Smoke removal device for aluminum alloy melting crucible

Abstract

The utility model relates to a smoke removal device for an aluminum alloy melting crucible. A basic smoke removal framework is formed by a negative pressure smoke exhaust pipe arranged on a room body structural beam and a smoke removal communicating pipe communicated with the negative pressure smoke exhaust pipe. A bottom stand column, a rotary oil cylinder, a rotary plate, an upper stand column, a pull rod mounting frame, a lifting air cylinder, a first pull rod, a second pull rod, an end connecting frame, a smoke hood connecting piece and a smoke removal hood are further arranged. The rotary oil cylinder can drive the rotary plate to rotate and drive the smoke removal hood to move horizontally, and when a worker adds aluminum into the crucible, the smoke removal hood can be conveniently rotated away from an operation area and can return after charging is completed. The lifting air cylinder controls the smoke removal cover to ascend and descend in the vertical direction by means of a linkage structure formed by a first pull rod, a second pull rod and the like, so that the smoke removal cover is in butt joint with the smoke removal communicating pipe. The hidden danger of smoke leakage is reduced, the smoke exhaust efficiency is comprehensively improved, and an excellent environment is created for an aluminum alloy melting workshop.

Description

Technical Field

[0001] This utility model relates to the technical field of aluminum alloy processing equipment, specifically to a smoke removal device for an aluminum alloy melting crucible. Background Technology

[0002] In the aluminum alloy melting process, on the one hand, the crucible continuously generates a large amount of smoke and dust during the melting of aluminum. If this smoke and dust is not treated effectively and promptly, it will pollute the workshop environment, harm the health of workers, and may also adversely affect the quality of the aluminum alloy. On the other hand, workers need to frequently add aluminum to the crucible, and traditional fixed smoke extraction devices often hinder worker operations and reduce work efficiency. Therefore, there is an urgent need for a smoke extraction device that can both efficiently remove smoke and facilitate worker operations. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] The technical problem this invention aims to solve is: the crucible generates a large amount of harmful fumes when melting aluminum, and the traditional fixed fume extraction device is inconvenient for workers to add aluminum to the crucible.

[0005] (II) Technical Solution

[0006] To solve the above problems, this utility model provides the following technical solution:

[0007] A smoke removal device for an aluminum alloy melting crucible includes a negative pressure exhaust pipe installed on the structural beam of the building, with a smoke removal connecting pipe connected to the negative pressure exhaust pipe. It also includes a bottom column, a rotary cylinder, a rotary plate, an upper column, a tie rod mounting frame, a lifting cylinder, a first tie rod, a second tie rod, an end connecting frame, a smoke hood connector, and a smoke removal hood. The cylinder body of the rotary cylinder is inherently connected to the upper end face of the bottom column, and its output shaft is connected to the lower end face of the rotary plate. The upper end face of the rotary plate is inherently connected to the lower end face of the upper column, and the tie rod mounting frame is inherently located on the upper end face of the upper column.

[0008] The first pull rod has a connecting plate on each of its two sides near the end of the lifting cylinder. The two connecting plates are inherently connected to the end of the lifting cylinder via a connecting shaft. The telescopic rod of the lifting cylinder is connected to the connecting shaft via a fisheye connector. The cylinder body of the lifting cylinder is connected to the rotary plate via a single-ear seat and a double-ear seat.

[0009] One end of the first pull rod is rotatably connected to the end connecting frame, and the side near the lifting cylinder is rotatably connected to the pull rod mounting frame;

[0010] One end of the second pull rod is rotatably connected to the end connecting frame, and the other end is rotatably connected to the pull rod mounting frame;

[0011] One end of the smoke hood connector is fixedly connected to the end connecting frame, and the other end is sleeved on the smoke hood. The upper part of the smoke hood has an internal tubular structure, and the lower part has an internally hollow structure with a trumpet-shaped shape.

[0012] Furthermore, the large flared opening of the fume hood is positioned facing the upper surface of the crucible.

[0013] Furthermore, the outer diameter of the upper part of the smoke hood is smaller than the inner diameter of the inner wall of the smoke removal connecting pipe.

[0014] Furthermore, the smoke hood connector includes a connecting part and a fixing part, one end of the connecting part is fixedly connected to the end connecting frame, and the other end is fixedly connected to the connecting part.

[0015] Furthermore, the connecting part has a circular structure and is inherently connected to the outer wall of the upper part of the smoke hood.

