Double-station moving dust removal cover of LF refining furnace capable of preventing smoke overflow

Abstract

The utility model discloses a kind of anti-smoke gas overflow's LF refining furnace double-station mobile dust removal cover, comprising: the upper side of the LF refining furnace body is provided with furnace cover body, and furnace cover body is about the vertical central axis of LF refining furnace body left-right symmetry;The upper side of the LF refining furnace body is provided with the moving mechanism for dedusting, and the upper side of LF refining furnace body is provided with mobile cover steel frame by universal wheel. The anti-smoke gas overflow's LF refining furnace double-station mobile dust removal cover, rotating threaded rod can make mobile dust removal cover body rotate, and the upper side of mobile dust removal cover body is provided with limit rod, limit rod plays the role of limiting mobile dust removal cover body, in addition telescopic tube can be telescopic, to facilitate adjusting the position of mobile dust removal cover body to dedust, when air pump works, overflowed smoke dust can be absorbed into dust removal box, continue to be transported after the filtration of filter plate, and filter plate and limit groove are slidably connected, convenient cleaning.

Description

Technical Field

[0001] This utility model relates to the field of dust removal technology for smelting equipment, specifically a dual-station mobile dust removal hood for an LF refining furnace that prevents flue gas from overflowing. Background Technology

[0002] The existing dust removal system for LF refining furnaces generally only uses the side suction port of the furnace cover for dust collection. During smelting and charging, flue gas overflows from the electrodes and gaps in the furnace cover, and the overflow is even greater after the furnace cover is raised. The original side suction port of the furnace cover cannot ensure the collection of flue gas throughout the entire refining process. According to the national document "Opinions on Promoting the Implementation of Ultra-Low Emissions in the Iron and Steel Industry" (Environmental Protection and Control

[2019] No. 35), 3. Production process. Dust-generating points such as sintering furnace, blast furnace, molten steel pretreatment, converter, electric furnace, refining furnace, lime kiln, and dolomite kiln should comprehensively strengthen the gas collection capacity to ensure that no visible smoke or dust escapes. In addition, in accordance with the requirements for fugitive control in the "Performance Indicators and Emission Reduction Measures for Long-Process Iron and Steel Industry", no visible smoke or dust should escape from dust-generating points such as blast furnace, molten steel pretreatment, converter, electric furnace, refining furnace, lime kiln, and dolomite kiln.

[0003] However, during the use of common dual-station dust collectors for LF refining furnaces, flue gas is prone to overflow during smelting and charging, especially when the electrodes and furnace cover gaps are exposed or the furnace cover is raised. The overflowing flue gas not only pollutes the environment but also affects the respiratory health of operators. Therefore, there is still room for improvement.

[0004] Therefore, we propose a dual-position movable dust collector hood for the LF refining furnace to prevent flue gas overflow, in order to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide a dual-station movable dust collector for LF refining furnaces that prevents flue gas overflow, in order to solve the problem mentioned in the background art that common dual-station dust collectors for LF refining furnaces easily cause flue gas to overflow during use, such as during smelting and charging, when the electrode and furnace cover gaps are exposed, and after the furnace cover is raised. The overflowing flue gas not only pollutes the environment but also affects the respiratory health of operators. Therefore, there is still room for further improvement.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dual-station movable dust collector hood for an LF refining furnace to prevent flue gas overflow, comprising:

[0007] The LF refining furnace body has a furnace cover body on its upper side, and the furnace cover body is symmetrical about the vertical central axis of the LF refining furnace body.

[0008] Also includes:

[0009] The upper side of the LF refining furnace body is provided with a moving mechanism for dust removal, and the upper side of the LF refining furnace body is provided with a movable cover steel frame via casters, and the movable cover steel frame is symmetrical about the vertical central axis of the LF refining furnace body.

[0010] The upper side of the movable cover steel frame is equipped with a filter mechanism for dust removal, and a dust removal box is installed above the movable cover steel frame.

[0011] Preferably, a fixed cover steel frame is provided in the middle of the upper side of the LF refining furnace body, and a fixed dust removal cover body is provided inside the fixed cover steel frame.

