JP2020106193A - Incinerator structure - Google Patents

Abstract

To provide an incinerator structure capable of alleviating stress concentration on a connecting portion between an incinerator body and a terminal part.SOLUTION: An incinerator structure 30A includes: an incinerator body 11 formed to have a cylindrical shape; a support part 31A formed to have an annular shape extended in the circumferential direction and fixed to an outer peripheral surface 11c of the incinerator body 11; and a terminal part 32A engaged with a structure 33 transmitting power between the incinerator body 11 and the terminal part, provided in the circumferential direction of the incinerator body 11 and fixed to the support part 31A.SELECTED DRAWING: Figure 4

Description

The present disclosure relates to a waste incinerator structure.

A rotary stoker incinerator (stoker furnace), which is a kind of waste incinerator, includes a furnace body composed of a grate (stoker, rostrul) having a large number of gas supply holes. The furnace body is formed in a tubular shape and rotates during operation. The waste introduced into the furnace body moves downstream while being stirred by the rotation of the furnace body while being supplied with the primary gas through the gas supply hole. During this stirring and movement, the temperature of the waste rises, the waste is dried and pyrolyzed, and then burned (see Patent Document 1).

As an incinerator having a tubular furnace body, a kiln-type incinerator (rotary kiln, rotary incinerator) is also known (see Patent Document 2). However, the inner surface of the furnace body in the kiln-type incinerator is covered with a heat-resistant material such as brick and does not have the above-mentioned gas supply hole.

JP, 2006-57963, A JP 2000-329471 A

The cylindrical furnace body described above is placed sideways, and the posture is maintained by supporting the outer peripheral surface of the furnace body. An annular member (so-called tire) is provided on the outer periphery of the furnace body, and the annular member and the furnace body are connected by a connecting member such as a spoke or a leaf spring.

In connecting the annular member and the furnace body, the connecting member is connected to a terminal portion fixed to the outer peripheral surface of the furnace body. The terminal portion is formed as a structure separate from the furnace body, and its rigidity is higher than that of the furnace body. Therefore, stress concentration is more likely to occur at the connecting portion between the furnace body and the terminal portion than at the periphery thereof. Such stress concentration becomes a factor that hinders the extension of the operating period of the furnace body.

The present disclosure has been made in view of the above circumstances. That is, an object of the present disclosure is to provide an incinerator structure capable of relieving stress concentration in a connecting portion between a furnace body and a terminal portion.

A first aspect of the present disclosure is an incinerator structure, a tubular furnace body, and a support formed in an annular shape extending in the circumferential direction of the furnace body and fixed to the outer peripheral surface of the furnace body. And a plurality of terminal portions that are engaged with a structure that transmits force between the furnace body and the furnace body, are provided along the circumferential direction of the furnace body, and are fixed to the support portion. And

A second aspect of the present disclosure is an incinerator structure, which engages with a tubular furnace body and a structure that transmits force between the furnace body, and which extends along the outer periphery of the furnace body. And a plurality of terminal portions fixed to the outer peripheral surface of the furnace body, and a plurality of terminal portions fixed to the outer peripheral surface of the furnace body and connecting adjacent terminal portions of the plurality of terminal portions. A gist of the present invention is to provide a connecting portion, and the plurality of terminal portions and the plurality of connecting portions constitute an annular support portion extending in the circumferential direction of the furnace body.

In the incinerator structure according to the first aspect or the second aspect, the furnace body may be made of metal. A plurality of the support parts may be provided for the group of the plurality of terminal parts.

According to the present disclosure, it is possible to provide an incinerator structure capable of relieving stress concentration in the connection portion between the furnace body and the support portion.

