Flue gas collection and treatment device for galvanized sheet production line

Abstract

The application discloses a galvanized sheet production line flue gas collecting and processing device and relates to the technical field of galvanized sheet production line flue gas collecting and processing. The galvanized sheet production line flue gas collecting and processing device comprises a gas collecting hood, a flue gas collecting tank, a telescopic screw assembly and a spiral blade. The flue gas collecting tank is arranged above the gas collecting hood and can be actively rotated to collect flue gas generated when the galvanized sheet leaves a hot galvanizing tank. The telescopic screw assembly is arranged on the inner wall of the flue gas collecting tank and comprises the spiral blade, which is used for effectively guiding the flue gas generated on the surface of the galvanized sheet and rapidly discharging the flue gas to a flue gas collecting area. The flue gas collecting tank which can be actively rotated around the galvanized sheet can spiral guide and dynamically capture the moving flue gas flow generated in the galvanizing process. The rotating structure can uniformly adsorb the flue gas attached to the surface of the galvanized sheet and effectively avoid the local dead angle problem existing in the traditional fixed flue gas collecting device.

Description

Technical Field

[0001] This invention relates to the field of flue gas collection and treatment technology for galvanized sheet production lines, specifically to a flue gas collection and treatment device for galvanized sheet production lines. Background Technology

[0002] Galvanized steel sheet refers to steel sheet with a layer of zinc metal deposited on its surface through hot-dip galvanizing or electro-galvanizing processes to improve its corrosion resistance. Galvanized steel sheet is widely used in industries such as construction, home appliances, and automobiles. During the production of galvanized steel sheet, especially in the hot-dip galvanizing stage, a large amount of fumes are generated. This is because when the steel enters the molten zinc bath, grease and residues on the steel surface will burn or evaporate, producing fumes containing particulate matter, volatile organic compounds, and other harmful substances. Collecting and treating these fumes is crucial, as direct emission without treatment will pollute the environment, affect air quality, and harm human health.

[0003] However, the existing flue gas collection and treatment devices for galvanized sheet production lines still have the following problems:

[0004] 1. Traditional fixed collection devices face multiple limitations when galvanized sheets leave the hot-dip galvanizing bath. As the galvanized sheets continuously release zinc fumes during the extraction process, and the distribution of the fumes is dynamic and uneven, fixed fume collection devices cannot achieve comprehensive coverage of the fumes around the galvanized sheets and at different heights. The fumes can easily escape from the edges or top. At the same time, the static structure cannot break the boundary layer of the fumes on the sheet surface to prevent the escape of fine zinc fumes, and its passive suction mode will create collection dead zones, causing zinc fumes to volatilize. This not only reduces collection efficiency but also increases the risk of environmental pollution.

[0005] 2. In addition, flue gas collection devices with only a single suction function lack a dynamic and uniform airflow guiding structure, making it difficult to achieve efficient and orderly collection of flue gas escaping from the surface of galvanized sheets. During operation, such devices are prone to uneven distribution of flue gas in the collection area, forming local eddies and stagnation, resulting in excessively high flue gas concentrations in some areas that cannot be extracted and treated in time, leading to uneven purification effect, incomplete collection, and a significant decrease in overall flue gas collection efficiency. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a flue gas collection and treatment device for galvanized sheet production lines, which solves the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a flue gas collection and treatment device for a galvanized sheet production line, comprising: a gas collection hood; a flue gas collection tank, which is positioned above the gas collection hood and can rotate actively to collect the flue gas carried out when the galvanized sheet leaves the hot-dip galvanizing bath; a telescopic spiral assembly, which is positioned on the inner wall of the flue gas collection tank and includes spiral blades for effectively guiding the flue gas generated on the surface of the galvanized sheet and quickly discharging it to the flue gas collection area; a control rod, which is connected to the telescopic spiral assembly and can adjust the working length of the telescopic spiral assembly, causing it to retract when approaching the narrow side of the galvanized sheet and extend when approaching the wide side; and a conical collection hood, which is positioned above the flue gas collection tank and can move up and down reciprocally.