[0012] Preferably, the moving mechanism is composed of a connecting plate, a threaded rod, a movable dust collector hood body, a limiting rod, a telescopic pipe, a dust collector pipe, and an electric butterfly valve. The connecting plate is located on the upper side of the movable hood steel frame, and the connecting plate is threadedly connected to the threaded rod, and the threaded rod is rotatably connected to the movable dust collector hood body.

[0013] Preferably, the upper side of the movable dust removal hood body is provided with limiting rods, and the limiting rods are distributed in an array, and the limiting rods are slidably connected to the connecting plate.

[0014] Preferably, a telescopic tube is provided on the upper side of the mobile dust removal hood body, and the telescopic tube is fixedly connected to the dust removal pipe, and an electric butterfly valve is provided inside the dust removal pipe.

[0015] Preferably, the filtration mechanism is composed of an air pump, a dust collection box, a box cover, a limiting groove, and a filter plate. The air pump is fixedly connected to the dust collection pipeline and is located on the upper side of the connecting plate. The air pump is also connected to the dust collection box through an air supply pipe.

[0016] Preferably, the upper side of the dust collector is rotatably connected to the cover, and the interior of the dust collector is provided with limiting grooves, which are arranged in an array, and the limiting grooves are slidably connected to the filter plate.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: the LF refining furnace dual-station movable dust collector cover that prevents flue gas overflow can rotate the main body of the movable dust collector cover by rotating the threaded rod, and a limit rod is provided on the upper side of the main body of the movable dust collector cover, which plays a limiting role in the movement of the main body of the movable dust collector cover. In addition, the telescopic tube can extend and retract, thereby facilitating the adjustment of the position of the main body of the movable dust collector cover for dust removal. When the air pump is working, the overflowing flue gas will be absorbed into the dust collection box, filtered by the filter plate and then conveyed. The filter plate is slidably connected to the limit groove for easy cleaning.

[0018] 1. The furnace body, furnace cover body and fixed cover steel frame of the LF refining furnace are provided. A pair of furnace cover bodies are opened on the upper side of the LF refining furnace body to enhance working efficiency;

[0019] 2. The furnace body of the LF refining furnace is provided, the fixed cover steel frame is provided, and the fixed dust removal hood body is provided inside the fixed cover steel frame. The fixed dust removal hood body can absorb the dust overflowing from the paired furnace cover bodies, thereby enhancing the dust removal effect.

[0020] 3. It is equipped with a movable hood steel frame, connecting plate and threaded rod. The lower side of the movable hood steel frame is equipped with casters for easy movement. The upper side of the movable hood steel frame is equipped with a connecting plate for easy adjustment of the position of the movable dust collector hood body.

[0021] 4. It is equipped with a threaded rod, a limiting rod, and a telescopic tube. Rotating the threaded rod will cause the mobile dust collector body to rotate. The upper side of the mobile dust collector body is equipped with a limiting rod, which limits the position of the mobile dust collector body. In addition, the telescopic tube can extend and retract, so as to facilitate the adjustment of the position of the mobile dust collector body for dust removal.

[0022] 5. Equipped with a dust collection box, a limiting groove, and a filter plate, when the air pump is working, the overflowing smoke and dust will be absorbed into the dust collection box, filtered by the filter plate, and then conveyed. The filter plate is slidably connected to the limiting groove for easy cleaning. Attached Figure Description

[0023] Figure 1 This is a front-view three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a rear-view three-dimensional structural diagram of the present invention;

[0025] Figure 3 This is a bottom view of the steel frame structure of the movable cover of this utility model;

[0026] Figure 4 This is a schematic diagram of the connection structure of the mobile dust removal hood body, dust removal pipe and dust removal box of this utility model;

[0027] Figure 5 This is a schematic diagram of the connection structure between the dust collector and the filter plate of this utility model.

