Self-cleaning chemical filter

Abstract

The invention relates to the technical field of waste gas purification, in particular to a self-cleaning chemical filter which comprises a tank body and a filter screen arranged in the tank body, a sleeve shell with an opening in the top is arranged in the tank body, an activated carbon filter element used for treating waste gas is arranged in the sleeve shell, and the self-cleaning chemical filter further comprises a transmission rod arranged in the center of the filter screen. The filter screen is of a conical structure, an inclined scraping plate attached to the surface of the filter screen is fixedly connected to the interior of the tank body, and a driving assembly for driving the filter screen to rotate is arranged on the outer surface of the transmission rod; the cleaning roller is rotationally connected to the interior of the sleeve shell, located on one side of the activated carbon filter element and used for cleaning impurities on the surface of the activated carbon filter element, and cleaning assemblies matched with the driving assemblies to drive the activated carbon filter element to rotate are arranged at the two ends of the activated carbon filter element; the cleaning roller is in contact with the activated carbon filter element, continuous cleaning of the activated carbon filter element in the rotating process is achieved through meshing of the transmission gear and the pinion, and impurities and blockages on the surface of the filter element are effectively removed.

Description

Technical Field

[0001] This invention relates to the field of waste gas purification technology, specifically a self-cleaning chemical filter. Background Technology

[0002] With rapid industrialization, exhaust gas emissions have become increasingly serious, posing a significant threat to the environment and human health. The research and application of exhaust gas treatment technologies have become crucial for solving this problem. Among these technologies, chemical filters, as efficient and reliable exhaust gas treatment equipment, play a vital role in removing harmful substances from exhaust gases. However, traditional chemical filters, due to prolonged contact with chemicals in exhaust gases, are prone to clogging and decreased filtration efficiency, requiring regular manual cleaning or replacement. This not only increases maintenance costs but may also disrupt the continuous operation of production lines. To address this issue, self-cleaning chemical filters have emerged. These filters combine advanced chemical filtration technology with an automated cleaning mechanism, enabling them to automatically remove contaminants during long-term operation and maintain stable filtration efficiency.

[0003] For example, patent document CN221752875U relates to the field of air filtration technology. Addressing the cumbersome and time-consuming process of replacing the adsorbent material in current pipeline chemical filters, this patent provides a pipeline chemical filter, including a tank. The tank has a filling port at the top and a cover plate at the top. An air inlet pipe connects to the side wall of the tank near the filling port, and an air outlet pipe connects to the bottom of the tank. Both the inlet and outlet pipes are equipped with on / off valves. Several packing layers are detachably installed inside the tank. Several maintenance ports for replacing the packing layers are opened on the side wall of the tank. The packing layers are slidably connected to the side wall of the tank. Each maintenance port corresponds to one packing layer and is equipped with a maintenance plate for opening and closing the port. This design simplifies the process of replacing the adsorbent material in the pipeline chemical filter, reduces replacement time, and thus reduces the time workers spend in contact with the adsorbent material that has adsorbed harmful substances, thus protecting workers.

[0004] While the aforementioned existing technologies cleverly incorporate design innovations such as packing layers, inspection ports, and inspection plates, effectively simplifying the replacement process of adsorbent materials in pipeline chemical filters and shortening the replacement time, their inherent limitations have gradually become apparent in industrial applications. The most significant problem is that replacing the adsorbent material still requires shutting down the entire system. This not only disrupts the continuity of waste gas treatment and reduces overall production efficiency but may also lead to environmental compliance risks due to emission fluctuations caused by treatment interruptions. More importantly, although the design provides a convenient maintenance method, the periodic inspection and maintenance of the adsorbent material remains manual, and achieving automated cleaning remains a major challenge. This manual maintenance method not only increases the economic cost of operation and maintenance but may also indirectly affect the filter's performance and lifespan due to the uncontrollability of maintenance cycles or differences in maintenance standards, limiting its long-term benefits. Therefore, this application proposes a self-cleaning chemical filter. Summary of the Invention

[0005] The purpose of this invention is to provide a self-cleaning chemical filter to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a self-cleaning chemical filter, comprising a tank and a filter screen disposed therein, wherein the tank has an opening at the top of a sleeve, and an activated carbon filter element for treating waste gas is disposed within the sleeve, and further comprising: A transmission rod is provided at the center of the filter screen, which is tapered, and an inclined scraper that fits the surface of the filter screen is fixedly connected inside the tank. A drive assembly for driving the filter screen to rotate is provided on the outer surface of the transmission rod. The cleaning roller is rotatably connected inside the housing and located on one side of the activated carbon filter element. It is used to clean impurities on the surface of the activated carbon filter element. The two ends of the activated carbon filter element are equipped with cleaning components that cooperate with the drive components to drive themselves to rotate. Gasket rods are evenly distributed at the bottom of the casing to control the flow path of the gas. The inside of the tank is equipped with a control component to control the movement of the gasket rods.

