In-tunnel air purification equipment for tunnel

Abstract

The invention relates to the technical field of in-tunnel air purification, in particular to in-tunnel air purification equipment for a tunnel, which comprises a shell, a rotating speed adjusting mechanism is mounted in the shell, the rotating speed adjusting mechanism comprises a mounting frame, and the mounting frame is fixedly mounted on the side part of the shell. Fan blades are rotatably mounted in the mounting frame, a variable-speed belt wheel is rotatably mounted on the side portion of the mounting frame and fixedly connected with the fan blades, the first motor is fixedly mounted at the top of the shell, and a first conical plate is fixedly mounted at the output end of the first motor; and a rotating shaft is fixedly mounted at the side part of the first conical plate. Through the arrangement of the rotating speed adjusting mechanism, the rotating speed of the fan blades can be increased along with increase of dust on the surface of the filter element, after dust is accumulated on the filter element, the air circulation resistance can be remarkably increased, the rotating speed of the fan blades is automatically increased, resistance loss is offset, the air volume is kept at a target value, and it is ensured that the air exchange efficiency in a tunnel is unchanged.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification in tunnels, and specifically to an air purification device for tunnels used in tunnels. Background Art

[0002] With the rapid development of transportation infrastructure construction, tunnels, as an important part of the modern transportation network, are increasing in number and length.

[0003] The fan blade speed of existing devices is usually a fixed parameter and cannot be adjusted according to the amount of dust on the filter element. When the dust on the surface of the filter element gradually increases and the resistance increases, the fan speed cannot be correspondingly increased, resulting in a significant decrease in the air volume and a reduction in the purification efficiency, making it difficult to meet the real-time purification requirements of pollutants in the tunnel. Summary of the Invention

[0004] To make up for the above deficiencies, the present invention provides an air purification device for tunnels used in tunnels that overcomes the above technical problems or at least partially solves the above problems.

[0005] The present invention is implemented as follows: The present invention provides an air purification device for tunnels used in tunnels, including a housing. A speed adjustment mechanism is installed inside the housing, and the speed adjustment mechanism includes: A mounting frame, the mounting frame is fixedly installed on the side of the housing. A fan blade is rotatably installed inside the mounting frame. A variable-speed pulley is rotatably installed on the side of the mounting frame, and the variable-speed pulley is fixedly connected to the fan blade; A first motor, the first motor is fixedly installed on the top of the housing. A first conical plate is fixedly installed at the output end of the first motor, and a rotating shaft is fixedly installed on the side of the first conical plate; A second conical plate, the second conical plate is slidably installed on the surface of the rotating shaft. A belt is provided between the first conical plate and the second conical plate, and the variable-speed pulley is connected to the first conical plate and the second conical plate through the belt.

[0006] In an embodiment of the present invention, a fixing frame is fixedly installed inside the housing, a filter element is fixedly installed inside the fixing frame, an adjustment box is fixedly installed on the top of the housing, air pipes are communicated on both sides of the adjustment box, the two air pipes are respectively arranged on both sides of the fixing frame, and an elastic partition is fixedly installed inside the adjustment box.

[0007] In an embodiment of the present invention, a first spring is fixedly installed on the side of the elastic partition, a toothed plate is fixedly installed on the other side of the elastic partition, a first gear is rotatably installed at the bottom of the inner cavity of the adjustment box, the first gear meshes with the toothed plate, a worm is fixedly installed on the top of the first gear, and a worm gear is rotatably installed on the side wall of the inner cavity of the adjustment box, and the worm gear meshes with the worm.

[0008] In an embodiment of the present invention, a sliding groove is opened at the top of the outer shell, a push plate is slidably installed inside the sliding groove, the push plate is movably connected to the rotating shaft, a first threaded rod is fixedly installed on the side of the push plate, a first threaded cylinder is rotatably installed on the side of the adjustment box, the first threaded cylinder is fixedly connected to the worm gear, and the first threaded cylinder is threadedly connected to the first threaded rod.

[0009] In an embodiment of the present invention, a dredging mechanism is installed inside the outer shell. The dredging mechanism includes an adjustment cylinder. The adjustment cylinder is fixedly installed at the bottom of the outer shell. The two sides of the adjustment cylinder are connected to the inside of the outer shell through air pipes. A ring is fixedly installed inside the adjustment cylinder, a sliding rod is slidably installed inside the ring, there are multiple sliding rods, and a piston plate is fixedly installed on the top of the multiple sliding rods.

