Waste Incinerator

Abstract

To suppress the wear of a slide part provided in a space with a part adjacent to a rotary kiln furnace.SOLUTION: A waste incineration device comprises: a rotary kiln furnace; an inlet part provided adjacently to the inlet side of the rotary kiln furnace; an outlet part provided adjacently to the outlet side of the rotary kiln; an inlet side seal structure sealing a space between the rotary kiln furnace and the inlet part; and an outlet side seal structure sealing a space between the rotary kiln furnace and the outlet part. At least one of the inlet side seal structure and the outlet side seal structure comprises: a seal member supported by one of a rotation side and a stationary side; and a slide member supported by the other of the rotation side and the stationary side and having a slide face against which the seal member is pressed. At least one of the inlet side seal structure and the outlet side seal structure is composed in such a manner that, upon rotation of the rotary kiln furnace, when one of the seal member and the slide member is tilted with respect to the other, the other of the seal member and the slide member is tilted with respect to the one accordingly.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The technology disclosed in this specification relates to a waste incineration apparatus. [Background technology]

[0002] For example, Patent Document 1 discloses a waste incineration system equipped with a rotary kiln. An inlet section for feeding radioactive waste into the rotary kiln is connected to the inlet side of the rotary kiln, and an outlet section for receiving the residue burned in the rotary kiln is provided on the outlet side of the rotary kiln. The space between the rotary kiln and the inlet section and the space between the rotary kiln and the outlet section are each sealed by a sealing structure. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-156483 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the waste incineration apparatus of Patent Document 1, both ends of the rotary kiln are sealed from the inlet and outlet by a seal structure. Since the rotary kiln itself rotates to agitate and transport the materials to be treated, the seal structure is provided with a sliding part that slides as the rotary kiln rotates. For this reason, the rotary kiln has a problem that the sliding part of the seal structure wears out over time. This problem becomes more pronounced as the rotary kiln becomes larger.

[0005] This specification discloses a technique for suppressing wear of sliding parts provided between a rotary kiln furnace and an adjacent part. [Means for solving the problem]

[0006] The waste incineration apparatus disclosed in this specification includes a rotary kiln furnace that agitates and burns input waste, an inlet section arranged adjacent to the inlet side of the rotary kiln furnace and through which waste is input into the rotary kiln furnace, an outlet section arranged adjacent to the outlet side of the rotary kiln furnace and for receiving residues combusted in the rotary kiln furnace, an inlet-side seal structure arranged on the inlet side of the rotary kiln furnace and sealing between the rotary kiln furnace and the inlet section, and an outlet-side seal structure arranged on the outlet side of the rotary kiln furnace and sealing between the rotary kiln furnace and the outlet section. At least one of the inlet-side seal structure and the outlet-side seal structure includes a seal member supported on one of the rotating side and the fixed side, and a sliding member supported on the other of the rotating side and the fixed side and having a sliding surface against which the seal member is pressed. At least one of the inlet side seal structure and the outlet side seal structure is configured so that when the rotary kiln rotates and one of the seal member and the sliding member tilts relative to the other, the other of the seal member and the sliding member tilts relative to the one in response.

[0007] In a waste incineration system, the rotary kiln's rotation axis may be tilted relative to the inlet or outlet during rotation due to manufacturing tolerances of the rotary kiln or the installation accuracy of the rotary kiln relative to the inlet or outlet of the rotary kiln. When the rotary kiln's rotation axis rotates in an inclined state relative to the inlet or outlet, the seal members and sliding members (i.e., sliding members) may wear unevenly, and the amount of wear on the sliding members may exceed expectations. In particular, when the rotary kiln is large, even a slight tilt of the rotary kiln's rotation axis may cause uneven wear on the sliding members, and the amount of wear may exceed expectations. In the above-mentioned waste incineration system, even if one of the seal member and the sliding member tilts relative to the other during rotation of the rotary kiln, the other seal member and sliding member will tilt relative to the other accordingly. This prevents the seal member from sliding at an angle relative to the sliding member, even when the rotary kiln's rotation axis rotates in an inclined state. Therefore, wear of the sliding portion can be suppressed. [Brief description of the drawings]

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

[0009] The main features of the embodiments described below are listed below. Note that the technical elements described below are independent technical elements that exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing.

[0010] (Feature 1) In the waste incineration apparatus disclosed in this specification, at least one of the sealing member and the sliding member may be supported rotatably around at least one of the x-axis and y-axis that are orthogonal to each other and set within the plane of the sliding surface. With this configuration, at least one of the sealing member and the sliding member can be suitably tilted in accordance with the tilt of the rotation axis of the rotary kiln furnace.

[0011] (Feature 2) In the waste incinerator disclosed in this specification, at least one of the inlet-side seal structure and the outlet-side seal structure may include a rotating flange, a fixed flange arranged to face the rotating flange, a rotating-side support mechanism for supporting the rotating flange on the rotary kiln furnace, and a fixed-side support mechanism for supporting the fixed flange on the inlet or outlet. The seal member may be provided between the rotating flange and the fixed flange, seal the space between the rotating flange and the fixed flange, and slide on the sliding surface as the rotary kiln furnace rotates. According to such a configuration, the rotating flange and the rotating-side support mechanism are supported on the rotary kiln furnace and rotate together with the rotary kiln furnace. On the other hand, the fixed flange and the fixed-side support mechanism are fixed to the outlet or inlet. By disposing the seal member between the opposing rotating flange and fixed flange, it is possible to preferably realize a configuration that seals and slides between the rotating flange that rotates with the rotary kiln furnace and the fixed flange that is fixed to the outlet or inlet.

