Multifunctional ash removal device for thermal power plant boiler

Abstract

The invention relates to the technical field of boiler ash removal, and discloses a multifunctional ash removal device for a thermal power plant boiler, which comprises a driving mechanism mounted on the outer side of the top of a boiler main body, the driving mechanism comprises a C-shaped fixing block, the C-shaped fixing block is mounted on the outer side of the boiler main body through a bolt, and a transmission mechanism is arranged in the center of the driving mechanism. A dust collecting box used for collecting dust is arranged at the bottom of the boiler body, a cooling assembly is arranged on the outer side of the bottom of the transmission mechanism, a first cleaning assembly used for stripping accumulated dust on the inner wall of the boiler body is arranged on the outer side of the bottom of the transmission mechanism, and a second cleaning assembly with the adjustable outer diameter is arranged at the bottom of the transmission mechanism. When the transmission mechanism operates, the first cleaning assembly and the second cleaning assembly are driven to clean the inner wall of the boiler body, and in the operation process, the cooling assembly sprays water to wet accumulated dust.

Description

Technical Field

[0001] The invention relates to the technical field of boiler ash cleaning, in particular to a multifunctional ash cleaning device for a boiler in a thermal power plant. Background Art

[0002] With the continuous development of industrial production, thermal power plants, as one of the important energy supply facilities, are facing many challenges while ensuring a stable supply of electricity. In particular, the ash accumulation problem after long-term operation of boilers has seriously affected their working efficiency and service life.

[0003] The main method for removing ash from existing boilers is through physical blowing when the boiler stops running. The physical blowing method uses high-pressure air or steam to clean the ash on the furnace wall. However, this method does not have sufficient impact on the ash at the bottom of the boiler, and the stubborn ash on the inner wall of the boiler is difficult to remove by simple blowing, so the cleaning effect is limited.

[0004] To this end, the present invention provides a multifunctional ash cleaning device for a thermal power plant boiler. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The present invention provides a multifunctional dust cleaning device for a thermal power plant boiler, comprising a driving mechanism installed on the outer side of the top of a boiler body, the driving mechanism comprising a C-shaped fixing block, the C-shaped fixing block being installed on the outer side of the boiler body by bolts, a transmission mechanism being arranged at the center of the driving mechanism, a dust collecting box for collecting dust being arranged at the bottom of the boiler body, a cooling component being arranged at the outer side of the bottom of the transmission mechanism, a first cleaning component for stripping dust accumulated on the inner wall of the boiler body being arranged at the outer side of the bottom of the transmission mechanism, a second cleaning component with an adjustable outer diameter being arranged at the bottom of the transmission mechanism, the transmission mechanism driving the first cleaning component and the second cleaning component to clean the inner wall of the boiler body when in operation, and the cooling component spraying water to wet the accumulated dust during operation.

[0007] Preferably, the driving mechanism includes a mounting base plate, a servo motor is fixedly mounted on the top of the mounting base plate, a worm gear is fixedly connected to the output shaft of the servo motor, the outer side of the mounting base plate is fixedly connected to a C-shaped fixing block on all four sides, and the transmission mechanism includes a worm, and the outer threaded protrusion of the worm is meshed with the outer teeth of the worm gear.

[0008] Preferably, a movable hole that matches the clearance of the outer side of the worm is opened in the center of the mounting base plate, the bottom of the worm is fixedly connected to a fixed shaft, the top of the worm is rotatably connected to a fixed top plate, telescopic rods are arranged around the bottom of the fixed top plate, and the bottom of the telescopic rod of the fixed top plate is fixedly connected to the top of the C-shaped fixed block.

[0009] Preferably, the cooling assembly includes a water tank, the center of which is fixedly connected to the outer side of the fixed axis, the water tank is a hollow structure, and a water inlet is provided on the top of the water tank, and high-pressure nozzles are fixedly connected around the bottom of the water tank, and the bottom of the high-pressure nozzles is inclined toward the side away from the center of the water tank.

