Coal conveyor dust removal device

Abstract

This invention relates to the field of air pollution from coal conveying, and discloses a dust removal device for a coal conveyor, comprising a housing, adsorption plates symmetrically installed inside the housing, and a drive assembly installed outside the housing. Scraping structures driven by the drive assembly and used for cleaning the adsorption plates are symmetrically installed on both sides of the housing. This invention utilizes a scraper with an automatically adjustable angle. When descending, the scraper automatically adjusts to contact the adsorption plate to scrape away coal ash, and when ascending, it automatically adjusts to separate from the adsorption plate to avoid contact. This prevents residual coal ash that has not been completely scraped off and still has adsorption capacity from being pushed upwards during the ascent, thus avoiding secondary adhesion and clumping of coal ash on the adsorption plate, which would increase the difficulty of subsequent dust removal. Furthermore, it reduces the friction frequency between the scraper and the adsorption plate, ensuring that the scraper only contacts the adsorption plate during the scraping action, reducing frictional wear and slowing down the wear rate of the scraper.

Description

Technical Field

[0001] This invention relates to the field of coal conveying air pollution technology, and in particular to a dust removal device for a coal conveyor. Background Technology

[0002] The coal conveying system of a power plant uses conveyor belts as its core to transfer coal. Coal conveying and unloading processes easily generate a large amount of coal ash. Dust flying in the wind not only pollutes the atmospheric environment of the plant area and its surroundings, but also affects the operating efficiency of equipment and the health of personnel. In order to effectively control dust diffusion and improve the working environment, dust removal in the coal conveying process has become an indispensable and important part of power plant production.

[0003] For example, Chinese Patent Publication No. CN116832963B discloses a coal ash dust removal system based on a coal conveying and feeding mechanism, which relates to the field of coal ash dust removal technology. The system has two controllers, installed on the front and rear sides of the base respectively. Grooves are formed on the outer sides of both adsorption plates, and electrode tubes are installed in a linear array inside these grooves. This solves the problem that existing coal ash dust removal systems, lacking an effective electrostatic adsorption structure, easily disturb the coal ash by relying solely on airflow or adsorption, causing it to fly out and impact the surrounding environment. By cooperating with an extractor installed in the base, the system achieves a more thorough and comprehensive removal of dust generated during the coal conveying process, effectively improving the subsequent coal conveying efficiency. Furthermore, the thorough removal of dust effectively reduces pollution to the surrounding environment, further enhancing the overall practicality of the device.

[0004] This application cleans the conveyor belt and removes coal ash by installing electrostatic adsorption plates on both sides to trap the flying coal ash. A scraper then removes the coal ash from the plates. However, the adjustment of the contact between the scraper and the adsorption plate is inconvenient, and frequent friction during lifting and lowering can easily cause component wear. Furthermore, the scraper may touch the adsorption plate when moving upwards to reset, causing coal ash to be scraped back onto the plate, thus limiting its usability.

[0005] Therefore, it is necessary to provide a dust removal device for coal conveyors to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a dust removal device for a coal conveyor to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, a dust removal device for a coal conveyor is designed that uses a power system to drive the scraper to rise and adjust its angle simultaneously, and that automatically separates the scraper from the adsorption plate when it rises and resets.

[0008] Based on the above ideas, the present invention provides the following technical solution: a dust removal device for a coal conveyor, comprising a shell, an adsorption plate symmetrically installed inside the shell, and a drive assembly installed outside the shell. The shell has symmetrically installed scraping structures driven by the drive assembly for cleaning the adsorption plates on both sides. The scraping structure includes rolling elements disposed on the inner wall of the shell and scrapers fixed on the rolling elements. When the drive assembly is activated, the rolling elements drive the scrapers to align the bottom of the scrapers with the adsorption plates during descent and to separate the bottom of the scrapers from the adsorption plates during ascent.

[0009] As a further aspect of the present invention: the scraping structure further includes a base plate disposed on the outside of the housing and driven by a drive assembly, and telescopic rods symmetrically fixed at both ends of the base plate. Rolling elements are disposed on the movable ends of the two telescopic rods, and springs are installed inside the telescopic rods, which cause the rolling elements to have a tendency to move towards the adsorption plate.

[0010] As a further aspect of the present invention: the rolling element is a roller and the roller is rotatably connected to the movable end of the telescopic rod, and the scraper is fixedly connected between the two rollers.

