Flue gas treatment equipment for coal-fired boiler

Abstract

The invention relates to the technical field of smoke treatment equipment, and provides coal-fired boiler smoke treatment equipment which comprises a shell, a smoke inlet pipe is arranged on one side of the shell, a smoke outlet is formed in the top of the shell, a spraying device is arranged in the shell, a heat conduction cylinder is arranged at the bottom in the shell, a smoke containing cavity is formed in the heat conduction cylinder, and a smoke outlet is formed in the smoke containing cavity. The smoke inlet pipe extends into the smoke containing cavity, the top of the smoke containing cavity is fixedly connected with a plurality of filter cartridges used for filtering particulate matter in smoke, one end of each filter cartridge extends out of the heat conduction barrel, and a plurality of filter holes are formed in the outer surface, at one end of the smoke containing cavity, of each filter cartridge. A plurality of air outlets are formed in the outer surfaces of the sides, away from the heat conduction cylinder, of the filter cylinders, and a cleaning device used for cleaning the outer surfaces of the filter cylinders is arranged in the smoke containing cavity. According to the technical scheme, a worker does not need to shut down when cleaning the filter screen, and the flue gas treatment efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas treatment equipment, and in particular to a flue gas treatment equipment for a coal-fired boiler. Background Art

[0002] As the main heat supply equipment, coal-fired boilers are widely used in industrial production and energy supply. During operation, coal-fired boilers will produce a large amount of flue gas, which contains a large amount of particulate matter, sulfur dioxide, nitrogen oxides and other harmful substances. If these substances are directly discharged without treatment, they will cause serious pollution to the environment. Therefore, flue gas treatment equipment plays a vital role in coal-fired boiler systems. However, as the flue gas continues to pass through, the filter will gradually be blocked by dust, resulting in a decrease in flue gas treatment efficiency.

[0003] In the prior art, the filter screen of coal-fired boiler flue gas treatment equipment is usually maintained by regular shutdown and cleaning. Although this maintenance method can restore the filtering effect of the filter screen, since each cleaning requires shutdown operation, the boiler system must be interrupted, which affects the continuity of the entire treatment process and reduces the efficiency of flue gas treatment. Summary of the invention

[0004] The invention provides a coal-fired boiler flue gas treatment device, which enables workers to clean the filter without stopping the machine, thereby improving the efficiency of flue gas treatment.

[0005] The technical solution of the present invention is as follows: A coal-fired boiler flue gas treatment device comprises a shell, a smoke inlet pipe is provided on one side of the shell, a smoke outlet is provided on the top of the shell, a spray device is provided in the shell, a heat-conducting cylinder is provided at the bottom of the shell, a smoke-containing chamber is provided inside the heat-conducting cylinder, the smoke inlet pipe extends into the smoke-containing chamber, a plurality of filter cylinders for filtering particulate matter in the smoke are fixedly connected to the top of the smoke-containing chamber, and one end of each filter cylinder extends to the outside of the heat-conducting cylinder, a plurality of filter holes are provided on the outer surface of one end of the smoke-containing chamber, a plurality of air outlets are provided on the outer surface of the filter cylinder on the side away from the heat-conducting cylinder, and a cleaning device for cleaning the outer surface of each filter cylinder is provided inside the smoke-containing chamber.

[0006] Furthermore, the cleaning device includes cleaning brushes respectively arranged on the outer surface of each filter cartridge, a transmission mechanism connected to each cleaning brush, and a driving assembly that drives the transmission mechanism to drive the cleaning brush to clean the outer surface of the filter cartridge. The transmission mechanism includes a first gear and a plurality of second gears. Each filter cartridge is circumferentially arranged with the heat conducting cartridge as the center. Each second gear is rotatably connected to the outer surface of each filter cartridge respectively. The cleaning brush is fixedly connected to the second gear. The first gear is arranged at the top of the smoke containing chamber and rotatably connected to the top of the containing chamber, and each second gear is meshed with the first gear.

