Dedusting device for desulfurized and denitrated flue gas

Abstract

The utility model relates to the technical field of dust removal equipment, and discloses a desulfurized and denitrated flue gas dust removal device which comprises a machine body, a pretreatment chamber is arranged on the left side in the machine body, a filtering chamber is arranged on the right side in the machine body, and water circulation spraying mechanisms are arranged in the pretreatment chamber and on the rear side of the machine body; the water circulation spraying mechanism comprises a first supporting ring, a water tank, a water pump and a plurality of inner threaded pipes, and spraying pipes are connected into the first supporting ring in a penetrating mode. By arranging the water circulation spraying mechanism, the problems that accumulation of particulate matter is more likely to happen, and even equipment failures or performance reduction can be possibly caused can be solved, an external water pipe is connected with the water tank, clear water is conveyed into the water tank, and the water circulation spraying mechanism is used for spraying water. Water in the water tank is pumped through the water inlet pipe at the input end of the water pump, so that the performance of the flue gas dust removal device is improved, and negative effects caused by efficiency are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal equipment, in particular to a dust removal device for flue gas after desulfurization and denitrification. Background Art

[0002] With the acceleration of industrialization and urbanization, waste gas emissions from a large number of factories, power plants, and processing plants have become a serious environmental problem. Among them, harmful gases such as sulfur dioxide and nitrogen oxides produced by fuel combustion have caused serious pollution to the atmosphere and ecological environment, exacerbating problems such as acid rain and atmospheric particulate matter. Therefore, controlling the emission of these harmful gases has become an urgent need.

[0003] Various existing flue gas dust removal devices, such as electrostatic precipitators, bag filters, and wet electrostatic precipitators, have been widely developed and applied, significantly improving flue gas treatment efficiency and performance. Without a water circulation spray mechanism for preliminary treatment during dust removal, wet dust removal may not be possible. Wet dust removal effectively captures particulate matter and causes it to settle into a liquid. This can affect dust removal efficiency, especially for some suspended particulate matter, making it more susceptible to accumulation and buildup. This can increase equipment cleaning and maintenance requirements and even lead to equipment failure or performance degradation. After initial treatment, when entering the bag filter for processing, particulate matter may accumulate in the filter bag pores, causing blockage and increased resistance. This requires more frequent cleaning and replacement of the filter bags to avoid blockage and reduced dust removal efficiency. This increases equipment maintenance costs and downtime. Utility Model Content

[0004] The main purpose of this utility model is to provide a dust removal device for flue gas after desulfurization and denitrification, which can effectively solve the problem of being more susceptible to the accumulation and accumulation of particulate matter, which may increase the cleaning and maintenance requirements of the equipment, and may even cause equipment failure or performance degradation, and require more frequent cleaning and replacement of filter bags to avoid blockage and reduce dust removal efficiency. This will increase maintenance costs and downtime of the equipment.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a dust removal device for flue gas after desulfurization and denitrification, comprising a body, a pretreatment chamber is provided on the left side of the body, a filter chamber is provided on the right side of the body, and a water circulation spray mechanism is provided inside the pretreatment chamber and on the rear side of the body;

[0006] The water circulation spray mechanism includes: a first support ring, a water tank, a water pump and several internal threaded pipes, the interior of the first support ring is penetrated by a spray pipe, the front side wall of the water tank is arranged on the rear side wall of the machine body, the interior of the water tank is fixedly connected to a support block, the bottom wall of the water pump is fixedly connected to the upper side wall of the support block, the input end of the support block is penetrated by a water inlet pipe, the output end of the support block is penetrated by a water outlet pipe, the interior of the water tank is fixedly connected to a first filter plate, the top end of the water outlet pipe is communicated with a first delivery pipe, the right side of the first delivery pipe is penetrated and connected to the right side of the interior of the first support ring, and the bottoms of multiple spray pipes are connected. The ends are all connected with the first connecting pipe, the top ends of several of the internally threaded tubes are all connected to the bottom ends of the first connecting pipe, the bottom ends of several of the internally threaded tubes are internally threadedly connected to the externally threaded tubes, and the interiors of several of the externally threaded tubes are provided with second connecting pipes, the outsides of the top ends of several of the second connecting pipes are fixedly connected with fixing rings, the bottom ends of several of the fixing rings are arranged on the top ends of several externally threaded tubes, and the bottom ends of several of the second connecting pipes are internally connected with nozzles, an inclined pipe is connected through the bottom wall of the body, the rear side of the inclined pipe is connected through the interior of the water tank, and a filter is fixedly connected to the front side of the inclined pipe.

