Energy-saving denitration device

Abstract

The utility model discloses an energy -conserving denitration device, including the purification tank, its both ends are equipped with the gas inlet and the exhaust port respectively, the purification tank inside is provided with the installation shell, the installation shell will the purification tank inside part divide into first area and second area, the back of installation shell is connected with the baffle, the baffle will the second area divide into the smoke guide chamber and the water storage chamber, filter mechanism, it includes the wind -induced board, the rotary shield and the filter screen, the wind -induced board installs in first area, and a plurality of through -flow orifices are equipped on the wind -induced board, and the rotary shield is rotatably connected on the wind -induced board outer wall through the drive end, and is used for shielding or opening the through -flow orifice. The utility model has the beneficial effects that: solve the flue gas spray denitration device in the prior art, can not control the flue gas flow, lead to the flue gas flow too big or too small, influenced the reaction efficiency of neutralization liquid and flue gas, reduced the equipment denitration effect's technical problem.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, specifically to an energy-saving denitrification device. Background Technology

[0002] Combustion flue gas generally contains many nitrogen oxides, which can cause environmental pollution. When emitting flue gas, it is necessary to denitrify it. Flue gas desulfurization and denitrification technology is a flue gas purification technology applied to the chemical industry that generates nitrogen oxides and sulfur oxides. Nitrogen oxides and sulfur oxides are one of the main sources of air pollution. Denitrification is the process of removing nitrogen oxides from combustion flue gas. The importance of preventing environmental pollution has been sharply raised as a global issue. Denitrification devices are needed when denitrifying flue gas. Flue gas denitrification is a key link in controlling nitrogen oxide emissions and preventing air pollution. It is widely used in the purification of flue gas emitted from combustion processes in thermal power plants, industrial boilers, cement kilns, and iron and steel smelting. Chinese utility model CN215742812U proposes a "medium-low temperature denitrification ammonia spraying device." This device achieves treatment by contacting the flue gas with the spray liquid through a spraying device. However, the device has an open internal structure, and the flow rate and velocity of the flue gas after entering through the inlet are mainly affected by the external fan. The device itself lacks an effective mechanism for regulating the flue gas flow rate. When the flue gas flow rate is too high, the residence time of the flue gas in the spraying area is too short, resulting in insufficient contact with the spray liquid, incomplete reaction, and a significant decrease in denitrification efficiency. Conversely, when the flue gas flow rate is too low, although the residence time is extended, the amount of flue gas processed per unit time is reduced, the equipment utilization rate is lowered, and energy is wasted. This uncontrollability of the flow rate makes it difficult for the device to adapt to the dynamic changes in flue gas flow rate under actual working conditions, resulting in large fluctuations in overall treatment efficiency and an inability to operate stably and efficiently. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide an energy-saving denitrification device. This solves the technical problem that existing flue gas spray denitrification devices cannot control the flue gas flow rate, resulting in excessively large or small flue gas flow rates, which affects the reaction efficiency of the neutralizing liquid and the flue gas, and reduces the denitrification effect of the equipment.

[0004] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: In a first aspect, this utility model provides an energy-saving denitrification device, comprising: The purification box has an air inlet and an exhaust outlet at both ends. The purification box is equipped with an installation shell, which divides the interior of the purification box into a first area and a second area. A partition is connected to the back of the installation shell, which divides the second area into a smoke guiding chamber and a water storage chamber. The filtration mechanism includes an air guide plate, a rotating shield, and a filter screen. The air guide plate is installed in the first area and has multiple flow ports. The rotating shield is rotatably connected to the outer wall of the air guide plate via a drive end and is used to block or open the flow ports. A filter screen is also provided inside the purification box and near the air guide plate. A spraying mechanism, installed in the smoke guiding chamber, is used to spray exhaust gas; A stirring mechanism, installed in the water storage chamber, is used to mix the spray liquid; A gas guide shell, used to connect the first region and the second region.

[0005] In some embodiments, a plurality of vertical plates are installed in the smoke guiding chamber, forming a smoke guiding channel within the smoke guiding chamber.

