A photoelectric beneficiation post-area pressurized dust collecting device

Abstract

The utility model relates to photoelectric beneficiation equipment technical field, concretely is a kind of photoelectric beneficiation post area pressure recovery dust collector, including conveying belt, and the conveying belt discharge end outside is formed with a dust collection area by high pressure spraying module, multiple micropore spraying module, dust removal module, high pressure spraying module is located in the lower part of discharge end, and multiple micropore spraying module is located just below dust collection area, and dust removal module is located just above dust collection area, and the front of multiple micropore spraying module is sequentially provided with concentrate collection groove, tailing collection groove.In the photoelectric beneficiation post area pressure recovery dust collector, the dust collection area is formed by the innovative design of high pressure spraying module, multiple micropore spraying module and dust removal module, and significant technical effects are achieved.

Description

Technical Field

[0001] This utility model relates to the field of photoelectric mineral processing equipment technology, specifically to a photoelectric mineral processing post-processing area pressurization dust collection device. Background Technology

[0002] In the field of photoelectric mineral processing equipment technology, efficient dust collection devices are crucial for ensuring the accuracy of the mineral processing process and the stable operation of the equipment. Taking the photoelectric separation process for phosphate ore as an example, the current mineral processing process faces many serious problems. During the process of ore entering the separation chamber via the conveyor belt, a large amount of dust is generated after the solenoid valve sprays the ore. This dust quickly disperses into the radiation source identification area and every corner of the separation chamber. As the separation time continues to increase, the amount of dust accumulates. Some of the dust gradually falls to the ore separation area below the separation chamber, not only re-adhering to the surface of new ore, but also further spreading to the periphery of the device area.

[0003] Existing dust removal methods, such as using only external drum dust collectors, have significant limitations. Because the sorting chamber where the dust collection port is located is quite spacious, the actual effective negative pressure dust collection area is relatively small. Furthermore, when dust is peeled off from the surface of phosphate ore particles, the residual pressure of the blowing air acting on the surface cannot efficiently push the dust into the dust collection port. These problems have serious consequences. Due to the influence of dust dispersion, the internal sensors experience decreased sensitivity due to long-term dust accumulation, affecting sensing performance and sometimes leading to sorting delays or even short periods without ore in the sorting bins. In addition, large amounts of dust accumulation can clog the solenoid valve nozzles, requiring shutdown and cleaning every two weeks to maintain normal equipment operation. This not only increases the frequency of equipment maintenance but also significantly raises maintenance costs and consumes a considerable amount of time.

[0004] Compared with related technologies, such as the "Dust Removal Device for Conveyor Belts in Mineral Processing Machinery" with application number CN202321942658.5, which mainly improves upon the shortcomings of traditional integrated dust removal methods to some extent by setting up dust collection boxes and booster pumps, avoiding the problem of device interruption when workers replace the filter mechanism, and also providing power support for the dust removal process. However, this device mainly focuses on dust removal from the conveyor belt and does not address the special situation of dust generation in photoelectric mineral processing. Utility Model Content

[0005] The purpose of this invention is to provide a post-photoelectric mineral processing area pressurization dust collection device to solve the problem mentioned in the background art that the dust collection efficiency and the ability to guarantee mineral processing accuracy are still insufficient in photoelectric mineral processing scenarios.

[0006] To achieve the above objectives, this utility model provides a photoelectric mineral processing post-processing pressurized dust collection device, including a conveyor belt. A dust collection area is formed outside the discharge end of the conveyor belt via a high-pressure jetting module, a multi-micro-hole jetting module, and a dust removal module. The high-pressure jetting module is located below the discharge end, the multi-micro-hole jetting module is directly below the dust collection area, and the dust removal module is directly above the dust collection area. The high-pressure jetting module jets dry compressed air to peel off dust from the surface of the phosphate rock. The remaining jetting force pushes the dust into the dust collection area. The multi-micro-hole jetting module forms a uniform upward airflow to counteract the gravity of the dust and prevent it from shifting out of the area. Under the vertical pressure gradient formed by the positive pressure of the bottom multi-micro-hole jetting module and the negative pressure of the top dust removal module, the dust migrates upwards and enters the dust removal module for processing. A concentrate collection tank and a tailings collection tank are sequentially arranged in front of the multi-micro-hole jetting module.

