High pressure roll buffer bin dust collection device

Abstract

The application discloses a high-pressure roller buffer bin dust collection device and belongs to the technical field of buffer bin dust treatment. The high-pressure roller buffer bin dust collection device comprises an air draft assembly and a dust collection cover, and further comprises: a monitoring module for detecting the stacking height of materials in each bin in real time; an identification part for identifying a bin to be unloaded; an AI algorithm module is arranged in a PLC system, historical operation data of each bin is built in the AI algorithm module, the historical operation data of each bin is the historical operation data of the bin under the condition that different materials are stacked to different heights and the reversible belt is under different unloading speeds, and the PLC system controls the power of the air draft assembly according to the predicted real-time concentration of the flying dust, so that the power of the air draft assembly is proportional to the predicted real-time concentration of the flying dust. Compared with the traditional mode of directly detecting the concentration of flying dust and then regulating, the high-pressure roller buffer bin dust collection device effectively avoids the regulation lag problem and improves the timeliness of dust collection operation power regulation.

Description

Technical Field

[0001] This invention relates to the field of dust control technology for buffer bins, specifically to a dust collection device for a high-pressure roller buffer bin. Background Technology

[0002] In heavy industries such as mining, metallurgy, and building materials, high-pressure roller mills, with their advantages of high efficiency, energy saving, and uniform particle size, have become core equipment in the material crushing process and are widely used in key processes such as ore crushing and clinker grinding. The high-pressure roller buffer chamber, as its core supporting transfer facility, is a crucial hub connecting material conveying and roller milling. It plays a key role in temporary material storage, uniform and quantitative feeding, and stabilizing the production rhythm, directly affecting the operating efficiency of the high-pressure roller mill and the continuity of the entire production line.

[0003] In actual production operations, the material transfer process follows a fixed pattern: the main conveyor belt first transports the material to the reversible conveyor belt, and then the reversible conveyor belt distributes the material to various buffer bins for unloading. This transfer process is affected by multiple factors, with dust pollution being particularly prominent. On the one hand, the material has a significant drop, and during the descent, it collides and is squeezed, easily breaking and generating fine dust that spreads outward. On the other hand, the airflow disturbances generated by the equipment operation and the induced airflow formed by the material unloading will cause dust to drift in all directions. The combination of these two factors is the main cause of dust pollution around the buffer bins.

[0004] The dust problem is particularly serious in the core operation of unloading materials from the reversible conveyor belt into the buffer bin. Large amounts of dust permeate the work site, not only polluting the workshop environment, accelerating the wear and tear of equipment parts, and shortening equipment lifespan, but also seriously endangering the health of frontline operators, causing respiratory and other occupational health problems. At the same time, the drifting dust causes material loss, increases production costs, disrupts the clean and orderly production process in the workshop, and hinders the progress of standardized and regulated production.

[0005] Most conventional high-pressure roller buffer chamber dust collection devices on the market currently adopt a passive dust collection mode. They rely on dust collection hoods and exhaust components to collect dust. Although they are equipped with dust concentration detection components to adjust the dust extraction power according to the dust concentration, they can only adjust the exhaust power manually or automatically after detecting that the dust concentration on site exceeds the standard. Therefore, their power adjustment has a certain lag, and the timeliness of dust collection efficiency control is somewhat lacking, making it difficult to meet the green, efficient, and precise dust collection needs of modern industry. Summary of the Invention

[0006] The purpose of this invention is to overcome the problems in the prior art and provide a high-pressure roller buffer chamber dust collection device. Compared with the traditional method of directly detecting dust concentration and then adjusting it, it effectively avoids the problem of control lag and improves the timeliness of dust collection operation power control.

[0007] This invention provides a dust collection device for a high-pressure roller buffer bin, comprising an exhaust assembly and a dust collection hood, wherein the dust collection hood is connected to the exhaust assembly and covers a reversible belt; the power of the exhaust assembly is adjustable; and further comprising: An identification unit, located on the dust collection hood, is used to identify the hopper to be unloaded. A monitoring module is installed in each silo, and the monitoring module is used to detect the stacking height of materials in each silo in real time; The PLC system is electrically connected to the reversible conveyor belt and the exhaust system. The PLC system has an AI algorithm module, which contains historical operation data for each silo. This historical operation data shows the real-time changes in dust concentration generated by each silo under different material accumulation heights and different unloading speeds of the reversible conveyor belt. Based on the silo to be unloaded, the material accumulation height of the silo, and the unloading speed of the reversible conveyor belt, combined with the historical operation data of the silo, the AI ​​algorithm module predicts the real-time dust concentration during the unloading process of the reversible conveyor belt. The PLC system controls the power of the exhaust system according to the predicted real-time dust concentration, so that the power of the exhaust system is proportional to the predicted real-time dust concentration, thereby controlling the dust concentration in the unloading area within a preset acceptable range.