[0011] As a further aspect of the present invention: a damping strip corresponding to the position of the roller is fixedly installed on the inner wall of the outer shell. When the roller is raised and lowered by the drive assembly, it contacts the damping strip and rotates.

[0012] As a further aspect of the present invention: a supporting block is fixedly installed on the surface of the scraper near the adsorption plate. The supporting block can abut against the adsorption plate during the upward movement of the scraper to lock the scraper, and the scraper separates from the adsorption plate when the supporting block abuts against the adsorption plate.

[0013] As a further aspect of the present invention: the length of the scraper in the horizontal direction is not shorter than the length of the adsorption plate in the horizontal direction, so that the scraper can fully cover the adsorption plate when it descends.

[0014] As a further aspect of the present invention: the rolling element is a gear, and a meshing element that meshes with the gear is vertically slidably installed on the inner wall of the outer shell. A sliding groove is provided on the inner wall of the outer shell to slide with the meshing element. The top and bottom walls of the sliding groove are jointly provided with a limiting element for limiting the meshing element. When the gear moves up or down, it will first roll on the meshing element, and then pull the meshing element away from the limiting element to move up, down, or horizontally.

[0015] As a further aspect of the present invention: the meshing component includes a toothed piece that meshes with the gear, a sliding block fixed on the surface of the toothed piece and slidably inserted into the sliding groove, and a limiting piece symmetrically fixed at the upper and lower ends of the sliding block to cooperate with the limiting component.

[0016] As a further aspect of the present invention: the limiting member is a magnet, and the limiting piece is a magnetic attractant that can be attracted by a magnet.

[0017] As a further aspect of the present invention: when the sliding block slides to the top or bottom wall of the sliding groove, the limiting piece is fixed by the limiting member. After the gear pulls the meshing member beyond the limiting threshold between the limiting piece and the limiting member, the limiting piece and the limiting member separate.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: By designing a scraper that can automatically adjust its angle, the scraper automatically adjusts to contact the adsorption plate to scrape off coal ash when descending, and automatically adjusts to separate from the adsorption plate to avoid contact when ascending. On the one hand, this avoids the scraper from scraping and pushing up residual coal ash that has not been completely scraped off from the surface of the adsorption plate and still has adsorption capacity during the ascending process, causing the coal ash to re-adhere to the adsorption plate and accumulate and clump, which would greatly increase the cleaning difficulty of subsequent dust removal operations and affect the overall dust removal efficiency. On the other hand, it can significantly reduce the friction frequency between the scraper and the adsorption plate, allowing the scraper to contact the adsorption plate only when performing the descending scraping action, reducing frictional wear between the two, effectively slowing down the wear rate of the scraper, and extending the service life of the scraper. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a perspective view of the overall structure of Embodiment 1 of the present invention; Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle; Figure 3 This is a three-dimensional schematic diagram of the scraping structure of the present invention; Figure 4 This is a side sectional view of the roller and scraper of the present invention; Figure 5 This is a perspective view of the overall structure of Embodiment 2 of the present invention; Figure 6 For the present invention Figure 4 Enlarged view at point B in the middle; Figure 7 This is a three-dimensional schematic diagram of the meshing component of the present invention; Figure 8 This is a side sectional view of the gear and meshing component of the present invention; Figure 9 This is a three-dimensional schematic diagram of the cleaning component of the present invention; Figure 10 This is a three-dimensional schematic diagram of the cleaning component of the present invention during its ascent; Figure 11 This is a three-dimensional schematic diagram of the cleaning component of the present invention during descent; Figure 12 This is a side sectional view of the cleaning component of the present invention.

[0020] In the diagram: 100, outer shell; 200, adsorption plate; 300, scraping structure; 301, base plate; 302, telescopic rod; 303, guide groove; 304, roller; 305, scraper; 306, damping strip; 307, supporting block; 308, meshing component; 3081, toothed plate; 3082, sliding block; 3083, limiting plate; 309, sliding groove; 3010, magnetic block; 3011, gear; 401, connecting arm; 402, first rotating shaft; 403, connecting plate; 404, cleaning scraper; 4041, rear plate; 4042, front plate; 4043, second rotating shaft; 500, drive assembly; 600, guide plate; 700, receiving box. Detailed Implementation