[0016] (III) Beneficial Effects

[0017] The beneficial effects of this utility model are:

[0018] This utility model's aluminum alloy melting crucible fume extraction device boasts significant advantages. The lower part of the fume extraction hood features a funnel-shaped design, allowing for large-area capture of rising smoke and dust. The upper part precisely connects to the fume extraction connecting pipe, with an outer diameter smaller than the inner diameter of the pipe. Combined with the annular fume extraction hood connector, this ensures leak-free and stable smoke transmission, resulting in highly efficient smoke extraction and significantly improved workshop air quality. A rotary hydraulic cylinder drives the fume extraction hood and other components to rotate, allowing workers to quickly evacuate from above the crucible during material loading and precisely return to their original position after operation—convenient and efficient. A lifting cylinder precisely adjusts the height of the fume extraction hood as needed, adapting to different working conditions and ensuring optimal smoke extraction. Attached image description:

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a structural schematic diagram of the concealed room structure beam and negative pressure exhaust pipe of this utility model;

[0021] Figure 3 This is a structural schematic diagram of the smoke hood connector of this utility model.

[0022] The markings in the diagram are: 1-Structural beam of the building, 2-Negative pressure exhaust pipe, 3-Smoke removal connecting pipe, 4-Bottom column, 5-Rotating cylinder, 6-Rotating plate, 7-Upper column, 8-Tie rod mounting frame, 9-Lifting cylinder, 10-First tie rod, 11-Second tie rod, 12-End connecting frame, 13-Smoke hood connector, 13a-Connecting part, 13b-Fixing part, 14-Smoke hood, 15-Connecting plate, 16-Connecting shaft, 17-Melting crucible. Detailed Implementation

[0023] 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.

[0024] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Please see Figures 1-3 The image shows a smoke removal device for an aluminum alloy melting crucible. The device includes a negative pressure exhaust pipe 2 mounted on a structural beam 1 of the building, connected to an external negative pressure smoke extraction system. A smoke removal connecting pipe 3 is connected to the negative pressure exhaust pipe 2. The device also includes a bottom column 4, a rotary cylinder 5, a rotary plate 6, an upper column 7, a pull rod mounting frame 8, a lifting cylinder 9, a first pull rod 10, a second pull rod 11, an end connecting frame 12, a smoke hood connector 13, and a smoke removal hood 14.

[0026] The cylinder body of the rotary cylinder 5 is inherently connected to the upper end face of the bottom column 4, and its output shaft is connected to the lower end face of the rotary plate 6. As a driving component, the rotary cylinder 5 can drive the rotary plate 6 to rotate flexibly. When workers need to add aluminum to the crucible, the fume hood 14 and its accessories can be quickly rotated to one side, completely opening the top of the crucible and ensuring convenient operation for workers. During aluminum alloy melting operations, it can rotate to the optimal working position directly above the crucible, ready to collect fumes at any time. The upper end face of the rotary plate 6 is inherently connected to the upper end face of the upper column 7. The tie rod mounting frame 8 is inherently located on the upper end face of the upper column 7.

[0027] The first pull rod 10 has a connecting plate 15 on each of its two sides near the end of the lifting cylinder 9. The two connecting plates 15 are inherently connected to the ends of the lifting cylinder 9 via a connecting shaft 16. The telescopic rod of the lifting cylinder 9 is connected to the connecting shaft 16 via a fisheye joint. With the help of the fisheye joint design, the lifting cylinder 9 can adapt to certain angle changes during telescopic movement, ensuring stable and smooth force transmission. The cylinder body of the lifting cylinder 9 is connected to the rotary plate 6 via a single-ear seat and a double-ear seat rotatable connection. This connection mode allows the lifting cylinder 9 to not only stably support the first pull rod 10, but also rotate flexibly during structural movement, in accordance with the overall dynamic requirements.

[0028] One end of the first pull rod 10 is rotatably connected to the end connecting frame 12, and the side near the lifting cylinder 9 is rotatably connected to the pull rod mounting frame 8. When the lifting cylinder 9 starts to extend or retract, the first pull rod 10 rotates with the connection part with the pull rod mounting frame 8 as the fulcrum, thereby driving the end connecting frame 12 to move up and down.

[0029] One end of the second tie rod 11 is rotatably connected to the end connecting frame 12, and the other end is rotatably connected to the tie rod mounting frame 8. It works in conjunction with the first tie rod 10 to provide auxiliary support and balance stability during the lifting and lowering of the end connecting frame 12, ensuring smooth movement and reducing swaying, deviation and other adverse conditions.

[0030] One end of the fume hood connector 13 is fixedly connected to the end connecting frame 12, and the other end is fitted onto the fume hood 14. The upper part of the fume hood 14 has an internal tubular structure, and the lower part has an internally hollow, trumpet-shaped structure. The lower trumpet-shaped structure is designed according to the diffusion properties of smoke and dust, which can capture smoke and dust rising from the crucible within the maximum range and expand the collection area; the upper tubular structure is specifically designed to connect with the fume hood connector 13 and the subsequent smoke exhaust channel to ensure smooth transmission of smoke and dust.