[0008] Preferably, the identification unit includes a laser rangefinder (9), which is electrically connected to the PLC system. The laser rangefinder is mounted on the dust collection hood and is used to detect the real-time position of the dust collection hood relative to the feed inlet of each hopper. The AI ​​algorithm module determines the direction of movement of the reversible belt and the hopper to be unloaded based on the real-time position of the dust collection hood relative to the feed inlet of each hopper.

[0009] Preferably, the laser rangefinder is fixed to the outer wall of the dust collection hood by a bracket, and the laser rangefinder is pointed along the width direction of the reversible belt.

[0010] Preferably, each hopper is provided with multiple exhaust vents, which are distributed throughout the hopper, and the exhaust assembly is connected to the multiple exhaust vents.

[0011] Preferably, the exhaust assembly includes a dust extraction duct, an electrically controlled air valve, and an exhaust fan. The exhaust fan is connected to the dust extraction duct via the electrically controlled air valve. The dust extraction duct is connected to a dust collection hood and multiple exhaust ports. Both the electrically controlled air valve and the exhaust fan are electrically connected to the PLC system. The PLC system controls the opening degree of the electrically controlled air valve and the start and stop of the exhaust fan based on the predicted real-time dust concentration.

[0012] Preferably, the system also includes a dust concentration monitoring module, which comprises multiple dust concentration sensors. These sensors are respectively located inside the dust collection hood, at the feed inlet of the hopper, and at the outlet of the dust extraction pipe. Each dust concentration sensor is used to detect the real-time dust concentration value at its location. All the multiple dust concentration sensors are electrically connected to the PLC system, which is electrically connected to an audible and visual alarm and a timing module. The PLC system has a preset concentration threshold. When the real-time dust concentration value detected by any dust concentration sensor is higher than the preset concentration threshold and exceeds a set time, the PLC system controls the audible and visual alarm to sound an alarm.

[0013] Preferably, a sliding air duct is provided between the dust collection hood and the dust extraction pipe. The sliding air duct is arranged parallel to the reversible belt and is connected to the dust extraction pipe. A ventilation groove along its length is provided on one side of the sliding air duct. A vacuuming trolley is slidably connected to the sliding air duct. An exhaust pipe is provided on the vacuuming trolley. The ventilation groove is connected to the exhaust pipe of the vacuuming trolley. The dust collection hood is fixedly connected to the vacuuming trolley and is connected to the exhaust pipe. A rubber sealing strip is provided on the ventilation groove to seal the gap between the ventilation groove and the exhaust pipe.

[0014] Preferably, the vacuum trolley is equipped with multiple rollers, all of which are arranged along the width of the ventilation groove. Two of the rollers are located on both sides of the exhaust pipe, and the rollers on both sides abut against the portions of the rubber sealing strip located on both sides of the exhaust pipe. Under the squeezing action of the rollers on both sides, the portions of the ventilation groove located on both sides of the exhaust pipe are sealed by the rubber sealing strip. The remaining rollers are located on the outer wall of the exhaust pipe, and the portion of the rubber sealing strip located in the middle of the exhaust pipe abuts against the rollers on the outer wall of the exhaust pipe, so that the portion of the ventilation groove located in the middle of the exhaust pipe is connected to the exhaust pipe.

[0015] Preferably, the end of the reversible belt is provided with an elastic sealing device, which is connected to a pneumatic control circuit. The pneumatic control circuit is electrically connected to a PLC system. When the PLC system controls the pneumatic control circuit to inflate the elastic sealing device, the elastic sealing device can fit against the feed inlet of the hopper to be unloaded. The elastic sealing device is used to seal the gap between the reversible belt and the feed inlet of the hopper.

