Cooling and dust removing equipment for tunnel construction

Abstract

The utility model discloses cooling and dedusting equipment for tunnel construction, which belongs to the technical field of tunnel construction and comprises a water guide main pipeline, a plurality of spray mounting pipes and spray components. The water guide main pipeline is arranged along the whole contour of the tunnel vault; the plurality of spraying mounting pipes are distributed at equal intervals along the water guide main pipeline, and self-adaptive leaking stoppage structures are arranged in the spraying mounting pipes; the spraying assembly is detachably mounted on the spraying mounting pipe and comprises a water inlet pipe, a magnetizing pipe and a multi-angle nozzle which are coaxially arranged; after the spraying assembly is installed on the spraying installation pipe, the self-adaptive leaking stoppage structure is opened, and water flow in the water guiding main pipeline enters the magnetizing pipe through the water inlet pipe to be magnetized. According to the cooling and dust removing equipment for tunnel construction, the number of the multi-angle nozzles can be freely combined and installed according to construction requirements, the flexibility of the equipment is remarkably improved, the positions and the number of spraying points can be dynamically adjusted according to the tunnel construction progress, dust concentration distribution and temperature changes, and accurate regulation and control are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel construction technology, and in particular relates to a cooling and dust removal device for tunnel construction. Background Technology

[0002] A good tunnel working environment is essential for ensuring tunnel engineering quality, improving work efficiency, reducing the incidence of disasters, and protecting the physical and mental health of construction workers. In modern underground construction, dust and high temperatures have become significant factors contributing to the harsh environment inside tunnels. Therefore, the use of equipment capable of dust suppression, fog reduction, and cooling during tunnel construction is indispensable.

[0003] According to the search, Chinese patent CN207715178U, "An Automatic Fogging, Dust Removal and Cooling System for Tunnel Construction", mainly discloses an automatic fogging, dust removal and cooling system. Its main feature is that water pipes are arranged every 3 to 5 meters along the entire outline of the tunnel arch. Atomizing devices are installed at the outlet of the water pipes to remove fog and dust, and a cooling device is installed at the main water pipe to cool the water in the pipes.

[0004] In the aforementioned technologies, the atomizing devices are fixedly arranged along the entire contour of the tunnel arch, spaced 3-5m apart. This makes it impossible to dynamically adjust the position and number of spray points according to construction progress, dust concentration distribution, or temperature changes. Such a fixed arrangement is difficult to adapt to the complex and ever-changing construction environment of tunnels, resulting in poor dust suppression and cooling effects in local areas. It also wastes water resources. Furthermore, the use of ordinary water spray has a low dust suppression efficiency (usually 60%-70%), and ordinary water mist has a weak ability to capture PM2.5-level ultrafine dust, making it difficult to meet the stringent environmental quality requirements of modern tunnel construction.

[0005] Therefore, we propose a cooling and dust removal device for tunnel construction. Utility Model Content

[0006] The purpose of this invention is to solve the problem that the fixed arrangement of conventional atomizing devices in the prior art is difficult to adapt to the complex and ever-changing construction environment of tunnels, and to propose a cooling and dust removal device for tunnel construction.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A cooling and dust removal device for tunnel construction includes:

[0009] The main water diversion pipeline is laid out along the entire outline of the tunnel arch.

[0010] Multiple spray installation pipes are equidistantly distributed along the main water supply pipe, and an adaptive leak-sealing structure is provided inside each spray installation pipe;

[0011] The spray assembly is detachably mounted on the spray mounting pipe, including a coaxially arranged water inlet pipe, a magnetized pipe, and multi-angle nozzles;

[0012] After the spray assembly is installed on the spray mounting pipe, the adaptive leak-stopping structure is activated, and the water in the main water pipe enters the magnetization pipe through the inlet pipe for magnetization. The magnetized water is then atomized and sprayed out through the multi-angle nozzle.

[0013] Preferably, the adaptive leak-sealing structure includes a sealing ring installed inside the spray installation pipe, and a sealing column is slidably disposed inside the sealing ring, with the sealing column and the sealing ring connected by a spring.

