A gas filtration device

Abstract

This utility model relates to the field of gas filtration technology and discloses a gas filtration device, including a smoke outlet pipe. Two fixing blocks are fixedly connected to the lower middle part of the inner side of the smoke outlet pipe on both the left and right sides. A filter mechanism is provided at the top of the inner side of the smoke outlet pipe for filtering impurities inside the smoke. A flow guiding mechanism is provided at the bottom of each of the two fixing blocks to guide the flow path of the smoke. A soot blowing mechanism is provided at the bottom of the rear end of the inner side of the smoke outlet pipe, and a soot scraping mechanism is provided on the left side of the middle part of the inner side of the smoke outlet pipe. In this utility model, a three-stage filtration system is formed by inserting a coarse filter, a fine filter, and an activated carbon filter along a placement groove. A pin, in conjunction with a rubber ring, is inserted into a round hole to lock the filter. Pulling the assembly allows for easy disassembly and maintenance of the filter. This achieves elastic locking to ensure the filter's stability, and sliding cooperation facilitates disassembly and assembly, improving the efficiency of installation and disassembly.

Description

Technical Field

[0001] This utility model relates to the field of gas filtration technology, and in particular to a gas filtration device. Background Technology

[0002] A gas filtration device is a device used to remove impurities from gas to ensure the clean and safe operation of gas transmission equipment. It has important applications in many stages of gas production, transmission, storage and use. It can effectively prevent impurities from clogging pipelines and damaging gas equipment, and reduce safety hazards caused by impurities.

[0003] In existing technologies, mesh filters use metal mesh as their filter element, which has a relatively large pore size and can only trap larger particles of impurities, failing to filter out fine particles. For applications requiring high gas purity, mesh filters are insufficient and must be used in conjunction with high-precision filters. If the gas contains many fine impurities, it can cause wear or blockage in downstream equipment, affecting the stability of the system. Existing technologies achieve gradient filtration by layering metal meshes with different pore sizes, improving the trapping capacity for fine particles. A layer of polypropylene or glass fiber is placed inside the metal mesh to capture fine particles through adsorption. However, in practical use, forceful pulling during disassembly can cause filter element breakage or fiber layer detachment, especially with sintered metal filter elements, leading to reduced installation and disassembly efficiency. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a gas filtration device that solves the technical problem that if the filter element is broken or the fiber layer is detached when it is violently pulled during disassembly, especially for sintered metal filter elements, resulting in reduced installation and disassembly efficiency.

[0005] According to one aspect, at least one embodiment of the present invention provides a gas filtration device, comprising: a smoke outlet pipe, wherein two fixing blocks are fixedly connected to the lower middle part of the inner side of the smoke outlet pipe on both the left and right sides; a filter mechanism is provided at the top of the inner side of the smoke outlet pipe for filtering impurities inside the smoke; a flow guiding mechanism is provided at the bottom of the two fixing blocks for guiding the flow path of the smoke; a soot blowing mechanism is provided at the bottom of the rear end of the inner side of the smoke outlet pipe; and a soot scraping mechanism is provided on the left side of the middle part of the inner side of the smoke outlet pipe. The filtration mechanism includes an activated carbon filter screen. The outer wall of the activated carbon filter screen is slidably connected to the top inner side of the smoke outlet pipe. Multiple placement slots are provided on the top inner side of the smoke outlet pipe. The outer side of the activated carbon filter screen is slidably connected to the inside of the top placement slot. A fine filter screen is slidably connected to the inside of the middle placement slot. A coarse filter screen is slidably connected to the inside of the bottom placement slot. A circular hole is provided on the front top of the smoke outlet pipe. A pin is slidably connected to the inside of the circular hole. Multiple rubber rings are fixedly connected to the top outer wall of the pin. A pulling component is provided on the top of the rubber rings.

[0006] According to another aspect, at least one embodiment of the present invention also provides a gas filtration device, comprising: the flow guiding mechanism including a plurality of fixed blocks 2, the plurality of fixed blocks 2 being respectively fixedly connected to the lower middle part of the left and right sides inside the smoke outlet pipe on opposite sides, a rotating plate being rotatably connected between adjacent fixed blocks 2, a slide rail being fixedly connected to the top inner side of two rotating plates, a slider being slidably connected to the top of the slide rail, a rotating seat being fixedly connected to the bottom of two fixed blocks 1 and the top of the slider, and a telescopic rod 1 being fixedly connected between adjacent rotating seats.

