A dust collecting device for the discharge port of a bin for electrolytic aluminum

Abstract

The application relates to the field of electrolytic aluminum, in particular to a dust collecting device for a discharge port of a bin for electrolytic aluminum, which comprises a dust collecting cover, a soft connection dust collecting set, a lifting mechanism, a driving mechanism and a control unit; the dust collecting cover is arranged above the discharge port of the bin; the dust collecting cover is provided with a dust collecting port; the upper end of the soft connection dust collecting set is in sealing connection with the dust collecting port; the lifting mechanism is arranged on the side, away from the dust collecting cover, of the soft connection dust collecting set; the lifting mechanism drives the soft connection dust collecting set to approach or move away from the discharge port of the bin; the driving mechanism is in transmission connection with the lifting mechanism and provides power for the lifting mechanism; the control unit is in electric connection with the driving mechanism and controls the start-stop and steering of the driving mechanism. The application has the effects of reducing dust raising during bagging and reducing the harm of dust to workers.

Description

Technical Field

[0001] This application relates to the field of electrolytic aluminum, and in particular to a dust collection device for the discharge port of an electrolytic aluminum silo. Background Technology

[0002] In the electrolytic aluminum production process, over 200 tons of electrolyte sheet fragments are generated daily. These materials are typically carried to the assembly line along with residual electrodes. After being processed by the electrolyte cleaning and crushing process, materials with a particle size of less than 20mm are temporarily stored in a silo and eventually transferred back to the electrolytic process for recycling. The stable operation of the silo is directly related to the continuity of the production rhythm; however, in actual production, the silo often faces the risk of overflowing due to fluctuations in operating conditions.

[0003] On the one hand, there may be a short-term imbalance between the supply and demand of materials in the assembly line and the silo. For example, if the supply rate exceeds the downstream consumption rate, the silo storage will continue to accumulate. On the other hand, when crushing high-precision aluminum or electrolyte materials separately, if the supporting material transport vehicles fail to connect and transfer them in time, the material accumulation rate in the silo will exceed the output capacity, eventually leading to a silo overflow. A silo overflow will directly cause production to stop and disrupt the overall process rhythm. To quickly restore production, the current common practice is to connect an extension pipe to the silo discharge port and use manual labor and forklifts to bag and transport the materials out of the silo.

[0004] The existing dust collection process in bagging operations has significant deficiencies. Due to the large distance between the dust collection port and the receiving pipe of the dust collection device, the negative pressure generated by the dust collection system cannot effectively cover the material falling area. As a result, the dust generated during the falling of the broken electrolyte sheet blocks and the bagging process cannot be extracted in time, leading to widespread dust pollution on site. Long-term exposure to high-concentration dust not only pollutes the workplace environment but also poses a threat to the respiratory health of employees. Utility Model Content

[0005] In order to reduce dust during the bagging process and reduce the harm of dust to workers, this application provides a dust collection device for the discharge port of an electrolytic aluminum silo.

[0006] This application provides a dust collection device for the discharge port of an electrolytic aluminum silo, which adopts the following technical solution: A dust collection device for the discharge port of an electrolytic aluminum silo includes: A dust collection hood is installed above the material discharge port of the hopper, and the dust collection hood has a dust collection port; A flexible dust collection kit, the upper end of which is sealed to the dust collection port; A lifting mechanism is provided on the side of the flexible connection dust collection kit away from the dust collection hood. The lifting mechanism drives the flexible connection dust collection kit to approach or move away from the material discharge port of the hopper. A drive mechanism is connected to the lifting mechanism in a transmission manner to provide power to the lifting mechanism; The control unit is electrically connected to the drive mechanism and controls the start, stop, and steering of the drive mechanism.

