A high-efficiency filtering and recycling device for coal dust in a coal bunker

Abstract

The application discloses a coal dust high-efficiency filtering and recycling device between coal bunkers and relates to the technical field of atmospheric pollution prevention and control. The device comprises a filtering and recycling mechanism, which comprises a supporting frame. An auxiliary mechanism is arranged on the supporting frame. The auxiliary mechanism comprises a storage box, two gears, two chain wheels, a supporting table and an auxiliary table. A limiting rod and a rectangular strip are movably penetrated through the surface of the supporting plate. A screw rod is fixed to one end of the limiting rod. A motor is additionally arranged on the surface of the supporting plate. A treatment cylinder is arranged around the screw rod. A conveying pipe is arranged in the treatment cylinder. A partition is movably sleeved with the air inlet end of the conveying pipe. The auxiliary mechanism can be used for treating the discharged air after filtering, so that the harmful substance emission into the atmosphere is reduced. Meanwhile, the adsorption material can be automatically replaced, so that the adsorption and purification effect can be continuously operated, and the use efficiency of the filtering and recycling device is improved.

Description

Technical Field

[0001] This invention relates to the field of air pollution control technology, specifically to a high-efficiency coal dust filtration and recovery device for coal bunkers. Background Technology

[0002] As a key link in coal transfer and storage, coal bunkers generate a large amount of fine dust during coal cutting, crushing and transportation. If this dust is directly released, it will cause dust accumulation at the work site and aggravate the air pollution level in the surrounding area. Therefore, in order to fundamentally curb pollutant emissions and reduce air pollution, it is necessary to treat it at the source using filtration and recovery devices.

[0003] While existing high-efficiency coal dust filtration and recovery devices in coal bunkers can effectively recover coal dust through physical interception, thus achieving a certain degree of air pollution control and ensuring a clean production environment, they still have the following shortcomings in practical applications:

[0004] The coal dust high-efficiency filtration and recovery device in the coal bunker can only remove coal dust particles and cannot deeply purify the residual volatile organic gases and harmful odors in the filtered exhaust air. At the same time, it lacks the function of automatic replacement of adsorption materials, which makes it difficult to maintain the adsorption and purification effect continuously and efficiently. Ultimately, it restricts the overall use effect and environmental compliance of the filtration and recovery device.

[0005] Therefore, we propose a high-efficiency coal dust filtration and recovery device for coal bunkers to solve the problems mentioned in the background art. Summary of the Invention

[0006] The purpose of this invention is to provide a high-efficiency coal dust filtration and recovery device for coal bunkers. By setting up an auxiliary mechanism, the filtered air can be treated, thereby reducing the emission of harmful substances into the atmosphere. At the same time, the adsorption material can be automatically replaced, thereby ensuring the continuous operation of the adsorption and purification effect, thus solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency coal dust filtration and recovery device for coal bunkers, comprising a filtration and recovery mechanism, wherein the filtration and recovery mechanism includes a support frame, and an auxiliary mechanism is provided on the support frame. The auxiliary mechanism is used to treat harmful substances in the filtered air of the coal bunker and can replace the adsorption material itself.

[0008] The auxiliary mechanism includes a storage bin, two gears, two sprockets, a support platform, and an auxiliary platform. A support plate is provided below the storage bin. A limiting rod and a rectangular strip are movably passed through the surface of the support plate. A screw rod is fixed to one end of the limiting rod, and a connecting block is fixed to one end of the rectangular strip. A motor is mounted on the surface of the support plate. A connecting rod is rotatably connected to the inside of the circular hole of the support plate through a first bearing. A processing cylinder is arranged around the screw rod. A conveying pipe is arranged inside the processing cylinder. A separator is movably sleeved at the air inlet end of the conveying pipe. Each groove of the separator has a first vent hole pre-set on its inner wall. A second vent hole is pre-set on the outer wall of the air inlet end of the conveying pipe. A perforated plate is installed at the opening of the processing cylinder, and a sealing ring is glued to the inside of the perforated plate. A threaded sleeve is threaded onto the screw rod. A filter screen is glued to the inlet of each of the first vent holes.

[0009] Preferably, an electric valve is connected to the top inlet of the storage box, the storage box is installed between the top of the support plate and the auxiliary platform, a vibrator is installed on the outer wall of the storage box near the discharge port, and the support plate, support platform and auxiliary platform are all installed on the support frame.