[0007] Furthermore, the driving assembly includes a rotating cylinder, a rotating shaft, and a plurality of fan blades. A first support frame is fixedly connected to the smoke outlet, the rotating shaft is rotatably connected to the first support frame, the rotating cylinder is arranged on a side of the rotating shaft close to the support frame, each of the fan blades is respectively arranged on the outer surface of the rotating cylinder and fixedly connected to the rotating cylinder, and one end of the rotating shaft extends into the smoke containing chamber and is fixedly connected to the first gear.

[0008] Furthermore, the spray device includes a water pump, a first delivery pipe, a hollow disk, a plurality of spray pipes and a nozzle arranged on each spray pipe, the water pump is connected to the interior of the shell, the hollow disk is arranged inside the shell and fixedly connected to the inner wall of the shell through a second support frame, one end of the first delivery pipe is connected to the water pump, and the other end of the first delivery pipe is connected to the interior of the hollow disk, each of the spray pipes is arranged on the outer surface of the rotating shaft and fixedly connected to the rotating shaft, and each of the spray pipes is connected to the interior of the hollow disk through the second delivery pipe.

[0009] Furthermore, a receiving groove is provided at the bottom of the hollow disk, a rotating disk is rotatably connected in the receiving groove, rotating grooves are provided on both sides of the receiving groove, rotating rings are provided on both sides of the rotating disk, the rotating rings are rotatably connected to the inner wall of the rotating groove, one end of the second conveying pipe is fixedly connected to the rotating disk, and the other end of the second conveying pipe is connected to the inside of the spray pipe.

[0010] Furthermore, a filter is provided inside the shell, the outer side of the filter is fixedly connected to the inner wall of the shell, the inner side of the filter is fixedly connected to the outer wall of the heat-conducting tube, a collecting port is provided on one side of the filter, and a collecting plate is fixedly connected to the collecting port, and the collecting plate is provided below the filter, the collecting plate is provided with a plurality of through holes, a cleaning plate for cleaning the surface of the filter is provided on the top of the filter, and the cleaning plate is fixedly connected to the rotating shaft through a connecting frame.

[0011] Furthermore, a collecting box is provided on the side of the shell close to the collecting port, and the collecting box is fixedly connected to the shell, a collecting channel is provided inside the collecting box, and the collecting channel is connected to the collecting port, the collecting plate is inclined, and a sealing mechanism for sealing the collecting channel is provided on the side of the collecting box away from the shell.

[0012] Furthermore, the top of the heat-conducting cylinder is in a truncated cone shape, and a baffle is provided on a side of each filter cylinder away from the heat-conducting cylinder, and the baffle is fixedly connected to the filter cylinder.

[0013] Furthermore, the sealing mechanism includes a sealing plate and a plurality of bolts. The sealing plate is arranged on a side of the collection box away from the shell. The bolts are respectively arranged at four corners of the sealing plate and threadedly connected to the collection box. A sealing gasket is provided between the sealing plate and the collection box.

[0014] The working principle and beneficial effects of the present invention are:

[0015] During use, the staff connects the boiler's smoke exhaust pipe to the smoke inlet pipe, and the smoke will enter the smoke chamber from the smoke inlet pipe, and the particulate matter in the smoke will be filtered through the filter cartridge in the smoke chamber. The filtered smoke will enter the shell through the air outlet inside the filter cartridge, and then the smoke will be desulfurized by the spray device to achieve better environmental protection effects and emission standards. Through the set cleaning device, the filter cartridge can be cleaned when the equipment is operating normally, which greatly improves the continuous operation capacity of the equipment and the efficiency of flue gas treatment. Secondly, the set cleaning device can promptly remove the dust accumulated on the surface of the filter cartridge and maintain the good filtering performance of the filter cartridge, thereby ensuring that the flue gas treatment equipment can operate continuously and stably and maintain a high flue gas treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] Figure 1 The structure of the first embodiment is shown in FIG. Figure 1 ;

[0018] Figure 2 The structure of the first embodiment is shown in FIG. Figure 2 ;

[0019] Figure 3 for Figure 2 The enlarged schematic diagram at A in the middle;

[0020] Figure 4 A schematic cross-sectional view of a local structure of the first embodiment Figure 1 ;

[0021] Figure 5 A schematic cross-sectional view of a local structure of the first embodiment Figure 2 ;

[0022] Figure 6 This is a schematic diagram of the internal structure of the heat-conducting tube in Example 1;

[0023] Figure 7 A schematic cross-sectional view of a local structure of the first embodiment Figure 3 ;

[0024] Figure 8 for Figure 7 The enlarged schematic diagram of point B in the middle;

[0025] Fig. 9 for Figure 8 Schematic diagram of partial structure section;

[0026] Fig.10 Schematic diagram of the second structure.

