Ash conveying device

Abstract

The present invention provides an ash conveying device that can collect fallen ash while minimizing the load on the conveying body that transports the ash. [Solution] The ash conveying device comprises a conveyor body, a drive unit, a pair of moving parts, a link unit, a bottom part, and a scraper. The conveyor body is arranged in a loop. The drive unit generates power to move the conveyor body in a loop. The pair of moving parts are located at both ends of the conveyor body in the width direction and move together with the conveyor body. The link unit connects the pair of moving parts and moves together with the conveyor body. The bottom part is located below the conveyor body and is where ash accumulates. The scraper is attached to the link unit and scrapes and collects the ash accumulated at the bottom part as it passes over the bottom part.

Description

Technical Field

[0001] This application mainly relates to an ash conveying device for conveying ash generated in combustion equipment.

Background Art

[0002] Patent Document 1 discloses a device for conveying ash using a belt conveyor. This device has a self-cleaning function for treating the ash that has fallen from the belt conveyor. Specifically, a scraper is attached to the belt of the belt conveyor via a hinge. The scraper moves along the bottom wall where the fallen ash accumulates, scoops up the ash, and collects it. The collected ash is conveyed again by the belt conveyor towards the destination.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In Patent Document 1, since the scraper is attached to the belt, the load applied when scooping up the ash is transmitted to the belt, imposing a burden on the belt. As a result, the lifespan of the belt may be reduced. That is, in the self-cleaning function of Patent Document 1, the load applied to the conveyor for conveying ash is large, and there is room for improvement.

[0005] This application has been made in view of the above circumstances, and its main object is to provide an ash conveying device that can collect the fallen ash while suppressing the load applied to the conveyor for conveying ash.

Means for Solving the Problems

[0006] The problem that this application aims to solve is as described above, and next, the means for solving this problem and their effects will be explained.

[0007] From the perspective of this application, an ash conveying device having the following configuration is provided. That is, the ash conveying device conveys ash generated in a combustion facility. The ash conveying device comprises a conveying body, a drive unit, a pair of moving parts, a link unit, a bottom, and a scraper. The conveying body is arranged in a loop. The drive unit generates power to move the conveying body in a loop. The pair of moving parts are arranged at both ends of the conveying body in the width direction and move together with the conveying body. The link unit connects the pair of moving parts and moves together with the conveying body. The bottom is located below the conveying body and is where ash accumulates. The scraper is attached to the link unit and scrapes and collects the ash accumulated at the bottom as it passes over the bottom. [Effects of the Invention]

[0008] According to this application, it is possible to provide an ash conveying device that can collect fallen ash while suppressing the load on the conveying body that transports the ash. [Brief explanation of the drawing]

[0009] [Figure 1] A schematic side view of an ash conveying device according to one embodiment of this application. [Figure 2] Perspective view of the chain and conveyor. [Figure 3] Exploded perspective view of the chain and conveyor. [Figure 4] A perspective view showing a configuration in which covers and receiving parts are provided around the gaps between transport units. [Figure 5] A schematic side view showing the operation of the cover and receiving part. [Figure 6] A perspective view showing a configuration in which a scraper is provided in the link section. [Figure 7] Side view of the scraper and link section. [Figure 8] A perspective view showing the operation of the scraper and reversal guide. [Figure 9]Perspective view of the reversal guide. [Figure 10] A side view showing how the reversing guide moves in accordance with the position of the drive sprocket. [Modes for carrying out the invention]

[0010] Next, embodiments of this application will be described with reference to the drawings. Figure 1 shows a part of the combustion equipment 100. The combustion equipment 100 is equipment for burning materials, and is, for example, an incinerator, a firing facility, or a power generation facility. The ash generated in the combustion equipment 100 can vary, and may include, for example, powdery ash that is scattered along with the gas, granular ash that falls due to gravity, and ash with very large particle size that causes a large impact when it falls. In the following, ash with very large particle size that causes a large impact when it falls may be referred to as "large ash".

[0011] Ash generated in the combustion equipment 100 is supplied to the ash conveying device 1. In this embodiment, a hopper is provided below the combustion chamber in the combustion equipment 100, and ash is supplied from the combustion equipment 100 to the ash conveying device 1 by dropping the ash through the hopper. Note that the configuration using a hopper is just one example, and ash may also be conveyed to the ash conveying device 1 using a slope or a conveying device, etc.