[0007] Preferably, the drive assembly includes a drive gear fixedly connected to the bottom of the transmission rod, a support frame fixedly connected to the top of the housing, and multiple extension rods rotatably connected to the top of the support frame. Planetary gears that mesh with the drive gear are fixedly connected to the outer surfaces of the multiple extension rods. Inner ring teeth that mesh with the multiple planetary gears are fixedly connected to the inside of the filter screen. Multiple fan blades are fixedly connected to the bottom of the multiple extension rods.

[0008] Preferably, the top of the transmission rod is rotatably connected to the inside of the tank, and a wind turbine is fixedly connected to the top of the transmission rod; an auxiliary ring that is slidably connected to the bottom of the filter screen is fixedly connected to the bottom of the tank.

[0009] Preferably, the cleaning assembly includes transmission gears fixedly connected to both ends of the activated carbon filter element, and small gears meshing with the transmission gears are fixedly connected to both ends of the cleaning roller. The inside of the tank is provided with a storage chamber for storing cleaning liquid. A drain plate for closing the storage chamber is rotatably connected to one side of the storage chamber, and a trigger plate that can abut against the cleaning roller is fixedly connected to the other end of the drain plate. A torsion spring is provided on the common connecting shaft between the trigger plate and the drain plate for resetting.

[0010] Preferably, the interior of the tank has multiple air chambers that are interconnected. One end of each air chamber is slidably connected to a driven piston spring rod that is adapted to it, and one end of the driven piston spring rod is rotatably connected to a roller. Both ends of the activated carbon filter element are fixedly connected to a ring frame, and the interior of the ring frame has multiple inclined grooves for the rollers to slide through.

[0011] Preferably, the other end of each of the multiple air chambers is slidably connected to an active piston spring rod adapted thereto, and the top of each of the multiple active piston spring rods is rotatably connected to a ball, and the bottom of the auxiliary ring is uniformly fixedly connected to multiple arc plates, and the multiple balls abut against the bottom surface of the multiple arc plates.

[0012] Preferably, both ends of the activated carbon filter element extend into the interior of the tank for gas discharge, and the filter surface of the activated carbon filter element is adapted to the opening of the housing.

[0013] Preferably, the control component includes a pull handle fixedly connected to the bottom of the housing, and the bottom of the pull handle is rotatably connected to a crank whose end is rotatably connected to the bottom of the pad rod, and the other end of the crank is rotatably connected to an abutment plate.

[0014] Preferably, the outer surface of the tank is provided with an annular gas shell fixed by bolts, and the annular gas shell is connected to the interior of the activated carbon filter element. The bottom of the annular gas shell is connected to multiple gas supply pipes, and the bottom of the multiple gas supply pipes extends into the interior of the tank and is located below the shell. One end of the gas supply pipe is rotatably connected to a hinge piece that can abut against one end of the abutment piece.

[0015] Preferably, the top of the tank is bolted to an exhaust gas inlet pipe for the waste gas to enter, and the bottom of the tank is bolted to an exhaust pipe for the treated waste gas to exit.

[0016] Compared with the prior art, the beneficial effects of the present invention are: As a physical filtration layer, the filter screen effectively intercepts large particulate impurities in the air, such as dust. The activated carbon filter, acting as a chemical filtration layer, adsorbs harmful chemicals in the air, such as VOCs (volatile organic compounds) and ozone, providing comprehensive air purification. The activated carbon filter is housed in a housing and can rotate, constantly changing the surface in contact with the exhaust gas. This helps to evenly utilize the filter's adsorption capacity, effectively extending its service life. Continuous high-efficiency filtration: The filter screen is designed in a conical shape, increasing the filtration area and allowing for more thorough contact between the exhaust gas and the filter. An inclined scraper adheres to the filter screen surface, achieving automatic cleaning through the screen's rotation, maintaining its high-efficiency filtration capacity. The turbine uses the power from the exhaust gas to drive the transmission rod, which, through a transmission system of drive gears, planetary gears, and internal ring gears, achieves the slow and smooth rotation of the filter screen. This design requires no external power source, making it energy-efficient and environmentally friendly. The conical filter design allows the removed impurities to fall off naturally due to gravity, reducing the need for manual cleaning and promoting airflow. When the planetary gears rotate, they drive the extension rod and fan blades to rotate, creating airflow. This helps to evenly distribute the exhaust gas within the tank and achieve more efficient filtration. The airflow circulation not only helps to evenly distribute the exhaust gas but also accelerates the contact between the activated carbon filter and the exhaust gas, improving the efficiency of chemical adsorption.

