A dust collecting device for a furnace door of an aluminum melting furnace

Abstract

The utility model relates to the field of aluminium melting furnace dust collection technology, concretely relates to a kind of aluminium melting furnace furnace door dust collection device, including smoke hood, fan and air duct, the smoke hood is set in aluminium melting furnace furnace door upper portion, and smoke hood is fixedly connected with aluminium melting furnace;Smoke hood inside is provided with smoke dust filter device;The lower portion both sides of smoke hood are fixed with smoke hood side plate, and the smoke hood side plate is set in aluminium melting furnace furnace door both sides;The air duct is set in the upper portion of smoke hood and is communicated with smoke hood;The fan is connected with air duct;The upper portion of fan is communicated with chimney.The utility model is set by the both sides of smoke hood smoke hood side plate, prevent smoke dust from both sides to workshop diffusion, can guide smoke gas ascending flow direction smoke hood simultaneously effectively.By setting smoke dust filter device in smoke hood, effectively absorb smoke dust while being able to filter smoke dust, purify flue gas while protecting subsequent equipment.

Description

Technical Field

[0001] This utility model relates to the field of dust collection technology for aluminum melting furnaces, and in particular to a dust collection device for aluminum melting furnace doors. Background Technology

[0002] Existing aluminum melting furnace doors primarily employ two types of fume hoods: receiving hoods and uniform suction hoods. The effectiveness of these two types of hoods is influenced by the airflow distribution of the dust removal system and the hood's own structure. They cannot effectively absorb the smoke and dust generated at the furnace door during refining, slag removal, and other processes. During refining or slag removal, a large amount of smoke and dust generated at the furnace door can easily diffuse into the workshop, polluting the environment. Furthermore, the accumulation of smoke and dust within the hoods and ducts can cause them to narrow, affecting the amount of flue gas drawn in at one time. Summary of the Invention

[0003] To address the problem that existing fume hoods cannot effectively absorb the smoke and dust generated at the furnace door during refining, slag removal, and other processes, this utility model provides a dust collection device for aluminum melting furnace doors. This device involves installing a fume hood and side panels at the furnace door, a duct and fan at the top of the fume hood, and a dust filtration device inside the fume hood. This effectively absorbs the smoke and dust generated at the furnace door during refining, slag removal, and other processes.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A dust collection device for an aluminum melting furnace door includes a fume hood, a fan, and an air duct. The fume hood is installed on the upper part of the aluminum melting furnace door and is fixedly connected to the furnace. A dust filter is installed inside the fume hood. Side plates are fixed to both sides of the lower part of the fume hood, and these side plates are located on both sides of the furnace door. The air duct is located on the upper part of the fume hood and communicates with it. The fan is connected to the air duct, and a chimney is connected to the upper part of the fan. The side plates on both sides of the fume hood prevent dust from spreading into the workshop from both sides, while effectively guiding the flue gas upwards towards the fume hood. By installing a dust filter inside the fume hood, dust is effectively absorbed and filtered, protecting downstream equipment and purifying the flue gas.

[0006] Furthermore, the fume filtration device includes a primary filter and a secondary filter. The primary filter is fixed at the fume hood vent and connected to the vent. The secondary filter is positioned between the duct and the fume hood and is fixedly connected to the side wall of the fume hood. Through the primary and secondary filters, the flue gas undergoes initial filtration or dust settling immediately upon entering the fume hood. This reduces dust deposition inside the fume hood and in subsequent equipment, prevents narrowing or blockage of the hood's channels, ensures smooth gas flow and stable negative pressure, rapidly removes large dust particles, and reduces the risk of dust re-escape during long-distance transport pipelines due to wind speed changes or collisions. It also purifies the flue gas.

[0007] Furthermore, the primary filtration device includes multiple filter plates, each filter plate having a slit-shaped structure; these multiple filter plates are laid flat at the fume hood vent; both ends of each filter plate are connected to the vent. The arrangement of the filter plates allows for forced segmentation and redistribution of the flue gas, helping to disperse concentrated high-speed airflow and ensure it passes evenly through the entire vent. This uniform airflow significantly reduces system resistance and improves fan efficiency. Simultaneously, it provides preliminary filtration or guides dust settling, ensuring smooth flue gas flow and stable negative pressure.

[0008] Furthermore, the secondary filtration device includes multiple filter plates, each a mesh structure made of steel wire; these filter plates are arranged linearly and laterally within the fume hood; and are fixedly connected to the side wall of the fume hood. This effectively intercepts small molten particles or sparks that may splash out of the furnace, preventing fires in subsequent equipment. Simultaneously, it effectively captures dust particles in the flue gas, reducing wear and impact on the fan, lowering the pipe wear rate, and extending equipment lifespan.

