Intelligent dust removal device for coal storage plant and dust removal method thereof

Abstract

This invention discloses an intelligent dust removal device and method for coal storage plants. The invention relates to the field of dust pollution control technology, including a coal hopper and a dust collection pipeline. It further includes: a rubber tube installed outside the bottom of the coal hopper to extend the bottom of the hopper and lower the coal outlet position; an ash-blocking hood fitted over the rubber tube to extend the bottom of the rubber tube; and an ash-blocking membrane connected at the top between the rubber tube and the ash-blocking hood. By installing a rubber tube and an ash-blocking hood at the bottom of the coal hopper, the high coal outlet of the hopper is significantly lowered. During coal feeding, the distance between the bottom and the hopper can be minimized, thereby reducing dust. The larger outer area of ​​the ash-blocking hood can cover the dust emanating from the bottom of the rubber tube, while the ash-blocking membrane at the top ensures that dust only diffuses inside the ash-blocking hood. Combined with the dust extraction from the dust collection pipeline, a good dust removal effect is achieved. The extracted dust is then introduced into a spray dust suppression device for spray dust suppression.

Description

Technical Field

[0001] This invention relates to the field of dust pollution control technology, specifically to an intelligent dust removal device and method for coal storage plants. Background Technology

[0002] In the daily operation of coal storage plants, the feeding hopper is a key node in coal transfer. Due to the large drop and strong impact of the material during the coal feeding process, a large amount of coal dust particles are easily dispersed under the turbulence of airflow, forming dust pollution. The dust problem is more prominent, especially in dry seasons or when the wind is strong. It not only wastes coal resources (according to statistics, dust loss can reach 0.5%-2% of the total reserves), but also seriously pollutes the surrounding air environment, causing PM2.5 and PM10 concentrations to exceed the standards, endangering the respiratory health of on-site workers. At the same time, coal dust accumulation may also cause safety hazards such as equipment wear and electrical short circuits.

[0003] When unloading, loading, and transporting coal in a coal storage yard, dry coal easily generates dust. Commonly used dust collection devices or spray dust suppression devices, such as bag filters or duct sprayers, are installed nearby. However, the former is suitable for collecting and removing dust from flue gas emitted from a closed container, while the latter uses spraying to suppress dust over a large area. This method has drawbacks when used with coal feeding hoppers. When coal is discharged from the bottom of the hopper, a certain height difference causes a large amount of dust to be stirred up when it lands. This dust is exposed and diffuse, making it difficult for bag filters to collect effectively. Dust duct sprayers may also have blind spots due to equipment obstructions, making it difficult to suppress dust comprehensively. Furthermore, large-scale dust suppression is also wasteful of water, which can lead to water accumulation on the site.

[0004] A dust removal device for a tipper unloading coal, disclosed in publication number CN120172135A, forms a sealed space by setting up a dust cover to completely enclose the tipper's unloading operation, preventing dust generated during unloading from spreading outwards and ensuring that all dust is collected inside the dust cover. A spray system generates mist to cause dust particles to agglomerate and settle into the coal bunker by gravity, achieving the effect of suppressing dust dead zones and preventing dust escape. However, this device requires a large dust cover to completely cover the tipper, which is costly for dust suppression of large equipment and also inconvenient for operators to operate from inside. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an intelligent dust removal device and method for coal storage plants, solving the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an intelligent dust removal device for coal storage plants, comprising a coal hopper and a dust suction pipe, and further comprising: A rubber tube is installed on the outside of the bottom end of the coal hopper to extend the bottom end of the coal hopper and lower the position of the coal outlet. Dust shield, fitted over the outside of the rubber tube, is used to extend the bottom end of the rubber tube; The winding structure is installed on the lower coal hopper, and the four sides of the winding structure are fixedly connected with lifting ropes. The winding structure controls the raising and lowering of the ash baffle by synchronously winding and unwinding the four side lifting ropes, thereby adjusting the bottom height of the ash baffle according to the change of the bottom coal pile height. Dust-blocking membrane, connected at the top between the rubber tube and the dust-blocking cover; The dust suction pipe is installed at the bottom of the winding structure, and the dust suction pipe is provided with multiple air inlets that extend to the bottom of the dust-blocking membrane. One end of the dust suction pipe is connected to a spray dust suppression device through a dust suction hose. An infrared ranging sensor is installed on top of the ash-blocking cover to monitor changes in the height of the coal pile at the bottom of the ash-blocking cover.

