Tunnel dust removal device and method based on nanobubble liquid mist and multi-point monitoring

Abstract

The invention relates to the technical field of tunnel dust removal and air purification, in particular to a tunnel dust removal device and method based on nanobubble liquid mist and multi-point monitoring. Comprising two water storage tanks, angle adjusting assemblies are evenly distributed between the tops of the two water storage tanks, spraying assemblies are arranged on the two sides of each angle adjusting assembly, each angle adjusting assembly comprises a first adjusting plate and a second adjusting plate, one end of each first adjusting plate is rotationally connected with the corresponding second adjusting plate, and a telescopic rod is fixed to the other end of each first adjusting plate. According to the tunnel dust removal device and method based on nano bubble liquid mist and multi-point monitoring, through cooperation of the angle adjusting assembly, the mist spraying assembly, the water storage tank and the crawler belt, the device can move through work of the crawler belt during use; and meanwhile, the device can be driven to be integrally unfolded or folded through work of the telescopic rod, and meanwhile, a spray head can spray nanometer bubble mist liquid for dust removal through detection of a first detector and a second detector.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel dust removal and air purification, and in particular to a tunnel dust removal device and method based on nano bubble liquid mist and multi-point monitoring. Background Art

[0002] At present, there are three main methods of traditional tunnel dust removal, including ventilation dust removal, wet dust removal and dry dust removal. Figure 1 . Its main disadvantages are as follows:

[0003] Ventilation dust removal method: First, the dust removal effect is limited. Ventilation dust removal mainly reduces the dust concentration in the air by enhancing air circulation, but the effect of capturing dust particles is limited. Second, it is affected by the length of the tunnel and the wind speed in the tunnel. It is not suitable for tunnels with long lengths and poor ventilation conditions. The dust removal effect is poor and the dust removal time is long. Third, it pollutes the environment. If the dust emission is too large or the emission port is not handled properly, ventilation dust removal may emit dust into the environment, causing pollution.

[0004] Wet dust removal method: First, it cannot remove small-sized dust particles that cause pneumoconiosis; second, it cannot remove harmful gases in blasting smoke.

[0005] Dry dust removal method: First, the capture efficiency of fine particles is low; second, the dust cannot be moistened during the dust removal process, which may lead to secondary diffusion of the dust; third, dry dust removal is prone to clogging in an environment with high humidity.

[0006] As the length of tunnel excavation continues to increase, the working environment of the tunnel face is becoming increasingly difficult to guarantee. In this case, the narrowness and poor ventilation of the tunnel lead to a harsh working environment in the tunnel, which in turn endangers the health of the workers and also hinders the smooth progress of the project. Tunnel face blasting will produce harmful gases and a large amount of dust, mainly including CO, NO, a small amount of H2S, SO2 and rock dust. Since the dust is at the micron or even nano level, the traditional dust removal method has a low dust removal efficiency and may cause pollution. It is reported that the main cause of workers' pneumoconiosis is micron-sized floating particles, which cannot be eliminated by traditional methods.

[0007] Traditional dust removal methods cannot remove harmful gases generated by face blasting and micron-sized (or even smaller) particles that cause pneumoconiosis in workers. They also have low dust removal efficiency and cannot maintain air humidity for a long time. Nanobubbles can increase the ability to capture dust by increasing the number of bubbles per unit volume, wet dust of various sizes and settle it while reducing the working time of dust removal. They can use their strong oxidation properties to remove harmful bacteria and harmful gases in the air, can be suspended in the air for a long time to increase the air humidity in the tunnel, can effectively remove small-sized dust particles that cause pneumoconiosis, and their high potential can enhance the adsorption of dust particles and carry a large amount of oxygen more stably when spraying.

[0008] The conventional dust removal equipment structure cannot ensure the normal passage of personnel and vehicles in the tunnel during operation. The present invention is close to the tunnel excavation contour line during dust removal work, which can ensure that other work in the tunnel can be carried out at the same time.

[0009] The dust removal spray area of ​​traditional dust removal equipment is insufficient, the equipment occupies a large space, and the installation becomes increasingly difficult as the tunnel is excavated. The structural design of the present invention can reduce the occupied space as much as possible and increase the spray area, and can also reduce the equipment cost and simplify the difficulty of equipment installation and disassembly.