[0007] This system, located outside the discharge end of the conveyor belt, comprises a high-pressure jet cleaning module, a multi-micro-orifice jet cleaning module, and a dust collection module working together to form a dust collection area. The high-pressure jet cleaning module, situated below the discharge end, jets dry compressed air, using the impact force of the airflow to strip dust from the surface of the phosphate rock. The residual force after jetting propels the dust into the dust collection area. The multi-micro-orifice jet cleaning module, positioned directly below the dust collection area, generates a uniform upward airflow. This airflow moves in the opposite direction to the dust's gravity, counteracting its force and preventing it from shifting out of the collection area due to gravity. The dust collection module, positioned directly above the dust collection area, provides negative pressure. Thus, the positive pressure from the bottom multi-micro-orifice jet cleaning module and the negative pressure from the top dust collection module create a vertical pressure gradient, causing the dust to migrate upwards under this pressure gradient and ultimately be processed within the dust collection module.

[0008] Preferably, the multi-micro-hole jetting module includes a multi-micro-hole component, which is connected to a Roots blower via an air supply pipe. The high-pressure jetting module includes a jetting chamber, which is connected to a compressed air storage tank via a jetting pipe. The dust removal module includes a drum dust collector, the air inlet of which is connected to a dust removal channel, and the end of the dust removal channel is provided with a dust suction port.

[0009] In this multi-micro-orifice jet cleaning module, the multi-micro-orifice component is connected to a Roots blower via an air supply pipe. The high-pressure gas generated by the Roots blower is transmitted to the multi-micro-orifice component through the air supply pipe, providing a power source for generating a uniform upward airflow. The jet cleaning chamber of the high-pressure jet cleaning module is connected to a compressed air storage tank via a jet pipe. The compressed air stored in the compressed air storage tank enters the jet cleaning chamber through the jet pipe when needed, and is then jetted out from the jet cleaning chamber to achieve the function of removing dust. In the dust removal module, the air inlet of the drum dust collector is connected to the dust removal channel. The dust suction port at the end of the dust removal channel is used to suck in dust, and the dust enters the drum dust collector for treatment through the dust removal channel.

[0010] Preferably, the multi-microporous component includes a cuboid support with a multi-microporous plate mounted on the top of the support. Several jet pipes are installed at equal intervals along the length of the support. The jet pipes are supplied with air through a central air inlet, and the outside of the air inlet is connected to an air delivery pipe.

[0011] In this multi-microporous component, a cuboid support frame provides overall structural support. Several jet pipes, evenly spaced along the length of the support, are supplied with gas through a single inlet, ensuring that the gas output from the Roots blower is evenly distributed to each jet pipe. The jet pipes then transmit the gas to the multi-microporous plate. The numerous micropores on the multi-microporous plate disperse the gas, creating a uniform upward airflow.

[0012] Preferably, the number of jet pipes is four, with a diameter of 25 mm; the diameter of the air supply pipe is 50 mm; and the pore diameter of the multi-micro-perforated plate is 0.5 mm with a pore spacing of 1 mm.

[0013] This setup, which specifies four jet pipes with a diameter of 25mm, a gas delivery pipe with a diameter of 50mm, and a multi-micro-orifice plate with an orifice diameter of 0.5mm and an orifice spacing of 1mm, is the result of careful design and calculation. The four appropriately sized jet pipes, combined with the specific diameter gas delivery pipe, ensure both sufficient gas flow and uniform gas distribution within the multi-micro-orifice component. The orifice diameter and spacing of the multi-micro-orifice plate determine the velocity and density of the ejected gas, ensuring that the ejected airflow generates sufficient lift to counteract the gravity of the dust while maintaining airflow uniformity.

