An underground engineering spraying device

Abstract

This invention belongs to the technical field of dust suppression equipment for underground engineering, and specifically relates to an underground engineering spraying device, including a water tank. Rollers are fixedly connected to the four corners of the lower surface of the water tank, and an arc-shaped hollow plate that matches the arc-shaped inner wall of the tunnel is fixedly connected to the upper surface of the water tank. This invention enables the underground engineering spraying device to be easily installed and allows for the recycling of spray water, effectively improving the ease of use and environmental friendliness of the device. Simultaneously, the underground engineering spraying device also has functions such as air dehumidification after dust suppression, adjustment of spray dust suppression intensity, and prevention of water mist dispersion. This not only effectively improves the visibility of workers but also avoids damp tunnel construction environments and water damage to construction equipment, further improving the reliability of tunnel construction. Furthermore, the device can adapt to spray dust suppression work with different levels of dust pollution and effectively improve the dust suppression effect of the underground engineering spraying device.

Description

Technical Field

[0001] This invention belongs to the technical field of dust removal equipment for underground engineering, and in particular relates to a spraying device for underground engineering. Background Technology

[0002] In underground engineering, tunnel construction is an important part. During tunnel construction, a large amount of dust is generated. This dust not only affects the construction environment but also threatens the health of construction workers. Therefore, in order to improve the construction environment, protect the health of construction workers, improve construction quality, and meet environmental protection requirements, it is necessary to install a spray system for dust suppression. The spray system can effectively absorb and settle dust in the air, thereby reducing the dust concentration and making the construction environment cleaner and safer. For example, the patent for an underground engineering spray system is disclosed in the authorization announcement number CN219654731U.

[0003] Existing underground engineering sprinkler systems need to be installed on top of tunnel support equipment and reduce dust by directly spraying water. However, the installation of the sprinkler system is cumbersome and inconvenient. In addition, the water mist sprayed directly will dampen the tunnel construction environment and affect the visibility of workers. At the same time, the water mist can easily cause water damage to construction equipment, thus affecting the reliability of tunnel construction.

[0004] In addition, when the dust concentration is high, the interaction force between dust particles is strong. During the dust suppression process, the combination of water and dust will be more difficult, making it difficult to effectively agglomerate and settle dust, thus affecting the dust suppression effect and adversely affecting the dust suppression effect of underground engineering spray devices.

[0005] Therefore, we propose an underground engineering sprinkler system to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to address the above-mentioned problems by providing an underground engineering sprinkler device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an underground engineering sprinkler device, comprising a water tank, rollers fixedly connected to the four corners of the lower surface of the water tank, an arc-shaped hollow plate fixedly connected to the upper surface of the water tank to cooperate with the arc-shaped inner wall of the tunnel, a conduit and a normally open solenoid valve fixedly connected to the upper surface of the water tank, a liquid level switch for controlling the normally open solenoid valve fixedly connected to the inner wall of the bottom end of the arc-shaped hollow plate, the top ends of the conduit and the normally open solenoid valve located inside the arc-shaped hollow plate, a U-shaped hollow cover fixedly connected to the top end of the conduit, the top end and side walls of the U-shaped hollow cover being fixedly connected to the inner wall of the arc-shaped hollow plate, a first partition fixedly connected to the inner wall of the U-shaped hollow cover, the lower surface of the first partition and the bottom of the U-shaped hollow cover together forming In the water-filling area, the U-shaped hollow cover is fixedly connected to multiple impact-type atomizing nozzles on its outer wall. The upper surface of the first partition and the top of the U-shaped hollow cover together form a cooling area. The outer wall of the U-shaped hollow cover in the cooling area and the inner wall of the top of the arc-shaped hollow plate are fixedly connected to a second partition. The upper surface of the second partition is fixedly connected to multiple one-way exhaust valves. The upper surface of the arc-shaped hollow plate is fixedly connected to a dust suppression mechanism. The upper surface of the water tank located inside the arc-shaped hollow plate is fixedly connected to a water circulation mechanism. Two through holes are opened at the bottom side wall edge of the arc-shaped hollow plate, and the walls of the two through holes are fixedly connected to a U-shaped magnetic plate. The outer wall of the arc-shaped hollow plate is fixedly connected to a connecting frame, and the inner wall of the connecting frame is fixedly connected to a PLC controller.