[0012] The ash conveying device 1 is a device that conveys the ash generated in the combustion equipment 100 to the next process. The ash conveying device 1 in this embodiment is connected to the combustion equipment 100 and is a device that temporarily conveys the ash generated in the combustion equipment 100. In other words, there is no conveying device that conveys ash between the combustion equipment 100 and the ash conveying device 1. Therefore, the ash supplied to the ash conveying device 1 is often at a high temperature, and the particle shape of the ash also varies. At least a part of the ash conveying device 1 in this embodiment can also be applied to a conveying device that further conveys ash conveyed by another conveying device.

[0013] As shown in FIG. 1, the ash conveying device 1 includes an exterior part 10. The exterior part 10 covers various members constituting the ash conveying device 1. An inlet 11, an outlet 12, and a bottom 13 are formed in the exterior part 10. The inlet 11 is connected to the combustion equipment 100 and is the part where ash is supplied from the combustion equipment 100. The outlet 12 is connected to the equipment of the next process and is the part where the ash conveyed by the ash conveying device 1 is discharged. The next process is, for example, pulverization of ash, cooling of ash, or further conveyance of ash, etc. The bottom 13 is the part constituting the bottom of the exterior part 10. Since the ash supplied to the ash conveying device 1 scatters or falls from the conveyor described later, ash accumulates on the bottom 13.

[0014] The ash conveying device 1 conveys ash using a conveyor 20. The conveyor 20 of this embodiment is a chain conveyor, and specifically includes a drive part 21, a drive sprocket 22, a chain 23, and a driven sprocket 24.

[0015] The drive part 21 is, for example, an electric motor and a speed reducer, and generates power for driving the conveyor 20. The drive part 21 may be arranged inside the exterior part 10 or outside. The drive part 21 is not limited to an electric motor. For example, when the conveyor 20 is a hydraulic conveyor, the drive part 21 may be a hydraulic motor.

[0016] A pair of drive sprockets 22 are provided side by side in the rotation axis direction. The drive part 21 transmits power to each of the pair of drive sprockets 22. A chain 23 is wound around each of the pair of drive sprockets 22. The chain 23 is further wound around the driven sprocket 24. Thereby, power is transmitted to the driven sprocket 24 via the chain 23, and the driven sprocket 24 rotates drivenly. Thus, the conveyor 20 of this embodiment is a chain conveyor. Note that the drive sprocket 22 corresponds to a "rotating part" that is rotationally driven by the drive part 21 and transmits power to a conveying body 30 described later. The conveyor 20 is not limited to a chain conveyor, and may be other conveyors such as a belt conveyor, for example.

[0017] Between a pair of chains 23, a carrier 30 shown in Fig. 2 is arranged. The carrier 30 is arranged in a range including between the pair of chains 23, and carries ash placed on a carrying surface 30a. In the following description, in the carrying surface 30a, the direction orthogonal to the moving direction is referred to as the width direction.

[0018] The carrier 30 is arranged in a loop shape and moves so as to circulate along a loop-shaped path. The range in which the carrier 30 moves includes a range in which the carrying surface 30a faces upward and a range in which the carrying surface 30a faces downward. Facing upward means that the upward direction is included in the component of the normal line of the carrying surface 30a, and includes facing obliquely upward. The same applies to downward.

[0019] <00,00098>Also, as shown below, a "first inversion range", a "second inversion range", and an "inner range" are defined. The first inversion range is a range where the carrying surface 30a switches from facing downward and moving straight to facing upward and moving straight. The second inversion range is a range where the carrying surface 30a switches from facing upward and moving straight to facing downward and moving straight. The inner range is the inner range surrounded by the carriers 30 arranged in a loop shape. Since it is difficult to completely seal the inner range, ash also exists in the inner range.

[0020] The conveyor 20 includes a chain plate 26 shown in Fig. 3 as a member for attaching the carrier 30. The chain plate 26 is a type of chain attachment. The chain plate 26 is a plate fixed to the surface of the chain 23 facing the inner side in the width direction. One chain plate 26 is fixed to each link of the chain 23. Mounting holes are formed in the chain plate 26. The chain plate 26 is arranged at both ends in the width direction of the carrier 30 and corresponds to a "moving part" that moves together with the carrier 30.

