Cooling and heat exchange device for electric arc smelting fused magnesia furnace

Abstract

The utility model discloses an arc smelting electric smelting magnesia furnace cooling and heat exchange device belongs to arc smelting technical field, including bottom plate, the top surface fixed connection of bottom plate has furnace bottom, the top of furnace bottom is installed with furnace body. In the utility model, through setting up water distribution groove, water collecting tank, inlet pipe and outlet pipe on the furnace bottom, setting up front heat exchange hole, annular groove and rear heat exchange groove in hollow pouring prefabricated cylinder, when cooling hollow pouring prefabricated cylinder, utilize first water pump to export the water in storage tank, make water flow in front heat exchange hole, annular groove and rear heat exchange groove, utilize the water flowing in front heat exchange hole, annular groove and rear heat exchange groove and hollow pouring prefabricated cylinder and carry out heat exchange, guarantee the efficiency of cooling hollow pouring prefabricated cylinder, and the warm water after heat exchange is introduced to the storage tank and is collected to supply use.

Description

Technical Field

[0001] This utility model relates to the field of electric arc melting technology, and more specifically, to a cooling and heat exchange device for an electric arc melting fused magnesia furnace. Background Technology

[0002] Arc melting is an electrothermal metallurgical method that uses electrical energy to generate an electric arc between electrodes or between an electrode and the material being melted to melt metals. The electric arc can be generated by direct current or alternating current. Fused magnesia is an alkaline refractory raw material made by melting natural magnesite, lightly calcined magnesia, or sintered magnesia in an electric arc furnace. After the fused magnesia is melted by arc melting in the furnace, cooling and heat exchange are required to lower the temperature.

[0003] A search revealed that CN209820119U discloses a cooling and heat exchange device for an electric arc melting magnesia furnace, comprising a hollow cast precast component and an induced draft fan. The hollow cast precast component is connected to the inside of the furnace body. A metal anchor is provided inside the hollow cast precast component, with one part located inside and the other part exposed outside. The metal anchor is connected to the furnace body by welding or bolts. The hollow cast precast component has one or more through holes running from top to bottom. The furnace body is connected to the furnace bottom, and the through holes are connected to the induced draft fan via pipelines. This patent has a simple structure, effectively reduces energy loss in the metal furnace body, is safe and energy-saving, improves energy utilization and the yield of high-grade magnesia, shortens the furnace body's cycle time, and improves the working efficiency of the electric arc melting magnesia furnace.

[0004] However, the aforementioned patents have the following shortcomings: the flow of gas through the through holes and channels can only cool the furnace body, resulting in slow and ineffective cooling. Therefore, we propose a cooling and heat exchange device for an electric arc melting fused magnesia furnace. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a cooling heat exchange device for an electric arc melting magnesia furnace.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] A cooling and heat exchange device for an electric arc melting magnesia furnace includes a base plate, a furnace bottom fixedly connected to the top surface of the base plate, a furnace body installed on the top of the furnace bottom, a hollow castable precast cylinder fixedly sleeved within the inner cavity of the furnace body, a furnace cover sleeved on the top of the furnace body, an annular groove inside the hollow castable precast cylinder, multiple front heat exchange holes on one side of the bottom surface of the hollow castable precast cylinder, and multiple rear heat exchange grooves on the other side of the bottom surface of the hollow castable precast cylinder. The top ends of the front heat exchange holes and the rear heat exchange grooves are connected to the inner cavity of the annular groove. A water distribution groove and a water collection groove are provided inside the furnace bottom. Multiple water inlet pipes are fixedly connected to the top of the furnace bottom, the bottom ends of the multiple water inlet pipes are connected to the inner cavity of the water distribution groove, and the top ends of the multiple water inlet pipes are connected to the inner cavity of the water distribution groove. All components are movably sleeved into the inner cavity of the front heat exchange hole. Multiple water outlet pipes are fixedly connected to the top surface of the furnace bottom. The bottom ends of the multiple water outlet pipes are connected to the inner cavity of the water collection tank. The top ends of the multiple water outlet pipes are movably sleeved into the inner cavity of the rear heat exchange tank. A water storage tank is fixedly connected to the top surface of the bottom plate. A refrigeration mechanism is provided on the side of the water storage tank. A first water pump is fixedly installed on the side of the water storage tank. The input end of the first water pump extends into the inner cavity of the water storage tank. The output end of the first water pump is fixedly connected to an inlet pipe. The end of the inlet pipe is fixedly sleeved into the inner cavity of the water distribution tank. A water storage tank is fixedly connected to the top surface of the bottom plate. A return water pipe is fixedly sleeved on the side of the water storage tank. A drain pipe is fixedly sleeved at the end of the return water pipe. The end of the drain pipe is fixedly sleeved into the inner cavity of the water collection tank.