[0021] Example 1: Please see Figures 1 to 4 This invention provides a dust removal device for a coal conveyor, mainly used to automatically adjust the angle of the scraper 305 during lifting and lowering. When lowering, the bottom of the scraper 305 automatically adheres to the surface of the adsorption plate 200 and scrapes off coal ash. When rising, the bottom of the scraper 305 separates from the adsorption plate 200, preventing residual coal ash on the adsorption plate 200 from being pushed upwards, thus increasing the difficulty of dust removal. The device includes a housing 100, a conveyor belt disposed inside the housing 100 for transporting coal, and adsorption plates 200 fixedly installed on the inner walls of both sides of the housing 100 for adsorbing coal ash. The conveyor belt is located in the middle of the two adsorption plates 200, and the adsorption plates 200 use electrostatic adsorption to adsorb the coal ash flying during coal transport. It should be noted that the conveyor belt and adsorption plates 200 are existing mature technologies, and their specific principles and structures will not be elaborated here.

[0022] Correspondingly, such as Figure 1 As shown, the outer casing 100 is provided with a scraping structure 300 for scraping off coal ash. The scraping structure 300 can move up and down along the adsorption plate 200 to scrape off the coal ash. The outer casing 100 is symmetrically provided with drive components 500 that can drive the scraping structure 300 to move up and down. The top of the drive component 500 is connected to the scraping structure 300. The scraping structure 300 includes a scraper 305 movably disposed on the outside of the adsorption plate 200. The drive component 500 can drive the scraper 305 down to scrape off the coal ash on the surface of the adsorption plate 200, and can also drive the scraper 305 up to reset. During the reset process, the angle of the scraper 305 is automatically adjusted to not contact the adsorption plate 200.

[0023] Furthermore, such as Figures 2 to 4As shown, the scraping structure 300 also includes a substrate 301 driven by the driving component 500 and telescopic rods 302 symmetrically fixed at both ends of the substrate 301. The movable end of the telescopic rod 302 is rotatably connected to a rolling element, which is a roller 304. The scraper 305 is fixedly installed between the two rollers 304. The two ends of the scraper 305 are symmetrically fixed with abutment blocks 307 facing the adsorption plate 200.

[0024] Specifically, the movable end of the telescopic rod 302 has an L-shaped structure, and the scraper 305 has a long plate structure with a horizontal length greater than that of the adsorption plate 200. This is to ensure that the scraper 305 can fully cover the surface of the adsorption plate 200 during the descent process, thus guaranteeing the scraping effect.

[0025] In this embodiment, as Figure 2 As shown, damping strips 306 that contact the rollers 304 are symmetrically fixed on both sides of the adsorption plate 200 on the inner wall of the outer shell 100. The damping strips 306 provide sufficient friction for the rollers 304 to ensure that the rollers 304 can rotate during the lifting and lowering process.

[0026] Specifically, when the drive assembly 500 lowers the substrate 301 and the telescopic rod 302, the roller 304 rolls on the damping strip 306 to adjust the angle of the scraper 305 until the bottom of the scraper 305 abuts against the surface of the adsorption plate 200. At this point, the roller 304 is locked and can no longer rotate because the scraper 305 abuts against the adsorption plate 200. The scraper 305 then slides down the surface of the adsorption plate 200 to scrape off the coal ash. When the scraper 305 reaches the bottom, it needs to rise and reset. In the initial stage of rising, the roller 304 rolls upward along the damping strip 306 to adjust the angle of the scraper 305 in the opposite direction until the holding block 307 contacts the adsorption plate 200. At this point, the roller 304 is locked and the bottom of the scraper 305 separates from the adsorption plate 200. During the subsequent rising process, the scraper 305 does not contact the adsorption plate 200 at all, and therefore will not come into contact with the residual coal ash on the adsorption plate 200.

[0027] With the above design, when the scraping structure 300 descends, the scraper 305 can automatically adjust its angle to contact the adsorption plate 200. During the descent, the scraper 305 can scrape off the coal ash on the surface of the adsorption plate 200. When the scraping structure 300 rises and resets, the scraper 305 can automatically adjust its angle in the opposite direction to separate from the adsorption plate 200. During the ascent, the scraper 305 will not contact the adsorption plate 200, thus avoiding scraping coal ash onto the plate and reducing wear on the scraper 305.