[0010] In an embodiment of the present invention, a truss is fixedly installed on the top of the adjustment cylinder, a pressure sensor is fixedly installed at the bottom of the truss, a second spring is arranged between the pressure sensor and the piston plate, a limiting plate is fixedly installed at the bottom of the multiple sliding rods, and a third spring is sleeved on the surface of the multiple sliding rods. The third spring is arranged between the limiting plate and the ring.

[0011] In an embodiment of the present invention, an air inlet plate is fixedly installed inside the outer shell. A plurality of air inlet pipes are arranged on the surface of the air inlet plate. An electromagnetic valve is arranged inside the air inlet pipe. An installation groove is opened inside the air inlet plate. A first rotating plate is rotatably installed inside the installation groove. The first rotating plate is fixedly connected to a variable speed pulley. A plurality of slots are opened on the surface of the first rotating plate.

[0012] In an embodiment of the present invention, a mounting plate is rotatably installed inside the installation groove. A storage groove is opened on the surface of the mounting plate. A plug pin is slidably installed inside the storage groove. A mounting post is fixedly installed at the bottom of the plug pin. The mounting post is slidably connected to the storage groove. A fourth spring is sleeved on the surface of the mounting post.

[0013] In one embodiment of the present invention, a fixing ring is rotatably installed on the surface of the mounting plate, the fixing ring is fixedly connected to the mounting groove, a toggle rod is rotatably installed on the side of the fixing ring, a connecting plate is fixedly installed on the side of the toggle rod, a linkage rod is rotatably installed on the side of the connecting plate, a second motor is fixedly installed on the side of the air inlet plate, the second motor is connected to the pressure sensor through an electrical signal, a second rotating plate is fixedly installed on the output end of the second motor, and the end of the second rotating plate is rotatably connected to the linkage rod.

[0014] In one embodiment of the present invention, a connecting shaft is fixedly installed on the side of the mounting plate, a rotating disk is fixedly installed on the end of the connecting shaft, a side plate is fixedly installed on the side of the fixed frame, two side plates are provided, and limiting frames are fixedly installed on the surfaces of the two side plates, a connecting rod is rotatably installed at the eccentric part of the rotating disk, a hammer rod is rotatably installed on the side of the connecting rod, the hammer rod is slidably connected to the limiting frame, and a collecting box is fixedly installed on the bottom of the outer shell, and the collecting box is communicated with the interior of the outer shell.

[0015] The present invention provides a tunnel air purification device for use in a tunnel, and its beneficial effects include: 1. By setting the speed regulating mechanism, the speed of the fan blades can be increased as the dust on the surface of the filter element increases. After the filter element is covered with dust, its air circulation resistance will increase significantly. When the resistance increases, the fan blade speed will be automatically increased to offset the resistance loss and maintain the air volume at the target value, ensuring that the air exchange efficiency in the tunnel remains unchanged. If the fan blade speed is fixed, the air volume will decrease as the resistance increases, resulting in untimely purification of pollutants in the tunnel.

[0016] 2. Through the setting of the dredging mechanism, the dust on the surface of the filter element can be cleaned by knocking, and the knocking speed matches the fan speed. When the filter element is completely blocked, the fan speed reaches the maximum, and the knocking speed at this time increases. As the dust on the surface of the filter element is gradually cleaned, the knocking speed will also decrease. By sensing the load state of the filter element in real time and dynamically adjusting the cleaning speed strategy, the inefficiency and loss problems of traditional fixed-frequency cleaning are solved.