[0008] As a preferred embodiment of the present invention, the refrigeration mechanism includes a temperature-conducting fin fixedly sleeved on the side of the water tank, one end of the temperature-conducting fin extending into the inner cavity of the water tank, a semiconductor refrigeration chip fixedly installed on the other side of the temperature-conducting fin, and a heat dissipation fin fixedly connected to the heating surface of the semiconductor refrigeration chip.

[0009] As a preferred embodiment of this utility model, a plurality of connecting blocks are fixedly connected to the side of the bottom of the furnace body, and each of the plurality of connecting blocks is provided with an installation hole. A plurality of connecting seats are fixedly connected to the side of the furnace bottom, and screws are fixedly connected to the top surface of each of the plurality of connecting seats. The top ends of the plurality of screws respectively penetrate the inner cavity of the plurality of installation holes and are threaded with nuts.

[0010] As a preferred embodiment of this utility model, a transparent plate is fixedly sleeved on the side of the water storage tank, a scale is provided on the transparent plate, and a drain valve is fixedly installed on the side of the water storage tank.

[0011] As a preferred embodiment of this utility model, a second water pump is fixedly installed on the side of the water tank, the output end of the second water pump extends into the inner cavity of the water tank, and the input end of the second water pump is fixedly connected to a water pumping pipe.

[0012] In a preferred embodiment of this utility model, the outer diameter of the water inlet pipe is equal to the inner diameter of the front heat exchange hole, and the outer diameter of the water outlet pipe is equal to the inner diameter of the rear heat exchange tank.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] (1) In this utility model, by setting a water distribution trough, a water collection trough, a water inlet pipe and a water outlet pipe on the bottom of the furnace, and setting a front heat exchange hole, an annular groove and a rear heat exchange groove in the hollow casting precast cylinder, when the hollow casting precast cylinder is cooled, the water in the storage tank is discharged by the first water pump, so that the water flows in the front heat exchange hole, annular groove and rear heat exchange groove, and heat exchange is carried out with the hollow casting precast cylinder by the water flowing in the front heat exchange hole, annular groove and rear heat exchange groove, so as to ensure the efficiency of cooling the hollow casting precast cylinder. The warm water after heat exchange is introduced into the storage tank for collection and use.

[0015] (2) In this utility model, by using the combination of heat-conducting fins, semiconductor cooling fins and heat dissipation fins, before using the water in the inner cavity of the water tank to cool the hollow casting preform, the semiconductor cooling fin is energized to make its cooling surface generate a low temperature. The heat-conducting fins are used to conduct the low temperature generated by the cooling surface of the semiconductor cooling fin to the water in the inner cavity of the water tank, thereby cooling the water and ensuring the effect of heat exchange and cooling of the hollow casting preform. It has good practicality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is an exploded view of the overall structure of this utility model;

[0018] Figure 3 This is a cross-sectional schematic diagram of the furnace bottom of this utility model;

[0019] Figure 4 This is a cross-sectional schematic diagram of the hollow casting precast cylinder of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the water storage tank of this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the water storage tank of this utility model;

[0022] Figure 7 This is a cross-sectional schematic diagram of the water storage tank of this utility model.