[0010] The existing dust removal scheme has a complicated construction process and low dust removal efficiency. The present invention not only realizes the automation of dust removal, but also can realize efficient dust removal.

[0011] The conventional water curtain dust removal can only act on a certain cross section of the tunnel. The crawler provided in the present invention can realize longitudinal movement in the tunnel without being blocked by blasting debris, and can perform repeated dust removal on different sections of the tunnel.

[0012] Conventional monitoring methods mostly measure dust concentration at a single point, and the measurement results only reflect the dust concentration at the measured point, which has great limitations and fails to consider the dust concentration at the surrounding points, which may cause measurement errors and affect the dust removal effect. This invention can realize multi-point comprehensive dust and harmful gas concentration detection to ensure the air quality of the corresponding tunnel section after dust removal.

[0013] For example, the patent (CN202211454954.0) discloses a comprehensive tunnel dust removal system and construction method, including a water pump, a main water pipeline assembly, and a plurality of branch water pipeline assemblies arranged at intervals along the extension direction of the main water pipeline assembly, any branch water pipeline assembly is connected to the main water pipeline assembly, and the water pump is connected to the main water pipeline assembly; the branch water pipeline assembly is provided with a plurality of water spray assemblies at intervals along its extension direction, and the water spray assemblies are connected to the branch water pipeline assembly; and also includes a time relay, which is electrically connected to the water pump. In addition, the present invention also proposes a construction method, including the above-mentioned comprehensive tunnel dust removal system. According to the present invention, it can be installed on the inner wall of the tunnel to remove dust by spraying water. It has a simple structure and does not affect the passage of vehicles or construction personnel inside the tunnel. Moreover, it can continuously remove dust from multiple places in the tunnel, and the dust removal effect is good.

[0014] However, the spray of the invention can only remove dust from a fixed section, and cannot guarantee the dust concentration of the tunnel section outside the spray section; it is inconvenient to install and disassemble and cannot be reused, and it is difficult to promote the installation of additional systems while tunneling; it uses ordinary water mist, which cannot remove tiny dust particles and harmful gases, and cannot protect workers from the effects of pneumoconiosis; there is no multi-point composite intelligent monitoring system, and it is impossible to provide real-time feedback on the dust concentration in the tunnel;

[0015] For example, the patent (CN202310687579.2) discloses a mobile foam dust removal device for hanging rails and a method for rapid dust removal of drilling and blasting smoke, including: a wall-mounted guide rail, a monorail crane, a foam generation system and a control system module; wherein the wall-mounted guide rail serves as a walking channel for the monorail crane, and the monorail crane serves as a carrying platform for the foam generation system; the monorail crane is provided with a travel motor for driving its own walking; the foam generation system includes a foam generation nozzle, and the foam generation system sprays the foam system into the tunnel through the foam generation nozzle; the control system module is used for wireless remote control of the monorail crane to move forward or backward, and can start or shut down the foam generation system. The present invention adopts a wall-mounted monorail crane, which can be unaffected by the obstruction of blasting slag, and can penetrate into the interior of the tunnel as soon as possible after the tunnel is blasted, and realize all-round dust reduction treatment of the blasting smoke; the wireless control design is adopted to provide reliable protection for personnel safety.

[0016] However, the invention occupies too much space in the tunnel; it uses ordinary water mist, which cannot remove tiny dust particles and harmful gases, and cannot protect workers from the effects of pneumoconiosis; it does not have a multi-point composite intelligent monitoring system, and cannot provide real-time feedback on whether the dust and harmful gas concentrations in the tunnel meet the standards; it only has a crane on one side, and does not consider the width of the tunnel, so it cannot guarantee the dust removal efficiency on the tunnel surface on the opposite side of the crane; the spray fails to completely cover the tunnel cross section, and there are blind spots for dust removal;

[0017] For example, the patent (CN202120609147.6) discloses a water curtain type tunnel dust removal and lining maintenance device, including an upper spray bracket and a lower support frame. The spray bracket is an arch structure formed by sequentially splicing a symmetrically arranged rotating arm, a first section arm and a second section arm. The outer walls of the rotating arm, the first section arm and the second section arm are provided with maintenance nozzles, and the front and rear side walls are provided with dust removal nozzles. The rotating arm, the first section arm and the second section arm are provided with air nozzles matching their shapes. The cavity is connected with the maintenance nozzle and the dust removal nozzle; the support frame is installed on the base, and the control box and the water tank are also installed on the base. The water tank is connected with the cavity inside the rotating big arm, the first section of the small arm and the second section of the small arm through a water pipeline. A power mechanism and an adjusting leg are installed under the base. The adjusting leg is located at the front end of the power mechanism and a universal wheel is arranged at the end thereof. The device is supported by the universal wheel to move longitudinally within the range of the second lining. The power mechanism cooperates with the toothed track fixed on the arch frame to realize the longitudinal movement of the device within the range of the primary lining.