[0007] Furthermore, the left side wall of the body is connected to a feed pipe, the right side wall of the body is connected to a discharge pipe, valves are fixedly connected to the outside of the bottom of the pretreatment chamber and the filter chamber, and a first bracket is fixedly connected to the outside of the bottom wall of the body.

[0008] Furthermore, the right side of the pretreatment chamber and the left side of the filter chamber are fixedly connected with a guide plate, the bottom of the guide plate is fixedly connected with a guide plate, the inside of the guide plate is slidably connected with a second layer of filter plate, and the front side wall of the second layer of filter plate is fixedly connected with a baffle.

[0009] Furthermore, the interior of the filter chamber is fixedly connected to a second bracket, a second support ring is provided inside the filter chamber, the upper side walls of the second bracket are fixedly connected to a device box, the interiors of the four device boxes are fixedly connected to springs, the top ends of the four springs are fixedly connected to top blocks, the four top blocks are fixedly connected to the bottom wall of the second support ring, and the interior of the second support ring is fixedly connected to a dust bag collector.

[0010] Furthermore, the top wall of the guide rail plate is fixedly connected to the top plate, and the top wall of the top plate is fixedly connected to a protective box. A bidirectional motor is arranged inside the protective box. The front and rear output ends of the bidirectional motor are fixedly connected to a rotating rod, and the other ends of the two rotating rods are fixedly connected to an eccentric wheel, and the other sides of the two eccentric wheels are fixedly connected to a transfer rod, and the other sides of the two transfer rods are fixedly connected to the front and rear sides of the right side wall of the second support ring.

[0011] Furthermore, the rear side wall of the body is fixedly connected to a base plate, the top wall of the base plate is fixedly connected to an air bag, the top ends of the air bags are all connected to a second delivery pipe, the other ends of the four second delivery pipes are all connected to the inner top wall of the filter chamber, the bottoms of the four second delivery pipes are all connected to a blow pipe, and the outer sides of several of the blow pipes are arranged on the top of the bag dust collector.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The utility model is provided with a water circulation spray mechanism, which can solve the problem of being more susceptible to the accumulation and accumulation of particulate matter, which may increase the cleaning and maintenance requirements of the equipment and even cause equipment failure or performance degradation. The clean water is transferred to the water tank through the external water pipe connected to the water tank, and the water in the water tank is extracted through the water inlet pipe on the input end of the water pump, and then the water is transferred to the first delivery pipe through the water outlet pipe on the output end of the water pump to transfer the water to multiple spray pipes. After the transfer, the water will flow into the first connecting pipe at the bottom of the spray pipe to transfer the water to the internal threaded pipe, and the internal threaded pipe and the external threaded pipe are connected. The second connecting pipe inside the external threaded pipe is connected to support the second connecting pipe, and the water pressure drives the nozzle inside the bottom end of the second connecting pipe to drive the fixed ring on the top end of the second connecting pipe to rotate on the top end of the external threaded pipe to achieve the effect of rotating water spraying, to spray the flue gas inside the pretreatment chamber in all directions, to carry out preliminary treatment, to separate larger impurities and particulate matter, thereby effectively improving the effect of flue gas treatment, to prevent larger impurities and particulate matter from flowing to the rear device to cause certain harm to the equipment, thereby improving the performance of the flue gas dust removal device and reducing the negative impact of efficiency.