[0007] By adopting the above technical solution, the dust collection hood, placed above the material discharge port of the hopper, can initially intercept falling dust and reduce its spread to the surrounding area. The upper end of the flexible dust collection kit is sealed to the dust collection port, ensuring the airtightness of the dust collection channel. The flexible material allows it to flexibly extend and retract with the movement of the lifting mechanism, dynamically adjusting the coverage area to meet the different height receiving needs when the transport vehicle is unloading or when manually bagging materials. This avoids the problems of insufficient negative pressure and dust overflow caused by distance deviation in traditional fixed-height dust collection devices. The lifting mechanism, together with the drive mechanism, provides power to achieve precise lifting and lowering of the flexible dust collection kit, ensuring that its bottom is always close to the receiving position and maximizing the use of dust collection negative pressure. The control unit is electrically connected to the drive mechanism, supporting automatic start-stop and steering control. It is easy to operate and can quickly adjust the dust collection position according to the working conditions, reducing human intervention errors.

[0008] Preferably, the lifting mechanism includes a traction component and a winding component, one end of the traction component is connected to the flexible dust collection kit, and the other end of the traction component is wound around the winding component; The driving mechanism is rotatably connected to the winding assembly. The driving mechanism drives the winding assembly to rotate forward or backward, and the winding assembly controls the winding and unwinding of the winding assembly.

[0009] By adopting the above technical solution, the winding component, as the power output terminal, is driven to rotate forward and backward by the drive mechanism. It can directly control the winding and unwinding length of the traction component, thereby precisely adjusting the lifting height of the flexible dust collection kit. When it is necessary to adapt to the unloading of the transport vehicle, the winding component releases the traction component to lower the kit to the vicinity of the receiving port of the vehicle. When switching to manual bagging, the winding component winds up the traction component to move the kit up to the bagging position of the forklift. No manual intervention or adjustment is required throughout the process, avoiding the problem of negative pressure loss and dust overflow caused by distance deviation of the fixed height dust collection device. The connection between the traction component and the flexible dust collection kit ensures that the kit will not shift or fall off during the lifting process. Combined with the uniform winding and unwinding characteristics of the winding component, the bottom of the kit can always be close to the receiving position, maximizing the negative pressure efficiency of the dust collection system.

[0010] Preferably, the traction component is a traction rope; The winding assembly is a winch.

[0011] By adopting the above technical solution, the winch can accurately respond to the forward and reverse commands of the drive mechanism. The height of the soft connection dust collection kit can be adjusted by winding and unwinding the traction rope. When the material is unloaded from a high position on the transport vehicle, the winch releases the traction rope to lower the kit to above the material receiving port of the truck. When switching to manual bagging, the winch winds up the traction rope to move the kit to the bagging position of the forklift. No manual intervention is required to adjust the height throughout the process. Moreover, the winch's self-locking feature can stably maintain the position of the kit and prevent it from sliding or shifting due to gravity or material impact.

[0012] Preferably, when the winch rotates forward or reverse, the flexible connection dust collection kit falls or rises.

[0013] By adopting the above technical solution, when the winch rotates forward, the traction rope is released, and the flexible dust collection kit falls naturally under its own weight and the pulling force of the falling material, quickly approaching the material receiving port of the transport vehicle or the bagging position of the forklift; conversely, when the winch rotates backward, the traction rope is wound up, and the kit is lifted with the traction rope, flexibly avoiding the unloading channel or adjusting to other working heights.

[0014] Preferably, it also includes a distance sensor, which is installed on the bottom of the flexible connection dust collection kit. The distance sensor detects the distance between the lower end of the flexible connection dust collection kit and the target object, and the distance sensor is signal-connected to the control unit.

[0015] By adopting the above technical solution, the distance sensor detects the distance between the bottom of the flexible connector kit and the target object in real time. After feeding the data back to the control unit, the control unit can accurately adjust the rotation direction and extension / retraction length of the winch, driving the flexible connector kit to dynamically maintain the optimal coverage height. When the transport vehicle compartment gradually rises due to material loading, the distance sensor detects an increase in distance, and the control unit immediately instructs the winch to release the traction rope to lower the kit, always maintaining a close contact of 2-5cm with the material receiving port of the compartment. When manually bagging, if the height of the forklift pallet decreases, the sensor can also provide timely feedback, and the control unit drives the winch to rewind the traction rope to lift the kit, avoiding negative pressure loss due to height deviation. This closed-loop control mechanism completely solves the drawback of traditional devices relying on manual experience to adjust the height. It not only reduces the labor intensity of operators, but also maximizes the negative pressure efficiency of the dust collection system through distance matching, effectively suppressing dust from escaping from the gap between the bottom of the kit and the receiving position, significantly improving the working environment. The real-time monitoring function of the distance sensor can also prevent the kit from excessively descending and colliding with materials or excessively rising and leaving the effective dust collection range, protecting the flexible connector kit from mechanical damage and extending the service life of the device.