[0008] Furthermore, the telescopic spiral assembly also includes a first-stage sleeve, a second-stage sleeve, and a third-stage sleeve nested in sequence. The three are coaxially arranged and can slide and rotate relative to each other. The first-stage sleeve is rotatably installed on the side wall of the flue gas collection tank. A first mating post is installed on the outer wall of the third-stage sleeve. A spiral through groove is opened on the corresponding second-stage sleeve to slide with the first mating post. A second mating post is installed on the outer wall of the second-stage sleeve. A spiral through groove is opened on the corresponding first-stage sleeve to slide with the second mating post. Spiral blades are fixedly fitted on the outside of the first-stage sleeve, the second-stage sleeve, and the third-stage sleeve.

[0009] Furthermore, the control rod is rotatably mounted on the inner wall of the third-stage sleeve and movably cooperates with the first-stage sleeve. An elliptical fixing frame is fitted on the outer side of the flue gas collection tank, and the end of the control rod away from the axis of the flue gas collection tank is slidably connected to the elliptical fixing frame through a moving column.

[0010] Furthermore, the conical collection hood is provided with two sets of left-right distributed partition assemblies. The partition assembly includes multiple partitions distributed vertically. The inner wall of the conical collection hood is equipped with an inclined rod that slides together with the multiple partitions. An inclined spring sleeved on the inclined rod connects adjacent partitions.

[0011] Furthermore, the upper end of the conical collection hood is provided with an outlet plate, and the inner wall of the outlet plate is equipped with a bristle sealing strip, the bristle sealing strip being made of silicon carbide ceramic fiber.

[0012] Furthermore, rotating baffles are provided on both the left and right sides of the outlet. The rotating baffles are rotatably mounted on the upper end of the conical collection cover via a rotating shaft. A rotating gear is installed at the rear end of the rotating shaft, and the two rotating gears mesh with each other.

[0013] Furthermore, an external gear ring is fixedly fitted on the upper end of the flue gas collection tank, a connecting gear meshes on the rear side of the external gear ring, a bevel gear one is installed on the upper end of the connecting gear, a bevel gear two meshes on the bevel gear one, one side of the bevel gear two is fixedly connected to the corresponding rotating gear, and the other side of the bevel gear two is connected to the output shaft of the drive motor.

[0014] Furthermore, an installation ring that is rotatably connected to the flue gas collection tank is fixedly fitted on the outer side of the conical collection hood. A push plate is installed at the rear end of the installation ring, and the lower end of the push plate is connected to the output end of the cylinder. The cylinder is mounted on the flue gas collection device located behind the flue gas collection tank via a support. The drive motor slides vertically with the flue gas collection device via a mounting bracket. The rotating gear, bevel gear one, and bevel gear two are all rotatably connected to the mounting bracket. The push plate slides vertically with the guide rail mounted on the flue gas collection device.

[0015] Furthermore, the mounting ring is fixedly connected to the elliptical fixing frame, and a support rod evenly distributed along the circumference of the flue gas collection tank is installed on the upper end of the gas collection hood. A guide post is installed on the upper end of the support rod, and a side plate that slides up and down with the guide post is installed on the outer side of the mounting ring. A connecting spring sleeved on the outer side of the guide post is connected between the side plate and the support rod.

[0016] Furthermore, the spiral blades are uniformly provided with air perforations, and the partitions are uniformly provided with air vents.

[0017] The present invention has the following beneficial effects:

[0018] (1) The flue gas collection and treatment device of the galvanized sheet production line, by setting a flue gas collection tank that can actively rotate around the galvanized sheet, can form a spiral guidance and dynamic capture effect on the moving flue gas flow generated during the galvanizing process. The rotating structure can achieve uniform adsorption of flue gas attached to each area of ​​the galvanized sheet surface, effectively avoiding the local dead angle problem of traditional fixed flue gas collection devices, thereby significantly improving the overall flue gas collection efficiency. At the same time, the conical collection hood and the flue gas collection tank can move up and down in the vertical direction, so that the flue gas collection area can be dynamically expanded. The dynamic negative pressure field formed inside the flue gas collection tank and the conical collection hood can effectively destroy the flue gas boundary layer on the galvanized sheet surface, enhance the stripping effect of flue gas from the steel plate surface, prevent flue gas from lingering or escaping, and further improve the thoroughness of flue gas capture.