[0006] In some embodiments, the number of flow ports is at least three, and the three flow ports are arranged circumferentially around the center of the air guide plate on the surface of the air guide plate, and the cross-section of any one of the flow ports is fan-shaped.

[0007] In some embodiments, the rotating shielding member includes a shielding plate, the shielding plate having three communication ports corresponding one-to-one with the flow port, and the shielding plate being rotatably connected to the driving end.

[0008] In some embodiments, the drive end includes a first shaft and a first gear. The first shaft is axially disposed in the first region, and the baffle plate is fixed on the first shaft. The first gear is fixed on the first shaft and meshes with the agitation mechanism at the output end.

[0009] In some embodiments, a cleaning scraper is installed at the outer end of the first shaft and on both sides of the filter screen, with the side of the cleaning scraper facing the filter screen abutting against it.

[0010] In some embodiments, the spraying mechanism includes a water guide pipe, a pump body, and a spray head. One end of the pump body is connected to the water storage chamber, and the other end is connected to the water guide pipe. The end of the water guide pipe extends into the smoke guiding chamber and is connected to the spray head.

[0011] In some embodiments, the agitation mechanism includes a drive motor, a second shaft, a second gear, and spiral stirring blades; the drive motor is installed inside the mounting housing, and the output end of the drive motor is connected to the second shaft, one axial end of the second shaft extends into the water storage chamber, the second gear is fixed inside the mounting housing and on the second shaft, the second gear meshes with the first gear, is located in the water storage chamber, and spiral stirring blades are arranged circumferentially on the outer periphery of the second shaft.

[0012] In some embodiments, the upper surface of the mounting shell is inclined, and the back of the purification box is provided with a drain port communicating with the smoke guiding chamber. The front of the purification box is provided with a water inlet and a water outlet communicating with the water storage chamber from top to bottom, and valves are provided on the drain port, the water inlet and the water outlet.

[0013] In some embodiments, the air guide shell includes a first shell and a second shell, which are equidistantly mounted on the purification box. The first shell has two first connecting ports for connecting a first region and a second region, and the second shell has two second connecting ports for connecting a smoke guiding chamber and an exhaust port.

[0014] Compared with existing technologies, the energy-saving denitrification device provided by this utility model achieves active control of flue gas flow by setting a filtration mechanism consisting of a guide plate, a rotating baffle, and a drive end in the first area. When the flue gas enters the first area from the inlet, it must pass through the flow port on the guide plate. The drive end drives the rotating baffle to rotate, which can precisely control the opening area of ​​the flow port, allowing it to be partially opened, fully opened, or closed, thereby dynamically adjusting the flow rate of the flue gas entering the device. This enables the device to flexibly adjust the flue gas velocity according to actual working conditions, such as fluctuations in the flow rate of the external flue gas source or preset treatment requirements. When deep treatment is required, the opening of the flow port can be reduced to decrease the flue gas velocity and extend its residence time in the subsequent spray area, ensuring sufficient contact and reaction time between the flue gas and the spray liquid, significantly improving denitrification efficiency. When the treatment load is low, the opening can be increased to increase the treatment throughput and avoid equipment idleness, fundamentally overcoming the defect of uncontrollable flow in existing open structure devices. This design ensures stable and efficient spraying. By installing a housing inside the purification chamber, the internal space is scientifically divided into a first zone and a second zone. The first zone serves as the pretreatment area for flue gas, housing the filtration mechanism responsible for flue gas flow regulation and preliminary filtration. A partition on the back of the housing further divides the second zone into a smoke guiding chamber and a water storage chamber. The smoke guiding chamber is dedicated to guiding the flue gas and the spraying reaction, while the water storage chamber is used to store and mix the spraying liquid. This ensures that each treatment stage does not interfere with the others, resulting in a clear process. This not only improves space utilization efficiency but also facilitates equipment maintenance and management. The filter screen in the filtration mechanism effectively intercepts large particles of dust and impurities in the flue gas, protecting the subsequent spray heads and the reaction environment. The spraying mechanism is directly installed in the smoke guiding chamber, enabling precise and efficient spraying treatment of the flue gas after flow regulation and preliminary filtration. Simultaneously, the stirring mechanism continuously operates in the water storage chamber to ensure uniform spraying liquid concentration, preventing reagent precipitation and inactivation, thereby guaranteeing the reactivity of the spraying liquid. Attached Figure Description

