A furnace door sealing system

Abstract

This application discloses a furnace door sealing system for sealing furnace doors. The furnace door is vertically and flexibly installed at the inlet and outlet of the furnace body. An internal track is provided inside the furnace body. The furnace door sealing system includes an upper pressing unit, a lower pressing unit, a side pressing unit, and a movable track unit. The furnace door sealing system has an open state and a closed state. In the open state, the upper pressing unit, the lower pressing unit, and the side pressing unit release the furnace door, and the furnace door rises to open the inlet and outlet. The movable track engages with the external track and the internal track to ensure the stability of material feeding and discharging during continuous operation. In the closed state, the movable track retracts to avoid the furnace door, so that the furnace door descends and resets to ensure sealing performance. The upper pressing unit, the lower pressing unit, and the side pressing unit press the furnace door to improve the sealing performance of the furnace door by pressing it from all sides. By switching between the avoidance and engagement states of the movable track, the sealing performance of the furnace door during continuous operation is achieved.

Description

Technical Field

[0001] This application relates to the field of heating furnace technology, and more specifically, to a furnace door sealing system. Background Technology

[0002] Vertical pusher furnaces are pre-processing equipment used for hot continuous rolling of large-size flat ingots. They are continuous industrial furnaces with one furnace door at the head and one at the tail for feeding and discharging. During feeding and discharging, due to the continuous production method, the furnace doors need to be opened and closed frequently to ensure their sealing performance. However, since it is a continuous furnace operation, the connection between the internal and external tracks needs to be as close as possible to ensure the stability of feeding and discharging. Since the lifting furnace door is located between the internal and external tracks, in the current traditional solution, if the two tracks give way to the furnace door, the track connection span will be too large, causing the pushing to get stuck. If the furnace door is provided with a track clearance gap, it will affect the furnace door sealing, causing air or fire leakage, resulting in poor furnace door sealing.

[0003] In conclusion, ensuring the sealing performance of the furnace door during continuous operation is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a furnace door sealing system that ensures the sealing performance of the furnace door during continuous operation.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A furnace door sealing system is disclosed for sealing a furnace door. The furnace door is vertically and flexibly mounted at the inlet / outlet of the furnace body. An internal track is provided within the furnace body. The furnace door sealing system includes: an upper pressing unit mounted on the furnace body at the top of the furnace door, capable of pressing or releasing the furnace door; a lower pressing unit mounted on the furnace body at the bottom of the furnace door, also capable of pressing or releasing the furnace door; and side pressing units mounted on the furnace body on both sides of the furnace door, capable of pressing or releasing the furnace door. The movable track unit includes an external track, a movable track, and a track drive assembly. The track drive assembly drives the movable track to retract to avoid the furnace door or to extend and engage with the internal track. The furnace door sealing system includes an open state and a closed state. In the open state, the upper clamping unit, the lower clamping unit, and the side clamping unit release the furnace door, the furnace door rises, and the track drive assembly drives the movable track to engage with the external track and the internal track. In the closed state, the track drive assembly drives the movable track to retract to avoid the furnace door, the furnace door resets, and the upper clamping unit, the lower clamping unit, and the side clamping unit press against the furnace door.

[0007] In some embodiments, the movable track unit further includes a support frame for supporting the external track, which is rotatably engaged with the movable track. The track drive assembly includes a first drive member, the fixed end of which is rotatably connected to the support frame, the drive end of which is rotatably connected to a first end of a first transmission rod, the second end of which is rotatably connected to a first end of a second transmission rod, and the second end of which is rotatably connected to the end of the movable track away from the external track. In the open state, the first drive member extends and drives the first transmission rod to rotate towards the furnace body, and the first transmission rod drives the second transmission rod to drive the movable track to rotate synchronously towards the furnace body, so that the movable track is horizontal to align with the internal track and the external track. In the closed state, the first drive member retracts and drives the first transmission rod to rotate away from the furnace body, and the first transmission rod drives the second transmission rod to drive the movable track to rotate synchronously away from the furnace body, so that the movable track and the external track have an angle to avoid the furnace door.

[0008] In some embodiments, the furnace door includes a furnace door body and a pressing part disposed around the furnace door body. The pressing part includes a pressing groove and a pressing block. The upper pressing unit, the lower pressing unit, and the side pressing unit can all be inserted into the pressing groove and press against the pressing block to achieve pressing and sealing of the furnace door.

[0009] In some embodiments, the clamping part includes a first clamping part located at the top of the furnace door body, the first clamping part being used to cooperate with the upper clamping unit, the first clamping part including a first clamping groove and a first clamping block; the upper clamping unit includes: a fixing plate, the fixing plate being fixedly installed on the furnace body and located on both sides of the furnace door; a second driving member, the second driving member being fixedly installed on the fixing plate, the driving end of the second driving member being tractively connected to a driving rack; a first gear, the first gear meshing with the driving rack; a second gear, the second gear meshing with the first gear, the second gear being tractively connected to a first drive shaft, the first drive shaft being tractively connected to a second drive shaft; a first swing arm, the first swing arm being fixedly connected to the second drive shaft, the end of the first swing arm away from the second drive shaft being provided with a first... In the open state, the second driving member extends and drives the driving rack to move downward. The driving rack drives the first gear to rotate, the first gear drives the second gear to rotate, and the second gear drives the first transmission shaft and the second transmission shaft to rotate synchronously. This drives the first swing arm away from the first pressing groove through the second transmission shaft, thereby releasing the first pressing part. In the closed state, the second driving member retracts and drives the driving rack to move upward. The driving rack drives the first gear to rotate, the first gear drives the second gear to rotate, and the second gear drives the first transmission shaft and the second transmission shaft to rotate synchronously. This drives the first swing arm to rotate toward the first pressing groove through the second transmission shaft, causing the first pressing roller to abut against the first pressing block, thereby pressing the first pressing part.