[0008] In the aforementioned underground engineering sprinkler system, the dust suppression mechanism includes a hollow block fixedly connected to the upper surface of an arc-shaped hollow plate. A vertical plate is fixedly connected to the upper surface of the hollow block. An axial flow fan and a vortex tube are respectively provided on both sides of the vertical plate. The air inlet of the axial flow fan passes through the inner wall of the arc-shaped hollow plate. The cold end of the vortex tube passes through the inner wall of the arc-shaped hollow plate and is located inside the top of a U-shaped hollow cover. The hot end of the vortex tube passes through the upper surface of the hollow block. A connecting cover is provided outside the hot end of the vortex tube. The bottom end of the connecting cover is fixedly connected to the upper surface of the hollow block. A pipe joint is fixedly connected to the outer surface of the connecting cover. The output end of the axial flow fan is fixedly connected to a bend pipe. The output end of the bend pipe passes through the upper surface of the hollow block and extends downward. The output end of the bend pipe is fixedly connected to a gas distribution hood. The side wall of the gas distribution hood is fixedly connected to the outer wall of the water tank. Multiple air outlet pipes are fixedly connected to the bottom outer wall of the gas distribution hood. A small piston air pump is fixedly connected to the outer wall of the hollow block. The output end of the small piston air pump passes through the inner wall of the hollow block. A dust suppression feedback mechanism is connected to the inner wall of the gas distribution hood. A rectangular through hole is opened on the outer wall of the U-shaped hollow hood in the cooling zone. A heat-conducting plate is fixedly connected to the wall of the rectangular through hole. Multiple metal rods are fixedly embedded on the outer wall of the heat-conducting plate. An exhaust one-way valve and a drain pipe are fixedly connected to the outer wall of the U-shaped hollow hood in the low-temperature cooling zone. The output end of the exhaust one-way valve is located below the second partition. The bottom end of the drain pipe passes through the outer wall of the U-shaped hollow hood and is fixedly connected to the drain one-way valve. An activated carbon filter canister is connected to the suction end of the small piston air pump.

[0009] In the aforementioned underground engineering sprinkler device, the dust suppression feedback mechanism includes a light intensity sensing component and a motor fixedly embedded in the outer wall of the gas distribution hood. A laser source cooperating with the light intensity sensing component is fixedly connected to the outer wall of the water tank. Glass covers are provided on the outer sides of both the light intensity sensing component and the laser source. The outer walls of the two glass covers are respectively connected to the inner wall of the gas distribution hood and the outer wall of the water tank through sealed bearings. A connecting rod is fixedly connected to the outer walls of the two glass covers. The output end of the motor is fixedly connected to the inner wall of one of the glass covers. A support rod is fixedly connected to the inner wall of the gas distribution hood. A rubber block is fixedly connected to the wall of the support rod. A cotton cloth cover for cleaning the surface of the glass cover is sleeved on the outer wall of the rubber block. An installation cover is fixedly connected to the outer wall of the U-shaped magnetic plate. An electromagnet is fixedly connected to the inner wall of the installation cover and the outer wall of the U-shaped magnetic plate.

[0010] In the above-mentioned underground engineering sprinkler device, the water circulation mechanism includes a fixed plate fixedly connected to the upper surface of the water tank, a water pump fixedly connected to the outer wall of the fixed plate, a water guide pipe fixedly connected to the outlet end of the water pump, a side end of the water guide pipe passing through the outer wall of the arc-shaped hollow plate and fixedly connected to a filter assembly, a return pipe fixedly connected to the outer wall of the filter assembly, the bottom end of the return pipe passing through the inner wall of the water tank, and a water injection valve fixedly connected to the outer wall of the water tank.

[0011] In the aforementioned underground engineering sprinkler device, the filtration assembly includes a filter box fixedly connected to the upper surface of a water tank. The two sides of the filter box are fixedly connected to the side ends of a water guide pipe and a return pipe, respectively. A support mesh plate is connected to the inner wall of the filter box. A box cover is bolted to the top of the filter box. Multiple limiting strips are fixedly connected to the lower surface of the box cover and the inner wall of the filter box. A filter cartridge is connected to the outer wall of the support mesh plate and the multiple limiting strips. A filter cloth sleeve is fixedly connected to the inner wall of the filter cartridge. A filter sponge cylinder is connected to the inner wall of the filter cloth sleeve.

[0012] In the above-mentioned underground engineering sprinkler device, a viewing tube is fixedly embedded on the upper surface of the filter box located at the inlet of the return pipe.

[0013] In the above-mentioned underground engineering sprinkler device, the inner wall of the arc-shaped hollow plate and the outer wall of the U-shaped hollow cover are fixedly connected with a metal mesh plate, which is located above the exhaust one-way valve.

[0014] In the aforementioned underground engineering sprinkler device, the light intensity sensing component and the center of the laser source are on the same horizontal line, and the horizontal line is located directly below the output end of the curved pipe.

[0015] In the above-mentioned underground engineering sprinkler device, the inner wall of the arc-shaped hollow plate and the outer wall of the U-shaped hollow cover are fixedly connected to a third partition. Multiple conical air inlets are fixedly embedded at the top of the third partition, and a foreign object prevention mesh is fixedly connected to the inner wall of the air inlet at the top of the arc-shaped hollow plate.