[0016] Preferably, the control unit receives the signal from the ranging sensor and controls the drive mechanism based on a preset distance value, thereby controlling the lifting height of the lower end of the flexible dust collection kit.

[0017] By adopting the above technical solution, the distance sensor provides real-time feedback on the distance between the bottom of the flexible connector kit and the target object. The control unit compares this signal with the preset optimal dust collection distance threshold. If the detected distance deviates from the preset value, the motor is immediately driven to adjust the winch to raise and lower the traction rope, so that the kit is accurately raised and lowered to the preset height. When the transport vehicle is loaded, the height of the truck bed increases the distance, and the control unit will instruct the winch to release the traction rope to lower the kit. When the forklift pallet is lowered, the traction rope is wound up to raise the kit. No manual intervention is required throughout the process. This closed-loop control mechanism not only ensures that the flexible connector kit always maintains the optimal negative pressure coverage distance with the receiving position, maximizing the suppression of dust overflow, but also avoids the problem of height deviation caused by manual adjustment, significantly improving the stability of the dust collection effect.

[0018] Preferably, the flexible connection dust collection kit is made of flexible fireproof cloth or high-temperature resistant plastic, and its lower end is provided with a rigid collar for maintaining the shape of the opening.

[0019] By adopting the above technical solutions, the flexible connection dust collection kit uses flexible fireproof cloth or high-temperature resistant plastic, which can resist the high-temperature radiation, sparks, and corrosive dust erosion in electrolytic aluminum production, avoiding the safety hazards of easy aging and flammability of the cloth. With its flexible characteristics, it can flexibly extend and retract with the lifting mechanism, closely conforming to the dynamic height changes of the material receiving port of the transport vehicle or the bagging area of ​​the forklift, reducing the gap with the receiving position and suppressing dust overflow. The rigid collar ensures the unobstructed dust collection channel by maintaining the shape of the opening, preventing the flexible connection kit from collapsing due to its own weight or wind force, thus preventing the negative pressure loss. This allows the suction of the dust collection system to act efficiently on the dust diffusion area, improving the dust capture rate. On the other hand, as the connecting carrier of the traction rope, its rigid structure can withstand the pulling force during the lifting process, preventing the lower end of the kit from deforming or falling off due to force, while protecting the lower end of the flexible connection kit from material damage or frequent friction, extending the replacement cycle of the flexible connection kit.

[0020] Preferably, the drive mechanism is a motor with an electromagnetic brake function.

[0021] By adopting the above technical solution, the electromagnetic brake function can use electromagnetic force to drive the brake shoes to press tightly against the motor rotor shaft when the motor is powered off or stopped, forcibly locking the motor output end. This prevents the winch from rotating unexpectedly due to factors such as motor inertia, material falling tension, or workshop vibration, thereby preventing the flexible connection dust collection kit from sliding down uncontrollably and hitting the discharge port or accumulated materials, reducing the risk of equipment collision damage. At the same time, the brake locking can accurately maintain the height position of the flexible connection kit. When the control unit commands the motor to stop, the kit can stably maintain the preset optimal dust collection height, avoiding negative pressure loss and dust overflow due to position deviation, ensuring the continuity of dust collection effect.

[0022] Preferably, the method further includes a limiting component that restricts the shaking of the dust collection hood or flexible connection dust collection kit. The limiting component includes a fixed part and a movable part, and the movable part is connected to the dust collection hood or flexible connection dust collection kit.

[0023] By adopting the above technical solution, the fixed part provides a stable anchor point for the limiting component, while the movable part moves synchronously with the main structure. However, its displacement range is limited by the geometric constraints of the fixed part. When the dust collection hood sways laterally or longitudinally due to the impact of material feeding or motor vibration, the movable part will touch the limiting boundary of the fixed part and prevent it from shifting further through mechanical blocking, ensuring that the dust collection hood always remains coaxially aligned with the feeding port and avoiding dust leakage caused by misalignment. For the flexible connection kit, the limiting component can suppress its swaying caused by its own weight or uneven winding and unwinding of the traction rope, so that the bottom opening of the kit is always aligned with the receiving position and maintains a stable negative pressure coverage distance.

