Efficient water-cooled electric arc furnace cover

Abstract

The utility model relates to the field of electric arc furnace covers, and discloses an efficient water-cooled electric arc furnace cover which comprises a support, two hydraulic cylinders are fixedly connected to the bottom of the right side of the support, a top cover is fixedly connected between the output ends of the two hydraulic cylinders, a furnace body is arranged at the bottom of the top cover, and a water return pipe is fixedly connected to the right side of the top cover. The right side of the water return pipe is fixedly connected with a spiral pipe, the spiral pipe is sleeved with a sleeve, the sleeve is internally and fixedly connected with an inner cylinder, the bottom of the spiral pipe is fixedly connected with a water conveying pipe, the right side of the water conveying pipe is fixedly connected with a water tank, and the front side of the water tank is fixedly connected with a water inlet pipe. According to the utility model, water in the water tank is added into the top cover through the water inlet pipe by the water pump to dissipate heat of the top cover, and meanwhile, the water is heated and conveyed into the spiral pipe through the water return pipe, so that raw materials in the inner cylinder are preheated, heat energy is effectively utilized, and waste caused by discarding is avoided.

Description

Technical Field

[0001] The utility model relates to the field of electric arc furnace lids, in particular to a high-efficiency water-cooled electric arc furnace lid. Background Technique

[0002] The electric arc furnace lid is an important component of the electric arc furnace, mainly used to enclose the furnace body to prevent high-temperature molten metal and flue gas from leaking. It is usually made of high-temperature-resistant materials and is equipped with a ventilation system to exhaust the gases generated inside the furnace. The lid also supports the installation and adjustment of the electrodes to ensure a stable electric arc. Through the sealing and control of the lid, the thermal efficiency and safety inside the furnace can be improved, while protecting the operators and equipment. Maintaining a good lid helps to extend the service life of the electric arc furnace and improve the quality of steelmaking.

[0003] Among them, fused cast refractory bricks are refractory bricks produced by the electrofusion technology, mainly used for the lining of industrial furnaces in high-temperature environments. Its manufacturing process includes melting the raw materials in an electric arc furnace and then cooling and solidifying to form bricks. Fused cast refractory bricks have excellent high-temperature resistance, erosion resistance, and wear resistance, and are suitable for use in extreme working conditions. Compared with traditional refractory bricks, fused cast refractory bricks have higher density and strength, can better protect the furnace body, and improve the use efficiency and service life of the furnace.

[0004] When the electric arc furnace lid is opened, it needs to be cooled down. Traditionally, it is cooled by water cooling and air cooling. However, due to the high temperature of the electric arc furnace lid, the heat dissipated will be wasted and not utilized well, resulting in energy waste. Therefore, a high-efficiency water-cooled electric arc furnace lid is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a high-efficiency water-cooled electric arc furnace lid, aiming to improve the problem that the heat dissipated will be wasted and not utilized well, resulting in energy waste.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: A high-efficiency water-cooled electric arc furnace lid, including a bracket. At the bottom right of the bracket, two hydraulic cylinders are fixedly connected. Between the output ends of the two hydraulic cylinders, a top cover is fixedly connected. At the bottom of the top cover, there is a furnace body. On the right side of the top cover, a return water pipe is fixedly connected. On the right side of the return water pipe, a spiral pipe is fixedly connected. The spiral pipe is externally sleeved with a sleeve. Inside the sleeve, an inner cylinder is fixedly connected. At the bottom of the spiral pipe, a water delivery pipe is fixedly connected. On the right side of the water delivery pipe, a water tank is fixedly connected. In front of the water tank, a water inlet pipe is fixedly connected. Outside the water inlet pipe, a water pump is fixedly connected. The left end of the water inlet pipe is fixedly connected to the top of the top cover. A dust-proof component is installed on the right side of the bracket. The dust-proof component is used to prevent dust from falling into the furnace body and causing pollution when the top cover is opened.

[0007] As a further description of the above technical solution:

[0008] The dust-proof component includes a housing, the left side of the housing is fixedly connected to the right side of the bracket, a piston is slidably connected to the inner wall of the housing, a connecting rod is fixedly connected to the top of the piston, a suction pipe is fixedly connected to the bottom of the housing, and a dust-proof pipe is fixedly connected to the top of the suction pipe.

[0009] As a further description of the above technical solution:

[0010] The outer part of the inner cylinder is sleeved inside the spiral pipe, and the left side of the water delivery pipe is fixedly connected to the inside of the right side of the sleeve.

[0011] As a further description of the above technical solution:

[0012] The right side of the water return pipe is fixedly connected to the top of the sleeve.

[0013] As a further description of the above technical solution:

[0014] The water return pipe is a flexible pipe with a spring wire inside, and the water inlet pipe is a flexible pipe with a spring wire inside.

[0015] As a further description of the above technical solution:

[0016] The outer part of the top cover is sleeved inside the dust-proof pipe.