[0019] (2) The flue gas collection and treatment device of the galvanized sheet production line, by setting up a telescopic spiral component structure that can rotate synchronously with the flue gas collection tank and realize multi-level linkage, can orderly control the telescopic and rotational movement of the spiral blades, so that a stable and continuous swirling field is formed during operation, thereby efficiently guiding and collecting the zinc fumes escaping from the surface of the galvanized sheet; at the same time, under dynamic rotation, the structure can also automatically adjust the spatial position of the spiral blades according to the shape of the galvanized sheet, ensuring that it always maintains a safe distance from the galvanized sheet, effectively avoiding mechanical interference problems that may be caused by rotational movement, and significantly improving the adaptability and stability of the flue gas collection system.

[0020] (3) The flue gas collection and treatment device of the galvanized sheet production line divides the inner cavity of the conical collection hood into an independent flow channel by setting a baffle assembly, which guides the flue gas to flow in a directional manner along both sides of the galvanized sheet, accelerates the local airflow, and enhances the peeling effect on the flue gas attached to the surface of the galvanized sheet. At the same time, the rotating baffles rotating in opposite directions continuously fan the air towards the outlet, guide the external cold air and blow it to the surface area of ​​the galvanized sheet, forming a convection air curtain, which effectively suppresses the upward dispersion of flue gas and prevents it from leaking from the outlet, thereby further improving the overall sealing performance of the flue gas collection system.

[0021] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 for Figure 1 A schematic diagram of a half-section planar structure;

[0024] Figure 3 This is a partial structural diagram of the gas collection hood, flue gas collection tank, and conical collection hood in this invention;

[0025] Figure 4 This is a cross-sectional view of the flue gas collection tank in this invention;

[0026] Figure 5 This is a schematic diagram of the extension of the telescopic spiral assembly in this invention;

[0027] Figure 6 This is a schematic diagram of the contraction of the telescopic spiral assembly in this invention;

[0028] Figure 7 This is a schematic diagram illustrating the fit between the primary sleeve, secondary sleeve, and tertiary sleeve in this invention.

[0029] Figure 8 This is a cross-sectional view of the conical collection hood in this invention;

[0030] Figure 9 This is a schematic diagram of the conical collection hood and partition assembly in this invention;

[0031] Figure 10 This is a schematic diagram of the structure of the partition, the inclined rod, and the inclined spring in this invention;

[0032] Figure 11 This is a schematic diagram of the structure of the outlet plate and the brush sealing strip in this invention;

[0033] Figure 12 This is a schematic diagram of the rotating baffle and rotating gear in this invention;

[0034] Figure 13 This is a schematic diagram of the structure of the connecting gear, external gear ring, bevel gear one, and bevel gear two in this invention.

[0035] In the diagram, 1. Gas collection hood; 2. Hot-dip galvanizing tank; 3. Flue gas collection equipment; 4. Flue gas collection tank; 41. Connecting ring; 42. Primary sleeve; 421. Spiral groove two; 43. Secondary sleeve; 431. Spiral groove one; 432. Mating column two; 44. Tertiary sleeve; 441. Mating column one; 442. Control rod; 45. Spiral blade; 451. Air vent; 46. External gear ring; 461. Connecting gear; 462. Bevel gear one; 463. Bevel gear two; 4 64. Drive motor; 47. Mounting bracket; 5. Oval fixing bracket; 6. Conical collection cover; 61. Outlet; 611. Brush sealing strip; 62. Partition plate; 621. Vent hole; 622. Inclined rod; 623. Inclined spring; 63. Rotating baffle; 631. Rotating shaft; 632. Rotating gear; 7. Mounting ring; 71. Push plate; 711. Guide rail; 72. Cylinder; 73. Support rod; 731. Guide column; 732. Side plate; 733. Connecting spring. Detailed Implementation

[0036] 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.

[0037] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0038] The following is based on Figures 1-13 This invention describes a flue gas collection and treatment device for a galvanized sheet production line provided in an embodiment of the present invention.