[0021] The carrier 30 includes a plurality of link parts 31, mesh sheets 32, fastening parts 33, and side plates 34, respectively.

[0022] ] The link sections 31 are attached to the chain plates 26 located at both ends in the width direction, connecting the pair of chain plates 26 in the width direction. Specifically, the mounting holes formed in the link sections 31 and the mounting holes formed in the chain plates 26 are aligned and attached using fasteners such as bolts and nuts. Note that the use of fasteners is just one example; for example, they may also be attached by welding. The link sections 31 are elongated members, and are arranged so that their longitudinal direction coincides with the width direction. In addition, the link sections 31 arranged along the direction of movement of the conveyor body 30 are spaced apart.

[0023] The configuration in which each link portion 31 is individually attached to the chain plate 26 is just one example and can be changed. For example, multiple link portions 31 may be connected together to a relay member, and the relay member may be connected to the chain 23.

[0024] The mesh sheet 32 ​​is a metal, mesh-like sheet, or in other words, a wire mesh. The mesh sheet 32 ​​is attached to the link section 31. One mesh sheet 32 ​​is placed for multiple link sections 31. Gaps are formed between adjacent mesh sheets 32. The gaps between the mesh sheets 32 overlap with the gaps between the link sections 31. Hereafter, these gaps will be referred to as "gaps between the conveying bodies 30".

[0025] The mesh sheet 32 ​​is attached to the link portion 31 using fastening portion 33. The fastening portion 33 is a flat plate-shaped member with mounting holes formed therein. Specifically, the mesh sheet 32 ​​is attached by aligning the mounting holes formed in the link portion 31, the mesh sheet 32, and the fastening portion 33, and fastening the mounting fixture, thereby sandwiching the mesh sheet 32 ​​between the link portion 31 and the fastening portion 33. Note that this is just one example of how to attach the mesh sheet 32, and it may be attached without fastening portion 33.

[0026] The side plates 34 are located at both ends in the width direction and are erected outward from the conveying surface 30a along the height direction. The side plates 34 prevent ash from falling outward in the width direction from the conveying body 30. In this embodiment, the side plates 34 are integrated with the fastening part 33, but they may be separate. In addition, adjacent side plates 34 are arranged to overlap in the direction of movement. This makes it difficult for gaps to form between the side plates 34, thus preventing ash from falling. Furthermore, even when the conveying path changes from a straight line to an oblique direction or reverses, contact between adjacent side plates 34 can be suppressed.

[0027] The conveyor body 30 of this embodiment is equipped with multiple mesh sheets 32. Therefore, when a mesh sheet 32 ​​is damaged, only the damaged mesh sheet 32 ​​needs to be replaced, thus reducing the effort and cost involved in repairing damaged mesh sheets 32. In particular, since gaps are formed between the mesh sheets 32, there is no need to connect the mesh sheets 32 together, which further reduces the effort involved.

[0028] Furthermore, if the conveyor 30 is composed of a single wire mesh, stretching that occurs in one part will be transmitted to other parts. For example, if stretching occurs in several places on the left side of the wire mesh, these stretches will accumulate, causing the left side of the wire mesh to deform and stretch significantly. As a result, the left side of the wire mesh will curve outward in the width direction, causing meandering. In contrast, since the conveyor 30 of this embodiment is composed of multiple mesh sheets 32, stretching that occurs in one mesh sheet 32 ​​is less likely to be transmitted to another mesh sheet 32. As a result, bending and meandering of the conveyor 30 are less likely to occur. In particular, in this embodiment, gaps are formed between the mesh sheets 32, making it even less likely for stretching in one mesh sheet 32 ​​to be transmitted to another mesh sheet 32.

[0029] Furthermore, the conveying surface 30a in this embodiment is the surface of the mesh sheet 32. Since the mesh sheet 32 ​​is made of metal and has a mesh structure, it has excellent heat dissipation properties. Therefore, high-temperature ash can be cooled efficiently.

[0030] Next, with reference to Figures 4 and 5, the cover 41 and receiving part 43 attached to the transport body 30 will be described.

[0031] As shown in Figure 4, covers 41 and receiving parts 43 may be attached near the gaps between the conveying bodies 30. Covers 41 and receiving parts 43 may be provided near all gaps, or near some of the gaps.

