Tunnel ventilation and purification device with intelligent early warning monitoring

Abstract

This invention belongs to the field of tunnel air purification technology, specifically a tunnel ventilation and purification device with intelligent early warning monitoring. It includes a housing, with an air intake grille fixedly connected to one side of the housing, and a fan fixedly connected to the other side of the air intake grille. Inside the housing, from left to right, are arranged a dust filter assembly, a catalytic assembly, an adsorption assembly, and an exhaust sensor assembly. An exhaust assembly is located on the surface of the housing, and all components are connected via pipes. The adsorption assembly includes an adsorption tube fixedly connected to the lower surface inside the housing, with cover plates fixedly connected to both ends. A driven tube is rotatably connected inside the cover plate, and a fixed rod is fixedly connected in a circular array inside the driven tube. This device uses a grooved wheel dial intermittent mechanism to achieve online automatic replacement of the activated carbon filter element. It can automatically trigger filter element switching based on the VOC and sulfide concentrations monitored by the exhaust sensor, eliminating the need to stop the machine to replace the filter element.

Description

Technical Field

[0001] This invention belongs to the field of tunnel air purification technology, specifically a tunnel ventilation and purification device with intelligent early warning and monitoring. Background Technology

[0002] During vehicle traffic and construction operations, tunnels continuously generate large amounts of pollutants such as particulate matter, carbon monoxide, nitrogen oxides, volatile organic compounds (VOCs), and sulfides. This can easily lead to a decline in air quality inside the tunnel, severely impacting visibility and traffic safety, and posing a threat to the health of workers and passengers in passing vehicles. Therefore, ventilation and purification systems must be installed inside tunnels to continuously ventilate and purify the polluted air, ensuring that the air quality inside the tunnel meets standards.

[0003] A patent with publication number CN117468977B discloses a bypass tunnel air purification device, including a mounting shell, an air purification mechanism inside the mounting shell, a supply fan at the bottom of the mounting shell, and a return fan on the side of the mounting shell. This invention draws air in through an air inlet shaft and a return fan; the incoming air is purified by the air purification mechanism and then exhausted through an exhaust shaft and a supply fan.

[0004] The aforementioned existing air purification device is equipped with a dust filtration component, a catalytic component, and an adsorption component. The dust filtration component and the catalytic component purify the dust and harmful pollutants carried in the gas. The purified gas then enters the adsorption component and passes through its internal activated carbon filter to adsorb organic VOCs and sulfides.

[0005] During use, the activated carbon filter element gradually reaches adsorption saturation due to prolonged adsorption of pollutants, causing its adsorption capacity to continuously decline. As a result, it can no longer effectively capture organic VOCs and sulfides in the flue gas. Therefore, the activated carbon filter element needs to be replaced after the system is shut down. The filter element replacement operation is cumbersome and will interrupt the continuous operation of the tunnel ventilation and purification system, thus causing a reduction in ventilation and purification efficiency.

[0006] Therefore, the present invention provides a tunnel ventilation and purification device with intelligent early warning monitoring. Summary of the Invention

[0007] To overcome the shortcomings of existing technologies and solve the problem mentioned in the background technology that the activated carbon filter cartridge requires shutdown to complete the replacement operation, the filter cartridge replacement operation is cumbersome, and it will interrupt the continuous operation of the tunnel ventilation and purification system, thereby reducing the ventilation and purification efficiency.

[0008] The technical solution adopted by the present invention to solve its technical problem is as follows: The tunnel ventilation and purification device with intelligent early warning monitoring of the present invention includes a shell, an air intake grille fixedly connected to one side of the shell, a fan fixedly connected to one side of the air intake grille, a dust filter assembly, a catalytic assembly, an adsorption assembly, and an exhaust sensor assembly arranged sequentially from left to right inside the shell, an exhaust assembly arranged on the surface of the shell, and all the assemblies are connected to each other through pipes, the adsorption assembly includes an adsorption tube fixedly connected to the lower surface inside the shell, a cover plate fixedly connected to both ends of the adsorption tube, a driven tube rotatably connected inside the cover plate, a fixed rod fixedly connected in a ring array inside the driven tube, a moving block symmetrically slidably connected to the surface of each fixed rod, a gripper fixedly connected to one end of each moving block, an activated carbon filter element arranged inside the gripper, a connection port fixedly connected to both ends of the activated carbon filter element, a moving tube slidably connected to the surface of the connection port, a groove provided between the activated carbon filter element and the moving tube, the gripper being located inside the groove, and a control cabinet fixedly connected to the upper surface of the inner wall of the shell.

[0009] Preferably, the exhaust assembly includes a plurality of exhaust brackets fixedly connected to the outer wall of the housing, each exhaust bracket having a spherical air vent rotatably connected inside, and an exhaust pipe fixedly connected to one end of each exhaust bracket, one end of the exhaust pipe being fixedly connected to one end of the exhaust sensor assembly.

[0010] Preferably, a sliding frame is fixedly connected to the surface of the adsorption tube, a feed pipe is fixedly connected to one end of the sliding frame, a discharge frame is fixedly connected to the surface of the adsorption tube and to the bottom side of the sliding frame, a load-bearing plate is fixedly connected to the inner surface of the discharge frame, a gravity sensor is fixedly connected to the lower surface of the load-bearing plate, a valve plate is rotatably connected to the inside of the discharge frame and to one side of the load-bearing plate, and a flip cover is rotatably connected to the surface of the outer shell and to one side of the exhaust frame.

[0011] Preferably, a fixing frame is fixedly connected to one side of each cover plate, the interior of the fixing frame is rotatably connected to the surface of the driven tube, a mating interface is provided at one end of the inner side of the cover plate, and the outer diameter of the mating interface matches the inner diameter of the moving tube, a sealing port is provided at one end of the inner side of the cover plate and on the side of the mating interface, and guide frames are symmetrically fixedly connected to the lower inner surface of the outer shell.

[0012] Preferably, the surface of the fixed rod is symmetrically fixedly connected with fixed blocks, the outer wall of each fixed block is slidably connected with a slider, one end of each slider is slidably connected with a wedge, a connecting rod is rotatably connected between the slider and the moving block, the inside of the guide frame is rotatably and slidably connected with a drive rod, and one end of each of the several wedges is fixedly connected to the surface of the drive rod.

[0013] Preferably, a motor frame is fixedly connected to the inner wall of the housing on the side away from the exhaust assembly, a dual-axis motor is fixedly connected inside the motor frame, a dial is fixedly connected to one output end of the dual-axis motor, a grooved wheel is fixedly connected to the surface of the drive rod, a first gear is fixedly connected to the other output end of the dual-axis motor, and a second gear is rotatably connected to the inner wall of the housing on the side of the motor frame, the first gear and the second gear meshing with each other.

[0014] Preferably, the surface of the second gear is provided with a limiting groove, and two annular baffles are fixedly sleeved on one end of the drive rod near the second gear. Guide rods are symmetrically fixedly connected to the surface of the guide frame, and annular guide plates are slidably connected to the surface of the guide rods. The guide plates are engaged between the two baffles, and the width between the two baffles matches the width of the guide plate.