[0014] Preferably, the end of the sealing post near the sealing ring is provided with an angle.

[0015] Preferably, the water inlet pipe has a threaded portion and a water inlet portion. The threaded portion is adapted to the internal thread provided on the inner wall of the spray mounting pipe. The side wall of the water inlet portion has multiple water inlets. After the threaded portion is screwed to the spray mounting pipe, the water inlet portion lifts up the sealing column and extends into the main water guide pipe.

[0016] Preferably, a sealing gasket is provided on the upper edge of the threaded portion.

[0017] Preferably, the magnetizing tube includes an outer tube and an inner tube that are coaxially rotatable, and two permanent magnets are symmetrically arranged on the inner wall of the inner tube.

[0018] Preferably, the outer circumferential surface of the inner tube is provided with a plurality of rollers at equal intervals, the rollers are in contact with the inner wall of the outer tube, and the inner tube is provided with a plurality of helical blades.

[0019] Preferably, the multi-angle nozzle has a liquid distribution chamber, which is connected to multiple flow channels. The output end of each flow channel is provided with an atomizing nozzle, and a switch structure is also provided in the liquid distribution chamber.

[0020] Preferably, the switch structure includes a rotating ring that is rotatably disposed in the dispensing chamber and sealed against the inner wall of the dispensing chamber. The bottom of the rotating ring is provided with an adjusting rod that extends to the outside of the multi-angle nozzle. The side wall of the rotating ring is provided with a plurality of openings corresponding to the flow channels.

[0021] In summary, the technical effects and advantages of this utility model are as follows: This cooling and dust removal equipment for tunnel construction has a spray connection pipe installed on the main water supply pipeline. An adaptive leak-sealing structure is installed inside the spray connection pipe, allowing for free combination and installation of multiple angle nozzles according to construction needs. When no multiple angle nozzles are installed, the adaptive leak-sealing structure automatically seals to prevent water leakage. After installing multiple angle nozzles, the structure automatically connects, ensuring smooth water flow. This significantly improves the flexibility of the equipment, enabling dynamic adjustment of the position and number of spray points based on tunnel construction progress, dust concentration distribution, and temperature changes, achieving precise control.

[0022] By magnetizing the water sprayed through a magnetization tube, ordinary water is transformed into magnetized water, reducing the surface tension of the water and refining water molecule clusters. The magnetized water mist increases the capture efficiency of PM2.5 / PM10 dust to 85%–95%, while the evaporation heat absorption efficiency is improved, and the temperature drop can reach 6–8℃, significantly improving the tunnel working environment.

[0023] The self-adaptive leak-sealing structure inside the spray connection pipe automatically connects when the spray assembly is installed and automatically closes after the spray assembly is disassembled, making it easy to operate and highly reliable. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the spray installation pipe of this utility model in the closed state;

[0026] Figure 3 This is a schematic diagram of the spray installation pipe of this utility model in the open state;

[0027] Figure 4 This is a schematic diagram of the spray assembly in this utility model;

[0028] Figure 5 This is a schematic diagram of the exploded structure of the inner tube in this utility model;

[0029] Figure 6 This is a cross-sectional view of the multi-angle nozzle in this utility model.

[0030] In the diagram: 1. Main water supply pipe; 2. Spray installation pipe; 21. Sealing ring; 22. Sealing column; 23. Spring; 3. Spray assembly; 31. Inlet pipe; 311. Threaded part; 312. Inlet part; 313. Inlet; 32. Magnetized tube; 321. Outer tube; 322. Inner tube; 323. Permanent magnet; 324. Roller; 325. Spiral blade; 33. Multi-angle nozzle; 331. Liquid distribution chamber; 332. Flow channel; 333. Atomizing nozzle; 334. Rotary ring; 335. Adjusting rod. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0032] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0033] Reference Figure 1-4 A cooling and dust removal device for tunnel construction includes a main water pipe 1, multiple spray installation pipes 2, and a spray assembly 3.