[0017] 3. Through the setting of pressure sensor and air inlet pipe, the air inlet pipe can be closed during knocking cleaning. After closing the air inlet pipe, the airflow before and after the filter element is temporarily interrupted, and the dust shaken off by knocking will not be blown back to the surface of the filter element by the external airflow, ensuring more thorough cleaning. When there is no airflow interference, dust is more likely to fall off from the pores of the filter element and fall into the inside of the collection box, avoiding dust suspension or secondary adsorption inside the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure provided by the embodiment of the present invention; Figure 2 It is a schematic diagram of the overall rear view structure provided by the embodiment of the present invention; Figure 3 It is a schematic diagram of the internal structure of the housing provided by the embodiment of the present invention; Figure 4 It is a schematic diagram of the internal structure of the adjustment box provided by the embodiment of the present invention; Figure 5 It is a schematic diagram of the structure of the dredging mechanism provided by the embodiment of the present invention; Figure 6 It is a schematic diagram of the internal structure of the installation groove provided by the embodiment of the present invention; Figure 7 It is a schematic diagram of the structure of the first rotating plate provided by the embodiment of the present invention; Figure 8 It is a schematic diagram of the structure of the variable speed pulley provided by the embodiment of the present invention; Figure 9 It is a schematic diagram of the internal structure of the adjustment cylinder provided by the embodiment of the present invention; Figure 10 provided by the embodiment of the present invention Figure 4 Schematic diagram of the enlarged structure of part A in

