A converter back dam door arrangement with a safety sight port

Abstract

The utility model discloses a converter furnace rear fire door device with safe observation port, including fire door body, the fire door body swing setting between guide structure, the fire door body includes left fire door and right fire door of left -right symmetry arrangement, and the combination of left fire door and right fire door forms constitutes central observation port, the guide structure includes two groups of guide rail and guide wheel of the fire door body upper and lower both ends with the fire door body connection, fixedly set with drive mechanism on left fire door and right fire door, and the side portion of left fire door and right fire door forms concave type protective fence structure with converter, and the right upper corner of left fire door is cut and forms first rectangular gap, and the left upper corner of right fire door is cut and forms second rectangular gap, and first rectangular gap and second rectangular gap combination constitute central observation port.

Description

Technical Field

[0001] This utility model belongs to the field of safety technology of steelmaking equipment in the metallurgical industry, and specifically relates to a converter furnace rear fire baffle device with a safety observation port. Background Technology

[0002] The rear fire damper is a protective device used during converter repair. Its principle is to utilize the damper's movement to allow for north-south displacement during repairs, enabling observation of the wear and repair status of the refractory materials inside the converter, thus improving production efficiency. Traditional converter rear fire dampers employ a fully enclosed design, which effectively blocks slag splashes and heat radiation, but has significant drawbacks: poor visibility; when closed, the damper completely obscures the operator's view, making it impossible to observe the converter's tapping status, molten steel level, and lining erosion in real time, leading to delays in process adjustments. Furthermore, the traditional fully enclosed design requires repeated opening and closing of the damper during slag removal operations, reducing operational efficiency.

[0003] In view of the above factors, a converter rear fire baffle device with a safety observation port is provided to provide safety protection in the working area behind the furnace during the converter steelmaking process. By setting a structural opening in a specific area, the entire operation process can be seen and the slag cleaning operation can be carried out without obstacles. Utility Model Content

[0004] The purpose of this invention is to provide a converter rear fire baffle device with a safety observation port to solve the problems mentioned in the background art.

[0005] The purpose of this utility model is achieved through the following technical solution: a converter rear fire baffle device with a safety observation port, including a fire baffle body, the fire baffle body being movably disposed between guide structures, the fire baffle body including a left fire baffle and a right fire baffle arranged symmetrically on the left and right sides, the junction of the left fire baffle and the right fire baffle forming a central observation port.

[0006] The guide structure includes two sets of guide rails located at the upper and lower ends of the fire door body and guide wheels connected to the fire door body. The left fire door and the right fire door are fixedly equipped with drive mechanisms.

[0007] The sides of the left and right fire doors form a concave protective barrier structure with the converter.

[0008] Furthermore, the upper right corner of the left fire door is cut off to form a first rectangular notch; the upper left corner of the right fire door is cut off to form a second rectangular notch, and the first rectangular notch and the second rectangular notch are combined to form a central observation port.

[0009] Furthermore, the drive mechanism includes a transmission structure, which includes a control motor and a worm gear reducer connected to the output end of the control motor. The worm gear reducer is connected to a spur gear reducer via a coupling, and the spur gear reducer is connected to the guide wheel via a chain drive.

[0010] Furthermore, a drive platform is provided on the end face of the left and right fire doors, and the drive platform is welded to the left and right fire doors.

[0011] Furthermore, the drive platform includes a lifting platform, which is welded to the support end. The support end is connected to the transmission screw through a threaded sleeve, and the end of the support end is sleeved with a guide rod through a hollow sleeve.

[0012] One end of the transmission screw is connected to the output end of the motor, and the other end of the transmission screw is rotatably connected to the positioning plate. The positioning plate is welded to the left fire door and the right fire door.

[0013] Furthermore, the drive platform is positioned below the first rectangular notch and the second rectangular notch.