[0010] In some embodiments, the second gear is keyed to the first drive shaft, and the first drive shaft and the second drive shaft are connected by a coupling.

[0011] In some embodiments, the clamping part includes a second clamping part located at the bottom end of the furnace door body, the second clamping part being used to cooperate with the lower clamping unit, the second clamping part including a second clamping groove and a second clamping block; the lower clamping unit includes: a first mounting base, the first mounting base being fixedly mounted on the furnace body, the first mounting base being rotatably connected to a third driving member; a second mounting base, the second mounting base being fixedly mounted on the furnace body, the second mounting base being located above the first mounting base; a second swing arm, the second swing arm having a triangular structure, the first end of the second swing arm being rotatably connected to the driving end of the third driving member, the second swing arm... The second swing arm is rotatably connected to the second mounting base at both ends. A second pressing roller is provided at the third end of the second swing arm. The second pressing roller is used to engage with the second pressing groove and press against the second pressing block. In the open state, the third driving member retracts to drive the second swing arm to rotate away from the furnace body, so that the second pressing roller moves away from the second pressing groove to release the second pressing part. In the closed state, the third driving member extends to drive the second swing arm to rotate closer to the furnace body, so that the second pressing roller engages with the second pressing groove and abuts against the second pressing block to press the second pressing part.

[0012] In some embodiments, the furnace door further includes a furnace door sealing unit; the furnace door sealing unit includes: a furnace door steel structure located on the outer layer of the furnace door body, the pressing part being disposed on the furnace door steel structure; an insulation layer disposed on the inner layer of the furnace door steel structure, the inner layer of the insulation layer being provided with fiber cloth, the insulation layer and the fiber cloth being fixed to the furnace door steel structure by insulation nails; a folding sealing assembly adjustablely disposed on the furnace door steel structure, the folding sealing assembly being used to seal the furnace door body; and a sealing rope assembly adjustablely disposed on the furnace door steel structure, the sealing rope assembly being used to seal with a round steel bar disposed on the furnace body.

[0013] In some embodiments, the folding sealing assembly includes: an aluminum silicate fiber blanket located in the inner layer of the furnace door steel structure; a folding sealing block disposed in the inner layer of the aluminum silicate fiber blanket, the folding sealing block being fixedly connected to a first adjusting plate; a first adjusting screw passing sequentially through the furnace door steel structure and the aluminum silicate fiber blanket and rotatably engaging with the first adjusting plate; a first adjusting nut fixedly connected to the furnace door steel structure and threadedly engaging with the first adjusting screw; and a first fixing nut threadedly engaging with the first adjusting screw and used to abut against the first adjusting nut.

[0014] In some embodiments, the sealing rope assembly includes: a sealing rope body located within the inner layer of the furnace door steel structure, the sealing rope body abutting and sealing against the round steel, and a second adjusting plate fixedly connected to the sealing rope body; a second adjusting screw passing through the furnace door steel structure and rotatably engaging with the second adjusting plate; a second adjusting nut fixedly connected to the furnace door steel structure and threadedly engaging with the second adjusting screw; a second fixing nut threadedly engaging with the second adjusting screw and abutting against the second adjusting nut; and a fixing screw for detachably fixing the furnace door steel structure to the sealing rope body.

[0015] In some embodiments, there are two upper pressing units, which are symmetrically arranged on both sides of the movable track unit; there are two lower pressing units, which are symmetrically arranged on both sides of the movable track unit; the upper pressing units and the lower pressing units correspond one-to-one.

[0016] The furnace door sealing system provided in this application is used to seal the furnace door. The furnace door is vertically and flexibly installed at the inlet and outlet of the furnace body. An internal track is provided inside the furnace body. The furnace door sealing system includes an upper pressing unit, a lower pressing unit, a side pressing unit, and a movable track unit. The upper pressing unit is installed on the furnace body and located at the top of the furnace door, and the upper pressing unit can press or release the furnace door. The lower pressing unit is installed on the furnace body and located at the bottom of the furnace door, and the lower pressing unit can press or release the furnace door. The side pressing units are installed on the furnace body and located on both sides of the furnace door, and the side pressing units can press or release the furnace door. The movable track includes an external track, a movable track, and a track drive assembly. The track drive assembly is used to drive the movable track to retract to avoid the furnace door or unfold to connect with the internal track.

[0017] The furnace door sealing system includes an open state and a closed state. In the open state, the upper clamping unit, lower clamping unit, and side clamping unit all release the furnace door, raising it to open the inlet and outlet. The track drive assembly drives the movable track to engage with the external and internal tracks of the furnace, ensuring the stability of material feeding and discharging during continuous operation. In the closed state, the track drive assembly drives the movable track to retract and avoid the furnace door, allowing the furnace door to descend and reset, ensuring sealing performance. The upper clamping unit, lower clamping unit, and side clamping unit then press the furnace door shut, further enhancing its sealing performance by pressing it from all sides. Thus, by switching between the avoidance and engagement states of the movable track, the stability of material feeding and discharging and the sealing performance of the furnace door are ensured during continuous operation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the furnace door sealing system provided in an embodiment of this application;

[0020] Figure 2 A schematic diagram showing the closed state of the furnace door sealing system provided in an embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the furnace door sealing system provided in the embodiment of this application in the open state and the moving track in the avoidance state;

[0022] Figure 4 This is a schematic diagram showing the furnace door sealing system in the open state and the moving track in the docking state according to an embodiment of this application;

[0023] Figure 5 This is a schematic diagram of the upper pressing unit in the furnace door sealing system provided in the embodiments of this application;

[0024] Figure 6 This is a schematic diagram of the internal structure of the upper pressing unit in the furnace door sealing system provided in the embodiments of this application;

[0025] Figure 7 A schematic diagram showing the pressing and releasing states of the upper pressing unit in the furnace door sealing system provided in this application embodiment;

[0026] Figure 8 A schematic diagram of the pressing state of the lower pressing unit in the furnace door sealing system provided in the embodiments of this application;

[0027] Figure 9 A schematic diagram of the lower pressing unit in the furnace door sealing system provided in this application embodiment, showing the release state of the unit.

