Practical long-service-life middle furnace cover of electric arc furnace

Abstract

The utility model relates to the field of refractory materials, and discloses a practical long-life middle furnace cover of an electric arc furnace, which comprises a middle furnace cover, the outer wall of the middle furnace cover is fixedly connected with a hollow shell, the outer wall of the hollow shell is fixedly connected with a heat dissipation shell, the heat dissipation shell is internally provided with a filter screen, the heat dissipation shell is internally fixedly connected with a fixed plate, and the fixed plate is fixedly connected with the outer wall of the hollow shell. A motor is fixedly connected to the top of the fixing plate, a rotating rod is fixedly connected to the output end of the motor, a sliding block is rotatably connected to one side of the outer wall of the rotating rod, a connecting rod is slidably connected to the interior of the sliding block, a fixing frame is fixedly connected to the bottom of the connecting rod, and an industrial fan is fixedly connected to the interior of the fixing frame. The middle furnace cover is cooled, heat on the surface of the furnace cover is taken away in time, the temperature gradient is reduced, thermal stress is reduced, the problem that the middle furnace cover is prone to being damaged due to the fact that the temperature is too high for a long time is solved, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of refractory materials, in particular to a furnace cover in an electric arc furnace with a long practical life. Background Art

[0002] The middle furnace cover is a device that uses the principle of electric arc heating to carry out metal melting or heat treatment. It is widely used in the metallurgical industry for melting and refining various metals and alloys, such as steel, aluminum alloy, copper alloy, etc. The basic working principle of the middle furnace cover is to heat and melt the metal through the high temperature generated by the electric arc between two electrodes. One of the main functions of the furnace cover is to protect the molten pool inside the middle furnace cover from the influence of the external environment.

[0003] The existing electric arc furnace middle furnace cover has certain characteristics to ensure the normal operation and long-term stability of the furnace. It needs to be able to withstand high temperature environments because the internal temperature of the middle furnace cover can be as high as thousands of degrees Celsius when it is working. High-quality furnace covers usually use high-temperature resistant materials, such as refractory bricks or special heat-resistant alloy materials to ensure that they do not crack or deform under high temperature conditions.

[0004] However, the existing electric arc furnace cover does not have sufficient cooling measures in a high temperature environment. Long-term heating will cause the thermal stress and thermal fatigue of the material to increase, thereby shortening the service life of the furnace cover. This may increase the frequency of maintenance and replacement of the furnace cover, increase production costs and downtime. Therefore, a practical electric arc furnace cover with a long service life is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a furnace cover in an electric arc furnace with a long practical life, aiming to improve the problem that the prior art cannot perform cooling, resulting in a short service life.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A furnace cover of an electric arc furnace with a long practical life comprises a furnace cover, wherein the outer wall of the furnace cover is fixedly connected to a hollow shell, the outer wall of the hollow shell is fixedly connected to a heat dissipation shell, a filter is arranged inside the heat dissipation shell, a fixing plate is fixedly connected inside the heat dissipation shell, a motor is fixedly connected to the top of the fixing plate, a rotating rod is fixedly connected to the output end of the motor, a slider is rotatably connected to one side of the outer wall of the rotating rod, a connecting rod is slidably connected inside the slider, a fixing frame is fixedly connected to the bottom of the connecting rod, an industrial fan is fixedly connected inside the fixing frame, a fixing column is rotatably connected to the bottom of the fixing frame, the bottom of the fixing column is fixedly connected to the inside of the heat dissipation shell, a moving component is arranged on the top of the filter, and the moving component acts to move the filter;

[0008] As a further description of the above technical solution:

[0009] The moving assembly includes a handle, the bottom of which is fixedly connected to the top of the filter screen;

[0010] As a further description of the above technical solution:

[0011] A slide rail is provided inside the heat dissipation housing, and the outer wall of the filter is slidably connected to the inside of the slide rail;

[0012] As a further description of the above technical solution:

[0013] A connecting plate is fixedly connected to the top of the heat dissipation housing, and a fixed limiting groove is fixedly connected to the top of the connecting plate;

[0014] As a further description of the above technical solution:

[0015] A threaded column is threadedly connected inside the fixed limiting groove, and a moving block is slidably connected inside the fixed limiting groove;

[0016] As a further description of the above technical solution:

[0017] The moving block is internally rotatably connected to the outer wall of the threaded column, and the outer wall of the moving block is slidably connected to a roller;

[0018] As a further description of the above technical solution:

[0019] Both ends of the roller are rotatably connected to a rotating plate, and the bottom of the rotating plate is fixedly connected to a fixture;

[0020] As a further description of the above technical solution:

[0021] The outer wall of the rotating plate is rotatably connected with a fixing block, and the bottom of the fixing block is fixedly connected to the top of the connecting plate.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, the fan realizes its swinging function by starting the motor. When the motor is started, the connecting rod, the slider, the rotating rod and other structures will be linked to realize the cooling of the central furnace cover, take away the heat on the surface of the furnace cover in time, reduce the temperature gradient, reduce thermal stress, solve the problem that the central furnace cover is easily damaged due to long-term high temperature, and improve the service life of the device.

