Converter slag pit device and manufacturing method thereof

Abstract

The invention discloses a converter slag pit device and a manufacturing method thereof, and belongs to the technical field of converter slag pits. A converter slag pit device comprises a slag pit body, a plurality of side plates are installed on the side walls of the two sides of the slag pit body respectively, fixing pieces are arranged between the adjacent side plates respectively, a front end plate and a rear end plate are arranged at the front end and the rear end of the slag pit body respectively, and a plurality of bottom plates are installed on the bottom wall of the slag pit body. A cavity structure is formed in each bottom plate, and a water inlet pipe and a water outlet pipe which are connected with the cavity structures are arranged on two bottom plates respectively; according to the slag pit structure, the side plates are installed on the two sides of the slag pit body, stable connection between the side plates, inclined installation of the front end plate, the rear end plate and the side plates and installation of the bottom plate are achieved through the fixing pieces, the firm slag pit structure is formed, the overall stability of the slag pit is enhanced through the design, and the high-temperature resistance of the slag pit is remarkably improved; and the impact of high-temperature liquid slag and molten steel generated in the converter smelting process is effectively resisted.

Description

Technical Field

[0001] The invention belongs to the technical field of converter slag pits, and particularly relates to a converter slag pit device under the furnace and a manufacturing method thereof. Background Art

[0002] As an essential part of converter smelting equipment and facilities, the converter slag pit under the furnace functions to collect the steel slag generated during the converter blowing process, collect the molten steel, liquid slag, etc. in case of accidents, and ensure the continuous smelting of the converter.

[0003] The previously designed converter slag pit under the furnace was made of concrete without other protection on the surface. The two sides of the slag pit were the track foundations of the ladle car, which were also made of concrete. The concrete foundation was in a high-temperature state for a long time, and the track foundation of the ladle car and the slag pit foundation were prone to being eroded and collapsing by liquid slag and molten steel, resulting in the exposure of the steel bars in the slag pit and the inability of the slag pit to be used normally; the collapse of the track foundation of the ladle car would cause the deformation of the track, and the ladle car could not move, and extremely, the ladle car would derail and cause accidents; some steel mills' converter slag pits under the furnace used seven-shaped cast iron plates. Due to the thickness of only 50 mm and the relatively light weight of a single piece, they would deform after encountering high-temperature hydraulic slag or molten steel and fall off from the bottom foundation, with a short service life. Summary of the Invention

[0004] The purpose of the invention is to address the problems existing in the prior art and provide a converter slag pit device under the furnace and a manufacturing method thereof.

[0005] To achieve the above purpose, the invention is realized by adopting the following technical solutions: A converter slag pit device under the furnace includes a slag pit body. A plurality of side plates are respectively installed on the side walls on both sides of the slag pit body. Fixing members are respectively arranged between a plurality of adjacent side plates. A front end plate and a rear end plate are respectively arranged at the front end and the rear end of the slag pit body. A plurality of bottom plates are installed on the bottom wall of the slag pit body. Cavity structures are respectively opened in a plurality of the bottom plates. A water inlet pipe and a drain pipe connected to the cavity structures are respectively arranged on two of the bottom plates. Connecting members are respectively arranged between adjacent bottom plates, and a plurality of the connecting members are used for connecting adjacent cavity structures.

[0006] By adopting the above technical solutions, the converter slag pit device under the furnace constructs a structurally complete and functionally comprehensive slag pit system by integrating key components such as the slag pit body, side plates, front end plate, rear end plate, and bottom plates. This design not only improves the durability and stability of the slag pit but also effectively manages the waste slag generated by the converter. In addition, the introduction of the cavity structure and the connecting members facilitates the cooling and maintenance of the slag pit.

[0007] Optionally, a plurality of the side plates are respectively in the shape of a parallelogram and a right trapezoid. The side plates in the shape of a right trapezoid are distributed at both ends of the side wall of the slag pit body. The thickness of a plurality of the side plates is 120 mm - 180 mm.

[0008] By adopting the above technical solution, the combination of side plates in the shape of a parallelogram and a right trapezoid not only enhances the structural strength of the slag pit body, but also optimizes the flow direction and accumulation mode of the waste slag. The side plates in the shape of a right trapezoid are distributed at both ends of the side wall of the slag pit body, which helps to guide the waste slag to gather towards the center, facilitating subsequent treatment and cleaning. At the same time, the designed thickness range of the side plates (120mm - 180mm) ensures sufficient durability and impact resistance.