[0017] The cleaning roller contacts the activated carbon filter element, and through the meshing of the transmission gear and pinion, continuous cleaning of the activated carbon filter element is achieved during its rotation, effectively removing impurities and blockages from the filter element surface. Regular cleaning of the activated carbon filter element can maintain its adsorption capacity, extend its service life, reduce replacement frequency, and lower maintenance costs. The cleaning fluid stored in the liquid storage chamber drives the trigger plate to contact the cleaning roller through the force of a torsion spring, wetting the cleaning roller and thus enhancing its cleaning effect on the activated carbon filter element. The rotation of the cleaning roller not only cleans the activated carbon filter element but also drives the trigger plate to move, achieving staggered drainage between the drain plate and the liquid storage chamber without manual intervention, improving the degree of automation. Energy-saving and efficient: The rotation of the filter screen drives the auxiliary ring to rotate, which in turn drives the arc plate to move. Utilizing the mechanical linkage principle, the active piston spring rod and the driven piston spring rod slide within the gas chamber, realizing the compression and transportation of gas without the need for an external power source. When the gas in the air chamber is compressed, it pushes the driven piston spring rod to move, which in turn drives the roller to slide in the inclined groove, causing the ring frame and activated carbon filter element to rotate slowly, thus achieving uniform cleaning of the filter element surface.

[0018] The gasket rod allows the control assembly to open or close the channel at the bottom of the housing as needed, thus precisely controlling the gas flow path. This ensures that the gas filtered by the activated carbon filter can be efficiently discharged through the gas delivery pipe, while allowing some gas to enter the housing for drying. Precise control of the gas flow path avoids the direct discharge of unfiltered gas, thereby improving the overall filtration efficiency of the filter and extending its service life. The control assembly, through the linkage of hinges, contact plates, cranks, and gasket rods, enables some gas to enter the housing and blow onto the surface of the activated carbon filter while it is being discharged. This helps to dry any residual moisture or cleaning fluid on the filter surface, preventing the filter from becoming damp or clogged, thus extending its service life. The drying operation not only helps remove impurities from the filter surface but also accelerates the evaporation of cleaning fluid, allowing the filter surface to return to a dry state more quickly, thereby improving cleaning efficiency. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the first cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the second cross-sectional structure of the present invention; Figure 4 This is a schematic cross-sectional view of a portion of the filter screen in this invention; Figure 5 This is a schematic cross-sectional view of the filter screen in this invention; Figure 6 This is a schematic cross-sectional view of the casing in this invention; Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point A in the middle; Figure 8 This is a schematic cross-sectional view of the air cavity in this invention; Figure 9 This is a schematic diagram of the structure in this invention where the tank body is removed; Figure 10 This is a schematic diagram of the activated carbon filter element in this invention; Figure 11 For the present invention Figure 10 Enlarged schematic diagram of the structure at point B; Figure 12 This is a schematic cross-sectional view of the annular shell in this invention; Figure 13 This is a schematic diagram of the crank mechanism in this invention.

[0020] In the diagram: 100, Tank body; 101, Filter screen; 102, Outer shell; 103, Activated carbon filter element; 104, Exhaust gas inlet pipe; 105, Exhaust pipe; 106, Annular shell; 107, Gas transmission pipe; 200, Transmission rod; 201, Sloping scraper; 202, Wind turbine; 203, Drive gear; 204, Support frame; 205, Planetary gear; 206, Inner ring gear; 207, Fan blade; 208, Auxiliary ring; 209, Extension rod; 30 0. Cleaning roller; 301. Pinion; 302. Transmission gear; 303. Trigger plate; 304. Liquid storage chamber; 305. Drain plate; 306. Arc plate; 307. Air chamber; 308. Active piston spring rod; 309. Ball bearing; 310. Driven piston spring rod; 311. Roller; 312. Ring frame; 313. Inclined groove; 400. Shim rod; 401. Hinge; 402. Crank; 403. Pull handle; 404. Contact plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figure 1 , Figure 2 as well as Figure 3 This invention provides a technical solution: a self-cleaning chemical filter, comprising a tank 100 and a filter screen 101 disposed therein, wherein the tank 100 has a shell 102 with an opening at the top, and an activated carbon filter element 103 for treating waste gas is disposed inside the shell 102. Both ends of the activated carbon filter element 103 extend into the interior of the tank 100 for gas discharge, and the filter surface of the activated carbon filter element 103 is adapted to the opening of the shell 102. The top of the tank 100 is bolted to a waste gas inlet for waste gas to enter. Pipe 104 and tank 100 are connected by bolts to exhaust pipe 105 for discharging treated waste gas. Filter screen 101 is a physical filtration layer that can intercept particulate matter in the air, such as dust, while activated carbon filter element 103 is a chemical filtration layer that adsorbs harmful chemicals in the air, such as VOCs and ozone. Activated carbon filter element 103 is placed inside housing 102 and can rotate to continuously change the surface in contact with waste gas, thereby effectively extending the service life of activated carbon filter element 103 and ensuring continuous filtration efficiency.

