Ash deposition prevention device of waste heat boiler for steel plant

Abstract

The invention discloses a waste heat boiler dust deposition prevention device for an iron and steel plant, and particularly relates to the technical field of waste heat boiler dust deposition prevention devices. By arranging the multi-point rapping structure, during use, multi-point simultaneous rapping is adopted, firstly, in the aspect of applying impact force to accumulated dust, multi-point simultaneous rapping can act on the accumulated dust in multiple directions, the impact force in multiple directions can generate extremely complex and diversified stress distribution in the accumulated dust, the stress can break adhesion of accumulated dust particles, and the dust particles are prevented from being separated from the accumulated dust; the method comprises the following steps of: firstly, applying impact force matched with the inherent frequency of an ash deposition structure to the vibration points at different positions on the vibration points on the initiation of a resonance phenomenon, more easily initiating resonance, violently vibrating the ash deposition particles by the resonance, and further generating a tensile force to separate the particles; the vibration points at different positions exert the impact force matched with the inherent frequency of the ash deposition structure; the structural stability is weakened, so that particles are connected loosely and fall off, and accumulated dust finally falls off from a heated surface.

Description

Technical Field

[0001] The invention relates to the technical field of waste heat boiler dust accumulation prevention devices, and in particular to a waste heat boiler dust accumulation prevention device used in a steel plant. Background Art

[0002] In steel production, although waste heat boilers can recycle waste heat from high-temperature flue gas to produce steam for power generation or other processes, the flue gas of steel plants contains a large amount of dust particles. During operation, dust is deposited on the heating surface to form ash. Ash accumulation will reduce the heat transfer efficiency. Due to its low thermal conductivity, it is difficult for heat to be transferred from the flue gas to the working fluid, resulting in a decrease in steam production. In order to maintain production, fuel consumption must be increased, which not only increases costs but also wastes energy. It will also cause corrosion of the heating surface. Sulfur dioxide and other components in the flue gas react on the surface of the ash accumulation to generate acidic substances, corroding metal materials and shortening the life of the boiler. Long-term corrosion has leakage hazards, increasing maintenance and replacement costs and downtime, and affecting production continuity. In addition, ash accumulation may cause boiler operation failures. Excessive ash accumulation will increase the flow resistance of the flue gas, resulting in poor ventilation, incomplete combustion, increased pollutant emissions, abnormal furnace pressure, etc. In severe cases, it will cause major accidents such as pipe bursts, bringing economic losses and safety risks to the enterprise. Therefore, waste heat boilers must be used with anti-ash accumulation devices to ensure their efficient, safe and stable operation, reduce the many adverse effects caused by ash accumulation, and improve the overall efficiency and safety of steel production.

[0003] The current anti-ash deposition devices generally work in synergy with sonic cleaning and mechanical vibration, but mechanical vibration is mostly limited to a single-point vibration mode. When dealing with complex ash deposition conditions such as those caused by burning inferior coal or biomass fuels, single-point vibration can only form weak disturbances locally, which is difficult to destroy the core structure of the ash deposition. The impact force applied from a single direction cannot form a complex and effective stress distribution inside the ash deposition, making it difficult to cut off the adhesion between the ash particles, and the ash layer can still maintain a relatively stable state. Secondly, the resonance effect induced by single-point vibration is limited, and the resonance effect inside the ash deposition cannot be fully stimulated, resulting in the ash deposition being difficult to be effectively loosened and broken as a whole, so that the ash deposition is not removed thoroughly enough, and a lot of ash will still remain on the heating surface of the boiler, seriously hindering the efficient transfer of heat between the flue gas and the working fluid, making it difficult to achieve a substantial breakthrough and improvement in the heat exchange efficiency. Summary of the invention

[0004] The object of the present invention is to provide a device for preventing dust accumulation of a waste heat boiler in a steel plant, so as to solve the above-mentioned deficiencies in the technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a waste heat boiler anti-dust accumulation device for a steel plant, comprising a fixed frame covered on the outside of the waste heat boiler, the inner surface wall of the fixed frame is fixedly connected with a plurality of fixed plates through a block, a plurality of sound wave generators are equidistantly and evenly installed on the lower end surfaces of the plurality of the fixed plates, one end of the plurality of the sound wave generators is connected to a horn, the sound outlet end of the horn passes through and extends to the interior of the waste heat boiler, and two of the fixed plates are connected by a cylindrical end block.