[0007] Preferably, the winding structure includes four sets of winding mechanisms and a right-angle transmission structure. The four sets of winding mechanisms form the four sides of a quadrilateral, and the four sets of right-angle transmission structures form the four right angles of the quadrilateral. The right-angle transmission structure is used to transmit the driving force of the winding mechanisms on adjacent sides at 90°. The winding mechanisms and the right-angle transmission structures are engaged and fixed by plugging, and the winding mechanisms are suspended on the lower coal hopper by the hanging rope at the top.

[0008] Preferably, the reel mechanism includes: The upper and lower cylinders are arranged in pairs, with one side connected by a hinge and the other side fastened by bolts. The hanging rope is fixedly connected to the middle of the top of the upper cylinder. The rotating shaft is rotatably connected between the upper and lower cylinders via bearings. Both ends of the rotating shaft are provided with prism holes, and the middle section of the rotating shaft is set as a winding section for fixing and winding the lifting rope.

[0009] Preferably, the right-angle transmission structure includes: The upper cover and the lower cover are provided in pairs and are fixedly connected by a bolt that passes through the center. The bottom center of the upper cover is provided with a limiting block, and the center of the lower cover is provided with a limiting groove that intersects with the limiting block. The prism shaft is rotatably connected to both ends of the upper and lower covers of the third set via bearings, and the prism shaft is adapted to be inserted into the prism hole. The prism shaft is rotatably connected to one end of the upper and lower covers of the fourth set, and a motor is fixedly connected to the other end. Each pair of prism shafts and the opposite ends of the prism shafts and the motor are driven by a bevel gear.

[0010] Preferably, positioning hooks are fixedly connected around the bottom discharge port of the lower coal hopper. The rubber tube and the hanging rope are both hung on the positioning hooks. The rubber tube includes a rubber curtain. After the rubber curtain is rolled up, the two ends are fixedly connected by I-beam clips. Hanging rings are fixedly connected through the top of the four sides of the rubber curtain. The hanging rings are used to fit the positioning hooks. A sealing strip is glued to the top of the inner side of the rubber curtain.

[0011] Preferably, the vacuum suction pipe includes: A ring tube is arranged around the rubber tube and is fixed to a hook fixedly connected to the bottom of the winding structure; A sleeve is fitted around the four sides of a ring tube, and the surface of the ring tube has through holes that communicate with the inner cavity of the sleeve. A sealing ring is embedded inside both ends of the tube sleeve, and a positioning groove adapted to the sealing ring is opened on the surface of the annular tube and on both sides of the through hole. The bent tube is fixedly connected to the side of the rubber tube, and one end passes through the dust-blocking membrane and is locked by a screw sleeve. One end of the ring pipe is closed, and the other end is connected to a dust suction hose. The other end of the dust suction hose is connected to a bag filter via an air pump. The section of the dust suction hose near the dust suction pipe is fixed to the surface of the lower coal hopper by a positioning hook.

[0012] Preferably, a section of the suction hose near the suction pipe is fixed to the surface of the lower coal hopper by a positioning hook; The surface of the infrared ranging sensor is fixed with a fixing plate by screwing a nut. One side of the fixing plate is formed into a β-type sleeve for elastically engaging with the top of the dust cover. A vibration sensor is fixedly connected to the side of the coal hopper. The vibration sensor is used to detect the vibration of the coal hopper when coal is fed in. Both the infrared ranging sensor and the vibration sensor are connected to the control system via data lines.

[0013] Preferably, the top of the ash-blocking cover has evenly spaced curtain grooves, making the bottom of the ash-blocking cover resemble a leather curtain. At least two layers of ash-scraping frames are fixedly connected to the leather curtain. The outer bottom of the ash-scraping frames is attached to the inner wall of the ash-blocking cover to open the ash-blocking cover and to scrape off the coal ash adhering to the inner wall of the ash-blocking cover when the ash-blocking cover is raised and lowered.

[0014] Preferably, the scraper includes: A retaining ring is fitted around the outside of the leather tube and secured by fixing bolts. The scraper fits the inner wall of the dust cover, and the cross-section of the scraper is an isosceles trapezoid. The diagonal braces are provided in multiple sets for fixing the connecting rings and scrapers.

[0015] Preferably, the dust suppression spraying device includes a spray chamber, a spray nozzle is fixedly connected to the top center of the spray chamber, the spray nozzle is used to introduce high-pressure water flow and atomize it downwards, a drain valve is fixedly connected to the bottom of the spray chamber, an air duct is fixedly connected through the side of the spray chamber, and one end of the air duct inside the spray chamber extends to the center of the spray chamber, an impeller exhaust fan is fixedly connected to the side of the spray chamber, the air outlet of the impeller exhaust fan is connected to the outer end of the air duct, and the air inlet of the impeller exhaust fan is connected to the dust suction hose.

