High-temperature protection device for electric arc furnace

By introducing PLC controllers and temperature sensors into the arc furnace, combined with the motor drive system and electric telescopic rod, the automatic high-temperature protection of the arc furnace is achieved, and the problems of energy waste and equipment damage at high temperatures are solved, extending the service life and improving safety.

CN223064338UActive Publication Date: 2025-07-04HAICHENG CITY ZHONGHAO MAGNESIUM CO LTD
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Patent Information

Application Number
CN202422106648.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-29
Publication Date
2025-07-04
Estimated Expiration
2034-08-29

AI Technical Summary

Technical Problem

The existing arc furnace lacks high-temperature protection function at high temperatures, resulting in waste of energy and damage to equipment, reducing service life.

Method used

A high-temperature protection device for arc furnaces is designed to detect the temperature in the furnace through a PLC controller and a temperature sensor, and the position of the temperature sensor is adjusted by a motor drive screw and gear system, and the arc operation is automatically stopped at high temperatures. Combined with the electric telescopic rod to control the opening and closing of the cover plate to achieve automatic high-temperature protection.

Benefits of technology

Effectively prevent the arc furnace from continuing to work at high temperatures, save energy, extend the equipment life, reduce manual operation, and improve safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The high-temperature protection device for the electric arc furnace comprises a furnace body, a cover plate is arranged at the top of the furnace body, a connecting ring is movably connected to one side of the cover plate, a first motor is arranged on one side of the connecting ring, a gear is fixedly connected to the output end of the first motor, a gear ring is meshed with one side of the gear, and the gear ring is fixedly connected with the output end of the first motor. The outer side of the gear ring is fixedly connected with a connecting ring, the left side of the connecting ring is fixedly connected with a fixing plate, the bottom of the fixing plate is fixedly connected with a second motor, the output end of the second motor is fixedly connected with a lead screw, the surface of the lead screw is in threaded connection with a threaded cylinder, and the top of the threaded cylinder is fixedly connected with a connecting frame. According to the utility model, a temperature value is set through the external PLC controller, and then the temperature sensor is started, so that the temperature value of the inner cavity of the furnace body is detected, and after the detected temperature value is higher than the set value, the PLC controller can control the electric arc rod to stop working, thereby facilitating high-temperature protection.
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Description

Technical Field

[0001] The utility model relates to the technical field of electric arc furnaces, in particular to a high-temperature protection device for an electric arc furnace. Background Technique

[0002] An electric arc furnace mainly uses the high temperature generated by an electrode arc to smelt ores, metals, steel and other materials. The temperature inside the electric arc furnace can reach more than 2000 °C. The scrap steel raw materials are melted by means of arc radiation, temperature convection and heat conduction. As the use of electric arc furnaces is increasing, people's requirements for electric arc furnaces are also getting higher and higher.

[0003] The existing electric arc furnace does not have the function of high-temperature protection during use. After the temperature is higher than the critical value, it not only wastes energy, but also easily causes damage to the electric arc furnace, reduces the service life of the electric arc furnace, and cannot meet the use requirements. For this reason, we propose a high-temperature protection device for an electric arc furnace. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a high-temperature protection device for an electric arc furnace, which has the advantages of high-temperature protection, and solves the problems that the existing electric arc furnace does not have the function of high-temperature protection during use, wastes energy after the temperature is higher than the critical value, is easy to cause damage to the electric arc furnace, reduces the service life of the electric arc furnace, and cannot meet the use requirements.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A high-temperature protection device for an electric arc furnace, including a furnace body, a cover plate is arranged on the top of the furnace body, a connecting ring is movably connected to one side of the cover plate, a first motor is arranged on one side of the connecting ring, the output end of the first motor is fixedly connected with a gear, a toothed ring is meshed on one side of the gear, the outer side of the toothed ring is fixedly connected with the connecting ring, a fixing plate is fixedly connected to the left side of the connecting ring, a second motor is fixedly connected to the bottom of the fixing plate, the output end of the second motor is fixedly connected with a lead screw, a threaded barrel is threadedly connected to the surface of the lead screw, a connecting frame is fixedly connected to the top of the threaded barrel, a vertical rod is fixedly connected to the bottom of the connecting frame, and a temperature sensor is fixedly connected to the bottom of the vertical rod.