[0018] However, the water storage tank of the invention is not equipped with stirring blades, so the active agent cannot be stirred evenly; microbubble solution is not used as the water source, so small-particle dust and harmful gases cannot be removed, and the air humidity in the tunnel cannot be maintained for a long time; a multi-point composite intelligent monitoring system is not set up, and real-time feedback cannot be given on whether the dust concentration in the tunnel meets the standard; when encountering the second lining of the tunnel, manual repeated arrangement and installation are required, and the construction steps are cumbersome; before the dust removal work begins, tracks need to be laid in the tunnel wall, and as the excavation surface grows, new tracks need to be added continuously, and the installation process is cumbersome, the material consumption is large, and the cost is too high; there is a cavity for water delivery in the forearm of the invention, which cannot take into account both the water delivery volume and the stable structural function, and the length of the forearm cannot be flexibly adjusted during construction;

[0019] For example, the patent (CN202410140829.5) discloses a dust suppression vehicle for mine blasting and a dust suppression method thereof. Through the intelligent control system that can monitor the abnormality of the dust suppression vehicle and the setting of a dual nozzle group of matching dual nozzles, when spraying water or water mist during blasting, the water mist situation can be monitored, and the abnormality of the nozzle can be detected in time. At the same time, the spare nozzle can be controlled to replace the abnormal nozzle. The abnormality can be corrected in time without stopping the dust reduction spray to ensure stable and efficient dust reduction after blasting; in addition, the above-mentioned intelligent control system and the setting of matching spare nozzles can directly control the spare nozzles to spray water synchronously with the original nozzles when the dust amount after blasting exceeds expectations, thereby increasing the water spraying amount, accelerating dust reduction, and achieving the effect of adjusting the spraying amount according to the amount of dust, thereby realizing the intelligent use of the dust suppression vehicle.

[0020] However, the invention does not have a stirring fan in the water tank, so the active agent cannot be stirred evenly; it does not use a microbubble solution as a water source, so it cannot remove small-size dust and harmful gases, and it cannot maintain the air humidity in the tunnel for a long time; it does not have a multi-point composite intelligent monitoring system, so it cannot provide real-time feedback on whether the dust concentration in the tunnel meets the standard; the spray coverage area is small, there are dust removal dead corners, and the dust removal efficiency is insufficient; it fails to take into account the blasting debris on the tunnel ground, which may affect vehicle driving due to dust accumulation on the road surface;

[0021] To this end, a tunnel dust removal device and method based on nano bubble liquid mist and multi-point monitoring are designed to provide another technical solution to the above technical problems. Summary of the invention

[0022] Based on this, it is necessary to provide a tunnel dust removal device and method based on nano bubble liquid mist and multi-point monitoring to solve the technical problems raised by the above background technology.

[0023] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0024] A tunnel dust removal device based on nano bubble liquid mist and multi-point monitoring comprises two water tanks, angle adjustment components are evenly arranged between the tops of the two water tanks, spray components are arranged on both sides of the angle adjustment components, the angle adjustment components comprise a first adjustment plate and a second adjustment plate, one end of the first adjustment plate is rotatably connected to the second adjustment plate, a telescopic rod is fixed to the other end of the first adjustment plate, the spray assembly comprises a support frame, a support tube, a nozzle and a first detector, a support frame is fixed inside the second adjustment plate near one end of the first adjustment plate, support tubes are fixed to the bottoms of both sides of the support frame, a plurality of support tubes are connected by water hoses, a first detector is fixed to the center of the bottom of the support tube, and nozzles are evenly fixed to the bottom of the support tube and located on the outside of the first detector.