[0015] Figure 1 This is an internal schematic diagram of the energy-saving denitrification device provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the filtration mechanism of the energy-saving denitrification device provided in this embodiment of the utility model; Figure 3 This is a schematic diagram of the interior of the smoke guiding chamber and water storage chamber of the energy-saving denitrification device provided in this embodiment of the utility model; Figure 4 This is a top view of the first and second housings of the energy-saving denitrification device provided in this embodiment of the utility model; Figure 5 This is a schematic diagram of the drive end structure of the energy-saving denitrification device provided in this embodiment of the utility model; Figure 6 This is a schematic diagram of the exhaust port structure of the energy-saving denitrification device provided in this embodiment of the utility model.

[0016] Explanation of reference numerals in the attached drawings: 1. Purification box; 11. Air inlet; 12. Exhaust outlet; 13. Mounting shell; 14. Partition; 141. Smoke guide chamber; 1411. Vertical plate; 142. Water storage chamber; 2. Filtration mechanism; 21. Air guide plate; 211. Flow port; 22. Rotating shield; 221. Shield plate; 222. Connecting port; 23. Filter screen; 24. Drive end; 241. First shaft; 242. First gear; 243. Cleaning scraper; 3. Spraying mechanism; 31. Water guide pipe; 32. Pump body; 33. Spray head; 4. Stirring mechanism; 41. Drive motor; 42. Second shaft; 43. Second gear; 44. Spiral stirring blade; 5. Air guide shell; 51. First shell; 511. First connecting port; 52. Second shell; 521. Second connecting port. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model 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 merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of an energy-saving denitrification device in one embodiment of the present invention. An energy-saving denitrification device includes: The purification box 1 has an air inlet 11 and an exhaust outlet 12 at its two ends respectively. The purification box 1 is equipped with an installation shell 13, which divides the interior of the purification box 1 into a first area and a second area. A partition 14 is connected to the back of the installation shell 13, which divides the second area into a smoke guiding chamber 141 and a water storage chamber 142. The filtration mechanism 2 includes an air guide plate 21, a rotating baffle 22, and a filter screen 23. The air guide plate 21 is installed in the first area and has multiple flow ports 211. The rotating baffle 22 is rotatably connected to the outer wall of the air guide plate 21 via a drive end 24 and is used to block or open the flow ports 211. A filter screen 23 is also provided inside the purification box 1 and near the air guide plate 21. The spraying mechanism 3 is installed in the smoke guiding chamber 141 and is used to spray the exhaust gas. A stirring mechanism 4 is installed in the water storage chamber 142 and is used to mix the spray liquid. Air guide shell 5, which is used to connect the first region and the second region.