[0010] Preferably, one end of the screw rod is rotatably connected to the surface groove of the connecting block via a second bearing, and one end of the screw rod and one end of the rectangular bar both movably penetrate the surface of the auxiliary platform. The motor, connecting rod, and two gears are used to drive the separator to rotate, and the outer wall of the processing cylinder is fixedly connected to a guide pipe.

[0011] Preferably, the guide pipe is extruded and fixed between the support platform and the auxiliary platform, the air inlet end of the conveying pipe is fixed to the inner wall of the processing cylinder, the separator is used to separate the internal space of the processing cylinder, wherein the interior of the first vent hole and the interior of the second vent hole are connected, and the discharge end of the storage box is fixedly penetrated through the outer wall of the processing cylinder.

[0012] Preferably, the interior of the storage box and the interior of the processing cylinder are connected, the two gears are respectively fixed to one end of the connecting rod and the air inlet end of the conveying pipe, the two sprockets are respectively fixed to the air inlet end of the conveying pipe and the outer wall of the screw sleeve, and the sealing ring is used to seal between the conveying pipe and the perforated plate.

[0013] Preferably, a sealing ring is provided in the groove of the inner wall of the separator's central hole. The sealing ring is used to seal between the separator and the conveying pipe. The two gears are meshed and connected. The two sprockets are connected by chain drive. One end of the rectangular bar movably passes through the discharge end surface of the storage box.

[0014] Preferably, a flow guide shell is fixed to the top of the support frame, a ash discharge device is connected to the ash discharge port of the flow guide shell, a middle protective shell is installed on the top of the flow guide shell, a top protective shell is installed on the top of the middle protective shell, a top cover is installed on the top of the top protective shell, an installation platform is installed between the outer wall of the middle protective shell and the outer wall of the top protective shell, and a gas storage tank is installed on the top of the installation platform.

[0015] Preferably, each outlet of the gas storage tank is connected to an electromagnetic pulse valve, each outlet of the electromagnetic pulse valve is connected to a connecting pipe, each outlet of the connecting pipe is connected to a blowpipe, the main inlet of each blowpipe is fixedly penetrated through the inner wall of the top protective shell, the main outlet of each blowpipe is fixed to the inner wall of the top protective shell, and a perforated plate is fixed inside the top protective shell.

[0016] Preferably, a venturi tube is installed at each round hole of the tube sheet, a filter bag frame is placed inside each round hole of the tube sheet, the air outlet of each venturi tube extends into the interior of each filter bag frame, the filter bag frame is fixed to the tube sheet by the venturi tube, a dust removal filter bag is tied to each filter bag frame, a fan is installed on the support frame, and the air inlet of the guide shell is connected to a three-way pipe.

[0017] Preferably, one of the air inlet ends of the three-way pipe is connected to a one-way valve, the air outlet end of the top protective shell is connected to a connecting pipe, the blow pipe and the venturi tube are used to transport the delivered gas into the interior of the dust collector filter bag to clean the coal dust attached to the surface of the dust collector filter bag, the air outlet end of the connecting pipe is connected to the air inlet end of the guide pipe, a control cabinet is installed on the support frame, and the air inlet end of the fan is connected to the air outlet end of the conveying pipe.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. In this invention, by setting an auxiliary mechanism, the filtered air can be treated, thereby reducing the emission of harmful substances into the atmosphere. At the same time, the adsorbent material can be automatically replaced, thereby ensuring the continuous operation of the adsorption and purification effect and improving the efficiency of the filtration and recovery device. When it is necessary to adjust the position of the adsorbent particles injected into the separator, the motor, control cabinet, connecting rod, two first gears and separator are used to change the position of the adsorbent particles inside the separator. At the same time, by rotating the separator, two sprockets, chain, screw sleeve, auxiliary platform, support plate, limit rod, screw rod, connecting block and rectangular bar, the round hole on the rectangular bar can be moved out from the discharge end of the storage box, that is, the flow of adsorbent particles inside the storage box is prevented. At the same time, the first vent hole and the second vent hole in the groove of the separator containing adsorbent particles can be connected.

[0020] 2. In this invention, when it is necessary to replace the adsorbent particles, the adsorbent particles inside the separator can be moved again by the cooperation of the motor, control cabinet and previously linked components. Then, the used adsorbent particles can be discharged from the discharge hole reserved on the processing cylinder. After the used adsorbent particles have been discharged, the separator can be rotated back to the initial position and new adsorbent particles can be injected again, so that it can be used again.