[0024] Preferably, the movable part of the limiting component includes a hinged limiting rod and a connecting rod, and the fixed part is provided with a slot for the limiting rod to be engaged. When the connecting rod is pushed or pulled, the limiting rod engages or disengages from the slot, and the dust collection hood or flexible dust collection kit locks or releases.

[0025] By adopting the above technical solution, when it is necessary to fix the position of the dust collection hood or flexible connection dust collection kit, pushing or pulling the connecting rod will cause the limiting rod to engage with the slot of the fixed part. The rigidly fitted limiting rod and the slot completely restrict the shaking of the dust collection hood or flexible connection dust collection kit. Vibration in the electrolytic aluminum workshop, material falling impact or airflow disturbance cannot cause it to shift, ensuring that the dust collection hood is always coaxially aligned with the discharge port and the bottom of the flexible connection kit is always aligned with the receiving position, maximizing the effective coverage of the dust collection negative pressure and suppressing dust overflow. When it is necessary to switch the working scene, the connecting rod can be reversed to make the limiting rod disengage from the slot, releasing the dust collection hood or flexible connection dust collection kit. The height can be adjusted in conjunction with the drive mechanism. No additional tools are required throughout the process, and the operation is simple and quick.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The dust collection hood, positioned above the material discharge port of the hopper, can initially intercept falling dust and reduce its spread to the surrounding area. The upper end of the flexible dust collection kit is sealed to the dust collection port, ensuring the airtightness of the dust collection channel. Its flexible material allows it to extend and retract flexibly with the lifting mechanism, dynamically adjusting the coverage area to meet the different receiving heights required when unloading from transport vehicles or manually bagging materials. This avoids the problems of insufficient negative pressure and dust overflow caused by distance deviations in traditional fixed-height dust collection devices. The lifting mechanism, in conjunction with the drive mechanism, provides power to achieve precise lifting and lowering of the flexible dust collection kit, ensuring its bottom is always close to the receiving position and maximizing the utilization of the dust collection negative pressure. The control unit, electrically connected to the drive mechanism, supports automated start / stop and steering control, making operation simple and allowing for rapid adjustment of the dust collection position according to working conditions, reducing human intervention errors.

[0027] 2. The winding assembly, as the power output terminal, is driven to rotate forward and backward by the drive mechanism. It can directly control the winding and unwinding length of the traction assembly, thereby precisely adjusting the lifting height of the flexible dust collection kit. When it is necessary to adapt to the unloading of materials from the transport vehicle, the winding assembly releases the traction assembly to lower the kit to the vicinity of the receiving port of the vehicle. When switching to manual bagging, the winding assembly winds up the traction assembly to move the kit up to the bagging position of the forklift. No manual intervention is required throughout the process, avoiding the problem of negative pressure loss and dust overflow caused by distance deviation in the fixed-height dust collection device. The connection between the traction assembly and the flexible dust collection kit ensures that the kit will not shift or fall off during the lifting process. Combined with the uniform winding and unwinding characteristics of the winding assembly, the bottom of the kit can always be close to the receiving position, maximizing the negative pressure efficiency of the dust collection system. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the dust collection device at the discharge port of the electrolytic aluminum silo in this embodiment of the application; Figure 2 This is a side view of the dust collection device at the discharge port of the electrolytic aluminum silo. Figure 3 This is a bottom view schematic diagram showing the dust collection device at the discharge port of the electrolytic aluminum silo; Figure 4 This is a partial structural diagram illustrating the flexible connection dust collection kit; Figure 5 It is a structural diagram showing the lifting mechanism and the drive mechanism.

