Submerged arc furnace cover capable of reducing magnetic field interference

Abstract

The utility model discloses a submerged arc furnace cover capable of reducing magnetic field interference, which comprises a cover body, a plurality of groups of annularly distributed grounding plates are arranged on the cover body, a mounting frame is arranged on the cover body, a mounting rod is arranged in the mounting frame, a valve plate is sleeved on the mounting rod, the valve plate is movably clamped with the cover body, and the valve plate is connected with the cover body. The mounting rod is sleeved with a compression spring, an adjusting plate is sleeved with the mounting rod, a threaded rod is arranged in the mounting rod, the mounting frame is sleeved with a splash guard, the cover body is sleeved with a cooling water pipe, and the arranged valve plate is matched with the compression spring, the threaded rod and the adjusting rod to achieve overpressure protection of the furnace cover. Safety accidents such as damage to the furnace cover or the furnace body caused by too high pressure in the furnace body are avoided, protection of splashing of furnace charge in the furnace cover is achieved through the arranged splash-proof cover, and the furnace charge is prevented from splashing out to damage equipment or injure workers in the opening process of the valve clack.

Description

Technical Field

[0001] The utility model relates to the technical field of submerged arc furnaces, in particular to a submerged arc furnace cover capable of reducing magnetic field interference. Background Art

[0002] The submerged arc furnace is also called an electric arc furnace or a resistance furnace. It is mainly used for reducing and smelting raw materials such as ores, carbonaceous reducing agents and solvents. It mainly produces ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, silicon-manganese alloys and other ferroalloys. It is an important industrial raw material in the metallurgical industry and a chemical raw material such as calcium carbide. The furnace cover is used to seal the furnace, collect and export coal gas, reduce heat loss and improve the working conditions in the smelting area. In order to protect the furnace body and prevent the pressure in the furnace body from rising sharply when the submerged arc furnace is in use, multiple groups of pressure relief valves are usually set on the furnace cover to complete the pressure relief protection of the furnace body.

[0003] In the prior art, the pressure in the furnace body is too high, which causes a sharp impact on the valve flap of the pressure relief valve, causing the valve flap to open and the charge in the furnace body to splash. Without corresponding protective measures, the splashing charge can easily cause damage to personnel or equipment, and the existing pressure relief valve cannot adjust the pressure value of the pressure relief, so it is not practical. The cooling pipeline on the existing furnace cover is long, and the temperature rise during the cooling water circulation process is too high, which causes some impurities in the water to precipitate and easily block the pipeline. Utility Model Content

[0004] The utility model aims to provide a furnace cover of an ore-fired furnace with the function of reducing magnetic field interference, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a furnace cover of an electric arc furnace with the function of reducing magnetic field interference, comprising a cover body, the cover body is provided with a plurality of groups of annularly distributed grounding plates, the cover body is provided with a mounting frame, the mounting frame is provided with a mounting rod, the mounting rod is provided with a valve plate sleeved thereon, the valve plate is movably connected to the cover body, the mounting rod is sleeved with a compression spring, the mounting rod is sleeved with an adjusting plate, the mounting rod is provided with a threaded rod, two groups of symmetrically distributed first connecting rods are provided on both sides of the valve plate, the mounting frame is provided with two groups of symmetrically distributed gears, the mounting frame is sleeved with a splash guard, the splash guard is provided with two groups of symmetrically distributed second connecting rods, the cover body is sleeved with a cooling water pipe, the cooling water pipe is provided with a mounting box, and the mounting box is provided with two groups of adjacent filter frames.

[0006] As a further preferred embodiment of the present technical solution, the two ends of the compression spring are respectively fixedly connected to the adjusting plate and the valve plate, the two ends of the threaded rod respectively pass through the mounting rod and are rotatably connected to the mounting rod, and the threaded rod passes through the adjusting plate and is threadedly connected to the adjusting plate.

[0007] As a further preferred embodiment of the present technical solution, the gear is rotatably connected to the mounting frame via a rotating rod, two groups of symmetrically distributed torsion springs are sleeved on the rotating rod, and two ends of the torsion spring are respectively fixedly connected to the mounting frame and the gear.