[0014] 2. The installation of the device box; spring, top block, air bag, second conveying pipe and blowing pipe can solve the problem of needing to clean and replace the filter bags more frequently to avoid blockage and reduce dust removal efficiency. This will increase the maintenance cost and downtime of the equipment. By fixing the second bracket in the filter chamber, protecting and supporting the spring through the device box on the upper side wall of the second bracket, and connecting the bottom of the second support ring through the top block on the top of the spring, the second support ring is supported and fixed. When the bag dust collector inside the second support ring needs to be cleaned, the eccentric wheel will be driven to rotate by the rotating rods on the front and rear output ends of the bidirectional motor on the top plate. The rotating eccentric wheel is connected to the front and rear sides of the second support ring through the adapter rod on the outside to change the motion trajectory of the adapter rod and drive the second support ring to swing left and right. When shaking, the bottom top block of the second support ring will squeeze the spring to produce a vibration effect to clean the bag dust collector, thereby effectively improving the dust removal efficiency and reducing maintenance costs. It cooperates with the air bag and the blow pipe to improve the cleaning effect of the bag dust collector and thus increase the service life of the equipment.

[0015] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural diagram of a flue gas dust removal device for desulfurization and denitrification proposed by the utility model;

[0017] Figure 2 This is an internal cross-sectional structural diagram of a flue gas dust removal device for desulfurization and denitrification proposed by the present invention;

[0018] Figure 3 This is a structural diagram of a water outlet pipe for a flue gas dust removal device after desulfurization and denitrification proposed by the utility model;

[0019] Figure 4 This is a cross-sectional structural diagram of the interior of a water tank for a flue gas dust removal device after desulfurization and denitrification proposed by the present invention;

[0020] Figure 5 This is a structural diagram of the first support ring of a flue gas dust removal device for desulfurization and denitrification proposed by the present invention;

[0021] Figure 6 This is a structural diagram of an internally threaded pipe for a flue gas dust removal device after desulfurization and denitrification proposed by the utility model;

[0022] Figure 7 This is a schematic diagram of the external threaded pipe connection for a flue gas dust removal device after desulfurization and denitrification proposed by the utility model;

[0023] Figure 8 This is a nozzle structure diagram of a flue gas dust removal device for desulfurization and denitrification proposed by the utility model;

[0024] Figure 9 This is a structural diagram of the first filter plate of a flue gas dust removal device for desulfurization and denitrification proposed by the utility model;

[0025] Figure 10 This is a structural diagram of a discharge pipe for a flue gas dust removal device after desulfurization and denitrification proposed by the utility model;

[0026] Figure 11 This is a structural diagram of a second bracket for a flue gas dust removal device after desulfurization and denitrification proposed by the present invention;

[0027] Figure 12 This is a structural diagram of the second support ring of a flue gas dust removal device after desulfurization and denitrification proposed by the utility model.

[0028] Legend:

[0029] 1. Body; 2. Pretreatment chamber; 3. Filter chamber; 4. Water circulation spray mechanism; 401. First support ring; 402. Spray pipe; 403. Water tank; 404. Support block; 405. Water pump; 406. Water inlet pipe; 407. Water outlet pipe; 408. First filter plate; 409. First delivery pipe; 410. First connecting pipe; 411. Internally threaded pipe; 412. Externally threaded pipe; 413. Second connecting pipe; 414. Fixing ring; 415. Spray head; 416. Inclined pipe; 417. Filter Net; 5. Feed pipe; 6. Valve; 7. Discharge pipe; 8. First bracket; 9. Guide plate; 10. Guide plate; 11. Top plate; 12. Second filter plate; 13. Baffle; 14. Second support ring; 15. Second bracket; 16. Device box; 17. Spring; 18. Top block; 19. Bag filter; 20. Protection box; 21. Bidirectional motor; 22. Rotating rod; 23. Eccentric wheel; 24. Adapter rod; 25. Air bag; 26. Second conveying pipe; 27. Blowing pipe; 28. Bottom plate. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0031] like Figure 1 - Figure 8The figure shows a dust removal device for flue gas after desulfurization and denitrification, comprising a body 1, a pretreatment chamber 2 being provided on the left side of the body 1, for performing preliminary treatment of the flue gas in the pretreatment chamber 2 provided inside the body 1 to remove larger impurities and particulate matter, a filter chamber 3 being provided on the right side of the body 1, and a circulating spray mechanism 4 being provided inside the pretreatment chamber 2 and on the rear side of the body 1;

