Boiler equipment and accumulated ash cleaning device thereof

Abstract

The utility model discloses an accumulated dust cleaning device which comprises two guide rails extending in the horizontal direction, the two guide rails are arranged in an aligned mode in the vertical direction and matched in parallel, a support is arranged between the two guide rails, and the top end and the bottom end of the support are arranged on the guide rails in a sliding mode in a one-to-one correspondence mode. A position adjusting mechanism capable of stretching out and drawing back in a reciprocating mode in the horizontal direction is arranged on the support in a linkage mode, a plurality of nozzles are arranged on the position adjusting mechanism, and the nozzles are evenly distributed in the horizontal direction at equal intervals. And the water supply assembly can convey clean water to the nozzles. The accumulated ash cleaning device can efficiently and thoroughly carry out ash cleaning treatment on the heat exchange pipe on the convection heat exchange surface of the boiler equipment so as to guarantee the heat exchange effect on the convection heat exchange surface and the overall operation efficiency of the boiler equipment. The utility model further discloses boiler equipment applying the accumulated ash cleaning device.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler equipment and its supporting cleaning and maintenance equipment technical field, especially relate to a soot cleaning device, the utility model discloses a boiler equipment using the soot cleaning device. BACKGROUND

[0002] In the current garbage incineration field, the waste incineration waste heat is usually used to drive the boiler equipment operation. Correspondingly, the flue gas produced after the garbage burns in the incinerator contains a large amount of dust, and in the high temperature environment, the dust is easy to adhere to the surface of the heat exchange tube of the boiler equipment, especially after the long time continuous operation of the waste incineration waste heat boiler, the thick soot is produced on the convection heating surface of the boiler. In order to ensure the heat exchange effect of the boiler heating surface, the soot on the convection heating surface needs to be removed to ensure the working performance of the heat exchange tube on the corresponding convection heating surface.

[0003] At present, the soot cleaning of the convection heating surface heat exchange tube of the waste incineration waste heat boiler is usually implemented by the staff. Specifically, during the shutdown maintenance of the waste incineration waste heat boiler, the staff reaches the working position corresponding to the convection heating surface, and then cleans the soot on the convection heating surface. However, due to the small spacing between the heat exchange tubes on the convection heating surface, the soot in the gap between the heat exchange tubes cannot be effectively cleaned when the staff implements the soot cleaning, which leads to more and more soot on the heat exchange tube row, seriously affecting the heat exchange efficiency of the convection heating surface, and thus adversely affecting the overall working performance of the waste incineration waste heat boiler.

[0004] In addition, there is also a technology in the industry that uses a vibration cleaning device to clean the corresponding position of the boiler equipment. This technology uses the cleaning device to vibrate the heat exchange tube and other components on the boiler equipment, so that the heat exchange tube and other components vibrate, so that the soot attached to the surface of the heat exchange tube and other components falls off, thereby achieving the purpose of cleaning the corresponding position and components.

[0005] However, the above-mentioned vibration ash removal process completely relies on the vibration of the corresponding parts of the boiler equipment to drive the structural vibration of the parts themselves to achieve ash removal, and long-term use will cause the heat exchange tubes and other parts of the boiler equipment to be worn out or even damaged due to frequent non-working mechanical vibration, thereby seriously reducing the service life of the corresponding heat exchange tubes and other parts, and increasing the operation and maintenance cost of the boiler equipment. On the other hand, the vibration ash removal device can only rely on the vibration of the parts with accumulated ash to remove the accumulated ash, and it cannot directly process the accumulated ash attached to the heat exchange tubes and other parts of the boiler equipment, resulting in low ash removal efficiency in actual application, especially when the adhesion of the accumulated ash on the surface of the parts is large or the thickness of the accumulated ash layer is large, the vibration ash removal effect is not ideal, which causes inconvenience to the ash removal and efficient operation of the corresponding boiler equipment.

[0006] Therefore, how to efficiently and completely implement ash removal treatment on the heat exchange tubes at the convection heat exchange surface of the boiler equipment to ensure the heat exchange effect at the convection heat exchange surface and the overall operation efficiency of the boiler equipment is an important technical problem to be solved by those skilled in the art at present. Practical new type content

[0007] The purpose of the present application is to provide an accumulated ash cleaning device which can efficiently and completely implement ash removal treatment on the heat exchange tubes at the convection heat exchange surface of the boiler equipment to ensure the heat exchange effect at the convection heat exchange surface and the overall operation efficiency of the boiler equipment. Another purpose of the present application is to provide a boiler equipment applying the above-mentioned accumulated ash cleaning device.