[0015] Preferably, a connecting rod is fixedly connected to the side of the guide plate near the second gear, and a limit rod is fixedly connected to one end of each connecting rod, with one end of the limit rod slidingly connected to the inside of the limit groove.

[0016] Preferably, the limiting groove includes an initial segment, a forward segment is provided on one side of the initial segment, a plug-in segment is provided on one side of the forward segment, and a backward segment is provided on one side of the plug-in segment, wherein the initial segment, forward segment, plug-in segment, and backward segment of the limiting groove are connected end to end in sequence.

[0017] Preferably, each of the movable blocks has a ball bearing slidably connected inside, each of the movable blocks has a chamfered edge on its surface, and a boss is fixedly connected to the back side of the cover plate and the side located at the sealing opening.

[0018] The beneficial effects of this invention are as follows: 1. The tunnel ventilation and purification device with intelligent early warning monitoring described in this invention realizes online automatic replacement of activated carbon filter elements through the intermittent mechanism of the grooved wheel dial. It can automatically trigger the filter element station switching based on the VOC and sulfide concentrations monitored by the exhaust sensor, without the need to stop the machine to replace the filter elements, ensuring continuous operation of tunnel ventilation and purification, thereby improving the purification effect. At the same time, it can also determine the saturation state of activated carbon to avoid excessive emissions of pollutants. Waste filter elements are automatically unloaded by gravity, reducing maintenance costs.

[0019] 2. The tunnel ventilation and purification device with intelligent early warning monitoring described in this invention utilizes a dual-axis motor to synchronously output power from both ends, driving the intermittent rotation mechanism of the grooved wheel and the wedge block inclined surface telescopic mechanism respectively, to achieve sequential linkage of actions: before the filter element is rotated, the moving tube automatically exits the interface to prevent rotational scratches; after the work station is switched, the moving tube automatically inserts into the interface to form a surface seal, avoiding the vibration leakage and flue gas short circuit problems caused by simple end face contact, and improving the docking sealing performance.

[0020] 3. The tunnel ventilation and purification device with intelligent early warning monitoring described in this invention utilizes the cooperation between the inclined surface of the boss and the inclined surface of the cylinder on the moving block to simultaneously complete angle self-correction during the insertion process of the moving pipe pushed by the gripper. When there is a slight circumferential deflection of the grooved wheel, the inclined surface of the boss applies a rotational thrust to the moving block through the cylinder, automatically eliminating the angular deviation of the grooved wheel, avoiding alignment misalignment caused by the locking arc gap and equipment vibration, preventing skewed insertion of the moving pipe, poor sealing, and short circuit of flue gas, ensuring reliable surface contact between the moving pipe and the interface, and improving sealing performance and purification effect. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the internal structure of the present invention; Figure 3 This is a partial structural diagram of the dust filtration component, catalytic component, and adsorption component; Figure 4 This is a schematic diagram of the adsorption component of the present invention; Figure 5 This is a partial structural cross-sectional view of the adsorption component of the present invention; Figure 6 This is a schematic diagram of the driven tube and driving rod of the present invention; Figure 7 This is a cross-sectional view of the driven tube and drive rod of the present invention; Figure 8 This is a schematic diagram of the structure of the gripper and activated carbon filter element of the present invention; Figure 9 This is a schematic diagram of the structure of the dial and grooved wheel of the present invention; Figure 10 This is a schematic diagram of the structure of the second gear and guide rod of the present invention; Figure 11 This is a cross-sectional view of the material unloading rack of the present invention; Figure 12 This is a schematic diagram of the docking structure between the interface and the moving tube in this invention; Figure 13 This is a partial cross-sectional view of the docking structure of the movable tube and the interface of the present invention; In the diagram: 10. Outer shell; 101. Air intake grille; 11. Fan; 20. Smoke and dust filter assembly; 30. Control cabinet; 40. Catalytic assembly; 50. Adsorption assembly; 501. Cover plate; 502. Connecting interface; 503. Sealing port; 504. Boss; 505. Fixing frame; 506. Adsorption tube; 51. Drive rod; 511. Baffle; 512. Wedge; 513. Grooved wheel; 52. Driven tube; 521. Fixing rod; 522. Fixing block; 523. Slider; 524. Connecting rod; 525. Gripper; 526. Moving block; 53. Motor frame; 531. Dual-shaft motor; 532. First gear; 533. Dial; 54. Guide frame; 541. Guide rod; 542. Guide plate; 543. Connecting rod; 544. Limiting rod; 55. Second gear; 56. Limiting groove; 561. Initial section; 562. Forward section; 563. Insertion section; 564. Reverse section; 57. Feed pipe; 571. Sliding frame; 572. Flip cover; 58. Unloading frame; 581. Valve plate; 582. Load-bearing plate; 583. Gravity sensor; 60. Exhaust sensor assembly; 70. Activated carbon filter element; 71. Connection port; 72. Moving pipe; 73. Groove; 80. Exhaust frame; 81. Exhaust pipe; 82. Spherical air outlet. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] Example 1, as Figures 1 to 13 As shown in the figure, a tunnel ventilation and purification device with intelligent early warning monitoring according to an embodiment of the present invention includes a housing 10. An air intake grille 101 is fixedly connected to one end of the housing 10. A fan 11 is fixedly connected to the inner side of the air intake grille 101. The interior of the housing 10 is arranged from left to right with a smoke and dust filter assembly 20, a catalytic assembly 40, an adsorption assembly 50, and an exhaust sensor assembly 60. An exhaust assembly is arranged on the surface of the housing 10, and the components are connected to each other in sequence through pipes. Specifically, the fan 11 is used to draw external gas into the housing 10. A collecting hopper is installed on the side of the fan 11 near the inside of the housing 10. The end of the collecting hopper away from the fan 11 is connected to the air inlet of the dust filter assembly 20 through a pipe. The air outlet of the dust filter assembly 20 is connected to the air inlet of the catalytic assembly 40 through a pipe. The air outlet of the catalytic assembly 40 is connected to the air inlet of the adsorption assembly 50 through a pipe. The air outlet of the adsorption assembly 50 is connected to the air inlet of the exhaust sensor assembly 60 through a pipe. The adsorption assembly 50 includes an adsorption tube 506 fixedly connected to the lower surface inside the housing 10. Both ends of the adsorption tube 506 are fixedly connected to a cover plate 501. A driven tube 52 is rotatably connected between the two cover plates 501. Both ends of the driven tube 52 pass through the two cover plates 501 and extend to the outside. The inside of the driven tube 52 is fixedly connected to a fixed rod 521 in a ring array. Each fixed rod 521 has a moving block 526 symmetrically slidably connected to its surface. The moving block 526 is slidably connected to a fixed groove. Each moving block 526 has a clamp 525 fixedly connected to its outward side. Activated carbon filter element 70 is engaged inside two clamps 525 located near the same fixed groove. The outer wall of the driven tube 52 is provided with several fixing slots arranged in a ring, and a fixing rod 521 is fixedly installed inside each fixing slot; Specifically, each set of two adjacent clamps 525 in each fixed slot forms a group, and during normal use, each set of clamps 525 holds an activated carbon filter element 70. Both ends of the activated carbon filter element 70 are fixedly connected to a connection port 71. A movable tube 72 is slidably connected to the surface of the connection port 71. A T-shaped component is fixedly connected to the inner side of the movable tube 72. A T-shaped groove is provided on the outer wall of the connection port 71. The T-shaped component slides inside the T-shaped groove. A groove 73 is provided on the outside of the movable tube 72 for the clamp 525 to engage. The groove 73 is an annular groove. The clamp 525 is located inside the groove 73. During normal use, the end of the gripper 525 contacts the inner wall of the adsorption tube 506, while the outside of the activated carbon filter element 70 contacts the inner wall of the adsorption tube 506. The adsorption tube 506 and the activated carbon filter element 70... Figure 5 As shown, the activated carbon filter element 70 is the inscribed circle of the adsorption tube 506. When the gripper 525 drives the activated carbon filter element 70 to rotate inside the adsorption tube 506, the activated carbon filter element 70 just slides in contact with the inner wall of the adsorption tube 506. The adsorption tube 506 limits the activated carbon filter element 70 to prevent it from shaking inside the gripper 525. A control cabinet 30 is fixedly connected to the upper surface of the inner wall of the outer casing 10. A motor frame 53 is fixedly connected to the inner wall of the outer casing 10 on the side away from the exhaust assembly. A dual-axis motor 531 is fixedly connected inside the motor frame 53. Both of the two cover plates 501 have through-hole and fixedly inserted interface 502. One end of the interface 502 extends into the inner cavity of the adsorption tube 506, and the inner diameter of the interface 502 matches the outer diameter of the moving tube 72. An annular stepped groove is provided inside the interface 502 and near the adsorption tube 506. An elastic sealing gasket is provided inside the annular stepped groove. After the moving tube 72 enters the interface 502, the moving tube 72 contacts the elastic sealing gasket. As the moving tube 72 continues to move into the interface 502, the moving tube 72 performs a squeezing operation on the elastic sealing gasket. The inner diameter of the annular stepped groove is adapted to the outer diameter of the moving tube 72. The outer diameter of the mating interface 502 is larger than the outer diameter of the moving tube 72. The inner diameter of the mating interface 502 is the same as the inner diameter of the connecting port 71. An annular elastic sealing gasket is installed in the annular stepped groove. After the moving tube 72 is inserted into the annular stepped groove, one end of the moving tube 72 abuts against the annular elastic sealing gasket, squeezing the annular elastic sealing gasket to produce deformation, thereby ensuring the sealing performance after the moving tube 72 and the mating interface 502 are connected.