[0008] As a further preferred embodiment of the present technical solution, the two groups of the first connecting rods are respectively slidably connected to the two sides of the mounting frame, the two groups of the first connecting rods are both equipped with a first rack, the two groups of the second connecting rods are both provided with a second rack, the two groups of the second connecting rods are both slidably connected to the mounting frame, the gear is located between the corresponding first rack and the second rack, and the gear is respectively meshed and connected with the first rack and the second rack.

[0009] As a further preferred embodiment of the present technical solution, a connecting pipe is provided on the installation box, and the cooling water pipe is connected to the connecting pipe through the installation box, and two groups of symmetrically distributed cleaning grooves are provided in the installation box, and the two groups of filter frames are slidably connected to the installation box, and two groups of symmetrically distributed screw rods are provided in the installation box, and a synchronous belt is provided in the installation box, and two groups of symmetrically distributed cleaning brushes are provided in the installation box, and two groups of symmetrically distributed second screw rods are provided in the installation box, and a sealing frame is provided in the installation box, and the sealing frame is slidably connected to the installation box, and a sealing rubber ring is provided between the sealing frame and the installation box, and the two sides of the sealing rubber ring are respectively fixedly connected to the installation box and the sealing frame, and the sealing frame is movably engaged with the filter frame, and a first screw is provided in the installation box, and the first screw passes through the sealing frame and is threadedly connected to the sealing frame.

[0010] As a further preferred embodiment of the present technical solution, both ends of the two groups of screw rods respectively penetrate the installation box and are rotatably connected to the installation box, the two groups of screw rods respectively penetrate the two groups of filter frames and are threadedly connected to the two groups of filter frames, the two groups of screw rods are sleeved with synchronous wheels, and the synchronous belts are respectively transmission-connected to the two groups of synchronous wheels.

[0011] As a further preferred embodiment of the present technical solution, the two groups of cleaning brushes are respectively slidably connected to the installation box, the two groups of cleaning brushes are arranged corresponding to the cleaning grooves, both ends of the two groups of second screws pass through the installation box and are rotatably connected to the installation box, and the two groups of second screws pass through the corresponding cleaning brushes and are threadedly connected to the cleaning brushes.

[0012] The utility model provides a furnace cover for a submerged arc furnace with the function of reducing magnetic field interference, which has the following beneficial effects:

[0013] (1) The utility model realizes overpressure protection for the furnace cover by means of the valve plate, the compression spring, the threaded rod and the adjusting rod, so as to avoid safety accidents such as damage to the furnace cover or the furnace body caused by excessive pressure in the furnace body, and realizes protection against splashing of furnace charge in the furnace cover by means of the splash shield, so as to avoid splashing of furnace charge during the valve flap opening process to damage the equipment or cause injury to the staff. At the same time, the pressure relief pressure value of the valve plate is adjusted by adjusting the compression amount of the compression spring, so that the pressure relief protection of the furnace cover for the furnace body is suitable for different production requirements. At the same time, the grounding plate on the furnace cover is provided to reduce the magnetic field interference protection of the furnace cover of the electric arc furnace.

[0014] (2) The utility model filters the cooling circulating water through the installation box and the two groups of movable and adjustable filter frames in the installation box, thereby reducing impurities in the cooling water and preventing impurities from being precipitated and attached to the inner wall of the cooling water pipe due to excessive temperature rise during the cooling water circulation process, thereby affecting the cooling effect of the cooling water pipe on the furnace cover. During the cooling water circulation process, the water is filtered by the filter frame before entering the cooling water pipe. After being filtered by the filter frame, impurities in the cooling water are reduced, thereby reducing the possibility of impurities precipitating and clogging the water pipe due to overheating of the cooling water. At the same time, after a group of filter frames has been used for a long time, the position of the two groups of filter frames is switched by a screw rod to maintain the flow of cooling water. At the same time, the cleaning brush installed in the cleaning tank is used to clean the impurities on the filter screen of the used filter frame for the next use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the valve plate of the utility model;

[0017] Figure 3 For the utility model Figure 2 -A magnified view of the structure;

[0018] Figure 4 This is a schematic diagram of the structure of the cooling water pipe of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the installation box of the utility model;