[0028] In the above structure, such as Figure 2As shown, a spring (not shown in the figure) is fixedly connected between the fixed end and the movable end of the telescopic rod 302. The spring has a tendency to retract the telescopic rod 302. With the retraction of the telescopic rod 302, the roller 304 is pulled to keep in constant contact with the damping strip 306, avoiding the situation where the roller 304 and the damping strip 306 cannot make contact due to wear. This ensures that the roller 304 can roll on the damping strip 306 when it rises and falls. The damping strip 306 is made of wear-resistant materials, such as nylon or polyurethane, to avoid excessive wear when the damping strip 306 rubs against the roller 304. In addition, the upper and lower surfaces of the damping strip 306 are provided with anti-slip textures, while the remaining areas are smooth. This is to allow the roller 304 to cooperate with the anti-slip textures in the initial stages of descent and ascent, further increasing the friction and allowing the roller 304 to complete the rolling action smoothly.

[0029] Furthermore, such as Figure 1 and Figure 2 As shown, the drive assembly 500 includes a motor fixedly mounted on the outside of the housing 100 and a lead screw fixedly connected to the output shaft of the motor. The lead screw is threadedly connected to the base plate 301. In addition, a guide block (not shown in the figure) is fixed on the side of the telescopic rod 302 facing the housing 100. A guide groove 303 is provided on the surface of the housing 100 to slide with the guide block. When in use, the motor is started to drive the lead screw to rotate. The drive base plate 301 and the other accessories of the scraping structure 300 move along the guide groove 303. The lifting and lowering movement of the scraping structure 300 is realized by the forward and reverse rotation of the motor.

[0030] It should be noted that the drive assembly 500 can also be a power source with reciprocating lifting stroke, such as a cylinder or an electric push rod, as long as it can meet the up-and-down lifting of the base plate 301.

[0031] Reference Figure 1 In this embodiment, preferably, a guide plate 600 is fixedly installed on the inner wall of the outer shell 100 directly below the adsorption plate 200, and a receiving box 700 is fixedly installed inside the outer shell 100 below the guide plate 600. When the coal ash on the adsorption plate 200 is scraped off by the scraper 305, it will fall onto the guide plate 600 and eventually fall into the receiving box 700 along the guide plate 600, thus completing the collection of coal ash.

[0032] In use, coal is transported on a conveyor belt. After the adsorption plate 200 is energized, it generates static electricity to adsorb the flying coal ash. The operator can start the drive component 500, which drives the entire scraping structure 300 to descend. In the initial stage of descent, the roller 304 rolls on the damping strip 306, and the scraper 305 also rotates accordingly until the scraper 305 contacts the adsorption plate 200. At this time, the roller 304 is locked. The scraper 305 continues to descend, which can scrape off the coal ash adsorbed on the surface of the adsorption plate 200. The scraped coal ash falls onto the guide plate 600 and finally falls into the receiving box 700 for collection.

[0033] When the scraper 305 descends to the bottom, the motor reverses and drives the scraping structure 300 to rise and reset. In the initial stage of rising, the roller 304 rolls upward along the damping strip 306, and the scraper 305 flips accordingly, allowing its angle to be adjusted until the abutment block 307 on the scraper 305 contacts the adsorption plate 200. At this point, the roller 304 is locked and the scraper 305 no longer contacts the adsorption plate 200. As the entire scraping structure 300 continues to rise, the roller 304 slides on the damping strip 306 in a locked state until the scraping structure 300 rises to the top and stops, in preparation for the next descent scraping action.

[0034] In summary, by designing an automatically adjustable scraper 305, the scraper 305 automatically adjusts to contact the adsorption plate 200 to scrape away coal ash during descent, and automatically adjusts to separate from the adsorption plate 200 during ascent to avoid contact. On the one hand, this prevents the scraper 305 from scraping and pushing up residual coal ash that has not been completely scraped off and still has adsorption capacity on the surface of the adsorption plate 200 during the ascent, which would cause the coal ash to re-adhere to the adsorption plate 200, accumulate and clump, significantly increasing the cleaning difficulty of subsequent dust removal operations and affecting the overall dust removal efficiency. On the other hand, it can significantly reduce the friction frequency between the scraper 305 and the adsorption plate 200, allowing the scraper 305 to contact the adsorption plate 200 only when performing the descent scraping action, reducing frictional wear, effectively slowing down the wear rate of the scraper 305, and extending the service life of the scraper 305.