[0007] According to another aspect, at least one embodiment of the present invention also provides a gas filtration device, comprising: the pull assembly including a fixing strip, the bottom of the fixing strip being fixedly connected to the top of the pin, and a pull ring being fixedly connected to the top of the fixing strip.

[0008] According to another aspect, at least one embodiment of the present invention also provides a gas filtration device, comprising: the pulling assembly further comprising a plurality of connecting rods, the rear sides of the plurality of connecting rods being respectively fixedly connected to the front sides of an activated carbon filter, a fine filter and a coarse filter, and a circular plate being fixedly connected to the front sides of the plurality of connecting rods.

[0009] According to another aspect, at least one embodiment of the present invention also provides a gas filtration device, comprising: the soot blowing mechanism including two fans, the two fans being externally fixedly connected to the bottom rear end of the inside of the smoke outlet pipe, the bottom rear end of the inside of the smoke outlet pipe having two air inlets, the outer walls of the two fans being fixedly connected to the inside of the two air inlets, the bottom rear end of the inside of the smoke outlet pipe having two support plates fixedly connected, the tops of the two support plates being fixedly connected to telescopic rods, and the tops of the two telescopic rods being fixedly connected to baffles.

[0010] According to another aspect, at least one embodiment of the present invention also provides a gas filtration device, comprising: the ash scraping mechanism including a telescopic rod three, the left side of the telescopic rod three being fixedly connected to the left end of the inner middle of the smoke outlet pipe, a scraper being slidably connected to the right side of the outer wall of the telescopic rod three, an installation component being provided on the right side of the scraper, and sliding components being provided on both the front and rear sides of the scraper.

[0011] According to another aspect, at least one embodiment of the present invention also provides a gas filtration device, comprising: the mounting assembly includes a mounting plate, the left side of the mounting plate is fixedly connected to the right side of the telescopic rod three, the right side of the mounting plate is threaded with a plurality of screws, and the outer left side of the middle screw is threadedly connected to the right side of the telescopic rod three.

[0012] According to another aspect, at least one embodiment of the present invention also provides a gas filtration device, comprising: the sliding component includes a limiting plate, a plurality of the limiting plates being fixedly connected to the front and rear sides of a scraper respectively, the front and rear sides of the scraper are provided with semi-circular grooves, the plurality of the limiting plates being fixedly connected to the interior of two semi-circular grooves, and the plurality of the limiting plates being rotatably connected to the adjacent sides with rotating beads.

[0013] According to another aspect, at least one embodiment of the present invention also provides a gas filtration device, comprising: an exhaust pipe provided at the top of the exhaust pipe, and a fan II fixedly connected to the top of the exhaust pipe.

[0014] According to another aspect, at least one embodiment of the present invention also provides a gas filtration device, comprising: two mounting blocks fixedly connected to the left and right sides of the gas outlet pipe, bolts penetrating the tops of the mounting blocks, and the outer surfaces of the bolts being threadedly connected to the top of the smoke outlet pipe.

[0015] The beneficial effects of the embodiments of this utility model are as follows: 1. In this utility model, a three-stage filtration system is formed by inserting a coarse filter, a fine filter, and an activated carbon filter along the placement groove. A pin and a rubber ring are inserted into the round hole to lock the filter. The flue gas enters from the bottom of the pipe and passes through the three layers of filter to intercept and adsorb impurities. The filter can be easily disassembled for maintenance by pulling the assembly. This system achieves graded filtration of large particles, fine impurities, and harmful components in the flue gas. The elastic locking ensures the stability of the filter, and the sliding fit facilitates disassembly and assembly, improving the efficiency of installation and disassembly.