[0016] Compared with existing technologies, the advantages of an underground engineering sprinkler system are:

[0017] 1. The system utilizes a water circulation mechanism, water tank, U-shaped magnetic plate, and dust suppression mechanism. When dust is generated during tunnel construction and requires dust suppression via a spray system, water is first injected into the bottom of the device through a filling valve. Then, the PLC controller starts the water pump and axial flow fan. The water circulation mechanism filters the water after dust suppression and fills the water tank into the filling area, allowing the impact-type atomizing spray to spray water mist for dust suppression. The axial flow fan draws air from inside the curved hollow plate and delivers it to the bend. To maintain air pressure balance, the curved hollow plate draws in outside air and dust. The dust is treated by the water mist and settles, while simultaneously being dispersed by the U-shaped magnetic plate. The magnetic field of the plate causes efficient dust settling. The purified air is then introduced into the bend through a one-way exhaust valve and an axial flow fan. Finally, the clean air is blown towards the top of the tunnel through the air distribution hood and the exhaust pipe. The device draws in air from the top and blows air from the bottom, and together with the arc-shaped inner wall of the tunnel, it can form a ring-shaped airflow inside the tunnel. The ring-shaped airflow can collect dust into the device for dust suppression more quickly and over a wider area. This mechanism can effectively improve the dust suppression effect of underground engineering spray devices. Moreover, the device also has the functions of convenient installation and spray water recycling, which can effectively improve the convenience and environmental friendliness of the device.

[0018] 2. The underground engineering sprinkler system, equipped with a vortex tube, a small piston air pump, and a metal rod, operates by controlling the small piston air pump during dust suppression. The pump continuously and stably delivers clean compressed air to the hollow block through an activated carbon filter. The compressed air then enters the vortex tube for processing, resulting in partial heating and cooling. The cold end of the vortex tube generates low-temperature air, which cools the heat-conducting plate, metal rod, and metal mesh. As the clean air carrying moisture passes through the low-temperature heat-conducting plate and metal rod, the moisture liquefies into water droplets upon cooling, separating. Finally, the dry, clean air is discharged through a bend in the pipe. This mechanism enables the underground engineering sprinkler system to dehumidify the air after dust suppression and prevent water mist from dispersing. This not only effectively improves the visibility of workers but also prevents damage to construction equipment from a damp tunnel environment, further enhancing the reliability of tunnel construction.

[0019] 3. Through the dust suppression feedback mechanism, when the clean air after dust suppression is discharged through the curved pipe output end, the PLC controller controls the dust suppression feedback mechanism to work. If the cleanliness of the clean air after dust suppression is not up to standard and still contains a large number of dust particles, the dust particles will cause excessive scattering of the laser beam as they pass through the laser source. This will weaken the light intensity of the laser beam illuminating the light intensity sensor. At this time, the light intensity sensor sends a signal to the PLC controller indicating that the air dust suppression effect is not up to standard. The PLC controller then activates the electromagnet. The electromagnet can effectively increase the magnetic field of the U-shaped magnetic plate. The stronger the magnetic field, the faster the dust accumulates, thereby improving the dust suppression effect of the spray. At the same time, the magnetic field strength generated by the electromagnet is inversely proportional to the data detected by the light intensity sensor. This mechanism, through the dust suppression feedback mechanism, enables the underground engineering spray device to have the function of adjusting the spray dust suppression intensity, thereby enabling the device to adapt to different dust pollution levels and effectively improve the dust suppression effect of the underground engineering spray device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an underground engineering sprinkler device provided by the present invention;

[0021] Figure 2 This is a partially enlarged structural schematic diagram of an underground engineering sprinkler device provided by the present invention;

[0022] Figure 3 This is a schematic diagram of the water circulation mechanism in an underground engineering sprinkler system provided by the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of a U-shaped magnetic plate in an underground engineering sprinkler device provided by the present invention;

[0024] Figure 5 This is a schematic diagram of the dust suppression mechanism in an underground engineering spraying device provided by the present invention;

[0025] Figure 6 This is a schematic diagram of the dust suppression feedback mechanism in an underground engineering sprinkler system provided by the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of a filter component in an underground engineering sprinkler system provided by the present invention.

