A sealing device for an electric arc furnace

Abstract

This utility model discloses a sealing device for an electric arc furnace, including a base plate. The top of the base plate is fixedly connected to the electric arc furnace body, and a molten steel drain pipe is fixedly connected to the right side of the furnace body. A first electric telescopic rod is fixedly installed on the right side of the top of the base plate, and a lifting plate is fixedly connected to the output end of the first electric telescopic rod. A sealing plug is fixedly connected to the top of the lifting plate, and the surface of the sealing plug contacts the inner cavity of the molten steel drain pipe. A second electric telescopic rod is fixedly installed at the bottom of the lifting plate. This utility model allows the first electric telescopic rod on the right side of the top of the base plate to move the lifting plate up and down, enabling the sealing plug on the top of the lifting plate to be accurately inserted into the inner cavity of the molten steel drain pipe, achieving effective sealing of the drain pipe, preventing molten steel leakage, ensuring production safety and a clean working environment. A water tank, water pump, sealing plug, and regulating valve constitute a cooling circulation system.

Description

Technical Field

[0001] This utility model relates to the field of electric arc furnace technology, specifically to an electric arc furnace sealing device. Background Technology

[0002] An electric arc furnace is an electric furnace that uses the high temperature generated by an electric arc on electrodes to melt ores and metals. The energy is highly concentrated when the gas discharge forms an arc, with the arc temperature exceeding 3000℃. For smelting metals, electric arc furnaces offer greater process flexibility than other steelmaking furnaces, effectively removing impurities such as sulfur and phosphorus. The furnace temperature is easy to control, and the equipment requires a small footprint, making it suitable for smelting high-quality alloy steels.

[0003] However, existing sealing devices suffer from reduced sealing efficiency and are prone to damage during actual use due to prolonged erosion of the drain outlet by high temperatures. This makes it difficult to effectively cool down and improve sealing efficiency. Therefore, we propose an electric arc furnace sealing device. Utility Model Content

[0004] The purpose of this invention is to provide a sealing device for an electric arc furnace to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electric arc furnace sealing device, comprising a base plate, an electric arc furnace body fixedly connected to the top of the base plate, a molten steel drain pipe fixedly connected to the right side of the electric arc furnace body, a first electric telescopic rod fixedly installed on the right side of the top of the base plate, a lifting plate fixedly connected to the output end of the first electric telescopic rod, a sealing plug fixedly connected to the top of the lifting plate, the surface of the sealing plug contacting the inner cavity of the molten steel drain pipe, a second electric telescopic rod fixedly installed at the bottom of the lifting plate, a support rod fixedly connected to the output end of the second electric telescopic rod, a water tank fixedly connected to the bottom of the base plate, a water pump fixedly installed on one side of the water tank, the outlet of the water pump connected to one side of the sealing plug via a pipe, a regulating valve fixedly connected to one side of the sealing plug via a pipe, a regulating valve connected to one side of the water tank via a pipe, a cooling pipe provided in the inner cavity of the water tank, a motor fixedly installed on one side of the water tank, a rotating rod fixedly connected to the output end of the motor, and a stirring plate fixedly connected to the surface of the rotating rod.

[0006] Preferably, a battery box is fixedly connected to the top of the base plate, a storage battery is fixedly connected to the inner cavity of the battery box, and a charging port is provided at the middle of one side of the battery box. The output end of the charging port is unidirectionally electrically connected to the output end of the storage battery.

[0007] Preferably, a hydraulic cylinder is fixedly installed on one side of the electric arc furnace body by bolts, the output end of the hydraulic cylinder is fixedly connected to a top plate, and a sealing cover is provided at the bottom of the top plate.

[0008] Preferably, a water temperature sensor is fixedly installed on one side of the water tank by bolts, and the output end of the water temperature sensor is connected to an external display screen.

[0009] Preferably, support legs are fixedly connected to both the left and right sides of the bottom of the base plate, and anti-slip pads are provided on the bottom of the support legs.