[0039] Please see Figure 1 and Figure 2The galvanized sheet production line flue gas collection and treatment device includes a gas collection hood 1, which is installed above the existing hot-dip galvanizing tank 2. The hot-dip galvanizing tank 2 contains an appropriate amount of zinc liquid, which is used to immerse the annealed galvanized sheet to form a uniform zinc coating on its surface. During this process, the zinc in the hot-dip galvanizing tank 2 will volatilize at high temperature to generate zinc fumes. At this time, the gas collection hood 1 covering the area above the hot-dip galvanizing tank 2 can effectively capture the generated zinc fumes and prevent them from spreading to the outside. A flue gas collection device 3 is installed behind the hot-dip galvanizing tank 2. The flue gas collection device 3 is connected to the gas collection hood 1 through a collection pipe, thereby realizing the continuous extraction and centralized treatment of zinc fumes.

[0040] Please see Figures 1-4 To improve the efficiency of collecting the fumes carried by the galvanized sheet during the hot-dip galvanizing process, a fumes collection tank 4 is installed above the right side of the fumes collection hood 1. When the galvanized sheet completes the galvanizing process from left to right and is drawn out of the hot-dip galvanizing tank 2, it passes upward through the fumes collection tank 4. The fumes collection tank 4 is used to capture the zinc fumes carried out by the galvanized sheet. The fumes collection tank 4 is connected to the fumes collection hood 1 to achieve continuous guidance and centralized treatment of the fumes. Under the suction of the external fumes collection device 3, the fumes collection tank 4 can work together with the fumes collection hood 1 to achieve efficient extraction of fumes. The lower end of the fumes collection tank 4 is equipped with a connecting ring 41 that is rotatably connected to the top of the fumes collection hood 1. The fumes collection tank 4 can actively rotate around the galvanized sheet, thereby forming a spiral guidance and dynamic capture effect on the moving fumes. The dynamic rotation can uniformly absorb the fumes attached to each area of ​​the galvanized sheet surface, avoiding the dead zone problem of fixed collection devices, thus significantly improving the fumes collection efficiency.

[0041] Please see Figures 4-7To further improve the collection efficiency of flue gas carried out by galvanized steel sheets, a telescopic spiral assembly is also installed on the inner wall of the flue gas collection tank 4. The telescopic spiral assembly can rotate synchronously with the flue gas collection tank 4. The telescopic spiral assembly includes a first-stage sleeve 42, a second-stage sleeve 43, and a third-stage sleeve 44 nested in sequence. The first-stage sleeve 42 is rotatably installed on the side wall of the flue gas collection tank 4. The three are arranged coaxially and can slide and rotate relative to each other. The third-stage sleeve 44 can move along its axial direction. A mating post 441 is installed on the outer wall of the third-stage sleeve 44. A spiral groove 431 is opened on the corresponding second-stage sleeve 43. The two form a sliding fit. When the third-stage sleeve... When the secondary sleeve 43 moves and rotates, the interaction between the first mating post 441 and the first spiral groove 431 causes the secondary sleeve 43 to move axially along the tertiary sleeve 44 while rotating, achieving a compound motion of rotation and extension. The outer wall of the secondary sleeve 43 is equipped with a second mating post 432, and the corresponding primary sleeve 42 is provided with a second spiral groove 421. The two also form a sliding fit structure. When the secondary sleeve 43 rotates and undergoes axial displacement under the drive of the tertiary sleeve 44, this motion is transmitted to the primary sleeve 42 through the fit between the second mating post 432 and the second spiral groove 421, thereby driving the primary sleeve 42 to rotate synchronously.