[0023] Explanation of the labels in the diagram:

[0024] 1. Base plate; 2. Furnace bottom; 3. Furnace body; 4. Hollow cast precast cylinder; 5. Front heat exchange hole; 6. Annular groove; 7. Water distribution groove; 8. Water collection groove; 9. Water inlet pipe; 10. Water outlet pipe; 11. Water inlet pipe; 12. Drain pipe; 13. Water storage tank; 14. First water pump; 15. Water storage tank; 16. Return water pipe; 17. Refrigeration mechanism; 18. Furnace cover; 19. Drain valve; 20. Temperature conductive fins; 21. Semiconductor refrigeration chip; 22. Heat dissipation fins; 23. Connecting seat; 24. Screw; 25. Nut; 26. Connecting block; 27. Mounting hole; 28. Second water pump; 29. ​​Water extraction pipe; 30. Transparent plate; 31. Scale; 32. Rear heat exchange groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Example:

[0029] Please see Figure 1-7A cooling and heat exchange device for an electric arc melting magnesia furnace includes a base plate 1, a furnace bottom 2 fixedly connected to the top surface of the base plate 1, a furnace body 3 installed on the top of the furnace bottom 2, a hollow casting precast cylinder 4 fixedly sleeved inside the inner cavity of the furnace body 3, a furnace cover 18 sleeved on the top of the furnace body 3, an annular groove 6 inside the hollow casting precast cylinder 4, multiple front heat exchange holes 5 on one side of the bottom surface of the hollow casting precast cylinder 4, and multiple rear heat exchange grooves 32 on the other side of the bottom surface of the hollow casting precast cylinder 4. The top ends of the front heat exchange holes 5 and the rear heat exchange grooves 32 are all connected to the inner cavity of the annular groove 6. A water distribution groove 7 and a water collection groove 8 are provided inside the furnace bottom 2. Multiple water inlet pipes 9 are fixedly connected to the top of the furnace bottom 2, the bottom ends of the multiple water inlet pipes 9 are all connected to the inner cavity of the water distribution groove 7, and the top ends of the multiple water inlet pipes 9 are movably sleeved to the front heat exchange holes 6. The inner cavity of the hot hole 5 and the top surface of the furnace bottom 2 are fixedly connected to multiple water outlet pipes 10. The bottom ends of the multiple water outlet pipes 10 are all connected to the inner cavity of the water collection tank 8. The top ends of the multiple water outlet pipes 10 are movably sleeved to the inner cavity of the rear heat exchange tank 32. The top surface of the bottom plate 1 is fixedly connected to a water storage tank 13. A cooling mechanism 17 is provided on the side of the water storage tank 13. A first water pump 14 is fixedly installed on the side of the water storage tank 13. The input end of the first water pump 14 extends into the inner cavity of the water storage tank 13. The output end of the first water pump 14 is fixedly connected to a water inlet pipe 11. The end of the water inlet pipe 11 is fixedly sleeved to the inner cavity of the water distribution tank 7. The top surface of the bottom plate 1 is fixedly connected to a water storage tank 15. A return water pipe 16 is fixedly sleeved on the side of the water storage tank 15. A drain pipe 12 is fixedly sleeved at the end of the return water pipe 16. The end of the drain pipe 12 is fixedly sleeved to the inner cavity of the water collection tank 8.

[0030] For details, please refer to Figure 1 and Figure 7 The refrigeration mechanism 17 includes a heat-conducting fin 20 fixedly sleeved on the side of the water tank 13. One end of the heat-conducting fin 20 extends into the inner cavity of the water tank 13. A semiconductor cooling chip 21 is fixedly installed on the other side of the heat-conducting fin 20. A heat dissipation fin 22 is fixedly connected to the heating surface of the semiconductor cooling chip 21.

[0031] In this embodiment, the cooling surface of the semiconductor cooling chip 21 is in contact with the heat-conducting fins 20, ensuring that the low temperature generated by the semiconductor cooling chip 21 can be conducted to the water in the inner cavity of the water tank 13 through the heat-conducting fins 20, so as to cool the water.

