Boiler flue gas purification device

Abstract

The invention discloses a boiler flue gas purification device which comprises a mounting frame fixedly connected with a neutralization box and a filter box, and further comprises a spraying mechanism, a suction mechanism, a filter cartridge, a cleaning mechanism, a first driving mechanism and a second driving mechanism, a neutralizing agent is contained in the spraying mechanism, and the spraying mechanism is partially rotationally arranged in the neutralizing box and used for atomizing and spraying out the neutralizing agent; the suction mechanism is arranged at the top of the neutralization box and is connected with a suction pipe, and the suction pipe partially extends into the neutralization box; the filter cartridge is rotationally arranged in the filter box and is connected with a smoke exhaust pipe capable of extending into the neutralization box; the cleaning mechanism movably penetrates through the interior of the filter box and abuts against the outer wall of the filter cartridge; the first driving mechanism is arranged on the outer wall of the neutralization box, is connected with the spraying mechanism and the suction mechanism and is used for driving the spraying mechanism to rotate and enabling the suction mechanism to suck smoke through a suction pipe.

Description

Technical Field

[0001] This application relates to the technical field of flue gas purification, and particularly to a boiler flue gas purification device. Background Art

[0002] A boiler is an energy conversion device. The energy input into the boiler includes the chemical energy in fuel and electric energy, and the boiler outputs steam, high-temperature water or organic heat carriers with a certain amount of heat energy. Industrial boiler products are divided into two types. One is steam, which is used for power generation or gas supply. For example, a fertilizer plant can use steam for vaporization. Using coal as raw material to synthesize fertilizers is a typical industrial boiler. Most industrial boilers still use coal as fuel. Gas-fired ones are generally waste heat boilers for recovering waste heat. The common industrial boiler is a circulating fluidized bed boiler. Industrial boilers are important thermal energy power equipment.

[0003] During the use of a boiler, a large amount of flue gas will be generated. If such flue gas is directly discharged, it will cause extremely bad damage to the atmospheric environment and at the same time affect people's lives, physical and mental health. The existing boiler flue gas purification device uses a filter screen to filter the flue gas. When in use, it is easy to adhere to dust and become blocked, resulting in poor filtering effect. Moreover, it does not have a mechanism for cleaning the filter screen and cannot perform self-cleaning. The flue gas in the existing boiler flue gas purification device is also prone to move around, affecting the discharge rate in the purification device and resulting in low purification efficiency. Summary of the Invention

[0004] This application provides a boiler flue gas purification device, which can improve the filtering effect of flue gas, can effectively clean the filter cylinder in multiple directions, can also reduce environmental pollution, make the flue gas flow upward quickly to purify more flue gas, and improve the purification efficiency of flue gas.

[0005] In a first aspect, this application provides a boiler flue gas purification device, including a mounting frame fixedly connected with a neutralization box and a filtration box. The filtration box is connected with a smoke inlet pipe, and further includes a spraying mechanism, a suction mechanism, a filter cylinder, a cleaning mechanism, a first driving mechanism and a second driving mechanism; the spraying mechanism contains a neutralizing agent inside, and part of the spraying mechanism is rotatably arranged in the neutralization box for atomizing and spraying the neutralizing agent; the suction mechanism is arranged on the top of the neutralization box, and the suction mechanism is connected with a suction pipe, and part of the suction pipe extends into the neutralization box; the filter cylinder is rotatably arranged inside the filtration box, and the filter cylinder is connected with a smoke exhaust pipe that can extend into the neutralization box; the cleaning mechanism movably passes through the inside of the filtration box and abuts against the outer wall of the filter cylinder; the first driving mechanism is arranged on the outer wall of the neutralization box, and the first driving mechanism is connected with the spraying mechanism and the suction mechanism to drive the spraying mechanism to rotate while enabling the suction mechanism to suck the flue gas through the suction pipe; the second driving mechanism is arranged on the outer wall of the filtration box, and the second driving mechanism is connected with the filter cylinder and the cleaning mechanism to drive the filter cylinder to rotate while enabling the cleaning mechanism to reciprocate vertically.