[0009] Furthermore, a connecting seat is fixed to the side plate of the fume hood, and the connecting seat is connected to the aluminum melting furnace by bolts. An embedded part is fixed to the bottom of the side plate of the fume hood. The connection part and the embedded part improve the stability of the fume hood side plate.

[0010] Furthermore, the width of the fume hood side panel is greater than the width of the fume hood. During installation, the portion of the fume hood side panel extending beyond the fume hood faces the aluminum melting furnace. Connecting seats are symmetrically arranged on the fume hood side panel, allowing the connecting seats to engage between the aluminum melting furnace and the furnace door. The aluminum melting furnace and the fume hood side panel are then fixed together by bolts. This arrangement prevents the fume hood from obstructing the raising and lowering of the aluminum melting furnace door.

[0011] The beneficial effects of this utility model through the above technical solution are:

[0012] This invention features side panels on both sides of the fume hood to prevent smoke and dust from spreading into the workshop from the sides, while effectively guiding the flue gas upwards towards the fume hood. A smoke and dust filtration device is installed inside the fume hood to effectively absorb and filter smoke and dust, purifying the flue gas and protecting downstream equipment.

[0013] This invention, through the installation of a primary and secondary filtration device, filters or guides dust settling, reducing dust accumulation inside the fume hood and in subsequent equipment. This prevents dust buildup and blockage within the fume hood and ductwork, ensuring smooth gas flow, rapidly removing large dust particles, and reducing the risk of dust re-escape during long-distance transport pipelines due to wind speed changes and collisions. It also purifies the flue gas. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a dust collection device for the furnace door of an aluminum melting furnace according to this utility model.

[0015] Figure 2 This is a schematic diagram of the fume hood structure of a dust collection device for an aluminum melting furnace door according to this utility model.

[0016] Figure 3 This is a side view of the fume hood of a dust collection device for an aluminum melting furnace door according to this utility model.

[0017] Figure 4 This is a top view of the fume hood of a dust collection device for an aluminum melting furnace door according to this utility model.

[0018] Figure 5 This is a schematic diagram of the internal structure of the fume hood of a dust collection device for an aluminum melting furnace door according to this utility model.

[0019] Figure 6 This is a schematic diagram of the installation structure of the fume hood and filter plate of a dust collection device for an aluminum melting furnace door according to this utility model.

[0020] Figure 7 This is a top view of the installation structure of the fume hood and aluminum melting furnace of the dust collection device for the furnace door of the present invention.

[0021] The attached diagram is labeled as follows: 1. Fume hood, 2. Fume hood side plate, 3. Air duct, 4. Fan, 5. Chimney, 6. Embedded part, 7. Connecting hole, 8. Connecting seat, 9. Filter plate one, 10. Filter plate two, 11. Aluminum melting furnace door, 12. Aluminum melting furnace. Detailed Implementation

[0022] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings:

[0023] like Figures 1-7 As shown, a dust collection device for an aluminum melting furnace door includes a fume hood 1, a fan 4, and an air duct 3. The aluminum melting furnace 12 has a furnace opening on its side, and an aluminum melting furnace door 11 is connected to the furnace opening. The furnace opening can be opened and closed by raising and lowering the aluminum melting furnace door 11. The fume hood 1 is located above the aluminum melting furnace door 11 and is at a distance from the aluminum melting furnace door 11 to facilitate the raising and lowering of the aluminum melting furnace door 11. The upper part of the fume hood 1 has a frustum-shaped structure, and the lower part has a rectangular structure. The fume hood 1 is fixedly connected to the aluminum melting furnace 12.

[0024] A dust filter is installed on the inner side of the lower part of the fume hood 1. Side panels 2 are connected to the bottom of the fume hood 1 on both sides. The side panels 2 have a pentagonal structure and two embedded parts 6 (bolts) are installed at the bottom of the side panels 2. The side panels 2 are located on both sides of the furnace door 11 of the aluminum melting furnace, and the top width of the side panels 2 is greater than the bottom width of the fume hood 1. To improve the stability of the connection during installation, connecting seats 8 are also provided on the side panels 2. Bolts are installed on the connecting seats 8, and the connecting seats 8 are connected to the aluminum melting furnace 12 by bolts. During installation, the portion of the side panels 2 extending beyond the fume hood 1 faces the aluminum melting furnace 12. The connecting seats 8 are symmetrically arranged on the side panels 2, so that the connecting seats 8 are engaged between the aluminum melting furnace 12 and the furnace door 11. The aluminum melting furnace 12 is then fixed to the side panels 2 by bolts. This arrangement prevents the fume hood 1 from obstructing the raising and lowering of the furnace door 11.

[0025] The air duct 3 is located on the upper part of the fume hood 1 and communicates with the fume hood 1; the top of the fume hood 1 has a connecting hole 7, and the air duct 3 communicates with the connecting hole 7 on the fume hood 1; the fan 4 is communicated with the air duct 3; and the fan 4 is also connected to a chimney 5. The smoke and dust generated by combustion, slag removal, or refining in the aluminum melting furnace 12 are discharged from the chimney 5 after passing through the fume hood 1, the smoke and dust filter device, the air duct 3, and the fan 4.