[0032] For details, please refer to Figure 1 , Figure 3 and Figure 4 Multiple connecting blocks 26 are fixedly connected to the side of the bottom end of the furnace body 3. Each of the multiple connecting blocks 26 has an installation hole 27. Multiple connecting seats 23 are fixedly connected to the side of the furnace bottom 2. Each of the multiple connecting seats 23 has a screw 24 fixedly connected to its top surface. The top of each screw 24 passes through the inner cavity of the multiple installation holes 27 and is threaded with a nut 25.

[0033] In this embodiment, the furnace body 3 is installed on the furnace bottom 2 by the cooperation of the connecting seat 23, screw 24, nut 25, connecting block 26 and mounting hole 27.

[0034] For details, please refer to Figure 2 and Figure 6 A viewing plate 30 is fixedly fitted to the side of the water storage tank 15, and a scale 31 is provided on the viewing plate 30. A drain valve 19 is fixedly installed on the side of the water storage tank 15.

[0035] In this embodiment, the water volume in the water storage tank 15 is controlled by the cooperation of the transparent plate 30 and the scale 31, and the warm water in the water storage tank 15 is released through the drain valve 19 for use.

[0036] For details, please refer to Figure 5 A second water pump 28 is fixedly installed on the side of the water tank 13. The output end of the second water pump 28 extends into the inner cavity of the water tank 13, and the input end of the second water pump 28 is fixedly connected to a water pumping pipe 29.

[0037] In this embodiment, the end of the water pump 29 is connected to an external water pipe so that water can be added to the inner cavity of the water tank 13 through the second water pump 28 and the water pump 29.

[0038] For details, please refer to Figure 3 and Figure 4 The outer diameter of the water inlet pipe 9 is equal to the inner diameter of the front heat exchange hole 5, and the outer diameter of the water outlet pipe 10 is equal to the inner diameter of the rear heat exchange tank 32.

[0039] In this embodiment, the sealing of the inner cavity of the heat exchange hole 5 before the water inlet pipe 9 is inserted is ensured, and the sealing of the heat exchange tank 32 after the water outlet pipe 10 is inserted is ensured.

[0040] Working principle: In use, the fused magnesia raw material to be fused is first placed into the inner cavity of the hollow casting precast cylinder 4. The furnace bottom 2 supports the fused magnesia raw material, and the electrodes on the furnace cover 18 are used to fused the fused magnesia raw material. Then, when it is necessary to cool down the hollow casting precast cylinder 4, the semiconductor cooling chip 21 is energized to generate a low temperature on its cooling surface. The heat-conducting fins 20 conduct the low temperature generated by the cooling surface of the semiconductor cooling chip 21 to the water in the inner cavity of the water tank 13, thereby cooling the water. Then, the first water pump 14 is started to pump out the water from the inner cavity of the water tank 13 and introduce the water into the distribution tank through the water inlet pipe 11. The inner cavity of the water tank 7 is further guided by the water inlet pipe 9 to multiple front heat exchange holes 5, so that the water flows in the front heat exchange holes 5, the annular groove 6 and the rear heat exchange groove 32. The water flowing in the front heat exchange holes 5, the annular groove 6 and the rear heat exchange groove 32 exchanges heat with the hollow cast precast cylinder 4, ensuring the efficiency of cooling the hollow cast precast cylinder 4. Finally, the warm water after heat exchange is guided from the water outlet pipe 10 to the inner cavity of the water collection tank 8 for collection. The collected water is guided from the drain pipe 12 and the return water pipe 16 to the inner cavity of the water storage tank 15 for storage, so that the warm water can be released for use after opening the drain valve 19.