[0028] In the diagram: 1. LF refining furnace body; 2. Furnace cover body; 3. Fixed cover steel frame; 4. Fixed dust collector cover body; 5. Movable cover steel frame; 6. Connecting plate; 7. Threaded rod; 8. Movable dust collector cover body; 9. Limiting rod; 10. Telescopic pipe; 11. Dust collection pipe; 12. Electric butterfly valve; 13. Air pump; 14. Dust collector box; 15. Box cover; 16. Limiting groove; 17. Filter plate. Detailed Implementation

[0029] 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.

[0030] Please see Figure 1-5 As shown, this utility model provides a technical solution: a dual-position movable dust collector hood for an LF refining furnace to prevent flue gas overflow, comprising: an LF refining furnace body 1, a furnace cover body 2, a fixed cover steel frame 3, a fixed dust collector hood body 4, a movable cover steel frame 5, a connecting plate 6, a threaded rod 7, a movable dust collector hood body 8, a limiting rod 9, a telescopic pipe 10, a dust collection pipe 11, an electric butterfly valve 12, an air pump 13, a dust collection box 14, a box cover 15, a limiting groove 16, and a filter plate 17.

[0031] During the use of common dual-station dust collectors for LF refining furnaces, flue gas tends to overflow during smelting and charging processes, especially when the furnace cover is raised or the electrode gaps are exposed. This overflowing flue gas not only pollutes the environment but also affects the respiratory health of operators, thus there is room for further improvement.

[0032] like Figure 1 and Figure 2 As shown, the dual-station LF refining furnace refers to a system in which a pair of furnace cover bodies 2 are provided on the upper side of the furnace body 1, and a fixed cover steel frame 3 is provided on the upper side of the furnace body 1. A fixed dust removal hood body 4 is provided inside the fixed cover steel frame 3. By opening the furnace cover bodies 2 simultaneously or alternately, the layout can improve production efficiency and reduce equipment downtime, thereby enhancing work efficiency. In addition, the furnace cover bodies 2 and the movable dust removal hood bodies 8 correspond one-to-one for easy handling.

[0033] In addition, in the dual-station LF refining furnace, the fixed dust collector hood body 4 serves as an auxiliary collector for the mobile dust collector hood body 8, reducing dust escape. The combined use of the fixed dust collector hood body 4 and the mobile dust collector hood body 8 can significantly improve the environmental performance and production continuity of the dual-station LF, and can also achieve more efficient and flexible dust collection. Moreover, the fixed dust collector hood body 4 has a simple structure, does not need to be moved, and is designed to withstand high temperatures. When the furnace cover body 2 is opened, the fixed dust collector hood body 4 can absorb the dust overflowing from the paired furnace cover bodies 2, thereby enhancing the dust removal effect. In addition, the fixed dust collector hood body 4 is also connected to the corresponding dust removal pipe 11.

[0034] like Figure 1 , Figure 3 and Figure 4As shown, the lower side of the movable hood steel frame 5 is equipped with casters. The movable hood steel frame 5 is mounted on the upper side of the LF refining furnace body 1 via the casters, facilitating movement and stopping. A connecting plate 6 is provided on the upper side of the movable hood steel frame 5, allowing adjustment of the position of the movable dust hood body 8 via a threaded rod 7 and a limiting rod 9. Since the threaded rod 7 is rotatably connected to the movable dust hood body 8 and threadedly connected to the connecting plate 6, rotating the threaded rod 7 allows the movable dust hood body 8 to move up and down relative to the connecting plate 6, facilitating the absorption and treatment of overflowing flue gas when the furnace cover body 2 is opened. A limiting rod 9 is provided on the upper side of the movable dust hood body 8, which limits the movement of the movable dust hood body 8, ensuring its vertical lifting and lowering.

[0035] In addition, the telescopic pipe 10 can extend and retract. When the position of the dust collector hood body 8 is adjusted up and down, the telescopic pipe 10 will extend and retract, thereby ensuring that the absorbed flue gas will not overflow again. The electric butterfly valve 12 on the upper side of the dust collector pipe 11 and the air pump 13 connected to the dust collector pipe 11 are activated. During smelting and feeding, the flue gas generated by the electrode and furnace cover gaps and after the furnace cover is raised will be absorbed into the dust collector pipe 11 and then transported to the dust collector box 14 for filtration treatment, reducing the harm to the environment and the human body.