[0020] In the figure: 1, cover body; 2, grounding plate; 3, mounting frame; 4, mounting rod; 5, compression spring; 6, valve plate; 7, adjusting plate; 8, threaded rod; 9, first connecting rod; 10, first rack; 11, gear; 12, rotating rod; 13, torsion spring; 14, second connecting rod; 15, second rack; 16, splash cover; 17, cooling water pipe; 18, mounting box; 19, connecting pipe; 20, cleaning tank; 21, filter frame; 22, second screw; 23, screw rod; 24, synchronous wheel; 25, synchronous belt; 26, sealing frame; 27, sealing rubber ring; 28, first screw; 29, cleaning brush. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] The utility model provides a technical solution: Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, a furnace cover of a mineral arc furnace with reduced magnetic field interference includes a cover body 1, a plurality of groups of annularly distributed grounding plates 2 are provided on the cover body 1, a mounting frame 3 is provided on the cover body 1, a mounting rod 4 is provided in the mounting frame 3, a valve plate 6 is sleeved on the mounting rod 4, the valve plate 6 is movably connected to the cover body 1, a compression spring 5 is sleeved on the mounting rod 4, an adjusting plate 7 is sleeved on the mounting rod 4, a threaded rod 8 is provided in the mounting rod 4, two groups of symmetrically distributed first connecting rods 9 are provided on both sides of the valve plate 6, two groups of symmetrically distributed gears 11 are provided in the mounting frame 3, a splash shield 16 is sleeved on the mounting frame 3, two groups of symmetrically distributed second connecting rods 14 are provided in the splash shield 16, a cooling water pipe 17 is sleeved on the cover body 1, a mounting box 18 is provided on the cooling water pipe 17, two groups of adjacently arranged filter frames 21 are provided in the mounting box 18 ... and a compression spring 5 are fixedly connected to the adjusting plate 7 and the valve plate 6 respectively, the two ends of the threaded rod 8 respectively penetrate the mounting rod 4 and are rotatably connected to the mounting rod 4, the threaded rod 8 penetrates the adjusting plate 7 and is threadedly connected to the adjusting plate 7, the gear 11 is rotatably connected to the mounting frame 3 through the rotating rod 12, two groups of symmetrically distributed torsion springs 13 are sleeved on the rotating rod 12, the two ends of the torsion spring 13 are fixedly connected to the mounting frame 3 and the gear 11 respectively, the two groups of first connecting rods 9 are slidably connected to the two sides of the mounting frame 3, the two groups of first connecting rods 9 are both installed with a first rack 10, the two groups of second connecting rods 14 are both provided with a second rack 15, the two groups of second connecting rods 14 are both slidably connected to the mounting frame 3, the gear 11 is located between the corresponding first rack 10 and the second rack 15, and the gear 11 is meshed with the first rack 10 and the second rack 15 respectively.

[0023] The overpressure protection of the furnace cover is achieved by the valve plate 6, the compression spring 5, the threaded rod 8 and the adjusting rod, so as to avoid safety accidents such as damage to the furnace cover or the furnace body due to excessive pressure in the furnace body. The splash protection cover 16 is provided to protect the furnace cover from splashing of furnace charge, so as to avoid splashing of furnace charge during the opening of the valve flap to damage the equipment or cause injury to the staff. At the same time, by adjusting the compression amount of the compression spring 5, the pressure relief pressure value of the valve plate 6 is adjusted, so that the pressure relief protection of the furnace cover for the furnace body is suitable for different production needs. At the same time, the grounding plate 2 on the furnace cover is provided to reduce the magnetic field interference protection of the furnace cover of the electric arc furnace.