[0006] In some of these embodiments, the spraying mechanism includes an adapter box, a transmission pipe, a spray pipe, a storage tank, a pressurized water pump, and a water delivery pipe; the adapter box is fixedly embedded in the top of the neutralization box; one end of the transmission pipe rotatably passes through the adapter box and extends into the neutralization box, and the other end is connected to the first driving mechanism. The part of the transmission pipe located inside the adapter box is provided with a water inlet hole; the spray pipe is located inside the neutralization box and is connected to one end of the transmission pipe, and a plurality of atomizing nozzles are provided on the spray pipe; the storage tank is fixedly connected to the neutralization box, and a neutralizing agent is accommodated inside the storage tank; the pressurized water pump is arranged on the top of the neutralization box and is connected to the storage tank; one end of the water delivery pipe is connected to the pressurized water pump, and the other end extends into the inside of the adapter box; the suction mechanism includes a smoke outlet pipe, a mounting pipe, a rotating shaft, and a plurality of fan blades. The smoke outlet pipe is connected to the suction pipe. One end of the mounting pipe is connected to the smoke outlet pipe, and the other end is fixedly embedded in the top of the neutralization box. One end of the rotating shaft is rotatably connected to the mounting pipe and extends into the smoke outlet pipe. The plurality of fan blades are located inside the smoke outlet pipe and are fixedly connected to the rotating shaft; the first driving mechanism includes a first driving motor and a transmission structure. The first driving motor is fixedly installed on the outer wall of the neutralization box. One end of the transmission structure is connected to the output shaft end of the first driving motor, and the other end is connected to the other end of the rotating shaft and the transmission pipe.

[0007] In some of these embodiments, the cleaning mechanism includes a vertical plate, a square cleaning bag, a push plate, and a spiral spring. The vertical plate movably passes through the filter box in the vertical direction; the square cleaning bag is located inside the filter box and is fixedly connected to the vertical plate. The square cleaning bag is provided with a plurality of bristles, and the square cleaning bag abuts against the outer wall of the filter cylinder; the push plate is fixedly connected to the vertical plate and is located outside the filter box, and the push plate abuts against the second driving mechanism; the spiral spring is sleeved on the vertical plate, and both ends of the spiral spring are respectively connected to the vertical plate and the outer wall of the filter box; the second driving mechanism includes a second driving motor, a driving column, a cam, a first bevel gear, and a second bevel gear; the second driving motor is connected to the outer wall of the filter box; one end of the driving column is fixedly connected to the output shaft end of the second driving motor, and the other end extends into the filter box; the cam is fixedly sleeved on the outer wall of the driving column and abuts against the push plate; the first bevel gear is fixedly connected to the other end of the driving column; the second bevel gear is fixedly connected to the filter cylinder and meshes with the first bevel gear; one end of the exhaust pipe is rotatably connected to the bottom of the neutralization box body, and the other end is rotatably and hermetically connected to the inner wall of the filter box and extends into the inside of the filter cylinder. A vertical scraper abutting against the inner wall of the filter cylinder is fixedly connected to the inner wall of the exhaust pipe, and a third bevel gear is fixedly connected to the outer wall of the exhaust pipe, and the third bevel gear meshes with the first bevel gear.

[0008] In some of these embodiments, a plurality of downwardly extending smoke discharge pipes are communicated with the part of the exhaust pipe located inside the neutralization box; a connecting ring is provided at the bottom of the filter box, the inner wall of the connecting ring is threadedly connected with a mounting ring, the mounting ring is fixedly connected with a dust filter bag, and the inside of the dust filter bag is communicated with the inside of the filter box.