[0032] The cover 41 is a flat plate-shaped member. The size of the cover 41 is larger than the gap between the conveying bodies 30. The cover 41 is positioned to cover the gap between the conveying bodies 30. Specifically, the cover 41 is positioned on the conveying surface 30a side of the conveying body 30. The cover 41 is attached to the downstream link portion 31 in the direction of movement of the two link portions 31 that straddle the gap, but is not attached to the other link portion 31. Depending on the configuration of the mesh sheet 32, the cover 41 may also be attached to the mesh sheet 32.

[0033] As shown in Figures 5A, B, and C, in the range where the conveying surface 30a is facing upward and moving straight, the cover 41 is closed and the gaps between the conveying bodies 30 are sealed. Therefore, ash is less likely to fall from the conveying bodies 30 into the interior. Also, as shown in Figures 5D and E, in the range where the conveying surface 30a is facing downward and moving straight, the cover 41 is closed and the gaps between the conveying bodies 30 are sealed. At this time, a space for containing ash is formed by the gaps between the conveying bodies 30 and the cover 41. Ash accumulates in this space.

[0034] In particular, a brush 46 is positioned within the interior area to guide the ash present in the interior area toward the containment space. The brush 46 corresponds to an "ash guide." The brush 46 is attached to and supported by a brush support 91. The brush support 91 is not connected to the transport body 30, and the brush support 91 does not move even when the transport body 30 moves. The brush support 91 is, for example, a part of the frame that supports the transport body 30. The tip of the brush 46 is positioned to contact the back surface of the transport body 30. As a result, when the transport body 30 moves, the ash accumulated on the back surface of the transport body 30 is blocked by the brush 46 and guided toward the containment space.

[0035] The ash guide is not limited to the brush 46. For example, a scraper made of rubber or soft resin may be provided instead of the brush 46. Because the ash guide is flexible, even if the conveyor 30 is displaced upward due to vibration or the like, the ash guide will bend, thus suppressing damage to the ash guide. Note that the ash guide is not an essential component and can be omitted.

[0036] Furthermore, in the first reversal range, the transport path changes in an arc shape. Therefore, adjacent link sections 31 are not aligned in a straight line. In addition, the cover 41 is fixed only to the downstream link section 31. As a result, the cover 41 opens, as shown in F in Figure 5, and the gap is opened. Consequently, ash falls out from the gap in the internal space.

[0037] The receiving portion 43 is a component for receiving ash that falls through the gap. As shown in Figure 4, the receiving portion 43 is located on the upstream side of the cover 41 in the direction of movement of the conveyor 30. The receiving portion 43 is attached to the upstream link portion 31 of the two link portions 31 that straddle the gap. The receiving portion 43 may also be attached to the link portion 31 further upstream.

[0038] The receiving portion 43 comprises an upright portion 44 and a protruding portion 45. The upright portion 44 is the part that stands outward from the conveying body 30 (in other words, on the opposite side of the internal range). The protruding portion 45 is the part that protrudes from the upright portion 44 toward the downstream side of the conveying body 30 (in other words, toward the cover 41 side, the gap side). Side plates are also arranged at both ends in the width direction. Note that the shape of the receiving portion 43 is an example and can be changed.

[0039] Since the receiving portion 43 is positioned upstream of the cover 41, as shown in Figure 5F, ash that falls through the gap in the first inversion range can be received by the receiving portion 43. The ash is caught by the upright portion 44, and the falling of the ash is suppressed by the protruding portion 45 and the side plate.

[0040] Subsequently, as shown in Figures 5A, B, and C, the receiving section 43 restricts the movement of the ash in the range where the conveying surface 30a is facing upward and moving straight, thus enabling proper conveyance of the ash. In particular, as shown in Figure 5C, the receiving section 43 can suppress the falling of ash (especially large ash) to the rear in the range where the conveying body 30 moves diagonally upward. As a result, the ash can be discharged from the discharge port 12 without falling.

[0041] Subsequently, as shown in Figures 5D and E, in the range where the transport surface 30a moves straight downwards, the receiving section 43 also functions as a scooping section for scooping up the ash accumulated at the bottom 13. That is, the tip of the protruding section 45 can scrape away the ash, and the ash can be collected in the space formed by the upright section 44 and the protruding section 45. The ash collected in this way is prevented from falling because the upright section 44 remains the bottom surface even when passing through the first inversion range. Therefore, the ash collected by scooping up the bottom 13 can be transported to the discharge port 12 and discharged.

