Waste heat boiler steel ball ash removal system

Abstract

The utility model discloses a steel ball deashing system of a waste heat boiler, which belongs to the technical field of waste heat boilers and comprises a waste heat boiler body and a steel ball deashing device, and the steel ball deashing device comprises steel balls, a material component, a driving component and a traction component. The driving assembly is used for driving the traction assembly to operate, so that the traction assembly drives the material assembly to circularly move around the exterior of the waste heat boiler body in the vertical direction; a steel ball scattering assembly is arranged at the top in the waste heat boiler body. The material assembly is used for collecting the steel balls and releasing the steel balls into the steel ball spreading assembly; the steel ball scattering assembly is used for scattering steel balls into the waste heat boiler body. The steel ball deashing system of the waste heat boiler can effectively solve the problems that in the prior art, deashing on a heating surface pipeline is not uniform, and steel balls at the bottom of a hopper can not be dumped, so that the deashing effect is not ideal.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste heat boilers. Specifically, it relates to a steel ball soot cleaning system for waste heat boilers. Background Art

[0002] With the increasing efforts in energy conservation and emission reduction, waste heat resources have been increasingly emphasized by more and more people due to their advantages such as being better recycled, reducing costs, saving energy, reducing air pollution, and improving production efficiency. However, with the continuous improvement of the parameter performance of waste heat boilers, the requirements for the heating surface are getting higher and higher. But the heating surface of waste heat boilers often has a significant reduction in heat transfer efficiency due to severe ash accumulation. Currently, the ash cleaning methods for the heating surface of waste heat boilers mainly include the following: acoustic soot cleaning, mechanical vibration soot cleaning, mechanical steel brush soot cleaning, compressed air or high-pressure steam soot cleaning, blasting, and shock wave soot cleaning. However, there are problems such as uneven ash cleaning effect on each heating surface, many blind spots, easy damage to the heating surface, and failure to achieve effective ash cleaning effect.

[0003] Currently, there are already ash cleaning solutions in the prior art to solve the above technical problems, such as the Chinese invention with the document number CN101701775A. This invention uses a steel ball spreading device on the furnace top to spread steel balls into the boiler. Through the action of gravity, the steel balls continuously fall. During the falling process, the steel balls continuously strike the ash accumulated on the heating surface, thereby achieving the effect of removing ash. The falling steel balls are collected in the steel ball separation and collection device below the ash hopper at the furnace bottom and are transported from the furnace bottom to the steel ball spreading device above the furnace top through a steel ball mechanical transportation device. However, this invention has the following deficiencies: the steel ball spreading device has only one spreading point, and the spread steel balls are concentrated in the middle of the boiler, unable to effectively clean the ash at the edges of the heating surface, resulting in uneven ash cleaning effect. When the steel ball transportation hopper in the steel ball mechanical transportation device unloads, the steel balls in the hopper cannot be effectively emptied completely, and there are always a small amount of steel balls at the bottom of the hopper, which is prone to causing the steel balls at the bottom of the hopper to stick to ash and form lumps.

[0004] Therefore, there is an urgent need for a steel ball soot cleaning system for waste heat boilers to solve the problems of uneven ash cleaning of the heating surface pipes and the unsatisfactory ash cleaning effect caused by the inability to dump the steel balls at the bottom of the hopper. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a steel ball soot cleaning system for waste heat boilers aiming at the above deficiencies to solve the problems of uneven ash cleaning of the heating surface pipes in the existing waste heat boilers and the unsatisfactory ash cleaning effect caused by the inability to dump the steel balls at the bottom of the hopper. To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A steel ball dust cleaning system for a waste heat boiler, comprising a waste heat boiler body and a steel ball dust cleaning device. The steel ball dust cleaning device includes steel balls, a material component, a driving component and a traction component; the driving component is used to drive the traction component to operate, so that the traction component drives the material component to circulate externally around the waste heat boiler body in the vertical direction; a steel ball spreading component is provided at the top inside the waste heat boiler body; the material component is used to collect the steel balls and release the steel balls into the steel ball spreading component; the steel ball spreading component is used to spread the steel balls into the waste heat boiler body.