[0042] In addition, spiral blades 45 are fixedly fitted on the outside of the first-stage sleeve 42, the second-stage sleeve 43, and the third-stage sleeve 44. Air passage holes 451 are evenly distributed on the spiral blades 45, which facilitate smoother passage of flue gas through the blade area and reduce the generation of local eddies. To avoid interference and collision between the spiral blades 45 and the relatively stationary galvanized sheet during rotation, the spiral blades 45 are designed with a structure where the size gradually decreases from the outside to the inside. That is, the outer edge of the spiral blades 45 gradually narrows towards the central axis, thus ensuring effective airflow guidance while leaving sufficient space for movement to prevent direct contact with the galvanized sheet. The spiral blades 45 can form a stable swirling field when the entire assembly rotates, thereby efficiently guiding and collecting the flue gas escaping from the surface of the galvanized sheet. Furthermore, the synchronized telescopic spiral assembly's telescopic movement ensures that the spiral blades 45 maintain a safe distance from the galvanized sheet even during dynamic rotation, avoiding mechanical interference caused by rotation. This multi-stage linkage telescopic spiral assembly structure not only achieves orderly transmission control from the third-stage sleeve 44 to the first-stage sleeve 42, but also effectively improves the dynamic response performance and airflow organization efficiency in the flue gas capture process. At the same time, the structure also has good expandability and adjustment flexibility, which can better adapt to galvanized sheet products and reduce flue gas escape rate, thereby improving the overall purification efficiency.

[0043] Please see Figures 3-6To control the working length of the telescopic spiral assembly by adjusting the movement of the three-stage sleeve 44, so that it contracts when approaching the narrow side of the galvanized sheet and extends when approaching the wide side, a control rod 442 is rotatably installed on the inner wall of the three-stage sleeve 44. The control rod 442 is movablely engaged with the first-stage sleeve 42. An elliptical fixing frame 5 is fitted on the outer side of the flue gas collection tank 4. The elliptical fixing frame 5 is distributed with non-uniform diameters along its circumferential contour. Specifically, it is set with an inward concave structure at the position corresponding to the narrow side of the galvanized sheet and an outward convex structure at the position corresponding to the wide side, thereby forming... The guide path has a periodic undulation. The end of the control rod 442 away from the axis of the flue gas collection tank 4 is slidably connected to the elliptical fixed frame 5 through a moving column. Since the elliptical fixed frame 5 remains stationary, while the control rod 442 rotates with the telescopic rotating assembly and the flue gas collection tank 4, a relative motion is generated between the two. This allows the control rod 442 to reciprocate and extend according to the changes in its contour when passing through different curvature areas of the elliptical fixed frame 5. The three-stage sleeve 44 moves synchronously with the control rod 442, thereby realizing the dynamic adjustment of the telescopic spiral assembly.

[0044] For preferred options, please refer to [link / reference]. Figures 1-3 A conical collection hood 6 is installed above the flue gas collection tank 4. Its inner cavity has a tapered structure, which is used to further concentrate and guide the flue gas after it has been initially guided by the flue gas collection tank 4. This helps to reduce airflow resistance, reduce airflow diffusion loss, and enhance the collection efficiency of zinc fumes. In addition, the conical collection hood 6 can move up and down reciprocally. The conical collection hood 6 is rotatably connected to the flue gas collection tank 4. The conical collection hood 6 itself does not rotate synchronously with the flue gas collection tank 4, but it can drive the flue gas collection tank 4 to move up and down synchronously. The dynamic negative pressure field generated inside it can effectively destroy the flue gas boundary layer on the surface of the galvanized sheet, improve the peeling effect of the flue gas attached to the surface of the galvanized sheet, and prevent the flue gas from escaping. It should be noted that, in order to ensure the sealing performance between the flue gas collection tank 4 and the gas collection hood 1, the aforementioned connecting ring 41 is retractable. On the one hand, the connecting ring 41 realizes the rotational connection between the flue gas collection tank 4 and the gas collection hood 1, and on the other hand, it compensates for the displacement difference between the two during the relative movement process through its own telescoping function, so as to ensure that the entire flue gas collection system can still maintain good sealing performance in dynamic operation and prevent flue gas leakage.