[0014] Preferably, a high-pressure jet solenoid valve is installed on the jet pipe.

[0015] This feature includes a high-pressure solenoid valve installed on the blowpipe, which controls the flow of compressed air within the blowpipe according to actual working needs. When it is necessary to remove dust from the surface of the phosphate rock, the solenoid valve opens, and compressed air enters the blowpipe chamber and is ejected; when blowpipe cleaning is not required, the solenoid valve closes, cutting off the compressed air supply.

[0016] Preferably, the top of the spray chamber is sloped, and two rows of spray holes are provided on the slope, with the upper row being a row of small holes and the lower row being a row of large holes.

[0017] The top of the blow chamber is designed with a slope, and two rows of blow holes are set on the slope. The combination of small holes in the upper row and large holes in the lower row results in differences in the direction and intensity of the airflow emitted from the blow chamber. The airflow emitted from the large holes has a greater impact force and is used for the main dust removal; the airflow emitted from the small holes can perform secondary blowing and adjust the direction of the dust, so that the dust can better enter the dust collection area.

[0018] Preferably, the slope angle of the spray chamber is 32°±0.5°.

[0019] This setting, with the slope angle of the blow chamber set at 32°±0.5°, comprehensively considers factors such as the direction and velocity of the airflow after it is ejected, as well as its effect on dust. This angle allows the airflow ejected from the large and small orifices to form an optimal combined force in a specific direction, maximizing the airflow's ability to strip and guide dust.

[0020] Preferably, the dust suction port is a 600mm×400mm rectangular port, the vertical distance between the dust suction port and the multi-micro-hole blowing module is 24000mm, the high-pressure blowing module is located 90mm directly above and behind the multi-micro-hole blowing module, and the horizontal distance between the high-pressure blowing module and the multi-micro-hole blowing module is 20mm.

[0021] This design specifies a 600mm x 400mm rectangular suction port, a vertical distance of 24000mm between the suction port and the multi-micro-orifice blowing module, and a precise positional relationship between the high-pressure blowing module and the multi-micro-orifice blowing module (the high-pressure blowing module is located 90mm directly above and behind the multi-micro-orifice blowing module, with a horizontal distance of 20mm). This is to ensure a reasonable air pressure gradient and airflow field between the modules. A suitably sized suction port ensures sufficient suction to draw in dust; the precise positional relationship between the modules ensures that the positive pressure of the bottom multi-micro-orifice blowing module and the negative pressure of the top dust removal module work together effectively to form a stable vertical air pressure gradient, guiding the dust upwards smoothly.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] The innovative design of the post-concentration pressurized dust collection device for photoelectric mineral processing, which forms a dust collection area through a high-pressure jetting module, a multi-micro-hole jetting module, and a dust removal module, has achieved remarkable technical results.

[0024] The high-pressure jetting module sprays dry compressed air to remove dust from the surface of phosphate rock. The multi-micro-hole jetting module forms a uniform upward airflow to prevent dust from shifting. Combined with the negative pressure effect of the dust removal module, the dust situation at the ore dressing machine site is greatly reduced, avoiding the problem of dust covering the internal sensors and affecting the sensor sensitivity. At the same time, it also greatly improves the on-site environmental hygiene and avoids adverse effects on the health of the staff.

[0025] Regarding dust collection efficiency, the rectangular dust collection area constructed by this device utilizes the positive pressure of the bottom multi-micro-hole jet cleaning module and the negative pressure of the top dust removal module to create a vertical air pressure gradient, enabling dust to migrate upwards efficiently into the dust removal module. Compared to traditional methods, the dust volume at the bottom exhaust port of the drum dust collector is increased by nearly 72%-86%, significantly improving dust collection efficiency, effectively improving the dust environment at the mineral processing site, and reducing dust dispersion and accumulation.