[0025] As a preferred embodiment of the tunnel dust removal device based on nano bubble liquid mist and multi-point monitoring provided by the present invention, a reserved water pipe, a water pump, a stirring fan blade and a nano bubble generator are fixed inside the water tank, a reserved water pipe is wrapped around one end of the water tank, the top of the reserved water pipe is connected to a water delivery hose, a water pump is fixed at the bottom of one end of the water tank, the output end of the water pump is connected to the reserved water pipe, a stirring drive motor is fixed at the bottom of the water tank and at one end of the water pump, the output end of the stirring drive motor is connected to the stirring fan blade, and a nano bubble generator is fixed at the other end of the water tank.

[0026] As a preferred embodiment of the tunnel dust removal device based on nano bubble liquid mist and multi-point monitoring provided by the present invention, a feeding port is opened at one end of the top of the water storage tank.

[0027] As a preferred embodiment of the tunnel dust removal device based on nano bubble liquid mist and multi-point monitoring provided by the present invention, a second detector is fixed to one end of the water storage tank.

[0028] As a preferred embodiment of the tunnel dust removal device based on nano bubble liquid mist and multi-point monitoring provided by the present invention, a control panel is fixed to the top of the other end of the water tank.

[0029] As a preferred embodiment of the tunnel dust removal device based on nano bubble liquid mist and multi-point monitoring provided by the present invention, a wired laser sensor is fixed to the bottom of one side of the water tank.

[0030] As a preferred embodiment of the tunnel dust removal device based on nano bubble liquid mist and multi-point monitoring provided by the present invention, tracks are provided at both ends of the bottom of the water tank.

[0031] As a preferred embodiment of the tunnel dust removal device based on nano bubble liquid mist and multi-point monitoring provided by the present invention, dust shields are fixed at both ends of the bottom of the water tank and on the top of the crawler track.

[0032] The method for using the tunnel dust removal device based on nano bubble liquid mist and multi-point monitoring is used for any of the above items, and the steps are as follows:

[0033] S: After the face blasting, add fuel to the dust removal device, and add tap water and surfactant inside the water tank through the water hose;

[0034] S: Place the dust removal device at the arch foot on one side of the tunnel, and adjust the telescopic rod through the control panel to allow the device to unfold along the tunnel excavation contour;

[0035] S: Start the first detector and the second detector to detect the dust and harmful gas concentration in the tunnel section, and determine whether dust removal is needed based on the detection results;

[0036] S: When the device moves to the secondary lining or a man-made turning barrier, the line laser sensor sends a U-turn signal to the crawler to achieve a U-turn, and the corresponding tunnel section is repeatedly dusted.

[0037] As a preferred embodiment of the tunnel dust removal method based on nano bubble liquid mist and multi-point monitoring provided by the present invention, in the step S, if the first detector and the second detector detect that the dust and harmful gas concentrations in the internal section of the tunnel are not up to standard, the braking device is turned off to detect the first detector and the second detector;

[0038] Start the stirring blades and the nano bubble generator, then start the water pump, transport the nano bubble liquid into the interior of the support tube through the reserved water pipe and the water hose, spray it through the nozzle, and stop spraying after 3 minutes;

[0039] Turn on the detection system again, and repeat the above steps if the test results do not meet the standards;

[0040] If the test results meet the standards, the brakes are released and the crawler propulsion device is started to move longitudinally along the tunnel.

[0041] It can be seen without a doubt that the above-mentioned technical solution of the present application can definitely solve the technical problem to be solved by the present application.

[0042] At the same time, through the above technical solutions, the present invention has at least the following beneficial effects:

[0043] The tunnel dust removal device and method based on nano bubble liquid mist and multi-point monitoring provided by the present invention can move the device through the operation of the crawler when in use through the cooperation of the angle adjustment component, the spray component, the water storage tank and the crawler, and can also drive the device to be opened or folded as a whole through the operation of the telescopic rod. At the same time, the nozzle can spray nano bubble mist liquid for dust removal through the detection of the first detector and the second detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0045] Figure 1 It is a schematic diagram of the prior art;

[0046] Figure 2 It is a front view of the present invention;

[0047] Figure 3 It is a schematic diagram of the device of the present invention being collapsed;

[0048] Figure 4 is a side view of the present invention;

[0049] Figure 5is a schematic diagram of a spray assembly of the present invention;

[0050] Figure 6 It is a schematic diagram of the internal structure of the water storage tank of the present invention;

[0051] Figure 7 It is a schematic diagram of the structure of the dust shield of the present invention;

[0052] Figure 8 It is a schematic diagram of the working of the device of the present invention;

[0053] Fig. 9 It is a schematic diagram of the dust removal working process of the present invention.