[0029] Explanation of reference numerals in the attached drawings: 1. Dust collection hood; 11. Dust collection port; 2. Flexible connection dust collection kit; 3. Lifting mechanism; 31. Traction assembly; 32. Winding assembly; 33. Distance sensor; 4. Drive mechanism; 5. Limiting assembly; 51. Fixed part; 52. Moving part; 521. Limiting rod; 522. Connecting rod. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0031] This application discloses a dust collection device for the discharge port of an electrolytic aluminum silo. The dust collection device includes a dust collection hood 1, a flexible dust collection kit 2 sealed to the dust collection hood 1, a lifting mechanism 3 connected to the flexible dust collection kit 2, a drive mechanism 4 for driving the lifting mechanism 3, and a control unit for controlling the operation of the lifting mechanism 3 and the drive mechanism 4. The dust collection hood 1 is positioned above the discharge port of the silo, and has a dust collection opening 11. The upper end of the flexible dust collection kit 2 is sealed to the dust collection opening 11. The lifting mechanism 3 is positioned on the side of the flexible dust collection kit 2 away from the dust collection hood 1. The lifting mechanism 3 drives the flexible dust collection kit 2 to approach or move away from the discharge port of the silo. The drive mechanism 4 is connected to the lifting mechanism 3 via a transmission connection, providing power to the lifting mechanism 3. The control unit is electrically connected to the drive mechanism 4, controlling the start, stop, and direction of the drive mechanism 4.

[0032] The lifting mechanism 3 includes a traction component 31 and a winding component 32. One end of the traction component 31 is connected to the flexible dust collection kit 2, and the other end of the traction component 31 is wound around the winding component 32. The drive mechanism 4 is rotatably connected to the winding component 32. The drive mechanism 4 drives the winding component 32 to rotate forward or backward, and the winding component 32 controls the winding and unwinding of the winding component 32. The winding assembly 32, as the power output terminal, is driven to rotate forward and backward by the drive mechanism 4. It can directly control the winding and unwinding length of the traction assembly 31, thereby precisely adjusting the lifting height of the soft connection dust collection kit 2. When it is necessary to adapt to the unloading of materials from the transport vehicle, the winding assembly 32 releases the traction assembly 31 to lower the kit to the vicinity of the receiving port of the vehicle. When switching to manual bagging, the winding assembly 32 winds up the traction assembly 31 to move the kit up to the bagging position of the forklift. No manual intervention is required throughout the process, avoiding the problem of negative pressure loss and dust overflow caused by distance deviation of the fixed height dust collection device. The connection between the traction assembly 31 and the soft connection dust collection kit 2 ensures that the kit will not shift or fall off during the lifting process. Combined with the uniform winding and unwinding characteristics of the winding assembly 32, the bottom of the kit can always be close to the receiving position, maximizing the negative pressure efficiency of the dust collection system.

[0033] In an optional embodiment, the traction component 31 is a traction rope, and the winding component 32 is a winch. The flexible connection dust collection kit 2 is fixed to the edge of the dust collection port 11 of the dust collection hood 1 by a pressure plate. The flexible connection port is designed with a collar to connect the traction rope, which extends along the dust collection hood 1 to the top of the unloading platform and connects to the winch. The winch can accurately respond to the forward and reverse rotation commands of the drive mechanism 4. By winding and unwinding the traction rope, the height of the flexible connection dust collection kit 2 can be adjusted. When adapting to high-level unloading of materials from a transport vehicle, the winch releases the traction rope to lower the kit to above the receiving port of the vehicle. When switching to manual bagging, the winch winds up the traction rope to move the kit up to the bagging position of the forklift. No manual intervention is required to adjust the height throughout the process, and the self-locking characteristic of the winch can stably maintain the position of the kit and prevent slippage or displacement caused by gravity or material impact.

[0034] In an optional embodiment, the flexible dust collection kit 2 falls or rises when the winch rotates forward or reverse. When the winch rotates forward, the traction rope is released, and the flexible dust collection kit 2 falls naturally under its own weight and the pulling force of the falling material, quickly approaching the material receiving port of the transport vehicle or the bagging position of the forklift; conversely, when the winch rotates reverse, the traction rope is wound up, and the kit is lifted with the traction rope, flexibly avoiding the unloading channel or adjusting to other working heights.