[0025] There are two interfaces 502, one of which is closer to the exhaust pipe 81 and is the air inlet, and the one farther away from the exhaust pipe 81 is the air outlet.

[0026] A drive rod 51 is slidably connected inside the driven tube 52. A limiting ridge is fixedly connected to the surface of the drive rod 51. Corresponding grooves are symmetrically opened at both ends of the driven tube 52. The inner wall of the corresponding groove and the surface of the limiting ridge are slidably connected. By using the matching of the limiting edge and the corresponding groove, when the drive rod 51 rotates, it can drive the driven tube 52 to rotate synchronously through the limiting edge. When the drive rod 51 moves along its axial direction under the drive of external force, the drive rod 51 slides along the inside of the two side walls of the driven tube 52, but the driven tube 52 will not move synchronously. A sliding frame 571 is fixedly connected to the surface of the adsorption tube 506, and a feeding frame 58 is fixedly connected to the surface of the adsorption tube 506 and to the bottom side of the sliding frame 571. A feeding trough is provided on the lower outer side of the adsorption tube 506. A feeding rack 58 is fixedly installed on the outside of the feeding trough. The inner cavity of the feeding rack 58 is a downward-bent cavity. The size of the feeding trough is larger than the diameter of the activated carbon filter element 70.

[0027] When the activated carbon filter element 70 rotates with the driven tube 52 to align with the feed trough, the activated carbon filter element 70 will slide down along the feed trough into the inner cavity of the feed rack 58, and then slide down along the inner cavity of the feed rack 58 to its bottom.

[0028] like Figure 1As shown, the exhaust assembly includes several exhaust brackets 80 fixedly connected to the outer wall of the housing 10. Each exhaust bracket 80 penetrates the outer wall of the housing 10 and extends to the inner wall of the housing 10. A spherical air vent 82 is rotatably connected inside each exhaust bracket 80. One end of several exhaust brackets 80 located in the inner cavity of the housing 10 is fixedly connected to an exhaust pipe 81. One end of the exhaust pipe 81 is fixedly connected to the exhaust outlet end of the exhaust sensor assembly 60.

[0029] Specifically, the gripper 525 is U-shaped, with the two ends of the gripper 525 near the inner wall of the adsorption tube 506 tilting outward to form a guide slope, which makes it easy for the gripper 525 to be inserted into the groove 73 to complete the docking. The fan 11, dust filter assembly 20, catalytic converter assembly 40, exhaust sensor assembly 60, and control cabinet 30 are all existing technologies and are electrically connected to the control cabinet 30. The control cabinet 30 is an existing control device that integrates a signal acquisition unit and a control processing unit. The control cabinet 30 receives detection signals from each sensor and compares the measured data with internal preset thresholds. When the detected parameters exceed the thresholds, the control cabinet 30 outputs a drive signal to drive each component to operate. The thresholds configured in the control cabinet 30 are: carbon monoxide 25 ppm, nitrogen dioxide 2 ppm, and a filter element pressure difference of 150 Pa for the dust filter assembly 20. These thresholds can be adaptively modified according to the tunnel space size, vehicle traffic conditions, exhaust pollutant concentration design indicators, and the model of the filter and catalytic converter assembly 40. When the detected parameters are greater than the above thresholds, the control cabinet 30 outputs a drive signal to start the fan 11, dust filter assembly 20, and catalytic converter assembly 40 for exhaust gas purification. After the parameters fall below the thresholds, the operating power of each component is stopped or reduced. The dust filter assembly 20 is a dust filter in the prior art, which consists of an automatic dust removal mechanism, a filter screen and a differential pressure sensor assembly in the prior art. During normal use, the gas is sent into the air collection hopper by the fan 11, and the gas enters the dust filter assembly 20 through the air collection hopper, where the dust in the gas is filtered through the internal filter screen. To ensure the stability of the dust filter assembly 20, an automatic cleaning mechanism is installed inside it. The automatic cleaning mechanism can use existing vibration mechanisms, rotating or oscillating cleaning brushes, etc., which are all existing automatic cleaning methods and will not be described in detail here. A differential pressure sensor assembly can also be installed at the outlet of the dust filter assembly 20. The differential pressure sensor assembly is set with a reasonable gas differential pressure range threshold, which can be adjusted according to the on-site working conditions. The system compares the measured differential pressure with the preset threshold in real time. When the differential pressure exceeds the preset threshold, the automatic cleaning mechanism is activated to clean the filter element. The filtered gas enters the differential pressure sensor assembly for monitoring, and then the gas enters the catalytic assembly 40 from the pipeline between the differential pressure sensor and the catalytic assembly 40. When smoke and dust adhere to the filter screen and cause it to become clogged, the differential pressure sensor component detects that the exhaust volume is lower than the set differential pressure range. At this time, the differential pressure sensor transmits a signal to the control cabinet 30. The control cabinet 30 receives the differential pressure signal uploaded by the differential pressure sensor component and compares the signal with a preset threshold. When the differential pressure exceeds the set threshold, the control cabinet 30 outputs a drive signal to trigger the automatic dust removal mechanism to clean the dust on the surface of the filter screen.