[0026] Regarding equipment maintenance, due to the effective control of dust accumulation and the alleviation of solenoid valve nozzle blockage, the maintenance cycle has been extended from once every two weeks to once every three months, reducing annual maintenance costs by nearly 40%. This not only reduces equipment downtime for maintenance and improves equipment operating efficiency, but also lowers the company's operating costs.

[0027] Furthermore, this device systematically solves three major industry pain points—dust interference identification, low dust collection efficiency, and environmental pollution—through the synergistic effect of air pressure and the principle of gravity difference separation. It provides an innovative solution for dust control in photoelectric separation of phosphate rock in the mineral processing field and is of great significance to promoting the development of photoelectric mineral processing equipment technology. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the high-pressure jetting module of this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the multi-micro-hole jet blowing module in this utility model;

[0031] Figure 4 This is a schematic diagram of the dust removal module in this utility model;

[0032] Figure 5 This is a schematic diagram of the spray chamber in this utility model;

[0033] Figure 6 This is a schematic diagram of the structure of the multi-microporous component in this utility model;

[0034] The meanings of the labels in the diagram are as follows:

[0035] 1. Conveyor belt; 2. High-pressure jet cleaning module; 21. Jet cleaning chamber; 211. Small hole; 212. Large hole; 22. Jet cleaning pipe; 221. High-pressure jet cleaning solenoid valve; 23. Compressed air storage tank; 3. Multi-micro-hole jet cleaning module; 31. Multi-micro-hole component; 311. Support; 312. Multi-micro-hole plate; 313. Jet pipe; 314. Air inlet; 32. Air delivery pipe; 33. Roots blower; 4. Dust removal module; 41. Rotary drum dust collector; 42. Dust removal channel; 43. Dust suction port; 5. Concentrate collection tank; 6. Tailings collection tank. Detailed Implementation

[0036] 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.

[0037] This utility model provides a photoelectric mineral processing post-concentration regional pressurization dust collection device, such as... Figure 1 As shown, the system includes a conveyor belt 1. A dust collection area is formed on the outer side of the discharge end of the conveyor belt 1 by a high-pressure jetting module 2, a multi-micro-hole jetting module 3, and a dust removal module 4. The high-pressure jetting module 2 is located below the discharge end, the multi-micro-hole jetting module 3 is located directly below the dust collection area, and the dust removal module 4 is located directly above the dust collection area. The high-pressure jetting module 2 jets dry compressed air to peel off the dust on the surface of the phosphate rock. The remaining jetting force pushes the dust into the dust collection area. The multi-micro-hole jetting module 3 forms a uniform upward airflow to counteract the gravity of the dust and prevent the dust from shifting out of the area. Under the action of the vertical air pressure gradient formed by the positive pressure of the bottom multi-micro-hole jetting module 3 and the negative pressure of the top dust removal module 4, the dust migrates upward and enters the dust removal module 4 for processing. A concentrate collection tank 5 and a tailings collection tank 6 are arranged in sequence in front of the multi-micro-hole jetting module 3.

[0038] On the outer side of the discharge end of the conveyor belt 1, a high-pressure jet cleaning module 2, a multi-micro-hole jet cleaning module 3, and a dust removal module 4 work together to form a dust collection area. The high-pressure jet cleaning module 2, located below the discharge end, jets dry compressed air, using the impact force of the airflow to peel off dust from the surface of the phosphate rock. The residual force after jetting pushes the dust into the dust collection area. The multi-micro-hole jet cleaning module 3, located directly below the dust collection area, generates a uniform upward airflow. This airflow is opposite to the direction of dust gravity, counteracting the dust's weight and preventing it from shifting out of the collection area due to gravity. The dust removal module 4, located directly above the dust collection area, provides negative pressure. Thus, the positive pressure of the bottom multi-micro-hole jet cleaning module 3 and the negative pressure of the top dust removal module 4 create a vertical pressure gradient, causing the dust to migrate upwards under this pressure gradient and ultimately enter the dust removal module 4 for processing. It achieves effective stripping and collection of dust from the surface of phosphate rock. Through the collaborative work of multiple modules, a highly efficient dust collection area is constructed, ensuring that dust is treated within a specific area and preventing dust from spreading to other areas such as the radiation source identification area and sorting chamber. This reduces the interference of dust on the mineral processing process, improves the accuracy and stability of mineral processing, and also improves the working environment.