[0028] Figure 10 This is a schematic diagram of the structure of the furnace door sealing unit in the furnace door sealing system provided in the embodiments of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100-Furnace door, 110-Furnace door body, 120-First pressing part, 121-First pressing groove, 122-First pressing block, 130-Second pressing part, 131-Second pressing groove, 132-Second pressing block;

[0031] 200 - Furnace body, 210 - Furnace internal track, 220 - Round steel;

[0032] 300 - Upper clamping unit, 310 - Fixed plate, 320 - Second driving component, 330 - Driving rack, 340 - First gear, 350 - Second gear, 360 - First transmission shaft, 370 - Second transmission shaft, 380 - First swing arm, 381 - First clamping roller, 390 - Coupling;

[0033] 400 - Lower clamping unit, 410 - First mounting base, 420 - Third driving component, 430 - Second mounting base, 440 - Second swing arm, 441 - Second clamping roller;

[0034] 500-Side clamping unit;

[0035] 600-Movable track unit, 610-External track, 620-Movable track, 630-Support frame, 641-First driving component, 642-First transmission rod, 643-Second transmission rod;

[0036] 710 - Furnace door steel structure, 720 - Insulation layer, 730 - Fiber cloth, 740 - Insulation nail, 751 - Alumina silicate fiber blanket, 752 - Folding sealing block, 753 - First adjusting plate, 754 - First adjusting screw, 755 - First adjusting nut, 756 - First fixing nut, 761 - Sealing rope body, 762 - Second adjusting screw, 763 - Second adjusting nut, 764 - Second fixing nut, 765 - Fixing screw, 766 - Second adjusting plate. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The terminology used in the following embodiments is for the purpose of describing specific embodiments only and is not intended to be a limitation of this application. As used in the specification and appended claims of this application, the singular expressions "a," "an," "the," "the," "the," and "this" are intended to also include expressions such as "one or more," unless the context clearly indicates otherwise. It should also be understood that in the embodiments of this application, "one or more" refers to one, two, or more; "and / or" describes the relationship between related objects, indicating that three relationships may exist; for example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0039] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0040] The "multiple" mentioned in the embodiments of this application refers to two or more. It should be noted that in the description of the embodiments of this application, terms such as "first" and "second" are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0041] like Figure 1 As shown in the embodiment of this application, the furnace door sealing system is used to seal the furnace door 100. The furnace door 100 is vertically and flexibly installed at the inlet and outlet of the furnace body 200, and an internal track 210 is provided inside the furnace body 200. The furnace door sealing system includes an upper pressing unit 300, a lower pressing unit 400, a side pressing unit 500, and a movable track unit 600.

[0042] like Figure 1As shown, the upper clamping unit 300 is disposed on the furnace body 200, located at the top of the furnace door 100, and capable of clamping or releasing the furnace door 100; the lower clamping unit 400 is disposed on the furnace body 200, located at the bottom of the furnace door 100, and capable of clamping or releasing the furnace door 100; the side clamping units 500 are disposed on the furnace body 200, located on both sides of the furnace door 100, and... The side clamping unit 500 can clamp or release the furnace door 100. By using the upper clamping unit 300, the lower clamping unit 400 and the side clamping unit 500, the furnace door 100 can be clamped around its entire circumference. For the ultra-wide furnace door structure, the clamping of the entire circumference can apply a uniform clamping force, reduce the degree of thermal deformation of the ultra-wide furnace door at high temperature, ensure the clamping effect of the furnace door 100, improve the sealing performance of the furnace door 100, and ensure the uniformity of the temperature field inside the furnace body 200.

[0043] like Figures 1-4 As shown, the movable track unit 600 includes an external track 610, a movable track 620, and a track drive assembly. The track drive assembly can drive the movable track 620 to retract to avoid the furnace door 100 or to extend to connect with the internal track 210 and the external track 610. During the feeding and discharging process, the movable track 620 can extend to connect with the internal track 210 and the external track 610 to ensure the stability and smoothness of feeding and discharging. After feeding and discharging is completed, the movable track 620 retracts to avoid the furnace door 100 to ensure that the furnace door 100 achieves a complete seal without gaps, thus ensuring the sealing effect of the furnace door 100.

[0044] The furnace door sealing system includes an open state and a closed state. In the open state, the upper pressing unit 300, the lower pressing unit 400 and the side pressing unit 500 all release the furnace door 100, so that the furnace door 100 is raised to open the inlet and outlet ports, and the track drive assembly drives the movable track 620 to unfold and connect with the external track 610 and the internal track 210 to ensure the stability and smoothness of material feeding and discharging.

[0045] In the closed state, the track drive assembly drives the movable track 620 to retract and avoid the furnace door 100, so that the furnace door 100 descends and resets, ensuring the complete seal of the furnace door 100. The upper pressing unit 300, the lower pressing unit 400 and the side pressing unit 500 all press the furnace door 100 to achieve full circumferential pressing of the furnace door 100, thereby improving the sealing performance of the furnace door 100 and ensuring the stability of material feeding and discharging and the sealing performance of the furnace door 100 during continuous operation.

[0046] like Figures 3-4As shown, the movable track unit 600 also includes a support frame 630, which supports the external track 610 to ensure the stable fixation of the external track 610. The external track 610 and the movable track 620 are rotated together by a rotating shaft to realize the unfolding and retraction of the movable track 620.

