Electric smelting furnace with cooling structure

Abstract

The utility model relates to the technical field of metal smelting, and specifically discloses a fused magnesia smelting furnace with a cooling structure, which comprises a smelting furnace body for magnesia processing, a protective barrel is arranged outside the smelting furnace body, an air guide groove is arranged inside the protective barrel body wall, upper pipes and lower pipes are arranged at the upper and lower ends of the protective barrel respectively corresponding to the air guide groove, and temperature detectors and valves are respectively arranged on the pipe bodies of the upper pipes and the lower pipes; in the utility model, the smelting furnace body is subjected to heat exchange through the circulating gas, and the circulating gas is rapidly cooled through the refrigerator, so that the utility model can not only conveniently and accurately control the cooling temperature, but also can realize stepless temperature control, thereby effectively cooling the smelting furnace and avoiding the risk of water cooling liquid leakage, so that the utility model is more conducive to the cooling use of the smelting furnace.

Description

Technical Field

[0001] This utility model relates to the field of metal smelting technology, and in particular to an electric fused magnesia smelting furnace with a cooling structure. Background Technology

[0002] Magnesia smelting furnaces require cooling during use. A Chinese patent application (application number 202221699848.4) discloses a cooling heat exchange device for an electro-smelting magnesia smelting furnace, comprising a staged cooling water supply system. This system includes a water supply tank, a control panel fixedly connected to one side of the tank, and an electrical connector fixedly connected to the top of the tank, electrically connected to the control panel. A heating wire is electrically connected to the bottom of the connector, extending into the water supply tank. A graded temperature sensor is fixedly connected to the top of the tank, with its bottom end connected to the interior of the tank, and electrically connected to the control panel.

[0003] While the aforementioned technology, through a control panel combined with a graded temperature sensor to control the heating wire, heats the cooling water in the water supply tank to a certain temperature, and then injects the heated cooling water into the cooling ring column, thereby reducing the furnace temperature to a level similar to the water temperature, and then lowering the gradient for the next round of cooling, resulting in a relatively gradual decrease in furnace temperature and a more gentle furnace shrinkage, the water cooling method carries the risk of leakage in actual use. Furthermore, controlling the water temperature through the heating wire requires a certain amount of time, leading to imprecise and slow temperature control, thus resulting in a slow cooling efficiency for the furnace. Therefore, to address these technical shortcomings, we propose an electrofused magnesia smelting furnace with a cooling structure. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an electric fused magnesia furnace with a cooling structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A fused magnesia smelting furnace with a cooling structure includes a furnace body for magnesia processing. A protective barrel is fitted around the furnace body. An air guide groove is provided inside the wall of the protective barrel. An upper pipe and a lower pipe are respectively provided at the upper and lower ends of the protective barrel corresponding to the air guide groove. A thermometer and a valve are respectively installed on the upper and lower pipes. The end of the lower pipe away from the protective barrel is connected to a heat exchange box via a fan. The upper end of the heat exchange box is connected to the upper pipe via a four-way pipe. The remaining two ends of the four-way pipe are respectively connected to a pressure control component and a dehumidification component. Several heat pipes are provided on one side of the heat exchange box. The ends of the heat pipes located outside the heat exchange box are connected to a heat exchange plate. Several coolers are installed on the heat exchange plate.

[0007] Preferably, the pressure control assembly includes a mounting cylinder, a linkage disc, and a top spring. The lower end of the mounting cylinder is connected to one end of a four-way pipe. The linkage disc is installed in the lower part inside the mounting cylinder, and the top spring is disposed on the upper surface of the linkage disc.

[0008] Preferably, a cover plate is installed at the upper end of the mounting cylinder, and a limiting rod is slidably provided in the middle of the cover plate, with the lower end of the limiting rod fixed in the middle of the linkage plate.

[0009] Preferably, the lower side of the cover plate and the upper side of the linkage plate are provided with slots, and the upper and lower ends of the top spring are respectively engaged in the adjacent slots.