[0027] In the figure: 1, shell; 101, smoke inlet pipe; 102, smoke outlet; 2, heat conduction tube; 201, smoke chamber; 202, filter tube; 2021, baffle; 203, filter hole; 204, air outlet; 3, cleaning brush; 301, first gear; 302, second gear; 303, rotating tube; 304, rotating shaft; 305, fan blade; 306, first support frame; 4, water pump; 401, first conveying pipe; 402, hollow plate; 403, spray pipe; 40 4. Nozzle; 405. Second delivery pipe; 406. Second support frame; 407. Accommodating groove; 408. Rotating disk; 409. Rotating groove; 410. Rotating ring; 5. Filter; 501. Collecting port; 502. Collecting plate; 503. Through hole; 504. Cleaning plate; 505. Connecting frame; 6. Collecting box; 601. Collecting channel; 602. Sealing plate; 603. Bolt; 604. Sealing pad; 7. Liquid injection port; 8. Support column; 9. Rotating motor. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1:

[0030] refer to Figure 1-9 A coal-fired boiler flue gas treatment device comprises a shell 1, a smoke inlet pipe 101 is provided on one side of the shell 1, a smoke outlet 102 is provided on the top of the shell 1, a spray device is provided in the shell 1, a heat-conducting tube 2 is provided at the bottom of the shell 1, and the heat-conducting tube 2 can be fixedly connected to the bottom of the shell 1 through a support column 8. The heat-conducting tube 2 is connected to the bottom of the shell 1 through the support column 8, so that more space can be left between the heat-conducting tube 2 and the bottom of the shell 1, and more desulfurizer can be stored. Secondly, a liquid injection port 7 can be provided on one side of the shell 1 to facilitate the staff to add desulfurizer. A smoke chamber 201 is provided inside the heat-conducting tube 2, and the smoke inlet pipe 101 extends into the smoke chamber 201. A plurality of filter tubes 202 for filtering particulate matter in the smoke are fixedly connected to the top of the smoke chamber 201, and one end of each filter tube 202 extends to the outside of the heat-conducting tube 2, and the filter tube 202 is provided with a plurality of filter holes 203 on the outer surface of one end of the smoke chamber 201.

[0031] When in use, the staff connects the smoke exhaust pipe of the boiler to the smoke inlet pipe 101, and the smoke enters the smoke chamber 201 from the smoke inlet pipe 101, and the particulate matter in the smoke is filtered through the filter cartridge 202 in the smoke chamber 201. The filtered smoke enters the shell 1 through the air outlet 204 inside the filter cartridge 202, and then the smoke is desulfurized by the spray device to achieve better environmental protection effects and emission standards.

[0032] The outer surface of the filter cartridge 202 away from the heat-conducting cartridge 2 is provided with a plurality of air outlets 204, and the horizontal height of the air outlets 204 is greater than the horizontal height of the heat-conducting cartridge 2, so that when the spray device is working, the probability of the desulfurizer entering the inside of the filter cartridge 202 through the air outlets 204 can be reduced, and a cleaning device for cleaning the outer surface of each filter cartridge 202 is provided inside the smoke chamber 201. The cleaning device can timely remove dust accumulated on the surface of the filter cartridge 202, maintain the good filtering performance of the filter cartridge 202, thereby ensuring that the flue gas treatment equipment can operate continuously and stably, and maintain a high flue gas treatment efficiency.