[0016] 2. In this utility model, the control system adjusts the extension and retraction of the telescopic rod to drive the slider to slide along the top slide rail of the rotating plate, causing the rotating plate to swing around the fixed block and change its angle. The flue gas enters from the bottom of the flue gas outlet pipe, and the flow rate and direction are adjusted according to the change of the rotating plate angle, thereby realizing dynamic control of the flue gas flow path. This allows for flexible adjustment of the flue gas flow rate and direction according to the flue gas flow and filtration requirements, enhancing the contact efficiency between the flue gas and the filtration mechanism or extending the residence time, reducing impurity deposition, and lowering operating resistance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0018] Figure 1 This is a perspective view of a gas filtration device proposed in this utility model; Figure 2 This is a cross-sectional view of the smoke outlet pipe in a gas filtration device proposed in this utility model. Figure 3 This is a split view of the pin in a gas filter device proposed in this utility model; Figure 4 This is a schematic diagram of the rotating bead structure in a gas filtration device proposed in this utility model; Figure 5 This is an exploded view of the soot blowing mechanism in a gas filtration device proposed in this utility model.

[0019] In the diagram: 1. Smoke outlet pipe; 2. Fixing block one; 3. Filtering mechanism; 31. Placement slot; 32. Activated carbon filter screen; 33. Fine filter screen; 34. Coarse filter screen; 35. Round hole; 36. Pin; 37. Rubber ring; 38. Pulling assembly; 381. Connecting rod; 382. Round plate; 383. Fixing strip; 384. Pull ring; 4. Flow guiding mechanism; 41. Fixing block two; 42. Rotating plate; 43. Slide rail; 44. Slider; 45. Rotating... 46. ​​Moving base; 5. Telescopic rod one; 6. Soot blowing mechanism; 7. Air inlet; 8. Fan one; 9. Support plate; 10. Telescopic rod two; 11. Baffle; 12. Soot scraping mechanism; 13. Telescopic rod three; 14. Scraper; 15. Mounting assembly; 16. Mounting plate; 17. Screw; 18. Sliding assembly; 19. Semicircular groove; 10. Limiting plate; 11. Rotary ball; 12. Air outlet pipe; 13. Fan two; 14. Mounting block; 15. Bolt. Detailed Implementation The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0020] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0021] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] like Figure 1 , Figure 2 and Figure 3As shown, this utility model discloses a gas filtration device, including a smoke outlet pipe 1. Two fixing blocks 2 are fixedly connected to the lower middle part of the inner side of the smoke outlet pipe 1 on both the left and right sides. A filter mechanism 3 is provided at the top of the inner side of the smoke outlet pipe 1. The filter mechanism 3 is used to filter impurities inside the smoke. A flow guiding mechanism 4 is provided at the bottom of the two fixing blocks 2. The flow guiding mechanism 4 is used to guide the flow path of the smoke. A soot blowing mechanism 5 is provided at the bottom of the rear end of the inner side of the smoke outlet pipe 1. A soot scraping mechanism 6 is provided on the left side of the middle part of the inner side of the smoke outlet pipe 1. The filtration mechanism 3 includes an activated carbon filter screen 32. The outer wall of the activated carbon filter screen 32 is slidably connected to the top inner side of the smoke outlet pipe 1. Multiple placement slots 31 are provided on the top inner side of the smoke outlet pipe 1. The outer side of the activated carbon filter screen 32 is slidably connected to the inside of the top placement slot 31. A fine filter screen 33 is slidably connected to the inside of the middle placement slot 31. A coarse filter screen 34 is slidably connected to the inside of the bottom placement slot 31. A round hole 35 is provided on the front top of the smoke outlet pipe 1. A pin 36 is slidably connected to the inside of the round hole 35. Multiple rubber rings 37 are fixedly connected to the top outer wall of the pin 36. A pulling component 38 is provided on the top of the rubber rings 37. Specifically, the filter mechanism 3 uses the placement groove 31 at the top of the inner side of the smoke outlet pipe 1 as its installation base. It consists of a three-stage filtration system, comprising a coarse filter 34, a fine filter 33, and an activated carbon filter 32. The coarse filter 34, installed in the bottom placement groove 31, can intercept larger solid particles in the smoke. The fine filter 33 in the middle placement groove 31 is used to adsorb small impurities in the smoke. The activated carbon filter 32 in the top placement groove 31 utilizes the adsorption properties of activated carbon to remove harmful gases and small particles from the smoke. The three filter layers are inserted into the inner side of the smoke outlet pipe 1 along the placement grooves 31 to form a tightly fitted filter layer. After the filter is installed, the operator inserts the pin 36 into the round hole 35 at the top front of the smoke outlet pipe 1. The rubber ring 37 on the outer wall of the pin 36 contacts the inner wall of the round hole 35. The rubber ring 37 is deformed during insertion, filling the gap between the pin 36 and the round hole 35, generating friction to prevent the pin 36 from coming out on its own, ensuring that the filter is fixed firmly. Pulling... The component 38 is connected to the top of the pin 36. When the filter needs to be replaced or cleaned, the operator pulls the component 38, which moves the pin 36 upward. The rubber ring 37 returns to its original shape and is released from the constraint of the round hole 35. The coarse filter 34, fine filter 33, and activated carbon filter 32 can be pulled out from the placement slot 31 in sequence for maintenance. During the flue gas filtration process, the flue gas generated by the gas enters from the bottom of the flue gas outlet pipe 1. First, it passes through the coarse filter 34 to intercept large particles of impurities. Then, it passes through the fine filter 33 to remove fine pollutants. Finally, it passes through the activated carbon filter 32 to adsorb harmful components. The three layers of filters work together to significantly reduce the impurity content of the discharged flue gas. The elastic locking of the rubber ring 37 and the pin 36 ensures that the filter does not loosen under the impact force generated by the flue gas flow. The sliding cooperation between the placement slot 31 and the filter allows for quick installation and removal of the filter, which not only ensures the stability of the filtration effect but also facilitates later maintenance, effectively improving the practicality and reliability of the gas filtration device.