[0042] In this embodiment, one receiving section 43 has both the function of receiving ash falling from the gap and the function of scooping up ash accumulated at the bottom 13. Alternatively, separate members may be provided for each of these functions. Furthermore, the number of receiving sections 43 and upright sections 44 that are arranged is not particularly limited; they may be arranged in the gaps between all the conveying bodies 30, or they may be arranged in only some of the gaps.

[0043] Next, with reference to Figures 6 to 10, the conveyor 20, which is equipped with a scraper 50 and a reversing guide 60, will be described.

[0044] The conveyor 20 shown in Figures 6 to 10 does not require that gaps be formed between the conveyed objects 30. In other words, in this conveyor 20, gaps may or may not be formed between the conveyed objects 30. Furthermore, the features included in the conveyor 20 shown in Figures 4 and 5 and the features included in the conveyor 20 shown in Figures 6 to 10 can be combined as long as no contradictions arise.

[0045] The scraper 50 is attached to the link section 31 and moves together with the conveyor 30. The scraper 50 scrapes and collects the ash accumulated on the bottom 13 in the range where the conveying surface 30a is facing downwards and moving in a straight line. As shown in Figure 6, the scraper 50 comprises a fixed section 51, a movable section 52, a scraping section 53, a storage section 54, a mounting surface 55, and a perforated metal 56.

[0046] The fixing portion 51 is attached to the link portion 31. More specifically, the fixing portion 51 is attached to the side of the link portion 31 facing the conveying surface 30a. A cylindrical pin 51a is attached to the fixing portion 51. In this embodiment, two fixing portions 51 are attached to one link portion 31, but there may be one or three or more.

[0047] The movable part 52 is rotatably attached to the fixed part 51. Specifically, the pin 51a of the fixed part 51 is inserted into the movable part 52 for attachment. This allows the movable part 52 and the fixed part 51 to rotate relative to each other. With this configuration, as shown in Figure 7, the scraper 50 is rotatable relative to the link part 31. Note that the scraper 50 is not biased in the rotational direction and no power is supplied to it, so the scraper 50 rotates by its own weight.

[0048] In the following explanation, the end of the scraper 50 closest to the mounting position will be referred to as the base end, and the opposite end will be referred to as the tip. Also, as shown in Figure 7, the position when the scraper 50 is in contact with the link portion 31 will be referred to as the "contact position," and the position when the scraper 50 is separated from the link portion 31 will be referred to as the "separated position."

[0049] Furthermore, a stopper 57 is formed on the scraper 50 of this embodiment. The stopper 57 is a part that suppresses excessive rotation of the reversal guide 60. In this embodiment, the stopper 57 is formed on a part of the fixed part 51, and by contacting and interfering with a part of the scraper 50 that has rotated excessively, it suppresses excessive rotation of the scraper 50.

[0050] The scraping portion 53 is a plate-shaped part formed at the tip of the scraper 50. When the scraping portion 53 moves along the bottom 13, it assumes a separated position, and the tip of the scraping portion 53 comes into contact with or close to the bottom 13. In this state, as the scraper 50 moves together with the conveyor 30, the scraping portion 53 scrapes away the ash, guiding it to the inside side of the scraper 50 (in other words, the base end side).

[0051] The containment section 54 is the part that contains the ash scraped out by the scraping section 53. The containment section 54 is formed behind the tip of the scraping section 53. Specifically, the containment section 54 is made up of multiple plates, and a space is formed surrounded by these plates. The ash is contained in this space.

[0052] The mounting surface 55 and the perforated metal 56 are positioned closer to the base end than the scraping portion 53 and closer to the tip end than the mounting position. The mounting surface 55 and the perforated metal 56 are parts that separate the scraping portion 53 from the mounting position, but they also have the following functions. The following functions are not mandatory and can be omitted.

[0053] In other words, the mounting surface 55 is a surface capable of supporting ash in the range where the transport surface 30a is facing upward and moving straight. In this embodiment, the mounting surface 55 is a flat surface, but if there is a wall portion to suppress the falling of ash, the mounting surface 55 may be inclined or the like. The perforated metal 56 is a plate-shaped member that is positioned on the link portion 31 side of the mounting surface 55.