[0033] Specifically, the cleaning device includes a cleaning brush 3 respectively arranged on the outer surface of each filter cartridge 202, a transmission mechanism connected to each cleaning brush 3, and a driving assembly that drives the transmission mechanism to drive the cleaning brush 3 to clean the outer surface of the filter cartridge 202. The transmission mechanism includes a first gear 301 and a plurality of second gears 302. Each filter cartridge 202 is arranged circumferentially with the heat-conducting cartridge 2 as the center of the circle. Each second gear 302 is rotatably connected to the outer surface of each filter cartridge 202. The cleaning brush 3 is fixedly connected to the second gear 302, and the bristles of the cleaning brush 3 are in contact with the outer surface of the filter cartridge 202. The first gear 301 is arranged at the top of the smoke-containing chamber 201 and is rotatably connected to the top of the containing chamber, and each second gear 302 is meshed with the first gear 301. By setting the first gear 301 and the second gear 302, when it is necessary to clean the outer surface of the filter cartridge 202, it is only necessary to rotate the first gear 301 or the second gear 302, and each second gear 302 will rotate synchronously, which helps to save energy costs.

[0034] The driving assembly includes a rotating cylinder 303, a rotating shaft 304, and a plurality of fan blades 305. A first support frame 306 is fixedly connected to the smoke outlet 102. The rotating shaft 304 is rotatably connected to the first support frame 306. The rotating cylinder 303 is arranged on a side of the rotating shaft 304 close to the support frame. The fan blades 305 are respectively arranged on the outer surface of the rotating cylinder 303 and are fixedly connected to the rotating cylinder 303. One end of the rotating shaft 304 extends into the smoke containing chamber 201 and is fixedly connected to the first gear 301.

[0035] When in use, the staff connects the smoke exhaust pipe of the boiler to the smoke inlet pipe 101 (the delivery speed of the smoke can be accelerated by a delivery pump). The smoke will enter the smoke chamber 201 from the smoke inlet pipe 101, and the particulate matter in the smoke will be filtered through the filter cartridge 202 in the smoke chamber 201. The filtered smoke will enter the interior of the housing 1 through the air outlet 204 inside the filter cartridge 202. When the smoke is discharged from the smoke outlet 102 through the spray device, it will drive the fan blades 305 to rotate, and then drive the rotating shaft 304 to rotate through the rotating cylinder 303. The other end of the rotating shaft 304 will drive the first gear 301 to rotate, and the first gear 301 will drive each second gear 302 to rotate synchronously. The second gear 302 further drives the cleaning brush 3 to clean the outer surface of the filter cartridge 202 to prevent clogging, thereby improving the filtration efficiency of the filter cartridge 202.

[0036] The drive assembly in this embodiment uses the flow of smoke through the fan blades 305 to drive the rotating shaft 304 to rotate, reducing the risk of failure caused by an additional drive source and improving the overall reliability and stability of the system. At the same time, reducing the need for additional electricity or power sources helps save energy costs.

[0037] Furthermore, the spray device includes a water pump 4, a first delivery pipe 401, a hollow disk 402, a plurality of spray pipes 403 and a nozzle 404 arranged on each spray pipe 403, the water pump 4 is connected to the interior of the shell 1, the hollow disk 402 is arranged inside the shell 1 and is fixedly connected to the inner wall of the shell 1 through a second support frame 406, one end of the first delivery pipe 401 is connected to the water pump 4, and the other end of the first delivery pipe 401 is connected to the interior of the hollow disk 402, each spray pipe 403 is arranged on the outer surface of the rotating shaft 304 and is fixedly connected to the rotating shaft 304, and each spray pipe 403 is connected to the interior of the hollow disk 402 through the second delivery pipe 405. A receiving groove 407 is provided at the bottom of the hollow disk 402, and a rotating disk 408 is rotatably connected in the receiving groove 407. Rotating grooves 409 are provided on both sides of the receiving groove 407, and rotating rings 410 are provided on both sides of the rotating disk 408. The rotating rings 410 are rotatably connected to the inner wall of the rotating groove 409. One end of the second delivery pipe 405 is fixedly connected to the rotating disk 408, and a delivery hole is provided on the rotating disk 408 to ensure that the second delivery pipe 405 is in a connected state with the inside of the hollow disk 402, and the other end of the second delivery pipe 405 is connected to the inside of the spray pipe 403.