[0035] In an optional embodiment, the lifting mechanism 3 further includes a distance sensor 33, which is installed on the bottom of the flexible connection dust collection kit. The distance sensor 33 detects the distance between the lower end of the flexible connection dust collection kit 2 and the target object, and is signal-connected to the control unit. The distance sensor 33 detects the distance between the bottom of the flexible connection kit and the target object in real time, and after feeding the data back to the control unit, the control unit can precisely adjust the rotation direction and extension / retraction length of the winch, driving the flexible connection kit to dynamically maintain the optimal coverage height.

[0036] As the transport vehicle's cargo compartment gradually rises due to material loading, the distance sensor 33 detects the increased distance. The control unit then instructs the winch to release the traction rope, causing the kit to descend and maintain a close contact of 2-5cm with the cargo compartment's receiving port. During manual bagging, if the forklift pallet height decreases, the sensor also provides timely feedback, and the control unit drives the winch to reel in the traction rope, raising the kit and preventing negative pressure loss due to height discrepancies. This closed-loop control mechanism completely solves the drawback of traditional devices relying on manual experience to adjust height. It not only reduces the operator's workload but also maximizes the negative pressure efficiency of the dust collection system through distance matching, effectively suppressing dust escape from the gap between the kit's bottom and the receiving position, significantly improving the working environment. The real-time monitoring function of the distance sensor 33 also prevents the kit from excessively descending and colliding with materials or excessively rising and leaving the effective dust collection range, protecting the flexible connection kit from mechanical damage and extending the device's service life.

[0037] In an optional embodiment, the control unit receives a signal from the distance sensor 33 and controls the drive mechanism 4 based on a preset distance value, thereby controlling the lifting height of the lower end of the flexible connection dust collection kit 2. After the distance sensor 33 provides real-time feedback on the distance between the bottom of the flexible connection kit and the target object, the control unit compares the signal with a preset optimal dust collection distance threshold. If the detected distance deviates from the preset value, the control unit immediately drives the motor to adjust the winch to raise and lower the traction rope, so that the kit is accurately raised and lowered to the preset height. When the transport vehicle is loaded, the height of the truck bed increases the distance, and the control unit will instruct the winch to release the traction rope to lower the kit. When the forklift pallet is lowered, the traction rope is wound up to lift the kit. No manual intervention is required throughout the process. This closed-loop control mechanism not only ensures that the flexible connection kit always maintains the optimal negative pressure coverage distance with the receiving position, maximizing the suppression of dust overflow, but also avoids the problem of height deviation caused by manual adjustment, significantly improving the stability of the dust collection effect.

[0038] In an optional embodiment, the flexible dust collection kit 2 is made of flexible fireproof cloth or high-temperature resistant plastic, with a rigid collar at its lower end to maintain the shape of the opening. The flexible fireproof cloth or high-temperature resistant plastic used in the flexible dust collection kit 2 can resist the high-temperature radiation, sparks, and corrosive dust erosion during electrolytic aluminum production, avoiding the safety hazards of easy aging and flammability of the cloth. Its flexibility allows it to extend and retract flexibly with the lifting mechanism 3, closely conforming to the dynamic height changes of the transport vehicle's receiving port or the forklift's bagging area, reducing gaps with the receiving position and suppressing dust spillage. The rigid collar, on the one hand, maintains the shape of the opening to ensure the unobstructed flow of the dust collection channel, preventing the flexible kit from collapsing due to its own weight or wind force, thus ensuring that the suction of the dust collection system can efficiently act on the dust diffusion area and improve the dust capture rate. On the other hand, as the connecting carrier of the traction rope, its rigid structure can withstand the pulling force during the lifting process, preventing the lower end of the kit from deforming or falling off due to force, while also protecting the lower end of the flexible kit from material impact or frequent friction, extending the replacement cycle of the flexible kit.

[0039] In a preferred embodiment, the drive mechanism 4 is a motor with an electromagnetic brake function. The electromagnetic brake function, when the motor is powered off or stopped, uses electromagnetic force to drive the brake shoes to press firmly against the motor rotor shaft, forcibly locking the motor output end. This prevents the winch from rotating unexpectedly due to motor inertia, material falling tension, or workshop vibration, thus preventing the flexible connection dust collection kit 2 from sliding uncontrollably and impacting the discharge port or accumulated materials, reducing the risk of equipment collision damage. Simultaneously, the brake locking accurately maintains the height position of the flexible connection kit. When the control unit commands the motor to stop, the kit can stably maintain the preset optimal dust collection height, preventing negative pressure loss and dust overflow due to positional deviation, ensuring the continuity of the dust collection effect. The motor's forward and reverse rotation enables the flexible connection dust collection kit 2 to fall and rise. A distance sensor is provided at the bottom of the flexible connection dust collection kit 2 to control the falling height of the dust collection kit.