[0030] The purified flue gas enters the interior of the catalytic component 40, which is a conventional three-way catalytic converter. The three-way catalytic converter has a porous ceramic support inside, and the surface of the support is loaded with platinum, palladium, and rhodium precious metal catalysts. When flue gas containing carbon monoxide, hydrocarbons, and nitrogen oxides passes through the support at a suitable temperature, the precious metals act as a reaction medium, promoting the oxidation-reduction reaction of harmful components in the flue gas. Carbon monoxide and hydrocarbons are oxidized to carbon dioxide and water, and nitrogen oxides are reduced to nitrogen and oxygen, thereby converting various harmful pollutants in the flue gas into harmless gases, completing the purification. The purified gas then enters the interior of the adsorption component 50 through a pipe. The catalytic component 40 can be a three-way catalytic converter, an oxidation catalyst, etc., and the specific choice can be made according to the actual working scenario to meet the above requirements. The exhaust sensor assembly 60 is a gas sensor in the prior art, used to monitor VOC and sulfide concentrations. The exhaust sensor assembly 60 collects flue gas component data in real time and uploads it to the control cabinet 30. The control cabinet 30 compares the received VOC and sulfide concentration signals with preset concentration thresholds. When the detected flue gas pollutant concentration exceeds the set threshold, the control cabinet 30 outputs a control signal to drive the dual-axis motor 531 to operate. The preset thresholds configured in the control cabinet 30 are: VOC concentration threshold set to 80 mg / m³, and hydrogen sulfide concentration threshold set to 5 mg / m³. These thresholds can be adaptively adjusted according to the tunnel exhaust gas composition, exhaust flow rate, and the processing capacity of the catalytic converter 40.

[0031] like Figure 9As shown, a dial 533 is fixedly connected to one output end of the dual-axis motor 531 near the adsorption assembly 50, and a grooved wheel 513 is fixedly sleeved on the surface of the drive rod 51.

[0032] Specifically, both the dial 533 and the grooved wheel 513 are intermittent motion mechanisms in the prior art. The dial 533 is driven to rotate continuously by a dual-axis motor 531. The dial 533 is provided with a cylindrical pin and an outwardly protruding locking arc. The grooved wheel 513 is provided with several radial grooves and an inwardly concave locking arc. When the cylindrical pin does not enter the radial groove of the grooved wheel 513, the concave locking arc of the grooved wheel 513 is locked by the convex locking arc of the dial 533, and the grooved wheel 513 remains stationary. When the cylindrical pin rotates into the radial groove, the locking constraint is released, and the cylindrical pin pushes the grooved wheel 513 to rotate; when the cylindrical pin rotates out of the radial groove, the locking arcs cooperate again to lock the grooved wheel 513, and the grooved wheel 513 stops rotating.

[0033] When existing tunnel ventilation and purification devices are in use, they are generally equipped with a dust filter component 20, a catalytic component 40 and an adsorption component 50. The dust filter component 20 and the catalytic component 40 purify the dust and harmful pollutants carried in the gas. Then the purified gas enters the adsorption component 50 and passes through the activated carbon filter element 70 inside to adsorb organic VOCs and sulfides. During use, the activated carbon filter element 70 gradually reaches adsorption saturation due to prolonged adsorption of pollutants, causing its adsorption capacity to continuously decline. As a result, it can no longer effectively capture organic VOCs and sulfides in the flue gas. Therefore, the activated carbon filter element 70 needs to be replaced after the system is shut down. The filter element replacement operation is cumbersome and will interrupt the continuous operation of the tunnel ventilation and purification system, thus causing a reduction in ventilation and purification efficiency.

[0034] To solve the aforementioned technical problems, this device operates as follows: Under normal operating conditions, the locking arc of the dial 533 locks the grooved wheel 513, and the cylindrical pin is located outside the radial groove. At this time, the drive rod 51 will not rotate. The control cabinet 30 drives the fan 11 to work normally. The fan 11 draws the gas inside the tunnel into the interior of the outer casing 10 through the air intake grille 101. The gas passes through the dust filter assembly 20 to filter the dust it carries. The filtered gas then enters the catalytic converter 40, where the three-way catalytic converter purifies the harmful gases in the gas. The purified gas enters the interior of the connection port 71 through the gas transmission pipe via the interface 502 on the cover plate 501, and then enters the interior of the activated carbon filter element 70 through the connection port 71. The activated carbon adsorbs the organic VOCs and sulfides in the gas. After adsorption, the gas enters the interior of the exhaust sensor assembly 60 through the gas transmission pipe. The exhaust sensor assembly 60 compares the received VOC and sulfide concentration signals with the preset concentration threshold. If the concentration signal is lower than the preset concentration threshold, the purified gas is passed into the exhaust pipe 81 and the exhaust frame 80, and finally discharged through the spherical air outlet 82. When the VOC and sulfide concentration signals received by the exhaust sensor assembly 60 are higher than the preset concentration threshold, the exhaust sensor transmits the signal to the control cabinet 30. The control cabinet 30 outputs a drive signal and controls the dual-axis motor 531 to work, so that the two output shafts of the dual-axis motor 531 rotate 360 ​​degrees. The dual-axis motor 531 drives the cylindrical pin on the dial 533 to rotate through the output end. When the cylindrical pin rotates into the radial groove, the locking constraint is released. The cylindrical pin pushes the groove wheel 513 to rotate at a certain angle. The groove wheel 513 drives the drive rod 51 to rotate. The drive rod 51 drives the limiting edge to rotate. The limiting edge is in the corresponding groove at both ends of the driven tube 52, so that the limiting edge drives the driven tube 52 to rotate synchronously through the corresponding groove. The driven tube 52 drives the fixed groove inside it to rotate synchronously. The fixed rod 521 in each fixed groove rotates synchronously and intermittently. The angle of rotation of the grooved wheel 513 each time is 360 degrees divided by the number of fixed grooves, where the number of fixed grooves is the same as the number of radial grooves on the grooved wheel 513, the number of radial grooves is the same as the number of concave locking arcs, and the two are distributed alternately. Initially, the two ends of an activated carbon filter element 70 are aligned with the two ports 502 respectively. At this time, the gas can be adsorbed by the activated carbon filter element 70. When the drive rod 51 drives the driven tube 52 to rotate a certain angle, the used activated carbon filter element 70 is moved away. At this time, the next unused activated carbon filter element 70 moves between the two ports 502, and the ports at both ends of the unused activated carbon filter element 70 are aligned with the inner cavity of the two ports 502. This process is repeated. When the driven tube 52 rotates, the grippers 525 on each fixed rod 521 inside the driven tube 52 rotate synchronously. The grippers 525 drive the fully adsorbed activated carbon filter element 70 to rotate with the driven tube 52. The grippers 525 drive the fully adsorbed activated carbon filter element 70 to rotate to the unloading rack 58. At the same time, the subsequent grippers 525 drive the new activated carbon filter element 70 to rotate to the interface 502. The grippers 525 release the restriction on the fully adsorbed activated carbon filter element 70, allowing the fully adsorbed activated carbon filter element 70 to move along the unloading rack 58 under its own gravity. The material trough slides into the unloading rack 58 and then falls down along the inner cavity of the unloading rack 58 until the activated carbon filter element 70 falls into the bottom of the inner cavity of the unloading rack 58. At this time, the cylindrical pin disengages from the radial groove of the groove wheel 513, and the concave locking arc of the groove wheel 513 is locked by the convex locking arc of the dial 533. The groove wheel 513 and the drive rod 51 remain stationary, and the moving tube 72 of the newly replaced activated carbon filter element 70 is in contact with the interface 502. The gas inside the interface 502 enters the new activated carbon filter element 70 for adsorption.