1 is a schematic configuration diagram of an incinerator according to an embodiment of the present disclosure. FIG. 2 is a sectional view taken along line II-II shown in FIG. 1. FIG. 3 is a partially enlarged view of the furnace body shown in FIG. 2. It is a sectional view of the incinerator structure concerning a 1st embodiment of this indication. FIG. 5 is a partially enlarged view of the cross-sectional view shown in FIG. 4. (A) is a VIA-VIA sectional view in FIG. 5, and (b) is a VIB-VIB sectional view in FIG. 5. It is a figure which shows the thrust receiving part as a terminal part which concerns on 2nd Embodiment, and a connection part. It is an expanded sectional view of the incinerator structure which adopted the spoke. It is an expanded sectional view which shows the modification of the incinerator structure which adopted the spoke.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In addition, in each figure, the same parts are denoted by the same reference numerals, and overlapping description will be omitted. The incinerator structure according to this embodiment includes a tubular furnace body, and is applicable to a rotary stoker type incinerator and a kiln type incinerator. However, the incinerator structure according to the present embodiment can be applied to other incinerators having the same configuration.

For the sake of convenience, an example in which the incinerator structure is applied to a rotary stoker incinerator (hereinafter, incinerator) will be described. That is, the furnace body of the incinerator structure is formed in a cylindrical shape and rotates around its central axis. In the following description, the axial direction, the circumferential direction, and the tangential direction are the axial direction (longitudinal direction), the circumferential direction, and the tangential direction of the furnace body, respectively.

<First Embodiment>
The first embodiment of the present disclosure will be described. First, the configuration of the incinerator 10 will be described. FIG. 1 is a schematic configuration diagram of an incinerator 10. 2 is a sectional view taken along line II-II shown in FIG. FIG. 3 is a partially enlarged view of the furnace body 11 shown in FIG.

As shown in FIGS. 1 to 3, the incinerator 10 includes a furnace body 11 formed in a tubular shape (see FIG. 2). The furnace body 11 has an inlet 11a for the waste W at an upstream end (left end in FIG. 1) in the axial direction. Similarly, the furnace body 11 has an outlet 11b for the waste W at the downstream end (the left end in FIG. 1) of the furnace body 11. The furnace body 11 is installed in a state in which the outlet 11b is slightly inclined with respect to the horizontal plane (transverse direction in FIG. 1) so as to be lower than the inlet 11a. The furnace body 11 is made of metal, and the material thereof is metal such as carbon steel.

The furnace body 11 is housed in the cover casing 12. The furnace body 11 includes a plurality of water pipes 13, a plurality of fins 14, an inlet-side header pipe 16, and an outlet-side header pipe 17. The water pipes 13 are pipes made of metal that extend in the axial direction, and are arranged in the circumferential direction at predetermined intervals. A seal plate 19 is attached to each water pipe 13. The seal plate 19 extends over substantially the entire length of the water pipe 13 and expands outward in the radial direction.

The fin 14 is a metal strip-shaped member that extends in the axial direction. The fin 14 is located between the two water pipes 13, 13 adjacent to each other. That is, the water pipes 13 and the fins 14 extend in the axial direction and are alternately arranged in the circumferential direction at a predetermined interval. A plurality of pores 15 are formed in the fin 14. The fin 14 connects the two water pipes 13, 13 located on both sides thereof. By this connection, the fin 14 with the pores 15 and the water pipe 13 form a so-called grate. The water pipe 13 and the fins 14 form an outer peripheral surface 11c of the furnace body 11, and the furnace body 11 has a tubular shape as a whole.

The inlet-side header pipe 16 is attached to the upstream end (the left end in FIG. 1) of the furnace body 11. On the other hand, the outlet-side header pipe 17 is attached to the downstream end (right end in FIG. 1) of the furnace body 11. The inlet-side header pipe 16 and the outlet-side header pipe 17 communicate with the water pipe 13 between them.