[0016] This invention also discloses a dust removal method for an intelligent dust removal device used in coal storage plants, comprising the following steps: Step 1: Initially, the ash baffle is lowered to the bottom, and the coal is put into the lower coal hopper. The coal is concentrated and discharged from the bottom of the lower coal hopper, and then discharged from the bottom through the rubber tube, and accumulates on the car body below. Step 2: The infrared ranging sensor detects the height of the coal pile below in real time and feeds the data back to the control system. The control system controls the winding structure to wind up the hoisting rope based on the coal pile height data, thereby raising the ash baffle and keeping the distance value detected by the infrared ranging sensor within the specified upper limit, that is, keeping the bottom of the ash baffle close to the surface of the coal pile. Step 3: During the coal feeding process, the dust at the bottom of the drum is trapped inside the dust baffle and rises upward. The spray dust suppression device is activated to draw air from the dust suction pipe, thereby extracting the dust rising inside the dust baffle and discharging it into the spray dust suppression device for spray dust suppression treatment.

[0017] This invention provides an intelligent dust removal device and method for coal storage plants. Compared with existing technologies, it has the following advantages: 1. This intelligent dust removal device for coal storage plants significantly lowers the discharge opening of the coal hopper by adding a rubber drum and ash baffle to the bottom of the hopper. This minimizes the distance between the bottom of the hopper and the hopper during coal feeding, thus reducing dust. The large outer ash baffle effectively traps dust from the bottom of the rubber drum, while the top ash baffle membrane ensures dust only diffuses inside the baffle. Combined with the dust extraction system, this achieves excellent dust removal. The extracted dust is then sprayed into a dust suppression system and discharged from the bottom. Compared to direct spraying, this avoids water accumulation on the ground. One set of dust suppression systems can connect to multiple coal hoppers for collective dust removal. Furthermore, the ash baffle is designed to be height-adjustable, and an infrared ranging sensor is used to intelligently control its height. Vibration sensors installed on the coal hopper detect continuous vibrations to indicate coal feeding and activate the system, thus achieving intelligent system control.

[0018] 2. This intelligent dust removal device for coal storage plants can achieve lifting and lowering control of the ash baffle by installing a winding structure and hoisting ropes. The winding structure adopts a modular design, which is easy to install on the outside of the drum and has a certain error adaptation range, improving installation adaptability. By utilizing the combination of the drum mechanism and the right-angle transmission structure, only one motor is needed to drive the rotation of the four shafts at the same time, and the hoisting ropes on all four sides can be wound up at the same time, making it convenient to use.

[0019] 3. This intelligent dust removal device for coal storage plants allows for quick installation of the dust collection pipe by snapping it into a flexible hook. The dust collection pipe passes through the ash-blocking membrane through multiple distributed bends, enabling simultaneous dust extraction from multiple points on all four sides. Furthermore, the dust collection points are located at a high point on the ash-blocking membrane, resulting in excellent dust collection performance.

[0020] 4. This intelligent dust removal device for coal storage plants uses a scraper frame installed on the ash baffle. The scraper frame expands the ash baffle, keeping it as coaxial as possible with the rubber cylinder, ensuring consistent spacing on each side for even dust coverage. Simultaneously, the bottom of the scraper frame adheres to the inner wall of the ash baffle, scraping away dust adhering to the inner wall during the ash baffle's raising and lowering process. This prevents the long-term accumulation of coal dust, which would increase the weight of the ash baffle and makes it convenient to use. Attached Figure Description

[0021] Figure 1 This is the assembly drawing of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of a local structure in the image; Figure 4 This is a perspective view of the leather tube of the present invention; Figure 5 This is a schematic diagram of the winding structure of the present invention; Figure 6 This is an exploded view of the reel mechanism of the present invention; Figure 7 Explosion of the right-angle transmission structure of the present invention Figure 1 ; Figure 8 Explosion of the right-angle transmission structure of the present invention Figure 2 ; Figure 9 This is a partial exploded view of the dust extraction pipe of the present invention; Figure 10 This is a schematic diagram of the infrared ranging sensor and the fixed plate of the present invention; Figure 11 This is a schematic diagram of the installation of the scraper frame of the present invention; Figure 12 This is a schematic diagram of the structure of the ash scraper frame of the present invention; Figure 13 This is a schematic diagram of the structure of the dust suppression spray device of the present invention.