[0026] like Figure 2 and Figure 5 As shown, the flow guiding mechanism 4 includes multiple fixed blocks 41. The opposite sides of the multiple fixed blocks 41 are respectively fixedly connected to the lower middle part of the left and right sides inside the smoke outlet pipe 1. Rotating plates 42 are rotatably connected between adjacent fixed blocks 41. Slide rails 43 are fixedly connected to the inner top of the two rotating plates 42. Sliding sliders 44 are slidably connected to the top of the slide rails 43. Rotating seats 45 are fixedly connected to the bottom of the two fixed blocks 2 and the top of the sliders 44. Telescopic rods 46 are fixedly connected between adjacent rotating seats 45. Specifically, multiple fixed blocks 41 of the flow guiding mechanism 4 are fixed to the lower middle part of the left and right sides inside the flue duct 1, providing rotational support for the rotating plate 42. The rotating plate 42 is rotatably connected to the fixed blocks 41 via pins and can swing around the connection point in the vertical plane. The slide rail 43 on the inner side of the top of the rotating plate 42 and the slider 44 form a sliding pair, and the slider 44 can slide freely along the slide rail 43. The two ends of the telescopic rod 46 are connected to the bottom of the fixed block 2 and the top of the slider 44 via rotating seats 45, respectively. When the telescopic rod 46 extends, it pushes the slider 44 to slide outward along the slide rail 43, and at the same time drives the rotating plate 42 to rotate outward around the fixed blocks 41, increasing the angle between the rotating plate 42 and the horizontal plane. When the telescopic rod 46 retracts, it pulls the slider 44 to slide inward, and the rotating plate 42 rotates inward, decreasing the angle. This can be adjusted according to the flue gas flow and filtration requirements during the gas filtration process. The flue gas enters from the bottom of the exhaust pipe 1. The control system adjusts the extension and retraction of the telescopic rod 46 to change the tilt angle of the rotating plate 42, thus guiding the flow path of the flue gas. When the angle of the rotating plate 42 is large, the upward flow path of the flue gas narrows and the flow velocity increases, which can enhance the contact efficiency between the flue gas and the filter mechanism 3. When the angle is small, the flow path of the flue gas widens and the flow velocity decreases, which prolongs the residence time of the flue gas in the filter area. The angle of the rotating plate 42 can be precisely adjusted by controlling the extension and retraction of the telescopic rod 46 and the sliding cooperation of the slider 44 on the slide rail 43. By swinging the rotating plate 42, the flow path and velocity of the flue gas in the exhaust pipe 1 are changed, so that the flow guiding mechanism 4 can dynamically optimize the flue gas flow state according to the actual working conditions, improve the filtration efficiency, reduce the deposition of impurities in the pipe, reduce the system operating resistance, and improve the overall performance and stability of the gas filtration device.