[0047] The track drive assembly includes a first drive member 641, the fixed end of which is rotatably connected to a support frame 630. Specifically, a support is provided on the support frame 630 for rotatably engaging with the first drive member 641. The drive end of the first drive member 641 is rotatably connected to the first end of a first transmission rod 642, and the second end of the first transmission rod 642 is rotatably connected to the first end of a second transmission rod 643. The second end of the second transmission rod 643 is rotatably connected to the end of the movable track 620 away from the furnace outer track 610, so that the movable track 620 can be driven to unfold and retract by the extension and retraction of the first drive member 641 through the first transmission rod 642 and the second transmission rod 643.

[0048] Specifically, in the on state, such as Figure 4 As shown, the driving end of the first driving member 641 extends, driving the first end of the first transmission rod 642 to move towards the furnace body 200. The second end of the first transmission rod 642 moves synchronously, thereby pushing the first end of the second transmission rod 643 to move towards the furnace body 200. The second end of the second transmission rod 643 drives the movable track 620 to rotate around its rotational connection point with the external track 610 towards the furnace body 200 until the movable track 620 is in a horizontal state, so that the two ends of the movable track 620 are connected to the internal track 210 and the external track 610 to ensure the smooth conveying of materials.

[0049] When closed, the drive end of the first drive member 641 retracts, driving the first end of the first transmission rod 642 to move away from the furnace body 200. The second end of the first transmission rod 642 moves synchronously, thereby pulling the first end of the second transmission rod 643 to move away from the furnace body 200. The second end of the second transmission rod 643 drives the movable track 620 to rotate around its rotation connection point with the external track 610 away from the furnace body 200, so that the movable track 620 and the external track 610 form an angle. The movable track 620 retracts as a whole to make room for the furnace door 100 to descend and close.

[0050] It should be noted that the first driving component 641 can be any one of a cylinder, hydraulic cylinder, or electric push rod, as long as it can provide linear reciprocating motion to drive the first transmission rod 642. In this embodiment, the first driving component 641 is preferably a cylinder, so as to utilize the on-site air source, which has a simple and reliable structure and is easy to maintain.

[0051] In this application, to facilitate clamping with the upper clamping unit 300, lower clamping unit 400, and side clamping unit 500, the furnace door 100 includes a furnace door body 110 and clamping parts disposed around the furnace door body 110. The clamping parts specifically include clamping grooves and clamping blocks. The clamping grooves extend circumferentially along the furnace door body 110, and the clamping blocks are correspondingly disposed within the clamping grooves. The clamping ends of the upper clamping unit 300, lower clamping unit 400, and side clamping unit 500 can all be engaged in their respective clamping grooves and press against the clamping blocks. Through the clamping force applied by each clamping unit, the furnace door 100 is reliably clamped onto the furnace body 200, thereby achieving a reliable seal on the furnace door 100.

[0052] like Figures 2-3 As shown, the pressing part includes a first pressing part 120 located at the top of the furnace door body 110. The first pressing part 120 is used to cooperate with the upper pressing unit 300. The first pressing part 120 includes a first pressing groove 121 and a first pressing block 122.

[0053] like Figures 5-7 As shown, the upper clamping unit 300 includes a fixed plate 310, a second driving member 320, a driving rack 330, a first gear 340, a second gear 350, a first transmission shaft 360, a second transmission shaft 370, a first swing arm 380, and a first clamping roller 381.

[0054] The fixing plate 310 is fixedly installed on the furnace body 200 and is located on the left and right sides of the furnace door 100. It is used to provide an installation base for other components of the upper pressing unit 300. The second driving component 320 is fixedly installed on the fixing plate 310. The driving end of the second driving component 320 is connected to the driving rack 330. The second driving component 320 is used to provide the driving force required for the upper pressing unit 300 to operate. Specifically, the second driving component 320 can be any one of a cylinder, a hydraulic cylinder, or an electric push rod. In this embodiment, a cylinder is preferred to adapt to the on-site air source, and the structure is simple and the operation is reliable.

[0055] The first gear 340 meshes with the drive rack 330 for transmission. The linear reciprocating motion of the drive rack 330 can drive the first gear 340 to rotate in both directions. The second gear 350 meshes with the first gear 340 for transmission. The second gear 350 is connected to the first drive shaft 360, and the first drive shaft 360 is connected to the second drive shaft 370. Through the meshing of the first gear 340 and the second gear 350, the linear motion of the second drive member 320 is converted into rotational motion, and the rotational power is transmitted to the first swing arm 380 through the first drive shaft 360 and the second drive shaft 370 for pressing or releasing the first pressing part 120.

[0056] The first swing arm 380 is fixedly connected to the second drive shaft 370. The end of the first swing arm 380 away from the second drive shaft 370 is provided with a first pressing roller 381. The first pressing roller 381 is used to engage in the first pressing groove 121 and to press against the first pressing block 122 to transmit the pressing force applied by the upper pressing unit 300. Through the rolling contact between the first pressing roller 381 and the first pressing block 122, frictional resistance can be reduced during the pressing and releasing process, wear can be reduced, and the service life and operational reliability of the mechanism can be improved.

[0057] When the furnace door 100 is open, the drive end of the second drive member 320 extends, driving the drive rack 330 to move downward. The drive rack 330 drives the first gear 340 to rotate, and the first gear 340 drives the second gear 350 to rotate. The second gear 350 drives the first transmission shaft 360 and the second transmission shaft 370 to rotate synchronously. The second transmission shaft 370 drives the first swing arm 380 to swing away from the first pressing groove 121, so that the first pressing roller 381 leaves the first pressing block 122 and disengages from the first pressing part 120, thereby releasing the furnace door 100 so that the furnace door 100 can be smoothly raised and opened.

[0058] Furthermore, such as Figure 7 As shown, the first swing arm 380 can rotate to avoid the furnace door 100, so as to ensure that the furnace door 100 can carry out normal lifting and lowering operations.