[0032] The circulating spray mechanism 4 includes: a first support ring 401, a water tank 403, a water pump 405 and several internal threaded tubes 411. The interior of the first support ring 401 is penetrated by a spray pipe 402. By fixing multiple spray pipes 402 in the interior of the first support ring 401, the spray pipe 402 is fixedly supported, so that the spray pipe 402 and the first support ring 401 are fixed to the inner top wall of the pretreatment chamber 2. The front side wall of the water tank 403 is arranged on the rear side wall of the machine body 1. The interior of the water tank 403 is fixedly connected with a support block 404. The bottom wall of the water pump 405 is fixedly connected to the upper side wall of the support block 404. The water pump 405 is supported by the provided support block 404. The input end of the support block 404 is penetrated by a water inlet pipe 406. The output end of the support block 404 is penetrated by a water outlet pipe 407. The water inlet pipe 406 on the input end is used to extract water from the water tank 403 and is transferred to the pipe at the bottom through the water outlet pipe 407 on the output end. A first filter plate 408 is fixedly connected to the inside of the water tank 403. The used water flows into the water tank 403 through the first filter plate 408 and is separated. The top of the water outlet pipe 407 is connected to the first delivery pipe 409. The right side of the first delivery pipe 409 is connected to the right side of the inside of the first support ring 401. The first delivery pipe 409 is supported by fixing the first delivery pipe 409 on the left side of the first support ring 401. The bottom ends of the multiple spray pipes 402 are all connected to the first connecting pipe 410. The water is transferred to the multiple spray pipes 402 through the first delivery pipe 409. The water will flow into the first connecting pipe 410 at the bottom and be transferred to the next device.

[0033] The top ends of the plurality of internally threaded tubes 411 are connected to the bottom ends of the first connecting tubes 410. The bottom ends of the plurality of internally threaded tubes 411 are internally threadedly connected to externally threaded tubes 412. The internally threaded tubes 411 are threadedly connected to the externally threaded tubes 412 to support the internal devices. The interiors of the plurality of externally threaded tubes 412 are provided with second connecting tubes 413. The top ends of the plurality of second connecting tubes 413 are fixedly connected to fixing rings 414. The fixing rings 414 are placed on the top ends of the externally threaded tubes 412, and the pressure of the water flow is used to bring The dynamic fixing ring 414 rotates on the top of the externally threaded tube 412. The bottom ends of several fixing rings 414 are arranged on the top of several externally threaded tubes 412. The bottom ends of several second connecting tubes 413 are internally connected to the nozzles 415. When the water pressure flows out from the hole groove of the nozzle 415, the pressure pushes the nozzle 415 to rotate. During the rotation, the nozzle 415 drives the fixing ring 414 at the top of the second connecting tube 413 to rotate on the top of the externally threaded tube 412, thereby achieving the effect of rotating water spraying, so as to spray the interior of the pretreatment chamber 2 in an all-round manner.

[0034] An inclined tube 416 is connected to the bottom wall of the body 1. When water and impurities flow into the bottom of the pretreatment chamber 2, the impurities will settle in the water before the valve 6 is opened. When the water level reaches a certain height, it will flow into the water tank 403 through the inclined tube 416. The rear side of the inclined tube 416 is connected to the inside of the water tank 403. A filter screen 417 is fixedly connected to the front side of the inclined tube 416. The used water is preliminarily filtered through the filter screen 417 to prevent larger impurities and particulate matter from flowing into the water tank 403.