[0016] Preferably, after the reversible belt stops unloading, the PLC system controls the exhaust fan to shut down after a predetermined delay.

[0017] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention provides a high-pressure roller buffer bin dust collection device with reversible belt start-up unloading. Monitoring modules in each bin detect the material accumulation height in real time, and the PLC system synchronously collects the belt unloading speed, laying a solid data foundation for dust prediction. The PLC's built-in AI algorithm module pre-stores historical operational data specific to each bin, covering the dust concentration variation patterns under different material heights and unloading speeds, adapting to the different dust rates caused by bin structural differences. This module, combined with bin identification, real-time material height, unloading speed, and corresponding historical data, accurately predicts the real-time dust concentration throughout the unloading process. The PLC system dynamically adjusts the power of the exhaust components based on the predicted concentration, achieving a positive correlation between power and dust concentration; the higher the concentration, the greater the exhaust power, precisely matching dust collection requirements. During unloading, the L-shaped dust collection hood, inverted at the belt conveyor head, forms a nearly fully enclosed space. Its lateral length adapts to the belt width, fully covering the material drop area and effectively restraining dust. The exhaust components are connected to the dust collection hood, efficiently extracting dust from the enclosed space, completing the dust collection operation. By using an AI algorithm module to predict dust concentration in advance based on operating conditions and adjust the exhaust power accordingly, compared to the traditional method of directly detecting dust concentration and then adjusting it, the problem of control lag is effectively avoided, the timeliness of dust collection power adjustment is improved, and the reliability of the device under harsh operating conditions is also enhanced. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 This is a schematic diagram of the overall front view structure of the present invention; Figure 3 This is a schematic diagram of the overall left-side structure of the present invention; Figure 4 This is a schematic diagram of the structure of the sliding air duct in this invention; Figure 5 This is a flowchart illustrating the overall workflow of the system of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Reversible belt; 2. Dust collection hood; 3. Dust extraction pipe; 4. Sliding air duct; 5. Rubber sealing strip; 6. Dust collection trolley; 7. Roller; 8. Wear-resistant roller; 9. Laser rangefinder. Detailed Implementation

[0020] The following is in conjunction with the appendix Figures 1-5 The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] like Figures 1-5As shown, the present invention provides a high-pressure roller buffer bin dust collection device, including an exhaust assembly and a dust collection hood 2. The dust collection hood 2 is connected to the exhaust assembly and covers the reversible belt 1. The power of the exhaust assembly is adjustable. The device also includes a monitoring module, an identification unit, and a PLC system. The monitoring module is located in each hopper and is used to detect the material accumulation height in each hopper in real time. The PLC system is electrically connected to the reversible belt 1 (used to obtain the unloading speed of the reversible belt 1) and the exhaust assembly. The PLC system has an AI algorithm module, which contains historical operation data for each hopper. The historical operation data represents the material accumulation height of each hopper under different material pile conditions. The AI ​​algorithm module predicts the real-time dust concentration during the unloading process of the reversible belt 1 based on the material accumulation height and the real-time dust concentration of the reversible belt 1 under different unloading speeds (each silo has a different structure, and the dust generation rate is different under the same material accumulation height and the same unloading speed). The PLC system controls the power of the exhaust fan component according to the predicted real-time dust concentration so that the power of the exhaust fan component is proportional to the predicted real-time dust concentration, so that the dust concentration in the unloading area is controlled within the preset standard range.

[0022] The working principle of the above embodiments is briefly described below: The dust collection hood 2 has an L-shaped opening that is inverted and placed over the conveyor head to form a nearly fully enclosed space. The dust collection hood 2 is installed after the cleaning devices for the head and tail pulleys of the reversible belt 1 are welded. The distance between the edge of the dust collection hood 2's opening and the scraper blades of the cleaning device is ≥100mm. The lateral length of the L-shaped opening of the dust collection hood 2 is adapted to the width of the reversible belt 1, completely covering the material drop area of ​​the funnel at the tail of the reversible belt 1. All metal parts of the dust collection hood 2 are painted, with the paint color consistent with the main body of the reversible belt 1, and the paint thickness is ≥80μm.

[0023] When this high-pressure roller buffer dust collection device is in use, the reversible belt 1 starts unloading material into the designated silo. The identification unit identifies the silo to be unloaded, and the monitoring module in each silo starts synchronously to detect the material accumulation height in the silo to be unloaded in real time. At the same time, the PLC system obtains the current unloading speed of the reversible belt 1 to provide basic data for dust concentration prediction.