[0009] Based on the boiler flue gas purification device of the embodiments of the present application, after a large amount of flue gas enters the filter box through the flue gas inlet pipe, it will successively pass through two opposite parts of the circumferential wall of the filter cylinder, which can filter the flue gas at least twice, achieving effective filtration of the flue gas and improving the filtration effect of the flue gas. After the second driving mechanism operates, it can make the filter cylinder rotate and make the cleaning mechanism move synchronously in the vertical direction. The rotation of the filter cylinder is not conducive to the attachment of impurities in the flue gas, and the cleaning mechanism can contact the outer wall of the filter cylinder, which can cooperate with the rotation of the filter cylinder to clean the outer wall of the filter cylinder in multiple directions, expand the cleaning range of the outer wall of the filter cylinder, improve the cleaning effect, prevent the filter cylinder from being blocked, enable a large amount of flue gas to pass through the filter cylinder more smoothly, purify more flue gas, and further improve the purification effect of the flue gas. When the first driving mechanism operates, it makes the spraying mechanism rotate in the neutralization box while atomizing and spraying the neutralizing agent. The rotation of the spraying mechanism can increase the atomizing spraying range of the neutralizing agent, make the neutralizing agent fully contact and react with the acidic substances in the flue gas, reduce the acidic components in the flue gas, reduce the emission of harmful substances, and reduce environmental pollution. The suction mechanism can suck the flue gas in the filter cylinder and the neutralization box. It cooperates with the filter cylinder to guide the flue gas to flow upward, reduces the turbulence of the flue gas to the surrounding, enables the flue gas to flow upward quickly, can purify more flue gas, and improves the purification efficiency of the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0011] Figure 1 is a three-dimensional structural schematic diagram of the boiler flue gas purification device of the present application;

[0012] Figure 2 is an internal structural schematic diagram of the boiler flue gas purification device of the present application;

[0013] Figure 3 is an internal structural schematic diagram of the filter box of the present application;

[0014] Figure 4 is an internal structural schematic diagram of the filter cylinder and the exhaust pipe of the present application;

[0015] Figure 5 is a structural schematic diagram of the spraying mechanism and the suction mechanism of the present application;

[0016] Figure 6 is Figure 5 an internal structural schematic diagram of the outlet flue gas pipe in

[0017] Figure 7This is a schematic structural diagram of the nozzle, atomizing nozzle, adapter box and transmission pipe of the present application;

[0018] Figure 8 This is a schematic structural diagram of the connecting ring, mounting ring and dust filter bag of the present application.

[0019] Explanation of reference numerals:

[0020] 1. Spraying mechanism; 11. Storage tank; 12. Pressurized water pump; 13. Nozzle; 131. Atomizing nozzle; 14. Adapter box; 141. Transmission pipe; 1411. Water inlet hole; 15. Neutralizing box; 2. Suction mechanism; 21. Installation pipe; 22. Suction pipe; 23. Smoke outlet pipe; 24. Rotating shaft; 241. Fan blade; 3. Cleaning mechanism; 31. Vertical plate; 32. Square cleaning bag; 321. Brush bristles; 33. Pushing plate; 4. Second driving mechanism; 41. Second driving motor; 42. Cam; 43. Driving column; 44. First bevel gear; 45. Second bevel gear; 5. First driving mechanism; 51. First driving motor; 52. Transmission structure; 6. Filter cartridge; 61. Filter box; 611. Smoke inlet pipe; 612. Connecting ring; 7. Exhaust pipe; 71. Smoke discharge pipe; 72. Third bevel gear; 73. Vertical scraper; 8. Dust filter bag; 81. Mounting ring.