[0009] Optionally, the fixing member includes a plurality of embedded plates embedded in the slag pit body. A pair of fixing columns are respectively installed on the plurality of embedded plates. Installation grooves are respectively formed between adjacent side plates. A pressing plate is arranged in the installation groove. A plurality of connecting holes with position docking are respectively formed in the installation groove and the pressing plate. A pair of fixing columns pass through the connecting holes, and fastening bolts are respectively installed at one ends of the pair of fixing columns away from the embedded plates.

[0010] By adopting the above technical solution, the design of the fixing member realizes the stable connection between the side plates through the combination of the embedded plate, the fixing column, the pressing plate and the fastening bolt. This connection method is not only simple and easy to implement, but also can effectively resist high temperature and the impact of waste slag, ensuring the long-term stable operation of the slag pit body. In addition, the design of the installation groove and the pressing plate also facilitates the installation and adjustment of the side plates, improving the construction efficiency.

[0011] Optionally, the thickness of the pressing plate is adapted to the thickness of the installation groove, and the fastening bolt is located on the pressing plate.

[0012] By adopting the above technical solution, the thickness of the pressing plate is adapted to the thickness of the installation groove, ensuring the stability of the pressing plate in the installation groove. At the same time, the fastening bolt is located on the pressing plate, which is convenient for operation and maintenance. This design not only improves the connection strength of the fixing member, but also simplifies the installation process and reduces the construction difficulty.

[0013] Optionally, the front end plate and the rear end plate are respectively trapezoidal. The front end plate, the rear end plate and the side plates are installed on the side wall of the slag pit body in an inclined manner. The upper and lower ends of the front end plate, the rear end plate and the side plates are respectively inclined surfaces.

[0014] By adopting the above technical solution, the front end plate, the rear end plate and the side plates are installed on the side wall of the slag pit body in an inclined manner, forming a flared shape. This design not only optimizes the flow direction of the waste slag, reduces the risk of blockage, but also improves the capacity and utilization rate of the slag pit. At the same time, the design of the inclined surface also facilitates the cleaning and transportation of the waste slag, reducing the maintenance cost.

[0015] Optionally, one side of several bottom plates close to the side plates is respectively an inclined surface, and the thicknesses of several bottom plates are respectively 180mm - 250mm.

[0016] By adopting the above technical solution, one side of the bottom plate close to the side plate is designed as an inclined surface, which not only enhances the stability of the bottom plate, but also can press the side plates on both sides through the inclined surface. The designed thickness range of the bottom plate (180mm - 250mm) ensures sufficient load-bearing capacity and durability, and can meet various requirements for converter slag treatment.

[0017] Optionally, the connecting member includes a raised strip and a docking groove installed between adjacent bottom plates. The raised strip and the docking groove are docked with each other, and flow channels connected to the cavity structure are respectively provided on the raised strip and the docking groove.

[0018] By adopting the above technical solution, the connecting member realizes the stable connection between adjacent bottom plates and the communication of the cavity structure through the combination of the raised strip and the docking groove. This design not only simplifies the installation process, improves the construction efficiency, but also ensures the unobstructed flow channel, providing convenience for the cooling and maintenance of the slag pit.

[0019] Optionally, high-temperature resistant rubber pads are respectively installed on the upper and lower surfaces of the raised strip.

[0020] By adopting the above technical solution, high-temperature resistant rubber pads are installed on the upper and lower surfaces of the raised strip, effectively improving the sealing performance and high-temperature resistance of the connecting member. This design not only prevents the leakage and waste of cooling water, but also extends the service life of the connecting member and reduces the maintenance cost.

[0021] Optionally, a manufacturing method of a converter under-furnace slag pit device, the manufacturing method includes the following steps:

[0022] According to the design drawings, excavate the foundation pit of the slag pit body at the predetermined position, embed the embedded plate and the fixed column on the side wall of the slag pit body, and carry out concrete pouring and molding for the slag pit body;

[0023] Install the side plates on the side wall of the slag pit body in sequence according to the design requirements. The side plates in the shape of a right-angled trapezoid are installed at both ends of the slag pit body. At the same time, install the fixing parts;

[0024] Install the front end plate and the rear end plate on the front end and the rear end of the slag pit body in an inclined manner according to the design requirements, forming a flared opening with the side plates;

[0025] Install the bottom plates on the bottom wall of the slag pit body in sequence according to the design requirements. The inclined surface of the bottom plate presses the side plates on both sides;

[0026] When installing the bottom plates, the raised strips and the docking grooves between adjacent bottom plates are docked to ensure the unobstructed flow channel;

[0027] Install the water inlet pipe and the drain pipe on the specified bottom plate, and connect the other ends of the water inlet pipe and the drain pipe to the water supply equipment;

[0028] Conduct a leak detection on the cavity structure and the circulation channel of the bottom plate to ensure no leakage;

[0029] Conduct a comprehensive inspection on the entire slag pit device to ensure that all components are correctly and firmly installed and meet the design requirements.