[0021] 3. In this invention, by setting up a filtration and recovery mechanism, the coal dust in the coal bunker can be filtered and recovered, thereby preventing air pollution and ensuring a clean production environment. When it is necessary to filter and recover the coal dust in the coal bunker, the air in the coal bunker and the incoming hot air are first transported together into the guide shell to prevent water vapor from condensing into liquid water. Then, through the cooperation of dust removal filter bags, tube sheet, middle protective shell, top protective shell, top cover, filter bag frame and venturi tube, the coal dust can be filtered down. At the same time, the filtered air can be transported into the connecting pipe for the removal of harmful substances in the air in the later stage.

[0022] 4. In this invention, when it is necessary to remove coal dust adhering to the surface of the dust collector filter bag, the compressed air in the air storage tank can be released into the interior of each dust collector filter bag by the cooperation of the control cabinet, electromagnetic pulse valve, connecting pipe, blow pipe and venturi tube. That is, the coal dust on the surface of the dust collector filter bag is cleaned by the injected compressed air. Then, the coal dust collected inside the guide shell can be recycled by the cooperation of the ash discharge device and the control cabinet. Attached Figure Description

[0023] Figure 1 This is a side perspective perspective view of a high-efficiency coal dust filtration and recovery device for coal bunkers according to the present invention;

[0024] Figure 2 This is a top-view perspective view of a high-efficiency coal dust filtration and recovery device for coal bunkers according to the present invention.

[0025] Figure 3 This is a perspective view of the auxiliary mechanism of a high-efficiency coal dust filtration and recovery device in a coal bunker according to the present invention.

[0026] Figure 4 This is a perspective view of another part of the auxiliary mechanism of the high-efficiency coal dust filtration and recovery device in a coal bunker according to the present invention;

[0027] Figure 5 This is a partial sectional perspective view of the filtration and recovery mechanism of a high-efficiency coal dust filtration and recovery device for coal bunkers according to the present invention.

[0028] Figure 6This is a partial perspective view of the auxiliary mechanism of a high-efficiency coal dust filtration and recovery device in a coal bunker according to the present invention.

[0029] Figure 7 This is a sectional perspective view of the auxiliary mechanism of a high-efficiency coal dust filtration and recovery device in a coal bunker according to the present invention.

[0030] Figure 8 This invention relates to a high-efficiency coal dust filtration and recovery device for coal bunkers. Figure 1 Enlarged 3D view of the structure at point A in the middle;

[0031] Figure 9 This is a three-dimensional structural diagram of the limiting rod, screw rod, rectangular bar, connecting block, sprocket, and screw sleeve of a high-efficiency coal dust filtration and recovery device in a coal bunker according to the present invention.

[0032] Figure 10 This is a perspective cross-sectional view of the filtration and recovery mechanism of a high-efficiency coal dust filtration and recovery device for coal bunkers according to the present invention.

[0033] In the diagram: 1. Filtration and recovery mechanism; 101. Support frame; 102. Flow guide shell; 103. Ash discharge device; 104. Middle protective shell; 105. Top protective shell; 106. Top cover; 107. Mounting platform; 108. Air storage tank; 109. Electromagnetic pulse valve; 110. Connecting pipe; 111. Pulse jet pipe; 112. Tube plate; 113. Venturi tube; 114. Filter bag frame; 115. Dust collector filter bag; 116. Fan; 117. T-junction pipe; 118. Check valve; 119. Connecting pipe; 2. Control cabinet; 3. Auxiliary mechanism; 301. Storage box; 302. Electric valve; 303. Vibrator; 304. Support plate; 305. Limiting rod; 306. Screw rod; 307. Rectangular bar; 308. Connecting block; 309. Motor; 310. Connecting rod; 311. Guide pipe; 312. Processing cylinder; 313. Conveying pipe; 314. Divider; 315. First vent; 316. Second vent; 317. Gear; 318. Sprocket; 319. Perforated plate; 320. Sealing ring; 321. Sealing ring; 322. Support platform; 323. Screw sleeve; 324. Auxiliary platform; 325. Filter screen. Detailed Implementation

[0034] 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.