[0027] like Figure 3 and Figure 5As shown, the pulling assembly 38 includes a fixing strip 383, the bottom of which is fixedly connected to the top of the pin 36. A pull ring 384 is fixedly connected to the top of the fixing strip 383. The pulling assembly 38 also includes multiple connecting rods 381. The rear sides of the multiple connecting rods 381 are respectively fixedly connected to the front sides of the activated carbon filter screen 32, the fine filter screen 33, and the coarse filter screen 34. A circular plate 382 is fixedly connected to the front side of each of the multiple connecting rods 381. The soot blowing mechanism 5 includes two fans 52. The exterior of the two fans 52 is fixedly connected to the bottom of the rear side of the smoke outlet duct 1. An opening is made at the bottom of the rear end of the inner side of the smoke outlet duct 1. There are two air inlets 51. The outer walls of two fans 52 are fixedly connected to the inside of the two air inlets 51. The bottom rear end of the inner side of the smoke outlet pipe 1 is fixedly connected to two support plates 53. The top of the two support plates 53 is fixedly connected to a telescopic rod 54. The top of the two telescopic rods 54 is fixedly connected to a baffle 55. The ash scraping mechanism 6 includes a telescopic rod 61. The left side of the telescopic rod 61 is fixedly connected to the left end of the middle of the inner side of the smoke outlet pipe 1. The right side of the outer wall of the telescopic rod 61 is slidably connected to a scraper 62. The right side of the scraper 62 is provided with an installation component 63. The front and rear sides of the scraper 62 are provided with sliding components 64. Specifically, the connecting rod 381 of the pulling component 38 is fixed to the front of the activated carbon filter 32, fine filter 33, and coarse filter 34. The front circular plate 382 is connected to the pin 36 at the bottom of the fixing strip 383. When the filter needs to be disassembled, the operator pulls the pull ring 384, which moves the fixing strip 383 and the pin 36 upward. The rubber ring 37 disengages from the locking of the circular hole 35, and the connecting rod 381 is lifted simultaneously, pulling the three layers of filter from the placement groove 31 to achieve quick disassembly of the filter. During installation, the filter is inserted along the placement groove 31, and the pull ring 384 is pressed down to make the pin 36 embed into the circular hole 35. The rubber ring 37 is deformed under pressure to form an elastic lock, ensuring that the filter is installed firmly. The two fans 52 of the soot blowing mechanism 5 are fixed to the air inlet 51 at the bottom of the rear side of the smoke outlet pipe 1. Inside, after being powered on, air is blown into the pipe. The airflow generated by the fan 52 is guided by the height-adjusting baffle 55 of the telescopic rod 54 at the top of the support plate 53, changing the direction of the airflow. When the telescopic rod 54 extends, the baffle 55 moves upward, and the airflow tilts upward to sweep the bottom of the filter mechanism 3. When the telescopic rod 54 retracts, the baffle 55 moves downward, and the airflow sweeps the top of the rotating plate 42 horizontally. The sweeping angle can be adjusted according to the position of the ash accumulation to ensure that the impurities are effectively removed. The telescopic rod 61 of the ash scraping mechanism 6 is fixed to the middle left end of the inner side of the smoke outlet pipe 1. The scraper 62 slides along the axis of the telescopic rod 61 through the sliding component 64. When the telescopic rod 61 extends or retracts, it drives the scraper 62 to move laterally. The sliding component 64 ensures that the scraper 62 moves smoothly and avoids incomplete scraping due to shaking.