[0035] This device utilizes the intermittent mechanism of the grooved wheel 513 and dial 533 to achieve online automatic replacement of the activated carbon filter element 70. It can automatically trigger the filter element station switching based on the VOC and sulfide concentrations monitored by the exhaust sensor, eliminating the need to stop the machine to replace the filter element, ensuring continuous operation of tunnel ventilation and purification, and improving the purification effect. At the same time, it can also determine the saturation state of the activated carbon to avoid excessive emissions of pollutants. Waste filter elements are automatically unloaded by gravity, reducing maintenance costs.

[0036] like Figure 1 , Figure 4 , Figure 5 and Figure 12 As shown, the length of the sliding frame 571 matches the length of the activated carbon filter element 70, and the sliding frame 571 is inclined downwards. The upper end of the sliding frame 571 is fixedly connected to the feed pipe 57, and the inner diameter of the feed pipe 57 matches the outer diameter of the activated carbon filter element 70. The inner surface of the unloading rack 58 is fixedly connected to the load-bearing plate 582, and the lower surface of the load-bearing plate 582 is fixedly connected to the gravity sensor 583. The gravity sensor 583 and the control cabinet 30 are electrically connected. The valve plate 581 is rotatably connected inside the unloading rack 58 and on one side of the load-bearing plate 582. The surface of the outer shell 10 and on one side of the exhaust rack 80 is rotatably connected to the flip cover 572.

[0037] One end of the feed pipe 57 is open and the other end is closed. The open end of the feed pipe 57 is inserted into the side of the outer casing 10. The flip cover 572 is used to seal the open end of the feed pipe 57. The innermost side of the feed pipe 57 is flush with the inner wall of the sliding frame 571. When one end of the activated carbon filter element 70 contacts the innermost side wall of the feed pipe 57, the activated carbon filter element 70 is just above the opening of the sliding frame 571. At this time, the activated carbon filter element 70 can slide down into the sliding frame 571 under its own gravity, and slide down along the sliding frame 571 into the gripper 525 in the adsorption tube 506. The surface of the adsorption tube 506 is provided with a feeding groove, and the lower end of the sliding frame 571 is fixedly inserted into the feeding groove. The included angle between the feeding groove and the discharge groove is a multiple of the angle of each intermittent rotation of the groove wheel 513.

[0038] Specifically, when a fully adsorbed activated carbon filter element 70 falls into the feeding rack 58 through the feeding chute, the activated carbon filter element 70 falls to the bottom of the feeding rack 58 and is located on the upper surface of the load-bearing plate 582. The activated carbon filter element 70 presses down on the load-bearing plate 582, and the load-bearing plate 582 transmits the pressure to the pressure sensor. The pressure sensor compares the pressure with a preset pressure threshold. The preset pressure threshold of the pressure sensor is configured to be 120N. This threshold can be adaptively adjusted according to the weight of the activated carbon filter element 70 and the structural parameters of the load-bearing plate 582. When the pressure exceeds the preset pressure threshold, the pressure signal is transmitted to the control cabinet 30. The control cabinet 30 can output a signal and remind the operator to install a new activated carbon filter element 70 and remove the fully adsorbed activated carbon filter element 70. With the activated carbon filter element 70, the user can rotate the valve plate 581 to open the feeding rack 58 and remove the fully adsorbed activated carbon filter element 70. When the user needs to install a new activated carbon filter element 70, the user can open the flip cover 572, align the new activated carbon filter element 70 with the inside of the feed pipe 57, push one end of the activated carbon filter element 70 to the innermost part of the feed pipe 57 so that the activated carbon filter element 70 cannot be pushed further, and then release the activated carbon filter element 70. The activated carbon filter element 70 falls into the inside of the clamp 525 through the inclined sliding frame 571. The clamp 525 is aligned with the groove 73 on the surface of the activated carbon filter element 70, and the inclined surfaces at both ends of the clamp 525 facilitate the positioning of the activated carbon filter element 70 into the clamp 525, thus completing the feeding operation of the activated carbon filter element 70.

[0039] Example 2, as Figures 4 to 10 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: a fixing frame 505 is fixedly connected to each of the two cover plates 501 on the side away from each other, and the two ends of the driven tube 52 are respectively rotatably connected to the two fixing frames 505. A sealing port 503 is fixedly installed in a fan shape on the inner side of the cover plate 501. The inner diameter of the sealing port 503 is adapted to the outer diameter of the moving tube 72. The side of the sealing port 503 away from the cover plate 501 and the side of the interface 502 located inside the adsorption tube 506 are on the same vertical plane. Neither the sealing port 503 nor the interface 502 will hinder the normal rotation of the activated carbon filter element 70 and the moving tube 72. No sealing port 503 is set near the discharge port. The angle between adjacent sealing ports 503 and the angle between the interface 502 and the adjacent sealing port 503 are the angles of the intermittent rotation of the groove wheel 513. The lower inner surface of the outer shell 10 is symmetrically fixed with guide frames 54. The two guide frames 54 are arranged outside the two fixed frames 505, that is, the fixed frames 505 and the adsorption tube 506 are both located between the two guide frames 54. The two ends of the drive rod 51 pass through the two guide frames 54 respectively. The drive rod 51 can move axially along the guide frame 54 and can rotate along the guide frame 54. The guide frame 54 is used to provide stable support for the drive rod 51 so that the drive rod 51 can rotate stably.