[0021] The realization of the purpose, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0022] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0023] Please refer to Figures 1 to 8, this application proposes a boiler flue gas purification device, which includes a mounting frame fixedly connected with a neutralization box 15 and a filtration box 61. The filtration box 61 is connected with a smoke inlet pipe 611. It also includes a spraying mechanism 1, a suction mechanism 2, a filter cylinder 6, a cleaning mechanism 3, a first driving mechanism 5 and a second driving mechanism 4. The spraying mechanism 1 contains a neutralizing agent inside, and a part of the spraying mechanism 1 is rotatably arranged in the neutralization box 15 for atomizing and spraying the neutralizing agent. The suction mechanism 2 is arranged on the top of the neutralization box 15, and the suction mechanism 2 is connected with a suction pipe 22, and a part of the suction pipe 22 extends into the neutralization box 15. The filter cylinder 6 is rotatably arranged inside the filtration box 61, and the filter cylinder 6 is connected with a smoke exhaust pipe 7 that can extend into the neutralization box 15. The cleaning mechanism 3 movably penetrates inside the filtration box 61 and abuts against the outer wall of the filter cylinder 6. The first driving mechanism 5 is arranged on the outer wall of the neutralization box 15, and the first driving mechanism 5 is connected with the spraying mechanism 1 and the suction mechanism 2, so as to drive the spraying mechanism 1 to rotate while enabling the suction mechanism 2 to suck the flue gas through the suction pipe 22. The second driving mechanism 4 is arranged on the outer wall of the filtration box 61, and the second driving mechanism 4 is connected with the filter cylinder and the cleaning mechanism 3, so as to drive the filter cylinder to rotate while enabling the cleaning mechanism 3 to reciprocate vertically.

[0024] In the embodiments provided by this application, after a large amount of flue gas enters the filtration box 61 through the smoke inlet pipe 611, it will successively pass through two opposite parts of the peripheral wall of the filter cylinder 6, which can filter the flue gas at least twice, realize the effective filtration of the flue gas, and improve the filtration effect of the flue gas. After the second driving mechanism 4 operates, the filter cylinder 6 can rotate self - clockwise, and the cleaning mechanism 3 can move synchronously in the vertical direction. The self - rotation of the filter cylinder 6 is not conducive to the adhesion of impurities in the flue gas, and the cleaning mechanism 3 can contact the outer wall of the filter cylinder 6, can clean the outer wall of the filter cylinder 6 in multiple directions, and can expand the cleaning range of the outer wall of the filter cylinder 6, improve the cleaning effect, prevent the filter cylinder 6 from being blocked, enable a large amount of flue gas to pass through the filter cylinder 6 more smoothly, make more flue gas purified, and further improve the purification effect of the flue gas.

[0025] The flue gas passes through the filter cylinder 6 and enters the neutralization box 15 through the smoke exhaust pipe 7. The first driving mechanism 5 operates, causing the spraying mechanism 1 to rotate in the neutralization box 15 while atomizing and spraying the neutralizing agent. The rotation of the spraying mechanism 1 can increase the atomizing and spraying range of the neutralizing agent, enable the neutralizing agent to fully contact and react with the acidic substances in the flue gas, reduce the acidic components in the flue gas, reduce the emission of harmful substances, reduce environmental pollution, and further improve the flue gas purification effect. Moreover, it can also prevent the acidic substances in the flue gas from corroding the boiler flue gas purification device.

[0026] While the spraying mechanism 1 is rotating, under the drive of the first drive mechanism 5, the suction mechanism 2 can suck the flue gas in the filter cartridge 6 and the neutralization tank 15. It cooperates with the filter cartridge 6 to guide the flue gas to flow upward, reducing the lateral leakage of the flue gas, enabling the flue gas to flow upward rapidly, purifying more flue gas, and improving the purification efficiency of the flue gas.

[0027] In some embodiments of the present application, the spraying mechanism 1 includes an adapter box 14, a transmission pipe 141, a spray pipe 13, a storage tank 11, a pressurizing water pump 12, and a water delivery pipe; the adapter box 14 is fixedly embedded in the top of the neutralization tank 15; one end of the transmission pipe 141 rotatably penetrates through the adapter box 14 and extends into the neutralization tank 15, and the other end is connected to the first drive mechanism 5. The part of the transmission pipe 141 located inside the adapter box 14 is provided with a water inlet hole 1411; the spray pipe 13 is located inside the neutralization tank 15 and is connected to one end of the transmission pipe 141, and a plurality of atomizing nozzles 131 are provided on the spray pipe 13; the storage tank 11 is fixedly connected to the neutralization tank 15, and a neutralizing agent is accommodated inside the storage tank 11; the pressurizing water pump 12 is arranged on the top of the neutralization tank 15 and is connected to the storage tank 11; one end of the water delivery pipe is connected to the pressurizing water pump 12, and the other end extends into the interior of the adapter box 14.