[0012] (Feature 3) In the waste incineration apparatus disclosed herein, the surface of the rotating flange facing the fixed flange and the surface of the rotating flange facing the fixed flange may be arranged perpendicular to the axial direction of the rotary kiln. The fixed-side support mechanism may immovably support the fixed flange at the inlet or outlet. The rotating-side support mechanism may include a fixed flange fixed to the outer circumferential surface of the rotary kiln, multiple expandable members that are axially expandable and contractible, with one end fixed to the fixed flange and the other end abutting the rotating flange to press the rotating flange toward the fixed flange, and a transmission member that transmits the rotation of the fixed flange to the rotating flange. The multiple expandable members may be arranged at intervals around the circumferential direction of the rotating flange. Each of the multiple expandable members may have a roller member at the other end that makes point or line contact with the rotating flange. With this configuration, the rotating flange is pressed toward the fixed flange by the multiple expandable members, thereby ensuring optimal sealing between the seal member and the sliding member. In addition, since the roller member makes point or line contact with the rotating flange, the rotating flange can be pressed toward the fixed flange without tilting even if the fixed flange tilts with the tilt of the rotation shaft of the rotary kiln furnace. This makes it possible to suppress changes in the angle of the rotating flange relative to the fixed flange. Note that even if the expandable member makes point or line contact with the rotating flange, the rotation of the fixed flange can be transmitted to the rotating flange by the transmission member.

[0013] (Feature 4) In the waste incinerator disclosed in this specification, the surface of the rotating flange on the fixed flange side and the surface of the fixed flange on the rotating flange side may be arranged perpendicular to the axial direction of the rotary kiln furnace. The rotating side support mechanism may include a first fixed flange fixed to the outer peripheral surface of the rotary kiln furnace and a transmission member that transmits the rotation of the first fixed flange to the rotating flange. The fixed side support mechanism may include a second fixed flange fixed to the inlet or outlet, and is configured to be axially telescopic. One end is fixed to the second fixed flange, and the other end abuts against the back surface of the surface of the rotating flange on the fixed flange side and presses the rotating flange toward the fixed flange. The fixed side support mechanism may include a plurality of telescopic members. The plurality of telescopic members may be arranged at intervals in the circumferential direction of the rotating flange. A roller member that makes point contact or line contact with the rotating flange may be arranged at each of the other ends of the plurality of telescopic members. Even with such a configuration, the plurality of telescopic members can seal between the seal member and the sliding member, and can suppress a change in the angle of the rotating flange with respect to the fixed flange. Also, according to such a configuration, a plurality of telescopic members can be provided in the fixed side support mechanism. Thereby, the members provided in the rotating side support mechanism that rotates together with the rotary kiln furnace can be reduced.

[0014] (Feature 5) In the waste incinerator disclosed in this specification, a guide roller may be attached to one of the rotating flange and the fixed flange. A guide portion guided by the guide roller may be provided on the other of the rotating flange and the fixed flange. When the rotating flange rotates with respect to the fixed flange, the guide portion may be guided by the guide roller and the rotating flange may rotate. According to such a configuration, by guiding the guide roller provided on one of the rotating flange and the fixed flange by the guide portion provided on the other, one of the rotating flange and the fixed flange can be supported by the other of the rotating flange and the fixed flange.

[0015] (Feature 6) In the waste incineration apparatus disclosed in this specification, the seal member may be divided into a plurality of seal member portions in the circumferential direction. The expansion member may be disposed at a position corresponding to each of the plurality of seal member portions. According to such a configuration, the seal member is divided into a plurality of seal member portions, and the weight of each individual seal member portion becomes smaller. For this reason, the replacement work can be performed for each seal member portion according to the amount of wear, and the replacement work can be easily performed.

[0016] (Feature 7) In the waste incineration apparatus disclosed in this specification, the sliding member may be a cylindrical member attached to the outer peripheral surface of the rotary kiln furnace. The sliding surface may be the outer peripheral surface of the cylindrical member. The seal member may be disposed along the outer peripheral surface of the cylindrical member and may be pressed against the outer peripheral surface of the cylindrical member. The seal member may be divided into a plurality of seal member portions in the circumferential direction. Both end portions in the circumferential direction of each of the plurality of seal member portions may be arranged to overlap in the circumferential direction with the end portions of the adjacent seal member portions. According to such a configuration, when the rotary kiln furnace rotates and tilts, and accordingly the sliding member tilts, the seal member tilts following the sliding member for each seal member portion. For this reason, it is possible to suppress the seal member from wearing.

Example

[0017] (Example 1) With reference to the drawings, the waste incineration apparatus 10 according to this example will be described. As shown in FIG. 1, the waste incineration apparatus 10 includes a rotary kiln furnace 12, an inlet portion 14 disposed on the inlet side (upstream) of the rotary kiln furnace 12, and an outlet portion 16 disposed on the outlet side (downstream) of the rotary kiln furnace 12. The rotary kiln furnace 12 is a rotary incineration apparatus that stirs and burns waste by rotating. The type of waste burned in the rotary kiln furnace 12 is not particularly limited, and it may be combustible or difficult-to-combust waste, or may be radioactive waste.