[0024] like Figure 4 and Figure 5 As shown, a connecting pipe 19 is provided on the installation box 18, and the cooling water pipe 17 is connected to the connecting pipe 19 through the installation box 18. Two groups of symmetrically distributed cleaning grooves 20 are opened in the installation box 18, and two groups of filter frames 21 are slidably connected to the installation box 18. Two groups of symmetrically distributed screw rods 23 are provided in the installation box 18, a synchronous belt 25 is provided in the installation box 18, two groups of symmetrically distributed cleaning brushes 29 are provided in the installation box 18, and two groups of symmetrically distributed second screw rods 22 are provided in the installation box 18. A sealing frame 26 is provided in the installation box 18, and the sealing frame 26 is slidably connected to the installation box 18. A sealing rubber ring 27 is provided between the sealing frame 26 and the installation box 18, and the two sides of the sealing rubber ring 27 are respectively fixedly connected to the installation box 18 and the sealing frame 26. The filter frame 21 is movably connected, and a first screw 28 is provided in the installation box 18. The first screw 28 penetrates the sealing frame 26 and is threadedly connected to the sealing frame 26. The two ends of the two groups of screw rods 23 respectively penetrate the installation box 18 and are rotatably connected to the installation box 18. The two groups of screw rods 23 respectively penetrate the two groups of filter frames 21 and are threadedly connected to the two groups of filter frames 21. Synchronous wheels 24 are sleeved on the two groups of screw rods 23. The synchronous belts 25 are respectively transmission-connected to the two groups of synchronous wheels 24. The two groups of cleaning brushes 29 are respectively slidably connected to the installation box 18. The two groups of cleaning brushes 29 are correspondingly arranged to the cleaning groove 20. The two ends of the two groups of second screw rods 22 penetrate the installation box 18 and are rotatably connected to the installation box 18. The two groups of second screw rods 22 respectively penetrate the corresponding cleaning brushes 29 and are threadedly connected to the cleaning brushes 29.

[0025] The cooling circulating water is filtered by the installed installation box 18 and the two movable and adjustable filter frames 21 in the installation box 18 to reduce impurities in the cooling water and avoid the precipitation of impurities due to excessive temperature rise during the cooling water circulation process and adhesion to the inner wall of the cooling water pipe 17, thereby affecting the cooling effect of the cooling water pipe 17 on the furnace cover.

[0026] The utility model provides a furnace cover of an ore-heating furnace with the function of reducing magnetic field interference. The specific working principle is as follows: the overpressure protection of the furnace cover is realized by the arranged valve plate 6, the compression spring 5, the threaded rod 8 and the adjusting rod, so as to avoid safety accidents such as damage to the furnace cover or the furnace body caused by excessive pressure in the furnace body, and at the same time, the pressure relief pressure value of the valve plate 6 is adjusted by adjusting the compression amount of the compression spring 5, so that the pressure relief protection of the furnace cover for the furnace body is suitable for different production needs. At the same time, the magnetic field interference reduction protection of the furnace cover of the ore-heating furnace is realized by the arranged grounding plate 2 on the furnace cover, and the splash shield 16 is arranged to drive the first rack 10 to slide upward in the process of the valve plate 6 being pushed open when the pressure in the furnace body increases, thereby causing the gear 11 to slide, and the gear During the sliding process of the wheel 11, the second gear 11 and the second connecting rod 14 drive the splash shield 16 to move downward, thereby protecting the furnace cover from splashing, and preventing the furnace charge from splashing out and damaging the equipment or causing injuries to the staff during the opening of the valve disc. During the cooling water circulation process, it is filtered by the filter frame 21 and then enters the cooling water pipe 17. After being filtered by the filter frame 21, the impurities in the cooling water are reduced, and the possibility of impurities precipitating and clogging the water pipe due to overheating of the cooling water is reduced. At the same time, after a group of filter frames 21 are used for a long time, the position of the two groups of filter frames 21 is switched through the screw rod 23 to maintain the flow of cooling water. At the same time, the cleaning brush 29 installed in the cleaning tank 20 is used to clean the impurities on the filter screen of the used filter frame 21 for the next use.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A furnace cover for a submerged arc furnace having the function of reducing magnetic field interference, comprising a cover body (1), characterized in that: The cover body (1) is provided with a plurality of groups of annularly distributed grounding plates (2), the cover body (1) is provided with a mounting frame (3), a mounting rod (4) is provided inside the mounting frame (3), a valve plate (6) is sleeved on the mounting rod (4), the valve plate (6) is movably engaged with the cover body (1), a compression spring (5) is sleeved on the mounting rod (4), an adjusting plate (7) is sleeved inside the mounting rod (4), a threaded rod (8) is provided inside the mounting rod (4), and the valve plate (6) is sleeved on the mounting rod (4). Two groups of symmetrically distributed first connecting rods (9) are provided on both sides of the cover (1), two groups of symmetrically distributed gears (11) are provided in the mounting frame (3), a splash shield (16) is sleeved on the mounting frame (3), two groups of symmetrically distributed second connecting rods (14) are provided in the splash shield (16), a cooling water pipe (17) is sleeved on the cover (1), a mounting box (18) is provided on the cooling water pipe (17), and two groups of adjacently arranged filter frames (21) are provided in the mounting box (18).