[0030] By adopting the above technical solution, this manufacturing method details the installation steps and processes of the slag pit device under the converter, including key steps such as the excavation of the foundation pit, the installation of embedded parts, the installation of side plates, front end plates, rear end plates and bottom plates. This standardized manufacturing method not only improves the construction efficiency and quality, but also ensures the structural integrity and functionality of the slag pit device. At the same time, the introduction of steps such as leak detection and comprehensive inspection also ensures the safety and reliability of the slag pit device.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] 1. By installing a number of side plates on both sides of the slag pit body, and using fixing parts to achieve a firm connection between the side plates, as well as the inclined installation of the front end plate, rear end plate and side plates and the installation of the bottom plate, a solid slag pit structure is formed. This design not only enhances the overall stability of the slag pit, but also significantly improves its high-temperature resistance, effectively resisting the impact of high-temperature molten slag and molten steel generated during the converter smelting process.

[0033] 2. A cavity structure is opened in the bottom plate, and water flow circulation is achieved through the water inlet pipe and the drain pipe, effectively reducing the temperature of the bottom plate and preventing the erosion of the slag pit foundation by high temperature. At the same time, the inclined design of the bottom plate not only enhances the structural stability, but also facilitates the discharge and cleaning of slag materials. In addition, the thickness selection of the bottom plate (180mm - 250mm) ensures its sufficient strength and durability, extending the service life of the slag pit.

[0034] 3. The manufacturing method of the present invention includes steps such as excavating the foundation pit, embedding embedded plates and fixing columns, and performing concrete pouring and molding. The operation is simple and efficient, easy to implement, and the installation process of each component is clear and definite, ensuring the stability and functionality of the entire slag pit device. At the same time, the standardization and process of the manufacturing method also improve the production efficiency and product quality. Brief Description of the Drawings

[0035] Figure 1 It is a schematic top view structure diagram of the slag pit device of the present invention;

[0036] Figure 2 It is a schematic cross-sectional structure diagram of the slag pit device of the present invention;

[0037] Figure 3 Schematic diagram of the connection structure between the side plate and the fixing member of the present invention;

[0038] Figure 4 Schematic three-dimensional structure diagram of the pressing plate of the present invention;

[0039] Figure 5 Schematic three-dimensional structure diagram of the bottom plate of the present invention;

[0040] Figure 6 Schematic diagram of the cross-sectional connection structure of the bottom plate of the present invention.

[0041] In the figure: 1, slag pit body; 2, side plate; 3, fixing member; 31, embedded plate; 32, fixing column; 33, installation groove; 34, pressing plate; 35, connection hole; 36, fastening bolt; 4, front end plate; 5, rear end plate; 6, bottom plate; 7, cavity structure; 8, water inlet pipe; 9, drain pipe; 10, connecting member; 101, raised strip; 102, docking groove; 103, flow channel; 104, high-temperature resistant rubber pad. Specific embodiments

[0042] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 of the present invention.

[0044] Such as Figure 1As shown in FIGS. 1-6, the specific solution of the embodiment is as follows: A converter bottom slag pit device includes a slag pit body 1. The slag pit body 1 serves as the main structure of the entire slag pit device. The slag pit body 1 bears the functions of storing and cooling the slag, ensuring that the slag can be safely and orderly accumulated in the designated area, facilitating subsequent treatment and cleaning. On both sides of the side wall of the slag pit body 1, a number of side plates 2 are respectively installed. The side plates 2 are used to enclose the side wall of the slag pit body 1 to prevent slag overflow, and at the same time avoid the slag pit body 1 being eroded and collapsed by liquid slag and molten steel, resulting in the exposure of the steel bars of the slag pit body 1 and the inability of the slag pit body 1 to be used normally. A number of the side plates 2 are respectively in the shape of a parallelogram and a right trapezoid. The right trapezoid-shaped side plates 2 are distributed at both ends of the side wall of the slag pit body 1. The thickness of a number of the side plates 2 is 120 mm - 180 mm. The design of the side plates 2 enhances the stability of the side wall and reduces the deformation caused by the impact of the slag. The design of the right trapezoid-shaped side plates 2 facilitates the smooth transition with the front end plate 4, the rear end plate 5 and the bottom plate 6, reduces the slag accumulation dead angle, and is convenient for cleaning. The thickness design of the side plates 2 ensures the strength and durability of the side plates 2, which can not only resist the impact and wear of the slag, but also control the material cost, achieving the balance between economy and practicability;

