Carbon flue damper structure and its manufacturing method

Abstract

This invention relates to a carbon fiber flue damper structure and its manufacturing method, and relates to the technical field of dampers. The carbon fiber flue damper structure includes a door frame, with a groove on the inner side wall of the door frame. A door panel is slidably disposed within the groove, and the door panel includes a main plate and a secondary plate. A mounting groove is provided at the bottom of the main plate, and the secondary plate is slidably disposed within the mounting groove by a spring. A connecting block is provided at the bottom of the door frame by a spring, and the connecting block movably abuts against the bottom of the secondary plate. A cleaning unit is provided on the door frame to remove soot that falls onto the door frame and door panel. This invention can solve the following problems existing in the operation of flue dampers in the prior art: by utilizing its own telescopic structure, it can adjust its position synchronously with the thermal deformation of the flue, effectively offsetting the stress generated by the expansion and contraction of the pipe and the damper, and avoiding damage caused by rigid stress at the connection between the damper and the flue; and through the cleaning unit, the bottom ends of the main plate, the bottom surfaces of the main plate and the secondary plate, and the sides of the main plate are cleaned respectively, ensuring that the soot on the door panel is fully removed.

Description

Technical Field

[0001] This invention relates to the technical field of gate valves, and particularly to a carbon flue gate valve structure and its manufacturing method. Background Technology

[0002] Carbon fiber flue gate valves are specialized valves manufactured using the superior high-temperature resistance, corrosion resistance, and self-lubricating properties of artificial graphite. They are primarily used in high-temperature, corrosive flue gas pipelines in industries such as metallurgy and chemicals to regulate and reliably shut off gas flow. They are a key piece of equipment for solving fluid control problems under harsh operating conditions, offering significant advantages and a longer service life compared to traditional metal gate valves. They are sometimes referred to as "graphite flue gate valves" or "graphite gate valves."

[0003] In the carbon industry, the stable operation of flue gas systems is crucial for production efficiency, energy consumption, and environmental protection. However, the high-temperature flue gas produced in carbon manufacturing contains a large amount of soot, dust, unburned carbon particles, and sticky impurities, which are easily deposited and adhered to during the operation of the gate valve. When the gate valve is closed, these impurities are squeezed between the sealing surfaces to form a "layer," resulting in a decrease in sealing effectiveness, causing flue gas leakage, increasing energy consumption, and posing a pollution risk.

[0004] Existing equipment relies on shutdown for cleaning, which has obvious drawbacks. After long-term accumulation of impurities, they undergo physical and chemical changes at high temperatures, forming a complex scale layer that is difficult to remove. Shutting down also interrupts production, reduces efficiency, increases energy consumption, and sudden temperature changes may damage the equipment.

[0005] For example, Chinese patent CN118149113A discloses a flue damper limiting device, including a limiting frame, a movable damper, and a positioning plate. The limiting frame is slidably connected to the movable damper and abuts against the flue through the positioning plate. Driving the movable damper allows it to be inserted into the flue to control the flow of flue gas. Its advantages are: the limiting frame allows the movable damper to move smoothly; the fixed outer plate, fixed inner plate, and positioning plate enhance the stability between the limiting frame and the flue, preventing flue gas leakage and better controlling the flue gas flow; water flows into the water distribution channel through the guide pipe and inlet pipe, rapidly cooling the movable damper over a large area, improving the efficiency of damper maintenance, with low cost and high efficiency; a rotatable movable scraper promptly cleans impurities adhering to the movable damper, which are then collected and discharged through a collection box.

[0006] However, the above-mentioned flue damper limiting device still has some shortcomings in actual use:

[0007] 1. Ash, dust, unburned particles, and sticky impurities in high-temperature flue gas will accumulate on the contact surface between the gate and the door frame. When the gate opens and closes, these impurities adhere to the door panel surface and the edge of the sliding track. When the gate closes, they are also squeezed between the sealing surfaces, forming a "layer". Long-term accumulation of impurities will damage the flatness of the sealing surface, causing the door panel and the sealing structure to not fit completely, thus weakening the sealing effect.