[0027] In the diagram: 1. Water tank; 2. Rollers; 3. Arc-shaped hollow plate; 4. Pipe; 5. Normally open solenoid valve; 6. Filter assembly; 61. Filter box; 62. Support mesh plate; 63. Box cover; 64. Limiting strip; 65. Filter cartridge; 66. Filter cloth sleeve; 67. Filter sponge cartridge; 7. Dust suppression mechanism; 71. Hollow block; 72. Vertical plate; 73. Axial flow fan; 74. Vortex tube; 75. Connecting cover; 76. Pipe joint; 77. Bend; 78. Gas distribution hood; 79. Air outlet pipe; 710. Small piston air pump; 711. Heat conduction plate; 712. Metal rod; 713. Exhaust check valve; 714. Drain pipe; 715. Drain check valve; 716. Activated carbon filter tank; 8. Water circulation mechanism; 81. Fixing plate; 8 2. Water pump, 83. Water guide pipe, 84. Return pipe, 85. Water injection valve, 9. Dust suppression feedback mechanism, 91. Light intensity sensor component, 92. Motor, 93. Laser source, 94. Glass cover, 95. Connecting rod, 96. Support rod, 97. Rubber block, 98. Cotton cloth cover, 99. Mounting cover, 910. Electromagnet, 10. U-shaped hollow cover, 11. First partition, 12. Water filling area, 13. Impact atomizing nozzle, 14. Cooling area, 15. Second partition, 16. One-way exhaust valve, 17. U-shaped magnetic plate, 18. Connecting frame, 19. PLC controller, 20. Liquid level switch, 21. Perspective tube, 22. Metal mesh plate, 23. Third partition, 24. Conical air inlet, 25. Foreign object protection mesh plate. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1-7As shown, an underground engineering sprinkler system includes a water tank 1. Rollers 2 are fixedly connected to the four corners of the lower surface of the water tank 1. An arc-shaped hollow plate 3, which matches the arc-shaped inner wall of a tunnel, is fixedly connected to the upper surface of the water tank 1. A conduit 4 and a normally open solenoid valve 5 are fixedly connected to the upper surface of the water tank 1. A liquid level switch 20 for controlling the normally open solenoid valve 5 is fixedly connected to the inner wall of the bottom end of the arc-shaped hollow plate 3. The top ends of the conduit 4 and the normally open solenoid valve 5 are located inside the arc-shaped hollow plate 3. A U-shaped hollow cover 10 is fixedly connected to the top end of the conduit 4. The top end and side walls of the U-shaped hollow cover 10 are both connected to the arc-shaped hollow plate 3. The inner wall of the U-shaped hollow cover 10 is fixedly connected to a first partition 11. The lower surface of the first partition 11 and the bottom of the U-shaped hollow cover 10 together form a water filling area 12. The outer wall of the U-shaped hollow cover 10 located in the water filling area 12 is fixedly connected to multiple impact atomizing nozzles 13. The upper surface of the first partition 11 and the top of the U-shaped hollow cover 10 together form a cooling area 14. The outer wall of the U-shaped hollow cover 10 located in the cooling area 14 and the inner wall of the top of the arc-shaped hollow plate 3 are fixedly connected to a second partition 15. The upper surface of the second partition 15 is fixedly connected to multiple one-way exhaust valves 16.

[0030] A dust suppression mechanism 7 is fixedly connected to the upper surface of the arc-shaped hollow plate 3. The dust suppression mechanism 7 includes a hollow block 71 fixedly connected to the upper surface of the arc-shaped hollow plate 3. A vertical plate 72 is fixedly connected to the upper surface of the hollow block 71. An axial flow fan 73 and a vortex tube 74 are respectively provided on both sides of the vertical plate 72. The air inlet end of the axial flow fan 73 passes through the inner wall of the arc-shaped hollow plate 3, and the cold end of the vortex tube 74 passes through the inner wall of the arc-shaped hollow plate 3 and is located inside the top of the U-shaped hollow cover 10. The hot end of the vortex tube 74 passes through the upper surface of the hollow block 71. On the surface, a connecting cover 75 is provided on the outer side of the hot end of the vortex tube 74. The bottom end of the connecting cover 75 is fixedly connected to the upper surface of the hollow block 71. A pipe joint 76 is fixedly connected to the outer surface of the connecting cover 75. The output end of the axial flow fan 73 is fixedly connected to a bend 77. The output end of the bend 77 passes through the upper surface of the hollow block 71 and extends downward. The output end of the bend 77 is fixedly connected to a gas distribution hood 78. The side wall of the gas distribution hood 78 is fixedly connected to the outer wall of the water tank 1. Multiple air outlet pipes are fixedly connected to the bottom outer wall of the gas distribution hood 78. 79. A small piston air pump 710 is fixedly connected to the outer wall of the hollow block 71. The output end of the small piston air pump 710 passes through the inner wall of the hollow block 71. A rectangular through hole is opened on the outer wall of the U-shaped hollow cover 10 located in the cooling zone 14, and a heat-conducting plate 711 is fixedly connected to the wall of the rectangular through hole. Multiple metal rods 712 are fixedly embedded on the outer wall of the heat-conducting plate 711. An exhaust one-way valve 713 and a drain pipe 714 are fixedly connected to the outer wall of the U-shaped hollow cover 10 located in the low-temperature cooling zone 14. The exhaust one-way valve 713... The outlet is located below the second partition 15. The bottom end of the drain pipe 714 passes through the outer wall of the U-shaped hollow cover 10 and is fixedly connected to the drain one-way valve 715. The air extraction end of the small piston air pump 710 is connected to the activated carbon filter canister 716. This mechanism enables the underground engineering spray device to have the functions of dehumidifying the air after dust suppression and preventing the spread of water mist. It can not only effectively improve the visibility of the workers, but also avoid the situation of damp tunnel construction environment and water damage to construction equipment, further improving the reliability of tunnel construction.