[0038] When the staff starts the water pump 4, the water pump 4 will extract the desulfurizer inside the shell 1 and transport it to the inside of the hollow disk 402 through the first delivery pipe 401. The hollow disk 402 will transport the desulfurizer to the spray pipe 403 through the second delivery pipe 405, and spray it out from the nozzle 404. When the spray pipe 403 rotates under the action of the rotating shaft 304, the second delivery pipe 405 will drive the rotating disk 408 to rotate in the rotating groove 409, thereby ensuring that the desulfurizer sprayed by the nozzle 404 during the rotation of the spray pipe 403 will not be intermittent, ensuring the stability of the nozzle 404 when working. Secondly, the rotating nozzle 404 can evenly spray the desulfurizer inside the shell 1, ensuring that the desulfurizer can fully contact the sulfur oxides in the flue gas and improve the desulfurization effect. Secondly, a ceramic corrugated filler can be set in the shell 1 and placed between the nozzle 404 and the heat-conducting cylinder 2. Ceramic corrugated packing can increase the contact area between flue gas and water mist, thereby further improving the desulfurization effect.

[0039] In this embodiment, the rotation of the nozzle 404 does not require an additional driving source, thereby reducing energy costs. When the nozzle 404 sprays the desulfurizer, part of the desulfurizer may not react completely with the flue gas, and the unreacted desulfurizer will fall to the bottom of the shell 1 due to gravity. The water pump 4 will reuse the unreacted desulfurizer for recycling, thereby reducing the demand for new desulfurizer and reducing costs.

[0040] When the desulfurizer is sprayed from the nozzle 404, a part of the desulfurizer may be sprayed onto the outer surface of the filter cartridge 202. When the flue gas flows out from the gas outlet 204, these desulfurizers may react with it and form precipitates. These sediments may adhere to the surface of the air outlet, causing the problem of clogging. In order to avoid this situation, a baffle 2021 is provided on the side of each filter cartridge 202 away from the heat-conducting cylinder 2, and the baffle 2021 is fixedly connected to the filter cartridge 202, and the cross-sectional area of ​​the baffle 2021 is larger than the cross-sectional area of ​​the filter cartridge 202, so that when the desulfurizer is sprayed, the baffle 2021 plays a shielding role, reducing the possibility of the desulfurizer adhering to the outer surface of the filter cartridge 202, thereby reducing the risk of clogging of the air outlet. The desulfurizer will fall to the surface of the heat-conducting cylinder 2 under the action of the baffle 2021. In order to reduce the risk of the desulfurizer accumulating on the top of the heat-conducting cylinder 2, the top of the heat-conducting cylinder 2 is designed to be a truncated cone-shaped structure. Such a slope design can make the desulfurizer automatically slide to the surface of the filter screen 5 under the influence of gravity, thereby reducing the possibility of the desulfurizer accumulating on the top of the heat-conducting cylinder 2 and improving the recovery rate of the desulfurizer.

[0041] In addition, when the flue gas enters the interior of the heat-conducting tube 2 through the smoke inlet pipe 101 (the heat-conducting tube 2 can be made of a heat-conducting material, which is not limited in this embodiment), the high temperature of the flue gas will heat the heat-conducting tube 2, and then heat the desulfurizer at the bottom of the shell 1. When the water pump 4 extracts the desulfurizer from the inside of the shell 1, the desulfurizer sprayed by the nozzle 404 will have a certain temperature. The heated desulfurizer can accelerate the reaction with sulfur oxides in the flue gas, shorten the reaction time, and improve the desulfurization efficiency. The rate of most chemical reactions increases with increasing temperature. According to the principles of chemical kinetics, an increase in temperature can increase the kinetic energy of the reactant molecules, increase the collision frequency and collision intensity between them, and thus accelerate the reaction rate. Heating can overcome the activation energy of the reaction (that is, the minimum energy required to start the reaction), so that more reactants can reach an activated state, thereby increasing the reaction rate.

[0042] When the desulfurizer reacts with the flue gas, calcium sulfate is formed, and most of these products are precipitated in solid form. In order to prevent these precipitates from mixing with the unreacted desulfurizer, a filter 5 is provided inside the housing 1. The outer side of the filter 5 is fixedly connected to the inner wall of the housing 1, and the inner side is fixedly connected to the outer wall of the heat-conducting tube 2. By providing the filter 5, the precipitate can be separated from the desulfurizer, preventing the water pump 4 from pumping the desulfurizer mixed with the precipitate into the nozzle 404, thereby avoiding clogging of the nozzle 404 and ensuring the stability of the nozzle 404 during operation.