[0035] By setting up rollers 304, the rollers 304 rotate due to friction during the lifting and lowering process, driving the scraper 305 to adjust its angle. The rollers 304 link the lifting and lowering action and the angle adjustment action of the scraper 305 together, so that the angle adjustment action and the lifting action of the scraper 305 can be realized through the power system of the drive component 500, avoiding redundancy in power configuration and design logic.

[0036] Meanwhile, the telescopic rod 302 can pull the roller 304 closer to the damping strip 306, ensuring that the roller 304 and the damping strip 306 are always in close contact. This ensures that there is sufficient friction between the roller 304 and the damping strip 306 when the roller 304 descends, thus enabling the roller 304 to rotate and the scraper 305 to be adjusted in angle. The anti-slip texture on the upper and lower surfaces of the damping strip 306 is also to further enhance the friction between the roller 304 and the damping strip 306, allowing the roller 304 to roll smoothly.

[0037] Example 2: Please see Figures 1 to 8 Based on Embodiment 1, considering that the angle adjustment of the scraper 305 relies entirely on the friction between the damping strip 306 and the roller 304, frequent friction between the damping strip 306 and the roller 304 not only leads to severe wear on both but also gradually reduces the friction, affecting the normal rolling of the roller 304 and causing the angle adjustment function of the scraper 305 to fail. Therefore, the roller 304 is replaced with a gear 3011, and the damping strip 306 is replaced with a meshing member 308 that can move up and down along the outer casing 100. The meshing force between the gear 3011 and the meshing member 308 replaces the friction between the roller 304 and the damping strip 306. On the one hand, the stronger meshing force ensures that the roller 304 rolls along the meshing member 308; on the other hand, the wear on the gear 3011 and the meshing member 308 is also lower, making the angle adjustment function of the scraper 305 less prone to failure.

[0038] Furthermore, such as Figure 6 and Figure 7 As shown, a sliding groove 309 is vertically opened inside the outer casing 100 for the meshing member 308 to move up and down. The top and bottom walls of the sliding groove 309 are fixed with limiting members for limiting the meshing member 308. The meshing member 308 includes a toothed piece 3081 that meshes with the gear 3011, a sliding block 3082 that is fixed on the toothed piece 3081 and slides in cooperation with the sliding groove 309, and limiting pieces 3083 that are fixed at the upper and lower ends of the sliding block 3082 for cooperating with the limiting members. When gear 3011 descends, it can roll downwards on toothed plate 3081 through the limiting member. When scraper 305 contacts adsorption plate 200, gear 3011 is locked. At this time, as gear 3011 continues to descend, it will drive meshing member 308 to descend together. When gear 3011 rises, it can roll upwards on toothed plate 3081 through the limiting member. When holding block 307 contacts adsorption plate 200, gear 3011 is locked. At this time, scraper 305 no longer contacts adsorption plate 200. As gear 3011 continues to rise, it will drive meshing member 308 to rise together.

[0039] Among them, such as Figure 7As shown, the sliding block 3082 is fixed to the back of the toothed piece 3081 and is T-shaped when viewed from above. The T-shaped sliding block 3082 can move stably inside the sliding groove 309 and is not easy to fall off from the sliding groove 309.

[0040] In the above structure, such as Figure 8 As shown, the limiting component is a magnetic block 3010. Magnetic blocks 3010 are fixed to both the top and bottom walls of the sliding groove 309 (the magnetic block 3010 on the bottom wall is not shown in the figure). The limiting plate 3083 is made of magnetic material and can be attracted to the magnetic block 3010. When the sliding block 3082 is at the top of the sliding groove 309, the limiting plate 3083 at the top of the sliding block 3082 will be attracted and fixed by the magnetic block 3010 above it. When the gear 3011 descends from its highest point, because the meshing member 308 is attracted and cannot move, the gear 3011 will first roll downwards on the meshing member 308. When the scraper 305 contacts the adsorption plate 200, causing the gear 3011 to lock, the gear 3011 can no longer roll. At this point, if the gear 3011 descends further, it will forcibly pull the limiting component. When the plate 3083 separates from the magnetic block 3010, the entire scraping structure 300 can descend smoothly. When the scraping structure 300 moves to the bottom, the sliding block 3082 will move to the bottom of the sliding groove 309 simultaneously. At this time, the limiting plate 3083 at the bottom of the sliding block 3082 will attract the magnetic block 3010 below. When the gear 3011 rises, it cannot rise immediately because the meshing part 308 is attracted. The gear 3011 will roll upward on the meshing part 308. When it rolls to the point where the holding block 307 contacts the adsorption plate 200, the gear 3011 will be locked and cannot rotate. At this time, if the gear 3011 continues to rise, it will forcibly pull the limiting plate 3083 and the magnetic block 3010 to separate, allowing the entire scraping structure 300 to rise smoothly.

