Environment-friendly purification device for denitration of dust-containing flue gas

Abstract

The invention belongs to the technical field of flue gas purification, and discloses an environment-friendly purification device for dust-containing flue gas denitration, the environment-friendly purification device comprises a treatment cylinder, a uniform distribution assembly is arranged in the treatment cylinder, the uniform distribution assembly is used for improving the waste gas purification effect, and uniform distribution rings are uniformly fixed in an inverted cone area in the treatment cylinder through fixing round rods; due to the fact that the equipartition rings are also inverted cone areas, and the distances between the equipartition rings are the same, gas entering from the bottom can be evenly dispersed through the equipartition rings, the uniformity can be effectively improved, meanwhile, a combined bearing and a rotating ring at the bottom are matched to assist the sealing cylinder to rotate, an opening of an inclined bent pipe at the bottom faces downwards, and the bending angle is 45 degrees. The undetermined sealing cylinder rotates along the combined bearing under the reaction effect of the gas which is sprayed out through the inclined bent pipe and makes contact with the internal liquid, so that the effect of mixing with the internal treatment liquid is improved through the mode, the flue gas denitration effect is improved, and blockage can be avoided without using a spray head.

Description

Technical Field

[0001] The present invention belongs to the technical field of flue gas purification, and in particular is an environmentally friendly purification device for denitrification of dust-laden flue gas. Background Art

[0002] In modern factories, incineration processes are often required during production and processing. During the incineration process, gases containing nitrogen oxides will be produced. When such gases are directly discharged, they will damage the ozone layer, thereby causing air pollution problems. In order to achieve environmental protection, it is usually necessary to denitrify the waste gas produced by incineration. By using a filter device to filter out a large amount of impurities in the flue gas, and then using chemical treatment agents to mix with the flue gas, the harmful substances in the flue gas are changed through chemical reactions to avoid direct emissions causing damage to the environment.

[0003] For example, the invention with publication number CN218653859U discloses a flue gas denitrification device, a denitrification reaction cylinder, and a flue gas ejection mechanism and a denitrification mechanism arranged in the denitrification reaction cylinder; the flue gas ejection mechanism includes a plurality of nozzles with openings facing upward and arranged at intervals in the same horizontal plane, which are used to evenly and dispersely eject the flue gas to be treated; the denitrification mechanism is arranged above the flue gas ejection mechanism, and the contact area between the denitrification mechanism and the ejected dispersed flue gas to be treated is large, and can more fully contact the denitrification mechanism, thereby increasing the working efficiency of the flue gas denitrification device.

[0004] The flue gas denitrification device in the prior art disperses the flue gas by using multiple groups of nozzle structures when treating the flue gas, which can solve the problem of excessive concentration of the flue gas to a certain extent. However, since the nozzle structure is relatively small and prone to clogging, it is not easy to clean. When the jet structure is diverted, there is still a problem of no gas outlet in the middle area.

[0005] Therefore, an environmentally friendly purification device for denitrification of dust-laden flue gas is proposed to solve the problems raised in the background technology. Summary of the Invention

[0006] In order to solve the problems raised in the above background technology, the present invention provides an environmentally friendly purification device for denitrification of dust-laden flue gas.

[0007] To achieve the above objectives, the present invention provides the following technical solutions: an environmentally friendly purification device for denitrifying dust-laden flue gas, comprising a treatment barrel, wherein a uniform flow distribution component is provided inside the treatment barrel, and the uniform flow distribution component is used to improve the exhaust gas purification effect; a stable replacement component is provided on the front of the treatment barrel, and the stable replacement component is used to improve the speed and stability of the internal filter structure replacement;

[0008] The uniform flow distribution component includes a fixed round rod, and the fixed round rod is welded and fixed in the middle of the inverted cone surface in the middle of the treatment cylinder. Several groups of equal distribution rings are evenly fixed on the outside of the fixed round rod. The uniform flow distribution component includes a rotating ring, and a sealing cylinder is welded and installed on the outside of the upper end of the rotating ring, and several groups of inclined elbows are embedded and welded in the bottom of the sealing cylinder.