[0008] 2. The existing equipment needs to be shut down for maintenance. After shutdown, there are many problems with handling impurities in the flue gas damper: First, during long-term operation, impurities in the flue gas continuously accumulate to form a thick scale layer. At high temperatures, sticky impurities solidify, hard particles embed, or even react, forming a complex scale layer that is difficult to peel off. Second, stubborn impurities are difficult to clean, requiring special tools, which is time-consuming, labor-intensive, and can easily damage the sealing surface. Impurities in narrow areas are difficult to remove and can accelerate subsequent deposition. Finally, shutdown for cleaning interrupts production. The more impurities there are, the longer the shutdown will be, reducing efficiency, increasing energy consumption, and potentially damaging the equipment due to temperature changes.

[0009] Therefore, based on the above-mentioned viewpoints, it is of great significance to improve and perfect the flue damper limit device, so as to clean the soot adhering to it during the operation of the damper, ensure the cleanliness of the damper, and ensure its sealing effect. Summary of the Invention

[0010] To address the aforementioned problems, this invention provides a carbon flue damper structure and its manufacturing method.

[0011] On the one hand, the carbon flue damper structure includes a door frame, a sliding groove is provided on the inner side wall of the door frame, a door panel is slidably arranged in the sliding groove, the door panel includes a main plate and a sub plate, a drive screw is rotatably arranged on the door frame, and the main plate and the drive screw are threadedly engaged.

[0012] The main board has a mounting slot at the bottom, and the sub-board is slidably mounted in the mounting slot by a spring. The bottom of the door frame has a connecting block by a spring, and the connecting block moves in contact with the bottom of the sub-board.

[0013] The door frame is equipped with a cleaning unit for removing soot that falls onto the door frame and door panel; the cleaning unit includes component one, component two and component three.

[0014] Component 1 includes cleaning blocks, multiple cleaning blocks are symmetrically and equidistantly arranged on both sides of the door frame width direction, and multiple receiving slots are equidistantly arranged on both sides of the door frame width direction. The cleaning blocks are slidably arranged in the receiving slots by spring rods.

[0015] Preferably, a telescopic plate is installed on the side of the cleaning block near the motherboard, and the telescopic end of the telescopic plate is in contact with the bottom of the motherboard. Both the side of the cleaning block near the motherboard and the bottom of the motherboard are provided with an inclined surface.

[0016] Preferably, component two includes a cleaning strip, and mounting grooves are provided on both sides of the bottom width direction of the door frame, with the cleaning strip slidably disposed in the mounting groove on one side;

[0017] The upper end of the sub-plate and the cleaning strip are symmetrically provided with matching inclined surfaces two, and the inclined surfaces two on the cleaning strip are movably matched with the inclined surfaces one.

[0018] Preferably, T-shaped through slots are provided on both sides of the door frame, and an air pump is installed on the side of the door frame via a mounting plate. An air pipe is installed at the output end of the air pump and extends to the top of the through slot.

[0019] Preferably, the door frame is provided with a component three for cleaning the side of the main board. The component three includes a scraper, which is slidably disposed on the door frame along its height direction on one side of the door frame in the width direction.

[0020] Support rods are symmetrically arranged along the width of the door frame, and the scraper makes sliding contact with the support rods.

[0021] Preferably, a winding roller is symmetrically mounted above the door frame via a spiral spring, and pull ropes are wound around the winding roller. Both pull ropes are connected to the scraper strip.

[0022] Preferably, two sets of snap-fit ​​grooves are symmetrically opened at the top and bottom ends of the door frame, and the two ends of the scraper are slidably provided with docking shafts by springs, and the docking shafts are movably snapped into the corresponding snap-fit ​​grooves.

[0023] Preferably, storage slots are symmetrically arranged on both sides of the door frame. A control plate is installed in the storage slot via a spring. The control plate is provided with a push block corresponding to the snap-fit ​​slot. A first mating block is provided at the upper end of the control plate, and a second mating block is provided at the lower end.

[0024] Preferably, the first mating block is provided with an inclined surface three, the second mating block is provided with a mating groove with a triangular cross section, and the auxiliary plate is symmetrically provided with driving blocks along its length direction. The bottom of the driving block is equipped with a mating rod that is movably connected to the mating groove.