[0045] Between a number of adjacent side plates 2, fixing members 3 are respectively provided. The fixing members 3 include a number of embedded plates 31 embedded in the slag pit body 1. On a number of the embedded plates 31, a pair of fixing columns 32 are respectively installed. Between adjacent side plates 2, installation grooves 33 are respectively opened. A pressing plate 34 is provided in the installation groove 33. The installation groove 33 is used to accommodate the pressing plate 34, and the pressing plate 34 is fixed on the side plate 2 through connection holes 35 and fastening bolts 36, further strengthening the side plate 2. By providing additional fixing points, the overall stability of the side plate 2 is enhanced. Due to the design of the pressing plate 34, the adjacent side plates 2 can be fixed. A number of connection holes 35 with docked positions are respectively opened on the installation groove 33 and the pressing plate 34. A pair of fixing columns 32 pass through the connection holes 35. At one end of a pair of the fixing columns 32 away from the embedded plate 31, fastening bolts 36 are respectively installed. The thickness of the pressing plate 34 is adapted to the thickness of the installation groove 33. The fastening bolts 36 are located on the pressing plate 34. The fixing member 3 can firmly fix the side plate 2 on the side wall of the slag pit body 1. Through the combination of the embedded plate 31, the fixing column 32, the pressing plate 34 and the fastening bolt 36, the stable installation of the side plate 2 is realized, preventing the side plate 2 from loosening or falling off, and ensuring the overall stability of the slag pit device.

[0046] The front end and the rear end of the slag pit body 1 are respectively provided with a front end plate 4 and a rear end plate 5. The front end plate 4 and the rear end plate 5 are respectively trapezoidal. The front end plate 4, the rear end plate 5 and the side plate 2 are installed on the side wall of the slag pit body 1 in an inclined shape. The upper and lower ends of the front end plate 4, the rear end plate 5 and the side plate 2 are respectively inclined surfaces. The front end plate 4, the rear end plate 5 and the side plate 2 together form the front end and the rear end of the slag pit body 1. The inclined installation is beneficial to slag cleaning. A plurality of bottom plates 6 are installed on the bottom wall of the slag pit body 1. The bottom plates 6 are installed on the bottom wall of the slag pit body 1 to support the slag and prevent it from penetrating to the ground, providing a firm support surface and at the same time helping the concentration and cleaning of the slag. One side of a plurality of the bottom plates 6 close to the side plate 2 is respectively an inclined surface. The thicknesses of a plurality of the bottom plates 6 are respectively 180 mm - 250 mm. The design of the inclined surface can squeeze the side plates 2 on both sides, providing a supporting force for the side plates 2. The design of the thickness ensures that the bottom plates 6 have sufficient strength and durability to prevent the bottom plates 6 from being damaged due to the high temperature and impact of the slag.

[0047] A cavity structure 7 is respectively opened in a plurality of the bottom plates 6. A water inlet pipe 8 and a drain pipe 9 connected to the cavity structure 7 are respectively provided on two of the bottom plates 6. The cavity structure 7 is used to cool the bottom plates 6. The water inlet pipe 8 is used to introduce cooling water, and the drain pipe 9 is used to discharge the heated water. The temperature of the bottom plates 6 is reduced by circulating the cooling water to prevent damage or deformation due to high temperature. Both the water inlet pipe 8 and the drain pipe 9 are connected to a water supply device. A connecting member 10 is respectively provided between adjacent bottom plates 6. The connecting member 10 includes a raised plate strip 101 and a docking groove 102 installed between adjacent bottom plates 6. The raised plate strip 101 and the docking groove 102 are mutually docked. High-temperature resistant rubber pads 104 are respectively installed on the upper and lower surfaces of the raised plate strip 101. A flow channel 103 connected to the cavity structure 7 is respectively opened on the raised plate strip 101 and the docking groove 102. A plurality of the connecting members 10 connect adjacent cavity structures 7;

