Device for improving automatic switching of dust removal during feeding of electric arc furnace

Abstract

The utility model discloses a device for improving automatic dust removal switching in the feeding process of an electric arc furnace. The device comprises a plant, a top cover and a pipeline. An electric arc furnace body is arranged in the plant, and a movable noise reduction dust hood is arranged on the inner side of the plant; the top cover is arranged at the top of the movable noise reduction dust hood; a cylinder is arranged at the top of the plant; according to the dust removal device for the electric arc furnace, dust generated in the working process of the electric arc furnace can be effectively treated in a mode of combining the movable noise reduction dust suction cover, the box type centrifugal fan and a spraying and filtering system in the dust suction tank, so that the dust removal efficiency is improved, and the harm of the dust to the environment and operators is reduced; through the control of the controller on the whole system and the adjustability of the movable noise-reduction dust hood, the feeding process of the electric arc furnace can be well adapted, the position of the dust hood and system parameters can be adjusted in time during feeding, dust overflow in the feeding process is avoided, and it is guaranteed that the dust removal effect can be effectively maintained in the feeding process.

Description

Technical Field

[0001] This utility model relates to the field of dust removal technology, specifically a device for improving the automatic switching of dust removal during the feeding of an electric arc furnace. Background Technology

[0002] An electric arc furnace is an electric furnace that uses an electric arc generated by electrodes to melt ores and metals at high temperatures. When the electrodes discharge to form an electric arc, the energy is very concentrated, and the arc temperature is above 3000℃. For melting metals, electric arc furnaces are more flexible than other steelmaking furnaces and require less space, so they are widely used.

[0003] Currently, the dust removal system for electric arc furnaces in steel plants still relies on manual switching of dampers. Operators may forget to operate the system or make mistakes, leading to environmental pollution. Because the furnace cover needs to be opened when charging the electric arc furnace, the added material generates dense smoke. The roof damper in the dust removal system must be manually opened to increase suction. However, if the operator does not switch the damper in time during charging, the electric arc furnace emits thick smoke, significantly impacting the workshop environment.

[0004] In view of this, we have introduced a device to improve the automatic switching of dust removal during the charging of electric arc furnace. Utility Model Content

[0005] The purpose of this invention is to provide a device for automatically switching dust removal during the charging of an electric arc furnace, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for improving the automatic switching of dust removal during electric arc furnace charging, comprising: a plant, a top cover, and pipelines;

[0007] The interior of the factory building is equipped with an electric arc furnace, and the inner side of the factory building is equipped with a movable noise reduction and dust collection hood.

[0008] The top cover is installed on top of the movable noise-reducing dust collection hood, and the top cover is connected to the top of the movable noise-reducing dust collection hood by screws. A cylinder is installed on the top of the factory building, and the cylinder is connected to the top of the movable noise-reducing dust collection hood.

[0009] The pipe is installed on the top of the top cover. A box-type centrifugal fan is installed on one side of the pipe. The box-type centrifugal fan is connected to the top of the movable noise reduction dust collection hood by screws. A dust collection tank is installed on the other side of the box-type centrifugal fan through the pipe.

[0010] The top of the vacuum can is provided with an outlet, which is integrally formed with the vacuum can. The outlet is provided with a disassembly mechanism. The filter screen is disassembled into the outlet by the bolts of the disassembly mechanism, so as to release the filter screen and replace it.

[0011] Preferably, the disassembly mechanism includes a mounting block connected to the side of the filter screen frame. The mounting block and the filter screen frame are fixedly connected. The mounting block is slidably connected inside the outlet, and the filter screen frame is located inside the outlet. The bolt passes through the mounting block and is connected inside the outlet. A valve is connected inside the outlet to control the opening and closing of the outlet.

[0012] Preferably, a controller is connected to the surface of the electric arc furnace body, and a motor is connected to the top of the electric arc furnace body inside the feeding port. The output end of the motor is connected to the furnace cover, and the motor controls the rotation of the furnace cover to open and close the feeding port.

[0013] Preferably, the bottom of the pipe is connected to a flexible hose at the top of the top cover.

[0014] Preferably, a T-shaped limiting rod is connected to the top of the top cover, and the T-shaped limiting rod penetrates through the factory building. The T-shaped limiting rod is used to limit the movement of the top cover.

[0015] Preferably, the surface of the dust collection tank is connected to a support frame, and the bottom of the support frame is connected to the top of the factory building.

[0016] Preferably, the dust collection tank is internally connected to a spray pipe, and spray heads are connected at equal intervals to the bottom of the spray pipe.

[0017] Preferably, the bottom of the dust collection tank is connected to a discharge port for discharging the water source from the spray, and an electronic valve is connected to the surface of the discharge port for opening and closing the discharge port.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] (1) By combining the active noise reduction dust collection hood, the box-type centrifugal fan, and the spray and filtration system in the dust collection tank, the dust generated during the operation of the electric arc furnace can be effectively treated, improving the dust removal efficiency and reducing the harm of dust to the environment and operators.