[0031] The inner wall of the air distribution hood 78 is connected to a dust suppression feedback mechanism 9. The dust suppression feedback mechanism 9 includes a light intensity sensing component 91 and a motor 92 fixedly embedded in the outer wall of the air distribution hood 78. The outer wall of the water tank 1 is fixedly connected to a laser source 93 that cooperates with the light intensity sensing component 91. The center positions of the light intensity sensing component 91 and the laser source 93 are on the same horizontal line, and the horizontal line is located directly below the output end of the bend pipe 77, thereby ensuring that the dust suppression feedback mechanism 9 can accurately detect whether the dust content of the air ejected from the bend pipe 77 is qualified. The outer sides of the light intensity sensing component 91 and the laser source 93 are each provided with a glass cover 94. The outer walls of the two glass covers 94 are connected to the inner wall of the air distribution hood 78 and the outer wall of the water tank 1 respectively through sealed bearings. A connecting rod 95 is fixedly connected to the outer wall of the 4. The output end of the motor 92 is fixedly connected to the inner wall of one of the glass covers 94. A support rod 96 is fixedly connected to the inner wall of the air distribution cover 78. A rubber block 97 is fixedly connected to the rod wall of the support rod 96. A cotton cloth cover 98 for cleaning the surface of the glass cover 94 is sleeved on the outer wall of the rubber block 97. An installation cover 99 is fixedly connected to the outer wall of the U-shaped magnetic plate 17. An electromagnet 910 is fixedly connected to the inner wall of the installation cover 99 and the outer wall of the U-shaped magnetic plate 17. This mechanism enables the underground engineering spraying device to have the function of adjusting the intensity of spraying dust suppression through the dust suppression feedback mechanism 9, thereby enabling the device to adapt to spraying dust suppression work with different dust pollution levels and effectively improve the dust suppression effect of the underground engineering spraying device.

[0032] Two through holes are opened at the bottom sidewall edge of the arc-shaped hollow plate 3, and a U-shaped magnetic plate 17 is fixedly connected to the wall of both through holes. A connecting frame 18 is fixedly connected to the outer wall of the arc-shaped hollow plate 3, and a PLC controller 19 is fixedly connected to the inner wall of the connecting frame 18. A water circulation mechanism 8 is fixedly connected to the upper surface of the water tank 1 located inside the arc-shaped hollow plate 3. The water circulation mechanism 8 includes a fixing plate 81 fixedly connected to the upper surface of the water tank 1. A water pump 82 is fixedly connected to the outer wall of the fixing plate 81. A water guide pipe 83 is fixedly connected to the outlet end of the water pump 82. The side end of the water guide pipe 83 passes through the outer wall of the arc-shaped hollow plate 3 and is fixedly connected to a filter assembly 6. The filter assembly 6 includes a filter box 61 fixedly connected to the upper surface of the water tank 1. A viewing tube 21 is fixedly embedded on the upper surface of the filter box 61 located at the inlet of the return pipe 84. The viewing tube 21 can observe the filter assembly 6. The filter box 61 is fixedly connected to the sides of the water guide pipe 83 and the return pipe 84, respectively. The inner wall of the filter box 61 is connected to the support mesh plate 62. The top of the filter box 61 is connected to the box cover 63 by bolts. Multiple limiting strips 64 are fixedly connected to the lower surface of the box cover 63 and the inner wall of the filter box 61. The outer walls of the support mesh plate 62 and the multiple limiting strips 64 are connected to the filter cartridge 65. The inner wall of the filter cartridge 65 is fixedly connected to the filter cloth sleeve 66. The inner wall of the filter cloth sleeve 66 is connected to the filter sponge cylinder 67. This mechanism can filter circulating water and improve the quality of circulating water. The outer wall of the filter assembly 6 is fixedly connected to the return pipe 84. The bottom end of the return pipe 84 passes through the inner wall of the water tank 1. The outer wall of the water tank 1 is fixedly connected to the water injection valve 85. This mechanism enables the device to have the function of spraying water recycling and improves the environmental performance of the device.

[0033] The inner wall of the arc-shaped hollow plate 3 and the outer wall of the U-shaped hollow cover 10 are fixedly connected to a metal mesh plate 22. The metal mesh plate 22 is located above the exhaust one-way valve 713. After being treated at low temperature, the metal mesh plate 22 can perform dehumidification pretreatment on the air after dust settling, thereby improving the dehumidification effect. The inner wall of the arc-shaped hollow plate 3 and the outer wall of the U-shaped hollow cover 10 are fixedly connected to a third partition plate 23. Multiple conical air inlets 24 are fixedly embedded at the top of the third partition plate 23. The small openings of the conical air inlets 24 face downwards to prevent dust backflow. The inner wall of the air inlet at the top of the arc-shaped hollow plate 3 is fixedly connected to an anti-foreign object mesh plate 25, which can prevent large impurities from entering the device.

[0034] The axial flow fan 73, the small piston air pump 710, the water pump 82, the motor 92, and the electromagnet 910 are all electrically connected to the output terminal of the PLC controller 19 via wires. The light intensity sensing component 91 is electrically connected to the output terminal of the PLC controller 19 via wires. The light intensity sensing component 91 is a light intensity sensor that can quickly and sensitively detect the intensity of light and feed the detection result back to the PLC controller 19. The PLC controller 19 controls the working power of the electromagnet 910. The normally open solenoid valve 5 and the laser source 93 are electrically connected to an external power supply through the liquid level switch 20. The liquid level switch 20 will automatically start after its contact surface touches the water surface. The above-mentioned power supply equipment and electrical connections are existing technologies and will not be described in detail here.