[0008] To solve the above-mentioned technical problems, the present application provides an accumulated ash cleaning device, which comprises two guide rails extending in the horizontal direction, the two guide rails are arranged in vertical alignment and parallel cooperation, a support is arranged between the two guide rails, and the top end and the bottom end of the support are respectively and one by one correspondingly slidably arranged on the guide rails.

[0009] A position adjusting mechanism capable of reciprocating and stretching in the horizontal direction is connected to the support, a plurality of nozzles are arranged on the position adjusting mechanism, and the nozzles are equidistantly and uniformly distributed in the horizontal direction.

[0010] The accumulated ash cleaning device further comprises a water supply assembly capable of supplying cleaning water to the nozzles.

[0011] Preferably, a storage box is arranged on the support, and the position adjusting mechanism is a scissor mechanism connected to the storage box.

[0012] Preferably, a lifting rail extending in the vertical direction is arranged on the support, and the storage box is slidably arranged on the lifting rail.

[0013] Preferably, a longitudinal locking device capable of locking the storage box on the lifting track is further included.

[0014] Preferably, the support is a rod arranged in a vertical direction, and the lifting track is correspondingly arranged on the outer wall of the support.

[0015] Preferably, each of the nozzles is arranged in one-to-one correspondence with each inflection point of the top and bottom of the scissor mechanism.

[0016] Preferably, the water supply assembly includes a water tank containing cleaning water, and a water supply pipe in communication between the water tank and each of the nozzles.

[0017] Preferably, a water pump capable of pumping cleaning water from the water tank to the nozzles is arranged on the water supply pipe.

[0018] Preferably, the water supply pipe is a hose.

[0019] The utility model also provides a kind of boiler equipment, including furnace body, the top furnace wall of the furnace body is provided with, the middle part of the furnace body is provided with heat exchange pipe, the upper portion of the furnace body and the heat exchange pipe cooperation form convection heating surface, the lower portion of the convection heating surface is provided with hopper, further include with the convection heating surface alignment cooperation's ash cleaning device, the ash cleaning device is as any one of the above.

[0020] In the light of the prior art, the ash cleaning device can be used to clean the ash on the convection heat exchange surface of the boiler device, and the cleaning efficiency is improved, the cleaning effect is improved, and the service life of the main working components of the ash cleaning device is prolonged.

[0021] In another preferred embodiment of the utility model, the bracket is provided with a storage box, and the position adjusting mechanism is a scissor mechanism connected to the storage box. The scissor mechanism is flexible and efficient in operation, and its component structure is simple and reliable. It can realize large-range reciprocating extension and retraction through multi-stage hinged mechanisms, thereby further improving the effective operation range of the nozzles, making the ash cleaning device more efficient in cleaning the ash on the corresponding position of the boiler device, and further avoiding ash residue. The storage box can provide sufficient storage space and reliable structural protection for the scissor mechanism and the nozzles, so that the scissor mechanism and the nozzles do not interfere with other components in the non-working state, and the service life of the main working components of the ash cleaning device is further prolonged, and the equipment use and maintenance cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 The overall layout structure diagram of the accumulated dust cleaning device provided in the specific embodiment of the present application is shown.

[0024] Among them:

[0025] 11 - guide rail;

[0026] 12 - support; 121 - lifting track;

[0027] 13 - nozzle; 131 - storage box; 132 - scissor mechanism;

[0028] 14 - water tank; 141 - water supply pipe; 142 - water pump;

[0029] 20 - furnace body; 201 - convection heating surface;

[0030] 21 - top furnace wall;

[0031] 22 - heat exchange pipe;

[0032] 23 - hopper. DETAILED DESCRIPTION

[0033] The core of the present application is to provide an accumulated dust cleaning device, which can efficiently and completely clean the heat exchange pipe at the convection heat exchange surface of the boiler equipment to ensure the heat exchange effect at the convection heat exchange surface and the overall operation efficiency of the boiler equipment. In addition, a boiler equipment applying the accumulated dust cleaning device is also provided.