[0024] 2. In the utility model, the fixing plate realizes its rotation function by rotating the threaded column. When the threaded column is rotated, the structures such as the rotating plate, the roller and the moving block will be linked accordingly to fix or replace the filter screen, ensuring that it maintains a stable position and state during use, solving the problem of damage to the filter screen due to airflow shaking and improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional schematic diagram of a furnace cover in an electric arc furnace with a long practical life proposed by the utility model;

[0026] Figure 2 This is a schematic diagram of the structure inside the heat dissipation shell of a furnace cover in an electric arc furnace with a long practical life proposed by the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of a slider of a furnace cover in an electric arc furnace with a long practical life proposed by the utility model;

[0028] Figure 4 The utility model provides a structural schematic diagram of the top of a connecting plate of a furnace cover in an electric arc furnace with a long practical life.

[0029] Legend:

[0030] 1. Hollow shell; 2. Filter; 3. Middle furnace cover; 4. Heat dissipation shell; 5. Fixed frame; 6. Industrial fan; 7. Fixed plate; 8. Motor; 9. Fixed column; 10. Connecting rod; 11. Sliding block; 12. Turning rod; 13. Connecting plate; 14. Fixed block; 15. Fixing device; 16. Rotating plate; 17. Roller; 18. Moving block; 19. Threaded column; 20. Fixed limiting groove; 21. Slide rail; 22. Handle. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1 , Figure 2 and Figure 3The utility model provides an embodiment: a furnace cover of an electric arc furnace with a long practical life, including a furnace cover 3, an outer wall of the furnace cover 3 is fixedly connected with a hollow shell 1, an outer wall of the hollow shell 1 is fixedly connected with a heat dissipation shell 4, a filter screen 2 is arranged inside the heat dissipation shell 4, a fixing plate 7 is fixedly connected inside the heat dissipation shell 4, a motor 8 is fixedly connected to the top of the fixing plate 7, a rotating rod 12 is fixedly connected to the output end of the motor 8, a slider 11 is rotatably connected to one side of the outer wall of the rotating rod 12, a connecting rod 10 is slidably connected inside the slider 11, a fixing frame 5 is fixedly connected to the bottom of the connecting rod 10, an industrial fan 6 is fixedly connected inside the fixing frame 5, a fixing column 9 is rotatably connected to the bottom of the fixing frame 5, and the bottom of the fixing column 9 is fixedly connected to the inside of the heat dissipation shell 4, a moving component is arranged on the top of the filter screen 2, and the moving component acts to move the filter screen 2.

[0033] Specifically, the motor 8 is started, and the motor 8 drives the rotating rod 12 to rotate, and then the rotating rod 12 drives the slider 11 to rotate, and then the slider 11 drives the connecting rod 10 to swing, and then the connecting rod 10 drives the fixing frame 5 to swing, thereby driving the industrial fan 6 to swing. Since the interior of the hollow shell 1 is a hollow design, the internal air flow can be promoted, which helps to dissipate heat and maintain a stable temperature of the furnace body. At the same time, the swing of the fan may be to increase the ventilation effect so that the air can circulate more effectively, which can prevent dead corners or local overheating in the furnace body and ensure the temperature uniformity in the furnace. In addition, the operating parameters of the fan, such as wind speed and swing frequency, are set to achieve the best cooling effect. Under normal circumstances, a higher wind speed and an appropriate swing frequency can effectively take away the heat from the surface of the furnace cover.

[0034] Reference Figure 1 The moving assembly includes a handle 22 , and the bottom of the handle 22 is fixedly connected to the top of the filter screen 2 .

[0035] Specifically, the filter screen 2 can be conveniently moved by the handle 22, so that the operator can easily grasp and move the filter screen 2 without the need for additional tools or equipment. This convenience enables the operation to be completed quickly when the position of the filter screen 2 needs to be moved or adjusted.

[0036] Reference Figure 1 and Figure 4A slide rail 21 is provided inside the heat dissipation shell 4, and the outer wall of the filter 2 is slidably connected to the inside of the slide rail 21. A connecting plate 13 is fixedly connected to the top of the heat dissipation shell 4, and a fixed limiting groove 20 is fixedly connected to the top of the connecting plate 13. A threaded column 19 is threadedly connected inside the fixed limiting groove 20, and a moving block 18 is slidably connected inside the fixed limiting groove 20. The moving block 18 is rotatably connected to the outer wall of the threaded column 19, and a roller 17 is slidably connected to the outer wall of the moving block 18. Both ends of the roller 17 are rotatably connected to a rotating plate 16, and a fixture 15 is fixedly connected to the bottom of the rotating plate 16. The outer wall of the rotating plate 16 is rotatably connected to a fixed block 14, and the bottom of the fixed block 14 is fixedly connected to the top of the connecting plate 13.