[0006] Specifically, when in use, the sound wave generator is turned on, and the high-frequency sound waves generated by the operation are transmitted to the space inside the waste heat boiler through the speaker. During the propagation of the sound waves, after encountering ash particles, the energy of the sound waves causes the ash particles to vibrate. Since the adhesion between the ash particles and between the ash and the heating surface is limited, the friction between the ash particles will increase during the vibration process, causing the ash to gradually become loose, and eventually fall off the heating surface under the continuous action of gravity and sound waves.

[0007] Preferably, the fixed frame is provided with a multi-point rapping structure, and the multi-point rapping structure includes a fixed cylinder embedded in a through groove reserved in the outer wall of the fixed frame, a connecting plate is provided at the front end of the fixed cylinder, and a plurality of rapping blocks are equidistant and evenly connected to the side of the connecting plate away from the fixed cylinder, a T-rod is inserted into the interior of the fixed cylinder, one end of the T-rod is fixedly connected to the connecting plate, and the other end of the T-rod is connected to a movable rod, a spring is provided on the outside of the movable rod and located inside the fixed cylinder, and a connecting rod assembly is provided on the outside of the movable rod, a protective pad is provided at the front end of the connecting plate, and the protective pad is fixedly connected to the outer wall of the waste heat boiler.

[0008] Preferably, the connecting rod assembly includes a fixed side plate fixedly connected to the outer wall of the waste heat boiler, a driving shaft movably connected to the fixed side plate, an end of the driving shaft away from the fixed side plate is connected to a first connecting rod, a second connecting rod is slidably connected to one side of the first connecting rod, a third connecting rod is hinged at one end of the second connecting rod, and the other end of the third connecting rod is fixedly connected to the outer wall of the movable rod.

[0009] Preferably, the connecting rod assembly also includes a sliding groove opened on the outer wall of the second connecting rod, the interior of the sliding groove is slidably connected with a slider, one end of the slider is connected to the first connecting rod, the side wall of the fixed side plate is fixedly connected with a fourth connecting rod, and the end of the fourth connecting rod away from the fixed side plate is hinged to the second connecting rod.

[0010] Through the above technical solution:

[0011] During the sonic cleaning process, the driving shaft rotates to drive the first connecting rod to rotate. At this time, the slider slides in the slide groove opened in the second connecting rod, thereby driving the upper end of the second connecting rod to swing, so that the third connecting rod swings and changes the inclination angle, and finally drives the movable rod to move laterally, pushing the connecting plate connected by the T-shaped rod to approach the waste heat boiler, so that the vibrating block vibrates the waste heat boiler. Under the action of centrifugal force, the vibrating block hits the heating surface, and its periodic mechanical impact force destroys the bonding force between the accumulated ash and the heating surface, so that the accumulated ash falls into the ash hopper. Since there are multiple rapping blocks, simultaneous rapping at multiple points is achieved. When impact force is applied to the ash accumulation, it can act from multiple directions, making the internal stress distribution of the ash accumulation complex and diverse, breaking the adhesion of the particles, and generating shear force and tensile force to cut and separate the particles. In terms of inducing resonance, multiple rapping points apply impact force that matches the natural frequency of the ash accumulation, which can easily induce resonance, causing the ash particles to vibrate violently, weakening the structural stability, and causing the particles to loosen and fall off. In terms of cleaning the heated surface, the multi-point rapping system can cover a larger range, and the cooperation of each rapping point can completely remove the ash accumulation, thereby greatly improving the heat exchange efficiency of the boiler.

[0012] Preferably, a plurality of protrusions are fixedly connected to the rapping contact surface of the rapping block, and the plurality of protrusions are evenly distributed at equal intervals.