[0020] In the figure: 1. housing; 2. speed regulating mechanism; 201. mounting frame; 202. fan blade; 203. speed-changing pulley; 204. first motor; 205. first conical plate; 206. rotating shaft; 207. second conical plate; 208. fixing frame; 209. filter element; 210. regulating box; 211. air pipe; 212. elastic partition; 213. first spring; 214. tooth plate; 215. first gear; 216. worm; 217. worm wheel; 218. sliding groove; 219. push plate; 220. first threaded rod; 221. first threaded cylinder; 3. dredging mechanism; 301. regulating cylinder; 302. ring; 303. sliding rod; 304. piston plate ; 305, truss; 306, pressure sensor; 307, second spring; 308, limit plate; 309, third spring; 310, air inlet plate; 311, air inlet pipe; 312, mounting slot; 313, first rotating plate; 314, slot; 315, mounting plate; 316, storage slot; 317, latch; 318, mounting column; 319, fourth spring; 320, fixing ring; 321, toggle rod; 322, connecting plate; 323, linkage rod; 324, second motor; 325, second rotating plate; 326, connecting shaft; 327, rotating disk; 328, side plate; 329, limit frame; 330, connecting rod; 331, hammer rod; 332, collection box. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Reference Figures 1 - 10, this technical solution provides a tunnel air purification device for use in a tunnel, specifically including a housing 1. Inside the housing 1, a speed adjustment mechanism 2 is installed. The speed adjustment mechanism 2 includes a mounting frame 201, a first motor 204, and a second conical plate 207. The mounting frame 201 is fixedly installed on the side of the housing 1. Inside the mounting frame 201, a fan blade 202 is rotatably installed. On the side of the mounting frame 201, a variable-speed pulley 203 is rotatably installed. The variable-speed pulley 203 is composed of two conical plates with variable distance. When the pressure between the two conical plates increases, the distance between the two conical plates widens, and the rotation radius of the variable-speed pulley 203 decreases. Conversely, the rotation radius of the variable-speed pulley 203 can be increased. The variable-speed pulley 203 is fixedly connected to the fan blade 202. The first motor 204 is fixedly installed on the top of the housing 1. The output end of the first motor 204 is fixedly installed with a first conical plate 205. On the side of the first conical plate 205, a rotating shaft 206 is fixedly installed. The second conical plate 207 is slidably installed on the surface of the rotating shaft 206. A belt is provided between the first conical plate 205 and the second conical plate 207. The belt is a V-belt, and the slope of the V-surface is the same as the slopes of the first conical plate 205 and the second conical plate 207. The variable-speed pulley 203 is connected to the first conical plate 205 and the second conical plate 207 through the belt. When the first motor 204 is started, the first motor 204 can drive the first conical plate 205 to rotate. The rotating first conical plate 205 can drive the rotating shaft 206 to rotate. The rotating rotating shaft 206 can drive the second conical plate 207 to rotate, so that the first conical plate 205 and the second conical plate 207 rotate synchronously. The rotation of the first conical plate 205 and the second conical plate 207 can drive the belt and the variable-speed pulley 203 to rotate. Since the second conical plate 207 is slidably installed on the surface of the rotating shaft 206, the distance between the second conical plate 207 and the first conical plate 205 can be changed. Inside the housing 1, a fixing frame 208 is fixedly installed. Inside the fixing frame 208, a filter element 209 is fixedly installed. On the top of the housing 1, an adjustment box 210 is fixedly installed. Both sides of the adjustment box 210 are communicated with air pipes 211. The two air pipes 211 are respectively arranged on both sides of the fixing frame 208. Inside the adjustment box 210, an elastic partition 212 is fixedly installed. On the side of the elastic partition 212, a first spring 213 is fixedly installed. On the other side of the elastic partition 212, a toothed plate 214 is fixedly installed. At the bottom of the inner cavity of the adjustment box 210, a first gear 215 is rotatably installed. The first gear 215 meshes with the toothed plate 214. On the top of the first gear 215, a worm 216 is fixedly installed. On the side wall of the inner cavity of the adjustment box 210, a worm gear 217 is rotatably installed. The worm gear 217 meshes with the worm 216. On the top of the housing 1, a sliding groove 218 is opened. Inside the sliding groove 218, a push plate 219 is slidably installed. The push plate 219 is movably connected to the rotating shaft 206. On the side of the push plate 219, a first threaded rod 220 is fixedly installed,A first threaded cylinder 221 is rotatably installed on the side of the adjustment box 210. The first threaded cylinder 221 is fixedly connected to the worm gear 217. The first threaded cylinder 221 is threadedly connected to the first threaded rod 220. When the fan blade 202 sucks the air inside the tunnel into the inside of the housing 1, the dust in the air will be filtered by the filter element 209. During periods with relatively high pollution, there is more dust in the air. Therefore, more dust will be filtered by the filter element 209, and the amount of dust remaining on the surface of the filter element 209 will also be more. As a result, it will cause blockage to the ventilation of the filter element 209. When the amount of dust on the filter element 209 increases, the air pressure in front of the filter element 209 also increases. The air pressure enters the inside of the adjustment box 210 through the air pipe 211, pressurizes the elastic partition 212, and causes the elastic partition 212 to deform. The deformed elastic partition 212 can drive the toothed plate 214 to move. The movement of the toothed plate 214 can drive the first gear 215 to rotate, and then can drive the worm 216 to rotate. The rotating worm 216 can drive the worm gear 217 to rotate. Driven by the worm gear 217, the first threaded cylinder 221 can be driven to rotate. The rotation of the first threaded cylinder 221 can cause the first threaded rod 220 to move. Therefore, the push plate 219 can be driven to move. The push plate 219 can squeeze the second conical plate 207, making the distance between the first conical plate 205 and the second conical plate 207 smaller. As the distance between the first conical plate 205 and the second conical plate 207 decreases, the belt slides on the inclined surfaces of the first conical plate 205 and the second conical plate 207, increasing the rotation radius of the belt. Since the total length of the belt remains unchanged, under the pressure of the belt, the distance between the two conical plates of the variable-speed pulley 203 becomes wider, and the rotation radius of the belt becomes smaller. Since the rotation radius of the driving wheel increases while the rotation radius of the driven wheel decreases, the rotation speed of the fan blade 202 can be increased, the air intake volume can be increased, and the air output volume at the air outlet can be ensured to remain unchanged. Through the setting of the rotation speed adjustment mechanism 2, the rotation speed of the fan blade 202 can be controlled according to the amount of dust in the air. When there is more dust in the air, the rotation speed of the fan blade 202 becomes faster, accelerating the purification speed of the air inside the tunnel. When there is less dust, the fan blade 202 remains at its original rotation speed unchanged.,