[0009] Preferably, the stable replacement component includes a dust filter cartridge, and fixed screw sleeves are welded and installed on both sides of the dust filter cartridge, an adjusting screw is movably provided on the inner side of the fixed screw sleeve, and a small gear is welded and installed on the top of the adjusting screw, a large gear plate is meshed between the small gears, and a gear box is provided to separate the large gear plate and the small gear, and several groups of stabilizing guide rods are welded and installed on the bottom of the back side of the gear box, and the stabilizing guide rods are movably embedded in the holes opened at the top of the dust filter cartridge.

[0010] Preferably, a fixed cover is installed on the top of the treatment cylinder through a bolt structure, and treatment liquid is provided at the bottom of the inner side of the treatment cylinder, and the height of the treatment liquid is higher than the outlet of the inclined elbow.

[0011] Preferably, a sealing disk is fixedly installed on the bottom of the fixed cover, and the sealing disk is embedded in a groove set at the upper end of the treatment cylinder. A discharge pipe is installed on the top of the fixed cover, and two groups of openings at the bottom of the discharge pipe pass through the fixed cover and the sealing disk, and there is a group of openings on the top of the discharge pipe.

[0012] Preferably, a fixed partition is fixedly installed in the middle area of ​​the bottom of the sealing disk, and a fixed ring is welded and installed on the outer side of the bottom of the fixed partition, and filter blocks 2 are respectively provided on both sides of the fixed partition.

[0013] Preferably, a combined bearing is installed on the outer side of the lower end of the rotating ring, and a transmission pipe is fixedly installed on the outer side of the combined bearing. The rotating ring and the transmission pipe are movably connected, and the transmission pipe passes through the bottom of the fixed treatment cylinder and the dust filter cylinder.

[0014] Preferably, an air inlet pipe is welded and installed on the front of the upper end of the dust filter cartridge, and a filter block 1 is fixedly installed inside the dust filter cartridge.

[0015] Preferably, a cover is mounted on the top edge of the gear box via bolts, and a brushless motor is fixedly mounted on the top of the cover via bolts, and the brushless motor is connected to an external controller via a wiring structure.

[0016] Preferably, the bottom of the small gear is fixedly connected to the bottom of the inner side of the gear box through a bearing, the top and bottom of the large gear disc are embedded with fixed bearings, and the fixed bearings are fixedly connected to the bottom of the inner side of the gear box and the bottom of the cover, and an axis groove is opened in the middle of the large gear disc, and the rotating shaft of the output end of the brushless motor is embedded in the inner side of the axis groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention arranges the coordination of structures such as a uniform flow distribution component and an equalizing ring, and fixes the equalizing ring evenly in the inverted cone area in the treatment tube by a fixed round rod. Since the equalizing ring is also an inverted cone area and the distance between the equalizing rings is the same, the gas entering from the bottom will be evenly dispersed by the equalizing ring, which can effectively improve the uniformity. At the same time, the combination bearing and the rotating ring at the bottom can assist the sealing tube to rotate, and the inclined bend pipe at the bottom opens downward and has a bending angle of 45 degrees. After the gas is ejected through the inclined bend pipe and contacts the internal liquid, the reaction force will rotate the sealing tube to be determined along the combination bearing, thereby increasing the effect of mixing with the internal treatment liquid, improving the effect of flue gas denitrification, and avoiding blockage by not using a nozzle.

[0019] The present invention cooperates with structures such as a stable replacement component and a brushless motor. The existing filter block replacement device requires manual adjustment and has the problem of uneven force through side control. By using a brushless motor, the two sets of adjusting screws can be driven to rotate simultaneously by gear cooperation. The adjusting screw structure can push the top gear box up in the opposite direction along the threaded structure on the inner side of the fixed screw sleeve. After rising, the internal filter structure can be removed for replacement. By using a stable guide rod, the adjusting screw can be kept in a vertical state at all times, effectively avoiding the problem of uneven force. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the side structure of the treatment cylinder of the present invention;

[0022] Figure 3 This is a structural diagram of the filter block 2 of the present invention;

[0023] Figure 4 This is a schematic diagram of an oblique cross section of the treatment tube of the present invention;

[0024] Figure 5 This is a schematic diagram of the side interface of the treatment cylinder of the present invention;

[0025] Figure 6 This is a schematic diagram of the inclined elbow structure of the present invention;

[0026] Figure 7 Schematic diagram of the interior of the gear box of the present invention.