[0010] Preferably, the first cleaning assembly includes a mounting ring, the inner side of the mounting ring is fixedly connected to the outer side of the fixed shaft, the outer side of the mounting ring is fixedly connected to a cross mounting frame, and the first cleaning brush assembly is fixedly connected to the side of the mounting ring cross mounting frame away from the mounting ring.

[0011] Preferably, the first cleaning brush assembly includes an annular fixing seat, a movable ring groove is provided in the middle of the outer side of the annular fixing seat, a movable groove is provided on the inner side of the movable ring groove, the movable groove is L-shaped, a spring is fixedly connected to the inner wall of the movable groove close to the mounting ring, a limiting ring is fixedly connected to the side of the spring away from the mounting ring, a fixing ring is fixedly connected to the outer side of the limiting ring, and a cleaning brush body is fixedly connected to the outer side of the fixing ring.

[0012] Preferably, the second cleaning component includes an adjusting mechanism and a cleaning mechanism, the adjusting structure of the second cleaning component adjusts the distance between the cleaning mechanisms according to the change of the inner diameter of the bottom of the inner wall of the boiler body, the cleaning mechanism of the second cleaning component includes a second cleaning brush assembly, and the internal structure of the second cleaning brush assembly is the same as the internal structure of the first cleaning brush assembly.

[0013] Preferably, the adjustment mechanism of the second cleaning component includes a driving motor, an annular adjustment disk is fixedly connected to the top of the outer side of the driving motor output shaft, arc grooves are provided around the top of the annular adjustment disk, an annular limit disk is rotatably connected to the bottom of the outer side of the driving motor output shaft, limiting grooves are provided around the top of the annular limit disk, a limiting rod is clamped on the inner side of the limiting groove, a mounting bracket is fixedly connected to the side of the limiting rod away from the annular adjustment disk, and the side of the limiting rod mounting bracket away from the annular adjustment disk is fixedly connected to the second cleaning brush assembly.

[0014] Preferably, the top of the drive motor is fixedly connected to the bottom of the fixed shaft, the output shaft of the drive motor is rotatably connected to the center of the annular limit plate through a bearing, and the height of the middle part of the limit rod is the same as the sum of the heights of the annular adjustment plate and the annular limit plate.

[0015] The beneficial effects of the present invention are as follows: a multifunctional dust cleaning device for a thermal power plant boiler described in the present invention is provided with a first cleaning brush assembly. When the dust accumulation at a part of the inner wall of the boiler is thick and has a certain hardness, the brush head on the outer side of the cleaning brush body will be squeezed and bent continuously to squeeze the inner concave of the cleaning brush body mounting base, thereby squeezing the spring. Since the first cleaning brush assembly is in a rotating state, the cleaning brush body that has not been in contact with the dust accumulation here will pop outwards under the action of the spring's own performance, thereby shoveling the dust accumulation here. Since the bristles on the outer side of the cleaning brush body are provided with multiple layers, the dust accumulation here can be repeatedly shoveled under the action of the spring, thereby further improving the dust cleaning effect.

[0016] The multifunctional dust cleaning device for a thermal power plant boiler described in the present invention is provided with a second cleaning component. Since the inner diameter of the bottom of a part of the boiler body gradually becomes smaller, when moving to the bottom, the adjustment structure of the second cleaning component adjusts the distance between the cleaning mechanisms according to the change in the inner diameter of the bottom of the inner wall of the boiler body to adapt to the cleaning operation of the small inner diameter.

[0017] The multifunctional dust cleaning device for a thermal power plant boiler described in the present invention is provided with a cooling component, and the high-pressure nozzle is started at a fixed time to spray water on the inner wall of the boiler body. On the one hand, it cools down and protects the brush head, and on the other hand, it moistens the accumulated dust and reduces its adhesion, which is convenient for subsequent cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the transmission mechanism and cooling assembly in the present invention; Figure 3 It is a schematic diagram of the structure of the cooling assembly in the present invention; Figure 4 is a schematic structural diagram of the first cleaning component in the present invention; Figure 5 It is a schematic structural diagram of the second cleaning component in the present invention.