[0023] Refer to Figures 1 - 10, this embodiment also proposes that a dredging mechanism 3 is installed inside the housing 1. The dredging mechanism 3 includes an adjustment cylinder 301, which is fixedly installed at the bottom of the housing 1. Both sides of the adjustment cylinder 301 are connected to the inside of the housing 1 through air pipes 211. A ring 302 is fixedly installed inside the adjustment cylinder 301. A sliding rod 303 is slidably installed inside the ring 302. There are multiple sliding rods 303. A piston plate 304 is fixedly installed at the top of the multiple sliding rods 303. A truss 305 is fixedly installed at the top of the adjustment cylinder 301. A pressure sensor 306 is fixedly installed at the bottom of the truss 305. A second spring 307 is arranged between the pressure sensor 306 and the piston plate 304. A limiting plate 308 is fixedly installed at the bottom of the multiple sliding rods 303. A third spring 309 is sleeved on the surface of the multiple sliding rods 303. The third spring 309 is arranged between the limiting plate 308 and the ring 302. An air inlet plate 310 is fixedly installed inside the housing 1. Multiple air inlet pipes 311 are arranged on the surface of the air inlet plate 310. An electromagnetic valve is arranged inside the air inlet pipe 311. An installation groove 312 is opened inside the air inlet plate 310. A first rotating plate 313 is rotatably installed inside the installation groove 312. The first rotating plate 313 is fixedly connected to the variable speed pulley 203. Multiple slots 314 are opened on the surface of the first rotating plate 313. When the filter element 209 is blocked, under the action of air pressure, the piston plate 304 moves inside the adjustment cylinder 301, so as to compress the third spring 309 and the second spring 307. The setting of the second spring 307 enables the pressure sensor 306 to be subjected to pressure when the piston plate 304 moves. When the pressure sensor 306 reaches the threshold value, it means that the filter element 209 is completely blocked by dust at this time. At this time, the electromagnetic valve is started to close the air inlet pipe 311, so that the polluted air from the outside no longer contacts the filter element 209. When the dust on the surface of the filter element 209 gradually decreases, the pressure received by the pressure sensor 306 also slowly decreases. When the pressure sensor 306 no longer receives pressure, the electromagnetic valve is reopened to allow the outside air to enter the inside of the housing 1 again.

[0024] Refer to Figures 1 - 10, in this embodiment, it is further proposed that an installation plate 315 is rotatably installed inside the installation groove 312. A storage groove 316 is formed on the surface of the installation plate 315. A plug 317 is slidably installed inside the storage groove 316. An installation column 318 is fixedly installed at the bottom of the plug 317. The installation column 318 is slidably connected to the storage groove 316. A fourth spring 319 is sleeved on the surface of the installation column 318. A fixing ring 320 is rotatably installed on the surface of the installation plate 315. The fixing ring 320 is fixedly connected to the installation groove 312. A toggle rod 321 is rotatably installed on the side of the fixing ring 320. The toggle rod 321 squeezes the plug 317, so that the plug 317 is outside the storage groove 316. A connecting plate 322 is fixedly installed on the side of the toggle rod 321. A linkage rod 323 is rotatably installed on the side of the connecting plate 322. A second motor 324 is fixedly installed on the side of the air inlet plate 310. The second motor 324 is communicatively connected to the pressure sensor 306 through an electrical signal. When the pressure value of the pressure sensor 306 reaches the threshold, the second motor 324 is started. A second rotating plate 325 is fixedly installed at the output end of the second motor 324. The end of the second rotating plate 325 is rotatably connected to the linkage rod 323. The second motor 324 can drive the second rotating plate 325 to rotate. The rotating second rotating plate 325 can drive the linkage rod 323 to rotate. Therefore, the connecting plate 322 can be rotated, and then the toggle rod 321 can be rotated. The rotation of the toggle rod 321 can separate the plug 317 from the toggle rod 321. The plug 317 slides inside the storage groove 316 under the action of the fourth spring 319, so that the plug 317 can be inserted into the slot 314, and the plug 317 can rotate together with the first rotating plate 313. The rotation of the first plug 317 drives the installation plate 315 to rotate under the action of the storage groove 316. A connecting shaft 326 is fixedly installed on the side of the installation plate 315. A rotating disk 327 is fixedly installed at the end of the connecting shaft 326. A side plate 328 is fixedly installed on the side of the fixing frame 208. There are two side plates 328. Limit frames 329 are fixedly installed on the surfaces of the two side plates 328. A connecting rod 330 is rotatably installed at the eccentric position of the rotating disk 327. A hammering rod 331 is rotatably installed on the side of the connecting rod 330. The hammering rod 331 is slidably connected to the limit frame 329. A collection box 332 is fixedly installed at the bottom of the housing 1. The collection box 332 is communicatively connected to the inside of the housing 1. The rotation of the installation plate 315 can drive the connecting shaft 326 to rotate. The rotation of the connecting shaft 326 can drive the rotating disk 327 to rotate. The rotation of the rotating disk 327 can drive the connecting rod 330 to rotate, and then the hammering rod 331 can move up and down inside the limit frame 329, so as to hammer the side plate 328 and make the side plate 328 vibrate. The vibration of the side plate 328 can make the entire fixing frame 208 vibrate. Therefore, the dust on the surface of the filter element 209 can fall into the collection box 332 for collection. With the setting of the entire dredging mechanism 3,When there is too much dust on the surface of the filter element 209 and the pressure received by the pressure sensor 306 reaches the threshold value, first close the air inlet pipe 311, and then start the second motor 324 to make the hammering rod 331 hammer the surface of the filter element 209, so that the dust on the surface of the filter element 209 falls into the interior of the collection box 332. As the dust on the surface of the filter element 209 decreases, the pressure received by the pressure sensor 306 slowly decreases. When the dust is cleaned to a certain extent, that is, when the pressure sensor 306 is no longer under pressure, at this time, reverse the second motor 324 to stop the hammering rod 331 from hammering the filter element 209, and reopen the air inlet pipe 311 to make the entire purification equipment resume the air purification work again.

