Tail gas treatment and purification device for new energy boiler

Abstract

The invention relates to the technical field of boiler tail gas treatment, in particular to a tail gas treatment and purification device for a new energy boiler, which comprises a water treatment tank internally provided with a treatment solvent, a pipeline is fixedly arranged at the side part of the water treatment tank, and a purification gas outlet pipe is fixedly arranged at the top of the water treatment tank. According to the tail gas treatment and purification device for the new energy boiler, the net plate is driven to reset through the reset spring, impurities in a treatment solvent are captured through the net plate in the rotation process of the net plate, and compared with an existing stirring and top filtering structure, the net plate can be controlled to do reciprocating motion through ventilation air pressure changes, so that the tail gas treatment and purification effect is improved. On one hand, the horizontally-arranged net plate is matched with the gas spraying pipe to conduct scattered array gas outlet, vibration caused by a stirring structure can be avoided while the gas-liquid mixing effect is guaranteed, on the other hand, most impurities in the treatment solvent are caught through resetting of the net plate, and follow-up replacement and secondary utilization of the treatment solvent are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of boiler tail gas treatment, and in particular to a tail gas treatment and purification device for a new energy boiler. Background Art

[0002] As the use of coal-fired boilers is gradually restricted, other alternative fuels have a large market space. Among them, biomass fuel is a renewable energy source. However, the exhaust gas emitted by coal or biomass such as rice husks and straw contains a large amount of fine dust and harmful acidic gases. The exhaust gas must be effectively desulfurized, denitrified, and dust-removed before discharge to meet environmental emission requirements.

[0003] An existing patent (publication number: CN117258435B) discloses a high-efficiency, energy-saving, and environmentally friendly exhaust gas treatment device for combustion boilers. The device comprises a main body, the bottom of which is fixedly connected to a device base, and one side of which is fixedly connected to an exhaust gas inlet. The limiting cylinder contracts, thereby driving the second limiting block upward, thereby canceling the limiting effect on the energy storage ratchet. The energy storage ratchet then drives the first half gear to rotate via the second transmission shaft, thereby moving the first movable rack, which in turn causes the first and second diverter plates to move to the right, allowing the exhaust gas to enter the bag filter below, thereby cooling the other bag filter. The above-mentioned prior art utilizes stirring to assist gas-liquid mixing, which can easily increase equipment vibration. Furthermore, debris scraped off the filter screen accumulates in the treatment liquid, affecting the purification effect.

[0004] In view of this, we propose an exhaust gas treatment and purification device for new energy boilers. Summary of the Invention

[0005] The purpose of the present invention is to provide an exhaust gas treatment and purification device for a new energy boiler, so as to solve the problem proposed in the above background technology that the existing technology uses stirring to assist gas-liquid mixing, which easily increases the vibration of the equipment, and the debris scraped off the filter accumulates in the treatment liquid, affecting the purification effect. In order to achieve the above purpose, the present invention provides the following technical solutions: an exhaust gas treatment and purification device for a new energy boiler, comprising a water treatment tank with a treatment solvent inside, and a pipe is fixedly provided on the side of the water treatment tank, a purified air outlet pipe is fixedly provided on the top of the water treatment tank, and a filter is fixedly provided on the upper side of the water treatment tank, and a water filter is provided inside the water treatment tank to match the pipe.

[0006] The water filter includes a rotating shaft with a hollow structure that is rotatably arranged inside the water treatment tank, and a circular air pressure chamber is opened inside the box wall on one side of the water treatment tank. One end of the rotating shaft extends into the air pressure chamber, and an airtight flap that cooperates with the air pressure chamber is fixedly arranged on the extended end of the rotating shaft.

[0007] An airtight baffle matched with the airtight flap is fixedly mounted on the inner wall of the air pressure chamber, and a return spring is arranged between the airtight baffle and the airtight flap.