[0031] Furthermore, the large flared opening of the fume hood 14 is positioned facing the upper surface of the crucible to ensure that the smoke and dust generated during the entire aluminum alloy melting process can be drawn into the fume hood 14 with the highest efficiency, thus optimizing the smoke extraction effect.

[0032] Furthermore, the outer diameter of the upper part of the smoke hood 14 is smaller than the inner diameter of the inner wall of the smoke removal connecting pipe 3. This design facilitates lifting and docking. When it is necessary to enhance the smoke removal effect, the upper part of the smoke hood 14 can be precisely inserted into the smoke removal connecting pipe 3 by driving the lifting cylinder 9, forming a tight and seamless docking, reducing smoke leakage, and improving the sealing and smoke removal efficiency of the smoke exhaust system.

[0033] Furthermore, the smoke hood connector 13 includes a connecting part 13a and a fixing part 13b. One end of the connecting part 13a is fixedly connected to the end connecting frame 12, and the other end is fixedly connected to the connecting part 13a, thereby achieving effective clamping and stable connection of the smoke hood 14 and enhancing the overall structural strength and stability.

[0034] Furthermore, the connecting part 13a has a ring-shaped structure and is inherently connected to the outer wall of the upper part of the smoke hood 14. The ring-shaped structure fits tightly against the outer wall of the smoke hood 14, which not only ensures the sealing of the connection, but also evenly distributes the connection stress, effectively preventing damage to components or loosening of the connection caused by uneven local stress.

[0035] Working principle:

[0036] The negative pressure exhaust pipe 2 of this device is installed at a high position based on the structural beam 1 of the building, and is fixed on it, serving as the terminal negative pressure extraction channel for the entire smoke extraction process. The smoke removal connecting pipe 3 connects to the negative pressure exhaust pipe 2, guiding the collected smoke and dust to the negative pressure source. The bottom column 4 serves as the bottom support, standing firmly on the ground.

[0037] The rotary cylinder 5 is a key power component for enabling flexible horizontal adjustment of the device. Its cylinder body is rigidly connected to the upper surface of the bottom column 4, ensuring stability, while its output shaft is tightly connected to the lower surface of the rotary plate 6. When workers need to add aluminum or perform other operations into the crucible, the rotary cylinder 5 receives a control signal and starts, its output shaft driving the rotary plate 6 to rotate around its axis. Because the rotary plate 6, the upper column 7, the tie rod mounting frame 8, and a series of subsequent connected components form a rigid whole, the entire fume hood 14 and its associated linkage components rotate synchronously, quickly moving away from the area above the crucible to create an open and unobstructed operating space for the workers. After the operation is completed, the rotary cylinder 5 reverses, driving all components back to their original position directly above the crucible, ready for fume collection.

[0038] The lifting cylinder 9 controls the vertical displacement of the smoke hood 14 to achieve docking with the smoke removal connecting pipe 3. Connecting plates 15 are symmetrically arranged on both sides of the first pull rod 10 near the end of the lifting cylinder 9, and the two are connected by a connecting shaft 16 to form a stable connection node. The telescopic rod of the lifting cylinder 9 is connected to the connecting shaft 16 via a fisheye joint. This flexible connection method allows the telescopic rod to adapt to certain angle changes during extension and retraction, ensuring stable force transmission and avoiding structural jamming due to small angular deviations. Simultaneously, the cylinder body of the lifting cylinder 9 is rotatably connected to the rotating plate 6 using single-ear and double-ear seats, enabling it to both stably support the first pull rod 10 and rotate flexibly during overall structural movement.

[0039] When the lifting cylinder 9 initiates its extension and retraction action, based on the lever principle, the first pull rod 10 rotates, pulling the end connecting frame 12, with the rotational connection point between the first pull rod 10 and the pull rod mounting frame 8 as the fulcrum. At this time, the second pull rod 11 plays a synergistic stabilizing role, with its two ends rotatably connected to the end connecting frame 12 and the pull rod mounting frame 8 respectively. Together with the first pull rod 10, it forms a stable triangular mechanical structure, ensuring that the end connecting frame 12 moves smoothly and accurately during the lifting and lowering process, reducing swaying, deviation, and other adverse conditions. As the end connecting frame 12 moves vertically, the smoke hood 14 is driven to rise and fall synchronously through the smoke hood connector 13 fixedly connected to it.