[0039] In this embodiment, as Figure 2 , Figure 3 , Figure 4As shown, the multi-micro-hole jetting module 3 includes a multi-micro-hole component 31, which is connected to the Roots blower 33 through an air supply pipe 32. The high-pressure jetting module 2 includes a jetting chamber 21, which is connected to the compressed air storage tank 23 through a jetting pipe 22. The dust removal module 4 includes a drum dust collector 41, which has a dust removal channel 42 connected to its air inlet end, and a dust suction port 43 is provided at the end of the dust removal channel 42.

[0040] In the multi-micro-orifice jet cleaning module 3, the multi-micro-orifice component 31 is connected to the Roots blower 33 via the air supply pipe 32. The high-pressure gas generated by the Roots blower 33 is transmitted to the multi-micro-orifice component 31 via the air supply pipe 32, providing a power source for generating a uniform upward airflow. The high-pressure jet cleaning module 2 includes a jet cleaning chamber 21, which is connected to a compressed air storage tank 23 via a jet cleaning pipe 22. The compressed air stored in the compressed air storage tank 23 enters the jet cleaning chamber 21 via the jet cleaning pipe 22 when needed, and is then jetted out from the jet cleaning chamber 21 to achieve the function of dust removal. The dust removal module 4 includes a drum dust collector 41, the air inlet of which is connected to a dust removal channel 42. The end of the dust removal channel 42 is provided with a dust suction port 43 for sucking in dust. The dust enters the drum dust collector 41 through the dust removal channel 42 for processing. The clear connection structure of each module ensures the realization of the device's functions. The specific composition and connection method of each module are clearly defined, providing a basic guarantee for the stable operation of the entire dust collection device. This allows each module to perform its function and cooperate with each other, ensuring that the high-pressure jetting module 2 has a stable supply of compressed air to remove dust, the multi-micro-hole jetting module 3 can continuously generate a uniform upward airflow, and the dust removal module 4 can smoothly suck in and process dust, thus improving the reliability of the device operation and the dust collection efficiency.

[0041] Specifically, such as Figure 6 As shown, the multi-microporous component 31 includes a cuboid support 311, a multi-microporous plate 312 is installed on the top of the support 311, and a number of jet pipes 313 are installed at equal intervals along the length of the support 311. The jet pipes 313 are supplied with air through an air inlet 314, and the outside of the air inlet 314 is connected to the air delivery pipe 32.

[0042] The multi-micro-orifice component 31 includes a cuboid support 311, which provides a supporting frame for the entire assembly. Several jet pipes 313 are evenly spaced along the length of the support 311. Air is supplied to each jet pipe 313 through a central air inlet 314, ensuring that the gas output from the Roots blower 33 is evenly distributed to each jet pipe 313. The gas is then transmitted to the multi-micro-orifice plate 312. The numerous micro-holes on the multi-micro-orifice plate 312 disperse the gas, forming a uniform upward airflow. This structural design ensures a uniform distribution of airflow within the multi-micro-orifice component 31, thereby ensuring a uniform and stable upward airflow generated by the multi-micro-orifice blowing module 3. This better counteracts the gravity of dust, prevents dust displacement, and improves dust collection efficiency. Furthermore, the standardized structure facilitates the installation, maintenance, and replacement of the component.