Furthermore, the outlet-side header pipe 17 is connected to a rotary joint 18 provided on the downstream side (right side in FIG. 1). The rotary joint 18 is a supply path and a discharge path of water flowing through the water pipe 13. That is, water returns from the rotary joint 18 to the rotary joint 18 again via the outlet-side header pipe 17, the water pipe 13, and the inlet-side header pipe 16. By using high temperature boiler water as the circulating water, the water pipe 13 and the fins 14 can be maintained at a temperature at which low temperature corrosion or high temperature corrosion is unlikely to occur.

As shown in FIG. 1, an annular member (tire) 20 is provided on the outer periphery of the furnace body 11. The annular member 20 is located on the inlet 11a side and the outlet 11b side of the furnace body 11. The inner diameter of the annular member 20 is larger than the outer diameter of the furnace body 11. The annular member 20 and the furnace body 11 are connected by a leaf spring 21 as a connecting member so as to be slidable in the radial direction (see FIG. 4).

The annular member 20 is mounted on the roller 22. The roller 22 is rotated by the drive device 23, and the rotation causes the furnace body 11 to rotate. A drive mechanism such as a pin gear may be adopted as the drive device 23. In this case, the annular member 20 is directly driven by the drive device 23.

A hopper 24 is provided on the inlet 11 a side of the furnace body 11. The waste W put into the hopper 24 is supplied to the furnace body 11 by a dust feeder (not shown).

Below the furnace body 11, a wind box (duct) 25 communicating with the lower end of the cover casing 12 is provided. The primary gas (for example, air) supplied to the wind box 25 is supplied from the lower part of the furnace body 11 into the furnace body 11 through the pores 15.

As shown in FIGS. 1 and 2, the wind box 25 is divided in the axial direction and the circumferential direction. That is, a plurality of primary gas supply paths communicating with the furnace body 11 are provided in the axial direction and the circumferential direction of the furnace body 11. On the other hand, the supply amount of the primary gas to each supply passage can be adjusted by using a flow rate adjusting device (not shown) such as a damper. For example, the supply destination and supply amount of the primary gas can be optimized according to the component, amount and distribution of the waste W remaining in the furnace body 11.

A sealing device 26 is installed at each outlet of the divided air box 25. When the furnace body 11 rotates, the sealing plates 19 attached to the water tubes 13 come into contact with the sealing device 26 one after another. By this contact, each supply path is appropriately partitioned, and the primary gas can be appropriately supplied to a desired location.

In the incinerator 10 described above, the waste W is supplied into the furnace body 11 while the furnace body 11 is rotating at a low speed by the drive device 23. The waste W in the furnace body 11 is agitated as the furnace body 11 rotates, and gradually moves to the downstream side due to the inclination of the furnace body 11.

While the waste W is moving inside the furnace body 11, the primary gas is supplied from the wind box 25 to the furnace body 11. The supply amount of the primary gas is set to such an amount that the slow combustion of the waste W is maintained. The inside of the incinerator 10 is at a high temperature due to the slow combustion of the waste that was previously charged. Under such a condition, the newly introduced waste W undergoes the processes of drying, thermal decomposition, and combustion in order from the upstream side to the downstream side of the furnace body 11.

The unburned gas generated by the slow combustion is combusted in the downstream secondary combustion chamber 27 by the supply of secondary gas (for example, air). Further, the unburned components in the ash of the waste W discharged from the furnace body 11 are burned by the post-combustion stoker 28. So-called after-burning is performed.

Next, the incinerator structure 30A of the present embodiment will be described. FIG. 4 is a sectional view of the incinerator structure 30A. FIG. 5 is a partially enlarged view of the cross-sectional view shown in FIG. 6A is a VIA-VIA sectional view in FIG. 5, and FIG. 6B is a VIB-VIB sectional view in FIG. As shown in these drawings, the incinerator structure 30A includes the furnace body 11 described above, a support portion 31A, and a terminal portion 32A. The terminal portion 32A is, for example, a leaf spring receiving portion 34 described later.