[0019] Description of reference numerals: 100. Boiler body; 2. Driving mechanism; 201. Worm gear; 202. Servo motor; 203. C-type fixing block; 204. Mounting base plate; 3. Transmission mechanism; 301. Worm; 302. Fixed shaft; 303. Fixed top plate; 4. Cooling assembly; 401. Water tank; 402. High-pressure nozzle; 403. Water inlet; 5. First cleaning assembly; 501. Mounting ring; 502. First cleaning brush assembly; 5021. Annular fixing seat; 5022. Movable groove; 5023. Limiting ring; 5024. Spring; 5025. Fixed ring; 5026. Cleaning brush body; 6. Second cleaning assembly; 601. Driving motor; 602. Annular adjusting disk; 603. Annular limiting disk; 604. Second cleaning brush assembly; 605. Limiting rod; 606. Arc groove; 607. Limiting groove; 7. Dust collecting box. DETAILED DESCRIPTION

[0020] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0021] like Figures 1 to 5 As shown in the embodiment of the present invention, a multifunctional ash cleaning device for a thermal power plant boiler is provided. Figure 1 , Figure 2 , including a driving mechanism 2 installed on the outer side of the top of the boiler body 100, the driving mechanism 2 includes a C-shaped fixing block 203, the C-shaped fixing block 203 is installed on the outer side of the boiler body 100 by bolts, a transmission mechanism 3 is arranged at the center of the driving mechanism 2, a dust collecting box 7 for collecting ash is arranged at the bottom of the boiler body 100, a cooling component 4 is arranged on the outer side of the bottom of the transmission mechanism 3, a first cleaning component 5 for stripping ash accumulated on the inner wall of the boiler body 100 is arranged on the outer side of the bottom of the transmission mechanism 3, and a second cleaning component 6 with an adjustable outer diameter is arranged at the bottom of the transmission mechanism 3. When the transmission mechanism 3 is in operation, it drives the first cleaning component 5 and the second cleaning component 6 to clean the inner wall of the boiler body 100, and the cooling component 4 sprays water to wet the ash during operation.

[0022] Specifically, during the operation of the boiler body 100, this device is disassembled to avoid damage to the device due to the high temperature inside the boiler body 100. When the boiler body 100 stops running, the top cover and the bottom cover of the boiler body 100 are disassembled, and the C-shaped fixing block 203 is installed on the outside of the boiler body 100 by bolts. The dust box 7 is placed at the bottom of the boiler body 100 and the cleaning operation is started.

[0023] Please refer to Figure 1 , Figure 2 The driving mechanism 2 includes a mounting base plate 204, a servo motor 202 is fixedly mounted on the top of the mounting base plate 204, a worm gear 201 is fixedly connected to the output shaft of the servo motor 202, and the outer sides of the mounting base plate 204 are fixedly connected to the C-shaped fixing block 203. The transmission mechanism 3 includes a worm 301, and the outer threaded protrusion of the worm 301 is meshed with the outer teeth of the worm gear 201.

[0024] Please refer to Figure 1 , Figure 2 A movable hole is opened in the center of the mounting base plate 204 to match the clearance of the outer side of the worm 301. The bottom of the worm 301 is fixedly connected to the fixed shaft 302. The top of the worm 301 is rotatably connected to the fixed top plate 303. Telescopic rods are arranged around the bottom of the fixed top plate 303. The bottom of the telescopic rod of the fixed top plate 303 is fixedly connected to the top of the C-shaped fixed block 203.

[0025] Specifically, the fixed top plate 303 is rotatably connected to the worm 301 through a bearing, and the transmission mechanism 3 is fixed to the top of the boiler body 100 through the fixed top plate 303. The worm wheel 201 is started to drive the worm 301 to rotate and move downward. When the worm 301 is driven by the worm wheel 201 to move downward, the worm 301 can pass through the movable hole of the installation bottom plate 204 normally, and drive the fixed top plate 303 to move downward, and the height of the telescopic rod is shortened.