[0023] Please see Figure 3 , Figure 4 as well as Figure 5It also includes a transmission rod 200, which is located at the center of the filter screen 101. The filter screen 101 is tapered, and an inclined scraper 201 that adheres to the surface of the filter screen 101 is fixedly connected inside the tank 100. A drive assembly for driving the filter screen 101 to rotate is provided on the outer surface of the transmission rod 200. The tapered shape of the filter screen 101 can increase its filtration area, allowing the exhaust gas to come into more full contact with the filter screen 101. The inclined scraper 201 adheres to the surface of the filter screen 101 to clean it, removing the impurities intercepted on the surface of the filter screen 101. The drive assembly can slowly drive the filter screen 101 to rotate and be misaligned with the inclined scraper 201 to achieve a cleaning effect.

[0024] Furthermore, the drive assembly includes a drive gear 203 fixedly connected to the bottom of the transmission rod 200, a support frame 204 fixedly connected to the top of the housing 102, and multiple extension rods 209 rotatably connected to the top of the support frame 204. Planetary gears 205 that mesh with the drive gear 203 are fixedly connected to the outer surfaces of the multiple extension rods 209. Inner ring gears 206 that mesh with the multiple planetary gears 205 are fixedly connected to the inside of the filter screen 101. Multiple fan blades 207 are fixedly connected to the bottom of the multiple extension rods 209. The cooperation between the drive gear 203, the multiple planetary gears 205, and the inner ring gears 206 achieves deceleration, thereby enabling the filter screen 101 to rotate slowly and smoothly.

[0025] The top of the transmission rod 200 is rotatably connected to the inside of the tank 100, and a wind turbine 202 is fixedly connected to the top of the transmission rod 200. An auxiliary ring 208 that is slidably connected to the bottom of the filter screen 101 is fixedly connected to the bottom of the filter screen 101. The wind turbine 202 is configured to drive the transmission rod 200 to rotate when the exhaust gas is discharged, so that the filter screen 101 rotates, thereby causing the inclined scraper 201 to be misaligned with the filter screen 101 for cleaning, thus maintaining the filter screen 101 at a high filtration efficiency.

[0026] Specifically, when the exhaust gas first passes through the filter screen 101, large particulate impurities are filtered out. At the same time, when the exhaust gas enters the tank 100, it cooperates with multiple wind turbines 202 to drive the transmission rod 200 to rotate. The transmission rod 200 drives the drive gear 203 to drive multiple planetary gears 205 to rotate, which in turn drives the inner ring gear 206 to rotate, thus driving the filter screen 101 to rotate slowly. This causes the inclined scraper 201 to interlace with the surface of the filter screen 101 to achieve cleaning. The filter screen 101 is conical, which allows the scraped impurities to detach from the filter screen 101 by gravity. At the same time, when the planetary gears 205 rotate, they drive the extension rod 209 to rotate, which drives the fan blades 207 to rotate, thereby creating airflow.

[0027] In summary, filter 101, as a physical filtration layer, effectively intercepts large particulate impurities in the air, such as dust. Activated carbon filter 103, as a chemical filtration layer, adsorbs harmful chemicals in the air, such as VOCs (volatile organic compounds) and ozone, providing comprehensive air purification. The activated carbon filter 103, housed within housing 102, is rotatable, constantly changing the surface in contact with exhaust gas. This helps to evenly utilize the filter's adsorption capacity, effectively extending its service life. Continuous high-efficiency filtration: The tapered design of filter 101 increases the filtration area, allowing for more thorough contact between exhaust gas and the filter. The inclined scraper 201 adheres to the filter surface, achieving automatic cleaning through the rotation of filter 101, maintaining its high-efficiency filtration capacity. The turbine 202 uses the power from the exhaust gas to drive the transmission rod 200, which in turn, through a transmission system of drive gear 203, planetary gear 205, and inner ring gear 206, achieves the slow and smooth rotation of filter 101. This design requires no external power source, is energy-saving and environmentally friendly. The conical filter 101 allows the removed impurities to fall off naturally due to gravity, reducing the need for manual cleaning and promoting airflow. When the planetary gear 205 rotates, it drives the extension rod 209 and the fan blade 207 to rotate, forming an airflow. This helps the exhaust gas to be evenly distributed in the tank 100 and to be filtered more efficiently. The circulation of airflow not only helps the exhaust gas to be evenly distributed, but also accelerates the contact between the activated carbon filter element 103 and the exhaust gas, improving the efficiency of chemical adsorption.