[0040] In an optional embodiment, the dust collection device at the discharge port of the electrolytic aluminum hopper further includes a limiting component 5. The limiting component 5 restricts the shaking of the dust collection hood 1 or the flexible connection dust collection kit 2. The limiting component 5 includes a fixed part 51 and a movable part 52. The movable part 52 is connected to the dust collection hood 1 or the flexible connection dust collection kit 2. The fixed part 51 provides a stable anchor point for the limiting component 5, while the movable part 52 moves synchronously with the main structure, but its displacement range is limited by the geometric constraints of the fixed part 51. When the dust collection hood 1 shakes laterally or longitudinally due to the impact of the discharge or the vibration of the motor, the movable part 52 will reach the limiting boundary of the fixed part 51, and prevent it from shifting further through mechanical blocking, ensuring that the dust collection hood 1 always remains coaxially aligned with the discharge port, avoiding dust leakage caused by misalignment. For the flexible connection kit, the limiting component 5 can suppress its swing caused by its own weight or uneven release of the traction rope, so that the bottom opening of the kit is always aligned with the receiving position, maintaining a stable negative pressure coverage distance.

[0041] In an optional embodiment, the movable part 52 of the limiting component 5 includes a hinged limiting rod 521 and a connecting rod 522, and the fixed part 51 is provided with a slot for the limiting rod 521 to be engaged. When the connecting rod 522 is pushed or pulled, the limiting rod 521 engages or disengages from the slot, and the dust collection hood 1 or the flexible dust collection kit 2 is locked or released. When it is necessary to fix the position of the dust collection hood 1 or the flexible connection dust collection kit 2, push or pull the connecting rod 522 to make the limiting rod 521 engage with the slot of the fixing part 51. The rigidly fitted limiting rod 521 and the slot completely restrict the shaking of the dust collection hood 1 or the flexible connection dust collection kit 2. Vibration in the electrolytic aluminum workshop, material falling impact or airflow disturbance cannot cause it to shift, ensuring that the dust collection hood 1 is always coaxially aligned with the discharge port and the bottom of the flexible connection kit is always aligned with the receiving position, maximizing the effective coverage of the dust collection negative pressure and suppressing dust overflow. When it is necessary to switch the working scene, reverse the operation of the connecting rod 522 to make the limiting rod 521 disengage from the slot, release the dust collection hood 1 or the flexible connection dust collection kit 2, and adjust the height with the drive mechanism 4. No additional tools are required throughout the process, and the operation is simple and quick.

[0042] In a preferred embodiment, the limiting component 5 includes a spring, a slider, and a connecting rod 522. A groove is provided within the fixed plate, and a limiting rod 521 is hinged to the middle of the groove. Springs are connected to both ends of the groove. Sliding sliders are slidably disposed within the grooves at both ends of the limiting rod 521, and the sliders are connected to the springs. Two connecting rods 522 are hinged to the limiting rod 521, and each connecting rod 522 is connected to a slider. The ends of the two connecting rods 522 are hinged to both sides of the dust collection hood 1. When the dust collection hood 1 needs to be fixed in one position, it is locked in the designated position by a motor brake to prevent it from shaking or shifting during operation, ensuring stable and reliable dust collection.