[0025] Specifically, the working process or principle of the air purification equipment for tunnels is as follows: When the first motor 204 starts, the first motor 204 can drive the first conical plate 205 to rotate. The rotating first conical plate 205 can drive the rotating shaft 206 to rotate. The rotating rotating shaft 206 can drive the second conical plate 207 to rotate, causing the first conical plate 205 and the second conical plate 207 to rotate synchronously. The rotation of the first conical plate 205 and the second conical plate 207 can drive the belt and the variable-speed pulley 203 to rotate. Since the second conical plate 207 is slidably mounted on the surface of the rotating shaft 206, the distance between the second conical plate 207 and the first conical plate 205 can be changed. When the fan blade 202 sucks the air inside the tunnel into the interior of the housing 1, the dust in the air will be filtered by the filter element 209. During periods of greater pollution, there is more dust in the air, so more dust will be filtered by the filter element 209, and the amount of dust remaining on the surface of the filter element 209 will also be more. Therefore, it will block the ventilation of the filter element 209. As the amount of dust on the filter element 209 increases, the air pressure in front of the filter element 209 also increases. The air pressure enters the interior of the adjustment box 210 through the air pipe 211, pressurizes the elastic partition 212, causing the elastic partition 212 to deform. The deformed elastic partition 212 can drive the toothed plate 214 to move. The movement of the toothed plate 214 can drive the first gear 215 to rotate, and then drive the worm 216 to rotate. The rotating worm 216 can drive the worm gear 217 to rotate. Driven by the worm gear 217, the first threaded barrel 221 can be driven to rotate. The rotation of the first threaded barrel 221 can cause the first threaded rod 220 to move, so the push plate 219 can be driven to move. The push plate 219 can squeeze the second conical plate 207, reducing the distance between the first conical plate 205 and the second conical plate 207. As the distance between the first conical plate 205 and the second conical plate 207 decreases, the belt slides on the inclined surfaces of the first conical plate 205 and the second conical plate 207, increasing the rotation radius of the belt. Since the total length of the belt remains unchanged, under the pressure of the belt, the distance between the two conical plates of the variable-speed pulley 203 widens, reducing the rotation radius of the belt. Since the rotation radius of the driving wheel increases while the rotation radius of the driven wheel decreases, the rotation speed of the fan blade 202 can be increased, increasing the air intake volume to ensure that the air output volume at the air outlet remains unchanged.