As shown in FIG. 4, the support portion 31A is formed in an annular shape extending in the circumferential direction and is fixed to the outer peripheral surface 11c of the furnace body 11. For example, the support portion 31A is fixed to the outer peripheral surface 11c of the furnace body 11 by welding. The thickness of the support portion 31A along the axial direction and the height of the support portion 31A along the radial direction are appropriately set according to the material and operating environment of the furnace body 11, the size of the terminal portion 32A, and the like. To be done.

A plurality of supporting portions 31A may be provided depending on the size of the terminal portion 32A. In other words, the support portion 31A may be provided in plural for the group of the plurality of terminal portions 32A. In this case, the support portions 31A are arranged at a predetermined interval in the axial direction and support each terminal portion 32A. By providing a plurality of support portions 31A, it is possible to suppress the support portion 31A from becoming excessively thick and interfering with the thermal expansion of the furnace body 11.

The terminal portion 32A is fixed to the support portion 31A. A plurality of terminal portions 32A are provided along the circumferential direction of the furnace body 11 by engaging with the structure 33 that transmits force to and from the furnace body 11. Further, the terminal portion 32A has a shape corresponding to the form of engagement with the structure 33 and the shape and size of the structure 33.

Hereinafter, first and second examples of the terminal portion 32A and the structure 33 will be described.

(First example)
A first example of the structure 33 is a leaf spring 21 that connects the furnace body 11 and the annular member 20. A first example of the terminal portion 32A is a leaf spring receiving portion 34 that engages with the leaf spring 21.

As shown in FIG. 5, a plurality of leaf springs 21 are provided in the circumferential direction at a predetermined angular interval between the outer peripheral surface 11c of the furnace body 11 and the annular member 20. The leaf spring 21 has a spring body 35 that extends in the tangential direction of the furnace body 11 and can bend in the radial direction of the furnace body 11. Both ends of the spring body 35 are supported by mounting portions (brackets) 37 provided on the inner peripheral surface 20 a of the annular member 20. Further, the spring body 35 has a convex portion 36 having a rectangular cross section at the center thereof. The convex portion 36 has a predetermined length and protrudes radially inward from the spring body 35.

On the other hand, the leaf spring receiving portion 34 is fixed to the support portion 31A. For example, the leaf spring receiving portion 34 is fixed to the outer peripheral surface 11c of the support portion 31A. Further, the leaf spring receiving portion 34 is provided at a position that faces the leaf spring 21 in the supporting portion 31A in the radial direction. Specifically, the engagement hole 34 a of the leaf spring receiving portion 34 is opened in the radial direction so as to face the convex portion 36 of the leaf spring 21.

As shown in FIGS. 5 and 6A, the leaf spring receiving portion 34 extends in the circumferential direction and is fixed to the support portion 31A, and the plate-shaped main body 42 and the engagement hole 34a formed in the main body 42. Have. The engagement hole 34a has a cross-sectional shape (for example, a rectangle) according to the outer shape of the protrusion 36.

The length (width) of the engagement hole 34a in the tangential direction of the furnace body 11 is substantially equal to the length (width) of the convex portion 36 of the leaf spring 21 in the tangential direction. On the other hand, the length (depth) of the engagement hole 34a in the axial direction is smaller than the length (depth) of the convex portion 36 in the axial direction.

Further, at least the tip of the convex portion 36 of the leaf spring 21 is located inside the engagement hole 34 a of the leaf spring receiving portion 34. Therefore, due to the above-described width relationship, the convex portion 36 slides in the inner surface of the engagement hole 34a in the radial direction, while the movement in the circumferential direction with respect to the engagement hole 34a is restricted. That is, by the engagement of the convex portion 36 and the engagement hole 34a, the leaf spring 21 and the leaf spring receiving portion 34 are allowed to move in the radial direction, and the relative movement in the circumferential direction is restricted. To be done.