[0026] Please refer to Figure 2 , Figure 3 The cooling component 4 includes a water tank 401, the center of which is fixedly connected to the outer side of the fixed shaft 302. The water tank 401 is a hollow structure, and a water inlet 403 is provided on the top of the water tank 401. High-pressure nozzles 402 are fixedly connected around the bottom of the water tank 401, and the bottom of the high-pressure nozzle 402 is inclined away from the center of the water tank 401.

[0027] Specifically, when the worm 301 rotates and moves downward, it drives the fixed shaft 302 to rotate and move downward, so that the cooling component 4 also rotates and moves downward with the fixed shaft 302; the water tank 401, the high-pressure nozzle 402 and the water injection port 403 are interconnected. When this equipment is not in operation, the water injection port 403 injects water through an external water pipe to replenish the water in the water tank 401. When this equipment is in operation, the water injection port 403 is blocked by a rubber plug to prevent water from overflowing from the water injection port 403 when the equipment is in operation; the high-pressure nozzle 402 is tilted and sprays water on the inner wall of the boiler body 100 at regular intervals. On the one hand, it cools down and protects the brush head, and on the other hand, it moistens the accumulated ash and reduces its adhesion to facilitate subsequent cleaning.

[0028] Please refer to Figure 3 , Figure 4The first cleaning assembly 5 includes a mounting ring 501, the inner side of the mounting ring 501 is fixedly connected to the outer side of the fixed shaft 302, the outer side of the mounting ring 501 is fixedly connected to a cross mounting frame, and the first cleaning brush assembly 502 is fixedly connected to the side of the cross mounting frame of the mounting ring 501 away from the mounting ring 501.

[0029] Specifically, when the worm 301 rotates and moves downward, it drives the fixed shaft 302 to rotate and move downward, so that the mounting ring 501 also rotates and moves downward along with the fixed shaft 302, and then the mounting ring 501 drives the first cleaning brush assembly 502 to rotate and move downward together.

[0030] Please refer to Figure 4 The first cleaning brush assembly 502 includes an annular fixing seat 5021, a movable annular groove is provided in the middle of the outer side of the annular fixing seat 5021, a movable groove 5022 is provided on the inner side of the movable annular groove, the movable groove 5022 is L-shaped, and a spring 5024 is fixedly connected to the inner wall of the movable groove 5022 close to the mounting ring 501, and a limiting ring 5023 is fixedly connected to the side of the spring 5024 away from the mounting ring 501, a fixing ring 5025 is fixedly connected to the outer side of the limiting ring 5023, and a cleaning brush body 5026 is fixedly connected to the outer side of the fixing ring 5025.

[0031] Specifically, the outer side of the limiting ring 5023 is fixedly connected to the bottom of the inner side of the cleaning brush body 5026, such as Figure 4 As shown, the cleaning brush body 5026 is composed of outer bristles and an inner mounting base. Since the outer diameter of the circle formed by the outermost side of the cleaning brush body 5026 is slightly larger than the inner diameter of the boiler body 100, and the outer bristles of the cleaning brush body 5026 are flexible brush heads, the cleaning brush body 5026 moves downward as the mounting ring 501 rotates. When the outer bristles of the cleaning brush body 5026 rotate and contact with the inner wall of the boiler body 100, a certain inclination angle is formed, which increases the friction force and peels off the accumulated dust from the inner wall. In some positions of the inner wall of the boiler, the accumulated dust is thicker and has a certain When the hardness is high, the brush head on the outside of the cleaning brush body 5026 will be squeezed and continuously bent until the installation base of the cleaning brush body 5026 is squeezed into the concave state, thereby squeezing the spring 5024. Since the first cleaning brush assembly 502 is in a rotating state, the cleaning brush body 5026 that has not been in contact with the dust accumulated here will pop out under the elastic action of the spring 5024, thereby shoveling the dust accumulated here. Since the bristles on the outside of the cleaning brush body 5026 are provided with multiple layers, the dust accumulated here can be repeatedly shoveled under the action of the spring 5024, thereby further improving the cleaning effect.