[0019] In this embodiment, by setting a filter mechanism 2 consisting of a guide plate 21, a rotating baffle 22, and a drive end 24 in the first area, active control of the flue gas flow rate is achieved. When the flue gas enters the first area from the inlet 11, it must pass through the flow port 211 on the guide plate 21. The drive end 24 drives the rotating baffle 22 to rotate, which can precisely control the opening area of ​​the flow port 211, allowing it to be partially opened, fully opened, or closed, thereby dynamically adjusting the flue gas flow rate entering the device. This enables the device to flexibly adjust the flue gas velocity according to actual working conditions, such as fluctuations in the external flue gas source flow rate or preset treatment requirements. When deep treatment is required, the opening of the flow port 211 can be reduced to decrease the flue gas velocity and extend its residence time in the subsequent spray area, ensuring sufficient contact and reaction time between the flue gas and the spray liquid, significantly improving the denitrification efficiency. When the treatment load is low, the opening can be increased to increase the treatment throughput and avoid equipment idleness. This fundamentally overcomes the defect of uncontrollable flow rate in existing open structure devices, ensuring stable and high spray efficiency. By installing a housing 13 inside the purification chamber 1, the internal space is scientifically divided into a first zone and a second zone. The first zone serves as the pretreatment zone for flue gas, housing the filtration mechanism 2, which is responsible for flue gas flow regulation and preliminary filtration. A partition 14 on the back of the housing 13 further divides the second zone into a smoke-guiding chamber 141 and a water storage chamber 142. The smoke-guiding chamber 141 is dedicated to guiding the flue gas and the spray reaction, while the water storage chamber 142 is used to store and mix the spray liquid, ensuring that each treatment stage does not interfere with the others, resulting in a clear process. Not only does it improve space utilization efficiency, but it also facilitates equipment maintenance and management. The filter screen 23 located in the filtration mechanism 2 can effectively intercept large particles of dust and impurities in the flue gas, protecting the subsequent spray head 33 and the reaction environment. The spray mechanism 3 is directly installed in the smoke guiding chamber 141, which can perform precise and efficient spraying treatment on the flue gas after flow regulation and preliminary filtration. At the same time, the stirring mechanism 4 works continuously in the water storage chamber 142 to ensure uniform concentration of the spray liquid and avoid reagent precipitation failure, thereby ensuring the reactivity of the spray liquid.

[0020] In one embodiment, please refer to Figure 1 - Figure 3 To facilitate control of the flow rate of flue gas entering the smoke guiding chamber 141, the number of flow ports 211 is at least three. The three flow ports 211 are arranged circumferentially around the center of the air guide plate 21 on the surface of the air guide plate 21, and the cross-section of any flow port 211 is fan-shaped. The rotating shield 22 includes a shield plate 221, on which three connecting ports 222 corresponding to the flow ports 211 are opened. The shield plate 221 is rotatably connected to the drive end 24. The drive end 24 includes a first shaft 241 and a first gear 242. The first shaft 241 is axially arranged in the first region, and the shield plate 221 is fixed on the first shaft 241. The first gear 242 is fixed on the first shaft 241 and meshes with the output end of the stirring mechanism 4. A cleaning scraper 243 is installed on both sides of the filter screen 23 at the outer end of the first shaft 241. The side of the cleaning scraper 243 facing the filter screen 23 abuts against it.

[0021] In this embodiment, by setting the flow ports 211 on the air guide plate 21 as at least three fan-shaped structures and circumferentially arranged around the center, and simultaneously setting corresponding connecting ports 222 on the baffle plate 221, when the drive end 24 drives the baffle plate 221 to rotate relative to the air guide plate 21, the overlapping area between the two will change continuously and smoothly. This allows the flow area of ​​the flue gas to be adjusted from completely closed to completely open. Compared with only one or two flow ports 211, the multi-fan-shaped circumferential arrangement structure can provide a more refined flow control gradient, avoid the impact of sudden flow changes on the device, ensure a smooth transition of flue gas velocity, and provide stable and controllable airflow conditions for subsequent spraying reactions, greatly improving the continuity and stability of the denitrification process. By directly meshing the first gear 242 fixed on the first shaft 241 with the output end of the stirring mechanism 4, the power output of the stirring mechanism 4 is directly transmitted while driving the spiral stirring blades 44 in the water storage chamber 142 to mix the liquid. The first shaft 241 is connected to the first shaft, which synchronously drives the rotating shield 22 and the cleaning scraper 243 to operate. This allows for synchronized operation of flue gas flow regulation, filter screen 23 cleaning, and spray liquid agitation. Cleaning scrapers 243 are installed on both sides of the filter screen 23 and at the outer end of the first shaft 241. The cleaning scrapers 243 abut against the surface of the filter screen 23. As the first shaft 241 rotates continuously under the linkage drive, the cleaning scrapers 243 installed at both ends scrape the two sides of the filter screen 23 synchronously. Each filter screen 23 is equipped with a cleaning scraper 243, which can simultaneously remove dust and impurities adhering to both the windward and leeward sides of the filter screen 23. The cleaning effect is thorough and far superior to single-sided cleaning. The cleaning process is completed automatically during normal operation of the device, without the need for manual cleaning during shutdown. This achieves online self-cleaning of the filter screen 23, greatly reducing maintenance frequency and labor costs. It also removes blockages on the filter screen 23 in a timely manner, effectively preventing the problem of reduced flow area caused by dust accumulation on the filter screen 23, and ensuring the accuracy of flue gas flow regulation and the long-term efficient operation of the entire device.