[0014] Furthermore, the left and right fire doors include steel plate supports, the inner walls of which are welded to a support structure. The support structure is a tortoise shell mesh structure, and rock wool is inlaid in each adjacent channel of the tortoise shell mesh structure. The shape of the rock wool is similar to that of each adjacent channel of the tortoise shell mesh structure.

[0015] Furthermore, the steel plate support is provided with a welded support structure facing the converter side, and each adjacent channel of the hexagonal mesh structure is inlaid with refractory material, the refractory material including refractory bricks, the thickness of the refractory bricks being the same as the height of each adjacent channel of the hexagonal mesh structure;

[0016] The tortoise shell mesh structure has refractory material embedded in each adjacent channel to form a refractory structure.

[0017] Furthermore, the height of the refractory structure extends to the positions of the first rectangular notch and the second rectangular notch.

[0018] The application of a converter furnace rear fire baffle device with a safety observation port: This device is used for safety protection in the rear working area during the converter steelmaking process.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] The upper right corner of the left fire baffle is cut off to form a first rectangular notch, and the upper left corner of the right fire baffle is cut off to form a second rectangular notch. When the left and right fire baffles are closed, the first rectangular notch and the second rectangular notch combine to form a central observation port. The central observation port provides an unobstructed view, which meets the needs of steel tapping monitoring, furnace condition inspection and slag cleaning operations, without the need to open or close the fire baffles.

[0021] The lower part and the enclosed areas on both sides of the left and right fire doors of this utility model form a concave protective railing. By setting structural openings in specific areas, the entire operation process can be seen and the slag removal operation can be carried out without obstacles.

[0022] This utility model provides a drive platform on the end face of the left and right fire doors. The drive platform is welded to the left and right fire doors. The drive platform includes a lifting platform, which is connected to and welded to the support end. The support end is connected to the transmission screw through a threaded sleeve. The end of the support end is sleeved with a guide rod through a hollow sleeve. The above structure provides the slag removal operator with an operating platform to perform unobstructed operations through the central observation port. Attached Figure Description

[0023] Figure 1 This is a front view schematic diagram of the fireproof door body of this utility model;

[0024] Figure 2 This is a top view schematic diagram of the concave protective railing structure formed by the fire door body of this utility model;

[0025] Figure 3 This is a schematic diagram of the drive platform of this utility model;

[0026] Figure 4 This is a utility model Figure 3 Enlarged view of a portion;

[0027] Figure 5 This is a schematic diagram of the cross-section (steel plate support) of the fireproof door body of this utility model;

[0028] Figure 6 This is a schematic diagram of the supporting structure and rock wool of this utility model;

[0029] Figure 7 This is a plan view of the support structure and refractory material of this utility model;

[0030] Figure 8 This is a schematic diagram of the drive mechanism of this utility model. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Specific Implementation Example 1:

[0035] like Figure 1-8 As shown, a converter rear fire baffle device with a safety observation port includes a fire baffle body 1, which is movably disposed between guide structures 2. The fire baffle body 1 includes a left fire baffle 3 and a right fire baffle 4 arranged symmetrically on the left and right sides. The junction of the left fire baffle 3 and the right fire baffle 4 forms a central observation port 5.

[0036] The guide structure 2 includes two sets of guide rails 6 located at the upper and lower ends of the fire door body 1 and guide wheels 7 connected to the fire door body 1. The left fire door 3 and the right fire door 4 are fixedly provided with drive mechanisms 8.

[0037] The sides of the left fire baffle 3 and the right fire baffle 4 form a concave protective railing structure 9 with the converter.

[0038] The upper right corner of the left fire door 3 is cut to form a first rectangular notch 10; the upper left corner of the right fire door 4 is cut to form a second rectangular notch 11. The first rectangular notch 10 and the second rectangular notch 11 are combined to form a central observation port 5.

[0039] The drive mechanism 8 includes a transmission structure, which includes a control motor 12 and a worm gear reducer 13 connected to the output end of the control motor 12. The worm gear reducer 13 is connected to a spur gear reducer 14 via a coupling, and the spur gear reducer 14 is connected to the guide wheel 7 via a chain drive.