[0041] In use, the scraping structure 300 descends to scrape away the coal ash on the surface of the adsorption plate 200. The gear 3011 first rolls on the fixed meshing member 308. After the angle of the scraper 305 is adjusted, the gear 3011 is locked and pulls the meshing member 308 down together. The entire scraping structure 300 scrapes away the coal ash on the surface of the adsorption plate 200 during the descent. When the scraping structure 300 descends to the bottom and needs to rise and reset, the meshing member 308 is attracted again by the magnetic block 3010. When the gear 3011 begins to rise, it first rolls on the fixed meshing member 308. After the angle of the scraper 305 is adjusted in the opposite direction, the gear 3011 is locked and pulls the meshing member 308 up together. The entire scraping structure 300 completes the entire rising action without the scraper 305 contacting the adsorption plate 200.

[0042] In summary, through the cooperation of structures such as gear 3011, toothed plate 3081, sliding block 3082, and sliding groove 309, the scraper 305 first achieves angle adjustment, and then pulls the meshing part 308 to move up and down. The stable meshing force between gear 3011 and meshing part 308 provides mechanical constraints on the action sequence of gear 3011, ensuring that it always follows the sequence of "rolling first, then translation" during lifting and lowering, guaranteeing the stable realization of the core function of the scraping structure 300 and avoiding equipment failure due to operational errors. Furthermore, the stable meshing between gear 3011 and meshing part 308 allows for more uniform force transmission, reducing local stress concentration at the contact points, effectively reducing friction loss and wear during meshing, slowing down the aging of components, and extending the service life of the scraping structure 300.

[0043] When gear 3011 rolls downward along the toothed plate 3081, scraper 305 abuts against adsorption plate 200 to lock gear 3011, preventing gear 3011 from disengaging from the lower end of toothed plate 3081; when gear 3011 rolls upward along toothed plate 3081, abutment block 307 contacts adsorption plate 200 to lock gear 3011, preventing gear 3011 from disengaging from the upper end of toothed plate 3081. This bidirectional limiting design precisely limits the rolling stroke of gear 3011 on toothed plate 3081, keeping it always within the effective meshing range of toothed plate 3081. Structurally, it eliminates the possibility of gear 3011 disengaging beyond its travel range, continuously ensuring the stability of the meshing relationship between gear 3011 and meshing component 308, ensuring smooth force transmission between the two, and providing reliable mechanical constraints for the stable operation of the entire scraping structure 300.

[0044] Example 3: Please see Figures 1 to 12 Based on Embodiment 2, considering that as the scraper 305 continuously scrapes away the coal ash from the surface of the adsorption plate 200, the coal ash, which has a certain degree of adhesion, will inevitably adhere to the scraper 305. As more and more coal ash adheres to the scraper 305, its scraping effect on the adsorption plate 200 will gradually decrease. Therefore, an automatically adjustable cleaning structure is provided on the outside of the scraper 305. Whenever the scraper 305 rises and resets, the cleaning structure can automatically remove the coal ash adhering to the scraper 305, keeping the scraper 305 clean and thus ensuring the scraping effect of the scraper 305 on the adsorption plate 200.

[0045] Furthermore, such as Figures 9 to 12As shown, the cleaning structure includes connecting arms 401 symmetrically fixed on the telescopic rods 302 on both sides, a first rotating shaft 402 rotatably connected between the two connecting arms 401, and a connecting plate 403 rotatably connected to the first rotating shaft 402 and facing the scraper 305. A first torsion spring (not shown in the figure) is sleeved on the outer side of the first rotating shaft 402. The first torsion spring has the tendency to rotate the connecting plate 403 toward the scraper 305. A cleaning scraper 404 is telescopically connected to the bottom end of the connecting plate 403. The cleaning scraper 404 is perpendicular to the connecting plate 403 and its inner end is slidably inserted into the interior of the connecting plate 403. One end of the cleaning scraper 404 is fixedly connected to the interior of the connecting plate 403 with a spring (not shown in the figure), and the other end is in contact with the scraper 305.