[0028] like Figure 1 and Figure 4As shown, the mounting assembly 63 includes a mounting plate 631. The left side of the mounting plate 631 is fixedly connected to the right side of the telescopic rod 61. Multiple screws 632 are threadedly connected to the right side of the mounting plate 631. The outer left side of the middle screw 632 is threadedly connected to the right side of the telescopic rod 61. The sliding assembly 64 includes a limiting plate 642. Multiple limiting plates 642 are fixedly connected to the front and rear sides of the scraper 62 respectively. Semicircular grooves 641 are provided on both the front and rear sides of the scraper 62. Multiple limiting plates 642 are fixedly connected to the interior of two semicircular grooves 641. Multiple limiting plates 642 are rotatably connected to adjacent ones. A ball bearing 643 is rotatably connected to adjacent ones. An exhaust pipe 7 is provided at the top of the smoke exhaust pipe 1. A fan 8 is fixedly connected to the top of the exhaust pipe 7. Two mounting blocks 9 are fixedly connected to the left and right sides of the exhaust pipe 7. Bolts 10 penetrate the top of multiple mounting blocks 9. The outer side of multiple bolts 10 is threadedly connected to the top of the smoke exhaust pipe 1. Specifically, the left side of the mounting plate 631 of the mounting component 63 is fixedly connected to the right side of the telescopic rod 61. The right side is connected to the scraper 62 by multiple screws 632. The middle screw 632 passes through both the mounting plate 631 and the right side of the telescopic rod 61, forming a double fixing structure to ensure that the scraper 62 does not shift during movement and to provide sufficient connection strength. When the scraper 62 needs to be replaced, the old scraper 62 can be removed and the new scraper 62 can be installed by loosening the screws 632. No special tools are required for the replacement process. The semi-circular groove 641 of the sliding component 64 is opened on the front and rear sides of the scraper 62. The limiting plate 642 is fixed in the semi-circular groove 641. The internal rotating ball 643 is made of stainless steel. When the telescopic rod 61 drives the scraper 62... During lateral movement, the rotating ball 643 rolls along the inner wall of the smoke outlet pipe 1 under the constraint of the limiting plate 642, converting sliding friction into rolling friction, making the scraper 62 move more smoothly, reducing wear on the inner wall of the pipe, limiting the axial displacement of the rotating ball 643, and ensuring that it is always in contact with the inner wall of the pipe. When the fan 8 at the top of the exhaust pipe 7 is powered on, it generates an upward suction force, accelerating the discharge of filtered smoke. The mounting blocks 9 on the left and right sides of the exhaust pipe 7 are connected to the top of the smoke outlet pipe 1 by bolts 10. The bolts 10 pass through the mounting blocks 9 and engage with the threaded holes at the top of the exhaust pipe 1 to form a detachable connection. During installation, ensure that the exhaust pipe 7 is reliably sealed to avoid smoke leakage; during disassembly, loosen the bolts 10 to remove the fan 8 for maintenance.