[0054] The perforated metal 56 has numerous holes, resulting in high heat dissipation. Furthermore, since the perforated metal 56 is connected to the containment section 54 and the mounting surface 55, heat transferred from these parts can be released. Because the mounting surface 55 is located outside the perforated metal 56, ash falling through the holes in the perforated metal 56 is suppressed. Even if ash were to fall through the perforated metal 56, it could be recovered using the scraper 50.

[0055] As shown in Figure 6, a recess 31a is formed in the link portion 31 in this example. The recess 31a is an open portion on the side of the conveying surface 30a. Therefore, ash can be contained in the recess 31a in the range where the conveying surface 30a is facing upward and moving straight. The recess 31a is not an essential shape and can be omitted.

[0056] Next, the operation of the scraper 50 will be explained with reference to Figure 8.

[0057] As shown in Figure 8A, when the conveying surface 30a faces downward and the scraper 50 moves along the bottom 13, the scraper 50 rotates under its own weight and assumes a separated position. The scraper 50 rotates until the scraping portion 53 contacts the bottom 13 or the ash surface, so that the ash can be scraped out using the scraping portion 53. The ash scraped out and sent to the rear is stored in the storage portion 54.

[0058] As shown in Figure 8B, when the scraper 50 passes through the first reversal range, the scraper 50 is guided along the reversal guide 60, which will be described later. As a result, the posture of the scraper 50 gradually changes to the contact posture.

[0059] As shown in Figure 8C, when the transport surface 30a is facing upwards and moving straight, the scraper 50 is in a contact position. Therefore, the recess 31a can be closed by the scraper 50. Also, when the scraper 50 is in a contact position, the position of the storage section 54 and the position of the recess 31a overlap. Furthermore, in the contact position, the lower part of the storage section 54 is open, and the upper part of the recess 31a is open. As a result, in the contact position, the space formed by the storage section 54 and the space formed by the recess 31a are connected. This allows ash to be stored and transported using a large space. In addition, in the contact position, the transport surface 30a is located above the scraper 50, so large ash and other materials can be received and transported.

[0060] As shown in Figure 8D, when the conveying surface 30a moves within the second inversion range, the storage section 54 and the recess 31a separate, and their orientations are reversed, causing the stored ash to fall and be discharged from the discharge port 12. The position of the scraper 50 also gradually changes to a separated position. In this embodiment, the stopper 57 prevents excessive rotation of the scraper 50, so the scraper 50 does not separate significantly from the link section 31. As a result, the scraper 50 can be guided in an appropriate position toward the slope adjacent to the discharge port 12. An appropriate position is one in which the scraping section 53 is located downstream of the mounting position.

[0061] Next, the reversal guide 60 will be described with reference to Figures 9 and 10.

[0062] As described above, the reversal guide 60 is a member that guides the scraper 50 as it passes through the first reversal range. As shown in Figure 9, the reversal guide 60 comprises a guide portion 61, a positioning portion 62, a connecting plate 63, and a sliding portion 64.

[0063] The guide section 61 is mounted on the bottom section 13. The guide section 61 is configured to cover a portion of the radially outer surface of the drive sprocket 22. The guide section 61 is separate from the conveyor body 30 and is movable relative to it. Therefore, even if the conveyor body 30 moves, the guide section 61 does not move. Note that the guide section 61 may be positioned anywhere other than the bottom section 13 as long as it is movable relative to the conveyor body 30.

[0064] The guide section 61 comprises an arc guide 61a and an end guide 61b. The arc guide 61a has an arc-shaped guide surface formed thereon. The center of the arc of the guide section 61 coincides with the center of the drive sprocket 22. In the first reversal range, the distance from the conveyor 30 to the arc guide 61a is shorter than the total length of the scraper 50 (length from the base to the tip), and more specifically, it is the same as the distance from the bottom 13 to the conveyor 30.

[0065] If the arc guide 61a were not provided, the tip of the scraper 50 would not move smoothly in an arc, resulting in unstable behavior of the scraper 50 and the possibility of the ash contained in the storage section 54 falling out. Furthermore, since a load is constantly applied to the stopper 57 when moving within the first reversal range, there is a concern that the lifespan of the stopper 57 will be shortened. In this respect, the provision of the arc guide 61a allows the scraper 50 to move smoothly while its tip is able to reverse in an arc. This makes it less likely for the ash contained in the storage section 54 to fall out.