[0028] Example 2: Please refer to Figure 6 , Figure 7 as well as Figure 9 The present invention also provides a technical solution, which differs from the technical solution of Embodiment 1 as follows: a self-cleaning chemical filter, further comprising a cleaning roller 300, which is rotatably connected to the inside of the housing 102 and located on one side of the activated carbon filter element 103. It is used to clean impurities on the surface of the activated carbon filter element 103. The two ends of the activated carbon filter element 103 are provided with cleaning components that cooperate with the driving components to drive themselves to rotate. By setting the cleaning roller 300 to come into contact with the activated carbon filter element 103, cleaning is achieved. The cleaning components can drive the cleaning roller 300 to rotate to achieve cleaning of the activated carbon filter element 103.

[0029] Furthermore, the cleaning assembly includes transmission gears 302 fixedly connected to both ends of the activated carbon filter element 103, and pinions 301 meshing with transmission gears 302 fixedly connected to both ends of the cleaning roller 300. The tank 100 has a storage chamber 304 for storing cleaning liquid inside. A drain plate 305 for sealing the storage chamber 304 is rotatably connected to one side of the storage chamber 304, and a trigger plate 303 that can abut against the cleaning roller 300 is fixedly connected to the other end of the drain plate 305. A torsion spring is provided on the common connecting shaft between the trigger plate 303 and the drain plate 305 for resetting. By setting the storage chamber 304, the torsion spring can cause the trigger plate 303 and the cleaning roller 300 to be discharged under the action of the cleaning liquid, thereby wetting the cleaning roller 300 and improving the cleaning efficiency of the cleaning roller 300 on the activated carbon filter element 103.

[0030] Please refer to Figure 8 , Figure 10 as well as Figure 11 The tank 100 has multiple air chambers 307 inside, and these air chambers 307 are interconnected. One end of each air chamber 307 is slidably connected to a driven piston spring rod 310, and one end of the driven piston spring rod 310 is rotatably connected to a roller 311. Both ends of the activated carbon filter element 103 are fixedly connected to a ring frame 312, and the ring frame 312 has multiple inclined grooves 313 inside for the rollers 311 to slide through. When the gas inside the air chamber 307 is compressed, it will drive the driven piston spring rod 310 to move, thereby driving the rollers 311 to slide inside the inclined grooves 313. At this time, the ring frame 312 will be driven to rotate, thereby driving the activated carbon filter element 103 to rotate, thus changing the position of the activated carbon filter element 103 above the housing 102. At the same time, the cleaning roller 300 is driven to rotate to clean the activated carbon filter element 103.

[0031] Furthermore, each of the multiple air chambers 307 has a slidingly connected active piston spring rod 308 at its other end, and each of the multiple active piston spring rods 308 has a rotatably connected ball bearings 309 at its top. The bottom of the auxiliary ring 208 is uniformly fixedly connected to multiple arc plates 306, and each of the multiple ball bearings 309 abuts against the bottom surface of the multiple arc plates 306. The slow rotation of the housing 102 will drive the auxiliary ring 208 to rotate, thereby driving the multiple arc plates 306 to move. This causes the arc plates 306 to continuously push the ball bearings 309 downward, so that the piston end of the active piston spring rod 308 slides inside the air chamber 307, thereby driving the gas delivery.

[0032] Specifically, the exhaust gas passes through the casing 102 and is filtered by the activated carbon filter element 103 before entering the interior of the annular casing 106. Simultaneously, when the filter screen 101 rotates, it drives the auxiliary ring 208 to rotate, which in turn drives the arc plate 306 to rotate. This, in turn, drives the ball bearing 309 to slide along the bottom surface of the arc plate 306, thereby driving the piston end of the active piston spring rod 308 to move inside the gas chamber 307. This pushes the gas in the gas chamber 307 to the other end, driving the piston end of the driven piston spring rod 310 to move, which in turn drives the roller 311 to slide inside the inclined groove 313. The drive ring 312 rotates, which in turn drives the activated carbon filter element 103 to rotate slowly. This changes the surface of the activated carbon filter element 103 on the top surface of the housing 102, causing the transmission gear 302 to drive the pinion 301 to rotate, which in turn drives the cleaning roller 300 to rotate. The surface of the used activated carbon filter element 103 will be cleaned by the cleaning roller 300. At the same time, the rotation of the cleaning roller 300 continuously drives the trigger plate 303 to move, which in turn drives the drain plate 305 to be misaligned with the liquid storage chamber 304, thereby realizing the drainage. The cleaning roller 300 is then moistened, thus wetting the surface of the activated carbon filter element 103 and improving the cleaning efficiency.