[0025] On the other hand, the production method for carbon flue dampers is as follows:

[0026] S1. Flow regulation: The motor drives the drive screw, which drives the main board to rise and fall along the slide groove. By changing the space between the auxiliary plate and the bottom of the door frame, the cross-sectional area of ​​the flue and the flow rate of the flue are adjusted to maintain the system pressure balance.

[0027] S2, Stress Compensation: When the door panel is closed, the sub-panel and the connecting block are pressed together by the spring structure, and the position is adjusted according to the thermal deformation of the flue to offset the expansion and contraction stress and protect the connection.

[0028] S3. Door panel cleaning: Component 1 scrapes away dust from both ends of the bottom; Component 2 scrapes away dust from the bottom of the sub-board and main board; Component 3 cleans the dust from the sides of the main board.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] I. This invention addresses the issue of thermal expansion and contraction in high-temperature industrial flue environments. A secondary plate is slidably mounted within the main plate's mounting slot via a spring, and the bottom connecting block of the door frame is also spring-loaded, allowing the two to abut against each other. Utilizing its own telescopic structure, the plate can adjust its position synchronously with the flue's thermal deformation, effectively offsetting the stress generated by the expansion and contraction of the pipe and the gate, preventing deformation, sealing failure, or damage at the connection between the gate and the flue due to rigid stress, and significantly extending the equipment's service life.

[0031] Second, this invention utilizes a cleaning unit comprising components one, two, and three to clean the bottom ends of the main board, the bottom surface of the main board and sub-board, and the sides of the main board, respectively, ensuring thorough removal of soot from the door panel. Furthermore, through an automated linkage design, the cleaning action is synchronized with the door panel's lifting and closing states, eliminating the need for machine downtime and preventing prolonged dust accumulation that makes cleaning difficult, thus improving cleaning efficiency. Attached Figure Description

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0034] Figure 2 This is a schematic diagram of the positional structure of the docking block of the present invention.

[0035] Figure 3 This is a schematic diagram of the structure on the docking block of the present invention.

[0036] Figure 4 This is a cross-sectional structural diagram of the present invention.

[0037] Figure 5 This is the present invention. Figure 4 A schematic diagram of the structure at point A in the middle.

[0038] Figure 6 This is the present invention. Figure 4 A schematic diagram of the structure at point B.

[0039] Figure 7 This is a schematic diagram of the cleaning block of the present invention.

[0040] Figure 8 This is a schematic diagram showing the position of the scraper strip of the present invention.

[0041] Figure 9 This is the present invention. Figure 8 A schematic diagram of the structure at point C.

[0042] Figure 10 This is the present invention. Figure 8A schematic diagram of the structure at point D.

[0043] Figure 11 This is a schematic diagram of the scraper of the present invention.

[0044] In the diagram, 1 is the door frame; 10 is the door panel; 100 is the main board; 101 is the sub-board; 11 is the drive screw; 12 is the docking block; 2 is the cleaning unit; 20 is component one; 200 is the cleaning block; 201 is the receiving slot; 202 is the spring rod; 203 is the telescopic plate; 21 is component two; 210 is the cleaning strip; 22 is component three; 220 is the scraper; 221 is the support rod; 222 is the take-up roller; 223 is the pull rope; 30 is the through slot; 31 is the air pump; 32 is the air pipe; 40 is the docking shaft; 50 is the storage slot; 51 is the control board; 52 is the push block; 53 is the mating block one; 54 is the mating block two; 55 is the mating slot; 56 is the drive block; 57 is the mating rod; 60 is the mounting slot; and 61 is the stop block. Detailed Implementation

[0045] The following combination Figures 1-11 The embodiments of the present invention will be described in detail below.

[0046] This application discloses a carbon flue damper structure and its manufacturing method. The invention is mainly applied to the operation of flue dampers. Technically, it can prevent impurities from adhering to the damper during operation, which would lead to insufficient sealing between the damper and the frame, leakage of high-temperature flue gas causing heat loss, and overload operation of power equipment increasing power consumption and significantly increasing operating costs. Furthermore, the invention can also solve the problems of needing to stop for cleaning, which often takes a long time, results in a large accumulation of impurities, and is difficult to clean.