[0029] Working Principle: The flue gas generated by the combustion of gas enters the device from the bottom of the flue gas outlet pipe 1. The flow guiding mechanism 4 then functions. The control system controls the extension and retraction of the telescopic rod 46 according to a preset program or real-time monitoring of the flue gas flow rate. When the telescopic rod 46 extends, it pushes the slider 44 to slide outward along the slide rail 43 at the top of the rotating plate 42, causing the rotating plate 42 to rotate outward around the fixed block 41, increasing the angle between the rotating plate 42 and the horizontal plane, thus narrowing the upward flow path of the flue gas and increasing its velocity. When the telescopic rod 46 retracts, the slider 44 slides inward, the rotating plate 42 rotates inward, the angle decreases, the flue gas flow path widens, and the velocity decreases. In this way, the flue gas velocity and direction are precisely adjusted, creating favorable conditions for subsequent filtration. The flue gas, adjusted by the flow guiding mechanism 4, flows upward. The flue gas flows through the three layers of filters in the filtration mechanism 3. The coarse filter 34 in the bottom placement slot 31 first intercepts larger solid particles in the flue gas, such as ash produced by combustion. The flue gas then passes through the fine filter 33 in the middle placement slot 31, which uses its fiber structure to adsorb fine impurities in the flue gas. Finally, the flue gas passes through the activated carbon filter 32 in the top placement slot 31. The porous structure and adsorption characteristics of the activated carbon effectively remove harmful gases and fine particles from the flue gas. The three layers of filters are installed by sliding fit between the placement slots 31 and the top inner side of the flue gas duct 1. After installation, the operator inserts the pin 36 into the round hole 35 on the front top of the flue gas duct 1. The rubber ring 37 on the outer wall of the pin 36 is in close contact with the inner wall of the round hole 35 and is deformed by compression during insertion. The gaps are filled and friction is generated to prevent the pin 36 from coming out on its own, ensuring that the filter screen is firmly fixed and preventing the filter screen from shifting due to the impact of flue gas flow. During the flue gas filtration process, impurities will gradually adhere to the bottom of the coarse filter screen 34. For larger impurities attached to the bottom of the coarse filter screen 34, the scraping mechanism 6 will handle them. The telescopic rod 61 is fixed to the middle left end of the inner side of the flue gas duct 1 and is connected to the scraper 62 through the mounting assembly 63. The left side of the mounting plate 631 is fixed to the right side of the telescopic rod 61, and the right side is connected to the scraper 62 through multiple screws 632. The middle screw 632 passes through the mounting plate 631 and the right side of the telescopic rod 61, forming a double fixing structure. When the telescopic rod 61 extends or retracts, it drives the scraper 62 to move laterally along the axis. The sliding assembly 6 on the front and rear sides of the scraper 62 4. Ensure smooth movement: The limiting plate 642 in the semi-circular groove 641 fixes the rotating ball 643. Under the constraint of the limiting plate 642, the rotating ball 643 rolls along the inner wall of the smoke outlet pipe 1, converting sliding friction into rolling friction, reducing the moving resistance of the scraper 62 and the wear of the inner wall of the pipe, so that the scraper 62 can thoroughly scrape off the dust accumulated at the bottom of the coarse filter screen 34. The two fans 52 of the dust blowing mechanism 5 are fixed in the air inlet 51 at the bottom rear side of the smoke outlet pipe 1. After being powered on, air is blown into the pipe. The extension and retraction of the telescopic rod 54 is adjusted by the control system, changing the height of the baffle 55 at the top of the support plate 53, thereby adjusting the airflow direction: when the telescopic rod 54 extends, the baffle 55 moves upward, and dust will not be blown out from the fan 52; when the telescopic rod 54 retracts, the baffle 55 moves downward.The airflow horizontally sweeps the top of the rotating plate 42 to prevent impurities from accumulating on the guide mechanism 4. When the filter screen needs to be replaced or cleaned, the operator pulls the pull ring 384 of the pull assembly 38, causing the fixing strip 383 and the pin 36 to move upward. The rubber ring 37 returns to its original shape and disengages from the constraint of the round hole 35. The connecting rod 381 is lifted simultaneously, pulling out the coarse filter screen 34, fine filter screen 33, and activated carbon filter screen 32 from the placement groove 31 in sequence, completing the filter screen disassembly. After maintenance, the filter screen is inserted along the placement groove 31, and the pull ring 384 is pressed down to make the pin 36 embed into the round hole 35. The rubber ring 37 is compressed and deformed again to achieve elastic locking, ensuring that the filter screen is installed firmly. After filtration and dust removal are completed, the purified flue gas is discharged through the exhaust pipe 7 at the top of the exhaust pipe 1. The fan 8 at the top of the exhaust pipe 7 generates an upward suction force after being powered on, accelerating the exhaust of the flue gas. The mounting blocks 9 on the left and right sides are connected to the top of the exhaust pipe 1 by bolts 10, ensuring a reliable seal on the exhaust pipe 7 and preventing flue gas leakage. During disassembly, loosening bolts 10 allows removal of the second fan 8 for maintenance, ensuring continuous and stable equipment operation. Dynamic adjustment of the flow guiding mechanism 4 optimizes flue gas velocity and direction, improving filtration efficiency. The three-stage filter system of the filter mechanism 3 achieves comprehensive interception and adsorption of impurities in the flue gas. The combination of the soot blowing mechanism 5 and the soot scraping mechanism 6 automatically removes accumulated ash from inside the equipment. The structural design of the pulling component 38 and the mounting component 63 ensures convenient disassembly and secure installation of the filter screen and scraper 62 components. The coordinated operation of these components enables the gas filtration device to efficiently filter flue gas, reduce impurity deposition, and lower operating resistance. It also facilitates daily maintenance, significantly improving the practicality and reliability of the equipment, making it suitable for various gas usage scenarios.

[0030] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A gas filtering device comprising a flue (1), characterized in that: The lower inner side of the smoke outlet pipe (1) is fixedly connected to two fixed blocks (2) on both sides. The top inner side of the smoke outlet pipe (1) is provided with a filter mechanism (3), which is used to filter impurities inside the smoke. The bottom of the two fixed blocks (2) is provided with a flow guiding mechanism (4), which is used to guide the flow path of the smoke. The bottom of the rear end of the inner side of the smoke outlet pipe (1) is provided with a soot blowing mechanism (5), and the left side of the middle inner side of the smoke outlet pipe (1) is provided with a ash scraping mechanism (6). The filtration mechanism (3) includes an activated carbon filter screen (32). The outer wall of the activated carbon filter screen (32) is slidably connected to the top inner side of the smoke outlet pipe (1). The top inner side of the smoke outlet pipe (1) is provided with multiple placement slots (31). The outer side of the activated carbon filter screen (32) is slidably connected to the inside of the top placement slot (31). The middle placement slot (31) is slidably connected to a fine filter screen (33). The bottom placement slot (31) is slidably connected to a coarse filter screen (34). The front top of the smoke outlet pipe (1) is provided with a round hole (35). The inside of the round hole (35) is slidably connected to a pin (36). The top outer wall of the pin (36) is fixedly connected to multiple rubber rings (37). The top of the rubber rings (37) is provided with a pulling component (38).