[0035] like Figure 1 - Figure 9As shown, the left side wall of the body 1 is connected to a feed pipe 5, through which the smoke is transferred to the interior of the body 1 for processing. The right side wall of the body 1 is connected to a discharge pipe 7. The outside of the bottom of the pretreatment chamber 2 and the filter chamber 3 are fixedly connected with valves 6. The sewage outlets in the pretreatment chamber 2 and the filter chamber 3 are controlled by the two valves 6. The outside of the bottom wall of the body 1 is fixedly connected to a first bracket 8. The right side of the pretreatment chamber 2 and the left side of the filter chamber 3 are fixedly connected with a guide plate 9. The guide plate 9 is fixed to the pretreatment chamber 2 and the filter chamber 3. In the middle of the filter chamber 3, impurities are filtered. The bottom of the guide plate 9 is fixedly connected with a guide plate 10, which is used to guide the filtered impurities to flow into the inner bottom wall of the pretreatment chamber 2. The inside of the guide plate 9 is slidably connected with a second layer of filter plate 12, which is used to filter to prevent larger impurities from being sprayed into the flue gas for separation. The front side wall of the second layer of filter plate 12 is fixedly connected with a baffle 13 to limit the second layer of filter plate 12 and prevent it from flowing out from the gap in the body 1.

[0036] like Figure 1 - Figure 12 As shown, the interior of the filter chamber 3 is fixedly connected to a second bracket 15, and the second bracket 15 is used to support and fix the bottom of the top device. A second support ring 14 is provided inside the filter chamber 3, and the upper side walls of the second bracket 15 are fixedly connected to a device box 16. The interiors of the four device boxes 16 are fixedly connected to springs 17, and the effect of rebound reset is achieved by the provided springs 17. The top ends of the four springs 17 are fixedly connected to top blocks 18, and the four top blocks 18 are fixedly connected to the bottom wall of the second support ring 14. The top blocks 18 are used to connect to the bottom wall of the second support ring 14 to fix the second support ring 14 to the upper side wall of the second bracket 15. The interior of the second support ring 14 is fixedly connected to a dust bag 19, and the dust bag 19 is supported and fixed by the second support ring 14 to process the flue gas again and completely separate the impurities in the flue gas.

[0037] like Figure 1 - Figure 12As shown, the top wall of the guide rail plate 9 is fixedly connected to the top plate 11, and the bottom device is supported by the set top plate 11, and the top wall of the top plate 11 is fixedly connected to the protective box 20, and a bidirectional motor 21 is provided inside the protective box 20, and the internal bidirectional motor 21 is protected by the set protective box 20. The left and right output ends of the bidirectional motor 21 are fixedly connected to the rotating rod 22, and the other ends of the two rotating rods 22 are fixedly connected to the eccentric wheels 23, and the other sides of the two eccentric wheels 23 are fixedly connected to the transfer rod 24, and the other sides of the two transfer rods 24 are fixedly connected to the front and rear sides of the right side wall of the second support ring 14, and the eccentric wheels 23 are used to drive the transfer rod 24 to connect with the front and rear sides of the right side wall of the second support ring 14, so as to change the movement trajectory of the transfer rod 24 and drive the second support ring 14 to shake left and right, and the top block 18 and spring 17 at the bottom are matched to achieve the vibration effect to vibrate and clean the bag dust collector 19.

[0038] like Figure 1 - Figure 11 As shown, the rear side wall of the body 1 is fixedly connected to a bottom plate 28, and an air bag 25 is fixedly connected to the top wall of the bottom plate 28. The air bag 25 is supported by the bottom plate 28. The top of the air bag 25 is connected to a second delivery pipe 26. The other ends of the four second delivery pipes 26 are connected to the inner top wall of the filter chamber 3. The bottoms of the four second delivery pipes 26 are connected to a blow pipe 27. The gas is transferred to the blow pipe 27 through the second delivery pipe 26 on the top of the air bag 25 to clean the bag-type dust collector 19, thereby achieving a two-way cleaning structure to improve the cleaning of the bag-type dust collector 19 and prevent a lot of manpower, material resources and time from being wasted when disassembling the bag-type dust collector 19. The outer sides of several blow pipes 27 are arranged on the top of the bag-type dust collector 19.