[0047] Example 1:

[0048] Reference Figure 1 and Figure 2 As shown, the system includes a door frame 1, with a groove on the inner wall of the door frame 1. A door panel 10 is slidably mounted within the groove. The door panel 10 includes a main plate 100 and a secondary plate 101. A drive screw 11 is rotatably mounted on the door frame 1, and the main plate 100 is threadedly engaged with the drive screw 11. The drive screw 11 is rotated by a motor, and through the threaded engagement between the drive screw 11 and the main plate 100, the main plate 100 is controlled to rise and fall along the groove. This controls the space between the secondary plate 101 on the main plate 100 and the bottom of the door frame 1, thereby adjusting the flow cross-sectional area of ​​the flue and regulating the flue gas flow rate. Simultaneously, changes in flow rate directly affect the pressure distribution within the flue. The door panel 10 can control the flue gas flow resistance to help maintain pressure balance within the system and ensure the stable operation of the production equipment.

[0049] The door panel 10 is made of ceramic fiber containing zirconium, which provides insulation. The zirconium-containing ceramic fiber has a bulk density of 220 kg / m³, is internally insulated with stainless steel, and externally coated. This combination of zirconium-containing ceramic fiber, internal stainless steel, and external coating offers significant advantages in high-temperature resistance, energy efficiency, corrosion resistance, maintenance cycle, and sealing performance. It is suitable for various industrial flue requirements, achieving the effects of "high temperature resistance, low energy consumption, long lifespan, and easy maintenance."

[0050] The main board 100 has a mounting slot at its bottom. The sub-board 101 is slidably mounted in the mounting slot by a spring. The bottom of the door frame 1 has a connecting block 12 by a spring. The connecting block 12 is in contact with the bottom of the sub-board 101.

[0051] When industrial flues, especially high-temperature flue gas ducts, are in operation, the door panel 10 will experience significant thermal expansion and contraction due to temperature changes, which may lead to deformation, sealing failure, or even damage at the connection between the duct and the door panel 10.

[0052] The spring-loaded connecting block 12 and the auxiliary plate 101 can abut against each other. Through its own telescopic structure, it can adjust its position synchronously with the thermal deformation of the flue, offsetting the stress generated by the expansion and contraction of the pipe, avoiding damage to the connection between the gate and the flue due to rigid force, and extending the service life of the equipment.

[0053] A cleaning unit 2 is provided on the door frame 1 to remove soot that falls onto the door frame 1 and the door panel 10; the cleaning unit 2 includes component 1 20, component 2 21 and component 3 22. Component 1 20 cleans the bottom ends of the main board 100, component 2 21 cleans the bottom surface of the main board 100 and the sub-board 101, and component 3 22 cleans the sides of the main board 100.

[0054] Component 1 20 includes cleaning blocks 200. Multiple cleaning blocks 200 are symmetrically and equidistantly arranged on both sides of the door frame 1 in the width direction. Multiple receiving slots 201 are equidistantly arranged on both sides of the door frame 1 in the width direction. The cleaning blocks 200 are slidably disposed in the receiving slots 201 by spring rods 202. When the door panel 10 is raised or lowered, the bottom sides of the main board 100 will contact the cleaning blocks 200. When rising, the side of the main board 100 will abut against the side of the cleaning blocks 200. At this time, the cleaning blocks 200 will be retracted into the receiving slots 201 under the pressure of the main board 100. When descending, the end of the cleaning block 200 extending out of the receiving slot 201 will contact the bottom sides of the main board 100 to clean the dust accumulated on the sides.

[0055] Reference Figure 4 , Figure 5 and Figure 7The diagram shows a structural schematic for cleaning the bottom part of the motherboard 100. Specifically, a telescopic plate 203 is installed on the side of the cleaning block 200 near the motherboard 100. The telescopic end of the telescopic plate 203 moves against the bottom of the motherboard 100. Both the side of the cleaning block 200 near the motherboard 100 and the bottom of the motherboard 100 have inclined surfaces.