[0008] An air groove communicated with the pipeline is provided in the box wall of the water treatment box on one side close to the pipeline, and the air groove is communicated with the air pressure chamber.

[0009] The rotating shaft is located on the axial surface of the air pressure chamber and is provided with an air port for controlling air intake.

[0010] A mesh plate for filtering impurities inside the solvent is fixedly connected to the rotating shaft, an air jet pipe is fixedly embedded on the surface of the mesh plate, and the air jet pipe passes through the mesh plate and is communicated with the interior of the rotating shaft.

[0011] The water treatment box and the mesh plate are provided with a cleaning filter screen and a two-way cleaning component for filtering objects on the mesh plate surface.

[0012] Preferably, the two-way cleaning assembly includes a guide rod fixedly arranged inside the water treatment tank, and the guide rod is located on the lower side of the filter screen, a first scraper that cooperates with the filter screen is slidably connected to the guide rod, and a push spring that cooperates with the first scraper is provided on the guide rod.

[0013] A force-bearing plate pushed by the upward rotating screen is fixedly arranged at the bottom of the first scraper.

[0014] Two slide grooves are provided on the side surface of the mesh plate, and slide seats are slidably connected in the two slide grooves. The slide seats are connected to the inner top walls of the slide grooves through elastic ropes, and the elastic ropes pull the slide seats upward.

[0015] The outer sides of the two sliding seat surfaces are fixedly connected with second scrapers which are pushed by the force-bearing plate to scrape the screen.

[0016] After the second scraper moves down to the bottom, the area between it and the mesh plate and the inner wall of the water treatment box is set as a water-proof squeezing area, and the outer wall of the water treatment box is provided with a cleaning port connected to the water-proof squeezing area, and a sealing plug is provided in the cleaning port.

[0017] The load-bearing plate is provided with an anti-blocking component that matches the mesh plate.

[0018] Preferably, the anti-blocking component includes a leather cup fixedly mounted on the surface of the force-bearing plate and corresponding to the mesh holes of the mesh plate, and a plurality of through holes are opened on the surface of the leather cup, and a leather pad covering the through holes is provided on the outer surface of the leather cup, and the leather pad is locally fixed to the leather cup at a single point along one side.

[0019] Preferably, the water treatment tank is fixedly connected to the front-end treatment equipment through a pipeline, and an exhaust gas inlet pipe is fixedly provided on one side of the front-end treatment equipment.

[0020] Preferably, a plurality of embedding grooves are provided on the surface of the mesh plate, and the air injection pipe is snap-fitted into the embedding grooves via a snap-fit ​​structure.

[0021] Preferably, the air injection pipe is screwed to the rotating shaft via a threaded structure.

[0022] Preferably, a limiting block cooperating with the first scraper is fixedly provided on the guide rod.

[0023] Preferably, a plurality of anti-disturbance flow grooves are provided on the load-bearing plate.

[0024] Preferably, a connecting buckle is fixedly provided at the tail of the leather cup, and the connecting buckle is fixedly connected to the force-bearing plate by bolts.

[0025] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, when the jet treatment is completed, the reset spring drives the screen to reset, and during the rotation of the screen, it is used to capture flocculants and debris in the treatment solvent. Compared with the existing stirring and top filtering structure, the above-mentioned screen can use the ventilation air pressure change to control the reciprocating motion of the screen. On the one hand, the flat screen is used in conjunction with the jet pipe to disperse the array gas, while ensuring the gas-liquid mixing effect, it can also avoid the vibration caused by the stirring structure. On the other hand, the screen reset is used to capture most of the debris in the treatment solvent, which is convenient for the subsequent replacement and secondary use of the treatment solvent.