[0007] Further, the traction component includes a guide rail and a traction chain; the guide rail surrounds the outside of the waste heat boiler body in the vertical direction; the traction chain includes inner chain plates, outer chain plates, connecting shafts and bushings of the inner and outer chain plates; the bushings are rollingly connected to the guide rail; guide wheels are provided at the top corners of the guide rail; the traction chain realizes circular motion along the guide rail outside the waste heat boiler body through the guide wheels.

[0008] Further, the driving component includes a reduction motor, a sprocket wheel and a transmission sprocket; the sprocket wheel and the transmission sprocket are arranged on the same main shaft; the output shaft of the reduction motor is matched with the sprocket wheel through a chain, so that the reduction motor transmits power to the transmission sprocket through the sprocket wheel; the transmission sprocket is matched with the traction chain to realize power transmission.

[0009] Further, the material component includes a hopper arranged on the traction chain; a first gate and a first proximity switch are provided at the bottom of the hopper; the first proximity switch is used to receive signals to control the opening and closing of the first gate.

[0010] Further, the steel ball spreading component includes a collecting pipe, a plurality of dispersing pipes communicated with the bottom of the collecting pipe, a wedge-shaped collecting hopper arranged at the bottom of the dispersing pipe, a conveying pipe arranged at the bottom of the wedge-shaped collecting hopper, and a spherical protrusion arranged at the bottom of the conveying pipe; the dispersing pipes are uniformly arranged around the collecting pipe; the hopper can move along the guide rail above the collecting pipe.

[0011] Further, a manual plug valve is provided at the bottom outlet of the waste heat boiler body; a shaftless screw conveyor is connected to the bottom of the manual plug valve; a second gate and a second proximity switch are provided at the bottom of the shaftless screw conveyor; the second proximity switch is used to receive signals to control the opening and closing of the second gate; the hopper can move along the guide rail below the second gate.

[0012] Further, a plurality of staggered heating surface pipes are arranged inside the waste heat boiler body, and the horizontal gap between adjacent two heating surface pipes is smaller than the diameter of the steel balls.

[0013] Further, a tensioning assembly for stabilizing the traction chain is provided on the guide wheel; the tensioning assembly includes a lever with a fulcrum provided on the guide wheel and a heavy object provided at the end of the lever; the heavy object generates a moment on the fulcrum to tension the traction chain.

[0014] Further, guard rails are provided at both sides of the waste heat boiler body where the guide rails are located.

[0015] Further, a controller is further included; the controller is electrically connected to the first proximity switch, the second proximity switch, the first gate, the second gate, the reduction motor, and the shaftless screw conveyor respectively

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1. The steel ball spreading assembly of the present utility model has multiple spreading points, and can spread evenly into the boiler, so that the ash accumulation on each heating surface pipe in the boiler can be evenly removed, and there will be no cleaning blind area;

[0018] 2. The steel ball spreading assembly of the present utility model is provided with spherical protrusions, which can make the steel balls move in all directions, improve the coverage range of the steel ball dropping, and improve the ash cleaning efficiency;

[0019] 3. The bottom of the hopper of the present utility model is provided with a first gate and a proximity switch. Through the control of the controller, it can be ensured that when the first gate is opened, all the steel balls can enter the steel ball spreading assembly by their own gravity for ash cleaning, improving the ash cleaning efficiency;

[0020] 4. The present utility model ensures that each steel ball can smoothly complete ash cleaning and then fall to the bottom of the waste heat boiler by arranging the layout of the heating surface pipes, the horizontal gap between adjacent heating surface pipes, and the size of the steel ball diameter, completing the collection of the steel balls. Description of the Drawings

[0021] Figure 1 is the schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 is the schematic diagram of the traction assembly of the present utility model;

[0023] Figure 3 is the schematic diagram of the structure of the steel ball spreading assembly of the present utility model

[0024] Figure 4 is the schematic diagram of the layout of the heating surface pipes of the present utility model;

[0025] Figure 5 is the schematic diagram of the drive assembly of the present utility model;

[0026] Figure 6 is the schematic diagram of the structure of the cooperation between the guide rail and the traction chain of the present utility model;

[0027] Figure 7 Schematic diagram of the hopper of the present utility model;