[0034] In order to make the person skilled in the art better understand the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0035] Please refer to Figure 1 .

[0036] In the specific embodiment, the accumulated dust cleaning device provided by the present application comprises two guide rails 11 extending in the horizontal direction, the two guide rails 11 are arranged in vertical alignment and parallel cooperation, and the support 12 is arranged between the two guide rails 11, and the top end and the bottom end of the support 12 are respectively and one by one correspondingly arranged on the guide rails 11.

[0037] The support 12 is provided with a position adjusting mechanism capable of reciprocating horizontally, and a plurality of nozzles 13 are arranged on the position adjusting mechanism and are equidistantly distributed along the horizontal direction.

[0038] The soot cleaning device further comprises a water supply assembly capable of supplying clean water to the nozzles 13.

[0039] During operation, the support 12 is controlled to move horizontally along the guide rail 11 to a proper position, and then the position adjusting mechanism is controlled to extend moderately along the horizontal direction to drive the nozzles 13 to move synchronously with the position adjusting mechanism until the nozzles 13 on the position adjusting mechanism reach the corresponding positions matched with the convection heating surface 201, and then the water supply assembly can supply water to the nozzles 13 to wash the corresponding positions of the convection heating surface 201 of the furnace body 20 through the water flow sprayed from the nozzles 13.

[0040] During the washing operation, the support 12 and the position adjusting mechanism can still be controlled to move moderately along the horizontal direction so that the nozzles 13 can move synchronously to the positions where the heat exchange pipes 22 are difficult to clean, thereby thoroughly washing each position of the convection heating surface 201 including the gap between the heat exchange pipes 22, and completely removing the soot attached to the convection heating surface 201 by using the clean water.

[0041] After the washing operation is completed, the water supply to the nozzles 13 by the water supply assembly is stopped, and the position adjusting mechanism can be retracted along the horizontal direction, and the nozzles 13 can be reset synchronously with the position adjusting mechanism, and then the support 12 can be controlled to move synchronously with the position adjusting mechanism and the nozzles 13 on the support 12 to the next working position to repeat the above washing operation process, thereby completing the cleaning operation of the soot at the next working position.

[0042] The soot cleaning device uses water flow to wash the soot attached to the convection heating surface of the boiler equipment, greatly improves the soot cleaning efficiency, and effectively removes the soot attached to the gap between the heat exchange pipes 22 and other conventional structures difficult to clean, thereby significantly optimizing the soot cleaning effect of the convection heating surface of the boiler equipment, and enabling the heat exchange pipes 22 and other functional components of the convection heating surface of the boiler equipment to operate stably and efficiently, and improving the heat exchange efficiency and the overall operation efficiency of the boiler equipment.

[0043] Generally, the ash cleaning device can be integrally mounted on the main structure of the boiler equipment, or can be a set of components that can be independently stored, transported and disassembled. If the latter, the ash cleaning device can be installed on the furnace wall, furnace body 20 or other more reliable support structure of the boiler equipment during the shutdown maintenance or other work gap of the boiler equipment, but the reliable structure support and stable installation arrangement of the guide rail 11 and the bracket 12 and the position adjusting mechanism are ensured, and sufficient action space is ensured to ensure the smooth operation of the ash cleaning device. After the ash cleaning treatment is completed, the ash cleaning device can be disassembled from the main structure of the boiler equipment to prevent the ash cleaning device from interfering with the structure of the furnace wall or the furnace body 20 and other components of the boiler equipment, and affecting the normal work of other matched functional components, so as to ensure the stable and reliable operation of the boiler equipment. When the ash cleaning treatment is implemented, the ash cleaning device is reassembled to the corresponding position of the boiler equipment.

[0044] Specifically, the bracket 12 is provided with a storage box 131, and the position adjusting mechanism is a scissor mechanism 132 connected to the storage box 131. The action process of the scissor mechanism 132 is flexible and efficient, and the component structure is simple and reliable. A large range of reciprocating extension and retraction can be achieved through multi-stage hinged mechanism, thereby further improving the effective operation range of each nozzle 13, so that the ash cleaning device can more efficiently clean the accumulated ash at the corresponding position of the boiler device, and further avoid the accumulation of ash.