[0040] Driven tube 52 is rotatably connected to cover plate 501 and fixed frame 505, and cover plate 501 and fixed frame 505 limit driven tube 52, so driven tube 52 cannot move along the axial direction of cover plate 501 and fixed frame 505. like Figure 4 As shown, the surface of the fixed rod 521 is symmetrically fixedly connected with fixed blocks 522, the outer wall of each fixed block 522 is slidably connected with a slider 523, one end of each slider 523 is slidably connected with a wedge 512, the slider 523 and the moving block 526 are rotatably connected with a connecting rod 524, the inside of the guide frame 54 is rotatably and slidably connected with a drive rod 51, one end of several wedges 512 is fixedly connected to the surface of the drive rod 51, and the slider 523 is slidably connected to the fixed groove; Specifically, T-slots are symmetrically provided on both sides of the fixed block 522, and a T-shaped piece is fixedly installed inside the concave groove of the slider 523. The size of the T-shaped piece and the T-slot correspond to each other, and the T-shaped piece and the T-slot are slidably connected. Each slider 523 has an inclined surface on the side near the drive rod 51. The inclined surfaces of two sliders 523 in the same fixed groove have the same inclination direction and are distributed in parallel. Multiple inclined surfaces are arranged in a ring array around the drive rod 51. Each slider 523 has a convex groove inside its inclined surface. A convex block is slidably connected in each convex groove. A wedge 512 is fixedly connected to the side of the convex block. The side of the wedge 512 near the contact surface of the slider 523 is set as an inclined surface. Each wedge 512 is fixedly connected to the outside of the drive rod 51. The bottom of each movable block 526 is rotatably connected to the lower end of the side of the adjacent slider 523 by a hinge, so that the two ends of the connecting rod 524 are rotatably connected to the movable block 526 and the slider 523 respectively, and the two connecting rods 524 near the same fixed groove are symmetrically distributed. When the drive rod 51 drives the wedge block 512 to move downward toward the fixed block 522, that is, when the wedge block 512 moves toward the space between the slider 523 and the drive rod 51, the inclined surface of the wedge block 512 and the inclined surface of the slider 523 are pressed into contact. The wedge block 512 pushes the slider 523 to slide along the outside of the fixed block 522. At this time, the T-shaped part at the upper end of the slider 523 slides along the T-slot, so that the slider 523 can slide stably toward the fixed slot. When the slider 523 moves, it drives the connecting rod 524 to move synchronously. The guide plate 542 pushes the moving block 526 away from the fixed block 522. At this time, the two moving blocks 526 on the same fixed rod 521 move away from each other. The two moving blocks 526 on the same rod drive the gripper 525 on them to move away from each other. The gripper 525 pushes the moving tube 72 to extend. If the moving tube 72 is aligned with the annular stepped groove, one end of the moving tube 72 can be inserted into the annular stepped groove to complete the docking of the moving tube 72 with the interface 502.

[0041] like Figure 9 As shown, a first gear 532 is fixedly connected to the other output end of the dual-axis motor 531. A second gear 55 is rotatably connected to the inner wall of the housing 10 and the side adjacent to the motor frame 53. The first gear 532 and the second gear 55 mesh with each other. A circular block is fixedly connected to the side of the second gear 55 near the drive rod 51. A limit groove 56 is provided on the surface of the circular block. Two annular baffles 511 are fixedly sleeved at one end of the drive rod 51 near the second gear 55. Guide rods 541 are symmetrically fixedly connected to the surface of the guide frame 54. Annular guide plates 542 are slidably connected to the surface of the guide rods 541. The guide plates 542 are engaged between the two baffles 511, and the width between the two baffles 511 matches the width of the guide plate 542. A gap is formed between the two annular baffles 511 to accommodate the guide plate 542, and the baffles 511 and the guide plate 542 are in rotational contact.

[0042] Specifically, the guide rod 541 guides and limits the guide plate 542, so that the guide plate 542 can only slide along the axis of the guide rod 541. When the guide plate 542 slides, it will push the baffles 511 on both sides to move synchronously, and the baffles 511 can drive the drive rod 51 to move synchronously.

[0043] like Figure 10 As shown, a connecting rod 543 is fixedly connected to the side of the guide plate 542 near the second gear 55. One end of the connecting rod 543 is fixedly connected to a limiting rod 544, and one end of the limiting rod 544 is slidably connected to the inside of the limiting groove 56. The limiting groove 56 includes an initial section 561, a forward section 562 is provided on one side of the initial section 561, a plug-in section 563 is provided on one side of the forward section 562, and a backward section 564 is provided on one side of the plug-in section 563.

[0044] Specifically, the limiting groove 56 includes an annular initial segment 561 with a notch, that is, the initial segment 561 is an annular groove with a notch. The two ends of the initial segment 561 are symmetrically provided with inclined forward segment 562 and backward segment 564. The ends of the forward segment 562 and backward segment 564 away from the initial segment 561 gradually approach each other. The ends of the forward segment 562 and backward segment 564 away from the initial segment 561 are connected by a plug-in segment 563. The initial segment 561, forward segment 562, plug-in segment 563 and backward segment 564 of the limiting groove 56 are connected end to end in sequence.

[0045] Specifically, a ball bearing is provided at one end of the limiting rod 544, and the ball bearing is slidably connected to the inner bottom of the limiting groove 56. A roller is installed on the surface of the limiting rod 544, and the roller is slidably connected to the inner wall of the limiting groove 56. The two ends of the initial section 561 are directly connected to the forward section 562 and the backward section 564. The ends of the forward section 562 and the backward section 564 away from the initial section 561 are connected to the two ends of the insertion section 563, forming a complete cyclic guide path.

[0046] After the activated carbon filter element 70 is replaced, the moving tube 72 only has its end face against the end face of the interface 502. The two are only in line contact or partial point contact. Under the influence of tunnel airflow disturbance and equipment vibration, gaps are likely to appear on the docking end face, causing flue gas leakage. Some flue gas that has not been adsorbed by the activated carbon filter element 70 will escape directly, reducing the overall purification effect.