[0035] Example 1: Please refer to Figures 1-10As shown, the present invention provides a technical solution: a high-efficiency coal dust filtration and recovery device for coal bunkers, including a filtration and recovery mechanism 1. The filtration and recovery mechanism 1 includes a support frame 101, a guide shell 102 fixed to the top of the support frame 101, an ash discharge device 103 connected to the ash discharge port of the guide shell 102, a middle protective shell 104 installed on the top of the guide shell 102, a top protective shell 105 installed on the top of the middle protective shell 104, a top cover 106 installed on the top of the top protective shell 105, and an installation platform 107 installed between the outer wall of the middle protective shell 104 and the outer wall of the top protective shell 105. A gas storage tank 108 is installed on the top of the platform 107. Each outlet of the gas storage tank 108 is connected to an electromagnetic pulse valve 109. Each outlet of the electromagnetic pulse valve 109 is connected to a connecting pipe 110. Each outlet of the connecting pipe 110 is connected to a blowpipe 111. The main inlet of each blowpipe 111 is fixedly inserted through the inner wall of the top protective shell 105. The main outlet of each blowpipe 111 is fixed to the inner wall of the top protective shell 105. A perforated plate 112 is fixed inside the top protective shell 105. A venturi tube 113 is installed at each round hole of the perforated plate 112. Each circular hole contains a filter bag frame 114. The outlet of each venturi tube 113 extends into the interior of each filter bag frame 114. The filter bag frame 114 is pressed and fixed to the tube sheet 112 by the venturi tubes 113. Each filter bag frame 114 is secured with a dust collector filter bag 115. A fan 116 is installed on the support frame 101. The inlet of the guide shell 102 is connected to a three-way pipe 117. One of the inlet ends of the three-way pipe 117 is connected to a one-way valve 118. The outlet of the top protective shell 105 is connected to a connecting pipe 119. The blowpipe 111 and the venturi tube 113 are used to convey the dust collector filter bag. The incoming gas is delivered to the inside of the dust collector filter bag 115 to clean the coal dust adhering to the surface of the dust collector filter bag 115. A control cabinet 2 is installed on the support frame 101. The auxiliary mechanism 3 includes a storage box 301, two gears 317, two sprockets 318, a support platform 322 and an auxiliary platform 324. A support plate 304 is provided below the storage box 301. A limiting rod 305 and a rectangular strip 307 are movably passed through the surface of the support plate 304. A screw rod 306 is fixed at one end of the limiting rod 305. A processing cylinder 312 is provided around the screw rod 306. A guide pipe 311 is fixedly connected to the outer wall of the processing cylinder 312.

[0036] In this embodiment, when it is necessary to filter and recover coal dust in the coal bunker, the fan 116 is started via the control cabinet 2. The started fan 116, through the three-way pipe 117 and the one-way valve 118, draws away the air in the coal bunker along with the incoming hot air (this prevents water vapor from condensing into liquid water, thus preventing liquid water from combining with coal dust to form viscous coal sludge that clogs the filter holes of the dust collector filter bag 115), and then delivers it into the interior of the guide shell 102, and subsequently into the interior of the central protective shell 104. Then the air passes through... The air passes through the surface of the dust collector filter bag 115 and enters its interior, while the coal dust remains on the surface of the dust collector filter bag 115. The air then enters the venturi tube 113 and then gathers inside the space formed by the top protective shell 105, the top cover 106, and the tube sheet 112. Finally, all the air is transported to the connecting pipe 119. When the air enters the processing cylinder 312 through the guide pipe 311, it comes into contact with the adsorbent particles, which then absorb the harmful substances in the air. After the coal dust is removed, the treated air is discharged into the environment by the activated fan 116. When it is necessary to remove coal dust adhering to the surface of the dust collector filter bag 115, all the solenoid pulse valves 109 are activated through the control cabinet 2. At this time, the compressed air inside the air tank 108 is delivered to the inside of each dust collector filter bag 115 through the solenoid pulse valve 109, connecting pipe 110, blowpipe 111 and venturi tube 113, so that the coal dust on the surface of the dust collector filter bag 115 can be cleaned by the compressed air. When the coal dust is removed, it falls into the interior of the guide shell 102 under its own gravity for collection. When it is necessary to clean the coal dust collected inside the guide shell 102, the ash discharge device 103 is activated through the control cabinet 2. The activated ash discharge device 103 will release the coal dust inside the guide shell 102 for workers to collect and store. This method can efficiently filter and recover the coal dust inside the coal bunker, thereby preventing air pollution and ensuring a clean production environment.