[0022] In one embodiment, please refer to Figure 1 - Figure 6To improve flue gas spraying efficiency, multiple vertical plates 1411 are installed in the flue gas guiding chamber 141, forming a flue gas flow channel within the chamber. The spraying mechanism 3 includes a water guide pipe 31, a pump body 32, and a spray head 33. One end of the pump body 32 is connected to the water storage chamber 142, and the other end is connected to the water guide pipe 31. The end of the water guide pipe 31 extends into the flue gas guiding chamber 141 and is connected to the spray head 33. The stirring mechanism 4 includes a drive motor 41, a second shaft 42, a second gear 43, and a spiral stirring blade 44. The drive motor 41 is installed in the mounting housing 13, and the output end of the drive motor 41 is connected to the second shaft 42. One axial end of the second shaft 42 extends into the water storage chamber 142. A second gear 43 is fixed in the mounting housing 13 and on the second shaft 42. Wheel 43 meshes with first gear 242 and is located in water storage chamber 142. Spiral stirring blades 44 are arranged circumferentially on the outer periphery of second shaft 42. The upper end face of mounting shell 13 is inclined. A drain port communicating with smoke guiding chamber 141 is opened on the back of purification box 1. A water inlet and a drain port communicating with water storage chamber 142 are opened sequentially from top to bottom on the front of purification box 1. Valves are provided on the drain port, water inlet and drain port. Air guiding shell 5 includes first shell 51 and second shell 52. First shell 51 and second shell 52 are installed equidistantly on purification box 1. Two first connecting ports 511 are opened on the first shell 51 for connecting the first area and the second area. Two second connecting ports 521 are opened on the second shell 52 for connecting smoke guiding chamber 141 and exhaust port 12.

[0023] In this embodiment, multiple vertical plates 1411 are arranged in the smoke guiding chamber 141 to form a meandering smoke guiding channel, forcing the flue gas to flow along a preset tortuous path before being discharged. This prolongs the actual travel and residence time of the flue gas in the spraying area, providing more sufficient mixing and reaction opportunities for the flue gas and the spray liquid. The tortuous channel can effectively disrupt the laminar flow state of the flue gas, induce turbulence, enhance the disturbance inside the flue gas, and make it easier for NOx molecules in the flue gas to diffuse to the surface of the droplets, thereby significantly improving the mass transfer efficiency and chemical reaction rate. Combined with the spray head 33 spraying mist into the smoke guiding channel... The tortuous airflow path of the chemical spray solution allows for more even distribution of the spray liquid throughout the flue gas channel, effectively avoiding blind spots and ensuring that all flue gas is effectively treated, significantly improving the overall denitrification efficiency. The spiral stirring blades 44 in the stirring mechanism 4 rotate within the water storage chamber 142 under the drive of the motor 41. Their spiral structure generates strong axial and radial flow, powerfully stirring the spray liquid, such as alkaline or oxidant solutions, thoroughly breaking down concentration gradients, preventing reagent precipitation or stratification, and ensuring that the liquid drawn from the pump body 32 is always uniform and highly active. The uniform solution ensures consistent concentration of active ingredients in each spray, preventing incomplete denitrification due to localized low concentrations or waste due to localized high concentrations. This improves reaction consistency and economy. The direct meshing of the second gear 43 with the first gear 242 efficiently transmits the power output from the drive motor 41 to the first shaft 241 of the filter mechanism 2. The drive motor 41 simultaneously drives solution stirring, flue gas flow adjustment, and filter screen 23 cleaning. The upper surface of the mounting shell 13 is sloped to facilitate flue gas entry into the first shell 51. The front is designed with... The inlet and outlet are used to replenish fresh spray liquid to the water storage chamber 142 and to completely replace and clean the old liquid or sediment in the chamber, respectively. The valve settings allow for precise control of these operations, making them safe and convenient and greatly simplifying the daily maintenance process. The air guide shell 5 standardizes the originally potentially messy airflow channels. The first connecting port 511 and the second connecting port 521 serve as standardized interfaces, which not only ensure a smooth transition of airflow between the first area, the second area, the smoke guide chamber 141 and the exhaust port 12, but also reduce energy loss when the airflow turns, which helps to reduce the energy consumption of the fan.