[0032] Please refer to Figure 4 , Figure 5The second cleaning component 6 includes an adjusting mechanism and a cleaning mechanism. The adjusting structure in the second cleaning component 6 adjusts the distance between the cleaning mechanisms according to the change of the inner diameter of the bottom of the inner wall of the boiler body 100. The cleaning mechanism of the second cleaning component 6 includes a second cleaning brush assembly 604. The internal structure of the second cleaning brush assembly 604 is the same as the internal structure of the first cleaning brush assembly 502.

[0033] Specifically, during the descent process, the cleaning mechanism of the second cleaning component 6 performs a priority process. If dust is accumulated in thicker and harder places, the dust can be pre-processed to improve the cleaning effect.

[0034] Please refer to Figure 5 The adjustment mechanism of the second cleaning component 6 includes a driving motor 601, and the top of the outer side of the output shaft of the driving motor 601 is fixedly connected to a ring-shaped adjustment disk 602, and the top of the ring-shaped adjustment disk 602 is provided with arc grooves 606, and the bottom of the outer side of the output shaft of the driving motor 601 is rotatably connected to an annular limit disk 603, and the top of the annular limit disk 603 is provided with limiting grooves 607, and the inner side of the limiting groove 607 is clamped with a limiting rod 605, and the side of the limiting rod 605 away from the annular adjustment disk 602 is fixedly connected to a mounting bracket, and the side of the limiting rod 605 mounting bracket away from the annular adjustment disk 602 is fixedly connected to the second cleaning brush assembly 604.

[0035] Specifically, the limiting rod 605 is in an I-shape, and the outer diameter of the middle part of the limiting rod 605, the width of the arc groove 606 and the width of the limiting groove 607 are all clearance-matched, that is, when the driving motor 601 drives the annular adjustment disk 602 to rotate, the limiting rod 605 can move inside the arc groove 606 and the limiting groove 607.

[0036] Please refer to Figure 3 , Figure 5 The top of the driving motor 601 is fixedly connected to the bottom of the fixed shaft 302, the output shaft of the driving motor 601 is rotatably connected to the center of the annular limiting disk 603 through a bearing, and the height of the middle part of the limiting rod 605 is the same as the sum of the heights of the annular adjusting disk 602 and the annular limiting disk 603.

[0037] Specifically, to avoid entanglement of the wiring cables, the wiring cables of the drive motor 601 use a cable rotary joint. When the drive motor 601 itself rotates, the wiring cables do not rotate, and the wiring cables are built into the inner side of the fixed shaft 302, and the wiring cables are passed out from the top of the fixed shaft 302 and the top of the worm 301.

[0038] Specifically, when the worm 301 rotates and moves downward, it drives the fixed shaft 302 to rotate and move downward, so that the second cleaning component 6 also rotates and moves downward with the fixed shaft 302. When the driving motor 601 drives the annular adjustment disk 602 to rotate, the annular limit disk 603 remains stationary. Therefore, when the annular adjustment disk 602 rotates and drives the arc groove 606 to move, the position of the limit groove 607 remains unchanged, so that the overlapping position of the arc groove 606 and the limit groove 607 changes, and then drives the limit rod 605 to move along the overlapping position of the arc groove 606 and the limit groove 607, thereby adjusting the distance between the second cleaning brush components 604 to adapt to the cleaning work of boiler bodies 100 with different inner diameters.