[0010] Preferably, the dehumidification assembly includes a sealing cap and a moisture-absorbing element, the moisture-absorbing element being disposed in the remaining end of the four-way pipe, and the sealing cap being installed at the end of the four-way pipe where the moisture-absorbing element is disposed.

[0011] Preferably, the heat exchange box is provided with a plurality of guide plates, which are arranged in an alternating manner.

[0012] Preferably, a filling medium is provided between the protective barrel and the main body of the smelting furnace, and between the cooler and the heat exchange box, and the filling medium has thermal conductivity.

[0013] The beneficial effects of the fused magnesia furnace with a cooling structure proposed in this utility model are as follows:

[0014] 1. In this invention, the temperature of the circulating gas can be measured by thermometers installed on the upper and lower pipes. Specifically, the temperature difference between the gas flowing out of the protective tank and the gas entering the protective tank is measured. Then, the cooling capacity of several coolers is controlled based on this temperature difference to avoid damage to the furnace body due to sudden cooling caused by excessive temperature difference. In summary, when this solution is used, the circulating gas exchanges heat with the furnace body, and the coolers cool the circulating gas quickly and promptly. Compared with traditional water cooling methods, this solution not only allows for convenient and precise control of the cooling temperature, but also provides stepless temperature control, thus effectively cooling the furnace and avoiding the risk of coolant leakage. Therefore, this solution is more conducive to the cooling and use of the furnace.

[0015] 2. The pressure control component in this invention allows the gas inside the heat exchanger to rise, pushing the linkage plate upward. This means the linkage plate overcomes the spring force of the top spring and moves towards the cover plate. Excess gas then enters the mounting cylinder, reducing the internal pressure of the heat exchanger. Conversely, the linkage plate moves downward. This pressure control component balances the internal pressure of the heat exchanger, preventing excessive pressure increases or decreases during cooling that could damage it. The slot design also helps limit the top spring's position. The dehumidification component facilitates moisture absorption from the gas inside the heat exchanger. The guide plate guides the flow of gas inside the heat exchanger, ensuring sufficient contact between the gas and the heat pipes, thereby improving heat exchange efficiency. Attached Figure Description

[0016] Figure 1 This is an isometric schematic diagram of an electric fused magnesia smelting furnace with a cooling structure proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of an electric fused magnesia smelting furnace with a cooling structure proposed in this utility model;

[0018] Figure 3 This is a schematic diagram showing the heat exchange plate and heat exchange box of an electric fused magnesia smelting furnace with a cooling structure proposed in this utility model.

[0019] Figure 4 This is a schematic diagram of the interior of the mounting cylinder of an electric fused magnesia smelting furnace with a cooling structure proposed in this utility model.

[0020] In the diagram: 1. Main body of the smelting furnace; 2. Protective barrel; 3. Air guide duct; 4. Upper pipe; 5. Lower pipe; 6. Thermometer; 7. Valve; 8. Heat exchange box; 9. Four-way pipe; 10. Heat pipe; 11. Heat exchange plate; 12. Refrigerator; 13. Mounting cylinder; 14. Linkage plate; 15. Fan; 16. Top spring; 17. Sealing cap; 18. Moisture-absorbing component; 19. Guide plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example 1

[0023] Reference Figure 1-4A fused magnesia smelting furnace with a cooling structure includes a furnace body 1 for magnesia processing. A protective barrel 2 is fitted around the furnace body 1. An air guide groove 3 is provided inside the wall of the protective barrel 2. An upper pipe 4 and a lower pipe 5 are respectively provided at the upper and lower ends of the protective barrel 2 corresponding to the air guide groove 3. A thermometer 6 and a valve 7 are respectively installed on the upper pipe 4 and the lower pipe 5. The end of the lower pipe 5 away from the protective barrel 2 is connected to a heat exchange box 8 through a fan 15. The upper end of the heat exchange box 8 is connected to the upper pipe 4 through a four-way pipe 9. The remaining two ends of the four-way pipe 9 are respectively connected to a pressure control component and a dehumidification component. Several heat pipes 10 are provided on one side of the heat exchange box 8. The ends of the heat pipes 10 located outside the heat exchange box 8 are connected to a heat exchange plate 11. Several coolers 12 are installed on the heat exchange plate 11.