[0043] The implementation principle of this application embodiment is as follows: The dust collection hood 1 is set above the material discharge port of the hopper to initially intercept falling dust and reduce its spread to the surrounding area; the upper end of the flexible connection dust collection kit 2 is sealed to the dust collection port 11, which not only ensures the airtightness of the dust collection channel, but also allows itself to flexibly extend and retract with the movement of the lifting mechanism 3 through the flexible material, dynamically adjusting the coverage range to adapt to the material receiving needs of different heights when the transport vehicle discharges or when manually bagging, avoiding the problem of insufficient negative pressure and dust overflow caused by distance deviation of traditional fixed height dust collection devices; the lifting mechanism 3, together with the drive mechanism 4, provides power to realize the precise lifting and lowering of the flexible connection dust collection kit 2, ensuring that its bottom is always close to the material receiving position, maximizing the use of dust collection negative pressure; the control unit is electrically connected to the drive mechanism 4, supporting automatic start-stop and steering control, which is easy to operate and can quickly adjust the dust collection position according to the working conditions, reducing human intervention error.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dust collection device for the discharge port of an electrolytic aluminum silo, characterized in that, include: Dust collection hood (1), the dust collection hood (1) is set above the material discharge port of the silo, and the dust collection hood (1) has a dust collection port (11); A flexible dust collection kit (2) is provided, the upper end of which is sealed to the dust collection port (11); Lifting mechanism (3), the lifting mechanism (3) is located on the side of the flexible connection dust collection kit (2) away from the dust collection hood (1), the lifting mechanism (3) drives the flexible connection dust collection kit (2) to approach or move away from the hopper discharge port; The drive mechanism (4) is connected to the lifting mechanism (3) in a transmission manner, and provides power to the lifting mechanism (3); The control unit is electrically connected to the drive mechanism (4) and controls the start, stop and steering of the drive mechanism (4).

2. The dust collection device at the discharge port of the electrolytic aluminum silo according to claim 1, characterized in that, The lifting mechanism (3) includes a traction component (31) and a winding component (32). One end of the traction component (31) is connected to the flexible dust collection kit (2), and the other end of the traction component (31) is wound around the winding component (32). The driving mechanism (4) is rotatably connected to the winding assembly (32). The driving mechanism (4) drives the winding assembly (32) to rotate forward or backward, and the winding assembly (32) controls the winding and unwinding of the winding assembly (32).

3. The dust collection device at the discharge port of the electrolytic aluminum silo according to claim 2, characterized in that, The traction component (31) is a traction rope; The winding assembly (32) is a winch.

4. The dust collection device at the discharge port of the electrolytic aluminum silo according to claim 3, characterized in that, When the winch rotates forward or backward, the soft connection dust collection kit (2) falls or rises.

5. The dust collection device at the discharge port of the electrolytic aluminum silo according to claim 2, characterized in that, It also includes a distance sensor (33), which is installed on the bottom of the flexible connection dust collection kit. The distance sensor (33) detects the distance between the lower end of the flexible connection dust collection kit (2) and the target object. The distance sensor (33) is signal-connected to the control unit.

6. The dust collection device at the discharge port of the electrolytic aluminum silo according to claim 5, characterized in that, The control unit receives the signal from the ranging sensor (33) and controls the drive mechanism (4) based on the preset distance value, thereby controlling the lifting height of the lower end of the soft connection dust collection kit (2).

7. The dust collection device at the discharge port of the electrolytic aluminum silo according to claim 6, characterized in that, The flexible connection dust collection kit (2) is made of flexible fireproof cloth or high-temperature resistant plastic, and its lower end is provided with a rigid collar for maintaining the shape of the opening.

8. The dust collection device at the discharge port of the electrolytic aluminum silo according to claim 1, characterized in that, The drive mechanism (4) is a motor with an electromagnetic brake function.

9. The dust collection device at the discharge port of the electrolytic aluminum silo according to claim 1, characterized in that, It also includes a limiting component (5) that restricts the shaking of the dust collection hood (1) or the flexible connection dust collection kit (2). The limiting component (5) includes a fixed part (51) and a movable part (52), which is connected to the dust collection hood (1) or the flexible connection dust collection kit (2).

10. The dust collection device at the discharge port of the electrolytic aluminum silo according to claim 9, characterized in that, The movable part (52) of the limiting component (5) includes a hinged limiting rod (521) and a connecting rod (522), and the fixed part (51) is provided with a slot for the limiting rod (521) to be inserted. When the connecting rod (522) is pushed or pulled, the limiting rod (521) engages or disengages from the slot, and the dust collection hood (1) or the flexible dust collection kit (2) is locked or released.

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