[0028] When the first drive mechanism 5 operates, it will drive the transmission pipe 141 to rotate, and the transmission pipe 141 will drive the spray pipe 13 and a plurality of atomizing nozzles 131 to rotate at the top inside the neutralization tank 15. The pressurizing water pump 12 is started to pump the neutralizing agent in the storage tank 11 into the adapter box 14. The neutralizing agent in the adapter box 14 will flow into the spray pipe 13 through the water inlet hole 1411 and be atomized and sprayed by a plurality of atomizing nozzles 131. The setting of the adapter box 14 can prevent interference between the transmission pipe 141 and the water delivery pipe when the transmission pipe 141 rotates.

[0029] In some embodiments of the present application, the suction mechanism 2 includes a smoke outlet pipe 23, a mounting pipe 21, a rotating shaft, and a plurality of fan blades 241. The smoke outlet pipe 23 is connected to the suction pipe 22. One end of the mounting pipe 21 is connected to the smoke outlet pipe 23, and the other end is fixedly embedded in the top of the neutralization tank 15. One end of the rotating shaft is rotatably connected to the mounting pipe 21 and extends into the smoke outlet pipe 23. A plurality of fan blades 241 are located inside the smoke outlet pipe 23 and are fixedly connected to the rotating shaft; the first drive mechanism 5 includes a first drive motor 51 and a transmission structure 52. The first drive motor 51 is fixedly installed on the outer wall of the neutralization tank 15. One end of the transmission structure 52 is connected to the output shaft end of the first drive motor 51, and the other end is connected to the other end of the rotating shaft and the transmission pipe 141.

[0030] The transmission structure 52 includes a driving pulley, a driven pulley and a synchronous belt. The driving pulley is connected to the output end of the first driving motor 51. The upper surface and the lower surface of the driven pulley are respectively fixedly connected to a rotating shaft and a transmission pipe 141. The two ends of the synchronous belt are respectively connected to the driving pulley and the driven pulley. When the first driving motor 51 is started, the driven pulley rotates, driving the rotating shaft and the transmission pipe 141 to rotate, and further causing a plurality of fan blades 241 to rotate, generating a negative pressure in the smoke outlet pipe 23, which can suck the flue gas in the neutralizing box 15 and the filtering box 61 upward, and at the same time can drive the spray pipe 13 to rotate.

[0031] In some embodiments of the present application, the cleaning mechanism 3 includes a vertical plate 31, a square cleaning bag 32, a push plate 33 and a spiral spring. The vertical plate 31 is movably inserted into the filtering box 61 in the vertical direction; the square cleaning bag 32 is located inside the filtering box 61 and is fixedly connected to the vertical plate 31. The square cleaning bag 32 is provided with a plurality of brush hairs 321, and the square cleaning bag 32 abuts against the outer wall of the filter cartridge 6; the push plate 33 is fixedly connected to the vertical plate 31 and is located outside the filtering box 61, and the push plate 33 abuts against the second driving mechanism 4; the spiral spring is sleeved on the vertical plate 31, and the two ends of the spiral spring are respectively connected to the vertical plate 31 and the outer wall of the filtering box 61.