[0045] Additionally, please see Figures 8-11The conical collection hood 6 has an outlet 61 at its upper end, which provides a continuous passage for the galvanized sheet, allowing it to be vertically upwards to subsequent processes after galvanizing. Inside the conical collection hood 6 are two sets of baffle assemblies distributed lateral to galvanized sheet. These baffle assemblies include multiple vertically distributed baffles 62, which divide the inner cavity of the conical collection hood 6 into independent flow channels. This guides the flue gas to flow directionally along both sides of the galvanized sheet, accelerating local airflow and enhancing the removal of flue gas adhering to the galvanized sheet surface. Simultaneously, the symmetrically distributed baffles 62 balance the airflow pressure distribution within the conical collection hood 6, preventing unilateral... To prevent flue gas from escaping, the baffle 62 has evenly spaced ventilation holes 621, which can effectively disrupt the flue gas layer and promote faster and more uniform absorption of the flue gas. The inner wall of the conical collection hood 6 is equipped with an inclined rod 622 that slides and cooperates with multiple baffles 62. An inclined spring 623 sleeved on the inclined rod 622 connects adjacent baffles 62. When the conical collection hood 6 moves up and down, the baffle assembly can generate adaptive swing along the inclined rod 622 under the combined action of gravity and spring force. By continuously changing the shape of the airflow channel, micro-turbulence is generated, which effectively disrupts the laminar boundary where the flue gas adheres. At the same time, the active swing of the baffle 62 significantly enhances its interception effect on the flue gas.

[0046] To prevent the galvanized sheet from carrying away the flue gas when passing through the outlet 61, a brush seal 611 is installed on the inner wall of the outlet 61. The brush seal 611 is made of silicon carbide ceramic fiber. This sealing structure uses flexible brushes to form a dynamic contact seal with the surface of the galvanized sheet. It can maintain a tight fit without damaging the sheet surface when the sheet passes through. The density of the brushes forms a multi-level flow barrier, which effectively disrupts the airflow channel of the flue gas carried out with the sheet and significantly reduces the escape of the flue gas.

[0047] And please see Figure 12 and Figure 13 Rotating baffles 63 are provided on both the left and right sides of the outlet 61. The rotating baffles 63 are rotatably mounted on the upper end of the conical collection hood 6 via a rotating shaft 631. A rotating gear 632 is installed at the rear end of the rotating shaft 631. The two rotating gears 632 mesh with each other. Through this gear transmission structure, the left and right rotating baffles 63 can rotate in opposite directions under synchronous drive. During the rotation, the rotating baffles 63 continuously fan air towards the outlet 61, guiding and blowing external cold air to the surface area of ​​the galvanized sheet, forming a convection air curtain, effectively suppressing the upward dispersion of flue gas and preventing it from leaking from the outlet 61, thereby further improving the overall sealing performance of the flue gas collection system.

[0048] Please see Figure 3 and Figure 13To achieve horizontal rotation of the flue gas collection tank 4, an external gear ring 46 is fixedly fitted onto the upper end of the flue gas collection tank 4. A connecting gear 461 meshes with the rear side of the external gear ring 46. When the connecting gear 461 rotates, it can drive the entire flue gas collection tank 4 to rotate synchronously through meshing with the external gear ring 46, thereby achieving dynamic capture of flue gas around the galvanized plate. At the same time, to achieve rotation of the rotating baffle 63, a bevel gear 462 is installed on the upper end of the connecting gear 461. A bevel gear 463 meshes with the bevel gear 462. One side of bevel gear 463 is fixedly connected to the corresponding rotating gear 632, and the other side of bevel gear 463 is connected to the output shaft of drive motor 464. During operation, drive motor 464 starts and drives bevel gear 463 to rotate. Bevel gear 463 causes bevel gear 462 and the connecting gear 461 linked with it to rotate synchronously through meshing transmission. Among them, bevel gear 462 is used to drive connecting gear 461 to drive flue gas collection tank 4 to rotate, while rotating gear 632 is used to drive rotating baffle 63 to achieve opposite rotation.

[0049] Please see Figure 3 In order to achieve the reciprocating up and down movement of the conical collection hood 6, an installation ring 7 is fixedly fitted on the outside of the conical collection hood 6 and rotatedly connected to the flue gas collection tank 4, so that the conical collection hood 6 does not affect the rotation function of the flue gas collection tank 4 during the movement. A push plate 71 is installed at the rear end of the installation ring 7, and the lower end of the push plate 71 is connected to the output end of the cylinder 72. The cylinder 72 is mounted on the flue gas collection device 3 located on the rear side of the flue gas collection tank 4 through a support. During operation, the cylinder 72 drives the push plate 71 to move up and down, thereby driving the conical collection hood 6 and the flue gas collection tank 4 to move up and down synchronously, realizing the dynamic adjustment of the flue gas collection area.