[0022] In the diagram: 1-lower coal hopper, 2-leather drum, 21-leather curtain, 22-I-beam clamp, 23-hanging ring, 24-sealing strip; 3-Dust shield, 31-Curtain groove, 4-Dust shield film, 5-Rewinding structure, 51-Roller mechanism, 511-Upper drum, 512-Lower drum, 513-Hanging rope, 514-Rotating shaft, 515-Rewinding section, 516-Pyramidal hole, 517-Hinge; 52-Right-angle transmission structure, 521-Upper cover, 522-Lower cover, 523-Pyramidal shaft, 524-Bevel gear, 525-Limiting block, 526-Limiting groove, 527-Motor; 6-Hanging rope, 7-Dust suction pipe, 71-Ring pipe, 72-Pipe sleeve, 73-Bend pipe, 74-Threaded sleeve, 75-Sealing ring, 76-Through hole, 77-Positioning groove; 8-Scraper frame, 81-Fixing ring, 82-Fixing bolt, 83-Diagonal bar, 84-Scraper blade; 9-Dust suction hose, 10-Positioning hook, 11-Infrared distance sensor, 111-Fixing plate, 12-Hanging rod, 13-Vibration sensor, 14-Hook, 15-Spray dust suppression device, 151-Spray chamber, 152-Impeller exhaust fan, 153-Air duct, 154-Spray nozzle, 155-Drain valve. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] See Figures 1-13 This invention discloses an intelligent dust removal device for coal storage plants and provides the following four technical solutions: The first implementation includes a coal hopper 1 and a dust suction pipe 7, and also includes: The rubber tube 2 is installed on the outside of the bottom end of the lower coal hopper 1 to extend the bottom end of the lower coal hopper 1 and lower the position of the coal outlet. Dust shield 3 is fitted over the outside of the rubber tube 2 to extend the bottom end of the rubber tube 2; The winding structure 5 is installed on the lower coal hopper 1, and the four sides of the winding structure 5 are fixedly connected with the lifting ropes 6. The winding structure 5 controls the lifting of the ash baffle 3 by synchronously winding and unwinding the four sides of the lifting ropes 6, and thus adjusts the bottom height of the ash baffle 3 according to the change of the bottom coal pile height. Dust-blocking membrane 4 is connected to the top between the leather tube 2 and the dust-blocking cover 3; The dust suction pipe 7 is installed at the bottom of the winding structure 5, and has multiple air inlets extending to the bottom of the dust-blocking membrane 4. One end of the dust suction pipe 7 is connected to a dust spraying device 15 via a dust suction hose 9. The section of the dust suction hose 9 near the dust suction pipe 7 is fixed to the surface of the lower coal hopper 1 by a positioning hook 10. The dust spraying device 15 includes a spray chamber 151, and a spray nozzle 154 is fixedly connected to the top center of the spray chamber 151. The spray nozzle 154 is used to introduce high-pressure water and atomize it downwards. The sprayed water mist is dispersed downwards in a cone shape to completely cover the dust. A drain valve 155 is fixedly connected to the bottom of the spray chamber 151. A duct 153 is fixedly connected through the side of the spray chamber 151, and one end of the duct 153 inside the spray chamber 151 extends to the center of the spray chamber 151. An impeller exhaust fan 152 is fixedly connected to the side of the spray chamber 151, and the air outlet of the impeller exhaust fan 152 is connected to the outer end of the duct 153. The air inlet of the impeller exhaust fan 152 is connected to the dust suction hose 9. The impeller exhaust fan 152 adopts a straight blade impeller. The air inlet and outlet are tangentially connected to the outer shell of the impeller exhaust fan 152. The straight blade impeller drives the airflow to rotate and then throws it out tangentially. Compared with the fan blades drawing air, it can reduce the frontal collision and wear of dust particles with the blades. Infrared ranging sensor 11 is installed on the top of ash baffle 3 to monitor the height change of the coal pile at the bottom of ash baffle 3.

[0025] Positioning hooks 10 are fixedly connected around the bottom discharge port of the coal hopper 1. The leather tube 2 is hung on the positioning hooks 10. The leather tube 2 includes a leather curtain 21. The leather curtain 21 is rolled up into a circle and its two ends are fixedly connected by I-beam clips 22. Hanging rings 23 are fixedly connected through the top of the four sides of the leather curtain 21. The hanging rings 23 are used to fit the positioning hooks 10. A sealing strip 24 is glued to the top of the inner side of the leather curtain 21.