[0028] In the attached drawings: 1 - waste heat boiler body, 3 - steel balls, 4 - steel ball spreading assembly, 5 - traction chain, 6 - inner chain plate, 7 - outer chain plate, 8 - main shaft, 9 - bushing, 10 - guide wheel, 11 - reduction motor, 12 - sprocket, 13 - drive sprocket, 14 - hopper, 15 - first gate, 16 - first proximity switch, 17 - collection pipe, 18 - dispersion pipe, 19 - wedge-shaped collection hopper, 20 - conveying pipe, 21 - manual plug valve, 22 - shaftless screw conveyor, 23 - second gate, 24 - second proximity switch, 25 - heating surface pipe, 26 - lever, 27 - heavy object, 28 - spherical protrusion. Specific embodiments

[0029] The present utility model will be further described in detail below in conjunction with the attached drawings and specific embodiments, but the present utility model is not limited to the following embodiments.

[0030] Embodiment 1:

[0031] See the attached Figures 1 to 7。A steel ball soot cleaning system for a waste heat boiler includes a waste heat boiler body 1 and a steel ball soot cleaning device. The steel ball soot cleaning device includes steel balls 3, a material component, a driving component, and a traction component. The driving component is used to drive the traction component to operate, so that the traction component drives the material component to move in a circular motion around the outside of the waste heat boiler body 1 in the vertical direction. A steel ball spreading component 4 is provided at the top inside the waste heat boiler body 1. The material component is used to collect the steel balls 3 and release the steel balls 3 into the steel ball spreading component 4. The steel ball spreading component 4 is used to spread the steel balls 3 into the waste heat boiler body 1. As can be seen from the above structure, the waste heat boiler body 1 is composed of an inlet flue, heating surface pipes, a flue gas passage, an outlet flue, a dust hopper, etc. The steel ball soot cleaning device is composed of steel balls 3, a material component, a driving component, and a traction component. The material component is arranged on the traction component. Through the power transmission of the driving component, the traction component can drive the material component to move. The traction component includes a guide rail surrounding the outside of the waste heat boiler body 1. The position of the guide rail passes above the top of the waste heat boiler body 1 and below the bottom dust hopper. The traction component drives the material component to move in a circular motion on the guide rail. The material component collects the steel balls 3. The steel ball spreading component 4 is arranged at the top of the waste heat boiler body 1 and penetrates through the top of the waste heat boiler body 1. The guide rail is above it. After the material component collects the steel balls 3, the driving component drives the traction component to operate, and then drives the material component to move in a circular motion on the guide rail. When it moves above the steel ball spreading component 4, the material component unloads the steel balls 3 into the steel ball spreading component 4. Then the steel balls 3 are spread into the waste heat boiler body 1 by the steel ball spreading component 4 to strike and vibrate the heating surface pipes for soot cleaning, so that the dust on the heating surface pipes falls off due to vibration. The steel ball spreading component 4 can convey the steel balls 3 in various directions inside the waste heat boiler body 1, and can comprehensively and effectively complete the soot cleaning of each heating surface pipe, ensuring that the waste heat boiler can work well. Subsequently, the steel balls 3 finally fall into the dust hopper at the bottom of the waste heat boiler body 1 due to their own gravity. By arranging multiple material components on the traction component, it can be ensured that there are material components on the guide rail above the steel ball spreading component 4 and on the guide rail below the bottom dust hopper of the waste heat boiler body 1 at the same time. The steel balls 3 fall into the material component through the dust hopper, and the traction component continues to drive the material component to move on the guide rail to continue the next cycle. A steel ball soot cleaning system for a waste heat boiler of the present utility model can solve the problem of uneven soot cleaning of the heating surface pipes in the existing waste heat boilers.

[0032] Embodiment 2:

[0033] See appendix Figures 1 to 7。Based on Embodiment 1, the traction assembly includes a guide rail and a traction chain 5; the guide rail is vertically arranged around the outside of the waste heat boiler body 1; the traction chain 5 includes inner link plates 6 and outer link plates 7, as well as connecting shafts and bushings 9 for the inner and outer link plates; the bushing 9 is in rolling connection with the guide rail; a guide wheel 10 is provided at the top corner of the guide rail; the traction chain 5 realizes circular movement along the guide rail outside the waste heat boiler body 1 through the guide wheel 10. From the above structure, it can be seen that the traction assembly includes a guide rail and a traction chain 5. The guide rail is arranged around the outside of the waste heat boiler body 1. The traction chain 5 is composed of inner link plates 6 and outer link plates 7. The outer link plates 7 and the inner link plates 6 are connected through connecting shafts in sequence. Bushings 9 are arranged on the connecting shafts and are in rolling connection with the guide rail to ensure the smooth operation of the traction chain 5. The guide rail is set as a double rail, and the traction chain 5 is also set as two, corresponding to the guide rail. A material assembly is fixed between the traction chains 5 through bearings to drive the movement of the material assembly. A guide wheel 10 is provided at the top corner of the guide rail, and through the guide wheel 10, the traction chain 5 drives the material assembly to move in a circular motion outside the waste heat boiler body 1.