[0013] Specifically, when in use, the protrusions of the rapping block can evenly disperse the impact force, avoid wear, deformation and fracture caused by excessive local stress, reduce the risk of local damage, extend the life of the rapping block and reduce uneven wear. When it contacts the heated surface, the wear is evenly distributed on the protrusions, so that the rapping block can maintain a stable shape and performance for a long time, preventing the cleaning effect from being reduced or failing prematurely due to excessive local wear, ensuring its shape stability and performance reliability, ensuring the long-term stable operation of the rapping system, and improving the continuity and effectiveness of the cleaning operation.

[0014] Preferably, a driving assembly is provided on the multi-point rapping structure, and the driving assembly comprises a belt roller mounted on a driving shaft, and a belt is sleeved on the outside of the belt roller.

[0015] Preferably, the driving assembly further comprises a driving motor mounted on the outer wall of the fixed side plate, and an output end of the driving motor is connected to the driving shaft.

[0016] Through the above technical solution:

[0017] When in use, the belt roller is installed on the driving shaft, and the belt is sleeved on the outside of the belt roller, and one of the driving shafts is driven to rotate by the driving motor, and the belt and the belt roller drive each connecting rod assembly to move. There is no need to install multiple motors at the ends of each driving shaft. The single driving motor can avoid the disordered movement of the connecting rod assembly caused by the performance differences of multiple motors, and allow the connecting rod assembly to operate in coordination with the set rhythm and amplitude, ensuring that the vibration block vibrates the heated surface with uniform force and consistent direction, effectively destroying the bonding structure between the dust accumulation and the heated surface, allowing the dust accumulation to fall off stably into the ash hopper, preventing dust accumulation, maintaining good heat exchange performance of the boiler, ensuring the thermal energy utilization and energy conversion efficiency of the steel plant, and reducing energy waste and equipment loss caused by dust accumulation.

[0018] Preferably, an air pulse soot blowing structure is provided on one side of the horn, and the air pulse soot blowing structure includes a nozzle arranged inside the waste heat boiler, the outer wall of the nozzle is equidistantly and evenly connected with a plurality of nozzles, and the upper end of the nozzle penetrates and extends to the upper end of the waste heat boiler, one side of the outer wall of the nozzle is connected to an air intake pipe, and a pulse valve is installed on the air intake pipe.

[0019] Through the above technical solution:

[0020] When in use, first connect the delivery pipe connected to the outlet end of the storage tank to the inlet end of the air inlet pipe, then open the pulse valve, the compressed air in the storage tank is released instantly, and is sent into the air inlet pipe through the delivery pipe, and then enters the nozzle, and finally is ejected from the multiple nozzles, so that the high-speed pulse airflow impacts the heating surface to destroy the adhesion of the dust and make it fall off, and the air pulse soot blowing cooperates with the multi-point vibration structure to greatly improve the dust cleaning effect, ensure the effective cleaning of dust in each corner, keep the heating surface clean, optimize the heat exchange performance of the boiler, and reduce energy waste. At the same time, the air pulse soot blowing will not damage the heating surface, ensure its integrity, and extend the service life of the heating surface.

[0021] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0022] 1. By setting up a multi-point vibration structure, when using it, multi-point simultaneous vibration is adopted. First, in terms of applying impact force to the ash accumulation, multi-point simultaneous vibration can act on the ash accumulation from multiple directions. The multi-directional impact force will cause extremely complex and diverse stress distribution inside the ash accumulation. This stress can break the adhesion of the ash accumulation particles. The superposition of the forces at each vibration point generates shear force to cut off the connection between the particles, and can also generate tensile force to separate the particles. Secondly, in terms of inducing the resonance phenomenon, multiple vibration points at different positions apply impact forces that match the natural frequency of the ash accumulation structure, which is more likely to induce resonance. The resonance causes the ash accumulation particles to vibrate violently, weakening the structural stability, causing the particles to loosen and fall off, and the ash accumulation will eventually fall off the heating surface. In addition, in terms of cleaning the heating surface, the multi-point vibration system can cover a larger range of heating surfaces, and the various vibration points cooperate with each other to remove the ash accumulation on the heating surface of the boiler as thoroughly as possible. As the ash accumulation is effectively removed, the heat exchange efficiency of the boiler will be greatly improved;