[0020] (2) Through the controller to control the entire system and the adjustability of the active noise reduction dust collection hood, it can adapt well to the electric arc furnace feeding process. During feeding, the position of the dust collection hood and system parameters can be adjusted in time to avoid dust overflow during feeding and ensure that the dust removal effect can be effectively maintained during feeding.

[0021] (3) The disassembly mechanism at the outlet of the dust collection tank is reasonably designed. The filter screen frame can be replaced with simple bolt operation, which facilitates equipment maintenance, reduces maintenance costs, and ensures long-term stable operation of the equipment.

[0022] (4) It avoids operational errors and improves work efficiency. First of all, the operator will not forget to switch the air damper. It can also supervise the equipment to find and deal with problems in time, ensuring good dust removal effect. With the enhanced dust removal effect, the smoke and dust in the factory are reduced, and more fresh air is breathed. The thick smoke generated by feeding will not be discharged from the roof, but will be collected and treated by the system, which greatly reduces the pollution to the environment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a side sectional view of the dust collection can of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the filter frame of this utility model.

[0026] In the diagram: 1. Electric arc furnace body; 2. Furnace cover; 3. Motor; 4. Movable noise-reducing dust collection hood; 5. Cylinder; 6. Top cover; 7. Hose; 8. T-shaped limit rod; 9. Pipe; 10. Box-type centrifugal fan; 11. Dust collection tank; 12. Spray pipe; 13. Outlet; 14. Workshop; 15. Valve; 16. Spray head; 17. Discharge port; 18. Filter screen frame; 19. Mounting block; 20. Bolt; 21. Controller; 22. Support frame. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-3 This utility model provides a technical solution: a device for improving the automatic switching of dust removal during the feeding of an electric arc furnace, comprising: a workshop 14, wherein an electric arc furnace body 1 is provided inside the workshop 14, and a movable noise reduction dust collection hood 4 is provided on the inner side of the workshop 14;

[0029] Top cover 6, the top cover 6 is set on the top of the movable noise reduction dust collection hood 4, and the top of the factory building 14 is equipped with a cylinder 5, and the cylinder 5 is connected to the top of the movable noise reduction dust collection hood 4.

[0030] Pipe 9 is installed on the top of the top cover 6. A box-type centrifugal fan 10 is installed on one side of the pipe 9, and a dust collection tank 11 is installed on the other side of the box-type centrifugal fan 10 through the pipe 9.

[0031] The top of the vacuum tank 11 is provided with an outlet 13, and the interior of the outlet 13 is provided with a disassembly mechanism. The filter screen 18 is disassembled into the interior of the outlet 13 by the bolts 20 of the disassembly mechanism, so as to release the fixation and replace the filter screen 18.

[0032] The internal material of the filter frame 18 is: multi-layer filter structure, fiber filling structure and honeycomb structure.

[0033] The disassembly mechanism includes a mounting block 19 connected to the side of the filter frame 18. The mounting block 19 and the filter frame 18 are fixedly connected. The mounting block 19 is slidably connected inside the outlet 13, and the filter frame 18 is located inside the outlet 13. The bolt 20 passes through the mounting block 19 and is connected inside the outlet 13. A valve 15 is connected inside the outlet 13. The valve 15 is used to control the opening and closing of the outlet 13.

[0034] A controller 21 is connected to the surface of the electric arc furnace body 1. A motor 3 is connected to the top of the electric arc furnace body 1 inside the feeding port. The output end of the motor 3 is connected to the furnace cover 2. The motor 3 controls the furnace cover 2 to rotate, opening and closing the feeding port.

[0035] The bottom of the pipe 9 is connected to the top of the top cover 6 and is connected to a flexible hose 7.

[0036] The top of the top cover 6 is connected to a T-shaped limiting rod 8, which penetrates through the factory building 14. The T-shaped limiting rod 8 is used to limit the movement of the top cover 6.

[0037] The surface of the dust collection tank 11 is connected to a support frame 22, and the bottom of the support frame 22 is connected to the top of the factory building 14.

[0038] The dust collection tank 11 is internally connected to a spray pipe 12, and spray heads 16 are connected at equal intervals to the bottom of the spray pipe 12.

[0039] The bottom of the vacuum tank 11 is connected to a discharge port 17, which is used to discharge the water source of the spray. An electronic valve is connected to the surface of the discharge port 17 for opening and closing the discharge port 17.