[0047] To avoid the aforementioned technical problems, this device is used as follows: In the initial state, the concave locking arc of the grooved wheel 513 is locked by the convex locking arc of the dial 533, the grooved wheel 513 remains stationary, the limiting rod 544 is in the insertion section 563 in the limiting groove 56, at this time the driven tube 52 does not rotate, the gripper 525 drives one end of the moving tube 72 to insert into the annular stepped groove, so that the moving tube 72 is sealed and connected with the interface 502, at this time the activated carbon filter element 70 between the two interfaces 502 can be used normally; When the VOC and sulfide concentration signals received by the exhaust sensor assembly 60 are higher than the preset concentration threshold, the exhaust sensor assembly 60 drives the dual-axis motor 531 to work through the control cabinet 30. One output end of the dual-axis motor 531 drives the dial 533 to rotate, and the other output end drives the first gear 532 to rotate. The first gear 532 rotates and the second gear 55 meshes with each other. The second gear 55 drives the circular block to rotate synchronously. The circular block drives the limiting groove 56 to rotate, so that the limiting rod 544 slides in the limiting groove 56 and slides from the insertion section 563 to the retraction section 564. At this time, the cylindrical pin on the dial 533 has not yet contacted the radial groove of the groove wheel 513. As the dial 533 and the first gear 532 continue to rotate, the second gear 55 continues to drive the limiting groove 56 to rotate. One end of the limiting rod 544 slides in the retracting section 564 inside the limiting groove 56. The retracting section 564 squeezes the roller on the surface of the limiting rod 544, causing the roller to drive the limiting rod 544 and the guide plate 542 to slide on the guide rod 541. The guide plate 542 slides away from the adsorption tube 506. At the same time, the guide plate 542 pushes the drive rod 51 to slide synchronously through the baffle 511. The drive rod 51 drives the wedge 512 on its surface to move closer to the second gear 55. The inclined surface of the wedge 512 slides on the inclined surface at one end of the slider 523. The wedge 512 drives the convex block on its inclined surface. Synchronous sliding: The convex block slides inside the convex groove on the inclined surface of one end of the slider 523. The convex block pushes the slider 523 closer to the drive rod 51. The slider 523 drives the connecting rod 524 to rotate. The other end of the connecting rod 524 pulls the moving block 526 to slide on the fixed rod 521. The moving block 526 drives the gripper 525 to move closer to the fixed block 522. The gripper 525 can then drive the moving tube 72 to slide away from the interface 502 through the groove 73. The moving tube 72 moves out of the annular stepped groove. The cylindrical pin on the dial 533 has not yet contacted the radial groove of the groove wheel 513. The limiting groove 56 continues to rotate, causing the limiting rod 544 to move into the initial section 561 of the limiting groove 56. Then, the dial 533 drives the cylindrical pin and the radial groove of the grooved wheel 513 to contact, and the cylindrical pin slides in the radial groove, pushing the grooved wheel 513 to rotate. The grooved wheel 513 drives the drive rod 51 to rotate, and the drive rod 51 drives the baffle 511 to rotate. The baffle 511 rotates synchronously on both sides of the guide plate 542. The drive rod 51 drives the driven tube 52 and the gripper 525 to rotate. The gripper 525 drives the activated carbon filter element 70 inside to rotate synchronously, so that the activated carbon filter element 70 with complete adsorption falls into the feed rack 58. The new activated carbon filter element 70 moves between the two mating interfaces 502. At this time, the limiting rod 544 is in the initial section 561 of the limiting groove 56. After the cylindrical pin rotates out of the radial groove, the locking arcs engage again to lock the grooved wheel 513, stopping its rotation. At this point, the limiting rod 544 is at the interface between the initial section 561 and the forward section 562. Therefore, as the dial 533, the first gear 532, and the second gear 55 continue to rotate, the grooved wheel 513 does not rotate. The limiting rod 544 moves from the initial section 561 into the forward section 562, pushing it closer to the adsorption tube 506. This causes the limiting rod 544 to slide the guide plate 542 on the guide rod 541. The guide plate 542 pushes the baffle 511 to slide away from the second gear 55. The baffle 511 then... Drive rod 51 resets, drive rod 51 drives wedge block 512 to reset, wedge block 512's inclined surface presses against slider 523's inclined surface, causing slider 523 to reset on fixed block 522 and drive connecting rod 524 to rotate, connecting rod 524 drives moving block 526 and gripper 525 to slide synchronously, causing gripper 525 to push moving tube 72 into interface 502 through groove 73, and the moving tube 72 of the remaining activated carbon filter element 70 enters sealing port 503 for sealing operation. When limit rod 544 slides to the interface between forward section 562 and insertion section 563, moving tube 72 enters the annular stepped groove at the end of interface 502 and presses the sealing gasket inside. When the limit rod 544 slides from the forward section 562 to the insertion section 563, the dial 533 rotates 360 degrees and continues to lock the groove wheel 513, and at this time the activated carbon filter element 70 is replaced.

[0048] This device utilizes a dual-axis motor 531 to synchronously output power from both ends, driving the intermittent rotation mechanism of the grooved wheel 513 and the inclined telescopic mechanism of the wedge block 512 respectively, to achieve sequential linkage of actions: before the filter element is rotated, the moving tube 72 automatically exits the interface 502 to prevent rotation and scraping; after the station switching is completed, the moving tube 72 automatically inserts into the interface 502 to form a surface seal, avoiding the vibration leakage and flue gas short circuit problems caused by simple end face contact, and improving the docking sealing performance.

[0049] like Figure 12 As shown, the inside of the side of the movable block 526 is slidably connected with ball bearings, and the surface of the movable block 526 is provided with chamfered bevels. A cylinder is rolled inside the chamfered bevel. A boss 504 is fixedly connected to the inside of the cover plate 501 and near the interface 502. The boss 504 includes a horizontal surface and a bevel.

[0050] During the rotation of the activated carbon filter element 70 and the moving tube 72, the moving tube 72 does not extend, and the boss 504 is not located on the path of the rotating moving tube 72. That is, the boss 504 will not hinder the normal rotation and movement of the activated carbon filter element 70 and the moving tube 72.

[0051] Specifically, the drive rod 51 is driven to rotate intermittently by the dial 533 and the grooved wheel 513. The locking arc of the dial 533 and the grooved wheel 513 can limit the operation of the grooved wheel 513. There is a slight fit gap between the convex locking arc of the dial 533 and the concave locking arc of the grooved wheel 513. When the equipment is stationary and locked, this gap will not cause obvious displacement. However, the device will continuously vibrate during continuous operation in tunnel ventilation conditions. After long-term use, under the action of external vibration, the grooved wheel 513 will generate a slight circumferential movement and angular deflection based on the locking arc fit gap. This deviation angle is extremely small and will not affect the normal indexing start and stop function of the grooved wheel 513, but it is enough to cause the moving tube 72 at the end of the filter element and the mating interface 502 on the side of the outer shell 10 to be misaligned circumferentially. The slight angular deviation will cause the moving tube 72 to be unable to be accurately coaxially inserted into the mating interface 502, resulting in problems such as insertion misalignment, skewed end face fit, and uneven compression of the sealing gasket. Ultimately, this will cause the mating position to be poorly sealed, resulting in smoke leakage, airflow short circuit, and reduced overall purification effect.

[0052] To avoid the above technical problems, this device operates as follows: When the grooved wheel 513 and the drive rod 51 have not shifted position, the moving block 526 slides on the fixed rod 521 and drives the gripper 525 to slide synchronously. When the ball on the side of the moving block 526 contacts the horizontal surface of the boss 504, and the ball slides on the horizontal surface of the boss 504, the moving tube 72 just enters the interior of the interface 502. As the moving block 526 drives the ball to slide on the horizontal surface of the boss 504, the gripper 525 slowly pushes the moving tube 72 into the interior of the interface 502. When the gap between the grooved wheel 513 and the dial 533 is large, an error will occur when the grooved wheel 513 drives the drive rod 51 to deflect. The drive rod 51 drives the driven tube 52 to rotate, and the driven tube 52 drives the moving block 526 to deflect and rotate towards one side of the unloading rack 58. Subsequently, when the moving block 526 drives the gripper 525 to slide laterally, the cylinder on the chamfered inclined surface of the moving block 526 contacts the inclined surface of the boss 504, causing the cylinder of the moving block 526 to slide on the inclined surface of the boss 504. When in motion, the inclined surface of the boss 504 presses against the cylinder, causing the cylinder to drive the moving block 526 to move upward gradually. The moving block 526 drives the driven tube 52 and the drive rod 51 to rotate synchronously. As the moving block 526 slides from the inclined surface of the boss 504 to the horizontal surface of the boss 504, the moving block 526 drives the ball to rotate and move to the horizontal surface of the boss 504. As the moving block 526 drives the ball to slide on the horizontal surface of the boss 504, the gripper 525 slowly pushes the moving tube 72 into the interior of the interface 502.