[0037] Specifically, the threaded column 19 is rotated, and the rotating block 18 connected to the rotating block 18 is driven to move through the threaded column 19, and then the roller 17 is driven to rotate through the moving block 18, and then the rotating plate 16 is driven to rotate through the roller 17, and then the fixing device 15 is driven to rotate through the rotating plate 16, and the filter 2 is fixed or easily replaced. According to the required filtering effect and the air volume requirement of the fan, a suitable mesh size is selected. Generally, a larger mesh can provide a better ventilation effect, while a smaller mesh can effectively prevent large particles from entering. At the same time, fixing the filter 2 can ensure that it maintains a stable position and state during use, and will not be displaced or moved due to fluid impact or other external forces, thereby ensuring that the filter 2 can effectively perform filtering operations and reduce accidental risks during operation. In the flow of liquid or gas, if the filter 2 is not firmly fixed, it may be displaced or crushed, causing equipment damage or workplace safety problems. Therefore, firmly fixing the filter 2 can reduce such risks.

[0038] Working principle: the fixedly connected filter screen 2 is driven by the handle 22 to be placed inside the sliding rail 21 of the sliding connection, and then the threaded column 19 is rotated, and the threaded column 19 is rotated inside the threaded fixed limiting groove 20 to drive the rotatably connected moving block 18 to slide inside the fixed limiting groove 20 of its sliding connection, and then the slidingly connected roller 17 is driven to rotate by the moving block 18, and then the rotatably connected rotating plate 16 is driven to rotate on the outer wall of the fixed block 14 of its rotatable connection by the roller 17, and at the same time, the fixedly connected fixture 15 is driven to rotate by the rotating plate 16, so as to fix and replace the filter screen 2, and then the motor 8 is started, and the fixedly connected rotating rod 12 is driven to rotate by the motor 8, and then the rotatably connected slider 11 is driven by the rotating rod 12 to slide on the outer wall of the connecting rod 10 of its sliding connection, and at the same time, the connecting rod 10 is driven to swing, and then the fixedly connected fixing frame 5 is driven by the connecting rod 10 to swing on the top of the fixed column 9 of its rotatable connection, thereby driving the industrial fan 6 to swing, cool the furnace cover 3 and make air flow in the hollow inside of the hollow shell 1.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A middle furnace cover of an electric arc furnace with a long practical life, comprising a middle furnace cover (3), characterized in that: The outer wall of the middle furnace cover (3) is fixedly connected to a hollow shell (1), the outer wall of the hollow shell (1) is fixedly connected to a heat dissipation shell (4), a filter (2) is arranged inside the heat dissipation shell (4), a fixing plate (7) is fixedly connected inside the heat dissipation shell (4), a motor (8) is fixedly connected to the top of the fixing plate (7), a rotating rod (12) is fixedly connected to the output end of the motor (8), a sliding block (11) is rotatably connected to one side of the outer wall of the rotating rod (12), a connecting rod (10) is slidably connected inside the sliding block (11), a fixing frame (5) is fixedly connected to the bottom of the connecting rod (10), an industrial fan (6) is fixedly connected to the inside of the fixing frame (5), a fixing column (9) is rotatably connected to the bottom of the fixing frame (5), the bottom of the fixing column (9) is fixedly connected to the inside of the heat dissipation shell (4), and a moving component is arranged on the top of the filter (2), and the moving component acts to move the filter (2).

2. The arc furnace cover with long practical life according to claim 1, characterized in that: The moving assembly comprises a handle (22), the bottom of the handle (22) being fixedly connected to the top of the filter screen (2).

3. The arc furnace cover with long practical life according to claim 1, characterized in that: A slide rail (21) is provided inside the heat dissipation housing (4), and the outer wall of the filter screen (2) is slidably connected inside the slide rail (21).

4. The arc furnace cover with long practical life according to claim 3, characterized in that: A connecting plate (13) is fixedly connected to the top of the heat dissipation housing (4), and a fixed limiting groove (20) is fixedly connected to the top of the connecting plate (13).

5. The arc furnace cover with long practical life according to claim 4, characterized in that: The fixed limiting groove (20) is internally threadedly connected to a threaded column (19), and the fixed limiting groove (20) is internally slidably connected to a moving block (18).

6. The arc furnace cover with long practical life according to claim 5, characterized in that: The interior of the moving block (18) is rotatably connected to the outer wall of the threaded column (19), and the outer wall of the moving block (18) is slidably connected to a roller (17).

7. The arc furnace cover with long practical life according to claim 6, characterized in that: Both ends of the roller (17) are rotatably connected to a rotating plate (16), and the bottom of the rotating plate (16) is fixedly connected to a fixing device (15).

8. The arc furnace cover with long practical life according to claim 7, characterized in that: The outer wall of the rotating plate (16) is rotatably connected to a fixed block (14), and the bottom of the fixed block (14) is fixedly connected to the top of the connecting plate (13).

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