[0024] The PLC system's built-in AI algorithm module pre-stores historical operational data specific to each silo. This data includes real-time changes in dust concentration for each silo under different material accumulation heights and different unloading speeds of the reversible belt 1, adapting to the issue of varying dust rates caused by differences in the structure of each silo. Based on the silo identifier to be unloaded, the material accumulation height detected by the monitoring module, and the unloading speed of the reversible belt 1 obtained by the PLC system, combined with the corresponding historical operational data for that silo, the AI ​​algorithm module accurately predicts the real-time dust concentration during the unloading process.

[0025] The PLC system dynamically adjusts the power of the exhaust components based on the real-time dust concentration predicted by the AI ​​algorithm module, so that the power of the exhaust components is proportional to the predicted real-time dust concentration. The higher the dust concentration, the greater the exhaust power, and the lower the dust concentration, the smaller the exhaust power, thus achieving precise matching of exhaust power.

[0026] During the unloading process, the dust collection hood 2, which is inverted on the L-shaped opening of the conveyor head, forms a nearly fully enclosed space. Its lateral length is adapted to the width of the reversible belt 1, completely covering the material drop area of ​​the funnel at the tail of the reversible belt 1. This effectively confines the dust generated during unloading within the enclosed space. Furthermore, the edge of the dust collection hood 2 is kept at a distance of ≥100mm from the scraper blades of the cleaner to avoid interference during operation. After the exhaust component is connected to the dust collection hood 2, it can efficiently extract and collect the dust in the enclosed space, thus achieving dust collection.

[0027] All metal parts of the dust collection hood 2 are coated with a paint thickness of ≥80μm, and the paint color is consistent with the main body of the reversible belt 1 equipment, which not only improves the corrosion resistance of the dust collection hood 2, but also ensures the overall appearance uniformity of the equipment.

[0028] The high-pressure roller buffer chamber dust collection device of the present invention uses an AI algorithm module to predict dust concentration in advance based on working conditions and adjust the exhaust power accordingly. Compared with the traditional method of directly detecting dust concentration and then adjusting, it effectively avoids the problem of control lag, improves the timeliness of dust collection power control, and enhances the reliability of the device under harsh working conditions. Combined with the efficient dust collection function of the near-fully enclosed dust collection hood 2, it achieves reasonable allocation of exhaust power while ensuring dust collection effect and avoiding energy waste.

[0029] Based on the above embodiments, in order to provide accurate silo information for early prediction of dust concentration, further ensure the proactive nature of dust collection control, and avoid dust collection lag caused by silo identification errors.

[0030] like Figures 1-3As shown, the identification unit includes a laser rangefinder 9, which is electrically connected to the PLC system. The laser rangefinder 9 is mounted on the dust collection hood 2 and is used to detect the real-time position of the dust collection hood 2 relative to the feed inlet of each hopper. The AI ​​algorithm module determines the moving direction of the reversible belt 1 and the hopper to be unloaded based on the real-time position of the dust collection hood 2 relative to the feed inlet of each hopper.

[0031] The PLC system is electrically connected to a laser rangefinder 9 fixed to the outer wall of the dust collection hood 2. The laser rangefinder 9 points along the width of the reversible belt 1. During operation, the laser rangefinder 9 continuously detects the real-time position of the dust collection hood 2 relative to the feed inlet of each hopper and transmits the position data to the PLC system in real time. After receiving the position data, the AI ​​algorithm module accurately determines the movement direction of the reversible belt 1 based on the position change trend, and simultaneously locks onto the hopper to be unloaded that is aligned with the dust collection hood 2. The unloading target can be automatically identified without manual intervention, improving the accuracy and timeliness of hopper identification, providing accurate hopper information for early prediction of dust concentration, further ensuring the proactive nature of dust collection control, and avoiding dust collection lag caused by hopper identification errors.