[0045] The storage box 131 can provide sufficient storage space and reliable structural protection for the scissor mechanism 132 and the nozzles 13, so that the scissor mechanism 132 and the nozzles 13 do not interfere with other components in the non-working state, and the scissor mechanism 132 and the nozzles 13 are not damaged in the non-working state. In this way, the service life of the main working components of the ash cleaning device is further improved, and the equipment use and maintenance cost is reduced.

[0046] During the specific operation process, the position adjusting mechanism is not limited to the scissor mechanism 132 shown in the figure, but can also be a coaxial telescopic rod mechanism or a multi-section folding rod mechanism. The nozzles 13 can be arranged on the outer wall of the coaxial telescopic rod mechanism or the multi-section folding rod mechanism according to different specific structural forms. In summary, the specific structural form of the position adjusting mechanism can be flexibly adjusted and selected according to the actual assembly space layout of the device and the specific component function demand. In principle, as long as it can meet the matching application demand of the ash cleaning device and the boiler equipment.

[0047] It is understandable that the storage box 131 is preferably made of metal to ensure that it has a relatively ideal structural strength, so as to provide sufficient structural protection and stable structural support for the functional components such as the position adjusting mechanism and the nozzles 13 stored in the storage box 131, so as to ensure the operation reliability of the accumulated dust cleaning device.

[0048] More specifically, the bracket 12 is provided with a lifting rail 121 extending in the vertical direction, and the storage box 131 is slidingly arranged on the lifting rail 121. The storage box 131 is controlled to reciprocatingly lift along the lifting rail 121 to an appropriate height, so as to linkingly adjust the working height of each nozzle 13, thereby further increasing the position adjusting range of each nozzle 13, increasing the effective working area of the accumulated dust cleaning device, so as to efficiently clean the accumulated dust in a larger range, thereby further improving the working efficiency and working condition adaptability of the accumulated dust cleaning device.

[0049] Correspondingly, the accumulated dust cleaning device further comprises a longitudinal locking device capable of locking the storage box 131 on the lifting rail 121. After the storage box 131 is moved to an appropriate height along the lifting rail 121, the current height position of the storage box 131 can be locked by the longitudinal locking device, so as to prevent the longitudinal locking device from loosening or mispositioning along the lifting rail 121 during subsequent dust cleaning operation, thereby ensuring the operation precision and dust cleaning efficiency of the accumulated dust cleaning device.

[0050] Generally, the longitudinal locking device can be a latch mechanism or a clamping mechanism, and the longitudinal locking device can be integrally arranged on the storage box 131 and capable of being locked and fitted with the lifting rail 121 in position; or it can be integrally arranged on the lifting rail 121 and capable of being directly locked and fitted with the storage box 131 when the storage box 131 reaches the corresponding height position of the lifting rail 121. In summary, the specific structure type and arrangement position of the longitudinal locking device can be adjusted according to different actual working conditions. In principle, as long as it can meet the actual application needs of the accumulated dust cleaning device.

[0051] In addition, the accumulated dust cleaning device can further comprise a transverse locking device capable of reliably locking the bracket 12 on the guide rail 11, and the specific structure type of the transverse locking device can refer to the latch mechanism or clamping mechanism mentioned above for the longitudinal locking device.

[0052] It is understandable that in actual operation, whether it is to control the horizontal reciprocating movement of the support 12 along the guide rail 11, or to control the reciprocating lifting of the storage box 131 along the lifting guide rail 11 in the vertical direction, in the normal working condition, the above-mentioned actions and corresponding position adjustment can be realized by manual operation of the workers. In order to further improve the efficiency of the component action and reduce the labor intensity of the workers, a motor or a cylinder driving mechanism can also be arranged to drive the support 12 or the storage box 131 to realize the corresponding horizontal reciprocating movement or vertical reciprocating lifting action.

[0053] Further, the support 12 is a rod-shaped member arranged in the vertical direction, and the lifting rail 121 is correspondingly arranged on the outer wall of the support 12. The rod-shaped member can further reduce the transverse assembly space required by the support 12, and correspondingly optimize the structural adaptability of the support 12 and the lifting rail 121, so that the reciprocating lifting movement of the storage box 131 along the lifting rail 121 is more smooth and flexible.

