Cold line preheating section inlet sealing structure

Abstract

The utility model relates to a cold line preheating section inlet sealing structure, and belongs to the technical field of strip steel machining. The sealing device comprises an upper sealing assembly, a lower lifting assembly and a lower sealing assembly, the upper sealing assembly comprises an upper connecting piece and an upper sealing piece, the upper connecting piece is connected with the upper lifting assembly, the upper sealing piece is arranged on the lower side of the upper connecting piece, and the upper lifting assembly drives the upper sealing piece to move vertically; the lower lifting assembly is arranged at the lower end of the cold line preheating section inlet; the lower sealing assembly comprises a lower connecting piece and a lower sealing piece, the lower connecting piece is connected with the upper side of the lower lifting assembly, the lower sealing piece is arranged on the upper side of the lower connecting piece, and the lower lifting assembly drives the lower sealing piece to vertically move; the upper sealing assembly and the lower sealing assembly can move oppositely in the vertical direction, so that the upper sealing piece and the lower sealing piece can abut against each other to be pressed tightly and are used for sealing an inlet of the cold line preheating section, the abutting position of the upper sealing piece and the lower sealing piece is an abutting plane, and the abutting plane extends by a preset length in the strip steel conveying direction. The sealing effect of the inlet of the cold line preheating section can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of strip steel processing, and in particular to an inlet sealing structure of a cold wire preheating section. Background Art

[0002] Steel typically requires preheating before cold working, necessitating a preheating section within the cold working production line. This preheating process reduces cracking in the steel and improves processing quality. The cold line preheating section heats the steel, requiring a relatively high temperature. However, heat radiation from this section can overheat surrounding equipment and the environment, necessitating additional sealing structures to minimize heat dissipation from the cold line preheating section and reduce the ingress of cold air, which could lower the internal temperature of the heat exchanger in the preheating section, impacting heat recovery and atmospheric emissions.

[0003] At present, the sealing structure at the entrance of the cold line preheating section generally adopts a steel roller set at the lower end of the entrance. The steel roller is used to transport steel, and an upper lifting component and an upper sealing beam are set at the upper end of the entrance. The upper sealing component drives the upper sealing beam to move vertically up and down to cooperate with the steel roller to achieve sealing at the entrance.

[0004] However, the sealing mechanism between the upper sealing beam and the steel rollers results in linear contact, which can easily lead to loose seals, resulting in heat loss within the preheating section and elevated ambient temperatures. Furthermore, because the steel rollers used for conveying steel are used for sealing, they are subject to high temperatures. To ensure their reliability, they must be cooled. Related technologies employ water cooling, which not only consumes large amounts of water but also can easily cause the rotary joints in the cooling system to leak after prolonged use, compromising reliability.

[0005] The above-mentioned related technologies have the defect of poor sealing effect at the inlet of the cold line preheating section. Utility Model Content

[0006] In order to improve the sealing effect of the cold line preheating section inlet, the present application provides a cold line preheating section inlet sealing structure.

[0007] The cold line preheating section inlet sealing structure provided in this application adopts the following technical solutions:

[0008] The cam is secured to the bottom of the seal so that the seal can be adjusted to fit the seal type of the sealant and to the cam face of the sealant, and the cam is secured to the bottom of the seal so that the sealant can be adjusted to fit the seal type of the sealant.

[0009] By adopting the above technical scheme, the original upper lifting assembly of the cold line preheating section is retained, and the upper sealing part is connected to the lower end of the upper lifting assembly, and the connection between the upper lifting assembly and the upper sealing part is realized through the upper connecting part of the upper sealing part, so that the upper sealing part can be driven to move vertically up and down by the upper lifting assembly; a lower lifting assembly is added at the lower end of the cold line preheating section, and the lower lifting assembly is connected to the lower sealing assembly, and the connection with the lower sealing part is realized through the lower connecting part of the lower sealing assembly, so that the lower sealing part can be driven to move vertically up and down by the lower lifting assembly, and then the relative movement of the upper seal and the lower seal can achieve abutment, thereby ensuring reliable closure of the entrance of the cold line preheating section and reducing heat overflow; and, the abutment point between the upper seal and the lower seal forms an abutment plane, and the abutment plane extends along the conveying direction, so that the sealing length can be extended in the conveying direction, playing a reliable heat insulation role, reducing heat transfer, and improving the sealing effect.