[0037] Example 2: According to Figures 1-9As shown, an auxiliary mechanism 3 is provided on the support frame 101. The auxiliary mechanism 3 is used to treat harmful substances in the air of the filtered coal bunker and can replace the adsorption material itself. The auxiliary mechanism 3 includes a storage box 301, two gears 317, two sprockets 318, a support platform 322, and an auxiliary platform 324. A support plate 304 is provided below the storage box 301. A limiting rod 305 and a rectangular bar 307 are movably passed through the surface of the support plate 304. A screw rod 306 is fixed to one end of the limiting rod 305, and a connecting block 308 is fixed to one end of the rectangular bar 307. A motor 309 is installed on the surface of the support plate 304. A connecting rod 310 is rotatably connected to the inside of the circular hole of the support plate 304 through a first bearing. A processing cylinder 312 is provided around the screw rod 306. The processing cylinder 312 has a conveying pipe 313 inside. A separator 314 is movably connected to the air inlet end of the conveying pipe 313. Each groove of the separator 314 has a first vent hole 315 pre-set on its inner wall. The air inlet end of the conveying pipe 313 has a second vent hole 316 pre-set on its outer wall. A perforated plate 319 is installed at the opening of the processing cylinder 312, and a sealing ring 320 is bonded to the inside of the perforated plate 319. A threaded sleeve 323 is threaded onto the screw rod 306. A filter screen 325 is bonded to the inlet of each first vent hole 315. An electric valve 302 is connected to the top inlet of the storage box 301. The storage box 301 is installed between the top of the support plate 304 and the auxiliary platform 324. A vibrator 30 is installed on the outer wall of the storage box 301 near the outlet. 3. Support plate 304, support platform 322, and auxiliary platform 324 are all mounted on support frame 101. One end of screw rod 306 is rotatably connected to the groove on the surface of connecting block 308 via a second bearing. One end of screw rod 306 and one end of rectangular bar 307 both movably penetrate the surface of auxiliary platform 324. Motor 309, connecting rod 310, and two gears 317 are used to drive separator 314 to rotate. The outer wall of processing cylinder 312 is fixedly connected to guide pipe 311. Guide pipe 311 is squeezed and fixed between support platform 322 and auxiliary platform 324. The air inlet end of conveying pipe 313 is fixed to the inner wall of processing cylinder 312. Separator 314 is used to separate the internal space of processing cylinder 312, with one first vent 315 inside and the other second vent 31. The internal components are interconnected. The discharge end of the storage bin 301 is fixedly connected through the outer wall of the processing cylinder 312. The interior of the storage bin 301 and the interior of the processing cylinder 312 are connected. Two gears 317 are respectively fixed to one end of the connecting rod 310 and the air inlet end of the conveying pipe 313. Two sprockets 318 are respectively fixed to the air inlet end of the conveying pipe 313 and the outer wall of the screw sleeve 323. A sealing ring 320 is used to seal between the conveying pipe 313 and the perforated plate 319. A sealing ring 321 is provided in the groove of the inner wall of the middle hole of the separator 314. The sealing ring 321 is used to seal between the separator 314 and the conveying pipe 313. The two gears 317 are meshed and connected. The two sprockets 318 are connected by chain drive. One end of the rectangular bar 307 movably passes through the surface of the discharge end of the storage bin 301.Furthermore, the circular hole on the rectangular strip 307 is connected to the interior of the storage bin 301. A fan 116 is installed on the support frame 101. A guide shell 102 is fixed to the top of the support frame 101. A middle protective shell 104 is installed on the top of the guide shell 102. A top protective shell 105 is installed on the top of the middle protective shell 104. The air outlet of the top protective shell 105 is connected to a connecting pipe 119. The air outlet of the connecting pipe 119 is connected to the air inlet of the guide pipe 311. A control cabinet 2 is installed on the support frame 101. The air inlet of the fan 116 is connected to the air outlet of the conveying pipe 313.