[0023] 2. By setting the bumps, the impact force generated during use will be evenly dispersed to each bump, avoiding the impact force from being over-concentrated at a certain point of the contact end, which will cause excessive stress at that point and easily lead to wear, deformation or even breakage. However, the bumps can make the stress distribution more uniform, greatly reducing the risk of local damage, thereby extending the service life of the rapping block and reducing uneven wear. Secondly, when the rapping block contacts the heated surface, the wear will be relatively evenly distributed on each bump, and the rapping block can maintain a relatively stable shape and performance for a long time, preventing the disadvantages of reduced cleaning effect or premature failure of the rapping block due to local excessive wear and resulting in depressions or other shape changes, without affecting the normal operation of the entire rapping system, ensuring the shape stability and performance reliability of the rapping block, thereby ensuring that the rapping system can operate stably for a long time.

[0024] 3. By setting up a drive assembly and driving by a single drive motor, the drawback of disordered movement of the connecting rod assembly caused by the individual performance differences of the motors when multiple motors are driven can be effectively avoided. Under the drive of a unified power source, each connecting rod assembly can work in coordination according to the precisely set rhythm and amplitude, ensuring that the vibration force of the vibration block on the heating surface of the waste heat boiler is uniform and consistent in direction. The precise and stable vibration action can more efficiently destroy the bonding structure between the ash accumulation and the heating surface, so that the ash accumulation falls off continuously and stably and falls into the ash hopper, preventing the ash accumulation on the heating surface, thereby always maintaining the good heat exchange performance of the boiler, ensuring the full utilization of heat energy and energy conversion efficiency in the production process of the steel plant, and reducing energy waste and equipment loss caused by ash accumulation problems;

[0025] 4. By setting up the air pulse soot blowing structure, the anti-ash accumulation device has the soot blowing function. The powerful impact force of the high-speed pulse airflow generated by the air pulse soot blowing can directly and efficiently destroy the adhesion between the ash accumulation and the heating surface. Secondly, the air pulse soot blowing is combined with the multi-point vibration structure for cleaning, which can greatly improve the ash removal effect and ensure that the ash accumulation in every corner can be effectively cleaned, so that the heating surface is always kept clean, further optimizing the heat exchange performance of the boiler and reducing the energy waste caused by ash accumulation. In addition, the air pulse soot blowing will not cause physical damage to the heating surface, ensuring the integrity of the heating surface, thereby greatly extending the service life of the heating surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a cutaway schematic diagram of the present invention;

[0029] Figure 3 This is one of the schematic diagrams of the connection between the multi-point rapping structure and the fixing frame of the present invention;

[0030] Figure 4 This is the second schematic diagram of the connection between the multi-point rapping structure and the fixing frame of the present invention;

[0031] Figure 5 It is a schematic diagram of the multi-point rapping structure of the present invention;

[0032] Figure 6 It is an enlarged schematic diagram of the connecting rod assembly of the present invention;

[0033] Figure 7 It is an enlarged schematic diagram of the driving assembly of the present invention;

[0034] Figure 8 It is a schematic diagram of the air pulse soot blowing structure of the present invention.

[0035] Description of reference numerals:

[0036] 1. Fixed frame; 2. Fixed plate; 3. Sound wave generator; 4. Speaker; 5. Multi-point vibration structure; 51. Fixed cylinder; 52. Connecting plate; 53. Protective pad; 54. Vibrating block; 55. T-bar; 56. Spring; 57. Movable rod; 511. Fixed side plate; 512. Drive shaft; 513. First connecting rod; 514. Second connecting rod; 515. Slide groove; 516. Sliding block; 517. Third connecting rod; 518. Fourth connecting rod; 6. Drive assembly; 61. Belt roller; 62. Belt; 63. Drive motor; 7. Bump; 8. Air pulse soot blowing structure; 81. Nozzle; 82. Inlet pipe; 83. Nozzle; 84. Pulse valve. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0038] The present invention provides Figure 1 and Figure 2 The waste heat boiler dust accumulation prevention device for a steel plant shown in the figure comprises:

[0039] A fixing frame 1 is arranged outside the waste heat boiler, and the inner surface wall of the fixing frame 1 is fixedly connected with a plurality of fixing plates 2 through a block, and a plurality of sound wave generators 3 are evenly and equidistantly installed on the lower end surfaces of the plurality of fixing plates 2, and one end of the plurality of sound wave generators 3 is connected with a speaker 4, and the sound outlet end of the speaker 4 penetrates and extends to the interior of the waste heat boiler, and the two fixing plates 2 are connected by a cylindrical end block.