[0035] The operating principle of this invention is described as follows: When dust is generated during tunnel construction and a spraying device is needed to suppress it, water is first added to the water tank 1 through the filling valve. After the water tank 1 is full, the water is injected into the filling area 12 through the conduit 4 and sprayed out through the impact atomizing nozzle 13. It also flows into the bottom of the arc-shaped hollow plate 3 through the normally open solenoid valve 5. Finally, after the liquid surface comes into contact with the liquid level switch 20, the liquid level switch 20 is triggered, which controls the normally open solenoid valve 5 to be energized and closed, and the laser source 93 is activated, so that the laser source 93 emits a laser beam of standard light intensity. At the same time, the water tank 1 is filled with water. If the liquid level drops, the liquid level switch 20 de-energizes the normally open solenoid valve 5 to open it in time to replenish the water. Then, the spraying device is sprayed out through the roller 2. The spray device is adjusted to the edge of the tunnel to avoid interfering with tunnel construction. Then, the PLC controller 19 starts the water pump 82 and axial flow fan 73. The water pump 82 transports water from the bottom of the arc-shaped hollow plate 3 to the filter assembly 6 and return pipe 84 via the water guide pipe 83, finally injecting it into the water tank 1. The water in the water tank 1 then continues to flow along the conduit 4 into the water-filling area 12 of the U-shaped hollow cover 10, ensuring that the impact-type atomizing spray can continuously spray water mist for dust suppression. When the axial flow fan 73 draws air from inside the arc-shaped hollow plate 3 and delivers it to the bend 77, the arc-shaped hollow plate 3 draws in outside air through the air inlet at the anti-foreign object mesh 25 to maintain air pressure balance. The process of replenishing outside air will bring... Dust inside the tunnel enters the arc-shaped hollow plate 3, passes through the conical air inlet 24, and flows into the U-shaped magnetic plate 17. The downward-facing opening of the conical air inlet 24 prevents dust backflow. The dust is then affected by the magnetic field of the U-shaped magnetic plate 17. The magnetic field charges the dust particles, enhancing the attraction between the dust and the oppositely charged water mist. This also guides and aggregates the dust, reducing airflow interference and promoting a more orderly approach and combination with the water mist, thus accelerating the settling speed of the dust under spraying action. The dust-laden water is then filtered through the filter assembly 6 and returned to the water tank 1 for recycling. The dust-laden water is subsequently filtered by the filter sponge cylinder 67, the filter cloth sleeve 66, and the filter cartridge 65. Finally, the filtered water returns to the water tank 1 through the return pipe 84. At the same time, the purified air is input into the bend pipe 77 through the one-way exhaust valve 16 and the axial flow fan 73. Finally, the clean air is blown to the top of the tunnel through the air distribution hood 78 and the air outlet pipe 79. The device draws air from the top and blows air from the bottom. With the help of the arc-shaped inner wall of the tunnel, a ring airflow can be formed inside the tunnel. The ring airflow can collect dust into the device for dust suppression more quickly and over a wider area. At the same time, multiple spray devices are arranged alternately on both sides of the tunnel according to the depth of the tunnel to improve the effect of the device in treating dust in the air. The device also has the functions of convenient installation and spray water recycling, which can effectively improve the convenience and environmental protection of the device.

[0036] When the clean air after dust removal is discharged through the output end of the bend 77, the PLC controller 19 controls the motor 92 and the light intensity sensing component 91 to work. At the same time, the laser source 93 emits a laser beam of standard light intensity to irradiate the light intensity sensing component 91. If the cleanliness of the clean air after dust removal is not up to standard and still contains a large number of dust particles, the dust particles will cause excessive scattering of the standard laser beam as they pass through the laser beam of the laser source 93. This will weaken the light intensity of the laser beam irradiating the light intensity sensing component 91. At this time, the light intensity sensing component 91 sends a signal to the PLC controller 19 indicating that the air dust removal effect is not up to standard. The PLC controller 19 then controls the start of the electromagnet 910. The electromagnet 910 can effectively increase the magnetic field of the U-shaped magnetic plate 17. The stronger the magnetic field, the faster the dust accumulates, thereby increasing the dust removal efficiency. The dust spraying system effectively reduces dust. Simultaneously, the magnetic field strength generated by the electromagnet 910 is inversely proportional to the data detected by the light intensity sensor 91. If the dust pollution level is low, the electromagnet 910 does not operate, reducing the device's power consumption. Meanwhile, the PLC controller 19 controls the motor 92, which rotates two glass covers 94 via a connecting rod 95. The rotating glass covers 94 can be cleaned by a cotton cloth cover 98, preventing dust particles from adhering to the surface of the glass covers 94 and interfering with the detection effect. The glass covers 94 also prevent dust particles from adhering to the light intensity sensor 91 and causing detection interference. This mechanism, through the dust suppression feedback mechanism 9, enables the underground engineering spraying device to adjust the spraying dust suppression intensity, allowing the device to adapt to different dust pollution levels and effectively improve the dust suppression effect of the underground engineering spraying device.