[0006] Preferably, a fixing ring is fixedly connected to the middle axis of the surface of the furnace body, electric telescopic rods are fixedly connected to both sides of the bottom of the fixing ring, a support frame is fixedly connected to the top of the electric telescopic rod, and one side of the support frame is fixedly connected to the cover plate.

[0007] Preferably, a fixing frame is fixedly connected to one side of the cover plate, a connecting disc is fixedly connected to one side of the fixing frame, the right side of the top of the connecting disc is fixedly connected with the first motor, and an arc rod is fixedly connected to the middle axis of the inner cavity of the connecting disc.

[0008] Preferably, a ring groove is formed on the inner surface of the cover plate, a slider is slidably connected to the inner cavity of the ring groove, and one side of the slider is fixedly connected to the connecting ring.

[0009] Preferably, a telescopic column is fixedly connected to the rear side of the top of the fixing plate, and the top of the telescopic column is fixedly connected to the connecting frame.

[0010] Preferably, the bottom of the furnace body is fixedly connected with support legs, and the number of the support legs is four.

[0011] Preferably, a movable hole is formed in the top of the connecting ring, and a vertical rod is movably connected to the inner cavity of the movable hole.

[0012] Compared with the prior art, the utility model provides a high-temperature protection device for an electric arc furnace, which has the following beneficial effects:

[0013] 1. The utility model sets the temperature value through an external PLC controller, then starts the temperature sensor to detect the temperature value in the inner cavity of the furnace body. At the same time, the second motor is started, the lead screw is driven to rotate by the second motor, the threaded barrel is driven to move by the lead screw, the connecting frame is driven to move by the threaded barrel, the vertical rod is driven to move by the connecting frame, and the temperature sensor is driven to move by the vertical rod. When the temperature sensor can move vertically, its height can also be adjusted. The first motor is started, the gear is driven to rotate by the first motor, the toothed ring is driven to rotate by the gear, the connecting ring is driven to rotate by the toothed ring, the vertical rod is driven to rotate by the connecting ring, and the temperature sensor is driven to rotate by the vertical rod, which is convenient for adjusting the working position. After detecting that the temperature value is higher than the set value, the PLC controller will control the electric arc rod to stop working, so as to facilitate high-temperature protection.

[0014] 2. The utility model starts the electric telescopic rod, and the electric telescopic rod drives the support frame to move, and the support frame drives the cover plate to move, which is convenient for opening and closing the cover plate, avoiding the need for manual operation by staff, and saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the utility model;

[0016] Figure 2 is a three-dimensional structural diagram of the utility model;

[0017] Figure 3 is an enlarged structural diagram of part A of the utility model;

[0018] Figure 4 is a sectional structural diagram of the furnace body of the utility model.

[0019] In the figure: 1, furnace body; 2, cover plate; 3, connecting ring; 4, first motor; 5, gear; 6, gear ring; 7, fixing plate; 8, second motor; 9, lead screw; 10, threaded barrel; 11, connecting frame; 12, vertical rod; 13, temperature sensor; 14, arc rod; 15, fixing ring; 16, electric telescopic rod; 17, support frame; 18, support leg. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Secondly, the so-called "one embodiment" or "embodiment" herein refers to specific features, structures or characteristics that can be included in at least one implementation manner of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an individual or alternative embodiment that mutually excludes other embodiments. Embodiment 1:

[0022] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4As shown in the figure, the present utility model provides a high-temperature protection device for an electric arc furnace, which includes a furnace body 1. A cover plate 2 is arranged at the top of the furnace body 1. One side of the cover plate 2 is movably connected with a connecting ring 3. One side of the connecting ring 3 is provided with a first motor 4. The output end of the first motor 4 is fixedly connected with a gear 5. One side of the gear 5 is engaged with a toothed ring 6. The outer side of the toothed ring 6 is fixedly connected with the connecting ring 3. The left side of the connecting ring 3 is fixedly connected with a fixing plate 7. The bottom of the fixing plate 7 is fixedly connected with a second motor 8. The output end of the second motor 8 is fixedly connected with a lead screw 9. The surface of the lead screw 9 is threadedly connected with a threaded barrel 10. The top of the threaded barrel 10 is fixedly connected with a connecting frame 11. The bottom of the connecting frame 11 is fixedly connected with a vertical rod 12. The bottom of the vertical rod 12 is fixedly connected with a temperature sensor 13. One side of the cover plate 2 is fixedly connected with a fixing frame, and one side of the fixing frame is fixedly connected with a connecting disk. The right side of the top of the connecting disk is fixedly connected with the first motor 4. The central axis of the inner cavity of the connecting disk is fixedly connected with an electric arc rod 14. A ring groove is formed on the inner surface of the cover plate 2, and a slider is slidably connected in the inner cavity of the ring groove. One side of the slider is fixedly connected with the connecting ring 3. The rear side of the top of the fixing plate 7 is fixedly connected with a telescopic column, and the top of the telescopic column is fixedly connected with the connecting frame 11. The bottom of the furnace body 1 is fixedly connected with support legs 18, and the number of the support legs 18 is four. An activity hole is formed at the top of the connecting ring 3, and the inner cavity of the activity hole is movably connected with the vertical rod 12.

[0023] The specific function of this technical solution: Set the temperature value through an external PLC controller, and then start the temperature sensor 13 to detect the temperature value inside the furnace body 1. At the same time, start the second motor 8. The second motor 8 drives the lead screw 9 to rotate, the lead screw 9 drives the threaded barrel 10 to move, the threaded barrel 10 drives the connecting frame 11 to move, the connecting frame 11 drives the vertical rod 12 to move, and the vertical rod 12 drives the temperature sensor 13 to move. When the temperature sensor 13 can move vertically, its height can also be adjusted. Start the first motor 4. The first motor 4 drives the gear 5 to rotate, the gear 5 drives the toothed ring 6 to rotate, the toothed ring 6 drives the connecting ring 3 to rotate, the connecting ring 3 drives the vertical rod 12 to rotate, and the vertical rod 12 drives the temperature sensor 13 to rotate, which is convenient for adjusting the working position. After detecting that the temperature value is higher than the set value, the PLC controller will control the electric arc rod 14 to stop working, thus facilitating high-temperature protection. Embodiment 2:

[0024] On the basis of Embodiment 1, as shown in the present utility model Figure 1 and Figure 2 shows that a fixing ring 15 is fixedly connected to the central axis of the surface of the furnace body 1. Both sides of the bottom of the fixing ring 15 are fixedly connected with electric telescopic rods 16. The top of the electric telescopic rods 16 is fixedly connected with a support frame 17. One side of the support frame 17 is fixedly connected with the cover plate 2.

[0025] Specific functions of this technical solution: Start the electric telescopic rod 16, and the electric telescopic rod 16 drives the support frame 17 to move, and the support frame 17 drives the cover plate 2 to move, which facilitates the opening and closing of the cover plate 2, avoiding the need for manual operation by staff, saving time and effort.

[0026] Working principle: Set the temperature value through an external PLC controller, and then start the temperature sensor 13 to detect the temperature value inside the furnace body 1 cavity. At the same time, start the second motor 8, and the second motor 8 drives the lead screw 9 to rotate. The lead screw 9 drives the threaded barrel 10 to move, the threaded barrel 10 drives the connecting frame 11 to move, the connecting frame 11 drives the vertical rod 12 to move, and the vertical rod 12 drives the temperature sensor 13 to move. When the temperature sensor 13 can move vertically, its height can also be adjusted. Start the first motor 4, and the first motor 4 drives the gear 5 to rotate. The gear 5 drives the toothed ring 6 to rotate, the toothed ring 6 drives the connecting ring 3 to rotate, the connecting ring 3 drives the vertical rod 12 to rotate, and the vertical rod 12 drives the temperature sensor 13 to rotate, facilitating the adjustment of the working position. After detecting that the temperature value is higher than the set value, the PLC controller will control the arc rod 14 to stop working, thus facilitating high-temperature protection;