[0041] 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 its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A cooling heat exchange device for an electric arc smelting fused magnesia furnace, comprising a bottom plate (1), characterized in that: The top surface of the base plate (1) is fixedly connected to the furnace bottom (2), and the top of the furnace bottom (2) is fitted with a furnace body (3). The inner cavity of the furnace body (3) is fixedly fitted with a hollow casting precast cylinder (4), and the top of the furnace body (3) is fitted with a furnace cover (18). The interior of the hollow casting precast cylinder (4) is provided with an annular groove (6). One side of the bottom surface of the hollow casting precast cylinder (4) is provided with multiple front heat exchange holes (5), and the other side of the bottom surface of the hollow casting precast cylinder (4) is provided with multiple rear heat exchange grooves. (32), the top ends of the front heat exchange hole (5) and the rear heat exchange groove (32) are connected to the inner cavity of the annular groove (6), the furnace bottom (2) is provided with a water distribution groove (7), the furnace bottom (2) is provided with a water collection groove (8), the top of the furnace bottom (2) is fixedly connected with multiple water inlet pipes (9), the bottom ends of the multiple water inlet pipes (9) are connected to the inner cavity of the water distribution groove (7), and the top ends of the multiple water inlet pipes (9) are movably sleeved to the inner cavity of the front heat exchange hole (5), the furnace bottom ( 2) The top surface of the base plate (1) is fixedly connected with multiple water outlet pipes (10), the bottom ends of the multiple water outlet pipes (10) are all connected to the inner cavity of the water collection tank (8), and the top ends of the multiple water outlet pipes (10) are movably sleeved into the inner cavity of the rear heat exchange tank (32). The top surface of the base plate (1) is fixedly connected with a water storage tank (13), the side of the water storage tank (13) is provided with a refrigeration mechanism (17), and the side of the water storage tank (13) is fixedly installed with a first water pump (14). The input end of the first water pump (14) is... Extending into the inner cavity of the water storage tank (13), the output end of the first water pump (14) is fixedly connected to the water inlet pipe (11), the end of the water inlet pipe (11) is fixedly sleeved into the inner cavity of the water distribution trough (7), the top surface of the bottom plate (1) is fixedly connected to the water storage tank (15), the side of the water storage tank (15) is fixedly sleeved with the return water pipe (16), the end of the return water pipe (16) is fixedly sleeved with the drain pipe (12), and the end of the drain pipe (12) is fixedly sleeved into the inner cavity of the water collection trough (8).

2. The cooling and heat exchange device for electric arc smelting electric smelting magnesia furnace according to claim 1, characterized in that: The refrigeration mechanism (17) includes a temperature-conducting fin (20) fixedly sleeved on the side of the water tank (13). One end of the temperature-conducting fin (20) extends into the inner cavity of the water tank (13). A semiconductor refrigeration chip (21) is fixedly installed on the other side of the temperature-conducting fin (20). A heat dissipation fin (22) is fixedly connected to the heating surface of the semiconductor refrigeration chip (21).

3. The cooling and heat exchanging device for electric arc smelting electrically fused magnesia furnace according to claim 1, characterized in that: Multiple connecting blocks (26) are fixedly connected to the side of the bottom end of the furnace body (3). Each of the multiple connecting blocks (26) has an installation hole (27). Multiple connecting seats (23) are fixedly connected to the side of the furnace bottom (2). Each of the multiple connecting seats (23) has a screw (24) fixedly connected to its top surface. The top of each of the multiple screws (24) passes through the inner cavity of the multiple installation holes (27) and is threaded with a nut (25).

4. The cooling and heat exchanging device of the electric arc smelting electrically fused magnesia furnace according to claim 1, characterized in that: A viewing plate (30) is fixedly fitted to the side of the water storage tank (15), and a scale (31) is provided on the viewing plate (30). A drain valve (19) is fixedly installed on the side of the water storage tank (15).

5. The cooling heat exchange device for an electric arc melting fused magnesia furnace according to claim 1, characterized in that: A second water pump (28) is fixedly installed on the side of the water tank (13). The output end of the second water pump (28) extends into the inner cavity of the water tank (13), and the input end of the second water pump (28) is fixedly connected to a water pumping pipe (29).

6. The cooling and heat exchanging device of the electric arc smelting electrically fused magnesia furnace according to claim 1, characterized in that: The outer diameter of the inlet pipe (9) is equal to the inner diameter of the front heat exchange hole (5), and the outer diameter of the outlet pipe (10) is equal to the inner diameter of the rear heat exchange tank (32).

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