[0033] In summary, the cleaning roller 300 contacts the activated carbon filter element 103, and through the meshing of the transmission gear 302 and the pinion 301, continuous cleaning of the activated carbon filter element 103 is achieved during rotation, effectively removing impurities and blockages from the filter element surface. Regular cleaning of the activated carbon filter element 103 can maintain its adsorption capacity, extend its service life, reduce replacement frequency, and lower maintenance costs. The cleaning fluid stored in the liquid storage chamber 304 drives the trigger plate 303 to contact the cleaning roller 300 through the force of the torsion spring, wetting the cleaning roller 300 and thus enhancing its cleaning effect on the activated carbon filter element 103. The rotation of the cleaning roller 300 not only cleans the activated carbon filter element 103, but also drives the trigger plate 303 to move, achieving staggered drainage between the drain plate 305 and the liquid storage chamber 304, eliminating the need for manual intervention and improving the degree of automation. Energy-efficient and high-performance: The rotation of the filter screen 101 drives the auxiliary ring 208 to rotate, which in turn moves the arc plate 306. Utilizing the principle of mechanical linkage, the active piston spring rod 308 and the driven piston spring rod 310 slide within the air chamber 307, achieving gas compression and delivery without the need for an external power source. When the gas in the air chamber 307 is compressed, it pushes the driven piston spring rod 310 to move, which in turn drives the roller 311 to slide within the inclined groove 313, causing the ring frame 312 and the activated carbon filter element 103 to rotate slowly, achieving uniform cleaning of the filter element surface.

[0034] Example 3: Please refer to Figure 6 , Figure 12 as well as Figure 13The present invention also provides a technical solution, which differs from the technical solution of Embodiment 1 as follows: a self-cleaning chemical filter, further comprising a gasket rod 400, which is uniformly disposed at the bottom of the housing 102 for controlling the flow path of gas. The outer surface of the tank 100 is provided with an annular gas shell 106 fixed by bolts, and the annular gas shell 106 is connected to the interior of the activated carbon filter element 103. The bottom of the annular gas shell 106 is connected to multiple gas delivery pipes 107, and the bottom of the multiple gas delivery pipes 107 extends into the interior of the tank 100 and is located below the housing 102. The interior of the tank 100 is provided with a control component for controlling the movement of the gasket rod 400. By setting the gasket rod 400, the gas delivery path can be controlled, so that the control component drives the gasket rod 400 to move and open the channel at the bottom of the housing 102, thereby allowing the gas filtered by the activated carbon filter element 103 to be discharged through the gas delivery pipe 107, while some gas enters the interior of the housing 102 through the bottom of the housing 102 to dry the housing 102.

[0035] Furthermore, the control component includes a handle 403 fixedly connected to the bottom of the housing 102, and a crank 402 rotatably connected at one end to the bottom of the gasket rod 400. The other end of the crank 402 is rotatably connected to an abutment plate 404, and one end of the gas supply pipe 107 is rotatably connected to a hinge plate 401 that can abut against one end of the abutment plate 404. The gas supply to the activated carbon filter 103 will push the hinge plate 401 to open in a misaligned manner, thereby guiding the gas downward to be discharged through the exhaust pipe 105. At the same time, the hinge plate 401 pushes one end of the abutment plate 404 to move, thereby driving the crank 402 to rotate, which in turn pushes the gasket rod 400 to move upward, so that a small part of the gas enters the interior of the housing 102 and blows towards the activated carbon filter 103. Meanwhile, the purified gas enters the activated carbon filter 103 and is discharged again through the annular shell 106.

[0036] Specifically, when the treated exhaust gas is discharged through the gas pipe 107, it will push the hinge 401 to rotate, thereby driving one end of the contact plate 404 to move, which in turn pulls one end of the crank 402 to move down, thereby pushing the gasket rod 400 to move up, which in turn drives the channel at the bottom of the housing 102, so that some of the treated gas enters the interior of the housing 102 and is blown to the surface of the activated carbon filter element 103, drying the wetted surface and further improving the cleaning efficiency.