[0018] The inlet section 14 is disposed adjacent to the inlet side of the rotary kiln furnace 12, and the waste is introduced into the rotary kiln furnace 12. That is, the inlet section 14 has an inlet for introducing the waste at one end, and the other end opens into the internal space of the rotary kiln furnace 12. The waste introduced into one end of the inlet section 14 is introduced into the rotary kiln furnace 12 from the other end of the inlet section 14. The rotary kiln furnace 12 is supported rotatably on an equipment foundation (not shown), whereas the inlet section 14 is fixed to an equipment foundation (not shown). Therefore, the rotary kiln furnace 12 rotates around its axis relative to the fixed inlet section 14. The inlet section may simply have a function of guiding the introduced waste to the rotary kiln furnace 12, or may be configured to include, for example, a feeder for supplying a fixed amount of waste.

[0019] The outlet section 16 is disposed adjacent to the outlet side of the rotary kiln furnace 12, and receives the residue burned in the rotary kiln furnace 12, and the combustion gas discharged from the rotary kiln furnace 12 flows into the outlet section 16. In this embodiment, the outlet section 16 is a stoker furnace, and further incinerates the unburned residue in the rotary kiln furnace 12. That is, the outlet section 16 has a stoker (fire grate) at its lower end and an exhaust port at its upper end. The residue transported from the rotary kiln furnace 12 falls onto the stoker of the outlet section 16, and the unburned residue is burned. The combustion gas generated at the outlet section 16 and the combustion gas discharged from the rotary kiln furnace 12 are exhausted from the upper end of the outlet section 16. The combustion gas exhausted from the outlet section 16 is treated by an exhaust gas treatment facility (not shown). The outlet section 16 is fixed to an equipment foundation (not shown) in the same manner as the inlet section 14. Therefore, the rotary kiln 12 rotates around its axis relative to the fixed outlet 16. The outlet is not limited to the above-described configuration, and may be configured to receive the residues combusted in the rotary kiln 12, and the configuration is not particularly limited.

[0020] An inlet-side seal structure 15 is provided between the rotary kiln furnace 12 and the inlet section 14, and an outlet-side seal structure 17 is provided between the rotary kiln furnace 12 and the outlet section 16. The inlet-side seal structure 15 and the outlet-side seal structure 17 have the same configuration. Therefore, hereinafter, the outlet-side seal structure 17 will be described in detail. In this embodiment, the inlet-side seal structure 15 and the outlet-side seal structure 17 have the same configuration, but are not limited to such a configuration. Further, the configuration described below may be applied to only one of the inlet-side seal structure 15 and the outlet-side seal structure 17. For example, by adopting a structure that absorbs the inclination in the axial direction of the rotary kiln furnace 12 on one of the inlet-side seal structure 15 and the outlet-side seal structure 17, the seal structure disclosed in this embodiment may be adopted only for the other of the inlet-side seal structure 15 and the outlet-side seal structure 17.

[0021] As shown in FIG. 2, the outlet-side seal structure 17 includes a seal member 20, a sliding member 22, a rotating-side flange 24, a fixed-side flange 26, a rotating-side support mechanism 30, and a fixed-side support mechanism 42. Note that FIG. 2 is a side view showing the configuration of the outlet-side seal structure 17 in a portion where a compression spring 34, a roller member 36, and a transmission roller 40, which will be described later, are provided.

[0022] The seal member 20 is a cylindrical member disposed outside the outer circumference of the rotary kiln furnace 12. In this embodiment, the seal member 20 is formed as a circumferentially continuous cylindrical member by joining a plurality of parts formed by dividing in the circumferential direction. Note that the seal member 20 may be integrally formed. The seal member 20 is disposed to face the sliding member 22, and the surface facing the sliding member 22 is substantially flat. The seal member 20 seals between the sliding member 22 and the rotating-side flange 24. The seal member 20 is capable of sealing with the sliding member 22 and is configured to be slidable on the sliding surface of the sliding member 22. In this embodiment, the seal member 20 is formed using a material in which a solid lubricant is embedded in cast iron, but its material is not particularly limited.

[0023] The sliding member 22 is a cylindrical member disposed outside the outer periphery of the rotary kiln furnace 12. The sliding member 22 is disposed opposite to the seal member 20, and the surface facing the seal member 20 is substantially flat. In the present embodiment, the sliding member 22 is formed by joining a plurality of parts formed by dividing in the circumferential direction, and is formed as an annular member continuous in the circumferential direction. Note that the sliding member 22 may be integrally formed. The surface of the sliding member 22 facing the seal member 20 is in contact with the seal member 20 and serves as a sliding surface on which the seal member 20 slides. In the present embodiment, the sliding member 22 is formed of a carbon steel material, but its material is not particularly limited.

[0024] The rotating side flange 24 is an annular flange disposed outside the outer periphery of the rotary kiln furnace 12. The rotating side flange 24 is in the shape of a ring-shaped plate, and its axis is disposed coaxially with the axis of the rotary kiln furnace 12 and is disposed so as to be orthogonal to the axial direction of the rotary kiln furnace 12. The rotating side flange 24 is disposed opposite to the fixed side flange 26, and the seal member 20 is fixed to the surface of the rotating side flange 24 facing the fixed side flange 26. The rotating side flange 24 is supported by the rotating side support mechanism 30.