[0026] The surface of the infrared ranging sensor 11 is fixed with a fixing plate 111 by screwing a nut. One side of the fixing plate 111 is formed into a β-type sleeve for elastically engaging with the top of the dust cover 3. A vibration sensor 13 is fixedly connected to the side of the coal hopper 1. The vibration sensor 13 is used to detect the vibration of the coal hopper 1 when coal is fed in. The vibration sensor 13 is preset with thresholds for vibration response and vibration duration to avoid the coal hopper 1 being accidentally vibrated and causing misjudgment. Both the infrared ranging sensor 11 and the vibration sensor 13 are connected to the control system via data lines.

[0027] This application significantly lowers the discharge opening of the coal hopper 1 by adding a rubber drum 2 and a dust baffle 3 to the bottom of the hopper 1. This minimizes the distance between the bottom of the hopper and the truck bed during coal feeding, thereby reducing dust generation. The larger outer surface of the dust baffle 3 effectively traps dust emanating from the bottom of the rubber drum 2, while the dust baffle 4 at the top ensures that dust only diffuses within the dust baffle 3. Combined with the dust extraction from the suction pipe 7, this achieves a superior dust removal effect. The extracted dust is then sprayed into the dust suppression spray device 15 for further dust reduction. Dust is collected and discharged from the bottom for treatment. Compared with direct exposure spraying, it can avoid water accumulation on the ground. Moreover, one set of spray dust suppression device 15 can be connected to multiple sets of coal hoppers 1 to achieve collective dust removal. On this basis, the dust baffle 3 is designed to be liftable and is detected by infrared ranging sensor 11 to realize intelligent control of the lifting height of the dust baffle 3. The vibration sensor 13 installed on the coal hopper 1 can detect continuous vibration to determine that coal is being fed, and then start the system, thus realizing intelligent control of the system.

[0028] The second implementation differs from the first implementation in that the winding structure 5 includes four sets of winding mechanisms 51 and a right-angle transmission structure 52. The four sets of winding mechanisms 51 form the four sides of a quadrilateral, and the four sets of right-angle transmission structures 52 form the four right angles of the quadrilateral. The right-angle transmission structure 52 is used to transmit the driving force of the winding mechanisms 51 on adjacent sides at 90°. The winding mechanisms 51 and the right-angle transmission structures 52 are engaged and fixed by plugging. The winding mechanisms 51 are suspended on the lower coal hopper 1 by the hanging rope 513 at the top, and the hanging rope 513 is hung on the positioning hook 10.

[0029] The drum mechanism 51 includes: The upper cylinder 511 and the lower cylinder 512 are arranged in pairs, and one side is rotatably connected by a hinge 517, and the other side is fastened by a bolt. The hanging rope 513 is fixedly connected to the middle of the top of the upper cylinder 511. The rotating shaft 514 is rotatably connected between the upper cylinder 511 and the lower cylinder 512 via a bearing. Both ends of the rotating shaft 514 are provided with prism holes 516. The middle section of the rotating shaft 514 is set as a winding section 515, which is used to fix and wind up the lifting rope 6.

[0030] The right-angle transmission structure 52 includes: The upper cover 521 and the lower cover 522 are set in pairs and are fixedly connected by a bolt that passes through the center. The bottom center of the upper cover 521 is provided with a limiting block 525 protruding outwards, and the center of the lower cover 522 is provided with a limiting groove 526 that is inserted into the limiting block 525. Prism shaft 523, the two ends between the three sets of upper cover 521 and lower cover 522 are rotatably connected by bearings, and the prism shaft 523 is adapted to be inserted into the prism hole 516. The fourth set of upper cover 521 and lower cover 522 is rotatably connected to one end of the prism shaft 523, and the other end is fixedly connected to the motor 527. The bevel gear 524, each pair of prism shafts 523, and the opposite ends of the prism shafts 523 and the motor 527 are all driven by the meshing of the bevel gear 524.

[0031] By installing the winding structure 5 in conjunction with the lifting rope 6, the lifting and lowering control of the dust cover 3 can be realized. The winding structure 5 adopts a modular combination design, which is easy to install on the outside of the rubber tube 2 and has a certain error adaptation range, improving the installation adaptability. With the cooperation of the drum mechanism 51 and the right angle transmission structure 52, only one motor 527 is needed to drive the rotating shafts 514 around the four sides to rotate at the same time, and the lifting ropes 6 around the four sides can be wound up at the same time, which is convenient to use.