[0010] Preferably, a PLC controller is fixedly mounted on the top of the base plate by bolts, and the output terminal of the PLC controller is unidirectionally electrically connected to the input terminals of the first electric telescopic rod, the second electric telescopic rod, the water pump, and the motor.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model utilizes a first electric telescopic rod on the top right side of the base plate to move the lifting plate up and down. This allows the sealing plug at the top of the lifting plate to be accurately inserted into the inner cavity of the molten steel drain pipe, effectively sealing the pipe, preventing molten steel leakage, and ensuring production safety and a clean working environment. The water tank, water pump, sealing plug, and regulating valve constitute a cooling circulation system. The water pump delivers coolant from the water tank to the sealing plug, carrying away the heat absorbed by the plug, and then returns it to the water tank through the regulating valve. This effectively reduces the temperature of the sealing plug, extends its service life, and ensures that the sealing effect is not affected by high temperatures.

[0013] 2. This utility model, through the second electric telescopic rod at the bottom of the lifting plate and the support rod connected to its output end, provides additional support force after the sealing plug is inserted into the molten steel drain pipe, enhancing the stability of the sealing plug and ensuring that it maintains a good sealing effect even under harsh environments such as high temperature and high pressure. The support legs and anti-slip pads on the left and right sides of the bottom of the base plate provide stable support for the device, preventing it from sliding or shaking during operation. The battery and charging port in the battery box can provide an independent power supply for the device, ensuring its normal operation even in the event of a power outage or without an external power source. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the hydraulic cylinder structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the rotating rod structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the water temperature sensor structure of this utility model.

[0018] In the diagram: 1. Base plate; 2. Electric arc furnace body; 3. Sealing cover; 4. Top plate; 5. Molten steel drain pipe; 6. Battery; 7. Battery box; 8. Charging port; 9. First electric telescopic rod; 10. Lifting plate; 11. PLC controller; 12. Water tank; 13. Motor; 14. Hydraulic cylinder; 15. Rotating rod; 16. Stirring plate; 17. Cooling pipe; 18. Water pump; 19. Second electric telescopic rod; 20. Support rod; 21. Regulating valve; 22. Sealing plug; 23. Water temperature sensor. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] The components of this application—1. base plate; 2. electric arc furnace body; 3. sealing cover; 4. top plate; 5. molten steel drain pipe; 6. storage battery; 7. battery box; 8. charging port; 9. first electric telescopic rod; 10. lifting plate; 11. PLC controller; 12. water tank; 13. motor; 14. hydraulic cylinder; 15. rotating rod; 16. stirring plate; 17. cooling pipe; 18. water pump; 19. second electric telescopic rod; 20. support rod; 21. regulating valve; 22. sealing plug; 23. water temperature sensor—are all general standard parts or parts known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. Example 1:

[0021] Please see Figures 1-4The following technical solution is provided, specifically disclosing: an electric arc furnace sealing device, including a base plate 1, an electric arc furnace body 2 fixedly connected to the top of the base plate 1, a molten steel drain pipe 5 fixedly connected to the right side of the electric arc furnace body 2, a first electric telescopic rod 9 fixedly installed on the right side of the top of the base plate 1, a lifting plate 10 fixedly connected to the output end of the first electric telescopic rod 9, a sealing plug 22 fixedly connected to the top of the lifting plate 10, the surface of the sealing plug 22 contacting the inner cavity of the molten steel drain pipe 5, and a second electric telescopic rod 19 fixedly installed at the bottom of the lifting plate 10. A support rod 20 is fixedly connected to the output end of the base plate 1. A water tank 12 is fixedly connected to the bottom of the base plate 1. A water pump 18 is fixedly installed on one side of the water tank 12. The water outlet of the water pump 18 is connected to one side of the sealing plug 22 through a pipe. A regulating valve 21 is fixedly connected to one side of the sealing plug 22 through a pipe. One side of the regulating valve 21 is connected to one side of the water tank 12 through a pipe. A cooling pipe 17 is provided in the inner cavity of the water tank 12. A motor 13 is fixedly installed on one side of the water tank 12. A rotating rod 15 is fixedly connected to the output end of the motor 13. A stirring plate 16 is fixedly connected to the surface of the rotating rod 15.