[0032] As a preferred option, such as Figures 1-3 and Figure 5 As shown, the laser rangefinder 9 is fixed to the outer wall of the dust collection hood 2 by a bracket, and the laser rangefinder 9 points along the width direction of the reversible belt 1. This enables accurate acquisition of the position data of the dust collection hood 2. The laser rangefinder 9 is fixed to the outer wall of the dust collection hood 2 by a bracket, and its pointing direction is along the width direction of the reversible belt 1. This installation method ensures that the detection direction of the laser rangefinder 9 is consistent with the alignment direction of the hopper inlet, enabling accurate acquisition of the relative position data between the dust collection hood 2 and the hopper inlet. This avoids position detection errors caused by installation angle deviations, ensuring the accuracy of the AI ​​algorithm module's judgment on the movement direction of the reversible belt 1 and the hopper to be unloaded. Precise position data provides reliable hopper information for early prediction of dust concentration, avoiding deviations in ventilation power control caused by hopper identification errors from the source, ensuring the proactive and timely nature of dust collection control, and improving the overall operational accuracy of the device.

[0033] As a preferred embodiment, each hopper is equipped with multiple exhaust vents, which are evenly distributed within the hopper. The exhaust assembly is connected to these multiple exhaust vents. Each exhaust vent has an anti-clogging grille at its inlet. With the multiple exhaust vents evenly distributed within each hopper connected to the exhaust assembly, dust generated during unloading is constrained by the dust collection hood 2, while dust within the hopper can be simultaneously extracted through the multi-directional exhaust vents, achieving comprehensive dust absorption within the hopper and improving dust collection efficiency. The anti-clogging grille at the exhaust vent inlet effectively prevents large pieces of material from entering the exhaust assembly, avoiding clogging and ensuring optimal exhaust performance.

[0034] As a preferred option, such as Figures 1-3 and Figure 5 As shown, the exhaust assembly includes a dust extraction duct 3, an electrically controlled air valve, and an exhaust fan. The exhaust fan is connected to the dust extraction duct 3 via the electrically controlled air valve. The dust extraction duct 3 is connected to a dust collection hood 2 and multiple exhaust ports. Both the electrically controlled air valve and the exhaust fan are electrically connected to the PLC system. The PLC system controls the opening of the electrically controlled air valve and the start / stop of the exhaust fan based on the predicted real-time dust concentration. The exhaust assembly consists of a dust extraction duct 3, an electrically controlled air valve, and an exhaust fan. The exhaust fan is connected to the dust extraction duct 3 via the electrically controlled air valve, and both the electrically controlled air valve and the exhaust fan are electrically connected to the PLC system. The inner wall of the dust extraction duct 3 is coated with a polytetrafluoroethylene (PTFE) wear-resistant coating. This coating reduces the wear of dust particles on the inner wall of the dust extraction duct 3, extending its service life. The removable cleaning port on the dust extraction duct 3 facilitates regular cleaning of the dust accumulated inside, preventing dust accumulation from affecting the extraction power, ensuring the stable operation of the extraction components under harsh working conditions, and avoiding dust collection delays caused by malfunctions in the dust extraction duct 3. The PLC system synchronously controls the opening of the electrically controlled air valve and the start / stop of the exhaust fan based on the real-time dust concentration predicted by the AI ​​algorithm module. As an electrically controlled air valve made of 304 stainless steel, its opening can be precisely adjusted within the range of 0-100%. When the dust concentration is high, the valve opening is increased and the exhaust fan is started to run at high power. When the dust concentration is low, the valve opening is decreased and the exhaust fan power is reduced or turned off. This achieves refined and hierarchical control of the exhaust power. Compared with simply controlling the exhaust fan power, it further improves the accuracy of power matching, avoids energy waste, ensures timely dust collection response, and adapts to the working conditions of different dust concentrations.