2. The ore-fired furnace cover with reduced magnetic field interference according to claim 1, characterized in that: The two ends of the compression spring (5) are respectively fixedly connected to the adjustment plate (7) and the valve plate (6); the two ends of the threaded rod (8) respectively penetrate the mounting rod (4) and are rotatably connected to the mounting rod (4); and the threaded rod (8) penetrates the adjustment plate (7) and is threadedly connected to the adjustment plate (7).

3. The ore cover of a submerged arc furnace with reduced magnetic field interference according to claim 1, characterized in that: The gear (11) is rotatably connected to the mounting frame (3) via a rotating rod (12); two groups of symmetrically distributed torsion springs (13) are sleeved on the rotating rod (12); and the two ends of the torsion spring (13) are respectively fixedly connected to the mounting frame (3) and the gear (11).

4. The ore-fired furnace cover with reduced magnetic field interference according to claim 1, characterized in that: The two groups of the first connecting rods (9) are respectively slidably connected to the two sides of the mounting frame (3); the two groups of the first connecting rods (9) are both equipped with a first rack (10); the two groups of the second connecting rods (14) are both equipped with a second rack (15); the two groups of the second connecting rods (14) are both slidably connected to the mounting frame (3); the gear (11) is located between the corresponding first rack (10) and the second rack (15); the gear (11) is respectively meshed and connected with the first rack (10) and the second rack (15).

5. The ore-fired furnace cover with reduced magnetic field interference according to claim 1, characterized in that: The installation box (18) is provided with a connecting pipe (19), the cooling water pipe (17) is connected to the connecting pipe (19) through the installation box (18), two groups of symmetrically distributed cleaning grooves (20) are opened in the installation box (18), the two groups of filter frames (21) are slidably connected to the installation box (18), two groups of symmetrically distributed screw rods (23) are provided in the installation box (18), a synchronous belt (25) is provided in the installation box (18), two groups of symmetrically distributed cleaning brushes (29) are provided in the installation box (18), and two groups of symmetrically distributed A second screw rod (22); a sealing frame (26) is provided in the installation box (18); the sealing frame (26) is slidably connected to the installation box (18); a sealing rubber ring (27) is provided between the sealing frame (26) and the installation box (18); two sides of the sealing rubber ring (27) are respectively fixedly connected to the installation box (18) and the sealing frame (26); the sealing frame (26) is movably connected to the filter frame (21); a first screw rod (28) is provided in the installation box (18); the first screw rod (28) passes through the sealing frame (26) and is threadedly connected to the sealing frame (26).

6. The ore-fired furnace cover with reduced magnetic field interference according to claim 5, characterized in that: Both ends of the two groups of screw rods (23) respectively penetrate the installation box (18) and are rotatably connected to the installation box (18); the two groups of screw rods (23) respectively penetrate the two groups of filter frames (21) and are threadedly connected to the two groups of filter frames (21); the two groups of screw rods (23) are sleeved with synchronous wheels (24); and the synchronous belts (25) are respectively drivingly connected to the two groups of synchronous wheels (24).

7. The ore cover of a submerged arc furnace with reduced magnetic field interference according to claim 5, characterized in that: The two groups of cleaning brushes (29) are respectively slidably connected to the installation box (18), the two groups of cleaning brushes (29) are arranged corresponding to the cleaning slots (20), both ends of the two groups of the second screw rods (22) penetrate the installation box (18) and are rotatably connected to the installation box (18), and the two groups of the second screw rods (22) respectively penetrate the corresponding cleaning brushes (29) and are threadedly connected to the cleaning brushes (29).

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