[0050] Please see Figure 3 and Figure 13 To ensure the operational stability of the conical collection hood 6 and the flue gas collection tank 4 during movement, the drive motor 464 slides vertically with the flue gas collection device 3 through the mounting bracket 47. The rotating gear 632, bevel gear one 462, and bevel gear two 463 are all rotatably connected to the mounting bracket 47. The push plate 71 slides vertically with the guide rail 711 installed on the flue gas collection device 3, providing reliable guiding support during the up-and-down movement, effectively improving the overall stability and reliability of the movement of the conical collection hood 6 and the flue gas collection tank 4.

[0051] Additionally, please see Figure 3The mounting ring 7 is fixedly connected to the elliptical fixing frame 5, so that the elliptical fixing frame 5 remains relatively stationary during the rotation of the flue gas collection tank 4. The upper end of the gas collection hood 1 is equipped with support rods 73 evenly distributed around the circumference of the flue gas collection tank 4. The upper end of the support rods 73 is equipped with guide posts 731. The outer side of the mounting ring 7 is equipped with a side plate 732 that slides up and down with the guide posts 731, so that the mounting ring 7 can move smoothly along the axial direction of the guide posts 731. This provides a reliable guiding effect for the overall lifting and lowering movement of the mounting ring 7 and the conical collection hood 6 and the flue gas collection tank 4 it carries. At the same time, a connecting spring 733 sleeved on the outside of the guide post 731 is connected between the side plate 732 and the support rod 73. This provides elastic buffering force during the up and down movement of the mounting ring 7. When the conical collection hood 6 and the flue gas collection tank 4 move up and down, the mounting ring 7 moves synchronously and achieves stable guidance and buffer protection under the joint action of the guide post 731 and the connecting spring 733.

[0052] In practical use (during operation), during the galvanized sheet immersion in the hot-dip galvanizing bath 2 for coating, the flue gas collection device 3 is activated simultaneously. The gas collection hood 1 initially collects the zinc fumes generated during the galvanizing process. When the galvanized sheet completes galvanizing and is drawn out of the hot-dip galvanizing bath 2, the fumes attached to its surface are captured by the flue gas collection tank 4 and the conical collection hood 6 located above, achieving continuous and efficient treatment of the fumes. At the same time, the drive motor 464 drives the flue gas collection tank 4 to rotate around the galvanized sheet through a gear transmission mechanism, so that the flue gas collection area dynamically covers the galvanized sheet, improving the flue gas capture effect. During this process, the telescopic spiral assembly rotates synchronously with the flue gas collection tank 4 and achieves reciprocating telescopic action under the linkage of the control rod 442 and the elliptical fixing frame 5, thereby continuously and dynamically adsorbing the fumes and enhancing the flue gas collection capacity. In addition, the cylinder 72 can drive the conical collection hood 6 and the flue gas collection tank 4 to move up and down in the vertical direction, further expanding the flue gas collection range and improving the flue gas collection and purification efficiency.

[0053] 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.