[0056] When the mainboard 100 descends, the telescopic end of the telescopic plate 203 on the cleaning block 200 will contact the bottom of the mainboard 100. At the same time, the bottom of the mainboard 100 and the inclined surface of the bottom of the cleaning block 200 will cooperate. As the door panel 10 descends, it will drive the cleaning block 200 to gradually retract into the receiving groove 201. During this process, the telescopic plate 203 will move synchronously to scrape away the dust on the mainboard 100 at the contact position with the telescopic plate 203.

[0057] Reference Figure 3 The diagram shows a structural schematic for cleaning the bottom of the main board 100 and the sub-board 101. Specifically, component 21 includes a cleaning strip 210. Mounting grooves 60 are provided on both sides of the bottom width direction of the door frame 1, and the cleaning strip 210 is slidably disposed within one mounting groove 60. When the door panel 10 is closed, that is, when the sub-board 101 is in contact with the mating block 12, the bottom of the main board 100 and the sub-board 101 can be cleaned using the cleaning strip 210. This allows the door panel 10 to return to a tight contact with the door frame 1, preventing high-temperature flue gas, harmful gases, or dust from leaking through gaps. This prevents abnormal pressure fluctuations within the flue and avoids corrosion of surrounding equipment and pipes by leaked media, while also reducing fugitive emissions into the environment.

[0058] A control groove is formed on the docking block 12 along its length. A control screw is rotatably installed in the control groove. A moving block is threaded onto the control screw and is connected to the cleaning strip 210. The control screw is driven to rotate by a motor (not shown in the figure), which in turn allows the cleaning strip 210 to slide along the length of the docking block 12.

[0059] The upper ends of the sub-plate 101 and the cleaning strip 210 are symmetrically provided with matching inclined surfaces, and the inclined surfaces on the cleaning strip 210 are movably matched with the first inclined surface.

[0060] During the sliding process, the second inclined surface on the cleaning strip 210 will cooperate with the second inclined surface on the sub-plate 101 and the first inclined surface on the main plate 100. The sliding of the cleaning strip 210 will drive the sub-plate 101 to retract. At this time, the cleaning strip 210 will continue to move and enter the bottom of the sub-plate 101. During the movement, the bottom of the sub-plate 101 can be cleaned.

[0061] The cleaning strip 210 has a shape at both ends that matches the bottom of the motherboard 100, allowing for further cleaning of the bottom surface of the motherboard 100 during movement.

[0062] Reference Figure 4 and Figure 6 The diagram shows the structure for sending out impurities. Specifically, T-shaped through slots 30 are provided on both sides of the door frame 1. The continuous movement of the cleaning strip 210 will push the scraped impurities out through the through slots 30 and make them fall off. An air pump 31 is installed on the side of the door frame 1 via a mounting plate. An air pipe 32 is installed at the output end of the air pump 31 and extends to the top of the through slot 30.

[0063] Air is blown into the through groove 30 by the air pump 31 to prevent impurities from accumulating on the side wall of the through groove 30 and clogging the through groove 30, which would prevent the impurities after cleaning from being discharged.

[0064] Reference Figure 8 , Figure 9 , Figure 10 and Figure 11 The diagram shows a structural schematic for cleaning the side of the mainboard 100. Specifically, the door frame 1 is provided with a component 3 22 for cleaning the side of the mainboard 100. The component 3 22 includes a scraper 220, which is slidably disposed on the door frame 1 along its height direction on one side of the door frame 1 in the width direction.

[0065] Support rods 221 are symmetrically arranged on the door frame 1 along its width direction, and scraper strips 220 slide in contact with support rods 221.

[0066] A push plate is provided on the sub-plate 101 via a spring, and the push plate is in active contact with the scraper 220.

[0067] The push plate on the sub-board 101 can lift the scraper 220 up, and then by fixing the scraper 220, the scraper 220 can clean the dust and impurities on the side of the main board 100 when the main board 100 and the sub-board 101 are lowered.