2. A gas filter device according to claim 1, characterised in that: The flow guiding mechanism (4) includes multiple fixed blocks (41). The opposite sides of the multiple fixed blocks (41) are respectively fixedly connected to the lower middle part of the left and right sides inside the smoke outlet pipe (1). Rotating plates (42) are rotatably connected between adjacent fixed blocks (41). Slide rails (43) are fixedly connected to the inner top of the two rotating plates (42). Sliding sliders (44) are slidably connected to the top of the slide rails (43). Rotating seats (45) are fixedly connected to the bottom of the two fixed blocks (2) and the top of the sliding sliders (44). Telescopic rods (46) are fixedly connected between adjacent rotating seats (45).

3. A gas filter device according to claim 1, characterized in that: The pull assembly (38) includes a fixing strip (383), the bottom of which is fixedly connected to the top of the pin (36), and a pull ring (384) is fixedly connected to the top of the fixing strip (383).

4. A gas filter device according to claim 3, characterised in that: The pulling assembly (38) also includes a plurality of connecting rods (381), the rear sides of which are fixedly connected to the front sides of the activated carbon filter (32), the fine filter (33) and the coarse filter (34), respectively, and the front sides of the plurality of connecting rods (381) are fixedly connected to a circular plate (382).

5. A gas filter device according to claim 1, characterized in that: The soot blowing mechanism (5) includes two fans (52). The two fans (52) are fixedly connected to the bottom rear side of the smoke outlet pipe (1). Two air inlets (51) are opened at the bottom rear end of the inner side of the smoke outlet pipe (1). The outer walls of the two fans (52) are fixedly connected to the inside of the two air inlets (51). Two support plates (53) are fixedly connected to the bottom rear end of the inner side of the smoke outlet pipe (1). Telescopic rods (54) are fixedly connected to the top of the two support plates (53). Baffles (55) are fixedly connected to the top of the two telescopic rods (54).

6. A gas filter device according to claim 1, characterized in that: The ash scraping mechanism (6) includes a telescopic rod three (61). The left side of the telescopic rod three (61) is fixedly connected to the left end of the middle of the inner side of the smoke outlet pipe (1). A scraper (62) is slidably connected to the right side of the outer wall of the telescopic rod three (61). An installation component (63) is provided on the right side of the scraper (62). Sliding components (64) are provided on both the front and rear sides of the scraper (62).

7. A gas filter device according to claim 6, characterised in that: The mounting assembly (63) includes a mounting plate (631), the left side of which is fixedly connected to the right side of the telescopic rod (61), and the right side of the mounting plate (631) is threaded with a plurality of screws (632), the outer left side of the middle screw (632) being threadedly connected to the right side of the telescopic rod (61).

8. A gas filter device according to claim 6, characterised in that: The sliding assembly (64) includes a limiting plate (642). The adjacent limiting plates (642) are fixedly connected to the front and rear sides of the scraper (62). The front and rear sides of the scraper (62) are provided with semi-circular grooves (641). The adjacent limiting plates (642) are fixedly connected inside the two semi-circular grooves (641). The adjacent limiting plates (642) are rotatably connected with ball bearings (643).

9. A gas filter device according to claim 1, characterized in that: The top of the smoke outlet pipe (1) is provided with an air outlet pipe (7), and the top of the air outlet pipe (7) is fixedly connected to a fan (8).

10. A gas filter device according to claim 9, characterised in that: Two mounting blocks (9) are fixedly connected to the left and right sides of the exhaust pipe (7). Bolts (10) penetrate the top of the multiple mounting blocks (9), and the outside of the multiple bolts (10) are threaded to the top of the exhaust pipe (1).

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