[0046] In the above structure, the spring has the tendency to push the cleaning scraper 404 outward. When the scraper 305 contacts the adsorption plate 200, the cleaning scraper 404 and the surface of the scraper 305 abut against each other. When the scraping structure 300 rises and drives the scraper 305 to rotate toward the connecting plate 403, the outer end of the cleaning scraper 404 will scrape the surface of the scraper 305 to remove the coal ash attached to the surface of the scraper 305. During this process, the cleaning scraper 404 is constantly pushed by the scraper 305, forcing the connecting plate 403 to rotate with the scraper 305. When the scraper 305 rotates to the point where its bottom end is flush with the cleaning scraper 404, the cleaning scraper 404 is pushed out under the action of the spring, and its outer end can just remove the coal ash attached to the bottom end of the scraper 305. At this time, the connecting plate 403 is just in contact with the scraper 305 to ensure its own stability.

[0047] In the above structure, such as Figure 12 As shown, the cleaning scraper 404 includes a rear plate 4041 slidably inserted into the connecting plate 403, a second rotating shaft 4043 rotatably connected to the end of the rear plate 4041, and a front plate 4042 rotatably connected to the second rotating shaft 4043. A second torsion spring is sleeved on the outer surface of the second rotating shaft 4043. The second torsion spring has the tendency to rotate the front plate 4042 upward. The front plate 4042 can be folded downward based on the second rotating shaft 4043, but cannot be folded upward. When the scraper 305 starts to descend from the highest point, the bottom end of the scraper 305 rotates towards the adsorption plate 200. At this time, the front plate 4042 will be pushed downward by the bottom end of the scraper 305 to avoid the rotation of the scraper 305. As the scraper 305 continues to rotate, the connecting plate 403 is also rotated towards the scraper 305 by the action of the first torsion spring. The end of the cleaning scraper 404 abuts against the surface of the scraper 305 again to perform the next cleaning.

[0048] In use, when the scraper 305 descends to scrape away the coal ash on the adsorption plate 200, one end of the cleaning scraper 404 is always pressed against the side of the scraper 305 facing the connecting plate 403. When the scraper 305 rises and the angle is adjusted simultaneously, it will rotate towards the connecting plate 403 and push the connecting plate 403 to rotate together. During this process, the cleaning scraper 404 will remove the coal ash from the surface of the scraper 305 from top to bottom. When the angle of the scraper 305 is adjusted and it moves upward, the end of the cleaning scraper 404 is exactly flush with the bottom of the scraper 305. The cleaning scraper 404 is no longer pressed by the scraper 305 and pops outward under the action of the spring. The outer end of the cleaning scraper 404 can remove the dust at the bottom of the scraper 305, thus achieving coal ash cleaning. When the scraper 305 begins to descend again, it rotates toward the adsorption plate 200. The front plate 4042 on the cleaning scraper 404 rotates to avoid it based on the second rotating shaft 4043. As the scraper 305 rotates, the connecting plate 403 resets toward the scraper 305 under the action of the first torsion spring. The end of the cleaning scraper 404 abuts against the surface of the scraper 305 again to prepare for the next cleaning action.

[0049] Compared to Embodiment 2, through the cooperation of the connecting arm 401, the first rotating shaft 402, the connecting plate 403 and the cleaning scraper 404, when the scraper 305 rises, the cleaning scraper 404 removes the coal ash on its surface and removes the accumulated ash at its bottom end to keep it clean; when the scraper 305 falls, the connecting plate 403 automatically resets by the first torsion spring, so that the cleaning scraper 404 re-adheres to the surface of the scraper 305. This design enables the coordinated operation and functional integration of the scraper 305 and the cleaning scraper 404: when the scraper 305 is performing coal ash scraping, the cleaning scraper 404 is always held against the surface of the scraper 305 and is in a standby cleaning state throughout the process, without interfering with the core scraping action of the scraper 305; when the scraper 305 finishes scraping and begins to rise, the cleaning scraper 404 immediately starts the cleaning function to thoroughly scrape the coal ash attached to the surface and bottom of the scraper 305, realizing the alternating cooperation of the scraping and cleaning functions of the two, keeping the scraper 305 in a clean state at all times, and ensuring the efficiency and effectiveness of its subsequent scraping operations.