[0040] The lower part of the fume hood 14 is hollow inside and has a trumpet-shaped structure. Based on the physical characteristics of the natural rise and diffusion of smoke and dust, the large trumpet opening faces the upper surface of the crucible. During the melting process of aluminum alloy, the smoke and dust continuously generated from the crucible floats upward due to thermal buoyancy and other effects. At this time, the large trumpet opening of the fume hood 14 acts like a "dust trap". The negative pressure suction generated by the negative pressure exhaust pipe 2 quickly draws the smoke and dust in a large area into the hood.

[0041] The inhaled fumes are then transported through the internal tubular structure at the top of the fume hood 14. Because the outer diameter of the upper part of the fume hood 14 is carefully designed to be smaller than the inner diameter of the fume extraction connecting pipe 3, when the lifting cylinder 9 drives the fume hood 14 to rise to the predetermined height, the two can connect, forming a tight, seamless connection, ensuring that fumes do not leak from the connection point. Subsequently, the fumes are further stably transported through the fume hood connector 13 and smoothly enter the negative pressure exhaust pipe 2 through the fume extraction connecting pipe 3. Finally, under negative pressure, they are discharged from the working area, achieving efficient collection and purification of fumes during the entire aluminum alloy melting process. This effectively protects the cleanliness of the workshop environment and the health of workers, while creating favorable conditions for high-quality aluminum alloy melting production.

[0042] In summary, the components of this utility model aluminum alloy melting crucible smoke removal device work closely together, and the position of the smoke removal hood is precisely controlled through rotation and lifting movements. Combined with the efficient smoke and dust collection and emission structure design, it perfectly achieves the organic unity of smoke removal function and ease of operation.

[0043] In summary, this easy-to-remove inner tube vulcanizing equipment, through the coordinated operation of its various components, ensures vulcanization quality and greatly improves production efficiency throughout the entire process from inner tube placement and vulcanization to removal, thus solving many problems existing in traditional inner tube vulcanizing equipment.

[0044] The embodiments are detailed, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A smoke removal device for an aluminum alloy melting crucible, comprising a negative pressure smoke exhaust pipe (2) installed on a structural beam (1) of a building, wherein a smoke removal connecting pipe (3) is connected to the negative pressure smoke exhaust pipe (2), characterized in that: It also includes a bottom column (4), a rotary cylinder (5), a rotary plate (6), an upper column (7), a tie rod mounting frame (8), a lifting cylinder (9), a first tie rod (10), a second tie rod (11), an end connecting frame (12), a fume hood connector (13), and a fume hood (14). The cylinder body of the rotary cylinder (5) is inherently connected to the upper end face of the bottom column (4), and its output shaft is connected to the lower end face of the rotary plate (6). The upper end face of the rotary plate (6) is inherently connected to the lower end face of the upper column (7). The tie rod mounting frame (8) is inherently set on the upper end face of the upper column (7). The first pull rod (10) has a connecting plate (15) on each of its two sides near the end of the lifting cylinder (9). The two connecting plates (15) are inherently connected to the end of the lifting cylinder (9) via a connecting shaft (16). The telescopic rod of the lifting cylinder (9) is connected to the connecting shaft (16) via a fisheye connector. The cylinder body of the lifting cylinder (9) is connected to the rotary plate (6) via a single-ear seat and a double-ear seat rotatably. One end of the first pull rod (10) is rotatably connected to the end connecting frame (12), and the side near the lifting cylinder (9) is rotatably connected to the pull rod mounting frame (8); One end of the second pull rod (11) is rotatably connected to the end connecting frame (12), and the other end is rotatably connected to the pull rod mounting frame (8); One end of the smoke hood connector (13) is fixedly connected to the end connecting frame (12), and the other end is sleeved on the smoke hood (14). The upper part of the smoke hood (14) has an internal tubular structure, and the lower part has an internal hollow structure with a trumpet-shaped shape.

2. The fume removal device for an aluminum alloy melting crucible according to claim 1, characterized in that: The large flared mouth of the smoke hood (14) is positioned facing the upper surface of the crucible.

3. The fume removal device for an aluminum alloy melting crucible according to claim 1, characterized in that: The outer diameter of the upper part of the smoke hood (14) is smaller than the inner diameter of the inner wall of the smoke removal connecting pipe (3).

4. The fume removal device for an aluminum alloy melting crucible according to claim 1, characterized in that: The smoke hood connector (13) includes a connecting part (13a) and a fixing part (13b). One end of the connecting part (13a) is fixedly connected to the end connecting frame (12), and the other end is fixedly connected to the connecting part (13a).

5. The fume removal device for an aluminum alloy melting crucible according to claim 4, characterized in that: The connecting part (13a) has a ring-shaped structure and is inherently connected to the outer wall of the upper part of the smoke hood (14).

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