[0026] When the filter element 209 is blocked, the piston plate 304 moves inside the regulating cylinder 301 under the action of air pressure, so that the third spring 309 and the second spring 307 can be compressed. The setting of the second spring 307 can make the pressure sensor 306 be affected by pressure when the piston plate 304 moves. When the pressure sensor 306 reaches the threshold value, it means that the filter element 209 is completely blocked by dust. At this time, the solenoid valve is started to close the air inlet pipe 311, so that the polluted air from the outside no longer contacts the filter element 209. When the dust on the surface of the filter element 209 gradually decreases, the pressure on the pressure sensor 306 also slowly decreases. When the pressure sensor 306 is no longer under pressure, the solenoid valve is reopened to allow the outside air to re-enter. Inside the housing 1, when the pressure value of the pressure sensor 306 reaches a threshold value, the second motor 324 is started, and the second motor 324 can drive the second rotating plate 325 to rotate, and the rotating second rotating plate 325 can drive the linkage rod 323 to rotate, so that the connecting plate 322 can be rotated, and then the toggle rod 321 can be rotated, and the rotation of the toggle rod 321 can separate the latch 317 from the toggle rod 321, and the latch 317 slides inside the storage groove 316 under the action of the fourth spring 319, so that the latch 317 can be inserted into the inside of the slot 314, so that the latch 317 can rotate together with the first rotating plate 313, and the rotation of the first latch 317 drives the mounting plate 315 to rotate under the action of the storage groove 316.

[0027] The rotation of the mounting plate 315 can drive the connecting shaft 326 to rotate, the rotation of the connecting shaft 326 can drive the rotating disk 327 to rotate, the rotation of the rotating disk 327 can drive the connecting rod 330 to rotate, and then drive the hammer rod 331 to move up and down inside the limiting frame 329, so as to hammer the side plate 328 to vibrate the side plate 328, and the vibration of the side plate 328 can make the entire fixing frame 208 vibrate, so that the dust on the surface of the filter element 209 can fall into the inside of the collecting box 332 for collection. Under the setting of the entire dredging mechanism 3, when there is too much dust on the surface of the filter element 209, the pressure sensor 332 is used to remove the dust. When the pressure on the pressure sensor 306 reaches a threshold value, the air inlet pipe 311 is first closed, and then the second motor 324 is started, so that the hammer rod 331 hammers the surface of the filter element 209, so that the dust on the surface of the filter element 209 falls into the collection box 332. As the dust on the surface of the filter element 209 decreases, the pressure on the pressure sensor 306 gradually decreases. When the dust is cleaned to a certain extent, that is, the pressure sensor 306 is no longer affected by pressure, the second motor 324 is reversed at this time, so that the entire hammer rod 331 stops hammering the filter element 209, and the air inlet pipe 311 is reopened, so that the entire purification equipment can resume air purification work.

Claims

1. An air purification device for use in a tunnel, comprising a housing (1), characterized in that, Inside the housing (1), a speed regulating mechanism (2) is installed. The speed regulating mechanism (2) includes: An installation frame (201), which is fixedly installed on the side of the housing (1). Inside the installation frame (201), a fan blade (202) is rotatably installed. On the side of the installation frame (201), a variable-speed pulley (203) is rotatably installed. The variable-speed pulley (203) is fixedly connected to the fan blade (202); A first motor (204), which is fixedly installed on the top of the housing (1). The output end of the first motor (204) is fixedly installed with a first conical plate (205), and a rotating shaft (206) is fixedly installed on the side of the first conical plate (205); A second conical plate (207), which is slidably installed on the surface of the rotating shaft (206). A belt is provided between the first conical plate (205) and the second conical plate (207). The variable-speed pulley (203) is connected to the first conical plate (205) and the second conical plate (207) through the belt; Inside the housing (1), a dredging mechanism (3) is installed. The dredging mechanism (3) includes an adjustment cylinder (301); a truss (305) is fixedly installed on the top of the adjustment cylinder (301), and a pressure sensor (306) is fixedly installed at the bottom of the truss (305); An air inlet plate (310) is fixedly installed inside the housing (1), and a plurality of air inlet pipes (311) are arranged on the surface of the air inlet plate (310).

2. The tunnel air purification equipment used in a tunnel according to claim 1, characterized in that, A fixing frame (208) is fixedly installed inside the housing (1), a filter element (209) is fixedly installed inside the fixing frame (208), an adjustment box (210) is fixedly installed on the top of the housing (1), both sides of the adjustment box (210) are communicated with air pipes (211), and the two air pipes (211) are respectively arranged on both sides of the fixing frame (208). An elastic partition (212) is fixedly installed inside the adjustment box (210).