[0034] The main water diversion pipeline 1 is laid out along the entire outline of the tunnel arch. The main water diversion pipeline 1 is fixed to the tunnel arch by pipe clamps, so as not to affect the normal construction inside the tunnel. The end of the main water diversion pipeline 1 is connected to a high-pressure water pump, and the water is pumped into the main water diversion pipeline 1 by the high-pressure water pump.

[0035] Multiple spray installation pipes 2 are equidistantly distributed along the main water supply pipe 1. In this embodiment, the spray installation pipes 2 are installed at 3m intervals. An adaptive leak-sealing structure is provided inside the spray installation pipe 2. The spray assembly 3 can be detachably installed on the spray installation pipe 2. When the spray assembly 3 is installed, it automatically connects and when the spray assembly 3 is removed, it automatically closes. The operation is simple and highly reliable. The number of spray assemblies 3 can be freely combined and installed according to construction needs. When the spray assembly 3 is not installed, the adaptive leak-sealing structure automatically closes to prevent water leakage. After the spray assembly 3 is installed, the structure automatically connects to ensure smooth water flow. This significantly improves the flexibility of the equipment and can dynamically adjust the position and number of spray points according to the tunnel construction progress, dust concentration distribution, and temperature changes to achieve precise control.

[0036] Reference Figure 1-3 The adaptive leak-sealing structure includes a sealing ring 21 installed inside the spray installation pipe 2. A sealing column 22 is slidably installed inside the sealing ring 21. The sealing column 22 is connected to the sealing ring 21 by a spring 23. Under normal conditions, the sealing column 22 is pulled by the spring 23, causing the sealing column 22 to be inserted into the inner hole of the sealing ring 21 to achieve sealing. When the spray assembly 3 is installed inside the spray installation pipe 2, the spray assembly 3 will push the sealing column 22 upward, causing the sealing column 22 to separate from the sealing ring 21, allowing water in the main water pipe 1 to enter the spray installation pipe 2 and supply water to the spray assembly 3.

[0037] The sealing column 22 has an angled end near the sealing ring 21. After the spray assembly 3 is removed, the sealing column 22 will reset under the elastic force of the spring 23. The angled setting makes it easy for the sealing column 22 to be smoothly inserted into the sealing ring 21 to achieve a seal when it resets.

[0038] Reference Figure 4 The spray assembly 3 includes a water inlet pipe 31, a magnetized pipe 32, and a multi-angle nozzle 33 arranged coaxially, wherein the water inlet pipe 31, the magnetized pipe 32, and the multi-angle nozzle 33 are internally interconnected.

[0039] Reference Figure 3-5After the spray assembly 3 is installed on the spray installation pipe 2, the adaptive leak-sealing structure is activated. The water in the main water pipe 1 flows through the inlet pipe 31 into the magnetization pipe 32 and is magnetized. The magnetized water is atomized and sprayed out through the multi-angle nozzle 33. After magnetization, the surface tension of the water decreases by about 10% to 15%, which enhances the ability to wet and adsorb dust particles. The polarity of water molecules is enhanced, making it easier to combine with charged dust particles. Small molecule water mist is more likely to encapsulate PM2.5 / PM10 particles and accelerate sedimentation. At the same time, the efficiency of water mist evaporation and heat absorption is improved, and the cooling effect is improved by 20% to 30% compared with the same period last year.

[0040] Reference Figure 3-5 The water inlet pipe 31 has a threaded part 311 and a water inlet part 312. The threaded part 311 is adapted to the internal thread provided on the inner wall of the spray mounting pipe 2. When the spray assembly 3 is connected to the spray mounting pipe 2, the threaded part 311 is tightened by engaging with the internal thread of the spray mounting pipe 2. When tightened, the water inlet part 312 pushes the sealing column 22 upward. The side wall of the water inlet part 312 has multiple water inlets 313. After the threaded part 311 is screwed to the spray mounting pipe 2, the water inlet part 312 pushes up the sealing column 22 and extends into the main water guide pipe 1. The water in the main water guide pipe 1 enters the water inlet pipe 31 through the water inlets 313 on the water inlet part 312 and flows into the magnetized pipe 32 and the multi-angle nozzle 33.