[0054] In addition, each nozzle 13 is correspondingly arranged at each inflection point at the top and bottom of the scissors mechanism 132. In this way, each nozzle 13 forms two groups of arrangement structures arranged in the horizontal direction in sequence, which can make full use of the existing assembly space of the scissors mechanism 132, and further improve the effective flushing and cleaning area of the accumulated ash cleaning device, thereby improving the overall cleaning efficiency of the accumulated ash cleaning device.

[0055] On the other hand, the water supply assembly includes a water tank 14 containing cleaning water, and a water supply pipe 141 is in communication between the water tank 14 and each nozzle 13. During the accumulated ash flushing and cleaning operation, the cleaning water originally stored in the water tank 14 is transported to each nozzle 13 through the water supply pipe 141, so as to ensure that the cleaning water spraying effect at each nozzle 13 can meet the corresponding accumulated ash flushing and cleaning requirements.

[0056] On this basis, the water supply pipe 141 is provided with a water pump 142 capable of pumping cleaning water from the water tank 14 to the nozzle 13. The use of the water pump 142 to pump the cleaning water in the water tank 14 to each nozzle 13 can effectively ensure that the water supply pressure at each nozzle 13 is constant, so as to ensure the operation requirements of the continuous flushing and cleaning operation of the accumulated ash cleaning device, and ensure that the cleaning water spraying effect at each nozzle 13 remains consistent, avoiding the uneven cleaning of the accumulated ash on the convection heating surface 201 of the boiler equipment at different positions due to the uneven water spraying effect of different nozzles 13, thereby further improving the working efficiency of the accumulated ash cleaning device and optimizing its accumulated ash cleaning effect.

[0057] In addition, the water supply pipe 141 is a flexible pipe. The flexible pipe body structure can further optimize the structural adaptation effect between the water supply pipe 141 and the action components such as the position adjusting mechanism, so that the water supply pipe 141 can adjust the structure state corresponding to the reciprocating movement of the action components such as the position adjusting mechanism and the support 12, avoid the pipe body damage caused by local stress concentration or rigid bending of the water supply pipe 141, ensure the durability of the water supply pipe 141, improve its working condition adaptability, and make the required cleaning water at the nozzle 13 can be continuously and stably supplied.

[0058] Generally, the water supply pipe 141 can be a rubber pipe, a silica gel pipe, or a flexible pipe body made of soft engineering plastic, or a corrugated pipe made of other non-soft materials that can realize local deformation to relieve local stress concentration. In actual application, the staff can adjust and select according to the specific working condition requirements, considering the factors such as the cost of component application. In principle, as long as it can ensure the stable water flow supply between the water tank 14 and each nozzle 13, and meet the actual application needs of the described ash cleaning device.

[0059] In the specific embodiment, the boiler equipment provided by the utility model, including furnace body 20, the top of the furnace body 20 is provided with top furnace wall 21, the middle part of the furnace body 20 is provided with heat exchange pipe 22, the cooperation part of the furnace body 20 and the heat exchange pipe 22 forms convection heating surface 201, the lower part of the convection heating surface 201 is provided with ash bucket 23, and the ash cleaning device is also provided with the ash cleaning device, which is described above. The ash cleaning device of the boiler equipment can efficiently and completely clean the heat exchange pipe 22 at the convection heat exchange surface of the boiler equipment, so as to ensure the heat exchange effect at the convection heat exchange surface and the overall operation efficiency of the boiler equipment.

[0060] The ash or mud with ash washed and cleaned by the ash cleaning device will flow into the ash bucket 23 under the action of gravity, so as to collect the ash cleaned from the convection heating surface 201, and when the ash or mud collected in the ash bucket 23 reaches the carrying limit of the ash bucket 23, the ash bucket 23 can be removed from the furnace body 20, so that the ash or mud accumulated in the ash bucket 23 can be uniformly transported to the corresponding cleaning and transporting equipment or recycling equipment, so as to prevent the ash or mud in the ash bucket 23 from overflowing and causing secondary pollution of the equipment.