[0027] In the figure: 1. Treatment cylinder; 101. Fixed round rod; 102. Equalizing ring; 103. Treatment liquid; 2. Fixed cover; 201. Discharge pipe; 202. Sealing disk; 203. Fixed partition; 204. Fixed ring; 205. Filter block 2; 3. Inclined elbow; 301. Sealing cylinder; 302. Rotating ring; 303. Combined bearing; 304. Transmission pipe; 4. Filter block 1; 401. Dust filter cylinder; 402. Inlet pipe; 403. Fixed screw sleeve; 5. Stabilizing guide rod; 501. Gear box; 502. Combined sealing disk; 503. Brushless motor; 504. Fixed bearing; 505. Shaft groove; 506. Large gear plate; 507. Small gear; 508. Adjusting screw. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0029] like Figures 1 to 7 As shown, the present invention provides an environmentally friendly purification device for denitrification of dust-laden flue gas, comprising a treatment tube 1, wherein a uniform flow diversion component is provided inside the treatment tube 1, and the uniform flow diversion component is used to improve the effect of exhaust gas purification, and a stable replacement component is provided on the front of the treatment tube 1, and the stable replacement component is used to improve the speed and stability of the replacement of the internal filter structure;

[0030] The uniform flow distribution component includes a fixed round rod 101, and the fixed round rod 101 is welded and fixed in the middle of the inverted cone surface in the middle of the treatment cylinder 1. Several groups of equal distribution rings 102 are evenly fixedly installed on the outside of the fixed round rod 101. The uniform flow distribution component includes a rotating ring 302, and a sealing cylinder 301 is welded and installed on the outside of the upper end of the rotating ring 302, and several groups of inclined elbows 3 are embedded and welded in the bottom of the sealing cylinder 301.

[0031] The above scheme is adopted: by setting up the coordination of the uniform flow distribution component and the balancing ring 102 and other structures, the balancing ring 102 is evenly fixed in the inverted cone area of ​​the treatment cylinder 1 by the fixed round rod 101. Since the balancing ring 102 is also an inverted cone area and the distances between the balancing rings 102 are the same, the gas entering from the bottom will be evenly dispersed by the balancing ring 102, which can effectively improve the uniformity. At the same time, the combination bearing 303 and the rotating ring 302 at the bottom can assist the sealing cylinder 301 to rotate, and the inclined bend pipe 3 at the bottom opens downward and has a bending angle of 45 degrees. After the gas is ejected through the inclined bend pipe 3 and contacts the internal liquid, the reaction force will rotate the sealing cylinder 301 along the combination bearing 303, thereby increasing the uniformity. The effect of mixing with the internal treatment liquid 103 is added to improve the effect of flue gas denitrification, and clogging can be avoided by not using a nozzle. By setting up a stable replacement component and a brushless motor 503 and other structures, the existing filter block replacement device needs to be adjusted manually, and there is a problem of uneven force through side control. By using a brushless motor 503, the two sets of adjusting screws 508 can be driven to rotate at the same time by gear cooperation, and the adjusting screw 508 structure can push the top gear box 501 up in the opposite direction along the threaded structure on the inside of the fixed screw sleeve 403. After rising, the internal filter structure can be removed for replacement, and by using a stable guide rod 5, the adjusting screw 508 can be kept in a vertical state at all times, effectively avoiding the problem of uneven force.

[0032] like Figure 6 and Figure 7 As shown, the stable replacement component includes a dust filter cartridge 401, and fixed screw sleeves 403 are welded and installed on both sides of the dust filter cartridge 401, an adjusting screw 508 is movably provided on the inner side of the fixed screw sleeve 403, and a small gear 507 is welded and installed on the top of the adjusting screw 508, a large toothed disc 506 is meshed between the small gears 507, and a gear box 501 is provided to separate the large toothed disc 506 and the small gear 507, and several groups of stable guide rods 5 are welded and installed on the bottom of the back side of the gear box 501, and the stable guide rods 5 are movably embedded in the hole opened at the top of the dust filter cartridge 401.