[0010] Optionally, both the upper sealing member and the lower sealing member are ceramic fiber blocks.

[0011] By adopting the above technical solution and utilizing the characteristics of ceramic fiber such as high temperature resistance, good thermal stability and low thermal conductivity, physical sealing of the entrance of the cold line preheating section can be achieved, while reducing heat transfer, optimizing the sealing effect, and alleviating heat radiation to the surrounding environment and equipment; the block structure can facilitate increasing the thickness in the conveying direction to optimize the thermal insulation sealing effect.

[0012] Optionally, the upper connecting member is a shell-like structure, and the upper connecting member cover is arranged above the upper sealing member, so that the upper sealing member protrudes downward from the upper connecting member, and the upper lifting assembly drives the upper connecting member to move, so that the upper connecting member can press the upper sealing member downward against the lower sealing assembly.

[0013] By adopting the above technical solution, the upper connecting part can support the upper seal, facilitate the reliable movement of the upper seal through the upper lifting assembly, and achieve reliable downward pressure on the upper seal through the upper connecting part covered on the upper seal, which helps to balance the force on the upper seal, thereby achieving reliable abutment with the lower seal and optimizing the sealing effect.

[0014] Optionally, the upper connecting member is provided with a clamping plate, the clamping plate is provided with a mounting groove, the upper lifting assembly is a worm gear screw lift, the worm gear screw lift includes a handwheel, a worm and a lifting part, the handwheel is connected to one end of the worm, and the other end of the worm is movably passed through the mounting groove, so that the handwheel is arranged on the outside of the upper connecting member, the worm is transmission-connected to the lifting part, and the lifting part is connected to the upper connecting member, so that the handwheel rotates to drive the worm to rotate, and the worm can drive the lifting part to move vertically, and the lifting part is transmission-connected to the upper connecting member for driving the upper connecting member to move vertically.

[0015] By adopting the above technical solution, the installation groove opened on the clamping plate can make the handwheel located outside the upper connecting part, so that it is convenient to drive the worm to rotate by turning the handwheel, and then drive the lifting part to achieve vertical lifting through the worm. The vertical movement of the lifting part drives the upper connecting part to move, thereby realizing the vertical movement of the upper sealing part.

[0016] Optionally, the lower lifting assembly is a worm gear screw lift.

[0017] By adopting the above technical solution, the lower sealing assembly can be moved vertically.

[0018] Optionally, a connecting component is further included, and two lower lifting components are provided, and the two lower lifting components are arranged horizontally at intervals. The connecting component is driven to connect the two lower lifting components, and the connecting component is used to make the two lower lifting components rise and fall synchronously.

[0019] By adopting the above technical solution, the two lower lifting assemblies can improve the reliability of the vertical movement of the lower sealing assembly, and provide reliable support for the lower sealing assembly, thereby avoiding the problem of loose abutment with the upper sealing component due to uneven force on the lower sealing assembly; the connecting assembly can make the two lower lifting assemblies rise and fall synchronously, so that the two ends of the lower lifting assemblies remain horizontal, thereby optimizing the sealing effect and simplifying the operation. The two ends of the lower sealing assembly can be achieved by adjusting only one lower lifting assembly.

[0020] Optionally, the lower connecting member includes a bottom plate, a first side plate and a second side plate, the lower side of the bottom plate is connected to the lower lifting assembly, the upper side of the bottom plate supports the lower seal, the first side plate and the second side plate are respectively connected to two adjacent sides of the bottom plate, the first side plate and the second side plate extend vertically, along the conveying direction, the first side plate is connected to the side of the lower seal away from the entrance of the cold line preheating section, along the width direction perpendicular to the conveying direction in the horizontal plane, the second side plate is connected to the side of the lower seal away from the entrance of the cold line preheating section.