[0048] When installing the drain pipe 9 and the water inlet pipe 8, the following method can be adopted. First, install the bottom plate 6 with the water inlet pipe 8. During the installation process, connect the water inlet pipe 8 to the pipeline reserved by the water supply device, and then install the remaining bottom plates 6 in sequence. When installing the last bottom plate 6 with the drain pipe 9, push the bottom plate 6 with the drain pipe 9 into the reserved installation slot (the installation slot can be reserved when designing the slag pit body 1, and the installation slot is located on the front end face of the slag pit body 1, and the specifications of the installation slot are the same as those of the bottom plate 6), connect the drain pipe 9 to the connecting pipe reserved by the water supply device. After connection, push the bottom plate 6 horizontally towards the water inlet pipe 8 end until the bottom plate 6 with the drain pipe 9 is docked with the adjacent bottom plate 6, and finally install the front end plate 4;

[0049] The connecting member 10 can connect adjacent bottom plates 6 to form a continuous cavity structure 7, ensuring that the cooling water can flow smoothly throughout the bottom plate 6 system, improving the cooling efficiency. The high-temperature resistant rubber pads 104 are installed on the upper and lower surfaces of the raised strip 101 for sealing and buffering, preventing the leakage of cooling water, and at the same time reducing the friction and noise between the bottom plates 6.

[0050] A manufacturing method of a slag pit device under a converter, the manufacturing method comprising the following steps:

[0051] At a predetermined position, according to the specifications and requirements of the design drawings, excavate the foundation pit of the slag pit body 1. During the excavation process, it is necessary to ensure that the bottom of the pit is flat and the pit wall is inclined to facilitate subsequent concrete pouring and installation of the side plate 2;

[0052] At a predetermined position on the side wall of the foundation pit, install the embedded plate 31 and the fixed column 32. The embedded plate 31 needs to be fixed on the pit wall flatly and firmly, and the fixed column 32 needs to be installed vertically and accurately on the embedded plate 31 to ensure the accuracy and stability of the subsequent installation of the side plate 2;

[0053] After the installation of the embedded parts is completed, carry out concrete pouring. During the pouring process, it is necessary to ensure that the concrete is uniform and dense, without air bubbles and cavities. At the same time, it is necessary to pay attention to controlling the pouring speed to avoid excessive pressure on the embedded parts by the concrete, resulting in their displacement or damage;

[0054] After the concrete has solidified, install the side plates 2 on the side walls of the slag pit body 1 in sequence according to the design requirements. During the installation process, it is necessary to ensure that the fixed column 32 passes through the connection hole 35 on the side plate 2. The right-angled trapezoidal side plates 2 need to be installed at both ends of the slag pit body 1 to ensure a smooth transition with the front end plate 4, the rear end plate 5 and the bottom plate 6. During the installation process, it is necessary to ensure that the side plate 2 fits closely with the side wall and the gaps between adjacent side plates 2 are uniform;

[0055] Install the pressing plate 34 in the installation groove 33 between adjacent side plates 2, fix the pressing plate 34 on the side plate 2, and connect the pressing plate 34 and the side plate 2 with the fixed column 32 on the embedded plate 31 through the connection hole 35 and the fastening bolt 36. During the installation process, it is necessary to ensure that the thickness of the pressing plate 34 is adapted to the installation groove 33 and the fastening bolt 36 is tightened in place to enhance the overall stability of the side plate 2;

[0056] Install the front end plate 4 and the rear end plate 5 obliquely at the front and rear ends of the slag pit body 1 according to the design requirements. During the installation process, it is necessary to ensure that a flared opening is formed between the front end plate 4, the rear end plate 5 and the side plate 2 to facilitate the outflow and cleaning of the slag;

[0057] On the bottom wall of the slag pit body 1, the bottom plates 6 are successively installed according to the design requirements. The bottom plates 6 need to be fixed on the bottom wall flatly and firmly, and the gaps between adjacent bottom plates 6 need to be sealed with the connecting pieces 10. During the installation process, it is necessary to ensure that the inclined surfaces of the bottom plates 6 press against the side plates 2 on both sides to provide support for them. At the same time, it is necessary to ensure that the convex strip 101 is accurately docked with the docking groove 102, and the flow channel 103 is unobstructed;

[0058] Install the bottom plates 6 with the water inlet pipe 8 and the drain pipe 9 on both sides, and connect the other ends of the water inlet pipe 8 and the drain pipe 9 to the water supply equipment to ensure that the cooling system can operate smoothly. During the installation process, it is necessary to ensure that the pipeline connections are tight and there is no leakage;

[0059] After the installation of the water inlet pipe 8 and the drain pipe 9 is completed, conduct a leak detection on the cavity structure 7 of the bottom plate 6 and the flow channel 103. After ensuring no leakage, start the water supply equipment to test the operation effect of the cooling system.