[0043] When the filter 5 is used for a long time, it may be blocked, resulting in reduced filtering effect. In order to avoid this, a collecting port 501 is provided on one side of the filter 5, and a collecting plate 502 is fixedly connected to the collecting port 501, and the collecting plate 502 is arranged below the filter 5, and the collecting plate 502 is provided with a plurality of through holes 503 (the through holes 503 are used to filter the desulfurizer that has not been completely reacted to prevent the desulfurizer from accumulating on the surface of the collecting plate 502). A cleaning plate 504 for cleaning the surface of the filter 5 is provided on the top of the filter 5, and the cleaning plate 504 is fixedly connected to the rotating shaft 304 through a connecting frame 505.

[0044] When the rotating shaft 304 rotates, the rotating shaft 304 will drive the connecting frame 505 to rotate, and the connecting frame 505 will drive the cleaning plate 504 to clean the sediment on the surface of the filter 5 and drive the sediment to move. When the cleaning plate 504 moves to the collecting port 501, it will sweep the sediment it carries into the collecting plate 502 for collection. Through the set collecting port 501 and the cleaning plate 504, the sediment on the surface of the filter 5 can be accumulated in one place, which is convenient for the staff to collect. Secondly, the set cleaning plate 504 will clean the sediment accumulated on the surface of the filter 5, reduce the probability of blockage, and thus improve the filtering efficiency of the filter 5.

[0045] In order to facilitate the staff to clean the sediment on the collecting plate 502, a collecting box 6 is provided on the side of the shell 1 close to the collecting port 501, and the collecting box 6 is fixedly connected to the shell 1. A collecting channel 601 is provided inside the collecting box 6, and the collecting channel 601 is connected to the collecting port 501. The collecting plate 502 is tilted. When the staff needs to clean the sediment accumulated on the collecting plate 502, the sediment accumulated on the collecting plate 502 can be cleaned through the collecting channel 601. The tilted setting of the collecting plate 502 can make the sediment accumulate in one place under the influence of gravity, which is convenient for the staff to clean, thereby improving the work efficiency of the staff.

[0046] A sealing mechanism for sealing the collection channel 601 is provided on the side of the collection box 6 away from the shell 1. The sealing mechanism can prevent smoke leakage and ensure that smoke does not escape during the smoke treatment process, thereby improving the safety and efficiency of the smoke treatment process.

[0047] Specifically, the sealing mechanism includes a sealing plate 602 and a plurality of bolts 603. The sealing plate 602 is arranged on the side of the collection box 6 away from the shell 1. The bolts 603 are respectively arranged at the four corners of the sealing plate 602 and are threadedly connected to the collection box 6. A sealing gasket 604 is provided between the sealing plate 602 and the collection box 6.

[0048] The use of bolts 603 for connection can facilitate the staff to disassemble the sealing plate 602 and clean the sediment on the collecting plate 502 through the collecting channel 601. Secondly, the combination of the bolts 603 and the sealing gasket 604 can provide a reliable sealing effect, effectively prevent gas leakage, and ensure the safe and effective operation of the flue gas treatment equipment. Secondly, the pressure of the sealing gasket 604 can be controlled by adjusting the tightening force of the bolts 603 to adjust the sealing performance.

[0049] Working principle:

[0050] When in use, the staff connects the smoke exhaust pipe of the boiler to the smoke inlet pipe 101, and the smoke enters the smoke chamber 201 from the smoke inlet pipe 101, and the particulate matter in the smoke is filtered through the filter cartridge 202 in the smoke chamber 201. The filtered smoke enters the interior of the housing 1 through the air outlet 204 inside the filter cartridge 202.