[0033] The above solution is adopted: the dust filter cartridge 401 can be used to provide an installation position for the internal structure, and the sealing disk 502 structure can be combined to maintain a good sealing effect. At the same time, the fixed screw sleeve 403 on the side is provided with a threaded structure, which can match the adjusting screw 508 and form a guiding effect. The installed gear box 501 can provide an installation position for the internal gear structure, and the cover can be fixed to the gear box 501 using a bolt structure. Each group of stabilizing guide rods 5 structures are movably inserted into the top of the dust filter cartridge 401, and provide guidance and increase stability for the gear box 501 by moving up and down, which can effectively avoid the problem of bending of the adjusting screw 508 due to uneven force.

[0034] like Figure 1 and Figure 2 As shown, a fixed cover 2 is installed on the top of the treatment cylinder 1 through a bolt structure, and a treatment liquid 103 is provided at the bottom inside the treatment cylinder 1. The height of the treatment liquid 103 is higher than the outlet of the inclined elbow 3.

[0035] A sealing disk 202 is fixedly installed on the bottom of the fixed cover 2, and the sealing disk 202 is embedded in a groove set at the upper end of the treatment cylinder 1. A discharge pipe 201 is installed on the top of the fixed cover 2, and two groups of openings at the bottom of the discharge pipe 201 pass through the fixed cover 2 and the sealing disk 202. There is a group of openings on the top of the discharge pipe 201.

[0036] A fixed partition 203 is fixedly installed in the middle area of ​​the bottom of the sealing disk 202, and a fixed ring 204 is welded and installed on the outer side of the bottom of the fixed partition 203. Filter blocks 205 are respectively provided on both sides of the fixed partition 203.

[0037] The above solution is adopted: the fixing cover 2 can be fixed to the top of the treatment cylinder 1 by using a bolt structure. After fixing, the sealing disk 202 will be squeezed and embedded in the top opening area of ​​the treatment cylinder 1. When installing, the sealing disk 202 is squeezed in by using the bolt structure. Since the edge adopts a rubber structure, the extrusion can fill the gap, thereby preventing the exhaust gas from being discharged through the gap, causing the flue gas to be discharged into the interior of the project and affecting the health of the workers. The sealing of the treatment cylinder 1 can be effectively maintained by extrusion. The fixed partition 203 installed in the middle can divide the filter block 205 into two parts, and the filter structure can be directly removed for replacement. The fixing ring 204 at the bottom can provide support for the filter block 205, which is convenient for controlling the lifting height of the filter block 205. At the same time, the middle area remains open, which can ensure the normal passage of gas for filtering treatment. The fixed partition 203 is in a fixed connection with the sealing disk 202 and the fixing ring 204. When the fixed cover 2 is removed, the internal structure will be taken out at the same time. The internal exhaust gas will enter the exhaust pipe 201 after being filtered by the filter block 205, and will be discharged from the same outlet after being collected. The side shape of the exhaust pipe 201 is an inverted Y shape, and the two groups of inlets are correspondingly arranged at the top of the two groups of filter blocks 205.

[0038] like Figures 4 to 7 As shown, a combined bearing 303 is installed on the outer side of the lower end of the rotating ring 302, and a transmission tube 304 is fixedly installed on the outer side of the combined bearing 303. The rotating ring 302 and the transmission tube 304 are movably connected, and the transmission tube 304 passes through the bottom of the fixed treatment cylinder 1 and the dust filter cylinder 401.

[0039] An air inlet pipe 402 is welded to the front of the upper end of the dust filter cartridge 401 , and a filter block 4 is fixedly installed inside the dust filter cartridge 401 .

[0040] A cover is mounted on the top edge of the gear box 501 via bolts, and a brushless motor 503 is fixedly mounted on the top of the cover via bolts. The brushless motor 503 is connected to an external controller via a wiring structure.

[0041] The bottom of the small gear 507 is fixedly connected to the bottom of the inner side of the gear box 501 through a bearing, and the top and bottom of the large toothed disc 506 are embedded with fixed bearings 504, and the fixed bearings 504 are fixedly connected to the bottom of the inner side of the gear box 501 and the bottom of the cover. A shaft groove 505 is opened in the middle of the large toothed disc 506, and the rotating shaft of the output end of the brushless motor 503 is embedded in the inner side of the shaft groove 505.