[0054] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A fume collecting and treating device for a galvanized sheet production line, characterized in that, The utility model relates to a kind of smoke collection equipment, including: Gas hood (1); Flue gas collection tank (4), the flue gas collection tank (4) is set above gas hood (1), flue gas collection tank (4) can be actively rotated, for collecting galvanized sheet when leaving hot galvanizing pool (2) the flue gas carried out; Telescopic screw assembly, the telescopic screw assembly is set in the inner wall of flue gas collection tank (4), telescopic screw assembly includes helical blade (45), for the flue gas generated on the surface of galvanized sheet is effectively guided and rapidly discharged to flue gas collection area; Control rod (442), the control rod (442) is connected with telescopic screw assembly, control rod (442) can control the working length of telescopic screw assembly, make it contract when being close to the narrow edge surface of galvanized sheet, expand when wide edge surface; Conical collection cover (6), the conical collection cover (6) is set above flue gas collection tank (4), can reciprocate up and down; The telescopic screw assembly further includes sequentially nested primary sleeve (42), secondary sleeve (43) and tertiary sleeve (44), three coaxial arrangements and can slide and rotate relatively, primary sleeve (42) is rotatably installed in the side wall of flue gas collection tank (4), the outer wall of tertiary sleeve (44) is installed with cooperation column one (441), the secondary sleeve (43) is opened with the helical through slot one (431) of the sliding cooperation of cooperation column one (441) on the corresponding, the outer wall of secondary sleeve (43) is installed with cooperation column two (432), the primary sleeve (42) is opened with the helical through slot two (421) of the sliding cooperation of cooperation column two (432) on the corresponding, the outer portion of primary sleeve (42), secondary sleeve (43) and tertiary sleeve (44) is fixedly sleeved with helical blade (45); The control rod (442) is rotatably installed in the inner wall of tertiary sleeve (44), and is movably cooperated with primary sleeve (42), the outside of flue gas collection tank (4) is equipped with oval fixed frame (5), and the end of control rod (442) away from the axis of flue gas collection tank (4) is slidably connected with oval fixed frame (5) by moving column; The upper end of flue gas collection tank (4) is fixedly sleeved with outer gear ring (46), the rear side of outer gear ring (46) is engaged with connecting gear (461), the upper end of connecting gear (461) is installed with bevel gear one (462), bevel gear one (462) is engaged with bevel gear two (463), and one side of bevel gear two (463) is connected with the output shaft of driving motor (464); The outside of conical collection cover (6) is fixedly sleeved with mounting ring (7) rotatably connected with flue gas collection tank (4), mounting ring (7) rear end is installed with push plate (71), and the lower end of push plate (71) is connected with the output end of pneumatic cylinder (72), and pneumatic cylinder (72) is installed on the flue gas collection equipment (3) located at the rear side of flue gas collection tank (4) by support, and pneumatic cylinder (72) can drive conical collection cover (6) and flue gas collection tank (4) reciprocate up and down along vertical direction as a whole; The driving motor (464) is slidably connected with the flue gas collecting device (3) through the mounting bracket (47), the bevel gear one (462) and the bevel gear two (463) are rotatably connected with the mounting bracket (47), and the push plate (71) is slidably connected with the guide rail (711) mounted on the flue gas collecting device (3).

2. The fume collecting and treating device for a galvanized sheet production line according to claim 1, characterized in that: The conical collecting cover (6) is internally provided with two groups of left and right distributed baffle assemblies, the baffle assembly comprises a plurality of baffles (62) distributed upwards and downwards, the conical collecting cover (6) is internally provided with an inclined rod (622) slidably connected with the plurality of baffles (62), and the adjacent baffles (62) are connected with inclined springs (623) sleeved on the inclined rod (622).

3. The fume collecting and treating device for a galvanized sheet production line according to claim 1, characterized in that: The conical collecting cover (6) is internally provided with an inclined rod (622) slidably connected with the plurality of baffles (62), and the adjacent baffles (62) are connected with inclined springs (623) sleeved on the inclined rod (622).

4. The fume collecting and treating device for a galvanized sheet production line according to claim 3, characterized in that: The conical collecting cover (6) is internally provided with an inclined rod (622) slidably connected with the plurality of baffles (62), and the adjacent baffles (62) are connected with inclined springs (623) sleeved on the inclined rod (622).

5. The fume collecting and treating device for a galvanized sheet production line according to claim 1, characterized in that: The mounting ring (7) is fixedly connected with the oval fixing frame (5), the gas collecting cover (1) is provided with a plurality of support rods (73) evenly distributed in the circumferential direction of the flue gas collecting tank (4) and mounted on the upper end of the gas collecting cover (1), the support rods (73) are provided with guide columns (731) mounted on the upper ends of the support rods (73), the mounting ring (7) is provided with side plates (732) slidably connected with the guide columns (731) on the outer side of the mounting ring (7), and the side plates (732) are connected with the support rods (73) and provided with connecting springs (733) sleeved on the outer side of the guide columns (731).

6. The fume collecting and treating device for a galvanized sheet production line according to claim 2, characterized in that: The spiral blades (45) are provided with air passing holes (451), and the baffles (62) are provided with air passing holes (621).

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