[0059] When closed, the furnace door 100 needs to be pressed tightly. The driving end of the second driving member 320 retracts, driving the driving rack 330 to move upward. The driving rack 330 drives the first gear 340 to rotate, and the first gear 340 drives the second gear 350 to rotate. The second gear 350 drives the first transmission shaft 360 and the second transmission shaft 370 to rotate synchronously. The second transmission shaft 370 drives the first swing arm 380 to swing towards the first pressing groove 121, so that the first pressing roller 381 is engaged in the first pressing groove 121 and abuts against the first pressing block 122, applying a pressing force towards the furnace body 200 to the furnace door 100, thereby firmly pressing the furnace door 100 and achieving a seal.

[0060] In this application, such as Figures 5-7As shown, to ensure the reliability of the transmission system connection and the accuracy of power transmission in the upper clamping unit 300, the second gear 350 and the first transmission shaft 360 are connected by a key to ensure stable power transmission between the second gear 350 and the first transmission shaft 360. The first transmission shaft 360 and the second transmission shaft 370 are connected by a coupling 390, which can compensate for possible axial, radial or angular deviations between the first transmission shaft 360 and the second transmission shaft 370 during installation. The power can be smoothly transmitted from the first transmission shaft 360 to the second transmission shaft 370 through the transmission method of the coupling 390, ensuring the stability of the clamping force of the first clamping roller 381 in the upper clamping unit 300.

[0061] like Figures 2-3 As shown, the pressing part includes a second pressing part 130 located at the bottom end of the furnace door body 110. The second pressing part 130 is used to cooperate with the lower pressing unit 400. The second pressing part 130 includes a second pressing groove 131 and a second pressing block 132.

[0062] like Figures 8-9 As shown, the lower clamping unit 400 includes a first mounting base 410, a third driving member 420, a second mounting base 430, a second swing arm 440, and a second clamping roller 441.

[0063] The first mounting base 410 is fixedly mounted on the furnace body 200. The first mounting base 410 is used to provide a mounting foundation for the third driving component 420. The fixed end of the third driving component 420 is rotatably connected to the first mounting base 410, so that the third driving component 420 can swing around the connection point during operation to adapt to the movement trajectory of the second swing arm 440. Specifically, the third driving component 420 can be any one of a cylinder, a hydraulic cylinder, or an electric push rod. In this embodiment, a cylinder is preferred to adapt to the on-site air source, and the structure is simple and the operation is reliable.

[0064] The second mounting base 430 is fixedly mounted on the furnace body 200 and is located above the first mounting base 410. The second mounting base 430 is used to provide a fixed hinge point for the second swing arm 440. The second swing arm 440 has a triangular structure with a first end, a second end and a third end. The first end of the second swing arm 440 is rotatably connected to the driving end of the third driving member 420, and the second end of the second swing arm 440 is rotatably connected to the second mounting base 430. The third end of the second swing arm 440 is provided with a second pressing roller 441. The second pressing roller 441 is used to engage in the second pressing groove 131 and press against the second pressing block 132 to transmit the pressing force applied by the lower pressing unit 400 to the bottom end of the furnace door 100.

[0065] When the furnace door 100 is open, the drive end of the third drive member 420 retracts, driving the first end of the second swing arm 440 to move away from the furnace body 200. Since the second end of the second swing arm 440 is rotatably connected to the second mounting base 430 to form a fixed hinge point, the second swing arm 440 rotates around its second end in a direction away from the furnace body 200, causing the second pressing roller 441 at the third end of the second swing arm 440 to move away from the second pressing groove 131 and disengage from the contact with the second pressing block 132, thereby releasing the second pressing part 130 so that the furnace door 100 can be smoothly raised and opened.

[0066] When closed, the furnace door 100 needs to be pressed tightly. The driving end of the third driving member 420 extends, driving the first end of the second swing arm 440 to move towards the furnace body 200. Since the second end of the second swing arm 440 is rotatably connected to the second mounting base 430 to form a fixed hinge point, the second swing arm 440 rotates around its second end towards the furnace body 200, causing the second pressing roller 441 at the third end of the second swing arm 440 to engage with the second pressing groove 131 and abut against the second pressing block 132, applying a pressing force towards the furnace body 200 to the furnace door 100, thereby firmly pressing the bottom end of the furnace door 100 to achieve a seal.

[0067] Because high-temperature operation can cause local thermal deformation of the furnace door 100 during actual operation, in order to compensate for the deformation and ensure the sealing effect of the furnace door 100, the furnace door 100 in this application also includes a furnace door sealing unit.

[0068] like Figure 10 As shown, the furnace door sealing unit includes a furnace door steel structure 710, an insulation layer 720, a fiber cloth 730, insulation nails 740, a folding sealing assembly, and a sealing rope assembly.

[0069] The furnace door steel structure 710 is located on the outer layer of the furnace door body 110, serving as the overall load-bearing frame of the furnace door 100. It provides the installation foundation for the insulation layer 720, the folding sealing assembly, and the sealing rope assembly. The furnace door steel structure 710 is welded from high-temperature resistant steel, possessing sufficient rigidity and strength, and can work stably for a long time in a high-temperature environment of 400-600℃, resisting the adverse effects of thermal deformation on sealing performance. Each pressing groove and each pressing block in the aforementioned pressing part are directly set on the furnace door steel structure 710, so that the pressing force applied by the upper pressing unit 300 and the lower pressing unit 400 can be evenly transmitted to the furnace door 100 through the furnace door steel structure 710.

[0070] The insulation layer 720 is set in the inner layer of the furnace door steel structure 710. The insulation layer 720 is used to reduce the heat loss from the inside of the furnace body 200 to the outside through the furnace door 100 and to protect the furnace door steel structure 710 from the direct impact of the high temperature in the furnace. The inner layer of the insulation layer 720 is provided with fiber cloth 730. The fiber cloth 730 is used to protect the surface of the insulation layer 720 and prevent the insulation material of the insulation layer 720 from falling off or pulverizing during use. The insulation layer 720 and the fiber cloth 730 are fixed to the furnace door steel structure 710 by multiple insulation nails 740 to achieve reliable fixation of the two.