[0024] Example 2

[0025] Reference Figure 1-4 While all other parts are the same as in Example 1, the difference between this example and Example 1 is that:

[0026] The pressure control assembly includes a mounting cylinder 13, a linkage disc 14, and a top spring 16. The lower end of the mounting cylinder 13 is connected to one end of the four-way pipe 9. The linkage disc 14 is installed in the lower part inside the mounting cylinder 13. The top spring 16 is located on the upper surface of the linkage disc 14. A cover plate is installed on the upper end of the mounting cylinder 13. A limiting rod is slidably provided in the middle of the cover plate. The lower end of the limiting rod is fixed to the middle of the linkage disc 14. Slots are provided on the lower side of the cover plate and the upper side of the linkage disc 14. The upper and lower ends of the top spring 16 are respectively engaged in adjacent slots. The design allows the gas inside the heat exchanger 8 to rise, causing the gas to push the linkage plate 14 upward. This means the linkage plate 14 overcomes the spring force of the top spring 16 and moves towards the cover plate. At this time, excess gas enters the mounting cylinder 13, thereby reducing the internal pressure of the heat exchanger 8. Conversely, the linkage plate 14 moves downward. This design, through the pressure control component, balances the internal pressure of the heat exchanger 8, preventing excessive increases or decreases in internal pressure during the cooling process that could lead to damage. The slot design also facilitates the limiting of the top spring 16.

[0027] The dehumidification assembly includes a sealing cap 17 and a moisture-absorbing component 18. The moisture-absorbing component 18 is located in the remaining end of the four-way pipe 9, and the sealing cap 17 is installed at the end of the four-way pipe 9 where the moisture-absorbing component 18 is located. The dehumidification assembly facilitates the absorption of moisture from the gas inside the heat exchange box 8. Several guide plates 19 are provided inside the heat exchange box 8. The guide plates 19 are staggered and facilitate the flow of the gas inside the heat exchange box 8, so that the gas inside the heat exchange box 8 can fully contact each heat pipe 10 when flowing, thereby improving the heat exchange efficiency. A filling medium with thermal conductivity is provided between the protective barrel 2 and the smelting furnace body 1, and between the cooler 12 and the heat exchange box 8.

[0028] Operating principle and advantages: In the process of using this utility model, when the main body 1 of the smelting furnace needs to be cooled, valve 7 and fan 15 are opened first. At this time, under the action of fan 15, the gas inside the protective barrel 2, i.e. the air guide channel 3, forms a circulating flow route through the upper pipe 4, four-way pipe 9, heat exchange box 8 and lower pipe 5. During the gas circulation, the gas absorbs heat and rises in temperature inside the protective barrel 2 and the air guide channel 3. The high-temperature gas exchanges heat through heat pipe 10 in the heat exchange box 8. Then the low-temperature gas flows back to the air guide channel 3 to cool down the protective barrel 2. The protective barrel 2 exchanges heat with the main body 1 of the smelting furnace, thereby realizing the cooling treatment of the main body 1 of the smelting furnace.

[0029] Simultaneously, during the aforementioned process, the temperature of the circulating gas can be measured by the temperature sensors 6 installed on the upper pipe 4 and the lower pipe 5. Specifically, the temperature difference between the gas flowing out of the protective tank 2 and the gas entering the protective tank 2 is measured. Subsequently, the cooling capacity of several coolers 12 is controlled based on this temperature difference to avoid damage caused by sudden cooling of the furnace body 1 due to excessive temperature difference. In summary, when this solution is used, the circulating gas exchanges heat with the furnace body 1, and the coolers 12 cool the circulating gas in a timely and rapid manner. Compared with traditional water cooling methods, this solution not only allows for convenient and precise control of the cooling temperature but also provides stepless temperature control, thereby effectively cooling the furnace and avoiding the risk of coolant leakage. Therefore, this solution is more conducive to the cooling and use of the furnace.