[0037] When the underground engineering sprinkler system is spraying to suppress dust, the PLC controller 19 controls the small piston air pump 710 to operate. The small piston air pump 710 continuously and stably delivers clean compressed air to the hollow block 71 through the activated carbon filter tank 716. The compressed air then enters the vortex tube 74, where it generates vortex motion, creating a temperature gradient and resulting in partial heating and partial cooling of the air. The hot air generated at the hot end of the vortex tube 74 is discharged through a pipe connected to the pipe joint 76, while the cold end of the vortex tube 74 generates low-temperature air at -3°C to 5°C. This low-temperature air is input into the cooling zone 14 at the top of the U-shaped hollow cover 10, cooling the heat-conducting plate 711 and the metal rod 712. The low-temperature air then passes through the exhaust unidirectional... Valve 713 delivers air to the metal mesh plate 22 and cools it down. Simultaneously, the low-temperature air, along with the clean air sprayed for dust suppression, is discharged into the curved pipe 77. When the clean air carrying moisture passes through the low-temperature heat-conducting plate 711 and the metal rod 712, the moisture in the air liquefies into water droplets upon cooling and separates. The water droplets fall onto the second partition 15 and return to the bottom of the arc-shaped hollow plate 3 for recycling through the drain pipe 714 and the drain check valve 715. Finally, the dry and clean air is discharged through the curved pipe 77. This mechanism enables the underground engineering spraying device to dehumidify the air after dust suppression and prevent water mist from spreading. It can not only effectively improve the visibility of workers but also avoid the damp environment of the tunnel construction and the damage of construction equipment to water stains, further improving the reliability of tunnel construction.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An underground engineering sprinkler system, comprising a water tank (1), characterized in that, Rollers (2) are fixedly connected to the four corners of the lower surface of the water tank (1). An arc-shaped hollow plate (3) that matches the arc-shaped inner wall of the tunnel is fixedly connected to the upper surface of the water tank (1). A conduit (4) and a normally open solenoid valve (5) are fixedly connected to the upper surface of the water tank (1). A liquid level switch (20) for controlling the normally open solenoid valve (5) is fixedly connected to the inner wall of the bottom end of the arc-shaped hollow plate (3). The top ends of the conduit (4) and the normally open solenoid valve (5) are located at the arc. Inside the hollow plate (3), the top end of the conduit (4) is fixedly connected to a U-shaped hollow cover (10). The top end and side wall of the U-shaped hollow cover (10) are fixedly connected to the inner wall of the hollow plate (3). A first partition (11) is fixedly connected to the inner wall of the U-shaped hollow cover (10). The lower surface of the first partition (11) and the bottom of the U-shaped hollow cover (10) together form a water-filling area (12). The U-shaped hollow cover (10) is located in the water-filling area (12). The outer wall of the first partition (11) is fixedly connected to multiple impact atomizing nozzles (13). The upper surface of the first partition (11) and the top of the U-shaped hollow cover (10) together form a cooling zone (14). The outer wall of the U-shaped hollow cover (10) in the cooling zone (14) and the inner wall of the top of the arc-shaped hollow plate (3) are fixedly connected to a second partition (15). The upper surface of the second partition (15) is fixedly connected to multiple one-way exhaust valves (16). The arc-shaped hollow plate (3) A dust suppression mechanism (7) is fixedly connected to the upper surface. A water circulation mechanism (8) is fixedly connected to the upper surface of the water tank (1) located inside the arc-shaped hollow plate (3). Two through holes are opened at the bottom side wall edge of the arc-shaped hollow plate (3), and a U-shaped magnetic plate (17) is fixedly connected to the hole walls of the two through holes. A connecting frame (18) is fixedly connected to the outer wall of the arc-shaped hollow plate (3), and a PLC controller (19) is fixedly connected to the inner wall of the connecting frame (18).

2. The underground engineering sprinkler system according to claim 1, characterized in that, The dust suppression mechanism (7) includes a hollow block (71) fixedly connected to the upper surface of the arc-shaped hollow plate (3). A vertical plate (72) is fixedly connected to the upper surface of the hollow block (71). An axial flow fan (73) and a vortex tube (74) are respectively provided on both sides of the vertical plate (72). The air inlet end of the axial flow fan (73) passes through the inner wall of the arc-shaped hollow plate (3). The cold end of the vortex tube (74) passes through the inner wall of the arc-shaped hollow plate (3) and is located inside the top of the U-shaped hollow cover (10). The hot end of the vortex tube (74) passes through the hollow block. On the upper surface of (71), a connecting cover (75) is provided on the outer side of the hot end of the vortex tube (74). The bottom end of the connecting cover (75) is fixedly connected to the upper surface of the hollow block (71). A pipe joint (76) is fixedly connected to the outer surface of the connecting cover (75). The output end of the axial flow fan (73) is fixedly connected to a bend (77). The output end of the bend (77) passes through the upper surface of the hollow block (71) and extends downward. The output end of the bend (77) is fixedly connected to a gas distribution hood (78). The side wall of the gas distribution hood (78) is connected to... The outer wall of the water tank (1) is fixedly connected, and the bottom outer wall of the air distribution hood (78) is fixedly connected to multiple air outlet pipes (79). The outer wall of the hollow block (71) is fixedly connected to a small piston air pump (710). The output end of the small piston air pump (710) passes through the inner wall of the hollow block (71). The inner wall of the air distribution hood (78) is connected to a dust suppression feedback mechanism (9). The outer wall of the U-shaped hollow hood (10) located in the cooling zone (14) has a rectangular through hole, and the wall of the rectangular through hole is fixedly connected to a heat conduction plate (711). Multiple metal rods (712) are fixedly embedded on the outer wall of the hot plate (711). The U-shaped hollow cover (10) is located in the cooling zone (14) and its outer wall is fixedly connected to an exhaust one-way valve (713) and a drain pipe (714). The output end of the exhaust one-way valve (713) is located below the second partition (15). The bottom end of the drain pipe (714) passes through the outer wall of the U-shaped hollow cover (10) and is fixedly connected to the drain one-way valve (715). The suction end of the small piston air pump (710) is connected to an activated carbon filter canister (716).