[0032] The main difference between the third and first implementation methods is that the vacuum suction pipe 7 includes: The ring tube 71 is arranged around the rubber tube 2 and is fixed to the hook 14 fixedly connected to the bottom of the winding structure 5. The sleeve 72 is fitted around the four sides of the ring tube 71, and the surface of the ring tube 71 has through holes 76 that communicate with the inner cavity of the sleeve 72. The sealing ring 75 is embedded inside the two ends of the sleeve 72. The surface of the annular tube 71 and both sides of the through hole 76 are provided with positioning grooves 77 that are adapted to the sealing ring 75. The bent tube 73 is fixedly connected to the side of the rubber tube 2, and one end passes through the dust-blocking membrane 4 and is locked by the screw sleeve 74; One end of the ring pipe 71 is closed, and the other end is connected to a dust suction hose 9. The other end of the dust suction hose 9 is connected to a bag filter via an air pump. The section of the dust suction hose 9 near the dust suction pipe 7 is fixed to the surface of the lower coal hopper 1 by a positioning hook 10.

[0033] The suction pipe 7 can be quickly installed by snapping into the elastic hook 14. The suction pipe 7 passes through the dust-blocking membrane 4 through multiple distributed bends 73, which can simultaneously extract dust from multiple points on all four sides. Moreover, the dust extraction points are located at the high point of the dust-blocking membrane 4, resulting in good dust extraction effect.

[0034] The fourth embodiment differs from the first embodiment in that: the top of the ash-blocking cover 3 is made into a curtain-like shape at the bottom by evenly spaced curtain grooves 31. At least two layers of ash scraping frames 8 are fixedly connected to the curtain tube 2. The specific number of layers depends on the range that a single layer of ash scraping frame 8 can scrape during the lifting and lowering of the ash-blocking cover 3, so as to scrape off the coal dust on the inner wall of the ash-blocking cover 3 as comprehensively as possible. The outer side of the bottom of the ash scraping frame 8 is attached to the inner wall of the ash-blocking cover 3 to open the ash-blocking cover 3 and scrape off the coal dust adhering to the inner wall of the ash-blocking cover 3 when the ash-blocking cover 3 is lifted and lowered. The scraper frame 8 includes: The fixing ring 81 is sleeved on the outside of the rubber tube 2 and fixed by the fixing bolt 82. Since the fixing bolt 82 can only be screwed in from the outside of the rubber tube 2 and it is not convenient to put the nut on the inside, the diameter of the bolt hole on the rubber tube 2 is smaller than the diameter of the stud of the fixing bolt 82. Then, after the fixing bolt 82 is screwed in, the bolt hole is opened and the elasticity of its expansion is used to fix the fixing bolt 82 tightly. The scraper 84 fits the inner wall of the dust cover 3, and the cross section of the scraper 84 is an isosceles trapezoid, that is, the upper and lower sides of the scraper 84 are close to the blade surface. The diagonal braces 83 are provided in multiple sets for fixing the fixing rings 81 and scrapers 84.

[0035] By installing a scraper 8 on the dust cover 3, the dust cover 3 is expanded to keep it as coaxial as possible with the rubber tube 2, and the spacing on each side is kept as consistent as possible, so as to cover the dust more evenly. At the same time, the bottom of the scraper 8 is also attached to the inner wall of the dust cover 3. During the raising and lowering of the dust cover 3, it can scrape the inner wall of the dust cover 3 to remove the dust attached to the inner wall. This can avoid the long-term accumulation of coal dust and increase the weight of the dust cover 3, and is convenient to use.

[0036] This invention also discloses a dust removal method for an intelligent dust removal device used in coal storage plants, comprising the following steps: Step 1: Initially, the ash baffle 3 is lowered to the bottom, and coal is put into the lower coal hopper 1. The coal is concentrated and discharged from the bottom of the lower coal hopper 1, and then discharged from the bottom through the rubber drum 2, and accumulates on the car body below. During this process, the vibration sensor 13 detects the vibration of the lower coal hopper 1. When the vibration amplitude and duration exceed the set threshold, it is determined that coal is being fed, and the control system itself is activated. Step 2: The infrared ranging sensor 11 detects the height of the coal pile below in real time and feeds back the data to the control system. The control system controls the winding structure 5 to wind up the hoisting rope 6 based on the coal pile height data. At this time, the motor 527 drives one of its corresponding prism shafts 523 to rotate through the bevel gear 524, which in turn drives the corresponding shaft 514 to rotate. Then, through the prism shaft 523 and bevel gear 524 at the other end, it drives the other shaft 514 to rotate, thereby driving all the shafts 514 to rotate together, winding up the four hoisting ropes 6 together, thereby raising the ash baffle 3, so that the distance value detected by the infrared ranging sensor 11 is maintained within the specified upper limit, that is, keeping the bottom of the ash baffle 3 close to the surface of the coal pile. Step 3: During the coal feeding process, the dust at the bottom of the drum 2 is trapped inside the ash baffle 3 and rises upward. The impeller exhaust fan 152 of the spray dust suppression device 15 is activated, and air is drawn from the dust suction pipe 7 through the dust suction hose 9. This causes the multiple bends 73 of the dust suction pipe 7 to simultaneously draw dust from multiple points, thereby drawing the dust rising inside the ash baffle 3 and discharging it into the spray chamber 151 through the air duct 153. At the same time, the spray nozzle 154 sprays water mist downward for spray dust suppression.