[0068] Dust accumulated on the surface of the motherboard 100 may mix with corrosive components in the flue gas (such as sulfides and moisture) to form "corrosive dirt," which, if left untreated, will slowly corrode the substrate of the motherboard 100. If the dust contains hard particles, it may also scratch the surface during gate handling, maintenance, or minor vibrations. Cleaning the surface dust can directly block the source of this "corrosion + physical damage," preventing the motherboard 100 from experiencing a decrease in strength and structural aging due to surface damage, extending the overall service life of the motherboard 100, and reducing equipment replacement costs.

[0069] The function of the support rod 221 is to ensure that the scraper 220 does not wobble when it slides up and down, and to keep it straight up and down, so that it can always be in contact with the side of the motherboard 100 without gaps, and to ensure that the scraper 220 can effectively clean the motherboard 100 during the lifting and lowering process.

[0070] Reference Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, specifically, a winding roller 222 is symmetrically mounted on the top of the door frame 1 via a spiral spring. A pull rope 223 is wound around the winding roller 222, and both pull ropes 223 are connected to the scraper strip 220.

[0071] Initially, the spiral spring remains open due to the gravity of the scraper 220. As the scraper 220 rises with the auxiliary plate 101, the spiral spring gradually contracts. The pull rope 223 on the take-up roller 222 gradually winds around the scraper.

[0072] Reference Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, this is a structural diagram of fixing the scraper 220; specifically, two sets of snap-fit ​​grooves are symmetrically opened at the upper and lower ends of the door frame 1, and the two ends of the scraper 220 are slidably provided with docking shafts 40 by springs, and the docking shafts 40 are movably snapped into the corresponding snap-fit ​​grooves.

[0073] The door frame 1 is also symmetrically provided with storage slots 50 on both sides. A control plate 51 is installed in the storage slot 50 by a spring. The control plate 51 is provided with a push block 52 corresponding to the snap-fit ​​slot. The upper end of the control plate 51 is provided with a first mating block 53 and the lower end is provided with a second mating block 54.

[0074] The first mating block 53 is provided with an inclined surface three, the second mating block 54 is provided with a mating groove 55 with a triangular cross section, and the auxiliary plate 101 is symmetrically provided with a driving block 56 along its length direction. The bottom of the driving block 56 is equipped with a mating rod 57 that is movably connected to the mating groove 55.

[0075] In the initial state, the push block 52 on the control board 51 is engaged in the engagement slot. When the sub-board 101 moves upward with the scraper 220, the docking shafts 40 at both ends of the scraper 220 are always in a retracted state due to the restriction of the side of the door frame 1 and the docking block 12, which does not affect the rise of the scraper 220. When the scraper 220 rises to the top, the push block 52 will engage with the mating block 53 on the top of the control board 51, pushing the control board 51 to slide and canceling the engagement between the push block 52 and the engagement slot. At this time, the docking shafts 40 on the scraper 220 will penetrate into the engagement slot, and the scraper 220 will be fixed to the top of the door frame 1. At this time, the main board 100 is driven to descend, and the scraper 220 will contact the side of the main board 100, scraping away the dust on the surface of the main board 100.

[0076] When the sub-board 101 descends to the bottom along with the main board 100, the mating rod 57 on the drive block 56 will contact the mating groove 55 on the mating block 2 54. The continuous descent of the mating rod 57 will push the control board 51 to slide in the opposite direction. At this time, the push block 52 on the control board 51 will push the docking shaft 40 on the scraper 220 to retract. At this time, the scraper 220 returns to the bottom under the action of gravity.

[0077] Furthermore, due to the action of the spiral spring, the scraper 220 descends relatively slowly, preventing it from falling suddenly and causing damage.

[0078] It should be noted that the spring force of the mounting docking shaft 40 is greater than the spring force of the mounting control plate 51, to prevent the control plate 51 from returning to its initial position under the action of the spring when the scraper 220 is fixed at the top, thus causing the docking shaft 40 to retract.

[0079] Example 2:

[0080] Based on Embodiment 1, in order to further improve the sealing performance of the door panel 10, a stop 61 is also proposed, which is beneficial to blocking the gap between the sub-panel 101 and the door frame 1.