[0071] The folding sealing assembly is adjustablely installed on the furnace door steel structure 710. The folding sealing assembly is used to seal the gap between the circumferential edge of the furnace door body 110 and the furnace body 200. Since the folding sealing assembly has a certain elasticity and compressibility, it can undergo adaptive deformation when the furnace door 100 is pressed, effectively compensating for the unevenness of the sealing surface caused by high temperature thermal deformation, filling the sealing gap, and ensuring the sealing reliability of the furnace door 100 under high temperature conditions.

[0072] The sealing rope assembly is also adjustablely installed on the furnace door steel structure 710. The sealing rope assembly is used to seal with the round steel 220 installed on the furnace body 200. When the furnace door 100 is closed and pressed, the sealing rope assembly and the round steel 220 abut to form a sealing line.

[0073] like Figure 10 As shown, the folding sealing assembly includes an aluminum silicate fiber blanket 751, a folding sealing block 752, a first adjusting screw 754, a first adjusting nut 755, and a first fixing nut 756.

[0074] Among them, the aluminum silicate fiber blanket 751 is located in the inner layer of the furnace door steel structure 710. The aluminum silicate fiber blanket 751 has good high temperature resistance and flexibility, and can adapt to the deformation when the furnace door 100 is pressed, playing a dual role of auxiliary sealing and heat insulation. The folded sealing block 752 is set in the inner layer of the aluminum silicate fiber blanket 751, so that the aluminum silicate fiber blanket 751 provides a high temperature resistant flexible backing for the folded sealing block 752. The folded sealing block 752 is a flexible sealing body that can deform when the furnace door 100 is pressed to compensate for the sealing gap. The folded sealing block 752 is fixedly connected to the first adjusting plate 753. The first adjusting plate 753 is used to provide rigid support for the folded sealing block 752 and to serve as a transmission component for adjusting force.

[0075] The first adjusting screw 754 passes sequentially through the furnace door steel structure 710 and the aluminum silicate fiber blanket 751, with its end rotatably engaged with the first adjusting plate 753. The first adjusting nut 755 is fixedly connected to the furnace door steel structure 710, for example, by welding it to the outer side of the furnace door steel structure 710. The first adjusting nut 755 is threadedly engaged with the first adjusting screw 754. When the first adjusting screw 754 is rotated, guided by the thread of the first adjusting nut 755, the first adjusting screw 754 drives the first adjusting plate 753 and the folding sealing block 752 to move axially, thereby realizing the position adjustment of the folding sealing block 752 relative to the furnace door steel structure 710. The first fixing nut 756 is threadedly engaged with the first adjusting screw 754 and is used to abut against the first adjusting nut 755, playing a role in locking and preventing loosening.

[0076] Thus, when it is necessary to adjust the sealing position of the folding sealing block 752 to compensate for the gap changes caused by high temperature deformation or long-term wear, the operator can first loosen the first fixing nut 756, and then rotate the first adjusting screw 754. The first adjusting screw 754 drives the first adjusting plate 753 and the folding sealing block 752 to move towards or away from the furnace body 200. After the adjustment is in place, tighten the first fixing nut 756 to press against the first adjusting nut 755, thus completing the precise adjustment of the position of the folding sealing block 752.

[0077] like Figure 10 As shown, the sealing rope assembly includes a sealing rope body 761, a second adjusting screw 762, a second adjusting nut 763, a second fixing nut 764, and a fixing screw 765.

[0078] The sealing rope body 761 is located in the inner layer of the furnace door steel structure 710. The sealing rope body 761 is woven from high-temperature resistant fiber material, possessing good elasticity and high-temperature resistance. When the furnace door 100 is closed and compressed, the sealing rope body 761 abuts against the round steel 220 set on the furnace body 200 to form a sealing line. A second adjusting plate 766 is fixedly connected to the sealing rope body 761. The second adjusting plate provides rigid support for the sealing rope body 761 and serves as a force transmission component for adjustment.

[0079] The second adjusting screw 762 passes through the furnace door steel structure 710, and its end is rotatably engaged with the second adjusting plate. The second adjusting nut 763 is fixedly connected to the furnace door steel structure 710, for example, by welding it to the outer side of the furnace door steel structure 710. The second adjusting nut 763 is threadedly engaged with the second adjusting screw 762. When the second adjusting screw 762 is rotated, guided by the thread of the second adjusting nut 763, the second adjusting screw 762 drives the second adjusting plate and the sealing rope body 761 to move axially, thereby realizing the position adjustment of the sealing rope body 761 relative to the furnace door steel structure 710, and thus adjusting the pressing depth and clamping force between the sealing rope body 761 and the round steel 220. The second fixing nut 764 is threadedly engaged with the second adjusting screw 762 and is used to abut against the second adjusting nut 763, playing a role in locking and preventing loosening.

[0080] The fixing screw 765 is used to detachably fix the furnace door steel structure 710 to the sealing rope body 761.

[0081] When it is necessary to adjust the sealing position of the sealing rope body 761 to compensate for wear or permanent deformation caused by long-term use, the fixing screw 765 can be removed first to loosen the sealing rope body 761 from the furnace door steel structure 710. Then, the second fixing nut 764 can be loosened, and the second adjusting screw 762 can be rotated. The second adjusting screw 762 will drive the second adjusting plate 766 and the sealing rope body 761 to move closer to or further away from the round steel 220 to adjust the pressing depth between the sealing rope body 761 and the round steel 220. After the adjustment is in place, the second fixing nut 764 can be tightened to press against the second adjusting nut 763. Then, the sealing rope body 761 can be re-fixed with the fixing screw 765 to complete the precise adjustment of the position of the sealing rope body 761.