[0037] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent dust removal device for a coal storage plant, comprising a coal hopper (1) and a dust suction pipe (7), characterized in that, Also includes: The rubber tube (2) is installed on the outside of the bottom end of the lower coal hopper (1) to extend the bottom end of the lower coal hopper (1) to lower the position of the coal outlet; Dust shield (3) is fitted over the outside of the leather tube (2) to extend the bottom of the leather tube (2); The winding structure (5) is installed on the lower coal hopper (1), and the winding structure (5) is fixedly connected with the lifting rope (6) on all four sides. The winding structure (5) controls the lifting of the ash baffle (3) by synchronously winding and unwinding the four side lifting ropes (6), and then adjusts the bottom height of the ash baffle (3) according to the change of the bottom coal pile height. Dust-blocking membrane (4) is connected to the top between the leather tube (2) and the dust-blocking cover (3); The suction pipe (7) is installed at the bottom of the winding structure (5), and the suction pipe (7) is provided with multiple air inlets that penetrate to the bottom of the dust-blocking membrane (4). One end of the suction pipe (7) is connected to a spray dust suppression device (15) through a suction hose (9). An infrared ranging sensor (11) is installed on top of the ash baffle (3) to monitor the height change of the coal pile at the bottom of the ash baffle (3).

2. The intelligent dust removal device for a coal storage plant according to claim 1, characterized in that: The winding structure (5) includes four sets of winding mechanisms (51) and a right-angle transmission structure (52). The four sets of winding mechanisms (51) form the four sides of a quadrilateral, and the four sets of right-angle transmission structures (52) form the four right angles of the quadrilateral. The right-angle transmission structure (52) is used to transmit the driving force of the two adjacent winding mechanisms (51) at 90°. The winding mechanism (51) and the right-angle transmission structure (52) are engaged and fixed by plugging. The winding mechanism (51) is suspended on the lower coal hopper (1) by the hanging rope (513) at the top.

3. The intelligent dust removal device for a coal storage plant according to claim 2, characterized in that: The reel mechanism (51) includes: The upper cylinder (511) and the lower cylinder (512) are arranged in pairs, and one side is rotatably connected by a hinge (517), and the other side is fastened by a bolt. The hanging rope (513) is fixedly connected to the middle of the top of the upper cylinder (511). A rotating shaft (514) is rotatably connected between the upper cylinder (511) and the lower cylinder (512) via a bearing. Both ends of the rotating shaft (514) are provided with prism holes (516). The middle section of the rotating shaft (514) is set as a winding section (515) for fixing and winding the lifting rope (6).

4. The intelligent dust removal device for a coal storage plant according to claim 2, characterized in that: The right-angle transmission structure (52) includes: The upper cover (521) and the lower cover (522) are arranged in pairs and are fixedly connected by a bolt that passes through the center. A limiting block (525) is provided protruding from the bottom center of the upper cover (521), and a limiting groove (526) is provided in the center of the lower cover (522) that is inserted into the limiting block (525). Prism shaft (523), the two ends of the three sets of upper cover (521) and lower cover (522) are rotatably connected by bearings, and the prism shaft (523) is adapted to be inserted into the prism hole (516). The fourth set of upper cover (521) and lower cover (522) is rotatably connected to one end of the prism shaft (523), and the other end is fixedly connected to a motor (527). The bevel gear (524) is engaged with each pair of the prism shafts (523) and the opposite ends of the prism shafts (523) and the motor (527).

5. The intelligent dust removal device for a coal storage plant according to claim 1, characterized in that: The bottom outlet of the coal hopper (1) is fixedly connected with positioning hooks (10) around the perimeter. The leather tube (2) and the hanging rope (513) are both hung on the positioning hooks (10). The leather tube (2) includes a leather curtain (21). The leather curtain (21) is rolled up into a circle and its two ends are fixedly connected by I-beam clips (22). The top of the four sides of the leather curtain (21) is fixedly connected with hanging rings (23). The hanging rings (23) are used to fit the positioning hooks (10). The top of the inner side of the leather curtain (21) is glued with a sealing strip (24).