[0081] Reference Figure 2 As shown, this is a structural schematic diagram to improve the sealing performance of the door panel 10; specifically, mounting grooves 60 are provided on both sides of the connecting block 12 along its length, and a stop block 61 is provided in the mounting groove 60 through a spring rod 202, with the upper end of the stop block 61 being set into a pointed shape.

[0082] The purpose of the stop block 61 is to block the gap between the sub-plate 101 and the door frame 1 when the door panel 10 is closed, thereby improving the sealing performance. Precisely addressing the gap issue between the sub-plate 101 and the door frame 1 when the door panel 10 is closed not only directly improves the local sealing effect but also ensures the overall sealing reliability of the door panel 10 and door frame 1, preventing problems such as media leakage, environmental pollution, and equipment damage caused by gaps.

[0083] As the motherboard 100 descends and approaches the docking block 12, it gradually comes into contact with the stop block 61, causing the stop block 61 to retract into the mounting slot 60. Furthermore, the pointed top of the stop block 61 can cooperate with the cleaning strip 210 during its movement, without affecting the sliding of the cleaning strip 210.

[0084] During operation: First, the motor drives the drive screw 11 to rotate, which in turn drives the main board 100 to rise and fall along the slide. The cross-sectional area of ​​the flue is adjusted by the change in space between the auxiliary plate 101 and the bottom of the door frame 1, thereby regulating the flue gas flow rate and maintaining the system pressure balance.

[0085] When the door panel 10 is closed, the sub-panel 101 and the connecting block 12 are pressed together by the spring structure to counteract the expansion and contraction stress and prevent damage to the connection.

[0086] Step 2, Component 1 20 (cleaning the bottom ends of the motherboard 100): When the motherboard 100 descends, the telescopic plate 203 of the cleaning block 200 contacts the bottom of the motherboard 100, and the inclined surface causes the cleaning block 200 to retract into the receiving groove 201 to scrape off the dust at both ends of the bottom; when the motherboard 100 rises, the cleaning block 200 is pushed into the receiving groove 201 to avoid obstruction.

[0087] Component 21 (cleaning the bottom surface of main board 100 and sub-board 101): When the door panel 10 is closed, the motor drives the control screw to slide the cleaning strip 210. The sub-board 101 is retracted by the inclined plane. The cleaning strip 210 scrapes off the dust on the bottom surface of the sub-board 101 and main board 100. The impurities are discharged through the through groove 30, and the air pump 31 blows air into the through groove 30 to prevent blockage.

[0088] Component 3 22 (Main Board 100 Side Cleaning): The sub-board 101 rises, causing the scraper 220 to rise. After rising to the top, the docking shaft 40 is engaged and fixed in the slot. When the main board 100 descends, the scraper 220 cleans the side dust. When the sub-board 101 descends to the bottom, the cooperating rod 57 pushes the control board 51 to reset the scraper 220.

[0089] Third, the stop blocks 61 on both sides of the connecting block 12 are set by the spring rod 202. When the door panel 10 is closed, the main board 100 abuts against the stop block 61 and retracts into the mounting groove 60. When the sharp corner of the stop block 61 blocks the gap between the sub-plate 101 and the door frame 1, it improves the sealing performance and does not affect the sliding of the cleaning strip 210.

[0090] In summary, this device ensures stable operation of the flue through linkage adjustment, compensation, cleaning, and sealing optimization.

[0091] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects.