[0061] The ash cleaning device provided by the utility model, during operation and use, controls the support to move horizontally along the guide rail to a proper position, then controls the position adjusting mechanism to extend moderately in the horizontal direction, so as to drive the nozzles to move synchronously with the position adjusting mechanism, until the nozzles on the position adjusting mechanism reach the corresponding positions matched with the convection heating surface, then the water supply assembly can supply water to the nozzles, so as to wash the corresponding positions of the convection heating surface of the furnace body by the water flow sprayed by the nozzles. During the washing operation, the support and the position adjusting mechanism can still move moderately in the horizontal direction, so that the nozzles can move synchronously to the positions, such as the gaps between the heat exchange pipes, which are not easy to clean, of the convection heating surface, so as to wash all the positions of the convection heating surface, including the gaps between the heat exchange pipes, thoroughly, so that the ash attached to the convection heating surface can be removed thoroughly by the clean water. After the washing operation is completed, the water supply to the nozzles by the water supply assembly is stopped, and the position adjusting mechanism can be retracted in the horizontal direction at the same time, so that the nozzles can reset synchronously with the position adjusting mechanism, then the support can be controlled to move synchronously with the position adjusting mechanism and the nozzles on the support to the next working position, and the above washing operation process can be repeated, so that the cleaning operation of the ash at the next working position can be completed. The ash cleaning device washes the ash attached to the convection heating surface of the boiler equipment by the water flow, greatly improves the ash cleaning efficiency, and can effectively remove the ash attached to the structure dead angle, such as the gaps between the heat exchange pipes, which is not easy to clean by conventional methods, significantly optimizes the ash cleaning effect of the convection heating surface of the boiler equipment, so that the heat exchange pipes and other functional components of the convection heating surface of the boiler equipment can operate stably and efficiently, and the heat exchange efficiency and the overall operation efficiency of the boiler equipment are also improved.

[0062] The utility model also provides a kind of boiler equipment, and the ash cleaning device thereof can efficiently and thoroughly implement ash cleaning treatment to heat exchange pipe at the convection heating surface of boiler equipment, to ensure the heat exchange effect at the convection heating surface and the overall operation efficiency of boiler equipment.

[0063] The ash cleaning device provided by the utility model and the boiler equipment applied with the ash cleaning device are introduced in detail. The principle and implementation mode of the utility model are described by applying specific examples in this paper. The above description of embodiments is only used to help understand the method and core idea of the utility model. It should be pointed out that, for ordinary skilled persons in the technical field, without departing from the principle of the utility model, the utility model can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the claims of the utility model.

Claims

1. A dust removal device, characterized in that, It includes two guide rails extending horizontally, the two guide rails are aligned and parallel in the vertical direction, and a bracket is provided between the two guide rails. The top and bottom ends of the bracket are slidably disposed on the guide rails respectively. The bracket is linked to a position adjustment mechanism that can reciprocate and extend in the horizontal direction. The position adjustment mechanism is equipped with a plurality of nozzles, and each nozzle is evenly distributed at a distance in the horizontal direction. It also includes a water supply assembly capable of delivering clean water to each of the nozzles.

2. The dust removal device as described in claim 1, characterized in that, The bracket is equipped with a storage box, and the position adjustment mechanism is a scissor mechanism with one end connected to the storage box.

3. The dust removal device as described in claim 2, characterized in that, The support frame is provided with a vertically extending lifting track, and the storage box is slidably mounted on the lifting track.

4. The dust removal device as described in claim 3, characterized in that, It also includes a longitudinal locking device that enables the storage box to be locked on the lifting track.

5. The dust removal device as described in claim 3, characterized in that, The support is a rod-shaped member arranged in a vertical direction, and the lifting track is correspondingly arranged on the outer wall of the support.

6. The dust removal device as described in claim 2, characterized in that, Each of the nozzles is positioned correspondingly at the inflection points at the top and bottom of the scissor mechanism.

7. The dust removal device as described in claim 1, characterized in that, The water supply assembly includes a water tank containing clean water, and a water supply pipe is connected between the water tank and each of the nozzles.

8. The dust removal device as described in claim 7, characterized in that, The water supply pipe is equipped with a water pump that can pump clean water from the water tank to the nozzle.

9. The dust removal device as described in claim 7, characterized in that, The water supply pipe is a flexible hose.

10. A boiler device, comprising a furnace body, a top furnace wall disposed above the furnace body, a heat exchange tube disposed in the middle of the furnace body, a convection heating surface formed at the interface between the furnace body and the heat exchange tube, and an ash hopper disposed below the convection heating surface, characterized in that, It also includes an ash cleaning device that is aligned with the convection heating surface, the ash cleaning device being the same as that described in any one of claims 1 to 9, and the ash cleaning device being detachably mounted on the furnace body.

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