[0026] In the present invention, the first scraper is pushed to the left along the force-bearing plate by the mesh plate to scrape off the debris adhered to the filter screen. At the same time, the force-bearing plate pushes the second scraper downward along the upward rotating mesh plate to scrape off the debris on the mesh plate until a water-proof squeezing area is formed between the second scraper and the mesh plate and the inner wall of the water treatment tank. In this process, the second scraper presses the debris captured by the mesh plate into the water-proof squeezing area. Compared with the existing method of scraping filtered debris into water, the above-mentioned force-bearing plate cooperates with the deflection process of the mesh plate. On the one hand, the scraping and sliding operation of the first scraper can be used to drive the second scraper to clean the mesh plate. On the other hand, the relevant components can be controlled to form a water-proof squeezing area, and the debris scraped off the filter screen and the mesh plate can be sealed into the water-proof squeezing area for cleaning, so as to avoid excessive debris affecting the treatment effect of the exhaust gas and effectively extend the service life of the treatment solvent.

[0027] In the present invention, after the force-bearing plate is pushed back to its position by the mesh plate, the two plate surfaces fit together, the air pressure in the leather cup squeezes the leather pad, and the through hole is used to release the pressure, so that the leather cup on the force-bearing plate is pressed and adsorbed on the mesh of the mesh plate. When the mesh plate is deflected and separated from the force-bearing plate, the leather pad seals the through hole, so that the leather cup is subjected to negative pressure along the mesh plate and the blockage in the mesh is sucked out. Compared with the existing single filtering structure, the movement coordination between the above-mentioned force-bearing plate and the mesh plate can control the leather cup to realize adsorption and negative pressure stripping operations along the mesh of the mesh plate, thereby ensuring that the mesh plate always has a good air permeability and avoiding mesh plate blockage affecting the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural cross-sectional view of the water treatment tank of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 It is a front cross-sectional view of the water treatment tank of the present invention; Figure 5 It is a front cross-sectional view of the air groove and the air pressure chamber of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle; Figure 7 It is a schematic diagram of the three-dimensional structure of the screen plate, rotating shaft and air injection pipe of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of point C in the middle; Figure 9 A partial cross-sectional view of the screen plate and the air injection pipe of the present invention; Figure 10 It is a structural schematic diagram of the force-bearing plate and the leather cup of the present invention; Figure 11 It is a three-dimensional structural sectional view of the leather cup of the present invention.

[0029] In the figure: 1. Water treatment box; 2. Filter screen; 3. Water filter; 31. Rotating shaft; 32. Air pressure chamber; 33. Airtight flap; 34. Airtight baffle; 35. Return spring; 36. Air groove; 37. Air port; 38. Mesh plate; 39. Air jet tube; 310. Two-way cleaning assembly; 3101. Guide rod; 3102. First scraper; 3103. Push spring; 3104. Force plate; 3105. Slide; 3106. Slide seat; 3107. Elastic rope; 3108. Second scraper; 3109. Water-proof squeezing area; 31010. Cleaning port; 31011. Sealing plug; 31012. Anti-blocking assembly; 310121. Leather cup; 310122. Through hole; 310123. Leather pad. DETAILED DESCRIPTION