3. An air purification device for use in a tunnel according to claim 2, wherein, A first spring (213) is fixedly installed on the side of the elastic partition (212), a toothed plate (214) is fixedly installed on the other side of the elastic partition (212), a first gear (215) is rotatably installed at the bottom of the inner cavity of the adjustment box (210), the first gear (215) meshes with the toothed plate (214), a worm (216) is fixedly installed on the top of the first gear (215), a worm gear (217) is rotatably installed on the side wall of the inner cavity of the adjustment box (210), and the worm gear (217) meshes with the worm (216).

4. An air purification device for use in a tunnel according to claim 3, wherein A sliding groove (218) is opened on the top of the housing (1), a push plate (219) is slidably installed inside the sliding groove (218), the push plate (219) is movably connected to the rotating shaft (206), a first threaded rod (220) is fixedly installed on the side of the push plate (219), a first threaded cylinder (221) is rotatably installed on the side of the adjustment box (210), the first threaded cylinder (221) is fixedly connected to the worm gear (217), and the first threaded cylinder (221) is threadedly connected to the first threaded rod (220).

5. An air purification device for use in a tunnel according to claim 4, characterized in that, The regulating cylinder (301) is fixedly mounted on the bottom of the housing (1); both sides of the regulating cylinder (301) are connected to the interior of the housing (1) via an air pipe (211); a circular ring (302) is fixedly mounted inside the regulating cylinder (301); a sliding rod (303) is slidably mounted inside the circular ring (302); a plurality of sliding rods (303) are provided, and a piston plate (304) is fixedly mounted on the top of the plurality of sliding rods (303).

6. The tunnel air purification equipment used in a tunnel according to claim 5, characterized in that, A second spring (307) is arranged between the pressure sensor (306) and the piston plate (304); a limiting plate (308) is fixedly installed at the bottom of the plurality of sliding rods (303); a third spring (309) is sleeved on the surface of the plurality of sliding rods (303); and the third spring (309) is arranged between the limiting plate (308) and the ring (302).

7. The air purification equipment for a tunnel according to claim 6, characterized in that, A solenoid valve is arranged inside the air inlet pipe (311), a mounting groove (312) is provided inside the air inlet plate (310), a first rotating plate (313) is rotatably mounted inside the mounting groove (312), the first rotating plate (313) is fixedly connected to the speed change pulley (203), a slot (314) is provided on the surface of the first rotating plate (313), and a plurality of slots (314) are provided.

8. An air purification device for use in a tunnel according to claim 7, characterized in that, A mounting plate (315) is rotatably mounted inside the mounting groove (312); a receiving groove (316) is provided on the surface of the mounting plate (315); a latch (317) is slidably mounted inside the receiving groove (316); a mounting column (318) is fixedly mounted at the bottom of the latch (317); the mounting column (318) is slidably connected to the receiving groove (316); and a fourth spring (319) is sleeved on the surface of the mounting column (318).

9. The tunnel air purification equipment used in a tunnel according to claim 8, characterized in that, A fixing ring (320) is rotatably mounted on the surface of the mounting plate (315), the fixing ring (320) is fixedly connected to the mounting groove (312), a toggle rod (321) is rotatably mounted on the side of the fixing ring (320), a connecting plate (322) is fixedly mounted on the side of the toggle rod (321), a linkage rod (323) is rotatably mounted on the side of the connecting plate (322), a second motor (324) is fixedly mounted on the side of the air inlet plate (310), the second motor (324) is connected to the pressure sensor (306) via an electrical signal, a second rotating plate (325) is fixedly mounted on the output end of the second motor (324), and an end of the second rotating plate (325) is rotatably connected to the linkage rod (323).

10. The tunnel air purification device used in a tunnel according to claim 9, characterized in that, A connecting shaft (326) is fixedly installed on the side of the mounting plate (315). A rotating disk (327) is fixedly installed at the end of the connecting shaft (326). Side plates (328) are fixedly installed on the side of the fixing frame (208). There are two side plates (328). Limiting frames (329) are fixedly installed on the surfaces of the two side plates (328). A connecting rod (330) is rotatably installed at the eccentric position of the rotating disk (327). A hammering rod (331) is rotatably installed on the side of the connecting rod (330). The hammering rod (331) is slidably connected with the limiting frame (329). A collection box (332) is fixedly installed at the bottom of the housing (1). The collection box (332) is communicated with the inside of the housing (1).

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