[0025] The fixed-side flange 26 is an annular flange disposed outside the outer periphery of the rotary kiln furnace 12. The fixed-side flange 26 is in the shape of a ring plate, is arranged coaxially with the axis of the rotary kiln furnace 12, and is arranged so as to be orthogonal to the axial direction of the rotary kiln furnace 12. That is, the rotating-side flange 24 and the fixed-side flange 26 are arranged such that their axes are on the same axis and their opposing surfaces are substantially parallel. The fixed-side flange 26 is disposed opposite to the rotating-side flange 24, and a sliding member 22 is fixed to the surface of the fixed-side flange 26 that faces the rotating-side flange 24. That is, there is a gap between the rotating-side flange 24 and the fixed-side flange 26, and the seal member 20 and the sliding member 22 are disposed between the rotating-side flange 24 and the fixed-side flange 26. The fixed-side flange 26 is supported by a fixed-side support mechanism 42. The fixed-side support mechanism 42 is a connecting member fixed to the connecting portion 16a of the outlet portion 16. The fixed-side flange 26 is fixed (supported immovably) to the fixed-side support mechanism 42, and the fixed-side support mechanism 42 is fixed to the outlet portion 16. Therefore, the sliding member 22 is fixed to the outlet portion 16 via the fixed-side support mechanism 42 and the fixed-side flange 26. For this reason, the fixed-side support mechanism 42, the fixed-side flange 26, and the sliding member 22 are supported immovably to the outlet portion 16 even when the rotary kiln furnace 12 rotates.

[0026] The configuration of the rotating-side support mechanism 30 will be described. The rotating-side support mechanism 30 supports the rotating-side flange 24 on the rotary kiln furnace 12. The rotating-side support mechanism 30 includes a flange 32, a compression spring 34, a roller member 36, a telescopic joint 38, and a transmission roller 40.

[0027] The flange 32 is an annular flange fixed to the outer peripheral surface of the rotary kiln furnace 12. The flange 32 rotates as the rotary kiln furnace 12 rotates. The flange 32 has a support surface 32a that supports one end of the compression spring 34, one end of the telescopic joint 38, and one end of the transmission roller 40. The support surface 32a is substantially flat and is arranged so as to be orthogonal to the axial direction of the rotary kiln furnace 12. The support surface 32a is arranged substantially parallel to the rotating-side flange 24 and the fixed-side flange 26.

[0028] One end of the compression spring 34 is fixed to the support surface 32a, and the other end is connected to the roller member 36 via a rod. The roller member 36 is attached to the tip of the rod biased by the compression spring 34, and its tip abuts against the rotation-side flange 24. The compression spring 34 presses the rotation-side flange 24 toward the fixed-side flange 26 via the roller member 36. In other words, the compression spring 34 presses the rotation-side flange 24 toward the axial direction of the rotary kiln 12. The tip of the roller member 36 is ball-shaped and is supported rotatably in any direction relative to the main body of the roller member 36. Therefore, the tip of the roller member 36 comes into point contact with the rotation-side flange 24.

[0029] FIG. 3 is a view of the rotation-side flange 24 as viewed along the axial direction of the rotary kiln furnace 12. For ease of explanation, FIG. 3 illustrates only the rotation-side flange 24, the roller members 36, and the transmission rollers 40, and omits the other components. As shown in FIG. 3 , a plurality of roller members 36 (and the compression springs 34 connected thereto) are arranged at intervals in the circumferential direction of the rotation-side flange 24. In this embodiment, 24 compression springs 34 and 24 roller members 36 are arranged at equal intervals in the circumferential direction. By arranging the plurality of compression springs 34 and roller members 36, the entire circumference of the rotation-side flange 24 can be pressed against the fixed-side flange 26. That is, the seal member 20 fixed to the rotation-side flange 24 is pressed against the sliding member 22 fixed to the fixed-side flange 26. This seals the gap between the seal member 20 and the sliding member 22. In this embodiment, 24 compression springs 34 and 24 roller members 36 are arranged, but the present invention is not limited to this configuration. As long as the gap between the seal member 20 and the sliding member 22 can be sealed, the number of compression springs 34 and roller members 36 may be more than twenty-four or less than twenty-four.

[0030] As shown in FIG. 2, since the compression spring 34 presses the rotating flange 24 in the axial direction of the rotary kiln furnace 12, when the rotary kiln furnace 12 rotates without tilting in its axial direction, the rotating flange 24 maintains a state orthogonal to the axial direction of the rotary kiln furnace 12. On the other hand, when the rotary kiln furnace 12 rotates while tilting in its axial direction, the support surface 32a of the flange 32 also tilts, and accordingly, the axis of the compression spring 34 also tilts. For this reason, the axes of the compression spring 34 and the roller member 36 deviate from the angle orthogonal to the rotating flange 24. However, since the other end of the roller member 36 is in point contact with the rotating flange 24, even if the axes of the compression spring 34 and the roller member 36 tilt, the rotating flange 24 tilts with respect to the roller member 36, so that the rotating flange 24 is suppressed from tilting with respect to the fixed flange 26. Since the rotating flange 24 is suppressed from tilting with respect to the fixed flange 26, the seal member 20 is also suppressed from tilting with respect to the sliding member 22. In other words, the seal member 20 can rotate around each of two orthogonal axes (an axis parallel to the x-axis in FIG. 2 and an axis parallel to the y-axis) set in the plane with respect to the sliding surface. Even if the rotary kiln furnace 12 rotates while tilting in its axial direction, since the seal member 20 can maintain a state substantially parallel to the sliding member 22, the seal member 20 can be made difficult to wear.

[0031] In addition, in this embodiment, the roller member 36 is configured such that the other end is ball-shaped and in point contact with the rotating flange 24, but it is not limited to such a configuration. For example, when the direction in which the axis of the rotary kiln furnace 12 tilts is in one direction, the tip of the roller member may be formed in a ring shape that can rotate in one direction, and the tip of the roller member and the rotating flange 24 may be configured to be in line contact.