[0043] Furthermore, there are four jet pipes 313 with a diameter of 25 mm, the gas delivery pipe 32 has a diameter of 50 mm, and the multi-micro-perforated plate 312 has a perforation diameter of 0.5 mm and a perforation spacing of 1 mm.

[0044] The determination of four jet pipes 313 with a diameter of 25mm, a gas delivery pipe 32 with a diameter of 50mm, and a multi-micro-perforated plate 312 with a perforation diameter of 0.5mm and a perforation spacing of 1mm were derived through rational design and calculation. The four appropriately sized jet pipes 313, combined with the specific diameter gas delivery pipes 32, ensure gas flow while achieving uniform gas distribution within the multi-micro-perforated component 31. The perforation diameter and spacing of the multi-micro-perforated plate 312 determine the gas ejection speed and density, ensuring that the ejected airflow generates sufficient upward force to counteract dust gravity while maintaining airflow uniformity. Precise dimensional parameter design optimizes the performance of the multi-micro-perforated jet module 3, making its generated upward airflow more scientifically rational, effectively improving dust control, enhancing dust collection efficiency, ensuring efficient dust treatment within the collection area, and improving the overall working efficiency of the dust collection device.

[0045] Furthermore, such as Figure 2 As shown, a high-pressure jet solenoid valve 221 is installed on the jet pipe 22.

[0046] A high-pressure jetting solenoid valve 221 is installed on the jetting pipe 22, which can control the flow of compressed air in the jetting pipe 22 according to actual working needs. When it is necessary to remove dust from the surface of phosphate ore, the solenoid valve 221 opens, and compressed air enters the jetting chamber 21 through the jetting pipe 22 and is ejected; when jetting is not needed, the solenoid valve 221 closes, cutting off the supply of compressed air. This achieves flexible control of the jetting action of the high-pressure jetting module 2, avoiding unnecessary waste of compressed air. At the same time, it can also accurately adjust the jetting frequency and time according to different mineral processing conditions and dust generation, improving the applicability and energy efficiency of the device, and extending the service life of related components.

[0047] Furthermore, such as Figure 1 Figure 2 Figure 5 As shown, the top of the spray chamber 21 is set on an inclined surface, and two rows of spray holes are set on the inclined surface. The upper row is a row of small holes 211, and the lower row is a row of large holes 212.

[0048] The top of the blowing chamber 21 is sloped, with two rows of blowing holes on the slope: a row of small holes 211 on the upper side and a row of large holes 212 on the lower side. This combination results in differences in the direction and intensity of the airflow emitted from the blowing chamber 21. The airflow emitted from the large holes 212 has a greater impact force and is used for the primary dust removal; the airflow emitted from the small holes 211 can perform secondary sweeping and direction adjustment of the dust, allowing it to better enter the dust collection area. This unique blowing hole design optimizes the blowing effect of the blowing chamber 21, improves the efficiency of dust removal from the phosphate rock surface, and more effectively guides the dust into the dust collection area, reducing dust escape and further enhancing the overall dust collection performance of the dust collection device.

[0049] Furthermore, the slope angle of the spray chamber 21 is 32°±0.5°.

[0050] The inclined angle of the jet-blowing chamber 21 is 32°±0.5°, which comprehensively considers factors such as the direction and velocity of the airflow after it is ejected, as well as its effect on the dust. This angle allows the airflow ejected from the large hole 212 and the small hole 211 to form an optimal combined force in a specific direction, maximizing the stripping and guiding effect of the airflow on the dust. The precise inclined angle ensures that the airflow ejected from the jet-blowing chamber 21 acts on the dust in the best possible way, improving the efficiency of dust stripping and collection, enhancing the working performance of the high-pressure jet-blowing module 2, and thus improving the dust collection effect and the accuracy of mineral processing of the entire dust collection device.

