 221a to 221c rises.

[0063] As described above, in the example shown in Figure 7, it is possible to oscillate three movable grates 221a to 221c that are continuous in the front-rear direction using a single side plate 233, and furthermore, the amount of lift when the front end of each movable grate 221a to 221c is lifted can be made approximately the same.

[0064] The embodiments of the present invention can be combined as appropriate, insofar as they do not contradict each other. Based on the embodiments described above, any additions, deletions, or design changes made by those skilled in the art, or additions, omissions, or changes in processes, are also included within the scope of the present invention, as long as they retain the essence of the invention.

[0065] Furthermore, any effects or benefits other than those brought about by the embodiments described above, if they are clear from the description herein or easily predictable to a person skilled in the art, are naturally considered to be brought about by the present invention. [Explanation of Symbols]

[0066] 10... Incinerator, 11... Input hopper, 12... Combustion chamber, 13... Re-combustion chamber, 13a... Flue, 14... Falling ash conveyor, 15... Ash removal device, 21a... Rotating shaft, 21b... Bearing, 31a... Rotating shaft, 33ba, 33bb, 33bc... Second opening, 100, 100-1... Combustion device, 110... Device body, 111... Side frame, 111a... Through hole, 112, 113... Support frame, 114... Base, 115... Hold plate, 116... Rail section, 120... Grate, 121, 121a~121c... Movable grate, 1 22...Fixed grate, 130...Drive unit, 131...Link mechanism, 131a...First link arm, 131b...Second link arm, 131c...Third link arm, 132...Link rod, 133...Side plate, 133a...First opening, 133b...Second opening, 134...Support rod, 135...Connecting rod, 140...Actuator, 141...Operating part, 142...Rotating shaft, 151...Support plate, 152...Support bar, 221a~221c...Movable grate, 233...Side plate, 233a...First opening

Claims

1. Multiple movable grates, A drive unit having the function of swinging the movable grate in the front-rear direction and swinging the front end of the movable grate in the up-down direction, An actuator that operates the aforementioned drive unit, Includes, The combustion apparatus wherein, when the movable grate is moved backward, the drive unit operates to lift the front end of the movable grate upward and tilt the movable grate, thereby separating the front end of the movable grate from the downstream movable grate.

2. The drive unit includes a support rod extending in the left-right direction below the plurality of movable grates, and a connecting rod connecting the support rod and the movable grates. The combustion apparatus according to claim 1, wherein the connecting rod is rotatably connected to the movable grate.

3. The aforementioned movable grate is composed of a unit including a plurality of movable grate components arranged adjacent to each other in the left-right direction. The combustion apparatus according to claim 2, wherein the connecting rod is connected to each of the plurality of movable grate components that are arranged adjacent to each other in the left-right direction.

4. Multiple movable grates, Multiple fixed fire grates, A drive unit having the function of swinging the movable grate in the front-rear direction and swinging the front end of the movable grate in the up-down direction, An actuator that operates the aforementioned drive unit, Includes, A combustion apparatus in which the movable grates and the fixed grates are arranged alternately in the left-right direction.

5. The combustion apparatus according to any one of claims 1 to 4, wherein the drive unit includes a link mechanism connected to the actuator.

6. The actuator is a retractable power cylinder, The combustion apparatus according to claim 5, wherein the power cylinder is rotatably supported so that its working portion can swing vertically.

7. A plurality of movable grates arranged in the front-to-back direction, A drive unit having the function of swinging the movable grate in the front-rear direction and swinging the front end of the movable grate in the up-down direction, An actuator that operates the aforementioned drive unit, Includes, The drive unit is a combustion device that oscillates the plurality of movable grates arranged in the front-to-back direction in a unified manner.

8. The combustion chamber and A combustion device according to any one of claims 1 to 7, arranged in the combustion chamber, An incinerator equipped with the necessary equipment.

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