[0032] The expansion joint 38 is disposed between the flange 32 and the rotating flange 24. The expansion joint 38 is disposed closer to the rotary kiln furnace 12 than the compression spring 34 and the roller member 36, and covers the outer circumference of the rotary kiln furnace 12 in the circumferential direction at the portion between the flange 32 and the rotating flange 24. The expansion joint 38 is formed of a material that does not allow the gas inside the rotary kiln furnace 12 to pass through. In this embodiment, a non-metallic glass cloth is used, but the material of the expansion joint 38 is not particularly limited. The expansion joint 38 may be formed of a non-metallic material other than the glass cloth, or may be formed of a metallic material. By installing the expansion joint 38, the gas inside the rotary kiln furnace 12 is prevented from flowing out to the outside from between the flange 32 and the rotating flange 24.

[0033] One end of the transmission roller 40 is fixed to the support surface 32a of the flange 32, and the other end is loosely fitted in the through hole of the rotating flange 24. The transmission roller 40 is disposed closer to the rotary kiln furnace 12 than the expansion joint 38. Since the transmission roller 40 is fixed to the flange 32 and loosely fitted in the through hole of the rotating flange 24, the rotation of the rotary kiln furnace 12 is transmitted to the rotating flange 24. That is, when the rotary kiln furnace 12 rotates, the flange 32 fixed to the outer peripheral surface of the rotary kiln furnace 12 also rotates around the axis of the rotary kiln furnace 12, and further, the transmission roller 40 fixed to the flange 32 also rotates around the axis of the rotary kiln furnace 12, and further, the rotating flange 24 loosely fitted to the transmission roller 40 also rotates around the axis of the rotary kiln furnace 12. Since the transmission roller 40 is loosely fitted in the through hole of the rotating flange 24, the rotating flange 24 can be inclined with respect to the flange 32. As shown in FIG. 3, in this embodiment, four transmission rollers 40 are arranged at equal intervals in the circumferential direction with respect to the rotating flange 24. The number of the transmission rollers 40 may be more than four or less than four.

[0034] As shown in Figs. 4 and 5, the outlet side seal structure 17 further includes a guide roller 50 and a guide portion 52. Fig. 4 is a view of the fixed side flange 26 viewed along the axial direction of the rotary kiln furnace 12. In Fig. 4, only the fixed side flange 26 and the guide roller 50 are illustrated, and other members are omitted from the illustration, in order to facilitate the explanation. Fig. 5 is a side view showing the configuration of the fixed side flange 26 in the portion where the guide roller 50 is provided, and the rotating side flange 24 in the portion where the compression spring 34 and the like are not provided. The fixed side flange 26 includes two protruding portions 26a that protrude downward from the rotary kiln furnace 12. The protruding portions 26a are provided at positions that are symmetrical when the fixed side flange 26 is viewed along the axial direction of the rotary kiln furnace 12. The guide roller 50 is attached to the surface of the two protruding portions 26a that faces the rotating side flange 24. The guide roller 50 is mounted rotatably with its axial direction perpendicular to the surface of the fixed flange 26 facing the rotating flange 24 (i.e., parallel to the axis of the rotary kiln furnace 12). The guide portion 52 is provided around the entire outer periphery of the rotating flange 24. The guide portion 52 abuts against the guide roller 50 and is guided by the guide roller 50. When the rotary kiln furnace 12 rotates, the rotating flange 24 rotates via the flange 32. The guide portion 52 of the rotating flange 24 is then guided by the guide roller 50. In this embodiment, the rotating flange 24 is an annular flange and is integrally formed. Therefore, the weight of the rotating flange 24 is relatively large. The rotating flange 24 is supported by the transmission roller 40 of the rotating support mechanism 30, and the guide portion 52 is guided (rotatably supported) by the guide roller 50, thereby maintaining the rotating flange 24 in a desired position.

[0035] Example 2 In the above-described Example 1, the plurality of compression springs 34 and the roller members 36 were provided in the rotation-side support mechanism 30, but the configuration is not limited to this. For example, as shown in FIG. 6, the compression spring 134 and the roller member 136 may be provided in the fixed-side support mechanism 142. In this embodiment, the configuration for fixing the compression spring 134 and the roller member 136 is different from the configuration for fixing the compression spring 34 and the roller member 36 in Example 1, and the other configurations are substantially the same. Therefore, the description of the same configuration as that of the waste incinerator 10 in Example 1 is omitted.

[0036] As shown in FIG. 6, the rotation-side support mechanism 130 includes a flange 32, a telescopic joint 38, and a transmission roller 40 (not shown). Note that FIG. 6 is a side view showing the configuration of the outlet-side seal structure in the portion where the compression spring 34 and the roller member 36 are provided. In FIG. 6, since the portion where the transmission roller 40 is not installed is illustrated, the transmission roller 40 is not shown. The rotation-side support mechanism 130 is different from the rotation-side support mechanism 30 in Example 1 in that it does not include a compression spring and a roller member. Since the flange 32, the telescopic joint 38, and the transmission roller 40 have the same configuration as in Example 1, detailed description thereof is omitted.

[0037] The fixed-side support mechanism 142 includes a support portion 44, a mounting member 45, a compression spring 134, a connection portion 135, and a roller member 136. The support portion 44 is disposed between the connection portion 16a of the outlet portion 16 and the fixed-side flange 126. The support portion 44 is fixed to the connection portion 16a and also fixed to the fixed-side flange 126. The support portion 44 is provided at a plurality of locations at intervals in the circumferential direction of the fixed-side flange 126. The fixed-side flange 126 is fixed to the outlet portion 16 via the support portion 44 and the connection portion 16a. The mounting member 45 is fixed to the outer peripheral surface (the end portion away from the rotary kiln furnace 12) of the fixed-side flange 126. The mounting member 45 includes a first portion 45a extending in a direction away from the rotary kiln furnace 12 and a second portion 45b bent from the first portion 45a and extending toward the rotation-side flange 124. The first portion 45a and the second portion 45b are integrally formed.