[0038] In this embodiment, when it is necessary to adjust the position of the adsorbent particles inside the separator 314, the motor 309 is first started via the control cabinet 2. The started motor 309 then drives the connected rod 310 to rotate. The rotating connected rod 310, through two meshing gears 317, drives the separator 314 to rotate inside the processing cylinder 312. The rotating separator 314, through two sprockets 318 and a chain, also drives the screw sleeve 323 to rotate. Simultaneously, the rotating screw... The sleeve 323, through the cooperation of the auxiliary platform 324, support plate 304, and limit rod 305, drives the screw rod 306 to move horizontally. At this time, the moving screw rod 306 also drives the rectangular bar 307 to move through the connecting block 308. When the separator 314 completes a 90-degree forward rotation, the first vent 315 in the groove of the separator 314 containing adsorbent particles is connected to the inside of the second vent 316. At the same time, the round hole on the rectangular bar 307 will also move out from the inside of the discharge end of the storage box 301. This prevents the flow of adsorbent particles inside the storage tank 301. At this time, the control cabinet 2 will stop the motor 309. When it is necessary to replace the adsorbent particles, the control cabinet 2 will first stop the fan 116, and then restart the motor 309, allowing the adsorbent particles in the groove of the separator 314 to rotate 90 degrees forward again. When the separator 314 completes the rotation, the used adsorbent particles will be discharged from the discharge hole reserved on the processing cylinder 312. When the adsorbent particles are completely discharged, the separator 314 will rotate 180 degrees in the reverse direction to the initial position, and new adsorbent particles will be injected back into the storage tank 301. After an appropriate amount is injected, it will rotate 90 degrees forward again. After the rotation is completed, the motor 309 will be turned off, and the fan 116 will be started to continue the high-efficiency filtration and recovery of coal dust in the coal bunker. This method can remove harmful substances from the air after coal dust filtration in the coal bunker and can also automatically replace the used adsorbent particles, thereby improving the efficiency of the filtration and recovery device.

[0039] The overall effect and working principle of the mechanism are as follows: Before use, connect the air inlet of the one-way valve 118 to the air outlet of the pipe that transports hot air, and connect the other air inlet of the three-way pipe 117 to the air outlet between the coal bunkers. Then connect the control cabinet 2 to the power supply equipment. Next, set the valve opening and closing time of the electromagnetic pulse valve 109, the wind speed of the fan 116, and the vibration frequency of the vibrator 303 through the control cabinet 2. Then open the electric valve 302 and the vibrator 303 to inject an appropriate amount of adsorbent particles into the storage box 301. When the adsorbent particles have been injected, the space connected to the inside of the storage box 301 (the space composed of the separator 314, the processing cylinder 312, the perforated plate 319, the filter screen 325 and the sealing ring 320) has been injected with an appropriate amount of adsorbent particles. Then close the electric valve 302.

[0040] When it is necessary to adjust the position of the adsorbent particles inside the separator 314, the motor 309 is started via the control cabinet 2. The started motor 309 drives the connected rod 310 to rotate. The rotating rod 310, through two meshing gears 317, drives the separator 314 to rotate inside the processing cylinder 312. The rotating separator 314, through two sprockets 318 and a chain, also drives the screw sleeve 323 to rotate. Simultaneously, the rotating screw sleeve 323, through the auxiliary platform 324, support plate 304, and... The limit rod 305 drives the screw rod 306 to move horizontally. At this time, the moving screw rod 306 also drives the rectangular bar 307 to move through the connecting block 308. When the separator 314 completes a 90-degree rotation in the forward direction, the first vent 315 at the groove of the separator 314 containing adsorbent particles is connected to the inside of the second vent 316. At the same time, the round hole on the rectangular bar 307 will also move out from the inside of the discharge end of the storage box 301, thus preventing the adsorbent particles inside the storage box 301 from flowing. At this time, the control cabinet 2 will stop the motor 309.

[0041] When it is necessary to filter and recover coal dust in the coal bunker, the fan 116 is started through the control cabinet 2. The fan 116 will draw away the air in the coal bunker and the hot air delivered together through the three-way pipe 117 and the one-way valve 118 (this can prevent water vapor from condensing into liquid water, so as to prevent liquid water from combining with coal dust to form viscous coal sludge that blocks the filter holes of the dust removal filter bag 115), and deliver it to the inside of the guide shell 102, and then to the inside of the middle protective shell 104. Then the air will pass through the surface of the dust removal filter bag 115 and enter its interior, while the coal dust will remain on the surface of the dust removal filter bag 115. After that, the air entering the inside of the dust removal filter bag 115 will enter the inside of the venturi tube 113, and then gather into the space composed of the top protective shell 105, the top cover 106 and the tube sheet 112, and then all of it will be delivered to the inside of the connecting pipe 119.