[0017] As a further description of the above technical solution:

[0018] The outer part of the connecting rod is slidably connected to the inside of the upper side of the housing, and the right side of the connecting rod is fixedly connected to the top edge of the top cover.

[0019] As a further description of the above technical solution:

[0020] The inner side of the dust-proof pipe is fixedly connected to the outside of the furnace body, and a plurality of air holes are opened at the top of the dust-proof pipe.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, water in the water tank is added into the top cover through the water inlet pipe by a water pump to dissipate heat from the top cover, and at the same time, the water is heated and transported to the spiral pipe through the water return pipe, realizing preheating of the raw materials in the inner cylinder, effectively utilizing heat energy and avoiding waste caused by waste.

[0023] 2. In the utility model, by opening the top cover, driving the connecting rod to pull the piston, a negative pressure is generated in the housing, so that the suction pipe and the dust-proof pipe suck air, realizing that when the top cover is opened, the dust near the furnace body is sucked away through the air holes on the dust-proof pipe, avoiding dust from falling into the furnace body. Description of the Drawings

[0024] Figure 1 Schematic three-dimensional view of the highly efficient water-cooled electric arc furnace cover proposed by the present utility model;

[0025] Figure 2 Schematic structural view of the spiral tube of the highly efficient water-cooled electric arc furnace cover proposed by the present utility model;

[0026] Figure 3 Schematic structural view of the outer shell of the highly efficient water-cooled electric arc furnace cover proposed by the present utility model.

[0027] Legend:

[0028] 1. Bracket; 2. Hydraulic cylinder; 3. Top cover; 4. Furnace body; 5. Return water pipe; 6. Spiral tube; 7. Sleeve; 8. Inner cylinder; 9. Water delivery pipe; 10. Water tank; 11. Water inlet pipe; 12. Water pump; 13. Outer shell; 14. Piston; 15. Connecting rod; 16. Suction pipe; 17. Dust-proof pipe. Specific implementation manners

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] Referring to Figure 1 - Figure 3 , an embodiment provided by the present utility model: a highly efficient water-cooled electric arc furnace cover includes a bracket 1. Two hydraulic cylinders 2 are fixedly connected to the bottom on the right side of the bracket 1. A top cover 3 is fixedly connected between the output ends of the two hydraulic cylinders 2. A furnace body 4 is arranged at the bottom of the top cover 3. A return water pipe 5 is fixedly connected to the right side of the top cover 3. A spiral tube 6 is fixedly connected to the right side of the return water pipe 5. A sleeve 7 is sleeved outside the spiral tube 6. An inner cylinder 8 is fixedly connected inside the sleeve 7. A water delivery pipe 9 is fixedly connected to the bottom of the spiral tube 6. A water tank 10 is fixedly connected to the right side of the water delivery pipe 9. A water inlet pipe 11 is fixedly connected to the front side of the water tank 10. A water pump 12 is fixedly connected to the outside of the water inlet pipe 11. The left end of the water inlet pipe 11 is fixedly connected to the top of the top cover 3. A dust-proof assembly is installed on the right side of the bracket 1. The dust-proof assembly is used to prevent dust from falling into the furnace body 4 when the top cover 3 is opened, causing pollution. The inner cylinder 8 is sleeved inside the spiral tube 6. The left side of the water delivery pipe 9 is fixedly connected to the inside of the right side of the sleeve 7. The right side of the return water pipe 5 is fixedly connected to the top of the sleeve 7. The return water pipe 5 is a flexible hose with a spring wire arranged inside. The water inlet pipe 11 is a flexible hose with a spring wire arranged inside.

[0031] Specifically, the bracket 1 is used to connect and support the hydraulic cylinder 2. The hydraulic cylinder 2 is used to drive the top cover 3 to move up and down to achieve the opening and closing of the furnace body 4. The furnace body 4 is a heating container for manufacturing the liquid material. The return water pipe 5 is used to drain the water for cooling the top cover 3. The spiral pipe 6 is a spiral pipe for heating the inner cylinder 8. The sleeve 7 is used to insulate the inner cylinder 8. The inner cylinder 8 is used to hold the raw materials to be melted. The water supply pipe 9 is used to re-enter the water into the water tank 10. The water tank 10 is used to store the water for cooling. The water inlet pipe 11 is used to convey the water in the water tank 10. The water pump 12 is used to add the water in the water tank 10 into the top cover 3 through the water inlet pipe 11.

[0032] Referring to Figure 1 - Figure 3 , the dust-proof component includes a housing 13. The left side of the housing 13 is fixedly connected to the right side of the bracket 1. A piston 14 is slidably connected to the inner wall of the housing 13. A connecting rod 15 is fixedly connected to the top of the piston 14. A suction pipe 16 is fixedly connected to the bottom of the housing 13. A dust-proof pipe 17 is fixedly connected to the top of the suction pipe 16. The outside of the top cover 3 is sleeved inside the dust-proof pipe 17. The outside of the connecting rod 15 is slidably connected to the upper inner side of the housing 13. The right side of the connecting rod 15 is fixedly connected to the top edge of the top cover 3. The inner side of the dust-proof pipe 17 is fixedly connected to the outside of the furnace body 4. A plurality of air holes are provided at the top of the dust-proof pipe 17.