[0024] To better understand this utility model, the following is combined with... Figures 1 to 6The technical solution of this utility model is described in detail as follows: The nitrogen oxide-containing flue gas to be treated enters the device through the air inlet 11 at one end of the purification box 1. The flue gas first enters the first area and directly reaches the guide plate 21. The drive end 24 starts to rotate under the power drive of the stirring mechanism 4. The first shaft 241 drives the baffle plate 221 on it to rotate synchronously. By controlling the relative position of the connecting port 222 on the baffle plate 221 and the fan-shaped flow port 211 on the guide plate 21, the overlap area between the two can be dynamically adjusted, thereby realizing continuous and stepless control of the flue gas flow cross-sectional area. This step is the first treatment process after the flue gas enters the device, which directly determines the... In subsequent processes, the flue gas velocity and flow rate are adjusted. When deep denitrification is required, the device opening is reduced to decrease the flue gas velocity; when the processing load is light, the opening is increased to improve processing efficiency. After the flue gas flow rate is regulated, it flows out of the flow port 211 of the guide plate 21 and then passes through the filter screen 23. The filter screen 23 intercepts large particles of dust, ash, and other impurities carried in the flue gas. Since the flue gas velocity has been precisely controlled in the previous step, this provides the filter screen 23 with more stable and suitable filtration conditions, effectively preventing high-speed airflow from impacting and damaging the filter screen 23 and preventing dust penetration. The filtered flue gas is initially purified, creating a clean environment for the subsequent spray reaction. The flue gas, after being regulated and pre-filtered, flows smoothly from the first region into the smoke-guiding chamber 141 of the second region through the first connecting port 511 in the air guide shell 5. The air guide shell 5 ensures a smooth airflow transition and reduces unnecessary energy loss. The flue gas entering the smoke-guiding chamber 141 is guided by multiple internal vertical plates 1411, forced to move along a pre-set, meandering smoke-guiding channel. This greatly extends the flue gas's travel distance and residence time in the spray area. The tortuous channel disrupts the laminar flow of the flue gas, inducing strong turbulence, enhancing the internal disturbance and mixing of the flue gas, and making it easier for NOx molecules to contact the droplets. The pump body 32 pumps from the water storage chamber 142... The fully activated uniform spray liquid is extracted and transported to the spray head 33 in the smoke guiding chamber 141 through the water guide pipe 31. The spray head 33 atomizes the liquid and sprays it evenly in the meandering smoke guiding channel. Under the combined action of turbulence, extended residence time and pre-treated clean flue gas, the atomized spray liquid and flue gas achieve full and efficient contact and chemical reaction, converting NOx into harmless or easily removed substances, such as nitrates. The purified flue gas, which has completed the denitrification reaction, continues to move along the smoke guiding channel and finally enters the exhaust channel through the second connecting port 521 in the second shell 52, and is discharged from the exhaust port 12 at the other end of the purification box 1, achieving standard emission. It should be noted that before the flue gas is introduced into the purification box 1, the drive motor 41 of the device is started first. The drive motor 41 drives the second shaft 42 to rotate, and the second gear 43 on it rotates accordingly. The second gear 43 meshes with the first gear 242, transmitting power to the first shaft 241, thereby synchronously driving the rotating shield 22 and the cleaning scraper 243 to operate. At this time, the stirring mechanism 4 starts to work, and the spiral stirring blades 44 strongly stir the spray liquid in the water storage chamber 142 to ensure that the agent is fully dissolved and mixed evenly, breaking any possible concentration. Gradient or sedimentation allows the spray liquid to reach its optimal reactive state. At the same time, the cleaning scraper 243 thoroughly cleans the filter screen 23, removing any residue that may be attached, ensuring the initial permeability of the filter screen 23. After a period of pre-processing, the operator adjusts the rotating baffle 22 to a preset opening of the flow port 211 suitable for the current expected flue gas load, such as a partially open state, to set a reference flow rate for subsequent flue gas treatment. When adjustments are needed, the opening of the flow port 211 is adjusted to prevent the baffle 221 from rotating continuously.