[0042] When air enters the processing cylinder 312 through the guide pipe 311, it comes into contact with the adsorbent particles, which adsorb and remove harmful substances from the air. The treated air then passes through the corresponding filter screen 325, the first vent 315, and the second vent 316, and is delivered into the conveying pipe 313. It is then discharged into the environment by the activated fan 116. When it is necessary to remove coal dust adhering to the surface of the dust collector filter bag 115, all the electromagnetic pulse valves 109 are activated via the control cabinet 2, at which point the compressed air inside the air storage tank 108 will... By cooperating with the electromagnetic pulse valve 109, connecting pipe 110, blow pipe 111, and venturi tube 113, compressed air is delivered to the interior of each dust collector filter bag 115. The coal dust on the surface of the dust collector filter bag 115 can be cleaned off by compressed air. The cleaned coal dust will fall into the interior of the guide shell 102 by its own gravity for collection. When it is necessary to clean the coal dust collected inside the guide shell 102, the ash discharge device 103 is activated through the control cabinet 2. The activated ash discharge device 103 will release the coal dust inside the guide shell 102 for workers to collect and store.

[0043] When it is necessary to replace the adsorbent particles, the fan 116 is paused via control cabinet 2, and then the motor 309 is restarted. This allows the adsorbent particles in the groove of the separator 314 to rotate 90 degrees forward again. When the separator 314 completes the rotation, the used adsorbent particles will be discharged from the discharge hole reserved on the processing cylinder 312. When the adsorbent particles are completely discharged, the separator 314 is rotated 180 degrees in the reverse direction to the initial position to re-inject new adsorbent particles into the storage tank 301. After injecting an appropriate amount, the separator is rotated 90 degrees forward again. After completing the rotation, the motor 309 is turned off, the fan 116 is started, and the high-efficiency filtration and recovery of coal dust in the coal bunker can continue.

[0044] The adsorbent particles are composed of a mixture of activated carbon particles, zeolite particles, silica gel particles and molecular sieve particles. The activated carbon particles can adsorb and remove benzene series compounds, phenols, polycyclic aromatic hydrocarbons (naphthalene), thiols, thioethers, hydrogen sulfide and tar odor in the air. The zeolite particles can adsorb and remove highly polar organic molecules (such as some alcohols and amines) and dry water vapor. The silica gel particles can dry water vapor. The molecular sieve particles can adsorb and remove carbon dioxide and dry water vapor.

[0045] The wiring diagram between the ash removal device 103, electromagnetic pulse valve 109, fan 116, electric valve 302, vibrator 303, motor 309 and control cabinet 2 is a publicly disclosed technology in this field. The model can be selected according to the actual situation, so the control method and wiring between these components will not be described in detail here.

[0046] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency coal dust filtration and recovery device for coal bunkers, comprising a filtration and recovery mechanism (1), characterized in that: The filtration and recovery mechanism (1) includes a support frame (101), on which an auxiliary mechanism (3) is provided. The auxiliary mechanism (3) is used to treat harmful substances in the air in the coal bunker after filtration, and can replace the adsorption material itself. The auxiliary mechanism (3) includes a storage bin (301), two gears (317), two sprockets (318), a support platform (322), and an auxiliary platform (324). A support plate (304) is provided below the storage bin (301). A limiting rod (305) and a rectangular bar (307) are movably passed through the surface of the support plate (304). A screw rod (306) is fixed to one end of the limiting rod (305), and a connecting block (308) is fixed to one end of the rectangular bar (307). A motor (309) is installed on the surface of the support plate (304). A connecting rod (310) is rotatably connected to the inside of the circular hole of the support plate (304) through a first bearing. 6) is surrounded by a processing cylinder (312), and inside the processing cylinder (312) is a conveying pipe (313). The air inlet end of the conveying pipe (313) is movably sleeved with a separator (314). Each groove of the separator (314) has a first vent hole (315) pre-set on its inner wall. The air inlet end of the conveying pipe (313) has a second vent hole (316) pre-set on its outer wall. A perforated plate (319) is installed at the opening of the processing cylinder (312), and a sealing ring (320) is bonded inside the perforated plate (319). A threaded sleeve (323) is threaded onto the screw rod (306). A filter screen (325) is bonded at the inlet of each of the first vent holes (315).

2. The high-efficiency coal dust filtration and recovery device in the coal bunker according to claim 1, characterized in that: An electric valve (302) is connected to the top inlet of the storage box (301). The storage box (301) is installed between the top of the support plate (304) and the auxiliary platform (324). A vibrator (303) is installed on the outer wall of the storage box (301) near the outlet. The support plate (304), the support platform (322) and the auxiliary platform (324) are all installed on the support frame (101).