[0038] The compression spring 134 is fixed to the first part 45a. The compression spring 134 is connected to the roller member 136 via the connecting part 135. The connecting part 135 includes a rod 135a biased toward the fixed flange 126 by the compression spring 134, and a tip part 135b attached to the tip of the rod 135a. The roller member 136 is fixed to the tip part 135b. One end of the roller member 136 is fixed to the tip part 135b, and the other end is in contact with the surface of the rotary side flange 124 opposite to the surface facing the fixed flange 126. The rod 135a of the connecting part 135 is inserted through a through hole provided in the mounting member 45 (specifically, the first part 45a), and is supported so as to be movable with respect to the mounting member 45 (movable in the axial direction of the rotary kiln furnace 12). The compression spring 134 and the mounting member 45 are fixed to the fixed flange 126, and due to the biasing force of the compression spring 134, the connecting part 135 and the roller member 136 are integrally movable with respect to the fixed flange 126. That is, the compression spring 134 presses the rotary side flange 124 toward the fixed flange 126 via the connecting part 135 and the roller member 136. A plurality of the compression spring 134, the connecting part 135, and the roller member 136 are arranged at intervals in the circumferential direction with respect to the rotary side flange 24.

[0039] Also in this embodiment, by arranging a plurality of compression springs 134 and roller members 136, the rotating flange 24 is pressed against the fixed flange 26. Therefore, the space between the seal member 20 and the sliding member 22 can be sealed. Further, since the other end of the roller member 136 is in point contact with the rotating flange 124, even if the axis of the rotary kiln furnace 12 is inclined, the rotating flange 24 can be inclined with respect to the roller member 136 accordingly. Therefore, it is possible to suppress the seal member 20 from tilting with respect to the sliding member 22. Furthermore, in this embodiment, since the plurality of compression springs 134 and roller members 136 are provided in the fixed-side support mechanism 142, the constituent members of the rotating-side support mechanism 130 can be reduced. The rotating-side support mechanism 130 rotates as the rotary kiln furnace 12 rotates, while the fixed-side support mechanism 142 is fixed to the outlet portion 16 and does not move. By providing the plurality of compression springs 134 and roller members 136 in the fixed-side support mechanism 142, the number of members that rotate together with the rotary kiln furnace 12 can be reduced.

[0040] (Example 3) In the above-described Examples 1 and 2, the seal member 20 is integrally formed, but the configuration is not limited to this. For example, as shown in FIG. 7, the seal member 220 may be divided in the circumferential direction. In this embodiment, the seal member 220 is different from the seal member 20 of Example 1, and the other configurations are substantially the same as those of Example 1. Therefore, the description of the same configurations as those of the waste incinerator 10 of Example 1 will be omitted.

[0041] As shown in FIG. 7, the seal member 220 includes a plurality of seal member portions 221. The plurality of seal member portions 221 are arranged adjacent to each other in the circumferential direction. Although not shown in the figure, the entire seal member 220 is annular due to the plurality of seal member portions 221. In this embodiment, the seal member 220 is composed of 12 seal member portions 221. As described above, 24 pressing springs 34 and roller members 36 are arranged. Therefore, each seal member portion 221 is pressed by two pressing springs 34. That is, the pressing springs 34 are arranged in the vicinity of both ends of each seal member portion 221. Note that the number of seal member portions 221 constituting the seal member 220 is not particularly limited. As long as each seal member portion 221 is pressed by one or more pressing springs 34, it may be divided into more than 12 parts or less than 12 parts.

[0042] A glass cloth 46 is disposed between adjacent seal member portions 221. Since the seal member 220 is not integrally formed, a gap is generated between adjacent seal member portions 221. By disposing the glass cloth 46 between adjacent seal member portions 221, it is possible to suppress the gas in the rotary kiln furnace 12 from flowing out to the outside through the gap between the seal member portions 221.

[0043] In this embodiment, since the seal member 220 is divided into a plurality of seal member portions 221, the weight of each seal member portion 221 is reduced. Therefore, the installation of the seal member 220 (that is, each seal member portion 221) can be facilitated. Further, since each seal member portion 221 can be replaced, maintenance and replacement can be facilitated.

[0044] (Example 4) In the above Examples 1 to 3, the sealing member was pressed parallel to the axial direction of the rotary kiln furnace 12 to seal between the rotating flange and the fixed flange, but it is not limited to such a configuration. For example, as shown in FIG. 8, the sealing member 320 may be pressed toward the outer peripheral surface of the rotary kiln furnace 12 to seal between the rotary kiln furnace 12 and the outlet portion 16.

[0045] As shown in FIGS. 8 and 9, the outlet side seal structure 317 includes a sealing member 320, a sliding member 322, a compression spring 334, and a fixed side support mechanism 342.

[0046] The sliding member 322 is a cylindrical member fixed to the outer peripheral surface of the rotary kiln furnace 12. In this embodiment, the sliding member 322 is formed of stainless steel, but its material is not particularly limited. Since the sliding member 322 is fixed to the rotary kiln furnace 12, when the rotary kiln furnace 12 rotates, the sliding member 322 rotates accordingly.