[0021] By adopting the above technical solution, the bottom plate is used to support the lower seal and realize the pushing effect on the lower seal; the first side plate and the second side plate are used to connect the lower seal to prevent the lower seal from being separated from the lower connecting member, and the first side plate and the second side plate can prevent the lower seal from being deformed and affecting the sealing effect when the lower seal abuts against the upper seal.

[0022] Optionally, along the conveying direction, the length of the upper connecting member is smaller than the length of the upper sealing member, and the length of the lower connecting member is smaller than the length of the lower sealing member, so that both the upper sealing member and the lower sealing member can be attached to the outer wall of the entrance of the cold line preheating section.

[0023] By adopting the above technical solution, the upper seal and the lower seal can contact and abut each other, thereby achieving the purpose of sealing; and the upper seal and the lower seal can contact the entrance of the cold line preheating section, thereby optimizing the thermal insulation effect and reducing the risk of heat transfer affecting the surrounding environment and equipment.

[0024] Optionally, the upper connecting member and the upper sealing member, and the lower connecting member and the lower sealing member are both connected by bolts.

[0025] By adopting the above technical solution, the bolt connection method can be easily disassembled, so that the upper seal and the lower seal can be replaced conveniently, thereby improving efficiency.

[0026] Optionally, it also includes a support assembly, one end of which is connected to the lower end of the cold line preheating section entrance, and the other end of the support assembly is rotatably connected to a steel roller, so that the steel roller is arranged on the side of the lower sealing assembly away from the cold line preheating section entrance along the conveying direction, and the steel roller is used to convey the strip steel output from the cold line preheating section entrance.

[0027] By adopting the above technical solution, due to the setting of the upper sealing component and the lower sealing component, the original steel roller no longer needs to be used to achieve the sealing function. Therefore, the steel roller can be kept away from the entrance of the cold line preheating section through the support component. On the one hand, the lower sealing component is avoided to prevent interference, so that the steel roller can achieve the conveying function of the strip; on the other hand, the steel roller is kept away from the entrance of the cold line preheating section and heat insulation is achieved through the lower sealing component, so that the steel roller no longer needs to be equipped with a water cooling system, thereby avoiding leakage of the water cooling system due to long-term use and improving the reliability of use.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. The original upper lifting assembly of the cold line preheating section is retained, and an upper sealing part is connected to the lower end of the upper lifting assembly, and the connection between the upper lifting assembly and the upper sealing part is realized through the upper connecting piece of the upper sealing part, so that the upper sealing part can be driven to move vertically up and down by the upper lifting assembly; a lower lifting assembly is added at the lower end of the cold line preheating section, and the lower lifting assembly is connected to the lower sealing assembly, and the connection with the lower sealing part is realized through the lower connecting piece of the lower sealing assembly, so that the lower sealing part can be driven to move vertically up and down by the lower lifting assembly, and then the upper and lower seals can be abutted by the relative movement, thereby ensuring reliable sealing of the entrance of the cold line preheating section and reducing heat overflow; and the abutment portion between the upper seal and the lower seal forms an abutment plane, and the abutment plane extends along the conveying direction, so that the sealing length can be extended in the conveying direction, playing a reliable heat insulation role, reducing heat transfer, and thus improving the sealing effect;

[0030] 2. Utilizing the characteristics of high temperature resistance, good thermal stability and low thermal conductivity of ceramic fiber, physical sealing is achieved at the entrance of the cold line preheating section, which can reduce heat transfer, optimize the sealing effect, and alleviate heat radiation to the surrounding environment and equipment; the block structure can facilitate increasing the thickness in the conveying direction to optimize the thermal insulation and sealing effect;

[0031] 3. The upper seal and the lower seal can contact each other to achieve the purpose of sealing; and the upper seal and the lower seal can contact the entrance of the cold line preheating section, thereby optimizing the thermal insulation effect and reducing the risk of heat transfer affecting the surrounding environment and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a right side view of the cold line preheating section inlet sealing structure and the cold line preheating section inlet assembly of an embodiment of the present application.