3. The high-efficiency coal dust filtration and recovery device in the coal bunker according to claim 1, characterized in that: One end of the screw rod (306) is rotatably connected to the groove on the surface of the connecting block (308) via the second bearing. One end of the screw rod (306) and one end of the rectangular bar (307) both movably penetrate the surface of the auxiliary platform (324). The motor (309), the connecting rod (310), and the two gears (317) are used to drive the separator (314) to rotate. The outer wall of the processing cylinder (312) is fixedly connected to the guide pipe (311).

4. The high-efficiency coal dust filtration and recovery device in the coal bunker according to claim 3, characterized in that: The guide pipe (311) is squeezed and fixed between the support platform (322) and the auxiliary platform (324). The air inlet end of the conveying pipe (313) is fixed to the inner wall of the processing cylinder (312). The separator (314) is used to separate the internal space of the processing cylinder (312). The first vent hole (315) and the second vent hole (316) are connected. The discharge end of the storage box (301) is fixed through the outer wall of the processing cylinder (312).

5. The high-efficiency coal dust filtration and recovery device in the coal bunker according to claim 1, characterized in that: The interior of the storage box (301) is connected to the interior of the processing cylinder (312). The two gears (317) are respectively fixed to one end of the connecting rod (310) and the air inlet end of the conveying pipe (313). The two sprockets (318) are respectively fixed to the air inlet end of the conveying pipe (313) and the outer wall of the screw sleeve (323). The sealing ring (320) is used to seal between the conveying pipe (313) and the perforated plate (319).

6. The high-efficiency coal dust filtration and recovery device in the coal bunker according to claim 1, characterized in that: A sealing ring (321) is provided in the groove of the inner wall of the middle hole of the separator (314). The sealing ring (321) is used to seal between the separator (314) and the conveying pipe (313). The two gears (317) are meshed and connected. The two sprockets (318) are connected by chain drive. One end of the rectangular bar (307) moves through the discharge end surface of the storage box (301).

7. The high-efficiency coal dust filtration and recovery device in the coal bunker according to claim 3, characterized in that: The top of the support frame (101) is fixed with a flow guide shell (102), and the ash discharge port of the flow guide shell (102) is connected to an ash discharge device (103). A middle protective shell (104) is installed on the top of the flow guide shell (102), a top protective shell (105) is installed on the top of the middle protective shell (104), a top cover (106) is installed on the top of the top protective shell (105), an installation platform (107) is installed between the outer wall of the middle protective shell (104) and the outer wall of the top protective shell (105), and a gas storage tank (108) is installed on the top of the installation platform (107).

8. The high-efficiency coal dust filtration and recovery device in the coal bunker according to claim 7, characterized in that: Each outlet of the gas storage tank (108) is connected to an electromagnetic pulse valve (109), and each outlet of the electromagnetic pulse valve (109) is connected to a connecting pipe (110). Each outlet of the connecting pipe (110) is connected to a blow pipe (111). The main inlet of each blow pipe (111) is fixedly penetrated through the inner wall of the top protective shell (105), and the main outlet of each blow pipe (111) is fixed to the inner wall of the top protective shell (105). A perforated plate (112) is fixed inside the top protective shell (105).

9. The high-efficiency coal dust filtration and recovery device in the coal bunker according to claim 8, characterized in that: A venturi tube (113) is installed at each round hole of the tube sheet (112), and a filter bag frame (114) is placed inside each round hole of the tube sheet (112). The air outlet of each venturi tube (113) extends into the interior of each filter bag frame (114). The filter bag frame (114) is pressed and fixed on the tube sheet (112) by the venturi tube (113). A dust removal filter bag (115) is tied on each filter bag frame (114). A fan (116) is installed on the support frame (101), and a three-way pipe (117) is connected to the air inlet of the guide shell (102).

10. The high-efficiency coal dust filtration and recovery device in the coal bunker according to claim 9, characterized in that: One of the air inlets of the three-way pipe (117) is connected to a one-way valve (118), the air outlet of the top protective shell (105) is connected to a connecting pipe (119), the blow pipe (111) and the venturi tube (113) are used to transport the gas to the inside of the dust collector filter bag (115) to clean the coal dust attached to the surface of the dust collector filter bag (115), the air outlet of the connecting pipe (119) is connected to the air inlet of the guide pipe (311), the support frame (101) is equipped with a control cabinet (2), and the air inlet of the fan (116) is connected to the air outlet of the conveying pipe (313).

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