[0037] In summary, the gasket rod 400 allows the control assembly to open or close the channel at the bottom of the housing 102 as needed, thereby precisely controlling the gas flow path. This ensures that the gas filtered by the activated carbon filter element 103 can be efficiently discharged through the gas delivery pipe 107, while allowing some gas to enter the housing 102 for drying. By precisely controlling the gas flow path, the direct discharge of gas without sufficient filtration is avoided, thus improving the overall filtration efficiency of the filter and extending its service life. The control assembly, through the linkage of the hinge 401, the contact plate 404, the crank 402, and the gasket rod 400, enables some gas to enter the housing 102 and blow onto the surface of the activated carbon filter element 103 while the gas is being discharged. This helps to dry any residual moisture or cleaning fluid on the filter element surface, preventing the filter element from becoming damp or clogged, thereby extending its service life. The drying operation not only helps remove impurities from the filter element surface but also accelerates the evaporation of the cleaning fluid, allowing the filter element surface to return to a dry state more quickly, thus improving cleaning efficiency.

[0038] Working principle: When in use, the waste gas to be treated is first poured into the inside of the waste gas inlet pipe 104, so that the waste gas enters the inside of the tank 100. The waste gas will first pass through the shell 102 and then through the activated carbon filter element 103 into the inside of the annular shell 106. Then it will be discharged through multiple gas delivery pipes 107 and then through the exhaust pipe 105. When the exhaust gas first passes through the filter screen 101, large particles of impurities are filtered out. At the same time, when the exhaust gas enters the tank 100, it will cooperate with multiple wind turbines 202 to drive the transmission rod 200 to rotate. The transmission rod 200 drives the drive gear 203 to drive multiple planetary gears 205 to rotate, which in turn drives the inner ring gear 206 to rotate, thus driving the filter screen 101 to rotate slowly. This causes the inclined scraper 201 to interlace with the surface of the filter screen 101 to achieve cleaning. The filter screen 101 is conical, which allows the removed impurities to be removed by gravity and detach from the filter screen 101. At the same time, when the planetary gears 205 rotate, they drive the extension rod 209 to rotate, which drives the fan blades 207 to rotate and form airflow, thereby driving the airflow. The activated carbon filter element 103 is placed inside the housing 102, allowing the exhaust gas to pass through the housing 102 and be filtered by the activated carbon filter element 103 before entering the annular housing 106. Simultaneously, when the filter screen 101 rotates, it drives the auxiliary ring 208 to rotate, which in turn drives the arc plate 306 to rotate. This, in turn, drives the ball bearing 309 to slide along the bottom surface of the arc plate 306, thereby driving the piston end of the active piston spring rod 308 to move inside the gas chamber 307. This pushes the gas in the gas chamber 307 to the other end, driving the piston end of the driven piston spring rod 310 to move, which in turn drives the roller 311 in the inclined groove 3. The internal sliding of 13 drives the ring frame 312 to rotate, which in turn drives the activated carbon filter element 103 to rotate slowly. This changes the surface of the activated carbon filter element 103 on the top surface of the housing 102, causing the transmission gear 302 to drive the pinion 301 to rotate, which in turn drives the cleaning roller 300 to rotate. The surface of the used activated carbon filter element 103 will be cleaned by the cleaning roller 300. At the same time, the rotation of the cleaning roller 300 continuously drives the trigger plate 303 to move, which drives the drain plate 305 to be misaligned with the liquid storage chamber 304, thereby realizing the drainage. The cleaning roller 300 is moistened, which moistens the surface of the activated carbon filter element 103 and improves the cleaning efficiency. When the treated exhaust gas is discharged through the gas pipe 107, it will push the hinge 401 to rotate, thereby driving one end of the contact plate 404 to move, which in turn pulls one end of the crank 402 to move down, thereby pushing the gasket rod 400 to move up, which in turn drives the channel at the bottom of the housing 102, so that some of the treated gas enters the interior of the housing 102 and is blown to the surface of the activated carbon filter element 103, drying the wetted surface and further improving the cleaning efficiency.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning chemical filter, comprising a tank body (100) and a filter screen (101) arranged inside the tank body (100), wherein a casing (102) having an opening at the top is provided inside the tank body (100), and an activated carbon filter element (103) for treating exhaust gas is provided inside the casing (102), characterized in that: Also includes: A transmission rod (200) is arranged at the center of the filter screen (101); the filter screen (101) is of a conical structure; an inclined scraper (201) that fits the surface of the filter screen (101) is fixedly connected to the inside of the tank body (100); and a driving component that drives the filter screen (101) to rotate is arranged on the outer surface of the transmission rod (200); A cleaning roller (300) is rotatably connected to the interior of the casing (102) and is located on one side of the activated carbon filter element (103), and is used to clean impurities on the surface of the activated carbon filter element (103). Both ends of the activated carbon filter element (103) are provided with cleaning components that cooperate with the driving components to drive the activation carbon filter element to rotate. The gasket rods (400) are evenly arranged at the bottom of the casing (102) and are used to control the flow path of the gas. A control component for controlling the movement of the gasket rods (400) is arranged inside the tank body (100).