[0033] Figure 2 This is a front view of the cold line preheating section inlet sealing structure of an embodiment of the present application.

[0034] Figure 3 It is a schematic diagram of the support assembly of an embodiment of the present application.

[0035] Figure 4 This is a front view of the upper sealing assembly of an embodiment of the present application.

[0036] Figure 5 It is a left side view of the lower sealing assembly of an embodiment of the present application.

[0037] Figure 6 Schematic diagram of the lower connecting member of an embodiment of the present application.

[0038] Description of reference numerals:

[0039] 100, upper lifting assembly; 110, hand wheel; 120, worm; 130, lifting unit; 200, steel roller;

[0040] 1. Upper sealing assembly; 11. Upper connecting piece; 111. Pressing plate; 112. Mounting groove; 12. Upper sealing piece; 2. Lower lifting assembly; 3. Lower sealing assembly; 31. Lower connecting piece; 311. Bottom plate; 312. First side plate; 313. Second side plate; 32. Lower sealing piece; 4. Connecting assembly; 5. Support assembly. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1 -Attached Figure 6 The present application is further described in detail. In this embodiment, unless otherwise specified, the terms "connected", "connected" and "fixed" are understood in a broad sense, including fixed connection, detachable connection, connection to form an integral structure, mechanical connection, electrical connection, direct connection, indirect connection through an intermediary, internal connection and interaction between two elements, and can be understood based on the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. Moreover, in the description of this embodiment, the terms "above", "below", "right", and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise specified, orientation words such as "inside" and "outside" used in this application refer to the outlines of the corresponding components themselves.

[0043] like Figure 1 and Figure 2As shown, the present invention discloses a sealing structure for the cold line preheating section entrance (hereinafter referred to as the "sealing structure"). An upper lifting assembly 100 is provided at the upper end of the cold line preheating section entrance. The sealing structure comprises an upper sealing assembly 1, a lower lifting assembly 2, and a lower sealing assembly 3. The original upper sealing beam is removed, and the upper sealing assembly 1 is installed below the upper lifting assembly 100.

[0044] like Figure 1 and Figure 2 As shown, the upper sealing assembly 1 includes an upper connecting member 11 and an upper sealing member 12. The upper connecting member 11 is connected to the upper lifting assembly 100. The upper sealing member 12 is located on the lower side of the upper connecting member 11. The upper lifting assembly 100 drives the upper sealing member 12 to move vertically. This sealing structure retains the original upper lifting assembly 100 of the cold line preheating section, connects the upper sealing member 12 to the lower end of the upper lifting assembly 100, and connects the upper lifting assembly 100 and the upper sealing member 12 via the upper connecting member 11 of the upper sealing member 12, thereby enabling the upper lifting assembly 100 to drive the upper sealing member 12 to move vertically up and down. A lower lifting assembly 2 is added to the lower end of the cold line preheating section. The lower lifting assembly 2 is located at the lower end of the cold line preheating section entrance and is connected to the lower sealing assembly 3. The lower sealing assembly 3 includes a lower connecting member 31 and a lower sealing member 32. The lower connecting member 31 is connected to the upper side of the lower lifting assembly 2. The lower sealing member 32 is located above the lower connecting member 31. The lower lifting assembly 2 drives the lower sealing member 32 to move vertically. The lower lifting assembly 2 is connected to the lower sealing member 32 via the lower connecting member 31 of the lower sealing assembly 3, thereby enabling the lower lifting assembly 2 to drive the lower sealing member 32 to move vertically up and down.

[0045] The upper sealing assembly 1 and the lower sealing assembly 3 can move toward each other in the vertical direction, so that the upper seal 12 and the lower seal 32 can abut and press against each other to seal the entrance of the cold wire preheating section. The relative movement of the upper seal 12 and the lower seal 32 achieves abutment, which can ensure the reliable closure of the entrance of the cold wire preheating section and reduce heat overflow. Because the abutment between the upper seal 12 and the lower seal 32 is an abutment plane, the abutment plane extends a preset length along the conveying direction of the strip, thereby extending the sealing length in the conveying direction, playing a reliable heat-insulating role, reducing heat transfer, and improving the sealing effect. After the sealing structure improves the sealing effect and heat-insulating effect, the operator can reduce the risk of heat radiation burns when inspecting the surface of the strip.