[0047] The sealing member 320 is a cylindrical member disposed along the outer peripheral surface of the sliding member 322. In this embodiment, the sealing member 320 is formed of carbon, but its material is not particularly limited. As shown in FIG. 10, the sealing member 320 is composed of a plurality of sealing member portions 321 divided in the circumferential direction. The plurality of sealing member portions 321 are arranged adjacent to each other in the circumferential direction. The sealing member portion 321 has a reduced plate thickness at both ends in the circumferential direction, and each overlaps with the end portions of the adjacent sealing member portions 321 in the circumferential direction.

[0048] 8 and 9, one end of the compression spring 334 is fixed to the fixed-side support mechanism 342, and the other end abuts against the outer circumferential surface of the seal member 320. The axis of the compression spring 334 is substantially aligned with the radial direction of the rotary kiln furnace 12. The compression spring 334 presses the seal member 320 toward the outer circumferential surface of the rotary kiln furnace 12. This presses the seal member 320 against the sliding member 322, thereby sealing the gap between the seal member 320 and the sliding member 322. A plurality of compression springs 334 are arranged at intervals in the circumferential direction of the seal member 320.

[0049] The fixed-side support mechanism 342 includes a fixed-side flange 344. The fixed-side flange 344 is fixed to the connection portion 16a of the outlet portion 16. One end of the compression spring 334 is fixed to the fixed-side flange 344, and the surface of the seal member 320 on the connection portion 16a side abuts against the fixed-side flange 344.

[0050] In this embodiment, the seal member 320 is pressed against the sliding member 322 by arranging a plurality of compression springs 334. In addition, the side surface of the seal member 320 abuts against the fixed flange 344. Therefore, it is possible to seal between the outer peripheral surface of the rotary kiln furnace 12 and the fixed flange 344. Furthermore, when the axis of the rotary kiln furnace 12 tilts, the sliding member 322 that rotates together with the rotary kiln furnace 12 also tilts. In this embodiment, the seal member 320 arranged along the outer peripheral surface of the rotary kiln furnace 12 is composed of a plurality of seal member parts 321 divided in the circumferential direction, so that when the sliding member 322 tilts, each of the seal member parts 321 can be displaced following the sliding member 322. Therefore, wear of the seal member 320 can be suppressed.

[0051] Points regarding the waste incinerator 10 described in the embodiments will be described. The flanges 32 in Embodiments 1 and 2 are an example of a "fixed flange", and the compression spring 34, roller member 36 in Embodiment 1, and the compression spring 134, connection part 135, and roller member 136 in Embodiment 2 are an example of a "telescopic member", the transmission rollers 40 in Embodiments 1 and 2 are an example of a "transmission member", and the support part 44 and attachment member 45 in Embodiment 2 are an example of a "second fixed flange".

[0052] As described above, specific examples of the technology disclosed in this specification have been described in detail, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples exemplified above. In addition, the technical elements described in this specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing.

Explanation of Reference Numerals

[0053] 10: Waste incinerator 12: Rotary kiln furnace 14: Inlet part 15: Inlet side seal structure 16: Outlet part 17, 317: Outlet side seal structure 20, 220, 320: Seal member 221, 321: Seal member part 22, 322: Sliding member 24, 124: Rotating side flange 26, 126: Fixed side flange 30, 130, 330: Rotating side support mechanism 32: Flange 34, 134, 334: Compression spring 36, 136: Roller member 38: Expansion joint 40: Transmission roller 42, 142, 342: Fixed side support mechanism 44: Flange 46: Glass cloth 50: Guide roller Internal case

Claims

1. A rotary kiln furnace that stirs and burns the input waste, An inlet section disposed adjacent to the inlet side of the rotary kiln furnace for introducing waste into the rotary kiln furnace, An outlet section disposed adjacent to the outlet side of the rotary kiln furnace for receiving the residue burned in the rotary kiln furnace, An inlet side seal structure disposed on the inlet side of the rotary kiln furnace for sealing between the rotary kiln furnace and the inlet section, An outlet side seal structure disposed on the outlet side of the rotary kiln furnace for sealing between the rotary kiln furnace and the outlet section, At least one of the inlet side seal structure and the outlet side seal structure A seal member supported on one of the rotating side and the fixed side, A sliding member supported on the other of the rotating side and the fixed side and having a sliding surface against which the seal member is pressed, At least one of the inlet side seal structure and the outlet side seal structure is configured such that when the rotary kiln furnace rotates, if one of the seal member and the sliding member inclines with respect to the other, the other of the seal member and the sliding member inclines with respect to the one following it, At least one of the inlet side seal structure and the outlet side seal structure A rotating side flange, A fixed side flange disposed opposite to the rotating side flange, A rotating side support mechanism for supporting the rotating side flange on the rotary kiln furnace, A fixed side support mechanism for supporting the fixed side flange on the inlet section or the outlet section, is provided with, The seal member is provided between the rotating side flange and the fixed side flange, seals between the rotating side flange and the fixed side flange, and slides on the sliding surface as the rotary kiln furnace rotates, The surface of the rotating side flange on the fixed side flange side and the surface of the fixed side flange on the rotating side flange side are arranged perpendicular to the axial direction of the rotary kiln furnace, The fixed side support mechanism supports the fixed side flange on the inlet section or the outlet section immovably, The rotating side support mechanism A fixed flange fixed to the outer peripheral surface of the rotary kiln furnace, Axially expandable and contractible, one end is fixed to the fixed flange, while the other end abuts against the rotating side flange and presses the rotating side flange toward the fixed side flange, a plurality of expansion and contraction members, A transmission member that transmits the rotation of the fixed flange to the rotating flange, The plurality of telescopic members are arranged at intervals in the circumferential direction of the rotating flange, A waste incinerator, wherein roller members that are in point contact or line contact with the rotating flange are arranged at respective other ends of the plurality of telescopic members.