In this way, the plurality of leaf springs 21 are provided in the circumferential direction so as to surround the outer circumference of the furnace body 11, and allow the thermal expansion in the radial direction of the furnace body 11, while allowing the furnace body 11 to pass through the leaf spring receiving portion 34. Elastically supported from the radial direction.

As described above, the leaf spring 21 and the leaf spring receiving portion 34 are restricted from moving in the circumferential direction of each other. Therefore, when the annular member 20 tries to rotate in the circumferential direction, the furnace body 11 also rotates accordingly. The rotational force of the annular member 20 is transmitted from the leaf spring 21 to the leaf spring receiving portion 34 via the contact portions of the convex portion 36 and the engagement hole 34a with each other, and further via the support portion 31A. Be transmitted to. Due to the transmission of this force, stress is generated on the outer peripheral surface 11c of the furnace body 11. Further, since the leaf spring 21 located below the furnace body 11 supports the furnace body 11, stress due to these reaction forces is also generated on the outer peripheral surface 11c of the furnace body 11.

Any of the above-mentioned forces is transmitted from the leaf spring 21 to the outer peripheral surface 11c of the furnace body 11 via the leaf spring receiving portion 34. The transmission path of this force is localized at the position where the leaf spring 21 contacts. On the other hand, the leaf spring receiving portion 34 as the terminal portion 32A is a member formed separately from the furnace body 11, and its rigidity is higher than that of the furnace body 11. Therefore, when the rotational force or the reaction force is transmitted between the annular member 20 and the furnace body 11, stress concentration is likely to occur near the leaf spring 21 on the outer peripheral surface 11c of the furnace body 11. Such stress concentration becomes a factor that hinders the extension of the operating period of the furnace body 11.

However, in this example, the support portion 31A is interposed between the leaf spring receiving portion 34 and the outer peripheral surface 11c of the furnace body 11. Since the support portion 31A is formed in an annular shape extending in the circumferential direction and has a continuous integral structure, the force transmitted between the leaf spring receiving portion 34 and the furnace body 11 is dispersed. Therefore, stress concentration in the vicinity of the leaf spring receiving portion 34 is relieved. Therefore, the progress of deterioration such as metal fatigue in the outer peripheral surface 11c of the furnace body 11, that is, the water pipes 13 and the fins 14 is suppressed, and the operating period of the furnace body 11 can be extended.

(Second example)
The second example of the structural body 33 is the above-described mounting portion 37 provided on the annular member 20. A second example of the terminal portion 32A is a thrust receiving portion 38A that engages with the mounting portion 37.

As shown in FIGS. 5 and 6A, the mounting portions 37 project inward in the radial direction from the inner peripheral surface 20a of the annular member 20, and are arranged in the circumferential direction at predetermined angular intervals. Further, as shown in FIG. 6, the mounting portion 37 has a first flat surface 37a facing the inlet 11a side of the furnace main body 11 and a second flat surface 37b facing the outlet 11b side of the furnace main body 11.

The end portions of the two leaf springs 21 are connected (supported) to the mounting portion 37 by fastening members such as bolts. Specifically, one end of the two leaf springs 21 is connected to the first plane 37a side, and the other end of the two leaf springs 21 is connected to the second plane 37b side.

On the other hand, the thrust receiving portion 38A is fixed to the support portion 31A. For example, the thrust receiving portion 38A is fixed to the outer peripheral surface 11c of the support portion 31A. Further, the thrust receiving portion 38A is provided in the support portion 31A at a position that faces the mounting portion 37 in the radial direction.

As shown in FIG. 6A, the thrust receiving portion 38A has a base portion 39 fixed to the support portion 31A and a wall portion 40 projecting radially outward from the base portion 39. The thrust receiving portion 38A is provided on the inlet 11a side of the furnace body 11 and the outlet 11b side of the furnace body 11 with respect to the mounting portion 37.