[0060] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slag pit device under a converter furnace, characterized in that: It includes a slag pit body, and the side walls on both sides of the slag pit body are respectively installed with a plurality of side panels, and fixing parts are respectively provided between the plurality of adjacent side panels. The front end and the rear end of the slag pit body are respectively provided with a front end panel and a rear end panel, and the bottom wall of the slag pit body is installed with a plurality of bottom plates, and cavity structures are respectively opened in the plurality of bottom plates, and two of the bottom plates are respectively provided with a water inlet pipe and a drain pipe connected with the cavity structure, and connecting parts are respectively provided between adjacent bottom plates, and the plurality of connecting parts are used to connect adjacent cavity structures.

2. The slag pit device under a converter according to claim 1, characterized in that: The side panels are in the shape of a parallelogram and a right-angled trapezoid, respectively. The right-angled trapezoidal side panels are distributed at both ends of the side wall of the slag pit body. The thickness of the side panels is 120 mm-180 mm.

3. The slag pit device under a converter according to claim 1, characterized in that: The fixing device includes a plurality of embedded plates embedded in the slag pit body, a pair of the fixing columns are respectively installed on the plurality of embedded plates, mounting grooves are respectively provided between adjacent side plates, a pressing plate is provided in the mounting grooves, a plurality of connecting holes for docking are respectively provided on the mounting grooves and the pressing plates, a pair of the fixing columns pass through the connecting holes, and a pair of the fixing columns are respectively installed with fastening bolts at one end away from the embedded plates.

4. A converter slag pit device and a manufacturing method thereof according to claim 3, characterized in that: The thickness of the pressing plate matches the thickness of the mounting groove, and the fastening bolt is located on the pressing plate.

5. The slag pit device under a converter according to claim 1, characterized in that: The front end plate and the rear end plate are respectively trapezoidal in shape, and the front end plate, the rear end plate and the side plate are installed on the side wall of the slag pit body in an inclined state, and the upper end and the lower end of the front end plate, the rear end plate and the side plate are respectively inclined surfaces.

6. The slag pit device under a converter according to claim 1, characterized in that: One side of the plurality of bottom plates close to the side plates is inclined, and the thickness of the plurality of bottom plates is 180 mm-250 mm.

7. The slag pit device under a converter according to claim 1, characterized in that: The connecting member includes a raised strip and a docking groove installed between adjacent bottom plates, the raised strip and the docking groove are docked with each other, and the raised strip and the docking groove are respectively provided with a flow channel connected to the cavity structure.

8. The slag pit device under a converter according to claim 7, characterized in that: The upper and lower surfaces of the raised strips are respectively provided with high temperature resistant rubber pads.

9. A method for manufacturing a slag pit device under a converter according to any one of claims 1 to 8, characterized in that: The preparation method comprises the following steps: According to the design drawings, a foundation pit of the slag pit body is excavated at a predetermined position, the embedded plate and the fixed column are embedded in the side wall of the slag pit body, and the slag pit body is cast with concrete; The side panels are sequentially installed on the side walls of the slag pit body according to the design requirements, and the right-angle trapezoidal side panels are installed at both ends of the slag pit body. At the same time, the fixing parts are installed; The front end plate and the rear end plate are installed obliquely at the front end and the rear end of the slag pit body according to design requirements to form a bell mouth between the front end plate and the side plate; The bottom plate is installed on the bottom wall of the slag pit in sequence according to the design requirements, and the inclined surface of the bottom plate presses the side plates on both sides; When the bottom plate is installed, the protruding strips between adjacent bottom plates are butted against the butt grooves to ensure that the flow channel is unobstructed; The water inlet pipe and the drain pipe are installed on the designated bottom plate, and the other ends of the water inlet pipe and the drain pipe are connected to the water supply equipment; Conducting water leakage detection on the cavity structure and the flow channel of the bottom plate to ensure that there is no leakage; Carry out a comprehensive inspection of the entire slag pit device to ensure that all components are installed correctly and firmly and meet the design requirements.

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