[0022] In actual use, the first electric telescopic rod 9 on the top right side of the base plate 1 drives the lifting plate 10 to move up and down, allowing the sealing plug 22 on the top of the lifting plate 10 to be accurately inserted into the inner cavity of the molten steel drain pipe 5, effectively sealing the molten steel drain pipe 5, preventing molten steel leakage, and ensuring production safety and a clean working environment. The water tank 12, water pump 18, sealing plug 22, and regulating valve 21 constitute a cooling circulation system. The water pump 18 delivers the coolant from the water tank 12 to the sealing plug 22, carrying away the heat absorbed by the sealing plug 22, and then returns it to the water tank 12 through the regulating valve 21. This effectively reduces the temperature of the sealing plug 22, extends its service life, and ensures that the sealing effect is not affected by high temperatures. Example 2:

[0023] Please see Figure 1 and Figure 2The following technical solution is provided, specifically disclosed: A battery box 7 is fixedly connected to the top of the base plate 1, and a storage battery 6 is fixedly connected to the inner cavity of the battery box 7. A charging port 8 is opened in the middle of one side of the battery box 7. The output end of the charging port 8 is unidirectionally electrically connected to the output end of the storage battery 6. A hydraulic cylinder 14 is fixedly installed on one side of the electric arc furnace body 2 by bolts. The output end of the hydraulic cylinder 14 is fixedly connected to the top plate 4. A sealing cover 3 is provided at the bottom of the top plate 4. A water temperature sensor 23 is fixedly installed on one side of the water tank 12 by bolts. The output end of the water temperature sensor 23 is connected to an external display screen. Support legs are fixedly connected to both the left and right sides of the bottom of the base plate 1, and anti-slip pads are provided at the bottom of the support legs. A PLC controller 11 is fixedly installed on the top of the base plate 1 by bolts. The output end of the PLC controller 11 is unidirectionally electrically connected to the input end of the first electric telescopic rod 9, the second electric telescopic rod 19, the water pump 18, and the motor 13.

[0024] In practical use, the second electric telescopic rod 19 at the bottom of the lifting plate 10 and the support rod 20 connected to its output end provide additional support after the sealing plug 22 is inserted into the molten steel drain pipe 5, enhancing the stability of the sealing plug 22 and ensuring that the sealing plug 22 can maintain a good sealing effect even in harsh environments such as high temperature and high pressure. The support legs and anti-slip pads on the left and right sides of the bottom of the base plate 1 provide stable support for the device and prevent the device from sliding or shaking during operation. The battery 6 and charging port 8 in the battery box 7 can provide an independent power supply for the device, ensuring normal operation of the device even in the event of a power outage or without an external power source.