[0053] This device utilizes the engagement between the inclined surface of the boss 504 and the inclined surface of the cylinder on the moving block 526 to simultaneously complete angle self-correction during the insertion process of the moving tube 72 by the gripper 525. When there is a slight circumferential deflection in the grooved wheel 513, the inclined surface of the boss 504 applies a rotational thrust to the moving block 526 through the cylinder, automatically eliminating the angular deviation of the grooved wheel 513, avoiding alignment misalignment caused by the locking arc gap and equipment vibration, preventing the moving tube 72 from being inserted crookedly, resulting in poor sealing and short circuit of flue gas, ensuring reliable surface contact between the moving tube 72 and the interface 502, and improving sealing performance and purification effect.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A tunnel ventilation and purification device with intelligent early warning monitoring, characterized in that: The system includes a housing (10), with an air intake grille (101) fixedly connected to one side of the housing (10), and a fan (11) fixedly connected to one side of the air intake grille (101). Inside the housing (10), from left to right, are arranged a dust filter assembly (20), a catalytic assembly (40), an adsorption assembly (50), and an exhaust sensor assembly (60). An exhaust assembly is arranged on the surface of the housing (10), and all components are connected via pipes. The adsorption assembly (50) includes an adsorption tube (506) fixedly connected to the lower surface inside the housing (10). Both ends of the adsorption tube (506) are fixedly connected to cover plates (501), and a driven tube (52) is rotatably connected inside the cover plate (501). The driven tube (52) has fixed rods (521) fixedly connected in a ring array inside. Each fixed rod (521) has a moving block (526) symmetrically slidably connected to its surface. Each moving block (526) has a gripper (525) fixedly connected to one end. An activated carbon filter element (70) is provided inside the gripper (525). Both ends of the activated carbon filter element (70) are fixedly connected to a connection port (71). A moving tube (72) is slidably connected to the surface of the connection port (71). A groove (73) is provided between the activated carbon filter element (70) and the moving tube (72). The gripper (525) is located inside the groove (73). A control cabinet (30) is fixedly connected to the upper surface of the inner wall of the outer shell (10). ​ 2. The tunnel ventilation and purification device with intelligent early warning monitoring according to claim 1, characterized in that: The exhaust assembly includes several exhaust brackets (80) fixedly connected to the outer wall of the housing (10). Each exhaust bracket (80) has a spherical air vent (82) rotatably connected inside. Each exhaust bracket (80) has an exhaust pipe (81) fixedly connected to one end. One end of the exhaust pipe (81) is fixedly connected to one end of the exhaust sensor assembly (60).

3. The tunnel ventilation and purification device with intelligent early warning monitoring according to claim 2, characterized in that: A sliding frame (571) is fixedly connected to the surface of the adsorption tube (506). A feed tube (57) is fixedly connected to one end of the sliding frame (571). A discharge frame (58) is fixedly connected to the surface of the adsorption tube (506) and to the bottom side of the sliding frame (571). A load-bearing plate (582) is fixedly connected to the inner surface of the discharge frame (58). A gravity sensor (583) is fixedly connected to the lower surface of the load-bearing plate (582). A valve plate (581) is rotatably connected to the inside of the discharge frame (58) and to one side of the load-bearing plate (582). A flip cover (572) is rotatably connected to the surface of the outer shell (10) and to one side of the exhaust frame (80).

4. A tunnel ventilation and purification device with intelligent early warning monitoring according to claim 3, characterized in that: A fixing frame (505) is fixedly connected to one side of each cover plate (501). The interior of the fixing frame (505) is rotatably connected to the surface of the driven tube (52). A mating interface (502) is provided at one end of the inner side of the cover plate (501), and the outer diameter of the mating interface (502) matches the inner diameter of the moving tube (72). A sealing port (503) is provided at one end of the inner side of the cover plate (501) and on one side of the mating interface (502). Guide frames (54) are symmetrically fixedly connected to the lower inner surface of the outer shell (10).

5. A tunnel ventilation and purification device with intelligent early warning monitoring according to claim 4, characterized in that: The surface of the fixed rod (521) is symmetrically fixed to the fixed blocks (522). Each fixed block (522) has a slider (523) slidably connected to its outer wall. One end of each slider (523) is slidably connected to a wedge (512). A connecting rod (524) is rotatably connected between the slider (523) and the moving block (526). The guide frame (54) is rotatably and slidably connected to a drive rod (51). One end of each of the wedges (512) is fixedly connected to the surface of the drive rod (51).

6. A tunnel ventilation and purification device with intelligent early warning monitoring according to claim 5, characterized in that: A motor frame (53) is fixedly connected to the inner wall of the housing (10) on the side away from the exhaust assembly. A dual-axis motor (531) is fixedly connected inside the motor frame (53). A dial (533) is fixedly connected to one output end of the dual-axis motor (531). A grooved wheel (513) is fixedly connected to the surface of the drive rod (51). A first gear (532) is fixedly connected to the other output end of the dual-axis motor (531). A second gear (55) is rotatably connected to the inner wall of the housing (10) on the side of the motor frame (53). The first gear (532) and the second gear (55) mesh with each other.

7. A tunnel ventilation and purification device with intelligent early warning monitoring according to claim 6, characterized in that: The surface of the second gear (55) is provided with a limiting groove (56). Two annular baffles (511) are fixedly sleeved on one end of the drive rod (51) near the second gear (55). Guide rods (541) are symmetrically fixedly connected to the surface of the guide frame (54). An annular guide plate (542) is slidably connected to the surface of the guide rod (541). The guide plate (542) is snapped between the two baffles (511), and the width between the two baffles (511) matches the width of the guide plate (542).

8. A tunnel ventilation and purification device with intelligent early warning monitoring according to claim 7, characterized in that: A connecting rod (543) is fixedly connected to the side of the guide plate (542) near the second gear (55). One end of the connecting rod (543) is fixedly connected to a limiting rod (544), and one end of the limiting rod (544) is slidably connected to the inside of the limiting groove (56).

9. A tunnel ventilation and purification device with intelligent early warning monitoring according to claim 8, characterized in that: The limiting groove (56) includes an initial segment (561), a forward segment (562) is provided on one side of the initial segment (561), a plug-in segment (563) is provided on one side of the forward segment (562), and a backward segment (564) is provided on one side of the plug-in segment (563). The initial segment (561), forward segment (562), plug-in segment (563), and backward segment (564) of the limiting groove (56) are connected end to end in sequence.

10. A tunnel ventilation and purification device with intelligent early warning monitoring according to claim 1, characterized in that: The movable block (526) is slidably connected with ball bearings inside, and the surface of the movable block (526) is provided with chamfered bevels. The cover plate (501) is fixedly connected with a boss (504) on the back side and on the side of the sealing port (503).

Images