[0046] like Figure 1 and Figure 2 As shown, both the upper seal 12 and the lower seal 32 can optionally be ceramic fiber blocks. Leveraging the high-temperature resistance, excellent thermal stability, and low thermal conductivity of ceramic fiber, while achieving a physical seal at the entrance of the cold line preheating section, it can also reduce heat transfer, optimize the sealing effect, and mitigate heat radiation to the surrounding environment and equipment. The block structure allows for increased thickness in the conveying direction, optimizing the thermal insulation and sealing effect.

[0047] like Figure 1 、 Figure 2 and Figure 3 As shown, the sealing structure optionally further includes a support assembly 5. One end of the support assembly 5 is connected to the lower end of the cold line preheating section entrance, and the other end of the support assembly 5 is rotatably connected to a steel roller 200, so that the steel roller 200 is arranged on the side of the lower sealing assembly 3 away from the cold line preheating section entrance along the conveying direction. The steel roller 200 is used to convey the strip output from the cold line preheating section entrance. The installation of the upper and lower sealing assemblies 1 and 3 eliminates the need for the existing steel roller 200 to perform a sealing function. Therefore, the support assembly 5 allows the steel roller 200 to be positioned away from the entrance of the cold line preheating section. This avoids interference with the lower sealing assembly 3, allowing the steel roller 200 to convey the strip. Furthermore, by positioning the steel roller 200 away from the entrance of the cold line preheating section and providing thermal insulation through the lower sealing assembly 3, the temperature of the steel roller 200 is controlled below 50°C. This eliminates the need for a water cooling system for the steel roller 200, saving on cooling water and the installation of rotary joints. This prevents leakage from the water cooling system over time, achieving cost reduction and increased reliability. The specific structure of the support assembly 5 can be customized and can be made of steel plate. During installation, a level should be used to measure, adjust, and tighten the steel roller 200 to ensure reliable installation. The steel roller 200 is connected to a motor to drive its rotation. Given the existing structure, the detailed connection method and principles will not be elaborated here.

[0048] like Figure 1 、 Figure 2 and Figure 4 As shown, optionally, the upper connecting member 11 is a shell-like structure, and the upper connecting member 11 is covered above the upper seal 12, so that the upper seal 12 protrudes downward from the upper connecting member 11. The upper connecting member 11 can support the upper seal 12, which is convenient for achieving reliable movement of the upper seal 12 through the upper lifting assembly 100. The upper lifting assembly 100 drives the upper connecting member 11 to move, so that the upper connecting member 11 can press the upper seal 12 downward against the lower sealing assembly 3. Through the upper connecting member 11 covering the upper seal 12, through the surface contact between the upper connecting member 11 and the upper seal 12, a reliable downward pressure effect on the upper seal 12 is achieved, which helps to balance the force on the upper seal 12, thereby achieving reliable abutment with the lower seal 32 and optimizing the sealing effect. The upper connecting member 11 can be made of metal; preferably, the upper connecting member 11 is made of SUS304.