2. A rotary kiln furnace that stirs and burns the input waste, An inlet section that is arranged adjacent to the inlet side of the rotary kiln furnace and inputs waste into the rotary kiln furnace, An outlet section that is arranged adjacent to the outlet side of the rotary kiln furnace and receives the residue burned in the rotary kiln furnace, An inlet side seal structure that is arranged on the inlet side of the rotary kiln furnace and seals between the rotary kiln furnace and the inlet section, An outlet side seal structure that is arranged on the outlet side of the rotary kiln furnace and seals between the rotary kiln furnace and the outlet section, At least one of the inlet side seal structure and the outlet side seal structure, A seal member supported on one of the rotating side and the fixed side, A sliding member supported on the other of the rotating side and the fixed side and having a sliding surface against which the seal member is pressed, At least one of the inlet side seal structure and the outlet side seal structure is configured such that when the rotary kiln furnace rotates and one of the seal member and the sliding member inclines with respect to the other, the other of the seal member and the sliding member inclines with respect to the one following it, At least one of the inlet side seal structure and the outlet side seal structure, A rotating flange, A fixed flange arranged to face the rotating flange, A rotating side support mechanism that supports the rotating flange on the rotary kiln furnace, A fixed side support mechanism that supports the fixed flange on the inlet section or the outlet section, is provided with, The seal member is provided between the rotating flange and the fixed flange, seals between the rotating flange and the fixed flange, and slides on the sliding surface as the rotary kiln furnace rotates, The surface of the rotating flange on the fixed flange side and the surface of the fixed flange on the rotating flange side are arranged so as to be orthogonal to the axial direction of the rotary kiln furnace, The rotating side support mechanism, A first fixed flange fixed to the outer peripheral surface of the rotary kiln furnace, A transmission member for transmitting the rotation of the first fixed flange to the rotating flange, and the fixed-side support mechanism is a second fixed flange fixed to the inlet portion or the outlet portion, and is axially expandable and contractible, one end of which is fixed to the second fixed flange, and the other end abuts against the back surface of the surface of the rotating flange on the fixed flange side, and presses the rotating flange toward the fixed flange. A plurality of telescopic members, and the plurality of telescopic members are arranged at intervals in the circumferential direction of the rotating flange, and rollers that are in point contact or line contact with the rotating flange are arranged at the respective other ends of the plurality of telescopic members. A waste incinerator.

3. At least one of the seal member and the sliding member is rotatably supported around at least one of the orthogonal x-axis and y-axis set in the plane of the sliding surface. The waste incinerator according to claim 1 or 2.

4. A guide roller is attached to one of the rotating flange and the fixed flange, and a guide portion guided by the guide roller is provided on the other of the rotating flange and the fixed flange, and when the rotating flange rotates with respect to the fixed flange, the guide portion is guided by the guide roller and the rotating flange rotates. The waste incinerator according to any one of claims 1 to 3.

5. The seal member is divided into a plurality of seal member portions in the circumferential direction, and the telescopic members are arranged at positions corresponding to the respective seal member portions. The waste incinerator according to any one of claims 1 to 4.

6. A rotary kiln furnace for stirring and burning the input waste, and an inlet portion disposed adjacent to the inlet side of the rotary kiln furnace for introducing waste into the rotary kiln furnace, and an outlet portion disposed adjacent to the outlet side of the rotary kiln furnace for receiving the residue burned in the rotary kiln furnace, and an inlet side seal structure disposed on the inlet side of the rotary kiln furnace for sealing between the rotary kiln furnace and the inlet portion, and an outlet side seal structure disposed on the outlet side of the rotary kiln furnace for sealing between the rotary kiln furnace and the outlet portion, and at least one of the inlet side seal structure and the outlet side seal structure is a seal member supported on one of the rotating side and the fixed side, and A sliding member supported on the other of the rotating side and the fixed side and having a sliding surface against which the seal member is pressed. At least one of the inlet-side seal structure and the outlet-side seal structure is configured such that when the rotary kiln furnace rotates, if one of the seal member and the sliding member inclines with respect to the other, the other of the seal member and the sliding member inclines with respect to the one following it. The sliding member is a cylindrical member attached to the outer peripheral surface of the rotary kiln furnace. The sliding surface is the outer peripheral surface of the cylindrical member. The seal member is arranged along the outer peripheral surface of the cylindrical member and is pressed against the outer peripheral surface of the cylindrical member. The seal member is cylindrical. The seal member is divided into a plurality of seal member portions in the circumferential direction. The seal member portion is arc-shaped. Both ends in the circumferential direction of each of the plurality of seal member portions are arranged to overlap with the ends of the adjacent seal member portions in the circumferential direction. Both ends in the circumferential direction of each of the plurality of seal member portions and the ends of the adjacent seal member portions overlap over the entire area from the outer peripheral surface to the inner peripheral surface of the seal member. A pressing member that presses the seal member toward the outer peripheral surface of the cylindrical member. A contact member that is connected to the outer peripheral surface side of the pressing member and is arranged along the outer peripheral surface between the outer peripheral surface and the pressing member. The contact member is connected to a plurality of pressing members and extends in the circumferential direction. A waste incineration device.

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