[0040] In the above embodiments, the central observation port provides an unobstructed view, meeting the needs of steel tapping monitoring, furnace condition inspection and slag cleaning operations. There is no need to open or close the fire door. The lower and side enclosed areas form a concave protective railing structure. When personnel approach the work area, they are protected by the enclosed area, namely the lower part of the first rectangular notch 10 and the second rectangular notch 11.

[0041] In the above embodiment, the left fire door 3 and the right fire door 4 are provided with guide wheels 7 that cooperate with the guide rail 6 and realize the opening / closing operation under the action of the drive mechanism 8. The left fire door 3 and the right fire door 4 are made of high temperature resistant alloy steel (such as 06Cr25Ni20). Specific Implementation Example 2:

[0043] Unlike the first specific embodiment, a drive platform 15 is provided on the end face of the left fire door 3 and the right fire door 4, and the drive platform 15 is welded to the left fire door 3 and the right fire door 4.

[0044] The drive platform 15 includes a lifting platform 16, which is welded to a support end 17. The support end 17 is connected to a transmission screw 18 via a threaded sleeve. The end of the support end 17 is sleeved with a guide rod 20 via a hollow sleeve 19. The guide rod is provided with a smooth rod structure.

[0045] One end of the transmission screw 18 is connected to the output end of the motor, and the other end of the transmission screw 18 is rotatably connected to the positioning plate 21. The positioning plate 21 is welded to the left fire door 3 and the right fire door 4.

[0046] The drive platform 15 is located below the first rectangular notch 10 and the second rectangular notch 11.

[0047] In the above embodiment, a drive platform 15 is provided, which allows for manual standing and lifting. Depending on the design height of the left fire door 3 and the right fire door 4, the drive platform 15 can conveniently meet the needs of slag removal operations. Slag removal operations do not require repeated opening and closing of the fire doors, thus improving work efficiency.

[0048] In the above embodiment, a positioning platform is fixedly installed below the lifting platform. The positioning platform is welded to the left fire door and the right fire door and fixed by steel structure welding support. The positioning plate is welded and fixed to the left fire door and the right fire door. Specific Implementation Example 3;

[0050] Unlike the second specific embodiment, the left fire door 3 and the right fire door 4 include steel plate supports 22. The inner wall of the steel plate supports 22 is connected to the support structure 23 by welding. The support structure 23 is a tortoise shell mesh structure. Rock wool 24 is embedded in each adjacent channel of the tortoise shell mesh structure. The shape of the rock wool 24 is set to mimic the shape of each adjacent channel of the tortoise shell mesh structure.

[0051] The steel plate support 22 is provided with a support structure 23 welded to the side facing the converter. Each adjacent channel of the hexagonal mesh structure is inlaid with refractory material, which includes refractory bricks. The thickness of the refractory bricks is the same as the height of each adjacent channel of the hexagonal mesh structure.

[0052] The tortoise shell mesh structure has refractory material embedded in each adjacent channel to form a refractory structure.

[0053] The height of the refractory structure extends to the positions of the first rectangular notch 10 and the second rectangular notch 11.

[0054] In the above embodiment, the support structure 23 is a tortoise shell mesh structure. Rock wool 24 and steel plate support 22 are embedded in each adjacent channel of the tortoise shell mesh structure. The support structure 23 is welded to the converter side. Refractory material is embedded in each adjacent channel of the tortoise shell mesh structure to provide high-temperature protection for the left fire baffle 3 and the right fire baffle 4, so as to prevent the slag overflowing from the furnace mouth from splashing onto the inside of the fire baffle and causing some slag to adhere. At the same time, the slag adhering to the inside of the fire baffle body for a long time will reduce the durability of the left fire baffle 3 and the right fire baffle 4.

[0055] In the above embodiment, the steel plate supports 22 are supported by steel structure welding. In order to ensure that the refractory material does not fall off the edge of the welded steel plate on each hole of the hexagonal mesh structure during use, the steel plate only needs to cover the refractory material by 3-5mm.