[0040] Specifically, when in use, the sound wave generator 3 is turned on, and the high-frequency sound waves generated by the operation are transmitted to the space inside the waste heat boiler through the speaker 4. During the propagation of the sound waves, after encountering the ash particles, the energy of the sound waves causes the ash particles to vibrate. Since the adhesion between the ash particles and between the ash and the heating surface is limited, the friction between the ash particles will increase during the vibration process, causing the ash to gradually become loose, and eventually fall off from the heating surface under the continuous action of gravity and sound waves.

[0041] The present invention provides Figure 2-Figure 5The shown device is a waste heat boiler dust accumulation prevention device for a steel plant, wherein a multi-point rapping structure 5 is provided on a fixed frame 1, and the multi-point rapping structure 5 includes a fixed cylinder 51 embedded in a through groove reserved in the outer wall of the fixed frame 1, a connecting plate 52 is provided at the front end of the fixed cylinder 51, and a plurality of rapping blocks 54 are equidistantly and evenly connected to the side of the connecting plate 52 away from the fixed cylinder 51, a T-bar 55 is inserted into the interior of the fixed cylinder 51, one end of the T-bar 55 is fixedly connected to the connecting plate 52, and the other end of the T-bar 55 is connected to a movable rod 57, a spring 56 is provided on the outside of the movable rod 57 and located inside the fixed cylinder 51, and a connecting rod assembly is provided on the outside of the movable rod 57, a protective pad 53 is provided at the front end of the connecting plate 52, and the protective pad 53 is fixedly connected to the outer wall of the waste heat boiler.

[0042] Further, see Figure 5 and Figure 6 As shown, the connecting rod assembly includes a fixed side plate 511 fixedly connected to the outer wall of the waste heat boiler, a driving shaft 512 is movably connected to the fixed side plate 511, an end of the driving shaft 512 away from the fixed side plate 511 is connected to a first connecting rod 513, one side of the first connecting rod 513 is slidably connected to a second connecting rod 514, one end of the second connecting rod 514 is hinged to a third connecting rod 517, and the other end of the third connecting rod 517 is fixedly connected to the outer wall of the movable rod 57.

[0043] The connecting rod assembly also includes a slide groove 515 opened on the outer wall of the second connecting rod 514, and the interior of the slide groove 515 is slidably connected with a slider 516, one end of the slider 516 is connected to the first connecting rod 513, and the side wall of the fixed side plate 511 is fixedly connected with a fourth connecting rod 518, and the end of the fourth connecting rod 518 away from the fixed side plate 511 is hinged to the second connecting rod 514.

[0044] Through the above technical solution:

[0045] During the sonic cleaning process, the driving shaft 512 rotates to drive the first connecting rod 513 to rotate. At this time, the slider 516 slides in the slide groove 515 provided in the second connecting rod 514, thereby driving the upper end of the second connecting rod 514 to swing, so that the third connecting rod 517 swings accordingly and changes the inclination angle, and finally drives the movable rod 57 to move horizontally, pushing the connecting plate 52 connected by the T-shaped rod 55 to approach the waste heat boiler, so that the vibration block 54 vibrates the waste heat boiler. Under the action of centrifugal force, the vibration block 54 strikes the heating surface, and its periodic mechanical impact force destroys the adhesion between the accumulated dust and the heating surface, causing the accumulated dust to fall into the The ash hopper has multiple vibration blocks 54, which can achieve simultaneous vibration at multiple points. When the impact force is applied to the ash accumulation, it can act from multiple directions, making the internal stress distribution of the ash accumulation complex and diverse, breaking the adhesion of the particles, generating shear force and tensile force to cut off and separate the particles. In terms of inducing resonance, multiple vibration points apply impact forces that match the natural frequency of the ash accumulation, which can easily induce resonance, causing the ash particles to vibrate violently, weakening the structural stability, and causing the particles to loosen and fall off. In terms of cleaning the heated surface, the multi-point vibration system can cover a larger range, and the cooperation of each vibration point can completely remove the ash accumulation, thereby greatly improving the heat exchange efficiency of the boiler.