[0039] It should be noted that the utility model is a dust removal device for flue gas after desulfurization and denitrification. First, the water pump 405, the bidirectional motor 21 and the air bag 25 are connected to the external power supply and the air pump to supply power to the device.

[0040] First, connect the external water pipe to the water tank 403 to transfer clean water to the water tank 403, extract water from the water tank 403 through the water inlet pipe 406 on the input end of the water pump 405, and then transfer the water to the first delivery pipe 409 through the water outlet pipe 407 on the output end of the water pump 405 to transfer it to multiple spray pipes 402. After the transfer, the water will flow into the first connecting pipe 410 at the bottom of the spray pipe 402 to transfer the water to the internal threaded pipe 411, and the internal threaded pipe 411 is connected to the external threaded pipe 412 to support the second connecting pipe 413 inside the external threaded pipe 412, and the water pressure drives the nozzle 415 inside the bottom end of the second connecting pipe 413 to drive the fixing ring 414 on the top end of the second connecting pipe 413 to move outside. The top of the threaded tube 412 rotates to achieve the effect of rotating water spraying, to spray the flue gas inside the pretreatment chamber 2 in all directions, to carry out preliminary treatment, to separate larger impurities and particulate matter, and the separated impurities and particulate matter will flow into the bottom of the pretreatment chamber 2. Before opening the valve 6, the particulate matter will settle when flowing to the bottom. When the water level reaches a certain height, the water will be transferred to the water tank 403 through the inclined tube 416. Before flowing in, the sewage will be preliminarily filtered through the filter mesh 417 to prevent impurities and particulate matter from flowing into the water tank 403. After flowing into the water tank 403, it will pass through the first filter plate 408 again for fine filtration to separate impurities in the water to achieve the effect of reuse.

[0041] By fixing the second bracket 15 in the filter chamber 3, the spring 17 is protected and supported by the device box 16 on the upper side wall of the second bracket 15, and the top block 18 on the top of the spring 17 is connected to the bottom of the second support ring 14 to support and fix the second support ring 14. When the bag dust collector 19 inside the second support ring 14 needs to be cleaned, the eccentric wheel 23 is first driven to rotate by the rotating rod 22 on the front and rear output ends of the bidirectional motor 21 on the top plate 11. The rotating eccentric wheel 23 The adapter rod 24 on the outside is connected to the front and rear sides of the second support ring 14 to change the movement trajectory of the adapter rod 24 and drive the second support ring 14 to swing left and right. When swinging, the bottom top block 18 of the second support ring 14 will squeeze the spring 17 to produce a vibration effect to clean the bag dust collector 19, thereby effectively improving the dust removal efficiency and reducing maintenance costs. It also cooperates with the air bag 25 and the blow pipe 27 to improve the cleaning effect of the bag dust collector 19 and increase the service life of the equipment.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A dust removal device for flue gas after desulfurization and denitrification, comprising a body (1), characterized in that: A pretreatment chamber (2) is provided on the left side of the interior of the machine body (1), a filter chamber (3) is provided on the right side of the interior of the machine body (1), and a water circulation spray mechanism (4) is provided inside the pretreatment chamber (2) and on the rear side of the machine body (1); The water circulation spray mechanism (4) comprises: a first support ring (401), a water tank (403), a water pump (405) and a plurality of internal threaded pipes (411); the interior of the first support ring (401) is connected to a spray pipe (402); the front side wall of the water tank (403) is arranged on the rear side wall of the machine body (1); the interior of the water tank (403) is fixedly connected to a support block (404); the bottom wall of the water pump (405) is fixedly connected to the upper side wall of the support block (404); the input end of the support block (404) is connected to a water inlet pipe (406); the output end of the support block (404) is connected to a water outlet pipe (407); the interior of the water tank (403) is fixedly connected to a first filter plate (408); the top end of the water outlet pipe (407) is connected to a first delivery pipe (409); the right side of the first delivery pipe (409) is connected to the right side of the interior of the first support ring (401); The bottom ends of the spray pipes (402) are all connected to the first connecting pipe (410), the top ends of several internally threaded pipes (411) are all connected to the bottom ends of the first connecting pipe (410), the bottom ends of several internally threaded pipes (411) are internally threadedly connected to the externally threaded pipes (412), the interiors of several externally threaded pipes (412) are all provided with second connecting pipes (413), the top ends of several second connecting pipes (413) are all fixedly connected to the outsides thereof with fixing rings (414), the bottom ends of several fixing rings (414) are arranged at the top ends of several externally threaded pipes (412), the bottom ends of several second connecting pipes (413) are internally connected to the spray heads (415), the bottom wall of the body (1) is connected to an inclined pipe (416), the rear side of the inclined pipe (416) is connected to the inside of the water tank (403), and the front side of the inclined pipe (416) is fixedly connected to the inside of the filter screen (417).