[0034] The drive assembly includes a reduction motor 11, a sprocket 12, and a transmission sprocket 13; the sprocket 12 and the transmission sprocket 13 are arranged on the same main shaft 8; the output shaft of the reduction motor 11 is matched with the sprocket 12 through a chain, so as to realize the reduction motor 11 transmitting power to the transmission sprocket 13 through the sprocket 12; the transmission sprocket 13 is matched with the traction chain 5 to realize power transmission. From the above structure, it can be seen that the drive assembly is composed of a reduction motor 11, a sprocket 12, and a transmission sprocket 13. The output end of the reduction motor 11 is engaged with the sprocket 12, the sprocket 12 is engaged with the transmission sprocket 13, the sprocket 12 and the transmission sprocket 13 are arranged on the same main shaft 8, and the transmission sprocket 13 is a double-row sprocket, which is respectively matched with two traction chains 5 to transmit power. By the operation of the reduction motor 11, power is transmitted to the traction chain 5 through the sprocket 12 and the transmission sprocket 13 in sequence, driving the material assembly to move in a circular motion along the guide rail around the outside of the waste heat boiler body 1.

[0035] Embodiment 3:

[0036] See attachment Figures 1 to 7。Based on Embodiment 2, the material component includes a hopper 14 arranged on the traction chain 5; a first gate 15 and a first proximity switch 16 are provided at the bottom of the hopper 14; the first proximity switch 16 is used to receive signals to control the opening and closing of the first gate 15. From the above structure, it can be seen that the material component is the hopper 14. The cross-section of the hopper 14 is an inverted trapezoidal structure with the opening facing upward. A first gate 15 and a first proximity switch 16 are provided at the bottom. The hopper 14 is used to hold the steel balls 3 and is arranged between two traction chains 5 through bearings, which can ensure that the hopper 14 always keeps the opening facing upward during the cyclic movement, avoiding the steel balls 3 from spilling due to flipping during the movement. When the hopper 14 is towed by the traction chain 5 to above the steel ball spreading component 4, the first proximity switch 16 at the bottom of the hopper 14 can detect the signal and transmit the signal to an external controller, and then control the first gate 15 to open according to a preset time, so that the steel balls 3 in the hopper 14 fall into the steel ball spreading component 4. When the hopper 14 continues to move forward and completes the unloading of the steel balls 3, the first proximity switch 16 receives the signal and transmits it to the external controller to control the first gate 15 to close, and the hopper 14 continues to move for the next cycle.

[0037] The steel ball spreading component 4 includes a collecting pipe 17, a plurality of dispersion pipes 18 communicated with the bottom of the collecting pipe 17, a wedge-shaped collecting hopper 19 arranged at the bottom of the dispersion pipe 18, a conveying pipe 20 arranged at the bottom of the wedge-shaped collecting hopper 19, and a spherical protrusion 28 arranged at the bottom of the conveying pipe 20; the dispersion pipes 18 are uniformly arranged around the collecting pipe 17; the hopper 14 can move along the guide rail to above the collecting pipe 17. From the above structure, it can be seen that the steel ball spreading component 4 is composed of a collecting pipe 17, dispersion pipes 18, a wedge-shaped collecting hopper 19, a conveying pipe 20, and a spherical protrusion 28. The collecting pipe 17 is arranged above the waste heat boiler body 1 and is located below the guide rail. The bottom of the collecting pipe 17 is communicated with a plurality of dispersion pipes 18. Preferably, three dispersion pipes 18 are arranged, all of which penetrate the top of the waste heat boiler body 1, and the bottoms of the dispersion pipes 18 are uniformly distributed above the inside of the waste heat boiler body 1. Wedge-shaped collecting hoppers 19 are communicated with the bottoms of the three dispersion pipes 18. A conveying pipe 20 is communicated below the wedge-shaped collecting hopper 19. A spherical protrusion 28 is arranged at an appropriate distance below the conveying pipe 20. When the steel balls 3 in the hopper 14 are unloaded into the collecting pipe 17 and then pass through the dispersion pipes 18, wedge-shaped collecting hoppers 19, and conveying pipes 20 in sequence, this section of the path is fixed by specific pipelines. When the steel balls 3 finally fall onto the spherical protrusion 28 through the conveying pipe 20, they will be rebounded in all directions, and finally collide and strike each heating surface pipe in the waste heat boiler body 1 to clean the dust. The distance between the bottom of the conveying pipe 20 and the spherical protrusion 28 is adjustable, so as to control the magnitude of the rebounding force of the steel balls 3. It can effectively clean the dust on each heating surface pipe in the waste heat boiler body 1.