[0030] 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. All other embodiments obtained by ordinary technical personnel in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] See also Figures 1 to 11 The present invention provides a technical solution: a tail gas treatment and purification device for a new energy boiler, comprising a water treatment tank 1 with a treatment solvent inside, and a pipe fixedly provided on the side of the water treatment tank 1, a purified gas outlet pipe fixedly provided on the top of the water treatment tank 1, and a filter 2 fixedly provided on the upper side of the water treatment tank 1. Exhaust gas enters the tank along the lower side through the pipe and mixes with the treatment solvent. The treated and purified gas is finally discharged through the filter 2. A water filter 3 is provided inside the water treatment tank 1 to match the pipe. The water filter 3 includes a hollow rotating shaft 31 rotatably disposed within the water treatment tank 1. A circular air pressure chamber 32 is defined within one side of the water treatment tank 1. One end of the rotating shaft 31 extends through the air pressure chamber 32, and an airtight flap 33 is fixedly disposed on the extended end of the rotating shaft 31 to engage with the air pressure chamber 32. An airtight baffle 34 is fixedly mounted on the inner wall of the air pressure chamber 32 and matches the airtight flap 33 , and a return spring 35 is provided between the airtight baffle 34 and the airtight flap 33 ; An air groove 36 connected to the pipeline is provided in the wall of the water treatment tank 1 on the side close to the pipeline, and the air groove 36 is connected to the air pressure chamber 32. When the exhaust gas enters the water treatment tank 1 along the pipeline, it first enters the air groove 36 and is introduced into the air pressure chamber 32 to exert a thrust on the airtight flap 33, causing it to compress the return spring 35 and move toward the airtight baffle 34. During this process, the rotating shaft 31 and the mesh plate 38 rotate until the mesh plate 38 deflects from a vertical position to a horizontal position at the bottom of the water treatment tank 1. When the air jet treatment is completed, the return spring 35 drives the mesh plate 38 to return to its original position, and during the rotation of the mesh plate 38, it is used to capture flocculants and debris in the treatment solvent. The rotating shaft 31 is provided with an air port 37 on the axial surface of the air pressure chamber 32 for controlling the air intake; A mesh plate 38 for filtering impurities inside the treatment solvent is fixedly connected to the rotating shaft 31, and the mesh plate 38 is vertically fixed to the upper side of the surface of the rotating shaft 31. An air jet 39 is fixedly embedded on the surface of the mesh plate 38, and the air jet 39 passes through the mesh plate 38 and communicates with the interior of the rotating shaft 31. When the mesh plate 38 is deflected to lie flat on the bottom of the water treatment tank 1, the air port 37 communicates with the air inlet area of ​​the air pressure chamber 32, and the exhaust gas enters the interior of the rotating shaft 31 and is sprayed into the treatment solvent along the air jet 39, and the exhaust gas is treated by the treatment solvent. The water treatment box 1 and the mesh plate 38 are provided with a two-way cleaning assembly 310 for cleaning the filter screen 2 and the filtered matter on the surface of the mesh plate 38.

[0032] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 11 As shown, the two-way cleaning assembly 310 includes a guide rod 3101 fixedly arranged inside the water treatment tank 1, and the guide rod 3101 is located on the lower side of the filter 2. A first scraper 3102 that cooperates with the filter 2 is slidably connected to the guide rod 3101, and a push spring 3103 that cooperates with the first scraper 3102 is provided on the guide rod 3101; A force-bearing plate 3104 is fixedly provided at the bottom of the first scraper 3102 and is pushed by the upward rotating mesh plate 38; Two chute grooves 3105 are formed on the side surface of the mesh plate 38, and a slide 3106 is slidably connected to each of the chute grooves 3105. The slide 3106 is connected to the inner top wall of the chute 3105 via an elastic cord 3107. The elastic cord 3107 pulls the slide 3106 upward. When the mesh plate 38 deflects and lies flat, the elastic cord 3107 contracts to pull the second scraper 3108 upward, while the push spring 3103 pushes the first scraper 3102 to the right. The outer sides of the two sliding seats 3106 are fixedly connected with a second scraper 3108 which is pushed by the force-bearing plate 3104 to scrape the screen 38; After the second scraper 3108 moves down to the bottom, the area between it and the mesh plate 38 and the inner wall of the water treatment tank 1 is set as a water-isolating squeezing area 3109. When the mesh plate 38 rotates and resets, the mesh plate 38 pushes the first scraper 3102 to the left along the force-bearing plate 3104 to scrape off the debris adhering to the filter screen 2. At the same time, the force-bearing plate 3104 pushes the second scraper 3108 down along the upward rotating mesh plate 38 to scrape off the debris on the mesh plate 38 until the second scraper 3108 and the mesh plate 38 and the inner wall of the water treatment tank 1 are separated. A water-isolating squeeze zone 3109 is formed between the inner walls of the water treatment tank 1, and during this process, the second scraper 3108 presses the debris captured by the mesh plate 38 into the water-isolating squeeze zone 3109. A cleaning port 31010 communicating with the water-isolating squeeze zone 3109 is formed on the outer wall of the water treatment tank 1. A sealing plug 31011 is provided in the cleaning port 31010. After opening the sealing plug 31011, debris in the water-isolating squeeze zone 3109 can be removed through the cleaning port 31010. An anti-blocking component 31012 that cooperates with the mesh plate 38 is provided on the load-bearing plate 3104.