Further, the thrust receiving portion 38A has a stopper bolt 41. The stopper bolt 41 is screwed into the wall portion 40 and is rotated to move in the axial direction. The stopper bolt 41 on the inlet 11a side contacts the first flat surface 37a of the mounting portion 37. Similarly, the stopper bolt 41 on the outlet 11b side contacts the second flat surface 37b of the mounting portion 37.

Due to these abutments, relative movement of the thrust receiving portion 38A and the mounting portion 37 in the axial direction is restricted. The pressing force of the stopper bolt 41 with respect to the mounting portion 37 is a value at which the relative movement of the thrust receiving portion 38A and the mounting portion 37 in the axial direction is restricted and the relative movement of the both in the radial direction is allowed. Is set to.

The annular member 20 and the furnace body 11 are integrally moved in the axial direction by the mutual engagement of the thrust receiving portion 38A and the supporting portion 31A. For example, when the furnace body 11 tries to expand in the axial direction due to thermal expansion of the furnace body 11, the force is transmitted to the annular member 20 via the thrust receiving portion 38A and the support portion 31A, and the annular member 20 also moves in the axial direction. Moving. As a result, the axial stress generated in the furnace body 11 is relieved.

However, when this stress is relaxed, stress concentration is likely to occur near the thrust receiving portion 38A on the outer peripheral surface of the furnace body 11. In this example, the support portion 31A is interposed between the thrust receiving portion 38A and the outer peripheral surface 11c of the furnace body 11. The support portion 31A is formed in an annular shape extending in the circumferential direction and has a continuous integral structure, so that the force transmitted between the thrust receiving portion 38A and the furnace body 11 is dispersed. Therefore, stress concentration in the vicinity of the thrust receiving portion 38A is relieved. Therefore, the progress of deterioration such as metal fatigue in the outer peripheral surface 11c of the furnace body 11, that is, the water pipes 13 and the fins 14 is suppressed, and the operating period of the furnace body 11 can be extended.

<Second Embodiment>
The incinerator structure 30B according to the second embodiment of the present disclosure will be described. The incinerator structure 30B according to the second embodiment includes a plurality of terminal portions 32B fixed to the outer peripheral surface 11c of the furnace body 11 and a plurality of terminal portions 32B instead of including the support portion 31A of the first embodiment. It is provided with a plurality of connection parts 43 which connect the terminal parts 32B and 32B adjacent to each other. Since other configurations are the same as those in the first embodiment, description thereof will be omitted.

FIG. 7 is a diagram showing the thrust receiving portion 38B as the terminal portion 32B and the connecting portion 43 according to the second embodiment. As shown in this figure, unlike the thrust receiving portion 38A of the first embodiment, the thrust receiving portion 38B of the second embodiment is directly fixed to the outer peripheral surface 11c of the furnace body 11.

Further, the connecting portion 43 has a rectangular cross-sectional shape similar to the supporting portion 31A of the first embodiment, and extends in the circumferential direction. The connecting portion 43 is located between the two thrust receiving portions 38B and 38B, and connects the both. This connecting means is, for example, welding. Like the thrust receiving portion 38B, the connecting portion 43 is also fixed to the outer peripheral surface 11c of the furnace body 11.

In the second embodiment, the plurality of terminal portions 32B and the plurality of connecting portions 43 form an annular support portion 31B extending in the circumferential direction of the furnace body 11. In the example shown in FIG. 7, the thrust receiving portion 38B and the connecting portion 43 form an annular support portion 31B. Similar to the first embodiment, the annular support portion 31B disperses the force transmitted between the thrust receiving portion 38B and the furnace body 11. Therefore, stress concentration generated near the thrust receiving portion 38B is relieved.

The leaf spring receiving portion 34 of the first embodiment can also be applied as the terminal portion 32B according to the second embodiment. That is, a plurality of leaf spring receiving portions 34 may be fixed to the outer peripheral surface 11c of the furnace body 11, and two adjacent leaf spring receiving portions 34 may be connected by a connecting portion having the same shape as the connecting portion 43. .. Also in this case, the stress concentration generated in the vicinity of the leaf spring receiving portion is alleviated.