[0054] In the figure: 1. Angle adjustment component; 2. Spray component; 3. Water delivery hose; 4. Water storage tank; 5. Track; 6. Telescopic rod; 7. First adjustment plate; 8. Second adjustment plate; 9. Support frame; 10. Support cylinder; 11. Spray head; 12. First detector; 13. Feeding port; 14. Reserved water pipe; 15. Second detector; 16. Water pump; 17. Stirring fan blade; 18. Nano bubble generator; 19. Control panel; 20. Line laser sensor; 21. Dust shield. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0056] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0057] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0058] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0059] Reference Figure 2-Figure 8 The tunnel dust removal device based on nano bubble liquid mist and multi-point monitoring includes two water tanks 4, and angle adjustment components 1 are evenly arranged between the tops of the two water tanks 4, so that the two water tanks 4 can be folded close to each other or unfolded away from each other by adjusting the angle adjustment components 1 to move closer to each other or away from each other, so as to facilitate the opening of the device when in use or the storage when not in use. Spray components 2 are arranged on both sides of the angle adjustment component 1, so that the nano bubbles sprayed by the spray component 2 can be used for dust removal;

[0060] The angle adjustment assembly 1 includes a first adjustment plate 7 and a second adjustment plate 8, one end of the first adjustment plate 7 is rotatably connected to the second adjustment plate 8, and the other end of the first adjustment plate 7 is fixed with a telescopic rod 6, so that multiple angle adjustment assemblies 1 can be connected through the telescopic rod 6 located on one end of the angle adjustment assembly 1 and the second adjustment plate 8 located on the other end of the angle adjustment assembly 1, and the operation of the telescopic rod 6 drives two adjacent angle adjustment assemblies 1 to move closer or farther away;

[0061] In this embodiment, the telescopic rod 6 may be an electric push rod. In other embodiments, the telescopic rod 6 may be a telescopic device such as a cylinder or a hydraulic rod.

[0062] The spray assembly 2 includes a support frame 9, a support cylinder 10, a nozzle 11 and a first detector 12. The support frame 9 is fixed inside the second adjustment plate 8 near one end of the first adjustment plate 7. The support cylinders 10 are fixed to the bottom of both sides of the support frame 9. The multiple support cylinders 10 are connected by a water hose 3, so that the liquid inside the water hose 3 can enter the interior of the multiple support cylinders 10. The first detector 12 is fixed at the center of the bottom of the support cylinder 10. The nozzles 11 are evenly fixed at the bottom of the support cylinder 10 and located on the outside of the first detector 12, so that the liquid inside the support cylinder 10 can be sprayed through the nozzles 11;

[0063] In this embodiment, the spray assembly 2 is arranged on both sides of the angle adjustment assembly 1, so that the spray area can be further increased without affecting the operation and folding and recycling of the device, and the multiple support cylinders 10 can be connected through the water hose 3, so that each first detector 12 composed of multiple nozzles 11 can be arranged on the vertical nozzle surface and the side, which has the effect of increasing the spray coverage area. At the same time, since the spray assembly 2 is only arranged on the angle adjustment assembly 1, it saves materials, saves costs and facilitates folding and recycling.

[0064] A reserved water pipe 14, a water pump 16, a stirring blade 17 and a nano bubble generator 18 are fixed inside the water tank 4. A charging port 13 is provided at one end of the top of the water tank 4, so that liquid can be added to the inside of the water tank 4 through the charging port 13. A second detector 15 is fixed at one end of the water tank 4. A reserved water pipe 14 is wound around one end of the inside of the water tank 4. The top of the reserved water pipe 14 is connected to the water hose 3, so that the liquid inside the reserved water pipe 14 can enter the inside of the water hose 3, and the reserved water pipe 14 can be pulled at the top of the water tank 4 to drive the reserved water pipe 14 to extend when needed;