[0049] like Figure 1 、 Figure 2 and Figure 4As shown, optionally, the upper connecting member 11 is provided with a pressing plate 111, and a mounting groove 112 is provided on the pressing plate 111. The upper lifting assembly 100 is a worm gear screw lift, which includes a handwheel 110, a worm 120 and a lifting portion 130. The handwheel 110 is connected to one end of the worm 120, and the other end of the worm 120 is movably inserted into the mounting groove 112, so that the handwheel 110 is arranged on the outside of the upper connecting member 11 for easy manual operation. The worm 120 is connected to the lifting portion 130 by transmission. The lifting portion 130 is connected to the upper connecting member 11 so that the handwheel 110 rotates to drive the worm 120 to rotate. The worm 120 can drive the lifting portion 130 to move vertically. The lifting portion 130 is connected to the upper connecting member 11 for driving the upper connecting member 11 to move vertically. The mounting groove 112 provided on the pressure plate 111 enables the handwheel 110 to be located outside the upper connecting member 11, making it easy to rotate the handwheel 110 to drive the worm 120 to rotate, and then the worm 120 drives the lifting portion 130 to achieve vertical lifting. The vertical movement of the lifting portion 130 drives the upper connecting member 11 to move, thereby achieving vertical movement of the upper sealing member 12. The lifting portion 130 can include a worm gear and a lead screw. The worm gear is connected to the worm 120 in a transmission manner. The lead screw is screwed to the middle of the worm gear. The rotation of the worm 120 drives the worm gear to rotate, thereby achieving vertical lifting of the lead screw. The upper sealing assembly 1 is connected to the upper connecting member 11 through the lead screw. The upper connecting member 11 is provided with a support, which is connected to the lifting portion 130 via the support, so that the lifting portion 130 drives the vertical movement of the upper connecting member 11. The connection method between the upper connecting member 11 and the lifting portion 130 is not limited, as long as the lifting portion 130 can achieve a driving effect on the upper connecting member 11.

[0050] Optionally, the lower lifting assembly 2 is a worm gear screw elevator, which enables vertical movement of the lower sealing assembly 3 and helps improve control accuracy and operational flexibility. The lower lifting assembly 2 can be similar in structure to the upper lifting assembly 100. The handwheel rotates to drive the worm, thereby driving the vertical lifting of the lifting unit, and the lower sealing assembly 3 is connected to the lifting unit to achieve vertical movement of the lower sealing assembly 3. The worm gear screw elevators of the lower lifting assembly 2 and the upper lifting assembly 100 can both be selected from existing structures as needed. Given the existing related technology, their structures and principles will not be described in detail here.

[0051] like Figure 1 and Figure 2As shown, the sealing structure optionally further includes a connecting assembly 4. Two lower lifting assemblies 2 are provided, and the two lower lifting assemblies 2 are arranged horizontally at intervals. The two lower lifting assemblies 2 can improve the reliability of the vertical movement of the lower sealing assembly 3 and provide reliable support for the lower sealing assembly 3, thereby avoiding the problem of loose contact with the upper sealing member 12 caused by uneven force on the lower sealing assembly 3. The connecting assembly 4 is used to synchronously raise and lower the two lower lifting assemblies 2. The connecting assembly 4 can synchronously raise and lower the two lower lifting assemblies 2, thereby maintaining the two ends of the lower lifting assemblies 2 horizontally, optimizing the sealing effect, and simplifying operation. The two ends of the lower sealing assembly 3 can be synchronously moved by adjusting only one lower lifting assembly 2. The connecting assembly 4 can include a connecting rod and two transmission members. The transmission members can include structures such as couplings, gaskets, and bolts to achieve a transmission connection between the two lower lifting assemblies 2 and the connecting rod. For example, the worm gears of the two lower lifting assemblies 2 are connected by the connecting assembly 4, so that the rotation of one worm gear can drive the rotation of the other worm gear, thereby achieving synchronous lifting.

[0052] like Figure 1 、 Figure 5 and Figure 6 As shown, optionally, the lower connecting member 31 includes a bottom plate 311, a first side plate 312, and a second side plate 313. The lower side of the bottom plate 311 is connected to the lower lifting assembly 2, and the upper side of the bottom plate 311 supports the lower seal 32. The bottom plate 311 is used to support the lower seal 32 and realize the pushing effect on the lower seal 32. The first side plate 312 and the second side plate 313 are respectively connected to the two adjacent sides of the bottom plate 311, and the first side plate 312 and the second side plate 313 extend vertically. Along the conveying direction, the first side plate 312 is connected to the side of the lower seal 32 away from the entrance of the cold line preheating section; along the width direction perpendicular to the conveying direction in the horizontal plane, the second side plate 313 is connected to the side of the lower seal 32 away from the entrance of the cold line preheating section. The first side plate 312 and the second side plate 313 are used to connect the lower seal 32 to prevent the lower seal 32 from separating from the lower connecting member 31. In addition, the first side plate 312 and the second side plate 313 can prevent the lower seal 32 from being deformed and affecting the sealing effect when the lower seal 32 abuts against the upper seal 12.