[0038] A manual plug valve 21 is provided at the bottom outlet of the waste heat boiler body 1; a shaftless screw conveyor 22 is connected to the bottom of the manual plug valve 21; a second gate 23 and a second proximity switch 24 are provided at the bottom of the shaftless screw conveyor 22; the second proximity switch 24 is used to receive signals to control the opening and closing of the second gate 23; the hopper 14 can move along the guide rail to below the second gate 23. From the above structure, it can be seen that a manual plug valve 21 is provided at the bottom ash hopper outlet of the waste heat boiler body 1, the manual plug valve 21 is connected to a shaftless screw conveyor 22 at the bottom, a second gate 23 and a second proximity switch 24 are provided at the bottom opening of the shaftless screw conveyor 22, and the guide rail is below the shaftless screw conveyor 22. When the hopper 14 moves along the guide rail to below the shaftless screw conveyor 22, the second proximity switch 24 can detect the signal and transmit the signal to an external controller, and then control the second gate 23 to open according to a preset time, and control the operation of the shaftless screw conveyor 22, so that the steel balls 3 in the ash hopper are conveyed into the hopper 14 through the shaftless screw conveyor 22, completing the collection and reuse of the steel balls 3. When the hopper 14 continues to move forward and completes the collection of the steel balls 3, the second proximity switch 24 receives the signal and transmits it to the external controller to control the second gate 23 to close, and the hopper 14 continues to move for the next cycle. The reuse of the steel balls 3 can be realized, and automation can be achieved.

[0039] A tensioning assembly for stabilizing the traction chain 5 is provided on the guide wheel 10; the tensioning assembly includes a lever 26 with a fulcrum provided on the guide wheel 10 and a heavy object 27 provided at the end of the lever 26; the heavy object 27 generates a moment on the fulcrum to tension the traction chain 5. From the above structure, it can be seen that the heavy object 27 generates a moment on the fulcrum to tension the traction chain 5, improving the running stability of the traction chain 5 and ensuring that the traction chain 5 will not have too much shaking during operation. Then, by adjusting the number of heavy objects 27, the best tension degree can be achieved to ensure that the traction chain 5 meshes with the driving sprocket 13 normally and rotates synchronously with the driving sprocket 13.

[0040] Guard rails are provided on both sides of the guide rail where it is located on both sides of the waste heat boiler body 1. From the above structure, it can be seen that guard rails for the vertical lifting part of the traction chain 5 are provided on both sides of the waste heat boiler body 1, ensuring that the running track of the traction chain 5 in the vertical lifting part moves vertically up and down along the guard rails, reducing the shaking during operation.

[0041] It further includes a controller; the controller is electrically connected to the first proximity switch 16, the second proximity switch 24, the first gate 15, the second gate 23, the reduction motor 11, and the shaftless screw conveyor 22 respectively. From the above structure, it can be seen that the controller can be controlled by a local electric control cabinet with a sitting structure, and multiple built-in frequency converters can independently control the operation of the first gate 15, the second gate 23, the reduction motor 11, and the shaftless screw conveyor 22, and set the operating speed of the reduction motor 11 according to the best state to ensure that when the first gate 15 and the second gate 23 are closed, all the steel balls 3 can complete unloading and collection.