[0065] In this embodiment, the water delivery hose 3 and the reserved water pipe 14 are both made of PB plastic pipes, which can be connected by hot melt, with less potential leakage. The material is healthy, safe and reliable, has strong corrosion resistance, and has a long service life. It can also prevent secondary pollution of water during the transmission process. The length of the reserved water pipe 14 for the PB pipe is reserved in the water storage tank to facilitate the adjustment of the device span during construction;

[0066] A water pump 16 is fixed at the bottom of one end of the water tank 4, and the output end of the water pump 16 is connected to the reserved water pipe 14, so that the water pump 16 extracts the water in the water tank 4 and transports it into the reserved water pipe 14. A stirring drive motor is fixed at the bottom of the water tank 4 and at one end of the water pump 16. The output end of the stirring drive motor is connected to a stirring blade 17, so that the liquid in the water tank 4 and the additive can be mixed evenly through the operation of the stirring blade 17 to enhance the dust removal efficiency of the aqueous solution. A nano bubble generator 18 is fixed at the other end of the water tank 4, so that the liquid in the water tank 4 can be processed by the nano bubble generator 18;

[0067] In this embodiment, the model of the nano bubble generator 18 is RJN-MN-300. The nano bubble generator 18 specifically utilizes the interaction between high-pressure gas and liquid to convert gas molecules into tiny bubbles through a specific device. Nano bubbles refer to bubbles with a diameter of 1nm to 1μm. Bubbles of this size have a small volume, which greatly increases the number of bubbles per unit volume and greatly improves the collision rate between bubbles and dust particles. After the bubbles and dust particles collide, the dust particles are wetted and then settled. In addition, the nano bubble liquid mist can also wet and settle the micro-level dust particles that cannot be eliminated by traditional spray dust removal, thereby greatly protecting the health of construction workers. It is reported that the main cause of workers' pneumoconiosis is micro-level floating particles, which cannot be eliminated by traditional methods;

[0068] Compared with ordinary bubbles, nanobubbles help to increase gas mass transfer rate and gas holding rate, and can provide oxygen to the tunnel environment;

[0069] Since nanobubbles have a higher potential, they can electrostatically bond with dust particles, further improving the ability to capture dust particles;

[0070] Since the diameter of nanobubbles is small, this characteristic enables the nanobubbles to remain suspended in water and air for a longer period of time, which can not only maintain the air humidity in the tunnel for a long time, but also be stored in the water storage tank 4 for a long time;

[0071] Nanobubbles are rich in hydroxyl free radicals and have strong oxidizing ability, which can kill bacteria in the air and remove harmful gases such as CO2, NO2, SO2, NH3, etc., thus greatly improving the air quality in the tunnel;

[0072] This dust removal solution is pollution-free and, compared with traditional water mist dust removal, requires less water and time to achieve better dust removal results.

[0073] In this embodiment, a control panel 19 is fixed to the top of the other end of the water tank 4, so that the operation of the water pump 16, the nano bubble generator 18 and the stirring drive motor can be controlled by remote control of the control panel 19, or can also be controlled directly through the control panel 19.

[0074] In this embodiment, the first detector 12 and the second detector 15 are specifically dust concentration and harmful gas detectors, and the models of the first detector 12 and the second detector 15 are HR-BDM and YF-9000 respectively.

[0075] In other embodiments, multiple first detectors 12 or second detectors 15 can be set at different positions on the device as needed, so that the concentration at different heights can be detected by the multiple first detectors 12 and second detectors 15, so that the comprehensive concentration monitoring results at different levels are uploaded to the processor, which will determine whether to perform dust removal. Only by ensuring that the dust concentration at different positions is qualified can the air quality in the tunnel be guaranteed to meet the standards. Dust removal automation is realized to reduce the workload of construction personnel. It can solve the problems of cumbersome operation of traditional dust removal solutions, substandard dust removal work quality and poor power performance.

[0076] A wire laser sensor 20 is fixed to the bottom of one side of the water tank 4, so that the wire laser sensor 20 can emit infrared rays and analyze the results to perform instructions such as turning and avoiding obstacles or turning around in the tunnel. Tracks 5 are provided at both ends of the bottom of the water tank 4, so that the water tank 4 is driven to move the device through the operation of the track 5. Dust guards 21 are fixed at both ends of the bottom of the water tank 4 and on the top of the track 5, so that the dust guards 21 can be used to prevent mud from splashing when the track 5 moves.

[0077] In this embodiment, the model of the line laser sensor 20 is TFmin iS.