[0032] When cleaning the outer wall of the filter cartridge 6, the second driving mechanism 4 operates, causing the filter cartridge 6 to rotate while making the push plate 33 move downward, driving the vertical plate 31 to move downward. The square cleaning bag 32 contacts the outer wall of the filter cartridge 6 and moves downward. The square cleaning bag 32 can be pressed tightly against the filter cartridge 6 to improve the cleaning effect on the outer wall of the filter cartridge 6. During the downward movement of the vertical plate 31, the spiral spring will be stretched and will move upward under the elastic force of the spiral spring, so as to realize the reciprocating movement of the vertical plate 31 and the square cleaning bag 32 in the vertical direction while the filter cartridge 6 rotates. Among them, the outer surface of the square cleaning bag 32 can be coated with heat-insulating paint.

[0033] In some embodiments of the present application, the second driving mechanism 4 includes a second driving motor 41, a driving column 43, a cam 42, a first bevel gear 44 and a second bevel gear 45; the second driving motor 41 is connected to the outer wall of the filtering box 61; one end of the driving column 43 is fixedly connected to the output shaft end of the second driving motor 41, and the other end extends into the filtering box 61; the cam 42 is fixedly sleeved on the outer wall of the driving column 43 and abuts against the push plate 33; the first bevel gear 44 is fixedly connected to the other end of the driving column 43; the second bevel gear 45 is fixedly connected to the filter cartridge 6 and meshes with the first bevel gear 44.

[0034] When the second driving motor 41 is started, it drives the driving column 43 to rotate, and further causes the first bevel gear 44 and the cam 42 to rotate. The first bevel gear 44 and the second bevel gear 45 are meshed and transmitted, which can cause the second bevel gear 45 to drive the filter cartridge 6 to rotate. The rotation of the cam 42 can continuously push the push plate 33 downward, and cooperate with the spiral spring to realize the up-and-down reciprocating movement of the vertical plate 31.

[0035] In some embodiments of the present application, one end of the exhaust pipe 7 is rotatably connected to the bottom of the neutralization box 15, and the other end is rotatably and sealingly connected to the inner wall of the filter box 61 and extends into the interior of the filter cylinder 6. A vertical scraper 73 that abuts against the inner wall of the filter cylinder 6 is fixedly connected to the inner wall of the exhaust pipe 7, and a third bevel gear 72 is fixedly connected to the outer wall of the exhaust pipe 7. The third bevel gear 72 meshes with the first bevel gear 44

[0036] By providing the third bevel gear 72, the exhaust pipe 7 can be rotated while the vertical plate 31 and the filter cylinder 6 are moving. Both the third bevel gear 72 and the second bevel gear 45 mesh with the first bevel gear 44, so that the rotation direction of the exhaust pipe 7 is opposite to that of the filter cylinder 6. In this way, the rotation direction of the vertical scraper 73 can be opposite to that of the filter cylinder 6, which can effectively clean the inner wall of the filter cylinder 6, realizing the simultaneous rotation of the filter cylinder 6 and the cleaning of the inner and outer walls of the filter cylinder 6, and further improving the cleaning effect of the filter cylinder 6.

[0037] In some embodiments of the present application, a plurality of smoke discharge pipes 71 extending downward are communicated with the part of the exhaust pipe 7 located in the neutralization box 15. With such a setting, it is possible to prevent the spraying mechanism 1 above the neutralization box 15 from spraying the neutralizing agent into the exhaust pipe 7. Moreover, the flue gas will flow downward from the smoke discharge pipes 71 into the neutralization box 15, and the downward flowing flue gas will slowly resume the upward trend, which can increase the time of the flue gas in the neutralization box 15 and the contact time with the atomized neutralizing agent, and further reduce the emission of harmful substances in the flue gas.

[0038] In some embodiments of the present application, a connecting ring 612 is provided at the bottom of the filter box 61. The inner wall of the connecting ring 612 is threadedly connected to a mounting ring 81, and the mounting ring 81 is fixedly connected to a dust filter bag 8. The interior of the dust filter bag 8 is communicated with the interior of the filter box 61. In this way, when the cleaning mechanism 3 cleans the filter cylinder 6, the impurities on the filter cylinder 6 will fall downward through the connecting ring 612 and enter the dust filter bag 8. The threaded connection between the connecting ring 612 and the mounting ring 81 facilitates the removal and installation of the dust filter bag 8.