[0039] How it works When cleaning the boiler body 100, the bottom opening of the boiler body 100 needs to be opened so that the cleaned ash can fall along the boiler body 100 to the inside of the dust collecting box 7, and then the worm gear 201 is started to drive the worm 301 to rotate and move downward. When the worm 301 is driven by the worm gear 201, it rotates and moves downward, thereby driving the fixed shaft 302 to rotate and move downward, and the cooling assembly 4, the first cleaning assembly 5 and the second cleaning assembly 6 are driven to rotate and move downward through the fixed shaft 302; During the downward rotation, the first cleaning assembly 5 and the second cleaning assembly 6 clean the dust on the inner wall of the boiler body 100. The cleaning mechanism of the second cleaning assembly 6 performs a priority treatment on the inner wall of the boiler body 100. Since the inner diameter of the bottom of part of the boiler body 100 gradually decreases, the spacing between the second cleaning brush assemblies 604 needs to be adjusted when moving to the bottom: The driving motor 601 is started to drive the annular adjustment disk 602 to rotate and the annular limiting disk 603 to remain stationary. The rotation of the annular adjustment disk 602 drives the arc groove 606 to move, and the position of the limiting groove 607 remains unchanged, so that the overlapping position of the arc groove 606 and the limiting groove 607 moves toward the center of the annular adjustment disk 602, and then drives the limiting rod 605 to move along the movement of the overlapping position of the arc groove 606 and the limiting groove 607, so that the distance between the second cleaning brush assembly 604 is reduced; During the cleaning process, the outer bristles of the cleaning brush body 5026 will form a certain tilt angle when rotating and contacting the inner wall of the boiler body 100, thereby increasing the friction and peeling off the accumulated dust from the inner wall. When the accumulated dust is thick and has a certain hardness at some positions on the inner wall of the boiler, the outer brush head of the cleaning brush body 5026 will be squeezed and continuously bent until the mounting base of the cleaning brush body 5026 is squeezed and concave, thereby squeezing the spring 5024. Since the first cleaning brush assembly 502 is in a rotating state, the cleaning brush body 5026 that is not in contact with the accumulated dust here will pop outwards under the action of the spring 5024 itself, thereby shoveling the accumulated dust here. Since the outer bristles of the cleaning brush body 5026 are provided with multiple layers, the accumulated dust here can be repeatedly shoveled under the action of the spring 5024. During the cleaning process, the high-pressure nozzle 402 is started at a fixed time to spray water on the inner wall of the boiler body 100, which can cool down and protect the brush head on the one hand, and moisten the accumulated dust on the other hand to reduce its adhesion and facilitate subsequent cleaning.

[0040] An example of the present specific implementation mode is described above, but the present embodiment is not limited to the above-mentioned specific implementation mode, which is merely illustrative and not restrictive. A person skilled in the art may make many forms inspired by the present embodiment, all of which are protected by the present embodiment.

Claims

1. A multifunctional ash cleaning device for a thermal power plant boiler, characterized in that: The invention comprises a driving mechanism (2) installed on the outer side of the top of a boiler body (100), the driving mechanism (2) comprising a C-shaped fixing block (203), the C-shaped fixing block (203) being installed on the outer side of the boiler body (100) by means of bolts, a transmission mechanism (3) being arranged at the center of the driving mechanism (2), a dust collecting box (7) for collecting ash being arranged at the bottom of the boiler body (100), a cooling component (4) being arranged on the outer side of the bottom of the transmission mechanism (3), a first cleaning component (5) for stripping ash accumulated on the inner wall of the boiler body (100) being arranged at the outer side of the bottom of the transmission mechanism (3), a second cleaning component (6) with an adjustable outer diameter being arranged at the bottom of the transmission mechanism (3), the transmission mechanism (3) driving the first cleaning component (5) and the second cleaning component (6) to clean the inner wall of the boiler body (100) when in operation, and the cooling component (4) spraying water to moisten the ash during operation.

2. The multifunctional ash cleaning device for a thermal power plant boiler according to claim 1, characterized in that: The driving mechanism (2) comprises a mounting base plate (204), a servo motor (202) being fixedly mounted on the top of the mounting base plate (204), an output shaft of the servo motor (202) being fixedly connected to a worm wheel (201), the outer sides of the mounting base plate (204) being fixedly connected to C-shaped fixing blocks (203), and the transmission mechanism (3) comprises a worm (301), a threaded protrusion on the outer side of the worm (301) being meshed with teeth on the outer side of the worm wheel (201).