[0025] During use: Charge the battery 6 in the battery box 7 through the charging port 8 to ensure the device has sufficient power. Inject an appropriate amount of coolant into the water tank 12 and check the connections of all components, such as the first electric telescopic rod 9, the second electric telescopic rod 19, the water pump 18, and the motor 13. Operate the PLC controller 11 to start the hydraulic cylinder 14. The output end of the hydraulic cylinder 14 pushes the top plate 4 downwards, causing the sealing cover 3 to cover the top of the electric arc furnace body 2, thus sealing the top of the electric arc furnace body 2. Operate the PLC controller 11 to start the first electric telescopic rod 9. The output end of the first electric telescopic rod 9 drives the lifting plate 10 upwards, causing the sealing plug 22 to insert into the inner cavity of the molten steel drain pipe 5. Then, start the second electric telescopic rod 19. The output end of the second electric telescopic rod 19 pushes the support rod 20 downwards, providing additional support for the sealing plug 22. The PLC controller 11 starts the water pump 18, which pumps the coolant in the water tank 12 through a pipe to the sealing plug 22. After absorbing heat from the sealing plug 22, the coolant flows back to the water tank 12 through the regulating valve 21. Simultaneously, the motor 13 starts, and its output drives the rotating rod 15 and the stirring plate 16 to rotate, ensuring thorough mixing of the coolant in the water tank 12 and maintaining a uniform temperature. The cooling pipe 17 in the water tank 12 further reduces the temperature of the coolant. The water temperature sensor 23 monitors the temperature of the coolant in the water tank 12 in real time and transmits the data to an external display screen. After the electric arc furnace production is completed, the PLC controller 11 sequentially shuts down the water pump 18, motor 13, second electric telescopic rod 19, first electric telescopic rod 9, and hydraulic cylinder 14. The hydraulic cylinder 14 moves the top plate 4 and sealing cover 3 upwards, opening the top of the electric arc furnace body 2. The first electric telescopic rod 9 moves the lifting plate 10 downwards, causing the sealing plug 22 to be pulled out of the molten steel drain pipe 5.

[0026] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0027] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A sealing device for an electric arc furnace, comprising a base plate (1), characterized in that: The top of the base plate (1) is fixedly connected to the electric arc furnace body (2), and the right side of the electric arc furnace body (2) is fixedly connected to the molten steel drain pipe (5). The right side of the top of the base plate (1) is fixedly installed with a first electric telescopic rod (9). The output end of the first electric telescopic rod (9) is fixedly connected to a lifting plate (10). The top of the lifting plate (10) is fixedly connected to a sealing plug (22). The surface of the sealing plug (22) is in contact with the inner cavity of the molten steel drain pipe (5). The bottom of the lifting plate (10) is fixedly installed with a second electric telescopic rod (19). The output end of the second electric telescopic rod (19) is fixedly connected to a support rod (20). (1) A water tank (12) is fixedly connected to the bottom. A water pump (18) is fixedly installed on one side of the water tank (12). The outlet of the water pump (18) is connected to one side of the sealing plug (22) through a pipe. A regulating valve (21) is fixedly connected to one side of the sealing plug (22) through a pipe. One side of the regulating valve (21) is connected to one side of the water tank (12) through a pipe. A cooling pipe (17) is provided in the inner cavity of the water tank (12). A motor (13) is fixedly installed on one side of the water tank (12). A rotating rod (15) is fixedly connected to the output end of the motor (13). A stirring plate (16) is fixedly connected to the surface of the rotating rod (15).

2. The sealing device for an electric arc furnace according to claim 1, characterized in that: A battery box (7) is fixedly connected to the top of the base plate (1), and a storage battery (6) is fixedly connected to the inner cavity of the battery box (7). A charging port (8) is provided at the middle of one side of the battery box (7), and the output end of the charging port (8) is unidirectionally electrically connected to the output end of the storage battery (6).

3. The sealing device for an electric arc furnace according to claim 1, characterized in that: A hydraulic cylinder (14) is fixedly installed on one side of the electric arc furnace body (2) by bolts. The output end of the hydraulic cylinder (14) is fixedly connected to a top plate (4). A sealing cover (3) is provided at the bottom of the top plate (4).

4. The sealing device for an electric arc furnace according to claim 1, characterized in that: A water temperature sensor (23) is fixedly installed on one side of the water tank (12) by bolts, and the output end of the water temperature sensor (23) is connected to an external display screen.

5. The sealing device for an electric arc furnace according to claim 1, characterized in that: The bottom of the base plate (1) is fixedly connected to the left and right sides, and the bottom of the support legs is provided with anti-slip pads.

6. The sealing device for an electric arc furnace according to claim 1, characterized in that: A PLC controller (11) is fixedly installed on the top of the base plate (1) by bolts. The output end of the PLC controller (11) is unidirectionally electrically connected to the input end of the first electric telescopic rod (9), the second electric telescopic rod (19), the water pump (18), and the motor (13).

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