Smoke guiding device for electric arc furnace

Abstract

The utility model discloses a flue gas guiding device for an electric arc furnace, which comprises a positioning frame, the positioning frame is arranged on the periphery of a ceiling cover and is used for positioning rolling assemblies, the edge of the bottom of the ceiling cover is connected with roller shutters, the roller shutters are rolled and unrolled through the rolling assemblies, the rolling assemblies and the roller shutters are synchronously arranged, and the rolling assemblies and the roller shutters are connected with the positioning frame. And after the multiple groups of roller shutters are fully unfolded, an air collecting opening is formed in the tail end, and smoke exhausted from the electric arc furnace is gathered and guided to the ceiling cover through the air collecting opening. The guide device can greatly improve the suction efficiency of the smoke generated by the electric arc furnace, reduces the energy consumption of the link, can prevent the smoke from being exhausted, and plays a role in protecting the environment.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgy, in particular to a fume guiding device for an electric arc furnace. Background Art

[0002] The metallurgical industry is a traditional industry with high energy consumption and high pollution. Energy costs account for a large proportion of the cost expenditure of metallurgical enterprises. How to effectively reduce energy consumption has always been the goal pursued by the metallurgical industry. The electric arc furnace used in the metallurgical industry will have a large amount of smoke discharged from the furnace mouth during the steelmaking process. In order to discharge the smoke as soon as possible to prevent the temperature of the electric arc furnace working area from rising rapidly and reduce the environmental pollution caused by the exhaust of smoke, a canopy is usually set at a certain height directly above the electric arc furnace. A high-power fan is set in the pipeline connected to the canopy. The suction force generated by the fan sucks away the smoke. Since the operating space needs to be reserved between the canopy and the electric arc furnace, the required fan power is very large, the energy consumption is high, and the suction effect is not very ideal. Since there is a lot of dust mixed in the smoke, it pollutes the environment and causes the working environment of the factory to be very bad, which will affect the personal safety of workers and the service life of equipment to a certain extent. Utility Model Content

[0003] In response to the above technical problems, the utility model proposes a flue gas guiding device for an electric arc furnace, which can greatly improve the suction efficiency of the flue gas generated by the electric arc furnace, reduce the energy consumption of this link, and at the same time avoid the exhaust of flue gas, thereby protecting the environment.

[0004] A smoke guiding device for an electric arc furnace comprises a positioning frame, which is installed on the periphery of a sky cover and is used to position a retracting assembly. A roller blind is connected to the bottom edge of the sky cover, and the roller blind is retracted and released by the retracting assembly. A plurality of groups of the retracting assemblies and the roller blinds are synchronously provided. When the plurality of groups of roller blinds are fully unfolded, an air collecting port is formed at the end thereof. The air collecting port gathers the smoke discharged from the electric arc furnace and guides it to the sky cover.

[0005] As a preferred embodiment of the above technical solution, the winding assembly includes a motor, the output shaft of the motor is connected to a rotating shaft, and a plurality of winding rollers are coaxially and evenly fixed on the rotating shaft, the winding rollers are used for winding ropes, and the ropes are used for pulling the roller blinds.

[0006] As a preferred embodiment of the above technical solution, the rotating shaft is supported by multiple groups of bearing supports.

[0007] As a preferred embodiment of the above technical solution, the positioning frame is a rectangular frame formed by welding square tubes, and a group of winding components are respectively installed on the four square tubes of the rectangular frame.

[0008] As a preferred embodiment of the above technical solution, a plurality of groups of rolling blinds are synchronously driven to rise and fall through the rolling assembly.

[0009] The beneficial effects of the utility model are:

[0010] 1. It can greatly improve the extraction efficiency of the flue gas generated by the electric arc furnace, reduce the energy consumption in this link, and thus reduce the operating costs of the enterprise. At the same time, it can avoid the discharge of flue gas and play a role in protecting the environment.

[0011] 2. Simple structure and easy operation. When operation is required above the arc furnace, the roller shutter can be quickly retracted without occupying the operating space above the arc furnace. It can be quickly lowered when in use, which is convenient and fast. It can also facilitate the repair and maintenance of the arc furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model.