[0042] The above scheme is adopted: the transmission pipe 304 is a C-shaped structure, and its two ends pass through the bottom of the treatment tube 1 and the dust filter tube 401 respectively. The gas will be transmitted into the treatment tube 1 through the transmission pipe 304 for secondary treatment. The air inlet pipe 402 will be connected to the external flue gas transmission fan to ensure that the fan can exert a certain pressure to pour the flue gas into the interior of the dust filter tube 401. After the flue gas enters the interior, it will pass through the filter block 4 for the first filtration. The filter block 4 is mainly used to filter dust and particulate matter in the flue gas. The brushless motor 503 needs to use a matching connection line to connect to the external controller. After the connection, the PLC controller is used to control the brushless motor 503. When the brushless motor 503 is powered on, it will drive the drive shaft to rotate after receiving the electrical signal. During the rotation of the drive shaft, it will drive the large gear plate 506 to rotate. The large gear plate 506 can realize the transmission of driving force and drive the small gear 507 to perform the same through the gear ratio. The gear box 501 is rotated in the same direction as above, and the threaded structure can push the gear box 501 at the top to rise during the rotation, thereby opening the closed structure and removing the filter block 4 tightly embedded in the dust filter cartridge 401. After removal, it can be replaced. The fixed bearing 504 and the gear structure can assist the large toothed disc 506 and the small gear 507 to rotate stably at the bottom of the gear box 501. The gear structure at the bottom is controlled by the brushless motor 503 for adjustment, which can effectively reduce the work pressure of the staff. The wireless staff can operate manually. When replacing, only the control device needs to be used for control, which can ensure that the bottom adjusting screw 508 rotates at the same time, thereby avoiding the thread structure being stuck due to the different number of turns and speed of the screw rotation caused by manual adjustment, and can effectively improve the efficiency of replacing the internal filter block 4, thereby further avoiding the problem of affecting the normal treatment of flue gas due to replacement.

[0043] The working principle and usage process of the present invention: First, it is necessary to connect the corresponding external pipes of the air inlet pipe 402 and the exhaust pipe 201. After the connection, the flue gas is poured into the inner side of the dust filter cartridge 401 through the air inlet pipe 402. After the flue gas accumulates to a certain extent inside the dust filter cartridge 401, the pressure will push the flue gas through the filter block 4. After passing through the filter block 4, the particles and some impurities inside the flue gas will be exposed. The flue gas will continue to flow through the transmission pipe 304 and enter the interior of the sealing cylinder 301. After continuous accumulation inside, it will be evenly discharged through each group of inclined bends 3. During the gas discharge process, it will contact the treatment liquid 103. There is a reaction force between the contact, which will push the inclined bend 3 and the sealing cylinder 301 to rotate. During the rotation, the combined bearing 303 can assist the sealing cylinder 301 to rotate stably. By rotating and injecting the treatment liquid 103 in this way, the mixing effect can be further increased. After mixing with the treatment liquid 103 for chemical reaction, it will rise. The rising exhaust gas will follow each other. The rounded area is concentrated in the middle and is guided to rise by the evenly spaced dividing ring 102. After rising, it will contact and pass through the filter block 205 for secondary filtration, and finally be discharged through the discharge pipe 201 at the top. When the filter block 14 needs to be replaced, the brushless motor 503 is controlled by an external PLC controller to drive the drive shaft to rotate. During the rotation, the large gear disc 506 will rotate and engage to drive the small gear 507 to rotate. During the rotation, the adjusting screw 508 at the bottom will rotate synchronously. Since the adjusting screw 508 is arranged inside the fixed screw sleeve 403, the gear box 501 will be pushed to separate from the dust filter cartridge 401 under the reaction of the threaded structure. After separation, the internal filter block 14 can be taken out for replacement. Finally, when the filter block 205 needs to be replaced, the bolt structure on the top of the fixed cover 2 needs to be disassembled with a tool. After disassembly, the height of the fixed cover 2 can be lifted, and the overall structure at the bottom can be pulled out to replace the filter block 205.