[0033] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 11As shown, the anti-blocking component 31012 includes a leather cup 310121 fixedly mounted on the surface of the force-bearing plate 3104 and corresponding to the mesh of the mesh plate 38, and a plurality of through holes 310122 are opened on the surface of the leather cup 310121, and a leather pad 310123 covering the through holes 310122 is provided on the outer surface of the leather cup 310121, and the leather pad 310123 is locally fixed to the leather cup 310121 at a single point along one side, and the mesh plate 38 and the force-bearing plate are fixed to each other. The surfaces of the 3104 plates fit together, and the air pressure in the leather cup 310121 squeezes open the leather pad 310123, and the pressure is released through the through hole 310122, so that the leather cup 310121 on the force-bearing plate 3104 is pressed and adsorbed on the mesh of the screen 38. When the screen 38 is deflected and separated from the force-bearing plate 3104, the leather pad 310123 seals the through hole 310122, so that the leather cup 310121 generates negative pressure along the screen 38 and sucks out the blockage in the mesh.

[0034] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 11 As shown, the water treatment tank 1 is fixedly connected to the front-end treatment equipment through a pipeline, and an exhaust gas inlet pipe is fixedly provided on one side of the front-end treatment equipment. The exhaust gas generated by the new energy boiler enters the front-end treatment equipment along the exhaust gas inlet pipe, and is injected into the water treatment tank 1 along the pipeline after preliminary treatment.

[0035] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 11 As shown, a plurality of embedding grooves are provided on the surface of the mesh plate 38, and the air injection tube 39 is snapped into the embedding groove by a snap-fit ​​structure, which ensures that the air injection tube 39 can be stably installed in the embedding groove for use, and also enables the air injection tube 39 to be easily removed from the embedding groove.

[0036] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 11 As shown, the air jet tube 39 is screwed to the rotating shaft 31 via a threaded structure. The air jet tube 39 can be disassembled from the rotating shaft 31 by rotating it, making it easy for the user to separate the air jet tube 39 from the rotating shaft 31.

[0037] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 11As shown, a limit block that cooperates with the first scraper 3102 is fixedly provided on the guide rod 3101. After the first scraper 3102 is pushed by the push spring 3103, the limit block restricts it from moving to the extent of clamping the mesh plate 38 to rotate upward, and also enables the mesh plate 38 to have sufficient upward rotation inclination to push the force plate 3104 to move.

[0038] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 11 As shown, a plurality of anti-disturbance flow grooves are provided on the force-bearing plate 3104. When the force-bearing plate 3104 moves, the anti-disturbance flow grooves can reduce the disturbance to the treatment solvent inside the water treatment tank 1, and can effectively reduce the vibration of the device during operation.

[0039] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 11 As shown, a connecting buckle is fixedly provided at the tail of the leather cup 310121, and the connecting buckle is fixedly connected to the force plate 3104 by bolts. The leather cup 310121 can be removed from the force plate 3104 through the connecting buckle by unscrewing the bolts, so that the user can replace and repair the leather cup 310121 conveniently.