[0041] A sealing gasket is provided on the upper edge of the threaded part 311. Since the threaded connection has poor sealing performance, the sealing gasket can improve the sealing performance and reduce the risk of water leakage when the threaded part 311 is connected to the spray installation pipe 2.

[0042] Reference Figure 3-5 The magnetizing tube 32 includes an outer tube 321 and an inner tube 322 that are coaxially rotatable. Two permanent magnets 323 are symmetrically arranged on the inner wall of the inner tube 322 to form a uniform magnetic field region. The magnetic field direction is radial and perpendicular to the water flow direction, ensuring that the water flow can fully cut the magnetic field lines when it passes through. When the water flows through the inner tube 322, the water flow direction is perpendicular to the magnetic field direction. The charged particles in the water flow are subjected to the Lorentz force in the magnetic field, and their motion trajectory is deflected, which causes the hydrogen bonds between water molecules to be broken, and the large molecular clusters are decomposed into small molecular clusters, thus completing the magnetization.

[0043] Multiple rollers 324 are equidistantly arranged on the outer circumference of the inner tube 322. The rollers 324 are in contact with the inner wall of the outer tube 321. Multiple spiral blades 325 are arranged inside the inner tube 322. When the water flow impacts the spiral blades 325, it will drive the inner tube 322 to rotate, causing the position of the permanent magnet 323 to change continuously. The rotational motion causes the water flow to cut the magnetic lines of force more frequently, increasing the number of times the magnetic field acts on the water molecules, thereby improving the magnetization effect. The rotation of the inner tube 322 makes the water flow more evenly distributed in the magnetic field area, ensuring that all water molecules can be fully magnetized. In addition, the rollers 324 are arranged outside the inner tube 322, which helps to reduce the friction between the inner tube 322 and the outer tube 321 when the inner tube 322 rotates, and improves the rotational flexibility of the inner tube 322.

[0044] Reference Figure 3-6 The multi-angle nozzle 33 has a liquid distribution chamber 331, which is connected to multiple flow channels 332. The output end of the flow channels 332 is equipped with an atomizing nozzle 333. Magnetized water enters the multi-angle nozzle 33 and first enters the liquid distribution chamber 331. Then it passes through the flow channels 332 and reaches the atomizing nozzle 333, forming a spray that is sprayed in the tunnel. A switch structure is also provided in the liquid distribution chamber 331. In areas with low dust concentration or suitable temperature, some multi-angle nozzles 33 can be temporarily shut down through the switch structure, concentrating resources for high dust or high temperature areas, improving the operating efficiency of the equipment, and reducing energy and water consumption.

[0045] The switching structure includes a rotating ring 334 rotatably disposed in the dispensing chamber 331 and sealed against the inner wall of the dispensing chamber 331. An adjusting rod 335 extending to the outside of the multi-angle nozzle 33 is provided at the bottom of the rotating ring 334. Rotating the adjusting rod 335 can control the rotation of the rotating ring 334. Multiple openings corresponding to the flow channel 332 are opened on the side wall of the rotating ring 334. When the openings correspond to the flow channel 332, water in the dispensing chamber 331 can enter the flow channel 332 and be atomized and sprayed out through the atomizing nozzle 333. When the atomizing nozzle 333 is temporarily closed, the adjusting rod 335 is rotated to misalign the openings with the flow channel 332, and the rotating ring 334 blocks the input end of the flow channel 332, thereby temporarily shutting down the atomizing nozzle 333.

[0046] Working principle:

[0047] In use, the main water pipe 1 is laid out along the entire outline of the tunnel arch. The main water pipe 1 is fixed to the tunnel arch by pipe clamps. A high-pressure water pump is connected to the end of the main water pipe 1. The high-pressure water pump pumps water into the main water pipe 1. Spray installation pipes 2 are installed at 3m intervals.