[0044] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly purification device for denitrification of dusty flue gas, comprising a treatment cylinder (1), characterized in that: A uniform flow distribution component is provided inside the treatment cylinder (1), and the uniform flow distribution component is used to improve the exhaust gas purification effect; a stable replacement component is provided on the front of the treatment cylinder (1), and the stable replacement component is used to improve the speed and stability of the internal filter structure replacement; The uniform flow distribution component comprises a fixed round rod (101), and the fixed round rod (101) is welded and fixed to the middle of the inverted cone surface in the middle of the treatment cylinder (1), and a plurality of groups of uniform flow distribution rings (102) are uniformly fixedly installed on the outer side of the fixed round rod (101). The uniform flow distribution component comprises a rotating ring (302), and a sealing cylinder (301) is welded and installed on the outer side of the upper end of the rotating ring (302), and a plurality of groups of inclined elbows (3) are embedded and welded in the bottom of the sealing cylinder (301).

2. The environmentally friendly purification device for denitrification of dusty flue gas according to claim 1, characterized in that: The stable replacement component comprises a dust filter cartridge (401), and fixed screw sleeves (403) are welded and installed on both sides of the dust filter cartridge (401), an adjusting screw (508) is movably provided on the inner side of the fixing screw sleeve (403), and a small gear (507) is welded and installed on the top of the adjusting screw (508), a large toothed disc (506) is meshed between the small gears (507), and a gear box (501) is provided to separate the large toothed disc (506) and the small gear (507), and a plurality of groups of stable guide rods (5) are welded and installed on the bottom of the back side of the gear box (501), and the stable guide rods (5) are movably embedded in the holes opened on the top of the dust filter cartridge (401).

3. The environmentally friendly purification device for denitrification of dusty flue gas according to claim 1, characterized in that: A fixed cover (2) is installed on the top of the treatment cylinder (1) via a bolt structure, and treatment liquid (103) is provided at the bottom inside the treatment cylinder (1), with the height of the treatment liquid (103) being higher than the outlet of the inclined elbow (3).

4. The environmentally friendly purification device for denitrification of dusty flue gas according to claim 3, characterized in that: A sealing disc (202) is fixedly mounted on the bottom of the fixed cover (2), and the sealing disc (202) is embedded in a groove provided at the upper end of the treatment cylinder (1). A discharge pipe (201) is mounted on the top of the fixed cover (2), and two groups of openings at the bottom of the discharge pipe (201) penetrate the fixed cover (2) and the sealing disc (202), and a group of openings is provided at the top of the discharge pipe (201).

5. The environmentally friendly purification device for denitrification of dusty flue gas according to claim 4, characterized in that: A fixed partition (203) is fixedly installed in the middle area of ​​the bottom of the sealing disc (202), and a fixed ring (204) is welded and installed on the outer side of the bottom of the fixed partition (203). Filter blocks (205) are respectively provided on both sides of the fixed partition (203).

6. The environmentally friendly purification device for denitrification of dusty flue gas according to claim 1, characterized in that: A combined bearing (303) is installed on the outer side of the lower end of the rotating ring (302), and a transmission pipe (304) is fixedly installed on the outer side of the combined bearing (303). The rotating ring (302) and the transmission pipe (304) are movably connected, and the transmission pipe (304) passes through the bottom of the fixed treatment cylinder (1) and the dust filter cylinder (401).

7. The environmentally friendly purification device for denitrification of dusty flue gas according to claim 2, characterized in that: An air inlet pipe (402) is welded and mounted on the front of the upper end of the dust filter cartridge (401), and a filter block 1 (4) is fixedly arranged inside the dust filter cartridge (401).

8. The environmentally friendly purification device for denitrification of dusty flue gas according to claim 2, characterized in that: A cover is mounted on the top edge of the gear box (501) via bolts, and a brushless motor (503) is fixedly mounted on the top of the cover via bolts. The brushless motor (503) is connected to an external controller via a wiring structure.

9. The environmentally friendly purification device for denitrification of dusty flue gas according to claim 8, characterized in that: The bottom of the small gear (507) is fixedly connected to the bottom of the inner side of the gear box (501) via a bearing, the top and bottom of the large toothed disc (506) are embedded with fixed bearings (504), and the fixed bearings (504) are fixedly connected to the bottom of the inner side of the gear box (501) and the bottom of the cover, and a shaft groove (505) is provided in the middle of the large toothed disc (506), and the rotating shaft of the output end of the brushless motor (503) is embedded in the inner side of the shaft groove (505).

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