[0026] The smoke and dust filtration device includes a primary filtration device and a secondary filtration device; the primary filtration device is fixed at the air vent of the fume hood 1 and connected to the air vent of the fume hood 1; the secondary filtration device is disposed between the primary filtration device and the fume hood 1; the secondary filtration device prevents sparks from flying.

[0027] The primary filtration device includes multiple filter plates 9, each filter plate 9 having a slit-shaped structure; the multiple filter plates 9 are laid flat along the length of 1 to the air outlet of the fume hood 1, and both ends of the filter plates 9 are connected to the air outlet; there is a gap between adjacent filter plates 9.

[0028] The secondary filtration device includes multiple filter plates 10, each filter plate 10 being a mesh plate structure made of steel wire. The multiple filter plates 10 are arranged linearly and laterally inside the smoke hood 1; the filter plates 10 are fixedly connected to the side wall of the smoke hood 1.

[0029] During installation, the portion of the side panel 2 extending beyond the fume hood 1 faces the aluminum melting furnace 12. The side panel 2 is connected to the embedded part 6, and the connecting seat 8 is symmetrically arranged on the side panel 2, so that the connecting seat 8 is snapped between the aluminum melting furnace 12 and the furnace door 11. The aluminum melting furnace 12 and the side panel 2 are fixed by bolts. This arrangement can prevent the fume hood 1 from blocking the rise and fall of the furnace door 11.

[0030] When slag removal or refining generates fumes, the side panels 2 of the fume hoods on both sides form a physical barrier to prevent fumes from spreading into the workshop from both sides. Simultaneously, they effectively guide the rising flue gas flow towards the fume hood 1, activating the blower 4. The blower 4 absorbs the fumes through the air duct 3 and the fume hood 1. The fumes pass through a primary filtration device; the filter plate 9 transforms the concentrated air inlet into multiple narrow slits, forcing the airflow to be drawn in more evenly along the length of these slits when entering the fume hood 1. This ensures uniform airflow distribution and avoids pressure differences caused by uneven airflow distribution within the air duct 3, which could prevent effective fumes intake. A secondary filtration device is installed inside the fume hood 1, effectively intercepting small molten particles or sparks that may splash from the furnace, preventing fires in subsequent equipment. It also effectively captures dust particles in the flue gas, reducing wear and impact on the blower 4, lowering the pipe wear rate, and extending equipment lifespan.

[0031] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A dust collection device for the furnace door of an aluminum melting furnace, characterized in that, The system includes a fume hood (1), a fan (4), and an air duct (3). The fume hood (1) is located on the upper part of the furnace door (11) of the aluminum melting furnace and is fixedly connected to the aluminum melting furnace (12). A dust filter is installed inside the fume hood (1). Side plates (2) are fixed on both sides of the lower part of the fume hood (1) and are located on both sides of the furnace door (11) of the aluminum melting furnace. The air duct (3) is located on the upper part of the fume hood (1) and is connected to the fume hood (1). The fan (4) is connected to the air duct (3). A chimney (5) is connected to the upper part of the fan (4).

2. The dust collection device for the furnace door of an aluminum melting furnace according to claim 1, characterized in that, The dust filtration device includes a primary filtration device and a secondary filtration device; the primary filtration device is fixed at the air vent of the fume hood (1) and is connected to the air vent of the fume hood (1); the secondary filtration device is located between the air duct (3) and the fume hood (1); the secondary filtration device is fixedly connected to the side wall of the fume hood (1).

3. The dust collection device for the furnace door of an aluminum melting furnace according to claim 2, characterized in that, The primary filtration device includes multiple filter plates (9), each filter plate (9) having a slit-shaped structure; multiple filter plates (9) are laid flat at the air vent of the fume hood (1); both ends of the filter plates (9) are connected to the air vent.

4. The dust collection device for the furnace door of an aluminum melting furnace according to claim 2, characterized in that, The secondary filtration device includes multiple filter plates (10), which are mesh plate structures made of steel wire. The multiple filter plates (10) are arranged in a linear transverse manner inside the smoke hood (1). The filter plates (10) are fixedly connected to the side wall of the smoke hood (1).

5. The dust collection device for the furnace door of an aluminum melting furnace according to claim 1, characterized in that, A connecting seat (8) is fixed on the side plate (2) of the fume hood. The connecting seat (8) is connected to the aluminum melting furnace (12) by bolts. An embedded part (6) is fixed at the bottom of the side plate (2).

6. The dust collection device for the furnace door of an aluminum melting furnace according to claim 5, characterized in that, The width of the side panel (2) of the smoke hood is greater than the width of the smoke hood (1).

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