[0040] Specifically, during use, a controller 21 is connected to the surface of the electric arc furnace body 1, and a motor 3 is connected inside the feeding port at the top of the electric arc furnace body 1. The output end of the motor 3 is connected to the furnace cover 2. When feeding is required, the motor 3 can control the opening and closing of the furnace cover 2. At the same time, the controller 21 can control the entire dust removal system according to various parameters and requirements during the feeding process, such as adjusting the position of the movable noise reduction dust suction hood 4 and the speed of the box-type centrifugal fan 10, to meet the dust removal requirements during feeding.

[0041] When the electric arc furnace is working, the box-type centrifugal fan 10 starts, and the gas is drawn in through the movable noise-reducing dust suction hood 4. The movable noise-reducing dust suction hood 4 can be adjusted in position as needed under the action of the cylinder 5. The gas is transported to the dust collection tank 11 through the pipe 9. A hose 7 is connected at the bottom of the pipe 9 and at the top of the top cover 6. This can adapt to the position change of the movable noise-reducing dust suction hood 4 to a certain extent and ensure smooth gas transmission.

[0042] The dust collection tank 11 is connected to a spray pipe 12, and spray nozzles 16 are connected to the bottom of the spray pipe 12 at equal intervals. When dust-laden gas enters the dust collection tank 11, the liquid sprayed from the spray nozzles 16 can adsorb and settle the dust, playing a preliminary dust removal role. The treated gas flows upward and is discharged through the outlet 13. The outlet 13 is equipped with a disassembly mechanism for replacing the filter screen frame 18. When the filter screen frame 18 needs to be replaced, the bolt 20 is turned, and the bolt 20 drives the mounting block 19 to move, thereby causing the filter screen frame 18 to detach from the outlet 13. At the same time, the valve 15 connected inside the outlet 13 can be closed when needed to facilitate the replacement operation.

[0043] While controlling the motor 3 to start, the controller 21 can also drive the box-type centrifugal fan 10 to start, and the cylinder 5 drives the movable noise-reducing dust collection hood 4 to move up and down, so that the movable noise-reducing dust collection hood 4 can be lowered to the top of the electric arc furnace body 1 to perform dust collection.

[0044] The circuit control of this utility model is existing technology, and will not be described in detail in this application.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for improving automatic switching of dust removal during charging of an electric arc furnace, characterized in that Include: Plant (14), the inside of the plant (14) is provided with an electric arc furnace body (1), the inner side of the plant (14) is provided with a movable noise reduction dust cover (4); Top cover (6), the top cover (6) is arranged on the top of the movable noise reduction dust cover (4), the top of the plant (14) is provided with a cylinder (5), and the cylinder (5) is connected to the top of the movable noise reduction dust cover (4); Pipeline (9), the pipeline (9) is arranged on the top of the top cover (6), one side of the pipeline (9) is provided with a box type centrifugal fan (10), the other side of the box type centrifugal fan (10) is provided with a dust tank (11) through the pipeline (9); The top of the dust tank (11) is provided with an outlet (13), the inside of the outlet (13) is provided with a dismounting mechanism, the filter screen frame (18) is driven by the bolt (20) of the dismounting mechanism to separate from the inside of the outlet (13), so as to release the fixed filter screen frame (18).

2. The device for improving automatic switching of dust removal during charging of an electric arc furnace according to claim 1, characterized in that, The dismounting mechanism includes the mounting block (19) connected to the side edge of the filter screen frame (18), the mounting block (19) is slidingly connected in the inside of the outlet (13), and the filter screen frame (18) is located in the inside of the outlet (13), the bolt (20) is connected in the inside of the outlet (13) after penetrating the mounting block (19), and the inside of the outlet (13) is connected with a valve (15).

3. The device for improving automatic switching of dust removal during charging of an electric arc furnace according to claim 1, characterized in that, The surface of the electric arc furnace body (1) is connected with a controller (21), the top of the electric arc furnace body (1) is connected with a motor (3) in the inside of the charging port, and the output end of the motor (3) is connected with a furnace cover (2).

4. The device for improving automatic switching of dust removal during charging of an electric arc furnace according to claim 1, characterized in that, The bottom of the pipeline (9) is connected with a hose (7) on the top of the top cover (6).

5. The device for improving automatic switching of dust removal during charging of an electric arc furnace according to claim 1, characterized in that, The top of the top cover (6) is connected with a T-shaped limiting rod (8), and the T-shaped limiting rod (8) penetrates the plant (14).

6. The device for improving automatic switching of dust removal during charging of an electric arc furnace according to claim 1, characterized in that, The surface of the dust tank (11) is connected with a support frame (22).

7. The device for improving automatic switching of dust removal during charging of an electric arc furnace according to claim 1, characterized in that, The inside of the dust tank (11) is connected with a spray pipe (12), and the bottom of the spray pipe (12) is connected with a spray head (16) at equal intervals.

8. The device for improving automatic switching of dust removal during charging of an electric arc furnace according to claim 1, characterized in that, The bottom of the dust tank (11) is connected with a discharge port (17).

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