3. The underground engineering sprinkler device according to claim 2, characterized in that, The dust feedback mechanism (9) includes a light intensity sensing component (91) and a motor (92) fixedly embedded in the outer wall of the gas distribution hood (78). A laser source (93) cooperating with the light intensity sensing component (91) is fixedly connected to the outer wall of the water tank (1). Glass covers (94) are provided on the outer sides of both the light intensity sensing component (91) and the laser source (93). The outer walls of the two glass covers (94) are connected to the inner wall of the gas distribution hood (78) and the outer wall of the water tank (1) respectively through sealed bearings. The outer walls of the two glass covers (94) are fixedly connected to a common connecting... The output end of the motor (92) is fixedly connected to the inner wall of one of the glass covers (94). The inner wall of the air distribution cover (78) is fixedly connected to a support rod (96). The rod wall of the support rod (96) is fixedly connected to a rubber block (97). The outer wall of the rubber block (97) is fitted with a cotton cloth cover (98) for cleaning the surface of the glass cover (94). The outer wall of the U-shaped magnetic plate (17) is fixedly connected to a mounting cover (99). The inner wall of the mounting cover (99) and the outer wall of the U-shaped magnetic plate (17) are both fixedly connected to an electromagnet (910).

4. The underground engineering sprinkler system according to claim 1, characterized in that, The water circulation mechanism (8) includes a fixed plate (81) fixedly connected to the upper surface of the water tank (1). A water pump (82) is fixedly connected to the outer wall of the fixed plate (81). A water guide pipe (83) is fixedly connected to the outlet end of the water pump (82). The side end of the water guide pipe (83) passes through the outer wall of the arc-shaped hollow plate (3) and is fixedly connected to a filter assembly (6). A return pipe (84) is fixedly connected to the outer wall of the filter assembly (6). The bottom end of the return pipe (84) passes through the inner wall of the water tank (1). A water injection valve (85) is fixedly connected to the outer wall of the water tank (1).

5. The underground engineering sprinkler system according to claim 4, characterized in that, The filter assembly (6) includes a filter box (61) fixedly connected to the upper surface of the water tank (1). The two sides of the filter box (61) are fixedly connected to the side ends of the water guide pipe (83) and the return pipe (84), respectively. The inner wall of the filter box (61) is connected to a support mesh plate (62). The top of the filter box (61) is connected to a box cover (63) by bolts. The lower surface of the box cover (63) and the inner wall of the filter box (61) are both fixedly connected to multiple limiting strips (64). The outer walls of the support mesh plate (62) and the multiple limiting strips (64) are connected to a filter cartridge (65). The inner wall of the filter cartridge (65) is fixedly connected to a filter cloth sleeve (66). The inner wall of the filter cloth sleeve (66) is connected to a filter sponge cylinder (67).

6. The underground engineering sprinkler system according to claim 5, characterized in that, The filter box (61) has a viewing tube (21) fixedly embedded on its upper surface at the inlet of the return pipe (84).

7. The underground engineering sprinkler system according to claim 1, characterized in that, The inner wall of the arc-shaped hollow plate (3) and the outer wall of the U-shaped hollow cover (10) are fixedly connected to a metal mesh plate (22), which is located above the exhaust one-way valve (713).

8. The underground engineering sprinkler system according to claim 3, characterized in that, The center of the light intensity sensing component (91) and the laser source (93) are on the same horizontal line, and the horizontal line is located directly below the output end of the bent tube (77).

9. The underground engineering sprinkler system according to claim 1, characterized in that, The inner wall of the arc-shaped hollow plate (3) and the outer wall of the U-shaped hollow cover (10) are fixedly connected to a third partition (23). Multiple conical air intake hoppers (24) are fixedly embedded at the top of the third partition (23). A foreign object protection mesh plate (25) is fixedly connected to the inner wall of the air intake hole at the top of the arc-shaped hollow plate (3).

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