[0035] As a preferred embodiment, the system also includes a dust concentration monitoring module. This module comprises multiple dust concentration sensors, which are respectively located inside the dust collection hood 2, at the feed inlet of the hopper, and at the outlet of the dust extraction pipe 3. Each dust concentration sensor detects the real-time dust concentration at its location. All dust concentration sensors are electrically connected to the PLC system, which is equipped with an audible and visual alarm and a timing module. The PLC system has a preset concentration threshold. When the real-time dust concentration detected by any dust concentration sensor exceeds the preset threshold for a set time (10 seconds), the PLC system activates the audible and visual alarm. The dust concentration sensors located inside the dust collection hood 2, at the feed inlet of the hopper, and at the outlet of the dust extraction pipe 3 form the dust concentration monitoring module. Each sensor has a monitoring range of 0-1000 mg / m³ and a measurement accuracy of ≤±5%FS, detecting the dust concentration in its area in real time and transmitting the data to the PLC system. This real-time monitoring data can, on the one hand, verify and correct the dust concentration prediction results of the AI ​​algorithm module, improve the accuracy of subsequent predictions, and further optimize the timeliness of ventilation power control; on the other hand, the PLC system has a preset concentration threshold. When the concentration value detected by any sensor is higher than the threshold and continues to exceed the set time, the PLC system immediately controls the audible and visual alarm to sound an alarm. At the same time, the timing module records the duration of exceeding the threshold, promptly reminding staff to check for dust collection faults, avoiding dust concentration exceeding the standard due to equipment abnormalities, improving the fault early warning capability of the device under harsh working conditions, and ensuring the reliable operation of the dust collection system.

[0036] As a preferred option, such as Figures 1-4As shown, a sliding air duct 4 is provided between the dust collection hood 2 and the dust extraction pipe 3. The sliding air duct 4 is arranged parallel to the reversible belt 1 and is connected to the dust extraction pipe. A ventilation groove along its length is provided on one side of the sliding air duct 4. A vacuuming trolley 6 is slidably connected to the sliding air duct 4. The vacuuming trolley 6 is equipped with an exhaust pipe. The ventilation groove is connected to the exhaust pipe of the vacuuming trolley 6. The dust collection hood 2 is fixedly connected to the vacuuming trolley 6 and is connected to the exhaust pipe. A rubber sealing strip 5 is provided on the ventilation groove to seal the gap between the ventilation groove and the exhaust pipe. The dust collection hood 2 is connected to the exhaust pipe via the dust extraction pipe 3 by a flange, and an oil-resistant asbestos gasket is installed between the flanges. The suction trolley includes a frame welded from Q235 steel plate, four wear-resistant rollers 8, and a guiding mechanism. The wear-resistant rollers 8 are installed at the bottom of the frame and cooperate with the steel guide rails on the equipment frame. The guiding mechanism consists of guide blocks on both sides of the frame and guide rail limiting grooves, which restrict the movement trajectory of the suction trolley to prevent deviation. A snap-on anti-derailment device is added to the bottom of the frame of the suction trolley, which fits tightly with the steel guide rails. The frame also has pre-drilled connection holes for fixing angle steel to the sprocket cover; during on-site installation, the connection holes are welded to the fixing angle steel. When the reversible belt 1 moves to change chambers and unload material, the dust collection hood 2 moves synchronously, driving the suction trolley 6 to slide along the sliding air duct 4, ensuring that the dust collection hood 2 and the dust extraction pipe 3 are always connected, avoiding air duct disconnection due to belt movement, and achieving continuous dust collection without interruption during the moving unloading process. An oil-resistant asbestos gasket is added to the flange connection between the suction trolley 6 and the dust collection hood 2 to improve the air duct sealing performance and prevent dust leakage. The wear-resistant rollers 8 of the dust collection trolley 6 are matched with the steel guide rail, and the guiding mechanism restricts the movement trajectory. The snap-on anti-derailment device is tightly matched with the guide rail to ensure the stability of the trolley movement. The reserved connection holes can be welded and fixed on site, which improves the reliability of equipment installation and operation, adapts to the unloading conditions of frequent belt movement, and avoids dust collection failure caused by equipment deviation.