[0013] The accompanying drawings are marked as follows: 1-positioning frame, 2-sky cover, 3-rolling assembly, 4-rolling curtain, 5-motor, 6-rotating shaft, 7-retracting roller, 8-bearing support. DETAILED DESCRIPTION

[0014] The following is a clear and complete description of the technical solution of the utility model in conjunction with the accompanying drawings of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] like Figure 1 A smoke guide device for an electric arc furnace shown in the figure comprises a positioning frame 1, which is installed on the periphery of a sky cover 2 and is used to position a reeling assembly 3. A roller blind 4 is connected to the bottom edge of the sky cover 2, and the roller blind 4 is retracted and released by the reeling assembly 3. The reeling assembly 3 and the roller blind 4 are synchronously provided with multiple groups, and after the multiple groups of roller blinds 4 are fully unfolded, the ends form an air collecting port, and the air collecting port gathers and guides the smoke discharged from the electric arc furnace to the sky cover 2. In order to avoid smoke leakage from the gap between two adjacent roller blinds 4, the multiple groups of roller blinds 4 can be designed as a whole ring-shaped closed block, and the multiple groups of reeling assemblies 3 are synchronously driven to rise and fall.

[0016] In this embodiment, the winding assembly 3 includes a motor 5, the output shaft of the motor 5 is connected to a rotating shaft 6, and a plurality of winding rollers 7 are coaxially and evenly fixed on the rotating shaft 6. The winding rollers 7 are used for winding ropes, and the ropes are used for pulling the roller blind 4.

[0017] In this embodiment, the rotating shaft 6 is supported by multiple groups of bearing supports 8 .

[0018] In this embodiment, the positioning frame 1 is a rectangular frame formed by welding square tubes, and a group of winding components 3 are respectively installed on the four square tubes of the rectangular frame.

[0019] In this embodiment, a plurality of groups of rolling curtains 4 are synchronously driven to rise and fall by the retracting assembly 3 .

[0020] The smoke guide device is installed on the canopy 2. When the roller blinds 4 are fully unfolded, the distance between the air collecting port formed at the end of the four groups of roller blinds 4 and the electric arc furnace is much smaller than the distance between the inlet of the canopy 2 and the electric arc furnace. On the basis of achieving the same suction effect, a smaller power fan can be used or the working time of the fan can be reduced, which has the effect of energy saving, and can suck the smoke generated by the steelmaking of the electric arc furnace faster and more accurately, preventing the smoke from overflowing into the factory area due to the long distance during the rising process, thereby polluting the site. Among them, the rope used to pull the roller blinds 4 is not shown in the attached figure.

[0021] The smoke guide device can greatly improve the efficiency of extracting smoke generated by the electric arc furnace, reduce energy consumption in this link, and thus reduce the operating costs of the enterprise. At the same time, it can avoid smoke discharge and play a role in protecting the environment. It has a simple structure and is easy to operate. When operations are required above the electric arc furnace, the roller shutter 4 can be quickly retracted without occupying the operating space above the electric arc furnace. It can be quickly lowered when in use, which is convenient and fast. It can also provide convenience for the repair and maintenance of the electric arc furnace.

[0022] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flue gas guiding device for an electric arc furnace, characterized in that: It includes a positioning frame, which is installed on the periphery of the sky cover and is used to position the retracting assembly. The bottom edge of the sky cover is connected to a roller blind, which is retracted and released by the retracting assembly. Multiple groups of the retracting assembly and the roller blind are synchronously provided. When the multiple groups of roller blinds are fully unfolded, air collecting ports are formed at the ends. The air collecting ports gather the smoke discharged from the electric arc furnace and guide it to the sky cover.

2. The smoke guiding device according to claim 1, characterized in that: The winding assembly comprises a motor, the output shaft of the motor is connected to a rotating shaft, a plurality of winding rollers are coaxially and evenly fixed on the rotating shaft, the winding rollers are used for winding ropes, and the ropes are used for pulling the roller blinds.

3. The smoke guiding device according to claim 2, characterized in that: The rotating shaft is supported by multiple groups of bearing supports.

4. The smoke guiding device according to claim 1, characterized in that: The positioning frame is a rectangular frame formed by welding square tubes, and a group of winding components are respectively installed on the four square tubes of the rectangular frame.

5. The smoke guiding device according to claim 1, characterized in that: A plurality of groups of rolling curtains are synchronously driven to rise and fall through the rolling assembly.

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