<Other embodiments>
Instead of the leaf springs 21 shown in FIGS. 4 to 7, spokes 44 as the structures 33 may be used. FIG. 8 is an enlarged cross-sectional view of the incinerator structure 30C that employs the spokes 44.

The spokes 44 are rod-shaped members that extend in one direction. One end of the spoke 44 is swingably supported by a mounting portion (bracket) 45 provided on the inner peripheral surface 20a of the annular member 20. The other end of the spoke 44 is swingably supported by a mounting portion (bracket) 46 serving as the terminal portion 32A, which is fixed to the support portion 31A. As a result, the furnace body 11 and the annular member 20 are connected via the spokes 44. It should be noted that instead of the spokes 44, pins (not shown) may be used to connect both attachment parts.

Further, as in the second embodiment, the attachment portion 46 may be fixed to the outer peripheral surface 11c of the furnace body 11. FIG. 9 shows a modification 30D of the incinerator structure 30C shown in FIG. As shown in this figure, a connecting portion 47 having the same configuration as that of the second embodiment is provided between the two mounting portions 46, 46 adjacent to each other, and connects the two mounting portions 46, 46.

Even when the spokes 44 are adopted, the same annular support portion as in the first and second embodiments is formed on the outer peripheral surface 11c of the furnace body 11. Therefore, the force transmitted through the spokes 44 is dispersed by the annular support portion, and the stress concentration near the attachment portion 46 is relieved.

It should be noted that the present disclosure is not limited to the above-described embodiments, and is indicated by the description of the claims, and further includes meanings equivalent to the description of the claims and all modifications within the scope.

10... Incinerator, 11... Furnace body, 11a... Inlet, 11b... Outlet, 11c... Outer peripheral surface, 12... Cover casing, 13... Water pipe, 14... Fin, 15... Pore, 16... Inlet side header pipe, 17... Outlet Side header pipe, 18... Rotary joint, 19... Seal plate, 20... Annular member (tire), 20a... Inner peripheral surface, 21... Leaf spring, 22... Roller, 23... Drive device, 24... Hopper, 25... Wind box (Duct), 26... Sealing device, 27... Secondary combustion chamber, 28... Post-combustion stoker, 30A to 30D... Incinerator structure, 31A, 31B... Support part, 32A, 32B... Terminal part, 33... Structure, 34 ... leaf spring receiving portion, 34a... engaging hole, 35... spring body, 36... convex portion, 37, 45, 46... mounting portion (bracket), 37a... first flat surface, 37b... second flat surface, 38A... thrust receiving Part, 38B... Thrust receiving part, 39... Base part, 40... Wall part, 41... Stopper bolt, 42... Main body, 43, 47... Connecting part, 44... Spoke, W... Waste

Claims (4)

A furnace body formed in a tubular shape,
A support portion formed in an annular shape extending in the circumferential direction of the furnace body, and fixed to the outer peripheral surface of the furnace body,
An incinerator structure comprising: a plurality of terminals that are engaged with a structure that transmits force to and from the furnace body and that are provided along the circumferential direction of the furnace body and that are fixed to the support portion. A furnace body formed in a tubular shape,
A plurality of terminal portions that are engaged with a structure that transmits force between the furnace body and are provided along the circumferential direction of the furnace body and are fixed to the outer peripheral surface of the furnace body,
A plurality of connecting portions that are fixed to the outer peripheral surface of the furnace body and that connect mutually adjacent terminal portions of the plurality of terminal portions,
The incinerator structure in which the plurality of terminal portions and the plurality of connecting portions constitute an annular support portion extending in the circumferential direction of the furnace body. The incinerator structure according to claim 1 or 2, wherein the furnace body is made of metal. The incinerator structure according to claim 1, wherein a plurality of the support portions are provided for the group of the plurality of terminal portions.

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