[0040] The use method and advantages of the present invention: When the tail gas treatment and purification device for new energy boiler is in operation and use, the working process is as follows: like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 11 As shown: S1. The exhaust gas generated by the new energy boiler enters the front-end treatment equipment along the exhaust gas inlet pipe. After preliminary treatment, it is injected into the water treatment tank 1 along the pipeline. The exhaust gas enters along the lower side of the tank and mixes with the treatment solvent. The treated and purified gas is finally discharged through the filter 2; S2. When the exhaust gas enters the water treatment tank 1 along the pipeline, it first enters the air groove 36 and is introduced into the air pressure chamber 32 to exert a thrust on the airtight flap 33, causing it to compress the return spring 35 and move toward the airtight baffle 34. During this process, the rotating shaft 31 and the mesh plate 38 rotate until the mesh plate 38 deflects from a vertical position to a horizontal position at the bottom of the water treatment tank 1. At this time, the air port 37 is connected to the air inlet area of ​​the air pressure chamber 32, and the exhaust gas enters the interior of the rotating shaft 31 and is sprayed into the treatment solvent along the injection pipe 39, and the exhaust gas is treated by the treatment solvent; S3. When the air jet treatment is finished, the reset spring 35 drives the screen 38 to reset, and uses it to capture flocculants and debris in the treatment solvent during the rotation of the screen 38; S4. During the deflection and horizontal positioning of the mesh plate 38, the elastic rope 3107 contracts to pull the second scraper 3108 upward, while the push spring 3103 pushes the first scraper 3102 to the right. When the mesh plate 38 rotates and returns to its original position, the mesh plate 38 pushes the first scraper 3102 to the left along the force-bearing plate 3104, scraping off debris adhering to the filter screen 2. Simultaneously, the force-bearing plate 3104 pushes the second scraper 3108 downward along the upwardly rotating mesh plate 38, scraping off debris on the mesh plate 38, until a water-isolating squeeze zone 3109 is formed between the second scraper 3108, the mesh plate 38, and the inner wall of the water treatment tank 1. During this process, the second scraper 3108 presses the debris captured by the mesh plate 38 into the water-isolating squeeze zone 3109. S5. After the mesh plate 38 pushes the force-bearing plate 3104 back to its original position, the two plate surfaces fit together, the air pressure in the leather cup 310121 squeezes the leather pad 310123, and the pressure is released through the through hole 310122, so that the leather cup 310121 on the force-bearing plate 3104 is pressed and adsorbed on the mesh of the mesh plate 38. When the mesh plate 38 is deflected and separated from the force-bearing plate 3104, the leather pad 310123 seals the through hole 310122, so that the leather cup 310121 is subjected to negative pressure along the mesh plate 38, and the blockage in the mesh is sucked out.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A tail gas treatment and purification device for a new energy boiler, comprising a water treatment box (1) with a treatment solvent inside, and a pipeline is fixedly arranged on the side of the water treatment box (1), a purification outlet pipe is fixedly arranged on the top of the water treatment box (1), and a filter screen (2) is fixedly arranged on the upper side of the water treatment box (1), characterized in that: The water treatment box (1) is provided with a water filter (3) matched with the pipeline inside; The water filter (3) comprises a rotating shaft (31) of a hollow structure rotatably arranged inside the water treatment box (1), and a circular air pressure chamber (32) is provided inside one side wall of the water treatment box (1), one end of the rotating shaft (31) extends through the air pressure chamber (32), and an airtight flap (33) matching the air pressure chamber (32) is fixedly arranged on the extended end of the rotating shaft (31); An airtight baffle (34) matching with the airtight flap (33) is fixedly mounted on the inner wall of the air pressure chamber (32), and a return spring (35) is arranged between the airtight baffle (34) and the airtight flap (33); An air groove (36) connected to the pipeline is provided in the wall of the water treatment box (1) on one side close to the pipeline, and the air groove (36) is connected to the air pressure chamber (32); The rotating shaft (31) is provided with an air port (37) for controlling air intake on the axial surface of the air pressure chamber (32); A mesh plate (38) for filtering impurities inside the solvent is fixedly connected to the rotating shaft (31), and an air jet pipe (39) is fixedly embedded on the surface of the mesh plate (38), and the air jet pipe (39) passes through the mesh plate (38) and is in communication with the interior of the rotating shaft (31); The water treatment box (1) and the mesh plate (38) are provided with a two-way cleaning component (310) for cleaning the filter screen (2) and the filtered material on the surface of the mesh plate (38).