[0027] Start the electric telescopic rod 16, and the electric telescopic rod 16 drives the support frame 17 to move, and the support frame 17 drives the cover plate 2 to move, which facilitates the opening and closing of the cover plate 2, avoiding the need for manual operation by staff, saving time and effort.

[0028] Importantly, it should be noted that the structures and arrangements of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible on the premise of substantially not deviating from the novel teachings and advantages of the subject matter described in this application (for example, the dimensions, scales, structures, shapes and proportions of various components, and parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, color, orientation changes, etc.). For example, an element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature, number or position of discrete elements can be changed or altered. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structures that perform the recited function herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions can be made in the design, operating conditions and arrangements of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0029] In addition, to provide a concise description of the exemplary embodiments, not all features of the actual embodiments may be described (i.e., those features that are not relevant to the currently considered best mode of implementing the present utility model or those features that are not relevant to implementing the present utility model).

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting the protection scope of the present utility model. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present utility model.

Claims

1. A high-temperature protection device for an electric arc furnace, comprising a furnace body (1), characterized in that: A cover plate (2) is provided at the top of the furnace body (1). One side of the cover plate (2) is movably connected to a connecting ring (3). A first motor (4) is provided on one side of the connecting ring (3). The output end of the first motor (4) is fixedly connected to a gear (5). A gear ring (6) is meshed on one side of the gear (5). The outer side of the gear ring (6) is fixedly connected to the connecting ring (3). A fixing plate (7) is fixedly connected to the left side of the connecting ring (3). A second motor (8) is fixedly connected to the bottom of the fixing plate (7). The output end of the second motor (8) is fixedly connected to a lead screw (9). A threaded barrel (10) is threadedly connected to the surface of the lead screw (9). A connecting frame (11) is fixedly connected to the top of the threaded barrel (10). A vertical rod (12) is fixedly connected to the bottom of the connecting frame (11). A temperature sensor (13) is fixedly connected to the bottom of the vertical rod (12).

2. The high-temperature protection device for an electric arc furnace according to claim 1, wherein: A fixing ring (15) is fixedly connected to the mid-axis of the surface of the furnace body (1). Electric telescopic rods (16) are fixedly connected to both sides of the bottom of the fixing ring (15). The top of the electric telescopic rod (16) is fixedly connected to a support frame (17). One side of the support frame (17) is fixedly connected to the cover plate (2).

3. The high-temperature protection device for an electric arc furnace according to claim 1, characterized in that: A fixing frame is fixedly connected to one side of the cover plate (2). A connecting disk is fixedly connected to one side of the fixing frame. The right side of the top of the connecting disk is fixedly connected to the first motor (4). An arc rod (14) is fixedly connected to the mid-axis of the inner cavity of the connecting disk.

4. A high-temperature protection device for an electric arc furnace according to claim 1, characterized in that: A ring groove is formed on the inner surface of the cover plate (2). A slider is slidably connected to the inner cavity of the ring groove. One side of the slider is fixedly connected to the connecting ring (3).

5. The high-temperature protection device for an electric arc furnace according to claim 1, wherein: A telescopic column is fixedly connected to the rear side of the top of the fixing plate (7). The top of the telescopic column is fixedly connected to the connecting frame (11).

6. The high-temperature protection device for an electric arc furnace according to claim 1, wherein: Support legs (18) are fixedly connected to the bottom of the furnace body (1). The number of the support legs (18) is four.

7. The high-temperature protection device for an electric arc furnace according to claim 1, wherein: An activity hole is formed in the top of the connecting ring (3). The inner cavity of the activity hole is movably connected to the vertical rod (12).