[0092] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A carbon flue damper structure, including a door frame (1), characterized in that: A sliding groove is provided on the inner side wall of the door frame (1), and a door panel (10) is slidably arranged in the sliding groove. The door panel (10) includes a main plate (100) and a secondary plate (101). A drive screw (11) is rotatably arranged on the door frame (1), and the main plate (100) and the drive screw (11) are threadedly engaged. The main board (100) has a mounting slot at the bottom, and the sub-board (101) is slidably mounted in the mounting slot by a spring. The bottom of the door frame (1) is provided with a connecting block (12) by a spring, and the connecting block (12) is in contact with the bottom of the sub-board (101). The door frame (1) is provided with a cleaning unit (2) for removing soot that falls onto the door frame (1) and the door panel (10). The cleaning unit (2) includes component one (20), component two (21) and component three (22). Component one (20) includes a cleaning block (200), and multiple cleaning blocks (200) are symmetrically and equidistantly arranged on both sides of the width direction of the door frame (1). Multiple receiving slots (201) are equidistantly arranged on both sides of the width direction of the door frame (1). The cleaning blocks (200) are slidably mounted in the receiving slots (201) by a spring rod (202). The door frame (1) is provided with a component three (22) for cleaning the side of the main board (100). The component three (22) includes a scraper (220), which is slidably disposed on the door frame (1) along its height direction on one side of the width direction. Support rods (221) are also symmetrically disposed on the door frame (1) along its width direction. The scraper (220) and the support rods (221) are in sliding contact. A winding roller (222) is symmetrically mounted on the top of the door frame (1) via a spiral spring. A pull rope (223) is wound around the winding roller (222), and both pull ropes (223) are connected to the scraper strip (220). The door frame (1) is also symmetrically provided with storage slots (50) on both sides. A control plate (51) is provided in the storage slot (50) by means of a spring. A push block (52) is provided on the control plate (51) corresponding to the snap-fit ​​slot. A first mating block (53) is provided at the upper end of the control plate (51) and a second mating block (54) is provided at the lower end. The first mating block (53) is provided with a three-sided inclined surface, the second mating block (54) is provided with a mating groove (55) with a triangular cross section, and the auxiliary plate (101) is symmetrically provided with a driving block (56) along its length direction. The bottom of the driving block (56) is equipped with a mating rod (57) that is movably connected to the mating groove (55).

2. The carbon flue damper structure according to claim 1, characterized in that: A telescopic plate (203) is installed on the side of the cleaning block (200) near the motherboard (100). The telescopic end of the telescopic plate (203) is in contact with the bottom of the motherboard (100). A sloping surface is provided on both the side of the cleaning block (200) near the motherboard (100) and the bottom of the motherboard (100).

3. The carbon flue damper structure according to claim 1, characterized in that: Component 2 (21) includes a cleaning strip (210). The bottom width direction of the door frame (1) is provided with mounting grooves (60) on both sides. The cleaning strip (210) is slidably arranged in the mounting groove (60) on one side. The upper end of the sub-plate (101) and the cleaning strip (210) are symmetrically provided with matching inclined surfaces 2. The inclined surfaces 2 on the cleaning strip (210) are movably matched with the inclined surfaces 1.

4. The carbon flue damper structure according to claim 1, characterized in that: T-shaped through slots (30) are provided on both sides of the door frame (1). An air pump (31) is installed on the side of the door frame (1) through a mounting plate. An air pipe (32) is installed at the output end of the air pump (31) and extends to the top of the through slot (30).

5. The carbon flue damper structure according to claim 1, characterized in that: The door frame (1) has two sets of snap-fit ​​grooves symmetrically opened at the top and bottom ends. The two ends of the scraper (220) are provided with a docking shaft (40) through a spring. The docking shaft (40) is movably snapped into the corresponding snap-fit ​​groove.

6. A method for producing carbon flue dampers, further comprising the carbon flue damper structure as described in any one of claims 1-5, characterized in that: The production method is as follows: S1, Flow regulation: The motor drives the drive screw (11), which drives the main board (100) to rise and fall along the slide. By changing the space between the auxiliary plate (101) and the bottom of the door frame (1), the cross-sectional area of ​​the flue and the flow rate of the flue are adjusted to maintain the system pressure balance; S2, Stress compensation: When the door panel (10) is closed, the auxiliary plate (101) and the connecting block (12) are pressed together by the spring structure. The position is adjusted according to the thermal deformation of the flue to offset the expansion and contraction stress and protect the connection; S3, Door panel (10) cleaning: Component one (20) scrapes off the dust at both ends of the bottom, component two (21) scrapes off the dust on the bottom surface of the auxiliary plate (101) and the main board (100), and component three (22) cleans the dust on the side of the main board (100).

Images