2. The tail gas treatment and purification device for a new energy boiler according to claim 1 is characterized in that: The bidirectional cleaning assembly (310) comprises a guide rod (3101) fixedly arranged inside the water treatment box (1), and the guide rod (3101) is located at the lower side of the filter screen (2), a first scraper (3102) cooperating with the filter screen (2) is slidably connected to the guide rod (3101), and a push spring (3103) cooperating with the first scraper (3102) is arranged on the guide rod (3101); A force-bearing plate (3104) is fixedly provided at the bottom of the first scraper (3102) and is pushed by the upwardly rotating mesh plate (38); Two slide grooves (3105) are provided on the side surface of the mesh plate (38), and a slide seat (3106) is slidably connected in each of the two slide grooves (3105). The slide seat (3106) is connected to the inner top wall of the slide groove (3105) via an elastic rope (3107), and the elastic rope (3107) pulls the slide seat (3106) to move upward; A second scraper (3108) is fixedly connected to the outer sides of the surfaces of the two slide seats (3106) and is pushed by the force-bearing plate (3104) to scrape the mesh plate (38); After the second scraper (3108) moves down to the bottom, the area between the second scraper (3108) and the mesh plate (38) and the inner wall of the water treatment box (1) is set as a water-proof squeezing area (3109), and the outer wall of the water treatment box (1) is provided with a cleaning port (31010) connected to the water-proof squeezing area (3109), and a sealing plug (31011) is provided in the cleaning port (31010); The force-bearing plate (3104) is provided with an anti-blocking component (31012) that cooperates with the mesh plate (38).

3. The tail gas treatment and purification device for a new energy boiler according to claim 2 is characterized in that: The anti-blocking component (31012) includes a leather cup (310121) fixedly mounted on the surface of the force-bearing plate (3104) and corresponding to the mesh holes of the mesh plate (38), and a plurality of through holes (310122) are provided on the surface of the leather cup (310121), and a leather pad (310123) covering the through holes (310122) is provided on the outer surface of the leather cup (310121), and the leather pad (310123) is locally fixed to the leather cup (310121) at a single point along one side.

4. The tail gas treatment and purification device for a new energy boiler according to claim 1 is characterized in that: The water treatment box (1) is fixedly connected to a front-end treatment device via a pipeline, and an exhaust gas intake pipe is fixedly arranged on one side of the front-end treatment device.

5. The tail gas treatment and purification device for a new energy boiler according to claim 1 is characterized in that: The surface of the mesh plate (38) is provided with a plurality of embedding grooves, and the air injection pipe (39) is snap-fitted into the embedding grooves via a snap-fit ​​structure.

6. The tail gas treatment and purification device for a new energy boiler according to claim 5 is characterized in that: The air injection pipe (39) and the rotating shaft (31) are screwed together via a threaded structure.

7. The tail gas treatment and purification device for a new energy boiler according to claim 2 is characterized in that: A limiting block matching the first scraper (3102) is fixedly arranged on the guide rod (3101).

8. The tail gas treatment and purification device for a new energy boiler according to claim 2 is characterized in that: The force-bearing plate (3104) is provided with a plurality of anti-disturbance flow grooves.

9. The tail gas treatment and purification device for a new energy boiler according to claim 3 is characterized by: A connecting buckle is fixedly provided at the tail of the leather cup (310121), and the connecting buckle is fixedly connected to the force-bearing plate (3104) by means of bolts.

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