[0051] Then start the water pump 4, which will extract the desulfurizer from the shell 1 and transport it to the inside of the hollow disk 402 through the first delivery pipe 401. The hollow disk 402 will transport the desulfurizer to the spray pipe 403 through the second delivery pipe 405, and spray it out from the nozzle 404. When the smoke after spraying is discharged from the smoke outlet 102, it will drive the fan blade 305 to rotate, and then drive the rotating shaft 304 to rotate through the rotating cylinder 303. The other end of the rotating shaft 304 will drive the first gear 301 to rotate, and the spray pipe 403 will rotate under the action of the rotating shaft 304, thereby driving each nozzle 404 to rotate, and then achieving uniform spraying.

[0052] At the same time, the other end of the rotating shaft 304 drives the first gear 301 to rotate, and the first gear 301 drives each second gear 302 to rotate synchronously. The second gear 302 further drives the cleaning brush 3 to clean the outer surface of the filter cartridge 202 to prevent clogging, thereby improving the filtering efficiency of the filter cartridge 202.

[0053] In addition, when the rotating shaft 304 rotates, the rotating shaft 304 will drive the connecting frame 505 to rotate, and the connecting frame 505 will drive the cleaning plate 504 to clean the sediment on the surface of the filter screen 5 and drive the sediment to move. When the cleaning plate 504 moves to the collecting port 501, the sediment it carries will be swept into the collecting plate 502 for collection. Through the provided collecting port 501 and the cleaning plate 504, the sediment on the surface of the filter screen 5 can be accumulated in one place, which is convenient for the staff to collect. The provided cleaning plate 504 can reduce the risk of blockage on the surface of the filter screen 5, thereby improving the filtering efficiency of the filter screen 5.

[0054] When the staff needs to clean the sediment on the collecting plate 502 , they can use a tool to unscrew the bolt 603 , and then disassemble the sealing plate 602 , and then clean the sediment accumulated on the collecting plate 502 through the collecting channel 601 .

[0055] Embodiment 2:

[0056] On the basis of the first embodiment, in order to ensure that the rotating shaft 304 can rotate, an additional driving source, such as a rotating motor 9, can be provided outside the housing 1, and the output end of the rotating motor 9 is connected to the rotating shaft 304 through a synchronous pulley mechanism or a sprocket mechanism (the synchronous pulley mechanism or the sprocket mechanism is the prior art well known to those skilled in the art, so it will not be described in detail here). When the air pressure inside the housing 1 is not enough to drive the fan blades 305 to rotate, the rotating motor 9 can be started, and the rotating motor 9 will drive the rotating shaft 304 to rotate, thereby rotating the fan blades 305, ensuring that the cleaning device can operate.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A coal-fired boiler flue gas treatment device, comprising a shell (1), a smoke inlet pipe (101) is provided on one side of the shell (1), a smoke outlet (102) is provided on the top of the shell (1), and a spray device is provided inside the shell (1), characterized in that: A heat-conducting cylinder (2) is provided at the bottom of the shell (1), a smoke-containing chamber (201) is provided inside the heat-conducting cylinder (2), the smoke inlet pipe (101) extends into the smoke-containing chamber (201), a plurality of filter cylinders (202) for filtering particulate matter in smoke are fixedly connected to the top of the smoke-containing chamber (201), and one end of each filter cylinder (202) extends to the outside of the heat-conducting cylinder (2), a plurality of filter holes (203) are provided on the outer surface of one end of the smoke-containing chamber (201), a plurality of air outlets (204) are provided on the outer surface of the filter cylinder (202) on a side away from the heat-conducting cylinder (2), and a cleaning device for cleaning the outer surface of each filter cylinder (202) is provided inside the smoke-containing chamber (201).

2. A coal-fired boiler flue gas treatment device according to claim 1, characterized in that: The cleaning device comprises a cleaning brush (3) respectively arranged on the outer surface of each filter cylinder (202), a transmission mechanism connected to each cleaning brush (3), and a driving assembly that drives the transmission mechanism to drive the cleaning brush (3) to clean the outer surface of the filter cylinder (202), the transmission mechanism comprises a first gear (301) and a plurality of second gears (302), each of the filter cylinders (202) is arranged circumferentially with the heat-conducting cylinder (2) as the center, each of the second gears (302) is rotatably connected to the outer surface of each filter cylinder (202), the cleaning brush (3) is fixedly connected to the second gear (302), the first gear (301) is arranged at the top of the smoke containing chamber (201) and is rotatably connected to the top of the containing chamber, and each of the second gears (302) is meshed with the first gear (301).