2. The dust removal device for flue gas after desulfurization and denitrification according to claim 1, characterized in that: The left side wall of the machine body (1) is connected to a feed pipe (5), the right side wall of the machine body (1) is connected to a discharge pipe (7), valves (6) are fixedly connected to the outer sides of the bottoms of the pretreatment chamber (2) and the filter chamber (3), and a first bracket (8) is fixedly connected to the outer side of the bottom wall of the machine body (1).

3. The dust removal device for flue gas after desulfurization and denitrification according to claim 1, characterized in that: A guide plate (9) is fixedly connected to the right side of the pretreatment chamber (2) and the left side of the filter chamber (3), a guide plate (10) is fixedly connected to the bottom of the guide plate (9), a second layer of filter plate (12) is slidably connected inside the guide plate (9), and a baffle (13) is fixedly connected to the front side wall of the second layer of filter plate (12).

4. The dust removal device for flue gas after desulfurization and denitrification according to claim 1, characterized in that: The interior of the filter chamber (3) is fixedly connected to a second bracket (15), the interior of the filter chamber (3) is provided with a second support ring (14), the upper side walls of the second bracket (15) are fixedly connected to a device box (16), the interiors of the four device boxes (16) are fixedly connected to springs (17), the top ends of the four springs (17) are fixedly connected to top blocks (18), the four top blocks (18) are fixedly connected to the bottom wall of the second support ring (14), and the interior of the second support ring (14) is fixedly connected to a dust bag filter (19).

5. The dust removal device for flue gas after desulfurization and denitrification according to claim 3, characterized in that: The top wall of the guide rail plate (9) is fixedly connected to the top plate (11), the top wall of the top plate (11) is fixedly connected to the protection box (20), a bidirectional motor (21) is arranged inside the protection box (20), the front and rear output ends of the bidirectional motor (21) are fixedly connected to the rotating rod (22), the other ends of the two rotating rods (22) are fixedly connected to the eccentric wheels (23), the other sides of the two eccentric wheels (23) are fixedly connected to the transfer rod (24), and the other sides of the two transfer rods (24) are fixedly connected to the front and rear sides of the right side wall of the second support ring (14).

6. The dust removal device for flue gas after desulfurization and denitrification according to claim 1, characterized in that: The rear side wall of the body (1) is fixedly connected to a bottom plate (28), the top wall of the bottom plate (28) is fixedly connected to an air bag (25), the top ends of the air bags (25) are all connected to second delivery pipes (26), the other ends of the four second delivery pipes (26) are all connected to the inner top wall of the filter chamber (3), the bottoms of the four second delivery pipes (26) are all connected to a blowing pipe (27), and the outer sides of several of the blowing pipes (27) are arranged on the top end of the bag dust collector (19).

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