6. The intelligent dust removal device for a coal storage plant according to claim 1, characterized in that: The vacuum pipe (7) includes: A ring tube (71) is arranged around the rubber tube (2), and the ring tube (71) is fixed to the hook (14) fixedly connected to the bottom of the winding structure (5); A sleeve (72) is fitted around the four sides of the ring tube (71), and the surface of the ring tube (71) is provided with a through hole (76) that communicates with the inner cavity of the sleeve (72). The sealing ring (75) is embedded in both ends of the sleeve (72). The surface of the annular tube (71) and both sides of the through hole (76) are provided with positioning grooves (77) that are compatible with the sealing ring (75). The bent tube (73) is fixedly connected to the side of the tube (2), and one end passes through the dust-blocking membrane (4) and is locked by the screw sleeve (74).

7. The intelligent dust removal device for a coal storage plant according to claim 1, characterized in that: The section of the suction hose (9) near the suction pipe (7) is fixed to the surface of the lower coal hopper (1) by a positioning hook (10); The infrared ranging sensor (11) has a fixing plate (111) on its surface that is tightened with a nut. One side of the fixing plate (111) is formed into a β-type sleeve for elastically engaging with the top of the dust cover (3). A vibration sensor (13) is fixedly connected to the side of the coal hopper (1). The vibration sensor (13) is used to detect the vibration of the coal hopper (1) when coal is fed in. Both the infrared ranging sensor (11) and the vibration sensor (13) are connected to the control system via data lines.

8. The intelligent dust removal device and method for a coal storage plant according to claim 1, characterized in that: The top of the ash-blocking cover (3) is formed by evenly spaced curtain grooves (31), making the bottom of the ash-blocking cover (3) resemble a leather curtain. At least two layers of ash-scraping frames (8) are fixedly connected to the leather tube (2). The outer bottom of the ash-scraping frame (8) is attached to the inner wall of the ash-blocking cover (3) to open the ash-blocking cover (3) and scrape off the coal ash adhering to the inner wall of the ash-blocking cover (3) when the ash-blocking cover (3) is raised or lowered. The ash-scraping frame (8) includes: A fixing ring (81) is sleeved on the outside of the leather tube (2) and fixed by a fixing bolt (82); The scraper (84) fits against the inner wall of the dust cover (3), and the cross section of the scraper (84) is an isosceles trapezoid. The diagonal braces (83) are provided in multiple sets for fixing the connecting rings (81) and scrapers (84).

9. The intelligent dust removal device for a coal storage plant according to claim 1, characterized in that: The dust suppression spraying device (15) includes a spray chamber (151), a spray nozzle (154) is fixedly connected to the top center of the spray chamber (151), the spray nozzle (154) is used to introduce high-pressure water flow and spray it downwards, a drain valve (155) is fixedly connected to the bottom of the spray chamber (151), a duct (153) is fixedly connected through the side of the spray chamber (151), and one end of the duct (153) inside the spray chamber (151) extends to the center of the spray chamber (151), an impeller exhaust fan (152) is fixedly connected to the side of the spray chamber (151), and the outlet of the impeller exhaust fan (152) is connected to the outer end of the duct (153), and the inlet of the impeller exhaust fan (152) is connected to the dust suction hose (9).

10. A dust removal method based on the intelligent dust removal device for a coal storage plant according to any one of claims 1-9, characterized in that: Includes the following steps: Step 1: Initially, the ash baffle (3) is lowered to the bottom, and the coal is put into the lower coal hopper (1). The coal is concentrated and discharged from the bottom of the lower coal hopper (1), and discharged from the bottom through the rubber tube (2), and piled up on the car body below. Step 2: The infrared ranging sensor (11) detects the height of the coal pile below in real time and feeds back the data to the control system. The control system controls the winding structure (5) to wind up the hoisting rope (6) based on the coal pile height data, thereby raising the ash baffle (3) so that the distance value detected by the infrared ranging sensor (11) is maintained within the specified upper limit, that is, keeping the bottom of the ash baffle (3) close to the surface of the coal pile. Step 3: During the coal feeding process, the dust at the bottom of the drum (2) is trapped inside the dust baffle (3) and rises upward. The spray dust suppression device (15) is activated to extract the air from the dust suction pipe (7), thereby extracting the dust rising inside the dust baffle (3) and discharging it into the spray dust suppression device (15) for spray dust suppression treatment.

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