[0050] The design of the front plate 4042 on the cleaning scraper 404 allows the outer end of the cleaning scraper 404 to be folded, providing a clearance for the rotation of the scraper 305 and preventing mechanical interference between the scraper 305 and the cleaning scraper 404 when the scraper 305 rotates. This ensures that the entire cleaning structure will not interfere with the normal use of the scraper 305 and guarantees that the scraper 305 can perform the function of scraping coal ash off the adsorption plate 200.

Claims

1. A dust removal device for a coal conveyor, comprising a housing (100), adsorption plates (200) symmetrically installed inside the housing (100), and a drive assembly (500) installed outside the housing (100), characterized in that, The outer casing (100) is symmetrically equipped with scraping structures (300) driven by a drive assembly (500) and used for cleaning the adsorption plate (200). The scraping structure (300) includes a rolling element disposed on the inner wall of the outer casing (100) and a scraper (305) fixed on the rolling element. When the drive assembly (500) is activated, the rolling element drives the scraper (305) to come into contact with the adsorption plate (200) when it descends, and to separate the bottom of the scraper (305) from the adsorption plate (200) when it rises.

2. The dust removal device for a coal conveyor according to claim 1, characterized in that, The scraping structure (300) also includes a base plate (301) disposed on the outside of the housing (100) and driven by the drive assembly (500) and telescopic rods (302) symmetrically fixed at both ends of the base plate (301). Rolling elements are disposed on the movable ends of the two telescopic rods (302). Springs are installed inside the telescopic rods (302), and the springs cause the rolling elements to have a tendency to move towards the adsorption plate (200).

3. The dust removal device for a coal conveyor according to claim 2, characterized in that, The rolling element is a roller (304) and the roller (304) is rotatably connected to the movable end of the telescopic rod (302). The scraper (305) is fixedly connected between the two rollers (304).

4. The dust removal device for a coal conveyor according to claim 3, characterized in that, The inner wall of the housing (100) is fixedly installed with a damping strip (306) corresponding to the position of the roller (304). When the roller (304) is raised and lowered by the drive assembly (500), it contacts the damping strip (306) and rotates.

5. The dust removal device for a coal conveyor according to claim 1, characterized in that, A retaining block (307) is fixedly installed on the surface of the scraper (305) near the adsorption plate (200). The retaining block (307) can abut against the adsorption plate (200) during the upward movement of the scraper (305) to lock the scraper (305). When the retaining block (307) abuts against the adsorption plate (200), the scraper (305) separates from the adsorption plate (200).

6. The dust removal device for a coal conveyor according to claim 1, characterized in that, The length of the scraper (305) in the horizontal direction is not shorter than the length of the adsorption plate (200) in the horizontal direction, and the scraper (305) can fully cover the adsorption plate (200) when it descends.

7. The dust removal device for a coal conveyor according to claim 2, characterized in that, The rolling element is a gear (3011). The inner wall of the outer shell (100) is vertically slidably mounted with a meshing element (308) that meshes with the gear (3011). The inner wall of the outer shell (100) is provided with a sliding groove (309) that slides with the meshing element (308). The top and bottom walls of the sliding groove (309) are provided with a limiting element for limiting the meshing element (308). When the gear (3011) moves up and down, it will first roll on the meshing element (308) and then pull the meshing element (308) away from the limiting element to move up, down and translate.

8. The dust removal device for a coal conveyor according to claim 7, characterized in that, The meshing component (308) includes a toothed piece (3081) that meshes with the gear (3011), a sliding block (3082) that is fixed on the surface of the toothed piece (3081) and slidably inserted into the sliding groove (309), and a limiting piece (3083) that is symmetrically fixed at the upper and lower ends of the sliding block (3082) to cooperate with the limiting component.

9. The dust removal device for a coal conveyor according to claim 8, characterized in that, The limiting member is a magnet (3010), and the limiting piece (3083) is a magnetic attractant that can be attracted by the magnet (3010).

10. The dust removal device for a coal conveyor according to claim 9, characterized in that, When the sliding block (3082) slides to the top or bottom wall of the sliding groove (309), the limiting piece (3083) will be fixed by the limiting member. After the gear (3011) pulls the meshing member (308) beyond the limiting threshold between the limiting piece (3083) and the limiting member, the limiting piece (3083) and the limiting member will separate.

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