[0051] Furthermore, the suction port 43 is a rectangular port of 600mm×400mm, the vertical distance between the suction port 43 and the multi-micro-hole blowing module 3 is 24000mm, the high-pressure blowing module 2 is located 90mm directly above and behind the multi-micro-hole blowing module 3, and the horizontal distance between the high-pressure blowing module 2 and the multi-micro-hole blowing module 3 is 20mm.

[0052] The dust suction port 43 is a 600mm × 400mm rectangular opening. The vertical distance between the dust suction port 43 and the multi-micro-orifice jet cleaning module 3 is determined to be 24000mm, and the high-pressure jet cleaning module 2 is located 90mm directly above and behind the multi-micro-orifice jet cleaning module 3, with a horizontal distance of 20mm. This ensures a reasonable air pressure gradient and airflow field between the modules. The appropriately sized dust suction port 43 ensures sufficient suction to draw in dust. The precise positional relationship between the modules ensures that the positive pressure of the bottom multi-micro-orifice jet cleaning module 3 and the negative pressure of the top dust removal module 4 can effectively coordinate to form a stable vertical air pressure gradient, guiding the dust to migrate upwards smoothly. The reasonable size and positional parameter settings optimize the airflow distribution and air pressure environment of the entire dust collection area, improve dust collection efficiency, and ensure that dust can be efficiently drawn into the dust removal module 4 for processing within the dust collection area, reducing dust dispersion and improving the working environment and mineral processing accuracy.

[0053] Furthermore, the pressure limit of the compressed air storage tank 23 is 1.2 MPa, the negative pressure of the drum dust collector 41 is between -0.24 and -0.17 MPa, and the Roots blower 33 delivers high-pressure gas at 0.3-0.5 MPa.

[0054] The compressed air storage tank 23 has a pressure limit of 1.2 MPa, providing sufficient and stable compressed air pressure for the high-pressure jet cleaning module 2, ensuring its effective removal of dust from the phosphate rock surface. The negative pressure of the drum dust collector 41 is between -0.24 and -0.17 MPa, providing suitable suction to draw in and process the dust. The Roots blower 33 delivers high-pressure gas at 0.3-0.5 MPa, providing power to the multi-micro-hole jet cleaning module 3, enabling it to generate a uniform upward airflow that counteracts the gravity of the dust. These pressure parameters work together to form a stable air pressure system. Precise pressure parameter settings ensure that each module operates normally and efficiently, guaranteeing the stability and coordination of the entire dust collection device's air pressure system. This allows dust to be effectively removed, controlled, and collected under appropriate air pressure, improving the working efficiency and reliability of the dust collection device, while also helping to reduce energy consumption and equipment maintenance costs.

[0055] In operation, the photoelectric mineral processing post-concentration pressurized dust collection device of this invention first transports the phosphate rock to the discharge end via the conveyor belt 1, at which point the high-pressure jet cleaning module 2 begins operation. Dry compressed air from the compressed air storage tank 23 enters the jet cleaning chamber 21 through the jet cleaning pipe 22 after the high-pressure jet cleaning solenoid valve 221 is opened. Two rows of jet cleaning holes, one row of small holes 211 and the other of large holes 212, are set on the inclined surface of the jet cleaning chamber 21, spraying compressed air at an angle of 32°±0.5°. The large holes 212 spray a powerful airflow, primarily used to strip dust from the surface of the phosphate rock, while the airflow from the small holes 211 performs secondary sweeping and directional adjustment of the dust. The remaining jet cleaning force propels the stripped dust into the dust collection area.

[0056] Dust control stage: After the dust enters the dust collection area, the multi-micro-orifice jet cleaning module 3 comes into play. A Roots blower 33 delivers high-pressure gas at 0.3-0.5 MPa, which enters the multi-micro-orifice component 31 via the gas delivery pipe 32. Within the cuboid support structure 311, the gas is supplied centrally through four 25mm diameter jet pipes 313 evenly spaced along its length, and then uniformly transmitted to the multi-micro-orifice plate 312 via a single air inlet 314. The multi-micro-orifice plate 312 has 0.5mm orifices with a 1mm spacing, dispersing the gas and creating a uniform upward airflow. This airflow is opposite to the direction of dust gravity, counteracting the dust's weight and preventing it from shifting out of the dust collection area due to gravity, thus stabilizing the dust within the collection area.