[0078] In this embodiment, the crawler 5 is an existing mature technology and can adapt to relatively rugged terrain. On the one hand, during construction, there is no need to add slide rails to the device as the excavation surface deepens, which can greatly reduce construction materials, further reduce complex construction procedures, and more smoothly carry out tunnel dust removal work; second, a line laser sensor 20 is added to transmit infrared rays and analyze the results to perform instructions such as turning and avoiding obstacles or turning around in the tunnel, reducing manual operations and further saving manpower and time; third, the crawler 5 is used for movement, which can adapt to various complex tunnel road environments.

[0079] In this embodiment, the angle adjustment component 1, the spray component 2, the track 5, the water pump 16, the nano bubble generator 18, and the stirring drive motor can all be controlled to start and stop by the control panel 19, which greatly reduces the complexity of the construction, saves materials and speeds up the construction period. At the same time, it can also be controlled by remote control of the external control device and the control panel 19.

[0080] Embodiment 2

[0081] Based on the above embodiment 1, an alternative solution is provided, which is as follows:

[0082] 1. In addition to using nano bubble water mist for dust removal, larger bubbles can also be used for dust removal.

[0083] 2. In addition to the above-mentioned hydraulic method, the device can also be extended by springs, gears, threads and other telescopic methods.

[0084] 3. In addition to infrared laser sensing + crawler tracks, other moving methods can also be used, such as slide rails and dust removal vehicles.

[0085] 4. In addition to the multi-point composite intelligent monitoring system, detection can also be carried out through scattering method, weighing method and optical counting method.

[0086] 5. There are many kinds of solution stirring blades, which can be spiral ribbon type, anchor type and other blade forms.

[0087] 6. In addition to fixed nozzles 11, the water delivery and spraying system can also use fog cannons and high-pressure water guns.

[0088] 7. In addition to the above-mentioned hydraulic rods, the supporting frame structure can also be made of U-shaped welded steel pipes.

[0089] Embodiment 3

[0090] Based on the above embodiment 1, a dust removal method is disclosed, and the steps are as follows:

[0091] After the face is blasted, fuel is added to the dust removal device, and tap water and surfactant are added to the inside of the water tank 4 through the water hose 3 to provide power, raw materials and gain for the dust removal device respectively, and roadblocks are arranged in advance for the device to turn around;

[0092] The dust removal device is placed at the arch foot on one side of the tunnel, and the operation of the telescopic rod 6 is adjusted through the control panel 19 to allow the device to be deployed along the tunnel excavation contour line; at this time, the operation of the telescopic rod 6 drives the first adjustment plate 7 and the second adjustment plate 8 in the corresponding angle adjustment assembly 1 to adjust the angle by rotating;

[0093] The device is started to detect the dust and harmful gas concentrations in the cross section of the tunnel through the first detector 12 and the second detector 15. If the detection result does not meet the standard, the braking device is used to turn off the detection of the first detector 12 and the second detector 15, start the stirring blade 17 and the nano bubble generator 18, and then start the water pump 16, so that the water pump 16 can transport the nano bubble liquid into the water hose 3 through the reserved water pipe 14, and then enter the inside of the support tube 10, spray it through the nozzle 11, and stop spraying after 3 minutes, and start the detection system again. If the detection result does not meet the standard, repeat the above steps; if the detection result meets the standard, release the brake and start the crawler 5 to push the device to move longitudinally along the tunnel;

[0094] When the device moves to the secondary lining or a man-made roadblock for turning, the line laser sensor 20 can be used to send a U-turn signal to the crawler 5 to achieve a U-turn, and the corresponding tunnel section can be repeatedly dusted; when fuel and water are insufficient, an alarm is issued on the control panel 19, and raw materials can be added to the device at this time.