[0037] As a preferred option, such as Figure 2As shown, the vacuum trolley 6 is equipped with multiple rollers 7, which are arranged along the width of the ventilation groove. Two rollers 7 are located on both sides of the exhaust pipe, and the rollers 7 on both sides abut against the rubber sealing strip 5 located on both sides of the exhaust pipe. Under the squeezing action of the rollers 7 on both sides, the part of the ventilation groove located on both sides of the exhaust pipe is sealed by the rubber sealing strip 5. The remaining rollers 7 are located on the outer wall of the exhaust pipe, and the part of the rubber sealing strip 5 located in the middle of the exhaust pipe abuts against the rollers 7 on the outer wall of the exhaust pipe, so that the part of the ventilation groove located in the middle of the exhaust pipe is connected to the exhaust pipe. The sealing assembly is adapted to the unloading gap between the powder buffer ore bin inlet and the reversible belt 1, sealing the unloading gap while meeting the requirements for moving unloading. Multiple rollers 7, arranged along the width of the ventilation duct on the dust collection trolley 6, cooperate with the rubber sealing strip 5 of the ventilation duct. Two rollers 7 abut against the rubber sealing strip 5 on both sides of the exhaust pipe, sealing the area on both sides of the ventilation duct by squeezing the rubber sealing strip 5. The remaining rollers 7 abut against the rubber sealing strip 5 on the outer wall of the exhaust pipe, keeping the middle of the ventilation duct connected to the exhaust pipe. This structure ensures the sealing of the area connecting the ventilation duct and the exhaust pipe as the dust collection trolley 6 moves along the sliding air duct 4, while simultaneously sealing non-connected areas in real time. This effectively prevents dust leakage from the ventilation duct gaps, improves the overall sealing effect of the air duct, minimizes dust overflow while meeting the requirements for moving unloading on the reversible belt 1, ensures efficient dust collection, further improves the timeliness of dust collection, and avoids a decrease in dust collection efficiency due to dust leakage.

[0038] As a preferred embodiment, the reversible belt 1 is equipped with an elastic sealing device at its end. This elastic sealing device is connected to a pneumatic control circuit, which is electrically connected to a PLC system. When the PLC system controls the pneumatic control circuit to inflate the elastic sealing device, the device fits snugly against the inlet of the hopper to be unloaded. The elastic sealing device seals the gap between the reversible belt 1 and the hopper's inlet. The elastic sealing device at the end of the reversible belt 1 is connected to the pneumatic control circuit controlled by the PLC system. When the AI ​​algorithm module locks the hopper to be unloaded, the PLC system controls the pneumatic control circuit to inflate the elastic sealing device, causing it to expand and fit tightly against the hopper's inlet. This seals the gap between the reversible belt 1 and the hopper's inlet, preventing dust from overflowing through this gap during unloading, further reducing the dust diffusion range, and forming a double-seal protection with the dust collection hood 2, thus improving the dust containment effect. The opening width of the elastic sealing device is adapted to the size of the reversible belt 1. The adjustable gap between the bottom and the upper surface of the belt can be flexibly adjusted according to the thickness of the material being conveyed, avoiding interference with the belt while ensuring the sealing effect. It is suitable for different materials and different unloading volumes, improving the adaptability and sealing reliability of the equipment, and providing a guarantee for the efficient collection of dust by the exhaust component.

[0039] As a preferred embodiment, after the reversible belt 1 stops unloading, the PLC system controls the exhaust fan to shut down after a predetermined delay. When the reversible belt 1 stops unloading, the PLC system controls the exhaust fan to shut down after a predetermined delay (30 seconds). After unloading stops, some dust will still remain in the hopper and dust collection hood 2. The delayed operation of the exhaust fan can fully extract and collect this residual dust, achieving dust removal after unloading and avoiding incomplete dust collection caused by the spread of residual dust.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A dust collection device for a high-pressure roller buffer bin, comprising an exhaust assembly and a dust collection hood, wherein the dust collection hood is connected to the exhaust assembly, the dust collection hood covers a reversible belt, and the power of the exhaust assembly is adjustable, characterized in that, Also includes: A monitoring module is installed in each silo, and the monitoring module is used to detect the stacking height of materials in each silo in real time; An identification unit, located on the dust collection hood, is used to identify the hopper to be unloaded. The PLC system is electrically connected to the reversible conveyor belt and the exhaust system. The PLC system has an AI algorithm module, which contains historical operation data for each silo. This historical operation data shows the real-time changes in dust concentration generated by each silo under different material accumulation heights and different unloading speeds of the reversible conveyor belt. Based on the silo to be unloaded, the material accumulation height of the silo, and the unloading speed of the reversible conveyor belt, combined with the historical operation data of the silo, the AI ​​algorithm module predicts the real-time dust concentration during the unloading process of the reversible conveyor belt. The PLC system controls the power of the exhaust system according to the predicted real-time dust concentration, so that the power of the exhaust system is proportional to the predicted real-time dust concentration, thereby controlling the dust concentration in the unloading area within a preset acceptable range.