[0025] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. An energy-saving denitrification device, characterized in that, include: The purification box has an air inlet and an exhaust outlet at both ends. The purification box is equipped with an installation shell, which divides the interior of the purification box into a first area and a second area. A partition is connected to the back of the installation shell, which divides the second area into a smoke guiding chamber and a water storage chamber. The filtration mechanism includes an air guide plate, a rotating shield, and a filter screen. The air guide plate is installed in the first area and has multiple flow ports. The rotating shield is rotatably connected to the outer wall of the air guide plate via a drive end and is used to block or open the flow ports. A filter screen is also provided inside the purification box and near the air guide plate. A spraying mechanism, installed in the smoke guiding chamber, is used to spray exhaust gas; A stirring mechanism, installed in the water storage chamber, is used to mix the spray liquid; A gas guide shell, used to connect the first region and the second region.

2. The energy-saving denitrification device according to claim 1, characterized in that: Multiple vertical plates are installed in the smoke guiding chamber, forming a smoke guiding channel within the chamber.

3. The energy-saving denitrification device according to claim 1, characterized in that: The number of flow ports is at least three, and the three flow ports are arranged circumferentially around the center of the air guide plate on the surface of the air guide plate, and the cross-section of any one of the flow ports is fan-shaped.

4. The energy-saving denitrification device according to claim 3, characterized in that: The rotating shielding component includes a shielding plate, which has three communication ports that correspond one-to-one with the flow port, and the shielding plate is rotatably connected to the driving end.

5. The energy-saving denitrification device according to claim 4, characterized in that: The drive end includes a first shaft and a first gear. The first shaft is axially disposed in the first region and the baffle plate is fixed on the first shaft. The first gear is fixed on the first shaft and meshes with the agitation mechanism at the output end.

6. The energy-saving denitrification device according to claim 5, characterized in that: A cleaning scraper is installed at the outer end of the first shaft and on both sides of the filter screen, with the side of the cleaning scraper facing the filter screen abutting against it.

7. The energy-saving denitrification device according to claim 1, characterized in that: The spraying mechanism includes a water guide pipe, a pump body, and a spray head. One end of the pump body is connected to the water storage chamber, and the other end is connected to the water guide pipe. The end of the water guide pipe extends into the smoke guiding chamber and is connected to the spray head.

8. The energy-saving denitrification device according to claim 5, characterized in that: The agitation mechanism includes a drive motor, a second shaft, a second gear, and spiral stirring blades. The drive motor is installed inside the mounting housing, and the output end of the drive motor is connected to the second shaft. One axial end of the second shaft extends into the water storage chamber. The second gear is fixed inside the mounting housing and on the second shaft. The second gear meshes with the first gear and is located inside the water storage chamber. Spiral stirring blades are arranged circumferentially on the outer periphery of the second shaft.

9. The energy-saving denitrification device according to claim 1, characterized in that: The upper surface of the mounting shell is inclined, and the back of the purification box is provided with a drain port that communicates with the smoke guiding chamber. The front of the purification box is provided with a water inlet and a water outlet that communicate with the water storage chamber from top to bottom, and valves are provided on the drain port, the water inlet and the water outlet.

10. The energy-saving denitrification device according to claim 1, characterized in that: The air guide shell includes a first shell and a second shell, which are equidistantly installed on the purification box. The first shell has two first connecting ports for connecting a first area and a second area, and the second shell has two second connecting ports for connecting a smoke guiding chamber and an exhaust port.

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