[0082] In this application, in order to improve the pressing and sealing effect of the pressing unit on the furnace door 100, such as Figure 1 As shown, there are two upper clamping units 300, which are symmetrically arranged on the left and right sides of the movable track unit 600; there are also two lower clamping units 400, which are symmetrically arranged on the left and right sides of the movable track unit 600; and the upper clamping units 300 and lower clamping units 400 on the same side correspond one-to-one, forming an upper and lower clamping layout.

[0083] By symmetrically arranging the upper pressing unit 300 and the lower pressing unit 400 on both sides of the movable track unit 600, the furnace door 100 can obtain a balanced pressing force on both sides when it is closed, avoiding tilting or uneven load on the furnace door 100 due to unilateral pressing or uneven pressing force, so as to ensure uniform contact of the sealing surface and achieve reliable circumferential sealing.

[0084] It should be noted that in some practical situations, since the two upper clamping units 300 and the two lower clamping units 400 need to avoid the moving track unit 600, in an embodiment with an overall track width of 2800mm, the distance between the two upper clamping units 300 and the two lower clamping units 400 is selected as 4200mm, taking into account safety space and maintenance space.

[0085] In other practical cases, in embodiments with an overall track width of 2500mm, the distance between the two upper clamping units 300 and the two lower clamping units 400 is selected as 3900mm, taking into account safety and maintenance space.

[0086] It should be noted that, in practice, the furnace door sealing system provided in this application embodiment can be applied to a 510-ton vertical pusher heating furnace, processing flat ingot alloys with a length of 3000-7000mm, a width of 900-1700mm, and a thickness of 300-500mm, with a furnace door 100 having a width of 8000mm and a height of 3200mm; it can also be applied to a 300-ton vertical pusher heating furnace, processing flat ingot alloys with a length of 3000-5000mm, a width of 600-1000mm, and a thickness of 300-500mm, with a furnace door 100 having a width of 6000mm and a height of 3100mm. Thus, it can be seen that the furnace door sealing system provided in this application embodiment has excellent adaptability to working conditions and a wide range of applications, capable of covering vertical pusher heating furnaces of different specifications from 300 tons to 510 tons, and meeting the heating requirements of flat ingot alloys of different sizes.

[0087] The above description of the embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A furnace door sealing system for sealing a furnace door (100), the furnace door (100) being vertically and flexibly disposed at the inlet / outlet of a furnace body (200), the furnace body (200) being provided with an internal track (210), characterized in that, The furnace door sealing system includes: Upper pressing unit (300) is disposed on the furnace body (200), the upper pressing unit (300) is located at the top of the furnace door (100), and the upper pressing unit (300) can press or release the furnace door (100). A lower pressing unit (400) is disposed on the furnace body (200). The lower pressing unit (400) is located at the bottom end of the furnace door (100), and the lower pressing unit (400) can press or release the furnace door (100). Side clamping unit (500) is disposed on the furnace body (200). The side clamping unit (500) is located on both sides of the furnace door (100), and the side clamping unit (500) can clamp or release the furnace door (100). The movable track unit (600) includes an external track (610), a movable track (620), and a track drive assembly. The track drive assembly is used to drive the movable track (620) to retract to avoid the furnace door (100) or to unfold to connect with the internal track (210). The furnace door sealing system includes an open state and a closed state; In the open state, the upper clamping unit (300), the lower clamping unit (400), and the side clamping unit (500) all release the furnace door (100), the furnace door (100) rises, and the track drive assembly drives the movable track (620) to engage with the external track (610) and the internal track (210). In the closed state, the track drive assembly drives the movable track (620) to retract and avoid the furnace door (100), the furnace door (100) resets, and the upper pressing unit (300), the lower pressing unit (400), and the side pressing unit (500) all press the furnace door (100).

2. The furnace door sealing system according to claim 1, characterized in that, The movable track unit (600) also includes a support frame (630) for supporting the external track (610), which is rotatably coupled with the movable track (620). The track drive component includes: A first driving member (641) has a fixed end rotatably connected to the support frame (630). The driving end of the first driving member (641) is rotatably connected to the first end of a first transmission rod (642). The second end of the first transmission rod (642) is rotatably connected to the first end of a second transmission rod (643). The second end of the second transmission rod (643) is rotatably connected to the end of the movable track (620) away from the furnace track (610). In the open state, the first driving member (641) extends and drives the first transmission rod (642) to rotate toward the furnace body (200). The first transmission rod (642) drives the second transmission rod (643) to drive the movable track (620) to rotate synchronously toward the furnace body (200), so that the movable track (620) is in a horizontal state to connect with the inner furnace track (210) and the outer furnace track (610). In the closed state, the first drive member (641) retracts and drives the first transmission rod (642) to rotate away from the furnace body (200). The first transmission rod (642) drives the second transmission rod (643) to drive the movable track (620) to rotate synchronously away from the furnace body (200), so that there is an angle between the movable track (620) and the external track (610) to avoid the furnace door (100).

3. The furnace door sealing system according to claim 1, characterized in that, The furnace door (100) includes a furnace door body (110) and a pressing part disposed around the furnace door body (110). The pressing part includes a pressing groove and a pressing block. The upper pressing unit (300), the lower pressing unit (400), and the side pressing unit (500) can all be inserted into the pressing groove and press against the pressing block to achieve pressing and sealing of the furnace door (100).