3. The multifunctional ash cleaning device for a thermal power plant boiler according to claim 2, characterized in that: A movable hole is provided at the center of the mounting base plate (204) and is clearance-matched with the outer side of the worm (301); the bottom of the worm (301) is fixedly connected to a fixed shaft (302); the top of the worm (301) is rotatably connected to a fixed top plate (303); telescopic rods are provided around the bottom of the fixed top plate (303); the bottom of the telescopic rod of the fixed top plate (303) is fixedly connected to the top of the C-shaped fixing block (203).

4. The multifunctional ash cleaning device for a thermal power plant boiler according to claim 3 is characterized in that: The cooling assembly (4) comprises a water tank (401), the center of the water tank (401) is fixedly connected to the outer side of the fixed shaft (302), the water tank (401) is a hollow structure, and a water inlet (403) is provided at the top of the water tank (401), and high-pressure nozzles (402) are fixedly connected around the bottom of the water tank (401), and the bottom of the high-pressure nozzle (402) is inclined toward a side away from the center of the water tank (401).

5. The multifunctional ash cleaning device for a thermal power plant boiler according to claim 3, characterized in that: The first cleaning assembly (5) comprises a mounting ring (501), the inner side of the mounting ring (501) being fixedly connected to the outer side of the fixed shaft (302), the outer side of the mounting ring (501) being fixedly connected to a cross mounting frame, and the side of the cross mounting frame of the mounting ring (501) away from the mounting ring (501) being fixedly connected to a first cleaning brush assembly (502).

6. The multifunctional ash cleaning device for a thermal power plant boiler according to claim 5, characterized in that: The first cleaning brush assembly (502) comprises an annular fixing seat (5021), a movable annular groove is provided in the middle of the outer side of the annular fixing seat (5021), a movable groove (5022) is provided on the inner side of the movable annular groove, the movable groove (5022) is L-shaped, a spring (5024) is fixedly connected to the inner wall of the movable groove (5022) close to the mounting ring (501), a limiting ring (5023) is fixedly connected to the side of the spring (5024) away from the mounting ring (501), a fixing ring (5025) is fixedly connected to the outer side of the limiting ring (5023), and a cleaning brush body (5026) is fixedly connected to the outer side of the fixing ring (5025).

7. The multifunctional ash cleaning device for a thermal power plant boiler according to claim 6, characterized in that: The second cleaning assembly (6) comprises an adjusting mechanism and a cleaning mechanism. The adjusting structure of the second cleaning assembly (6) adjusts the distance between the cleaning mechanisms according to the change of the inner diameter of the bottom of the inner wall of the boiler body (100). The cleaning mechanism of the second cleaning assembly (6) comprises a second cleaning brush assembly (604). The internal structure of the second cleaning brush assembly (604) is the same as the internal structure of the first cleaning brush assembly (502).

8. The multifunctional ash cleaning device for a thermal power plant boiler according to claim 7, characterized in that: The adjustment mechanism of the second cleaning component (6) comprises a driving motor (601), the top of the outer side of the output shaft of the driving motor (601) is fixedly connected to an annular adjustment disk (602), the top of the annular adjustment disk (602) is provided with arc grooves (606) around, the bottom of the outer side of the output shaft of the driving motor (601) is rotatably connected to an annular limit disk (603), the top of the annular limit disk (603) is provided with limit grooves (607) around, the inner side of the limit groove (607) is clamped with a limit rod (605), the side of the limit rod (605) away from the annular adjustment disk (602) is fixedly connected to a mounting frame, and the side of the limit rod (605) mounting frame away from the annular adjustment disk (602) is fixedly connected to the second cleaning brush component (604).

9. The multifunctional ash cleaning device for a thermal power plant boiler according to claim 8, characterized in that: The top of the drive motor (601) is fixedly connected to the bottom of the fixed shaft (302), the output shaft of the drive motor (601) is rotatably connected to the center of the annular limiting disk (603) via a bearing, and the height of the middle of the limiting rod (605) is the same as the sum of the heights of the annular adjustment disk (602) and the annular limiting disk (603).

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