[0046] Further, see Figure 4 As shown, a plurality of protrusions 7 are fixedly connected to the rapping contact surface of the rapping block 54, and the plurality of protrusions 7 are evenly distributed at equal distances.

[0047] Specifically, when in use, the protrusion 7 of the rapping block 54 can evenly disperse the impact force, avoid wear, deformation and fracture caused by excessive local stress, reduce the risk of local damage, extend the life of the rapping block 54 and reduce uneven wear. When it contacts the heated surface, the wear is evenly distributed on the protrusion 7, so that the rapping block 54 can maintain a stable shape and performance for a long time, prevent the cleaning effect from being reduced or failing prematurely due to excessive local wear, ensure its shape stability and performance reliability, ensure the long-term stable operation of the rapping system, and improve the continuity and effectiveness of the cleaning operation.

[0048] The present invention provides Figure 3 and Figure 7 The device for preventing dust accumulation of a waste heat boiler used in a steel plant is shown. A driving assembly 6 is provided on a multi-point rapping structure 5. The driving assembly 6 includes a belt roller 61 installed on a driving shaft 512. A belt 62 is provided on the outside of the belt roller 61.

[0049] The driving assembly 6 further includes a driving motor 63 mounted on the outer wall of the fixed side plate 511 , and an output end of the driving motor 63 is connected to the driving shaft 512 .

[0050] Through the above technical solution:

[0051] When in use, the belt roller 61 is installed on the drive shaft 512, and the belt 62 is sleeved on the outside of the belt roller 61, and one of the drive shafts 512 is driven to rotate by the drive motor 63, and the belt 62 and the belt roller 61 drive each connecting rod assembly to move. There is no need to install multiple motors at the end of each drive shaft 512. The drive of a single drive motor 63 can avoid the disordered movement of the connecting rod assembly caused by the performance differences of multiple motors, and allow the connecting rod assembly to operate in coordination according to the set rhythm and amplitude, ensuring that the vibration block 54 vibrates the heated surface with uniform force and consistent direction, effectively destroying the bonding structure between the dust accumulation and the heated surface, allowing the dust accumulation to fall off stably into the ash hopper, preventing dust accumulation, maintaining good heat exchange performance of the boiler, ensuring the thermal energy utilization and energy conversion efficiency of the steel plant, and reducing energy waste and equipment loss caused by dust accumulation.

[0052] The present invention provides Figure 2 and Figure 8 The illustrated embodiment shows a waste heat boiler dust accumulation prevention device for a steel plant, wherein an air pulse dust blowing structure 8 is provided on one side of a horn 4, and the air pulse dust blowing structure 8 comprises a nozzle 81 arranged inside the waste heat boiler, and a plurality of nozzles 83 are evenly and equidistantly connected to the outer wall of the nozzle 81, and the upper end of the nozzle 81 penetrates and extends to the upper end of the waste heat boiler, and an air inlet pipe 82 is connected to one side of the outer wall of the nozzle 81, and a pulse valve 84 is installed on the air inlet pipe 82.

[0053] Through the above technical solution:

[0054] When in use, first connect the delivery pipe connected to the outlet end of the storage tank to the inlet end of the air inlet pipe 82, then open the pulse valve 84, and the compressed air in the storage tank is released instantly, and is sent into the air inlet pipe 82 through the delivery pipe, and then enters the nozzle 81, and finally is ejected from multiple nozzles 83, so that the high-speed pulse airflow impacts the heating surface to destroy the adhesion of the dust and make it fall off, and the air pulse soot blowing cooperates with the multi-point vibration structure 5, which can greatly improve the dust cleaning effect, ensure the effective cleaning of dust in each corner, keep the heating surface clean, optimize the heat exchange performance of the boiler, and reduce energy waste. At the same time, the air pulse soot blowing will not damage the heating surface, ensure its integrity, and extend the service life of the heating surface.