[0036] like Figure 1 and Figure 5 As shown, the conveyed flue gas enters the dust collector 14. The dust collector 14 is provided with a limiting groove 16 inside, and the filter plate 17 is slidably connected to the limiting groove 16. Therefore, the flue gas will be filtered by the filter plate 17 and then conveyed into the pipeline. The filtered flue gas can reduce the steps of subsequent treatment and is convenient to use. The dust collector 14 is rotatably connected to one end of the cover 15, and the other end of the dust collector 14 is fixedly connected to the cover 15 by a snap-fit ​​assembly. After opening the cover 15, the filter plate 17 can be taken out from the limiting groove 16 for cleaning or replacement, thereby enhancing the filtration effect. The LF refining furnace generates a large amount of dust during the steelmaking process. Equipping it with an efficient dust removal system can directly affect the dust collection efficiency and the safety of the working environment.

[0037] The contents not described in detail in this specification are existing technologies known to those skilled in the art. All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0038] 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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dual-position movable dust collector hood for an LF refining furnace to prevent flue gas overflow, comprising: The LF refining furnace body (1) is provided with a furnace cover body (2) on the upper side of the LF refining furnace body (1), and the furnace cover body (2) is symmetrical about the vertical central axis of the LF refining furnace body (1). Its characteristic is that it further includes: The upper side of the LF refining furnace body (1) is provided with a moving mechanism for dust removal, and the upper side of the LF refining furnace body (1) is provided with a moving cover steel frame (5) via universal wheels, and the moving cover steel frame (5) is symmetrical about the vertical central axis of the LF refining furnace body (1). The upper side of the movable cover steel frame (5) is provided with a filter mechanism for dust removal, and a dust removal box (14) is provided above the movable cover steel frame (5).

2. The dual-station movable dust collector hood for an LF refining furnace according to claim 1, characterized in that: A fixed cover steel frame (3) is provided on the upper middle side of the LF refining furnace body (1), and a fixed dust removal cover body (4) is provided inside the fixed cover steel frame (3).

3. The dual-position movable dust collector hood for an LF refining furnace according to claim 1, characterized in that: The moving mechanism is composed of a connecting plate (6), a threaded rod (7), a moving dust hood body (8), a limiting rod (9), a telescopic tube (10), a dust removal pipe (11), and an electric butterfly valve (12). The connecting plate (6) is set on the upper side of the moving hood steel frame (5), and the connecting plate (6) is threadedly connected to the threaded rod (7), and the threaded rod (7) is rotatably connected to the moving dust hood body (8).

4. The dual-position movable dust collector hood for an LF refining furnace according to claim 3, characterized in that: The upper side of the mobile dust removal hood body (8) is provided with limiting rods (9), and the limiting rods (9) are arranged in an array, and the limiting rods (9) are slidably connected to the connecting plate (6).

5. The dual-station movable dust collector hood for preventing flue gas overflow in an LF refining furnace according to claim 4, characterized in that: The upper side of the mobile dust removal hood body (8) is provided with a telescopic pipe (10), and the telescopic pipe (10) is fixedly connected to the dust removal pipe (11), and an electric butterfly valve (12) is provided inside the dust removal pipe (11).

6. The dual-station movable dust collector hood for an LF refining furnace according to claim 1, characterized in that: The filtration mechanism is composed of an air pump (13), a dust collection box (14), a box cover (15), a limiting groove (16), and a filter plate (17). The air pump (13) is fixedly connected to the dust collection pipe (11), and the air pump (13) is located on the upper side of the connecting plate (6). The air pump (13) is connected to the dust collection box (14) through an air supply pipe.

7. The dual-station movable dust collector hood for an LF refining furnace according to claim 6, characterized in that: The upper side of the dust collector (14) is rotatably connected to the cover (15), and the interior of the dust collector (14) is provided with a limiting groove (16), which is arranged in an array. The limiting groove (16) is slidably connected to the filter plate (17).

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