2. The dust collection device for a high-pressure roller buffer bin as described in claim 1, characterized in that, The identification unit includes a laser rangefinder, which is electrically connected to the PLC system. The laser rangefinder is mounted on the dust collection hood and is used to detect the real-time position of the dust collection hood relative to the feed inlet of each hopper. The AI ​​algorithm module determines the direction of movement of the reversible belt and the hopper to be unloaded based on the real-time position of the dust collection hood relative to the feed inlet of each hopper.

3. The dust collection device for a high-pressure roller buffer bin as described in claim 2, characterized in that, The laser rangefinder is fixed to the outer wall of the dust collection hood by a bracket, and the laser rangefinder points along the width direction of the reversible belt.

4. The dust collection device for a high-pressure roller buffer bin as described in claim 3, characterized in that, Each hopper is equipped with multiple exhaust vents, which are distributed throughout the hopper. The exhaust assembly is connected to the multiple exhaust vents.

5. The dust collection device for a high-pressure roller buffer bin as described in claim 1, characterized in that, The exhaust assembly includes a dust extraction duct, an electrically controlled air valve, and an exhaust fan. The exhaust fan is connected to the dust extraction duct via the electrically controlled air valve. The dust extraction duct is connected to a dust collection hood and multiple exhaust ports. Both the electrically controlled air valve and the exhaust fan are electrically connected to the PLC system. The PLC system controls the opening degree of the electrically controlled air valve and the start and stop of the exhaust fan based on the predicted real-time dust concentration.

6. The dust collection device for a high-pressure roller buffer bin as described in claim 5, characterized in that, It also includes a dust concentration monitoring module, which includes multiple dust concentration sensors. These sensors are respectively installed inside the dust collection hood, at the feed inlet of the hopper, and at the outlet of the dust extraction pipe. Each dust concentration sensor is used to detect the real-time dust concentration value at its location. All the multiple dust concentration sensors are electrically connected to the PLC system. The PLC system is electrically connected to an audible and visual alarm and a timing module. The PLC system has a preset concentration threshold. When the real-time dust concentration value detected by any dust concentration sensor is higher than the preset concentration threshold and exceeds a set time, the PLC system controls the audible and visual alarm to sound an alarm.

7. The dust collection device for a high-pressure roller buffer bin as described in claim 5, characterized in that, A sliding air duct is provided between the dust collection hood and the dust extraction pipe. The sliding air duct is arranged parallel to the reversible belt and is connected to the dust extraction pipe. A ventilation groove along its length is provided on one side of the sliding air duct. A dust collection trolley is slidably connected to the sliding air duct. The dust collection trolley is equipped with an exhaust pipe. The ventilation groove is connected to the exhaust pipe of the dust collection trolley. The dust collection hood is fixedly connected to the dust collection trolley and is connected to the exhaust pipe. A rubber sealing strip is provided on the ventilation groove. The rubber strip is used to seal the gap between the ventilation groove and the exhaust pipe.

8. The dust collection device for a high-pressure roller buffer bin as described in claim 7, characterized in that, The vacuum trolley is equipped with multiple rollers, all of which are arranged along the width of the ventilation groove. Two of the rollers are located on both sides of the exhaust pipe, and the rollers on both sides abut against the rubber sealing strip located on both sides of the exhaust pipe. Under the squeezing action of the rollers on both sides, the portion of the ventilation groove located on both sides of the exhaust pipe is sealed by the rubber sealing strip. The remaining rollers are located on the outer wall of the exhaust pipe, and the portion of the rubber sealing strip located in the middle of the exhaust pipe abuts against the rollers on the outer wall of the exhaust pipe, so that the portion of the ventilation groove located in the middle of the exhaust pipe is connected to the exhaust pipe.

9. The dust collection device for a high-pressure roller buffer bin as described in claim 1, characterized in that, The reversible belt is provided with an elastic sealing device at its end. The elastic sealing device is connected to a pneumatic control circuit, which is electrically connected to a PLC system. When the PLC system controls the pneumatic control circuit to inflate the elastic sealing device, the elastic sealing device can fit against the feed inlet of the hopper to be unloaded. The elastic sealing device is used to seal the gap between the reversible belt and the feed inlet of the hopper.

10. The dust collection device for a high-pressure roller buffer bin as described in claim 1, characterized in that, After the reversible belt stops unloading, the PLC system controls the exhaust fan to shut down after a predetermined delay.

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