[0066] Furthermore, as shown in Figure 8A', not all of the ash scraped out by the scraping section 53 as it moves along the bottom section 13 is collected in the storage section 54; some of the ash (especially the ash located in front of the scraping section 53) is not collected in the storage section 54. Therefore, if the arc guide 61a is not provided, this portion of the ash cannot be recovered. In contrast, by having the scraping section 53 move along the arc guide 61a, this portion of the ash can be moved along the arc guide 61a and dropped towards the storage section 54 for recovery.

[0067] The terminal guide 61b is connected to the downstream side of the arc guide 61a and is located radially outside the arc of the arc guide 61a. The presence of the terminal guide 61b makes it less likely for the ash scooped up along the arc guide 61a to fall outside the reversal guide 60. Note that the terminal guide 61b is not an essential component and can be omitted.

[0068] The positioning unit 62 positions the reversal guide 60. Specifically, the drive sprocket 22 is provided with a shaft member 22a. The shaft member 22a is an axial member that coincides with the rotation center of the drive sprocket 22. The positioning unit 62 includes an arc-shaped portion that follows the outer shape of the shaft member 22a so that it can be positioned relative to the shaft member 22a. As a result, by aligning the positioning unit 62 with the shaft member 22a, the reversal guide 60 can be positioned relative to the drive sprocket 22.

[0069] Note that the positioning configuration is just one example and may differ from that of this embodiment. For example, a configuration in which a protrusion formed on the shaft member 22a is inserted into a recess formed on the positioning unit 62 may be used. Since the trajectory of the scraper 50 passing through the first reversal range is an arc, the shaft member 22a, which is the member closest to its center of rotation, is suitable as the positioning partner, but the positioning partner is not limited to that. For example, another part of the drive sprocket 22 or another part of the conveyor 20 may be the positioning partner of the positioning unit 62.

[0070] The connecting plate 63 is a member that connects the positioning portion 62 and the guide portion 61. In this embodiment, the positioning portion 62 and the connecting plate 63 are connected by fasteners such as bolts, and are therefore detachable. The connecting plate 63 may be a part of the positioning portion 62 or a part of the guide portion 61.

[0071] The sliding portion 64 is the part for sliding the reversal guide 60. In this embodiment, no rail is provided, and the sliding portion 64 is a member that contacts the mounting surface. As a result, when the position of the shaft member 22a, which is the counterpart for positioning, is changed, the reversal guide 60 slides and moves, thereby maintaining the positional relationship between the shaft member 22a and the reversal guide 60. Note that a rail may be provided to guide the sliding portion 64.

[0072] In this case, the drive sprocket 22 may be moved in parallel, as shown in Figure 10, for purposes such as adjusting the tension of the conveyor 30. In this case, the shaft member 22a moves in parallel by the same amount as the drive sprocket 22, and the shaft member 22a moves the positioning part 62 accordingly. In particular, since a sliding part 64 is provided in this embodiment, the reversing guide 60 can be slid smoothly. As a result, the positional relationship between the drive sprocket 22 and the reversing guide 60 does not change before and after adjusting the tension of the conveyor 30. Therefore, the effort required to adjust the position of the reversing guide 60 can be reduced.

[0073] As described above, the ash conveying device 1 of this embodiment conveys ash generated in the combustion equipment 100. The ash conveying device 1 comprises a conveying body 30, a drive unit 21, a pair of chain plates 26, a link unit 31, a bottom unit 13, and a scraper 50. The conveying body 30 is arranged in a loop. The drive unit 21 generates power to circulate the conveying body 30 in a loop. The pair of chain plates 26 are positioned at both ends of the conveying body 30 in the width direction and move together with the conveying body 30. The link unit 31 connects the pair of chain plates 26 and moves together with the conveying body 30. The bottom unit 13 is located below the conveying body 30 and is where ash accumulates. The scraper 50 is attached to the link unit 31 and scrapes and collects the ash accumulated on the bottom unit 13 as it passes over the bottom unit 13. The above is Feature 1.

[0074] This allows the scraper 50 to be used to collect the ash accumulated at the bottom. In addition, since the scraper 50 is attached to the link section 31, the load on the conveyor 30 can be reduced.