[0095] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A tunnel dust removal device based on nano bubble liquid mist and multi-point monitoring, characterized in that: The invention comprises two water storage tanks (4), wherein an angle adjustment assembly (1) is evenly arranged between the tops of the two water storage tanks (4), and spray assemblies (2) are arranged on both sides of the angle adjustment assembly (1). The angle adjustment assembly (1) comprises a first adjustment plate (7) and a second adjustment plate (8), wherein one end of the first adjustment plate (7) is rotatably connected to the second adjustment plate (8), and the other end of the first adjustment plate (7) is fixed with a telescopic rod (6), and the spray assembly (2) comprises a support frame (9), a support tube (10), a spray head (11) and a first detector (12), wherein the support frame (9) is fixed inside the second adjustment plate (8) near one end of the first adjustment plate (7), and support tubes (10) are fixed at the bottoms of both sides of the support frame (9), and a plurality of support tubes (10) are connected by water delivery hoses (3), and a first detector (12) is fixed at the center of the bottom of the support tube (10), and spray heads (11) are evenly fixed at the bottom of the support tube (10) and outside the first detector (12).

2. The tunnel dust removal device based on nano bubble liquid mist and multi-point monitoring according to claim 1 is characterized in that: A reserved water pipe (14), a water pump (16), a stirring fan blade (17) and a nano bubble generator (18) are fixed inside the water storage tank (4); the reserved water pipe (14) is wound around one end of the water storage tank (4); the top of the reserved water pipe (14) is connected to a water delivery hose (3); a water pump (16) is fixed at the bottom of one end of the water storage tank (4); the output end of the water pump (16) is connected to the reserved water pipe (14); a stirring drive motor is fixed at the bottom of the water storage tank (4) and located at one end of the water pump (16); the output end of the stirring drive motor is connected to the stirring fan blade (17); and the nano bubble generator (18) is fixed at the other end of the water storage tank (4).

3. The tunnel dust removal device based on nano bubble liquid mist and multi-point monitoring according to claim 2 is characterized in that: A feeding port (13) is provided at one end of the top of the water storage tank (4).

4. The tunnel dust removal device based on nano bubble liquid mist and multi-point monitoring according to claim 2 is characterized in that: A second detector (15) is fixed to one end of the water storage tank (4).

5. The tunnel dust removal device based on nano bubble liquid mist and multi-point monitoring according to claim 1 is characterized in that: A control panel (19) is fixed to the top of the other end of the water storage tank (4).

6. The tunnel dust removal device based on nano bubble liquid mist and multi-point monitoring according to claim 1 is characterized in that: A wired laser sensor (20) is fixed to the bottom of one side of the water storage tank (4).

7. The tunnel dust removal device based on nano bubble liquid mist and multi-point monitoring according to claim 1 is characterized in that: Tracks (5) are provided at both ends of the bottom of the water storage tank (4).

8. The tunnel dust removal device based on nano bubble liquid mist and multi-point monitoring according to claim 7 is characterized in that: Dust shields (21) are fixed at both ends of the bottom of the water storage tank (4) and located on the top of the crawler track (5).

9. A tunnel dust removal method based on nano bubble liquid mist and multi-point monitoring, used in the tunnel dust removal device based on nano bubble liquid mist and multi-point monitoring according to any one of claims 1 to 8, characterized in that: Here are the steps: S1: After the face is blasted, fuel is added to the dust removal device, and tap water and a surfactant are added to the inside of the water storage tank (4) through a water hose (3); S2: placing the dust removal device at the arch foot on one side of the tunnel, and adjusting the telescopic rod (6) through the control panel (19) to allow the device to be deployed along the tunnel excavation contour line; S3: starting the first detector (12) and the second detector (15) to detect the concentration of dust and harmful gases in the cross section inside the tunnel, and judging whether dust removal is required based on the detection results; S4: When the device moves to the secondary lining or a roadblock set up by humans for turning, a U-turn signal is sent to the crawler (5) through the induction of the line laser sensor (20) to realize the U-turn, and the corresponding tunnel section is repeatedly dusted.

10. The tunnel dust removal method based on nano bubble liquid mist and multi-point monitoring according to claim 9, characterized in that: In the step S2, if the first detector (12) and the second detector (15) detect that the dust and harmful gas concentrations in the internal section of the tunnel do not meet the standards, the braking device is used to turn off the detection of the first detector (12) and the second detector (15); Start the stirring blade (17) and the nano bubble generator (18), then start the water pump (16), transport the nano bubble liquid into the interior of the support tube (10) through the reserved water pipe (14) and the water hose (3), spray it through the nozzle (11), and stop spraying after 3 minutes; Turn on the detection system again, and repeat the above steps if the test results do not meet the standards; If the test result meets the standard, the brake is released and the crawler (5) is started to push the device to move longitudinally along the tunnel.

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