[0042] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A steel ball soot cleaning system for a waste heat boiler, comprising a waste heat boiler body (1) and a steel ball soot cleaning device, characterized in that: The steel ball dust cleaning device comprises steel balls (3), a material component, a driving component and a traction component; the driving component is used for driving the traction component to operate, so that the traction component drives the material component to move circularly outside the waste heat boiler body (1) in the vertical direction; a steel ball spreading component (4) is arranged at the inner top of the waste heat boiler body (1); the material component is used for collecting the steel balls (3) and releasing the steel balls (3) into the steel ball spreading component (4); the steel ball spreading component (4) is used for spreading the steel balls (3) into the waste heat boiler body (1); the traction component comprises a guide rail and a traction chain (5); the material component comprises a hopper (14) arranged on the traction chain (5); a first gate (15) and a first proximity switch (16) are arranged at the bottom of the hopper (14); the first proximity switch (16) is used for receiving a signal to control the opening and closing of the first gate (15); the steel ball spreading component (4) comprises a collecting pipe (17), a plurality of dispersing pipes (18) communicated with the bottom of the collecting pipe (17), a wedge-shaped collecting hopper (19) arranged at the bottom of the dispersing pipe (18), a conveying pipe (20) arranged at the bottom of the wedge-shaped collecting hopper (19), and a spherical protrusion (28) arranged at the bottom of the conveying pipe (20); the distance between the bottom of the conveying pipe (20) and the spherical protrusion (28) is adjustable; the dispersing pipes (18) are uniformly arranged around the collecting pipe (17); the hopper (14) can move along the guide rail to the upper part of the collecting pipe (17).

2. The steel ball soot cleaning system for waste heat boiler according to claim 1, wherein: The guide rail surrounds the outside of the waste heat boiler body (1) in the vertical direction; the traction chain (5) comprises inner chain plates (6), outer chain plates (7), and connecting shafts and bushings (9) of the inner and outer chain plates; the bushings (9) are in rolling connection with the guide rail; guide wheels (10) are arranged at the top corners of the guide rail; the traction chain (5) realizes circular movement along the guide rail outside the waste heat boiler body (1) through the guide wheels (10).

3. The steel ball soot cleaning system for waste heat boilers according to claim 2, wherein: The driving component comprises a reduction motor (11), a toothed sprocket (12) and a transmission sprocket (13); the toothed sprocket (12) and the transmission sprocket (13) are arranged on the same main shaft (8); the output shaft of the reduction motor (11) is matched with the toothed sprocket (12) through a chain, so that the reduction motor (11) transmits power to the transmission sprocket (13) through the toothed sprocket (12); the transmission sprocket (13) is matched with the traction chain (5) to realize power transmission.

4. The steel ball soot cleaning system for waste heat boiler according to claim 1, characterized in that: A manual plug valve (21) is arranged at the bottom outlet of the waste heat boiler body (1); a shaftless screw conveyor (22) is connected to the bottom of the manual plug valve (21); a second gate (23) and a second proximity switch (24) are arranged at the bottom of the shaftless screw conveyor (22); the second proximity switch (24) is used for receiving a signal to control the opening and closing of the second gate (23); the hopper (14) can move along the guide rail to the lower part of the second gate (23).

5. A steel ball soot cleaning system for a waste heat boiler according to claim 1, characterized in that: A plurality of heat transfer surface pipes (25) arranged in a staggered manner are arranged in the waste heat boiler body (1), and the horizontal gap between two adjacent heat transfer surface pipes (25) is smaller than the diameter of the steel balls (3).

6. The steel ball soot cleaning system for waste heat boiler according to claim 2, characterized in that: A tensioning assembly for stabilizing the traction chain (5) is provided on the guide wheel (10); the tensioning assembly includes a lever (26) with a fulcrum provided on the guide wheel (10) and a heavy object (27) provided at the end of the lever (26); the heavy object (27) generates a moment on the fulcrum to tension the traction chain (5).

7. The steel ball soot cleaning system for waste heat boiler according to claim 2, characterized in that: Guard rails are provided at both sides of the waste heat boiler body (1) where the guide rails are located.

8. The steel ball soot cleaning system for a waste heat boiler according to claim 4, wherein: It further includes a controller; the controller is electrically connected to the first proximity switch (16), the second proximity switch (24), the first gate (15), the second gate (23), the reduction motor (11), and the shaftless screw conveyor (22) respectively.

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