[0053] Optionally, along the conveying direction, the length of the upper connector 11 is shorter than that of the upper seal 12, and the length of the lower connector 31 is shorter than that of the lower seal 32, allowing both the upper seal 12 and the lower seal 32 to adhere to the outer wall of the cold line preheating section entrance. The upper seal 12 and the lower seal 32 protrude from the upper connector 11 and the lower connector 31, allowing them to contact and abut against each other, thereby achieving a seal. Furthermore, the upper seal 12 and the lower seal 32 can contact the outer wall of the cold line preheating section entrance, thereby optimizing the thermal insulation effect and reducing the risk of heat dissipation affecting the surrounding environment and equipment.

[0054] like Figure 2 、 Figure 4 and Figure 6 As shown, optionally, the upper connecting member 11 and the upper sealing member 12, and the lower connecting member 31 and the lower sealing member 32 are connected by M16 bolts. The bolt connection method can be easy to disassemble, so that the upper sealing member 12 and the lower sealing member 32 can be easily replaced, thereby improving efficiency. The material of the sealing structure can be made of steel, and the shape, model and other parameters of the steel can be determined according to needs. It can be understood that the sealing structure also includes necessary structures for connection, support, drive, limit, sealing and control functions, so that the sealing structure can operate normally; the parameters such as the shape, size, material and setting quantity of each part of the sealing structure can be determined according to needs, as long as the corresponding functions can be achieved.

[0055] The implementation principle of the cold line preheating section entrance sealing structure of the embodiment of the present application is as follows: the original upper lifting assembly 100 of the cold line preheating section is retained, and the upper sealing member 12 is connected to the lower end of the upper lifting assembly 100, and the upper connecting member 11 of the upper sealing member 12 realizes the connection between the upper lifting assembly 100 and the upper sealing member 12, and the upper lifting assembly 100 drives the upper sealing member 12 to move vertically up and down; a lower lifting assembly 2 is added at the lower end of the cold line preheating section, the lower lifting assembly 2 is connected to the lower sealing assembly 3, and the lower connecting member 31 of the lower sealing assembly 3 realizes the connection with the lower sealing member 32, and the lower lifting assembly 2 drives the lower sealing member 32 to move vertically up and down, and the relative movement of the upper seal 12 and the lower seal 32 realizes abutment, thereby ensuring reliable sealing of the cold line preheating section entrance and reducing heat overflow; and the abutment portion between the upper seal 12 and the lower seal 32 forms an abutment plane, which extends along the conveying direction, can extend the sealing length in the conveying direction, play a reliable heat insulation role, reduce heat overflow, and thus improve the sealing effect.

[0056] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A cold line preheating section inlet sealing structure, wherein an upper lifting assembly (100) is provided at the upper end of the cold line preheating section inlet, characterized in that: include: An upper sealing component (1) comprises an upper connecting member (11) and an upper sealing member (12), wherein the upper connecting member (11) is connected to the upper lifting component (100), the upper sealing member (12) is arranged on the lower side of the upper connecting member (11), and the upper lifting component (100) drives the upper sealing member (12) to move vertically; A lower lifting assembly (2) is provided at the lower end of the entrance of the cold line preheating section; A lower sealing component (3) comprises a lower connecting member (31) and a lower sealing member (32), wherein the lower connecting member (31) is connected to the upper side of the lower lifting component (2), and the lower sealing member (32) is arranged on the upper side of the lower connecting member (31), and the lower lifting component (2) drives the lower sealing member (32) to move vertically; The upper sealing assembly (1) and the lower sealing assembly (3) can move toward each other in the vertical direction, so that the upper sealing member (12) and the lower sealing member (32) can abut against each other and be pressed tightly, so as to seal the entrance of the cold line preheating section. The abutment point between the upper sealing member (12) and the lower sealing member (32) is an abutment plane, and the abutment plane extends a preset length along the conveying direction of the strip steel.