[0055] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A waste heat boiler dust accumulation prevention device for a steel plant, characterized in that: include: A fixed frame (1) is arranged outside the waste heat boiler, the inner surface wall of the fixed frame (1) is fixedly connected to a plurality of fixed plates (2) via a block, a plurality of sound wave generators (3) are evenly and equidistantly mounted on the lower end surfaces of the plurality of fixed plates (2), one end of the plurality of sound wave generators (3) is connected to a speaker (4), and a multi-point vibration structure (5) is provided on the fixed frame (1); The multi-point rapping structure (5) comprises a fixed cylinder (51) embedded in a through groove reserved on the outer wall of the fixed frame (1), a connecting plate (52) is provided at the front end of the fixed cylinder (51), a plurality of rapping blocks (54) are equidistantly and evenly connected to the side of the connecting plate (52) away from the fixed cylinder (51), a T-shaped rod (55) is inserted into the interior of the fixed cylinder (51), one end of the T-shaped rod (55) is fixedly connected to the connecting plate (52), and the other end of the T-shaped rod (55) is connected to a movable rod (57), a spring (56) is sleeved on the outside of the movable rod (57) and located inside the fixed cylinder (51), and a connecting rod assembly is provided on the outside of the movable rod (57).

2. The dust accumulation prevention device for waste heat boiler used in a steel plant according to claim 1, characterized in that: The connecting rod assembly includes a fixed side plate (511) fixedly connected to the outer wall of the waste heat boiler, a driving shaft (512) movably connected to the fixed side plate (511), an end of the driving shaft (512) away from the fixed side plate (511) is connected to a first connecting rod (513), one side of the first connecting rod (513) is slidably connected to a second connecting rod (514), one end of the second connecting rod (514) is hinged to a third connecting rod (517), and the other end of the third connecting rod (517) is fixedly connected to the outer wall of the movable rod (57).

3. The dust accumulation prevention device for waste heat boiler used in a steel plant according to claim 2, characterized in that: The connecting rod assembly also includes a slide groove (515) opened on the outer wall of the second connecting rod (514), and the interior of the slide groove (515) is slidably connected to a slider (516), one end of the slider (516) is connected to the first connecting rod (513), and the side wall of the fixed side plate (511) is fixedly connected to a fourth connecting rod (518), and one end of the fourth connecting rod (518) away from the fixed side plate (511) is hinged to the second connecting rod (514).

4. The dust accumulation prevention device for waste heat boiler used in a steel plant according to claim 1, characterized in that: The multi-point rapping structure (5) is provided with a driving assembly (6), and the driving assembly (6) comprises a belt roller (61) mounted on a driving shaft (512), and a belt (62) is sleeved on the outside of the belt roller (61).

5. The dust accumulation prevention device for waste heat boiler used in a steel plant according to claim 4, characterized in that: The driving assembly (6) further comprises a driving motor (63) mounted on the outer wall of the fixed side plate (511), and an output end of the driving motor (63) is connected to the driving shaft (512).

6. The dust accumulation prevention device for waste heat boiler used in a steel plant according to claim 1, characterized in that: A plurality of protrusions (7) are fixedly connected to the rapping contact surface of the rapping block (54), and the plurality of protrusions (7) are evenly distributed at equal distances.

7. The dust accumulation prevention device for waste heat boiler used in a steel plant according to claim 1, characterized in that: The sound outlet end of the horn (4) penetrates and extends into the interior of the waste heat boiler, and the two fixing plates (2) are connected via a cylindrical end block.

8. The dust accumulation prevention device for waste heat boiler used in a steel plant according to claim 1, characterized in that: A protective pad (53) is provided at the front end of the connecting plate (52), and the protective pad (53) is fixedly connected to the outer wall of the waste heat boiler.

9. The dust accumulation prevention device for waste heat boiler used in a steel plant according to claim 1, characterized in that: An air pulse soot blowing structure (8) is provided on one side of the horn (4), and the air pulse soot blowing structure (8) comprises a nozzle (81) arranged inside the waste heat boiler, the outer wall of the nozzle (81) is evenly and equidistantly connected with a plurality of nozzles (83), and the upper end of the nozzle (81) penetrates and extends to the upper end of the waste heat boiler, and one side of the outer wall of the nozzle (81) is connected to an air intake pipe (82), and a pulse valve (84) is installed on the air intake pipe (82).

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