2. A self-cleaning chemical filter according to claim 1, characterized in that: The driving assembly comprises a driving gear (203) fixedly connected to the bottom of the transmission rod (200); the top of the casing (102) is fixedly connected to a support frame (204); the top of the support frame (204) is rotatably connected to a plurality of extension rods (209); the outer surfaces of the plurality of extension rods (209) are fixedly connected to planetary gears (205) meshing with the driving gear (203); the interior of the filter screen (101) is fixedly connected to an inner ring gear (206) meshing with the plurality of planetary gears (205); and the bottoms of the plurality of extension rods (209) are fixedly connected to a plurality of fan blades (207).

3. A self-cleaning chemical filter according to claim 2, characterized in that: The top of the transmission rod (200) is rotatably connected to the inside of the tank body (100), and the top of the transmission rod (200) is fixedly connected to a wind turbine (202), and the bottom of the filter screen (101) is fixedly connected to an auxiliary ring (208) that is slidably connected to the tank body (100).

4. A self-cleaning chemical filter according to claim 3, characterized in that: The cleaning assembly comprises a transmission gear (302) fixedly connected to both ends of the activated carbon filter element (103); both ends of the cleaning roller (300) are fixedly connected to a pinion gear (301) meshing with the transmission gear (302); a liquid storage chamber (304) for storing cleaning liquid is provided inside the tank body (100); a liquid discharge plate (305) for closing the liquid storage chamber (304) is rotatably connected to one side of the liquid storage chamber (304); a trigger plate (303) capable of contacting the cleaning roller (300) is fixedly connected to the other end of the liquid discharge plate (305); and a torsion spring is provided on a common connecting shaft between the trigger plate (303) and the liquid discharge plate (305) for resetting the trigger plate (303).

5. A self-cleaning chemical filter according to claim 3, characterized in that: The tank body (100) is provided with a plurality of air cavities (307) inside, and the plurality of air cavities (307) are interconnected, one end of each of the plurality of air cavities (307) is slidably connected to a driven piston spring rod (310) adapted thereto, and one end of the driven piston spring rod (310) is rotatably connected to a roller (311), both ends of the activated carbon filter element (103) are fixedly connected to a ring frame (312), and the ring frame (312) is provided with a plurality of inclined grooves (313) inside for the roller (311) to be slidably connected thereto.

6. A self-cleaning chemical filter according to claim 5, characterized in that: The other ends of the plurality of air cavities (307) are slidably connected to active piston spring rods (308) adapted thereto, and the tops of the plurality of active piston spring rods (308) are rotatably connected to balls (309), and the bottom of the auxiliary ring (208) is evenly fixedly connected to a plurality of arc plates (306), and the plurality of balls (309) are in contact with the bottom surfaces of the plurality of arc plates (306).

7. A self-cleaning chemical filter according to claim 1, characterized in that: Both ends of the activated carbon filter element (103) extend to the interior of the tank body (100) for gas discharge, and the filter surface of the activated carbon filter element (103) is adapted to the opening of the casing (102).

8. A self-cleaning chemical filter according to claim 1, characterized in that: The control assembly comprises a pull handle (403) fixedly connected to the bottom of the casing (102), the bottom of the pull handle (403) being rotatably connected to a crank (402) having one end rotatably connected to the bottom of the gasket rod (400), and the other end of the crank (402) being rotatably connected to a resisting piece (404).

9. A self-cleaning chemical filter according to claim 8, characterized in that: The outer surface of the tank body (100) is provided with an annular gas shell (106) fixed by bolts, and the annular gas shell (106) is connected to the inside of the activated carbon filter element (103), and the bottom of the annular gas shell (106) is connected to a plurality of gas pipes (107), and the bottoms of the plurality of gas pipes (107) all extend to the inside of the tank body (100) and are located below the casing (102), and one end of the gas pipe (107) is rotatably connected to a hinge piece (401) that can abut against one end of the abutment piece (404).

10. A self-cleaning chemical filter according to claim 1, characterized in that: The top of the tank body (100) is connected to an exhaust gas inlet pipe (104) through bolts for exhaust gas to enter, and the bottom of the tank body (100) is connected to an exhaust pipe (105) through bolts for exhausting treated exhaust gas.

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