[0056] In the above embodiment, the upper and lower end faces of the steel plate support 22 are sealed by welding of steel structure.

[0057] The application of a converter rear fire baffle device with a safety observation port enables the use of this device in the safety protection of the rear working area during converter steelmaking, reducing the frequency of fire baffle opening and closing, extending the life of the drive mechanism, improving operating efficiency, and shortening the smelting cycle.

[0058] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0059] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A converter rear fire baffle device with a safety observation port, characterized in that: Includes a fire door body (1), which is movably disposed between guide structures (2). The fire door body (1) includes a left fire door (3) and a right fire door (4) arranged symmetrically on the left and right sides. The junction of the left fire door (3) and the right fire door (4) forms a central observation port (5). The guide structure (2) includes two sets of guide rails (6) located at the upper and lower ends of the fire door body (1) and guide wheels (7) connected to the fire door body (1). The left fire door (3) and the right fire door (4) are fixedly provided with drive mechanisms (8). The sides of the left fire door (3) and the right fire door (4) form a concave protective barrier structure (9) with the converter.

2. The converter rear fire baffle device with a safety observation port according to claim 1, characterized in that: The upper right corner of the left fire door (3) is cut to form a first rectangular notch (10); the upper left corner of the right fire door (4) is cut to form a second rectangular notch (11), and the first rectangular notch (10) and the second rectangular notch (11) are combined to form a central observation port (5).

3. The converter rear fire baffle device with a safety observation port according to claim 2, characterized in that: The drive mechanism (8) includes a transmission structure, which includes a control motor (12) and a worm gear reducer (13) connected to the output end of the control motor (12). The worm gear reducer (13) is connected to a spur gear reducer (14) via a coupling. The spur gear reducer (14) is connected to the guide wheel (7) via a chain drive.

4. The converter rear fire baffle device with a safety observation port according to claim 3, characterized in that: A drive platform (15) is provided on the end face of the left fire door (3) and the right fire door (4), and the drive platform (15) is welded to the left fire door (3) and the right fire door (4).

5. The converter rear fire baffle device with a safety observation port according to claim 4, characterized in that: The drive platform (15) includes a lifting platform (16), which is connected to and welded to a support end (17). The support end (17) is connected to a transmission screw (18) through a threaded sleeve. The end of the support end (17) is sleeved with a guide rod (20) through a hollow sleeve (19). One end of the transmission screw (18) is connected to the output end of the motor, and the other end of the transmission screw (18) is rotatably connected to the positioning plate (21). The positioning plate (21) is welded to the left fire door (3) and the right fire door (4).

6. The converter rear fire baffle device with a safety observation port according to claim 5, characterized in that: The drive platform (15) is located below the first rectangular notch (10) and the second rectangular notch (11).

7. The converter rear fire baffle device with a safety observation port according to claim 6, characterized in that: The left fire door (3) and the right fire door (4) include a steel plate support (22). The inner wall of the steel plate support (22) is connected to a support structure (23) by welding. The support structure (23) is a tortoise shell mesh structure. Rock wool (24) is inlaid in each adjacent channel of the tortoise shell mesh structure. The shape of the rock wool (24) is set in accordance with the shape of each adjacent channel of the tortoise shell mesh structure.

8. The converter rear fire baffle device with a safety observation port according to claim 7, characterized in that: The steel plate support (22) is provided with a support structure (23) welded to the side facing the converter. Each adjacent channel of the turtle shell mesh structure is inlaid with refractory material (25). The refractory material includes refractory bricks. The thickness of the refractory bricks is the same as the height of each adjacent channel of the turtle shell mesh structure. The tortoise shell mesh structure has refractory material embedded in each adjacent channel to form a refractory structure.

9. The converter rear fire baffle device with a safety observation port according to claim 8, characterized in that: The height of the refractory structure extends to the positions of the first rectangular notch (10) and the second rectangular notch (11).

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