[0039] Working principle: When in use, after a large amount of flue gas enters the filter box 61 through the smoke inlet pipe 611, it will pass through the filter cylinder 6, achieving effective filtration of the flue gas and improving the filtration effect of the flue gas. The second drive motor 41 is started to drive the drive column 43 to rotate, and then the cam 42 and the first bevel gear 44 rotate simultaneously. The first bevel gear 44 drives the second bevel gear 45 and the third bevel gear 72 to rotate synchronously. The cam 42 cooperates with the spiral spring to make the vertical plate 31 and the square cleaning bag 32 reciprocate in the vertical direction. The second bevel gear 45 drives the filter cylinder to rotate. When the square cleaning bag 32 moves, it always contacts the outer wall of the filter cylinder 6, and cooperating with the rotation of the filter cylinder 6 can better clean the outer wall of the filter cylinder 6. The third bevel gear 72 causes the exhaust pipe 7 to rotate, and the rotation direction of the exhaust pipe 7 is opposite to that of the filter cylinder 6, which can make the vertical scraper 73 rotate synchronously and effectively clean the inner wall of the filter cylinder 6. After the first drive motor 51 is started, the rotating shaft and the transmission pipe 141 rotate synchronously through the transmission structure 52. When the rotating shaft rotates, multiple fan blades 241 rotate to generate negative pressure to suck the flue gas to the smoke outlet pipe 23 and discharge it. When the transmission pipe 141 rotates, it drives the spray pipe 13 and multiple atomizing nozzles 131 to rotate. The neutralizing agent enters the adapter box 14 through the suction action of the water pump, enters the spray pipe 13 through the water inlet hole 1411 on the transmission pipe 141, and is atomized and sprayed into the neutralizing box 15 through the atomizing nozzles 131 to reduce the discharge of harmful substances in the flue gas.

[0040] In the attached drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of this application, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the attached drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0041] The above are only the preferred embodiments of this application and are not used to limit this application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

1. A boiler flue gas purification device, including a mounting frame fixedly connected with a neutralization box (15) and a filtration box (61), the filtration box (61) is connected with a smoke inlet pipe (611), characterized in that, Further included are: A spraying mechanism (1) which internally accommodates a neutralizing agent. The spraying mechanism (1) is partially rotatably arranged in the neutralizing tank (15) for atomizing and spraying the neutralizing agent; A suction mechanism (2) which is arranged at the top of the neutralizing tank (15). The suction mechanism (2) is connected with a suction pipe (22), and a part of the suction pipe (22) extends into the neutralizing tank (15); A filter cartridge (6) which is rotatably arranged inside the filter box (61). The filter cartridge (6) is connected with a smoke exhaust pipe (7) that can extend into the neutralizing tank (15); A cleaning mechanism (3) which movably penetrates inside the filter box (61) and abuts against the outer wall of the filter cartridge (6); A first driving mechanism (5) which is arranged on the outer wall of the neutralizing tank (15). The first driving mechanism (5) is connected with the spraying mechanism (1) and the suction mechanism (2) for driving the spraying mechanism (1) to rotate while enabling the suction mechanism (2) to suck in smoke through the suction pipe (22); And, A second driving mechanism (4) which is arranged on the outer wall of the filter box (61). The second driving mechanism (4) is connected with the filter cartridge and the cleaning mechanism (3) for driving the filter cartridge to rotate while enabling the cleaning mechanism (3) to reciprocate in the vertical direction.