3. A coal-fired boiler flue gas treatment device according to claim 2, characterized in that: The driving assembly comprises a rotating cylinder (303), a rotating shaft (304), and a plurality of fan blades (305); a first support frame (306) is fixedly connected to the smoke outlet (102); the rotating shaft (304) is rotatably connected to the first support frame (306); the rotating cylinder (303) is arranged on a side of the rotating shaft (304) close to the support frame; each of the fan blades (305) is respectively arranged on the outer surface of the rotating cylinder (303) and is fixedly connected to the rotating cylinder (303); one end of the rotating shaft (304) extends into the smoke containing chamber (201) and is fixedly connected to the first gear (301).

4. A coal-fired boiler flue gas treatment device according to claim 3, characterized in that: The spray device comprises a water pump (4), a first delivery pipe (401), a hollow disk (402), a plurality of spray pipes (403), and a spray head (404) arranged on each spray pipe (403); the water pump (4) is communicated with the interior of a shell (1); the hollow disk (402) is arranged inside the shell (1) and is fixedly connected to the inner wall of the shell (1) via a second support frame (406); one end of the first delivery pipe (401) is connected to the water pump (4); the other end of the first delivery pipe (401) is communicated with the interior of the hollow disk (402); each of the spray pipes (403) is arranged on the outer surface of a rotating shaft (304) and is fixedly connected to the rotating shaft (304); and each of the spray pipes (403) is communicated with the interior of the hollow disk (402) via a second delivery pipe (405).

5. A coal-fired boiler flue gas treatment device according to claim 4, characterized in that: The bottom of the hollow disk (402) is provided with a receiving groove (407), a rotating disk (408) is rotatably connected in the receiving groove (407), rotating grooves (409) are provided on both sides of the receiving groove (407), rotating rings (410) are provided on both sides of the rotating disk (408), and the rotating rings (410) are rotatably connected to the inner wall of the rotating groove (409), one end of the second conveying pipe (405) is fixedly connected to the rotating disk (408), and the other end of the second conveying pipe (405) is communicated with the inside of the spray pipe (403).

6. A coal-fired boiler flue gas treatment device according to claim 4, characterized in that: A filter screen (5) is further provided inside the shell (1); the outer side of the filter screen (5) is fixedly connected to the inner wall of the shell (1); the inner side of the filter screen (5) is fixedly connected to the outer wall of the heat-conducting tube (2); a collecting port (501) is provided on one side of the filter screen (5); a collecting plate (502) is fixedly connected to the collecting port (501); the collecting plate (502) is provided below the filter screen (5); the collecting plate (502) is provided with a plurality of through holes (503); a cleaning plate (504) for cleaning the surface of the filter screen (5) is provided on the top of the filter screen (5); and the cleaning plate (504) is fixedly connected to the rotating shaft (304) via a connecting frame (505).

7. A coal-fired boiler flue gas treatment device according to claim 6, characterized in that: A collecting box (6) is provided on a side of the shell (1) close to the collecting port (501), and the collecting box (6) is fixedly connected to the shell (1); a collecting channel (601) is provided inside the collecting box (6), and the collecting channel (601) is connected to the collecting port (501); the collecting plate (502) is arranged at an angle; and a sealing mechanism for sealing the collecting channel (601) is provided on a side of the collecting box (6) away from the shell (1).

8. The coal-fired boiler flue gas treatment equipment according to claim 6, characterized in that: The top of the heat-conducting cylinder (2) is in a truncated cone-shaped structure, and a baffle (2021) is provided on the side of each filter cylinder (202) away from the heat-conducting cylinder (2), and the baffle (2021) is fixedly connected to the filter cylinder (202).

9. A coal-fired boiler flue gas treatment device according to claim 7, characterized in that: The sealing mechanism comprises a sealing plate (602) and a plurality of bolts (603); the sealing plate (602) is arranged on a side of the collection box (6) away from the housing (1); the bolts (603) are arranged at four corners of the sealing plate (602) and are threadedly connected to the collection box (6); and a sealing gasket (604) is provided between the sealing plate (602) and the collection box (6).

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