[0033] Specifically, the housing 13 is used for inhaling and blowing air. The piston 14 slides inside the housing 13 to create negative pressure in the housing 13. The connecting rod 15 is used to drive the piston 14 to move up and down, and through the connection of the top cover 3, synchronous movement is achieved. The suction pipe 16 is used to convey gas. The dust-proof pipe 17 surrounds the outside of the furnace body 4 and is used to suck away or blow away dust to prevent it from falling into the furnace body 4.

[0034] Working principle: When using the electric arc furnace, when it is necessary to open the top cover 3, first control the hydraulic cylinder 2 to lift the top cover 3, and drive the connecting rod 15 to pull the piston 14, so that the housing 13 generates negative pressure, and the dust-proof pipe 17 inhales air through the suction pipe 16 to suck away the dust around the furnace body 4 to prevent it from falling into the furnace body 4. At the same time, the water pump 12 starts to work, and conveys the water in the water tank 10 along the water inlet pipe 11 to the top cover 3 to cool the top cover 3. At this time, the water passing through the top cover 3 will also be heated by the top cover 3 and conveyed along the return water pipe 5 to the spiral pipe 6, and through heat conduction, the inner cylinder 8 is heated to preheat the raw materials inside the inner cylinder 8. Then the water will be re-conveyed to the water tank 10 through the water supply pipe 9 for natural cooling. When the top cover 3 moves down, the connecting rod 15 pushes the piston 14, and the dust-proof pipe 17 will blow air to blow away the dust, also preventing the dust from falling into the furnace body 4.

[0035] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An efficient water-cooled electric arc furnace roof, comprising a bracket (1), characterized in that: On the right bottom of the bracket (1), two hydraulic cylinders (2) are fixedly connected. Between the output ends of the two hydraulic cylinders (2), a top cover (3) is fixedly connected. Below the top cover (3), a furnace body (4) is arranged. On the right side of the top cover (3), a return water pipe (5) is fixedly connected. On the right side of the return water pipe (5), a spiral pipe (6) is fixedly connected. An outer sleeve (7) is sleeved outside the spiral pipe (6). An inner cylinder (8) is fixedly connected inside the outer sleeve (7). At the bottom of the spiral pipe (6), a water delivery pipe (9) is fixedly connected. On the right side of the water delivery pipe (9), a water tank (10) is fixedly connected. On the front side of the water tank (10), a water inlet pipe (11) is fixedly connected. A water pump (12) is fixedly connected outside the water inlet pipe (11). The left end of the water inlet pipe (11) is fixedly connected to the top of the top cover (3). A dust-proof component is installed on the right side of the bracket (1). The dust-proof component is used to prevent dust from falling into the furnace body (4) and causing pollution when the top cover (3) is opened.

2. The high-efficiency water-cooled arc furnace roof according to claim 1, characterized in that: The dust-proof component includes a housing (13). The left side of the housing (13) is fixedly connected to the right side of the bracket (1). A piston (14) is slidably connected to the inner wall of the housing (13). At the top of the piston (14), a connecting rod (15) is fixedly connected. At the bottom of the housing (13), a suction pipe (16) is fixedly connected. At the top of the suction pipe (16), a dust-proof pipe (17) is fixedly connected.

3. The high-efficiency water-cooled electric arc furnace roof according to claim 1, characterized in that: The outer side of the inner cylinder (8) is sleeved inside the spiral pipe (6). The left side of the water delivery pipe (9) is fixedly connected to the inside of the right side of the outer sleeve (7).

4. The high-efficiency water-cooled electric arc furnace roof according to claim 1, characterized in that: The right side of the return water pipe (5) is fixedly connected to the top of the outer sleeve (7).

5. The high-efficiency water-cooled electric arc furnace roof according to claim 1, characterized in that: The return water pipe (5) is a flexible pipe with a spring wire arranged inside, and the water inlet pipe (11) is a flexible pipe with a spring wire arranged inside.

6. The high-efficiency water-cooled electric arc furnace roof according to claim 2, characterized in that: The outer side of the top cover (3) is sleeved inside the dust-proof pipe (17).

7. The high-efficiency water-cooled electric arc furnace roof according to claim 2, characterized in that: The outer side of the connecting rod (15) is slidably connected to the inside of the upper side of the housing (13). The right side of the connecting rod (15) is fixedly connected to the top edge of the top cover (3).

8. The high-efficiency water-cooled electric arc furnace roof according to claim 2, characterized in that: The inner side of the dust-proof pipe (17) is fixedly connected to the outer side of the furnace body (4). A plurality of air holes are formed at the top of the dust-proof pipe (17).

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