2. The boiler flue gas purification device according to claim 1, characterized in that, The spraying mechanism (1) includes: An adapter box (14) which is fixedly embedded at the top of the neutralizing tank (15); A transmission pipe (141) with one end rotatably penetrating through the adapter box (14) and extending into the neutralizing tank (15), and the other end connected with the first driving mechanism (5). An inlet hole (1411) is provided at the part of the transmission pipe (141) located inside the adapter box (14); A spray pipe (13) which is located inside the neutralizing tank (15) and connected with one end of the transmission pipe (141). A plurality of atomizing nozzles (131) are provided on the spray pipe (13); A storage tank (11) which is fixedly connected with the neutralizing tank (15). The neutralizing agent is accommodated inside the storage tank (11); A pressurizing water pump (12) which is arranged at the top of the neutralizing tank (15) and connected with the storage tank (11); and, A water delivery pipe with one end connected with the pressurizing water pump (12) and the other end extending into the interior of the adapter box (14).

3. The boiler flue gas purification device according to claim 2, characterized in that, The suction mechanism (2) includes a smoke outlet pipe (23), a mounting pipe (21), a rotating shaft and a plurality of fan blades (241). The smoke outlet pipe (23) is connected with the suction pipe (22). One end of the mounting pipe (21) is connected with the smoke outlet pipe (23), and the other end is fixedly embedded at the top of the neutralizing tank (15). One end of the rotating shaft is rotatably connected with the mounting pipe (21) and extends into the smoke outlet pipe (23). The plurality of fan blades (241) are located inside the smoke outlet pipe (23) and fixedly connected with the rotating shaft; The first driving mechanism (5) includes a first driving motor (51) and a transmission structure (52). The first driving motor (51) is fixedly installed on the outer wall of the neutralizing box (15). One end of the transmission structure (52) is connected to the output shaft end of the first driving motor (51), and the other end is connected to the other end of the rotating shaft and the transmission pipe (141).

4. The boiler flue gas purification device according to claim 1, characterized in that, The cleaning mechanism (3) includes: A vertical plate (31) movably penetrating through the filter box (61) in the vertical direction; A square cleaning bag (32) located inside the filter box (61) and fixedly connected to the vertical plate (31). The square cleaning bag (32) is provided with a plurality of bristles (321), and the square cleaning bag (32) abuts against the outer wall of the filter cylinder (6); A push plate (33) fixedly connected to the vertical plate (31) and located outside the filter box (61). The push plate (33) abuts against the second driving mechanism (4); and A helical spring sleeved on the vertical plate (31), with both ends of the helical spring connected to the vertical plate (31) and the outer wall of the filter box (61) respectively.

5. The boiler flue gas purification device according to claim 4, characterized in that The second driving mechanism (4) includes: A second driving motor (41) connected to the outer wall of the filter box (61); A driving column (43) with one end fixedly connected to the output shaft end of the second driving motor (41) and the other end extending into the filter box (61); A cam (42) fixedly sleeved on the outer wall of the driving column (43) and abutting against the push plate (33); A first bevel gear (44) fixedly connected to the other end of the driving column (43); and A second bevel gear (45) fixedly connected to the filter cylinder (6) and meshing with the first bevel gear (44).

6. The boiler flue gas purification device according to claim 5, wherein, One end of the exhaust pipe (7) is rotatably connected to the bottom of the neutralizing box (15) body, and the other end is rotatably and sealingly connected to the inner wall of the filter box (61) and extends into the interior of the filter cylinder (6). A vertical scraper (73) abutting against the inner wall of the filter cylinder (6) is fixedly connected to the inner wall of the exhaust pipe (7). A third bevel gear (72) is fixedly connected to the outer wall of the exhaust pipe (7), and the third bevel gear (72) meshes with the first bevel gear (44).

7. The boiler flue gas purification device according to claim 1, wherein, The part of the exhaust pipe (7) located inside the neutralizing box (15) is communicated with a plurality of smoke discharging pipes (71) extending downward.

8. The boiler flue gas purification device according to claim 1, characterized in that A connecting ring (612) is provided at the bottom of the filter box (61). The inner wall of the connecting ring (612) is threadedly connected to a mounting ring (81). The mounting ring (81) is fixedly connected to a dust filter bag (8), and the interior of the dust filter bag (8) is communicated with the interior of the filter box (61).

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