[0030] It should be further explained that the pressure control component allows the gas inside the heat exchanger 8 to rise, causing the gas to push the linkage plate 14 upward. This means the linkage plate 14 overcomes the spring force of the top spring 16 and moves towards the cover plate. Excess gas then enters the mounting cylinder 13, thus reducing the internal pressure of the heat exchanger 8. Conversely, the linkage plate 14 moves downward. This pressure control component balances the internal pressure of the heat exchanger 8, preventing excessive pressure increases or decreases during cooling that could damage it. The slot also helps to limit the movement of the top spring 16. The dehumidification component facilitates moisture absorption from the gas inside the heat exchanger 8. The guide plate 19 guides the flow of gas inside the heat exchanger 8, ensuring sufficient contact between the gas and each heat pipe 10, thereby improving heat exchange efficiency.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fused magnesia smelting furnace with a cooling structure, comprising a furnace body (1) for magnesia processing, characterized in that, The main body (1) of the smelting furnace is fitted with a protective barrel (2). The protective barrel (2) has an air guide groove (3) inside its body wall. The upper and lower ends of the protective barrel (2) are respectively equipped with an upper pipe (4) and a lower pipe (5) corresponding to the air guide groove (3). The upper pipe (4) and the lower pipe (5) are respectively equipped with a thermometer (6) and a valve (7). The lower pipe (5) is connected to a heat exchange box (8) via a fan (15) at one end away from the protective barrel (2). The upper end of the heat exchange box (8) is connected to the upper pipe (4) via a four-way pipe (9). The remaining two ends of the four-way pipe (9) are respectively connected to a pressure control component and a dehumidification component. Several heat pipes (10) are provided on one side of the heat exchange box (8). The heat pipes (10) are connected to a heat exchange plate (11) at one end outside the heat exchange box (8). Several coolers (12) are installed on the heat exchange plate (11).

2. The fused magnesia smelting furnace with a cooling structure according to claim 1, characterized in that, The pressure control assembly includes a mounting cylinder (13), a linkage disc (14), and a top spring (16). The lower end of the mounting cylinder (13) is connected to one end of a four-way pipe (9). The linkage disc (14) is installed in the lower part inside the mounting cylinder (13), and the top spring (16) is located on the upper surface of the linkage disc (14).

3. The fused magnesia smelting furnace with a cooling structure according to claim 2, characterized in that, The upper end of the mounting cylinder (13) is equipped with a cover plate, and a limiting rod is slidably provided in the middle of the cover plate. The lower end of the limiting rod is fixed in the middle of the linkage plate (14).

4. The fused magnesia smelting furnace with a cooling structure according to claim 3, characterized in that, The cover plate has slots on its lower side and the linkage plate (14) on its upper side, and the top spring (16) is respectively locked in the adjacent slots at its upper and lower ends.

5. The fused magnesia smelting furnace with a cooling structure according to claim 1, characterized in that, The dehumidification assembly includes a sealing cap (17) and a moisture-absorbing element (18). The moisture-absorbing element (18) is disposed in the remaining end of the four-way pipe (9), and the sealing cap (17) is installed at the end of the four-way pipe (9) where the moisture-absorbing element (18) is located.

6. The fused magnesia smelting furnace with a cooling structure according to claim 1, characterized in that, The heat exchange box (8) is provided with several guide plates (19) inside, and the guide plates (19) are arranged alternately.

7. The fused magnesia smelting furnace with a cooling structure according to claim 1, characterized in that, The protective barrel (2) and the furnace body (1) are provided with a filling medium, and the filling medium has thermal conductivity.

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