[0075] In the ash conveying device 1 of this embodiment, the scraper 50 comprises a scraping section 53 and a storage section 54. The scraping section 53 scrapes out the ash. The storage section 54 stores the ash scraped out by the scraping section 53. The above is Feature 2.

[0076] This allows the removed ash to be collected, making it easier to transport the ash.

[0077] In the ash conveying device 1 of this embodiment, the scraper 50 is rotatably attached to the link portion 31. This is feature 3.

[0078] This allows the orientation of the scraper 50 to be easily changed. For example, it becomes possible to move the scraper 50 along the bottom 13.

[0079] In the ash conveying device 1 of this embodiment, a stopper 57 is provided to prevent the rotation angle of the scraper 50 away from the conveying body 30 from exceeding a threshold. The above is feature 4.

[0080] This prevents the scraper 50 from rotating excessively.

[0081] In the ash conveying device 1 of this embodiment, the link portion 31 has a recess 31a formed therein for accommodating ash when the conveying surface 30a of the conveying body 30 is facing upward. The recess 31a of the link portion 31 is closed by the scraper 50 when the conveying surface 30a of the conveying body 30 is facing upward. These are the features 5.

[0082] This allows the ash to be contained in the link section 31 and transported.

[0083] In the ash conveying device 1 of this embodiment, the scraper 50 has a mounting surface 55 on which ash is placed and conveyed when the conveying surface 30a of the conveying body 30 is facing upward. The above is the feature 6.

[0084] This allows for efficient transport of ash.

[0085] In the ash conveying device 1 of this embodiment, a portion of the plate material constituting the scraper 50 is perforated metal 56. These are the features 7.

[0086] This improves the cooling performance of the scraper.

[0087] Any combination of features 1 through 7 described above can be used. For example, feature N (N=1,2,...,7) can be combined with at least one of features 1 through N-1 as appropriate.

[0088] Preferred embodiments of this application have been described above, but the above configuration can be modified as follows, for example. Modifications may be made individually, or multiple modifications may be made in any combination.

[0089] The conveyor 20 in the above embodiment includes a portion that moves horizontally and a portion that moves diagonally upward. Alternatively, the conveyor 20 may consist only of a portion that moves horizontally.

[0090] The bottom 13 where the ash accumulates is not limited to a flat surface, but may also be sloped.

[0091] The components of the conveyor 20 are not limited to being connected using fasteners; they may also be connected by other methods, such as welding.

[0092] The driven sprocket 24 may be placed in the first reversal range, or the drive sprocket 22 may be placed in the second reversal range. [Explanation of Symbols]

[0093] 1. Ash conveying device 20 Conveyors 30 Conveyor 31 Link section 32 Mesh Sheets 41 Cover 43 Receiving part 50 Scrapers 60 Reversal Guide

Claims

1. In an ash transport device that transports ash generated in a combustion facility, A conveyor arranged in a loop, A drive unit that generates power to move the conveying body in a loop shape, A pair of movable parts are arranged at both ends in the width direction of the conveying body and move together with the conveying body, A link section that connects a pair of movable parts and moves together with the transport body, Located below the aforementioned transporter, the bottom where ash accumulates, A scraper attached to the link section, which scrapes and collects ash accumulated on the bottom as it passes over the bottom, An ash conveying device equipped with the following features.

2. The ash conveying device according to claim 1, The aforementioned scraper is, The raking section for removing ash, The aforementioned scraping section contains a storage section for collecting the ash scraped out, An ash conveying device equipped with the following features.

3. The ash conveying device according to claim 1, The scraper is rotatably mounted to the link portion, and is part of an ash conveying device.

4. The ash conveying device according to claim 3, An ash conveying device comprising a stopper that prevents the rotation angle of the scraper away from the conveying body from exceeding a threshold.

5. The ash conveying device according to claim 3, The link portion is provided with a recess for accumulating ash when the conveying surface of the conveying body faces upward. An ash conveying device in which the recess of the link portion is closed by the scraper when the conveying surface of the conveying body faces upward.

6. The ash conveying device according to claim 3, The ash conveying device is characterized in that the scraper has a mounting surface formed thereon for placing and conveying ash when the conveying surface of the conveying body is facing upward.

7. The ash conveying device according to claim 1, An ash conveying device in which a portion of the plate material constituting the scraper is perforated metal.

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