[0057] Dust collection and treatment stage: The dust removal module 4 is located directly above the dust collection area, and the drum dust collector 41 provides a negative pressure between -0.24 and -0.17 MPa. Under the action of the vertical air pressure gradient formed by the positive pressure of the bottom multi-micro-orifice jet module 3 and the negative pressure of the top dust removal module 4, the dust in the dust collection area migrates upward. The suction port 43 is a rectangular opening of 600mm × 400mm, and its vertical distance from the multi-micro-orifice jet module 3 is 24000mm, ensuring sufficient suction to draw in the dust. The dust enters the drum dust collector 41 through the dust removal channel 42 for treatment, achieving effective dust collection. Throughout the process, the concentrate collection tank 5 and tailings collection tank 6 are sequentially arranged in front of the multi-micro-orifice jet module 3 to collect the concentrate and tailings after photoelectric separation, respectively, ensuring the smooth operation of the beneficiation process.

[0058] Finally, it should be noted that the electronic components in the high-pressure jet solenoid valve 221, drum dust collector 41, etc. in this embodiment are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order between each electrical component in the above working principle to complete the electrical connection. All of these are technologies known in the art.

[0059] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A photoelectric mineral processing post-concentration pressurized dust collection device, comprising a conveyor belt (1), characterized in that: The outer side of the discharge end of the conveyor belt (1) forms a dust collection area through a high-pressure jetting module (2), a multi-micro-hole jetting module (3), and a dust removal module (4). The high-pressure jetting module (2) is located at the lower part of the discharge end, the multi-micro-hole jetting module (3) is located directly below the dust collection area, and the dust removal module (4) is located directly above the dust collection area. A concentrate collection tank (5) and a tailings collection tank (6) are arranged in sequence in front of the multi-micro-hole jetting module (3).

2. The photoelectric mineral processing post-processing pressurized dust collection device according to claim 1, characterized in that: The multi-micro-hole jetting module (3) includes a multi-micro-hole component (31), which is connected to a Roots blower (33) via an air supply pipe (32). The high-pressure jetting module (2) includes a jetting chamber (21), which is connected to a compressed air storage tank (23) via a jetting pipe (22). The dust removal module (4) includes a drum dust collector (41), which has a dust removal channel (42) connected to its air inlet end, and a dust suction port (43) provided at the end of the dust removal channel (42).

3. The photoelectric mineral processing post-processing pressurized dust collection device according to claim 2, characterized in that: The multi-microporous component (31) includes a cuboid support (311), a multi-microporous plate (312) is installed on the top of the support (311), and a number of jet pipes (313) are installed at equal intervals along the length direction inside the support (311). The jet pipes (313) are supplied with air through an air inlet (314), and the outside of the air inlet (314) is connected to the air delivery pipe (32).

4. The photoelectric mineral processing post-processing pressurized dust collection device according to claim 3, characterized in that: The pore diameter of the multi-microperforated plate (312) is 0.5 mm, and the pore spacing is 1 mm.

5. The photoelectric mineral processing post-processing pressurized dust collection device according to claim 2, characterized in that: A high-pressure jet solenoid valve (221) is installed on the jet pipe (22).

6. The photoelectric mineral processing post-processing pressurized dust collection device according to claim 2, characterized in that: The top of the spray chamber (21) is set on an inclined surface, and two rows of spray holes are set on the inclined surface. The upper row is a row of small holes (211), and the lower row is a row of large holes (212).

7. The photoelectric mineral processing post-processing pressurized dust collection device according to claim 6, characterized in that: The angle of the inclined plane of the blow chamber (21) is 32°±0.5°.

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