4. The furnace door sealing system according to claim 3, characterized in that, The pressing part includes a first pressing part (120) located at the top of the furnace door body (110). The first pressing part (120) is used to cooperate with the upper pressing unit (300). The first pressing part (120) includes a first pressing groove (121) and a first pressing block (122). The upper clamping unit (300) includes: A fixing plate (310) is fixedly installed on the furnace body (200), and the fixing plate (310) is located on both sides of the furnace door (100); The second driving component (320) is fixedly installed on the fixed plate (310), and the driving end of the second driving component (320) is connected to a driving rack (330). The first gear (340) meshes with the drive rack (330) for transmission; The second gear (350) meshes with the first gear (340) for transmission. The second gear (350) is connected to the first transmission shaft (360), and the first transmission shaft (360) is connected to the second transmission shaft (370). A first swing arm (380) is fixedly connected to a second drive shaft (370), and a first pressing roller (381) is provided at one end of the first swing arm (380) away from the second drive shaft (370). In the open state, the second driving member (320) extends and drives the driving rack (330) to move downward. The driving rack (330) drives the first gear (340) to rotate. The first gear (340) drives the second gear (350) to rotate. The second gear (350) drives the first transmission shaft (360) and the second transmission shaft (370) to rotate synchronously, so as to drive the first swing arm (380) away from the first pressing groove (121) through the second transmission shaft (370) to release the first pressing part (120). In the closed state, the second drive member (320) retracts and drives the drive rack (330) to move upward. The drive rack (330) drives the first gear (340) to rotate. The first gear (340) drives the second gear (350) to rotate. The second gear (350) drives the first transmission shaft (360) and the second transmission shaft (370) to rotate synchronously. The second transmission shaft (370) drives the first swing arm (380) to rotate toward the first pressing groove (121), and the first pressing roller (381) abuts against the first pressing block (122) to press the first pressing part (120).

5. The furnace door sealing system according to claim 4, characterized in that, The second gear (350) is keyed to the first drive shaft (360), and the first drive shaft (360) and the second drive shaft (370) are connected by a coupling (390).

6. The furnace door sealing system according to claim 3, characterized in that, The pressing part includes a second pressing part (130) located at the bottom end of the furnace door body (110). The second pressing part (130) is used to cooperate with the lower pressing unit (400). The second pressing part (130) includes a second pressing groove (131) and a second pressing block (132). The lower clamping unit (400) includes: The first mounting base (410) is fixedly mounted on the furnace body (200), and the first mounting base (410) is rotatably connected to the third driving component (420). The second mounting base (430) is fixedly mounted on the furnace body (200) and is located above the first mounting base (410); The second swing arm (440) has a triangular structure. The first end of the second swing arm (440) is rotatably connected to the driving end of the third driving member (420). The second end of the second swing arm (440) is rotatably connected to the second mounting base (430). The third end of the second swing arm (440) is provided with a second pressing roller (441). The second pressing roller (441) is used to engage with the second pressing groove (131) and press against the second pressing block (132). In the open state, the third drive member (420) retracts to drive the second swing arm (440) to rotate away from the furnace body (200), so that the second pressing roller (441) moves away from the second pressing groove (131) to release the second pressing part (130). In the closed state, the third drive member (420) extends to drive the second swing arm (440) to rotate toward the furnace body (200) so that the second pressing roller (441) engages with the second pressing groove (131) and abuts against the second pressing block (132) to press the second pressing part (130).

7. The furnace door sealing system according to claim 3, characterized in that, The furnace door (100) also includes a furnace door sealing unit; The furnace door sealing unit includes: Furnace door steel structure (710), the furnace door steel structure (710) is located on the outer layer of the furnace door body (110), and the pressing part is provided on the furnace door steel structure (710). A heat insulation layer (720) is provided in the inner layer of the furnace door steel structure (710). The inner layer of the heat insulation layer (720) is provided with fiber cloth (730). The heat insulation layer (720) and the fiber cloth (730) are fixed to the furnace door steel structure (710) by heat insulation nails (740). A folding sealing assembly is adjustablely disposed on the furnace door steel structure (710) and is used to seal the furnace door body (110). A sealing rope assembly is adjustablely disposed on the furnace door steel structure (710) and is used to seal against a round steel (220) disposed on the furnace body (200).

8. The furnace door sealing system according to claim 7, characterized in that, The folded sealing assembly includes: Alumina silicate fiber blanket (751) is located in the inner layer of the furnace door steel structure (710); A folding sealing block (752) is disposed in the inner layer of the aluminum silicate fiber blanket (751), and a first adjusting plate (753) is fixedly connected to the folding sealing block (752). The first adjusting screw (754) passes through the furnace door steel structure (710) and the aluminum silicate fiber blanket (751) in sequence and rotates with the first adjusting plate (753); The first adjusting nut (755) is fixedly connected to the furnace door steel structure (710) and threadedly engaged with the first adjusting screw (754); The first fixing nut (756) is threadedly engaged with the first adjusting screw (754) and used to abut against the first adjusting nut (755).

9. The furnace door sealing system according to claim 7, characterized in that, The sealing rope assembly includes: The sealing rope body (761) is located in the inner layer of the furnace door steel structure (710). The sealing rope body (761) abuts and seals with the round steel (220). The sealing rope body (761) is fixedly connected to a second adjusting plate (766). The second adjusting screw (762) passes through the furnace door steel structure (710) and rotates with the second adjusting plate (766); The second adjusting nut (763) is fixedly connected to the furnace door steel structure (710) and threadedly engaged with the second adjusting screw (762); The second fixing nut (764) is threadedly engaged with the second adjusting screw (762) and is used to abut against the second adjusting nut (763); Fixing screws (765) are used to detachably fix the furnace door steel structure (710) to the sealing rope body (761).

10. The furnace door sealing system according to any one of claims 1-9, characterized in that, There are two upper pressing units (300), and the two upper pressing units (300) are symmetrically arranged on both sides of the movable track unit (600); There are two lower pressing units (400), and the two lower pressing units (400) are symmetrically arranged on both sides of the movable track unit (600); The upper pressing unit (300) and the lower pressing unit (400) correspond one-to-one.

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