2. The cold wire preheating section inlet sealing structure according to claim 1 is characterized in that: The upper sealing member (12) and the lower sealing member (32) are both ceramic fiber blocks.

3. The cold wire preheating section inlet sealing structure according to claim 1, characterized in that: The upper connecting member (11) is a shell-like structure. The upper connecting member (11) is covered above the upper sealing member (12), so that the upper sealing member (12) protrudes downward from the upper connecting member (11). The upper lifting assembly (100) drives the upper connecting member (11) to move, so that the upper connecting member (11) can press the upper sealing member (12) downward against the lower sealing assembly (3).

4. The cold wire preheating section inlet sealing structure according to claim 1, characterized in that: The upper connecting member (11) is provided with a pressing plate (111), and the pressing plate (111) is provided with a mounting groove (112). The upper lifting assembly (100) is a worm screw elevator, and the worm screw elevator includes a handwheel (110), a worm (120) and a lifting part (130). The handwheel (110) is connected to one end of the worm (120), and the other end of the worm (120) is movably inserted into the mounting groove (112), so that the handwheel (110) 0) is arranged on the outside of the upper connecting member (11), the worm (120) is connected to the lifting part (130) by transmission, and the lifting part (130) is connected to the upper connecting member (11), so that the hand wheel (110) rotates to drive the worm (120) to rotate, and the worm (120) can drive the lifting part (130) to move vertically, and the lifting part (130) is connected to the upper connecting member (11) to drive the upper connecting member (11) to move vertically.

5. The cold wire preheating section inlet sealing structure according to claim 1, characterized in that: The lower lifting assembly (2) is a worm gear screw lift.

6. The cold wire preheating section inlet sealing structure according to claim 1, characterized in that: It also includes a connecting component (4), wherein two lower lifting components (2) are provided, and the two lower lifting components (2) are arranged horizontally at intervals. The connecting component (4) is used to drive and connect the two lower lifting components (2), and the connecting component (4) is used to make the two lower lifting components (2) rise and fall synchronously.

7. The cold wire preheating section inlet sealing structure according to claim 1, characterized in that: The lower connecting member (31) includes a bottom plate (311), a first side plate (312) and a second side plate (313); the bottom plate (311) is connected to the lower lifting assembly (2) on the bottom plate (311) on the top side thereof; the first side plate (312) and the second side plate (313) are respectively connected to two adjacent sides of the bottom plate (311); the first side plate (312) and the second side plate (313) extend vertically; along the conveying direction, the first side plate (312) is connected to a side of the lower sealing member (32) away from the entrance of the cold line preheating section; and along a width direction perpendicular to the conveying direction in a horizontal plane, the second side plate (313) is connected to a side of the lower sealing member (32) away from the entrance of the cold line preheating section.

8. The cold wire preheating section inlet sealing structure according to claim 1, characterized in that: Along the conveying direction, the length of the upper connecting member (11) is shorter than the length of the upper sealing member (12), and the length of the lower connecting member (31) is shorter than the length of the lower sealing member (32), so that both the upper sealing member (12) and the lower sealing member (32) can be attached to the outer wall of the entrance of the cold line preheating section.

9. The cold wire preheating section inlet sealing structure according to claim 1, characterized in that: The upper connecting member (11) and the upper sealing member (12), as well as the lower connecting member (31) and the lower sealing member (32), are connected via bolts.

10. The cold wire preheating section inlet sealing structure according to claim 1, characterized in that: It also includes a support assembly (5), one end of the support assembly (5) is connected to the lower end of the cold line preheating section entrance, and the other end of the support assembly (5) is rotatably connected to a steel roller (200), so that the steel roller (200) is arranged on a side of the lower sealing assembly (3) away from the cold line preheating section entrance along the conveying direction, and the steel roller (200) is used to convey the strip output from the cold line preheating section entrance.

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