[0048] Based on the tunnel construction progress, dust concentration distribution, and temperature changes, the spray assembly 3 is installed on the spray installation pipe 2 at a suitable location. The position and number of spray points are dynamically adjusted. Under normal conditions, the sealing column 22 is pulled by the spring 23, causing the sealing column 22 to be inserted into the inner hole of the sealing ring 21 to achieve sealing. The threaded part 311 is tightened by engaging with the internal thread of the spray installation pipe 2. When tightened, the water inlet 312 pushes the sealing column 22 upward. The water in the main water pipe 1 enters the water inlet pipe 31 through the water inlet 313 on the water inlet 312 and flows into the magnetized pipe 32 and the multi-angle nozzle 33.

[0049] Two permanent magnets 323 are symmetrically arranged on the inner wall of the inner tube 322, forming a uniform magnetic field region. When water flows through the inner tube 322, the direction of water flow is perpendicular to the direction of magnetic field. The charged particles in the water flow are subjected to the Lorentz force in the magnetic field, causing their trajectory to deflect. This leads to the destruction of hydrogen bonds between water molecules, and the decomposition of large molecular clusters into small molecular clusters, thus completing magnetization. When the water flow impacts the spiral blade 325, it drives the inner tube 322 to rotate, causing the position of the permanent magnets 323 to change continuously. The rotational motion causes the water flow to cut the magnetic field lines more frequently, increasing the number of times the magnetic field acts on the water molecules, thereby improving the magnetization effect.

[0050] Magnetized water enters the multi-angle nozzle 33 and first enters the liquid distribution chamber 331. Then, it passes through the flow channel 332 and reaches the atomizing nozzle 333, forming a spray that is sprayed inside the tunnel. In areas with low dust concentration or suitable temperature, some multi-angle nozzles 33 can be temporarily shut down through the switch structure, concentrating resources on high dust or high temperature areas and improving the operating efficiency of the equipment.

[0051] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cooling and dust removal device for tunnel construction, characterized in that, include: The main water diversion pipeline (1) is laid out along the entire outline of the tunnel arch; Multiple spray installation pipes (2) are distributed at equal intervals along the main water supply pipe (1), and an adaptive leak-stopping structure is provided inside the spray installation pipes (2); The spray assembly (3) is detachably mounted on the spray mounting pipe (2) and includes a coaxially arranged water inlet pipe (31), a magnetized pipe (32), and a multi-angle nozzle (33). After the spray assembly (3) is installed on the spray installation pipe (2), the adaptive leak-stopping structure is activated, and the water in the main water pipe (1) enters the magnetization pipe (32) through the inlet pipe (31) and is magnetized. The magnetized water is atomized and sprayed out through the multi-angle nozzle (33).

2. The cooling and dust removal equipment for tunnel construction according to claim 1, characterized in that, The adaptive leak-sealing structure includes a sealing ring (21) installed in the spray installation pipe (2), and a sealing column (22) is slidably and sealingly arranged inside the sealing ring (21). The sealing column (22) and the sealing ring (21) are connected by a spring (23).

3. The cooling and dust removal equipment for tunnel construction according to claim 2, characterized in that, The sealing column (22) is provided with an angle at one end near the sealing ring (21).

4. The cooling and dust removal equipment for tunnel construction according to claim 2, characterized in that, The water inlet pipe (31) has a threaded part (311) and a water inlet part (312). The threaded part (311) is adapted to the internal thread provided on the inner wall of the spray installation pipe (2). The side wall of the water inlet part (312) has multiple water inlets (313). After the threaded part (311) is screwed to the spray installation pipe (2), the water inlet part (312) lifts up the sealing column (22) and extends into the main water pipe (1).

5. The cooling and dust removal equipment for tunnel construction according to claim 4, characterized in that, A sealing gasket is provided on the upper edge of the threaded portion (311).

6. The cooling and dust removal equipment for tunnel construction according to claim 1, characterized in that, The magnetizing tube (32) includes an outer tube (321) and an inner tube (322) that are coaxially rotatable. Two permanent magnets (323) are symmetrically arranged on the inner wall of the inner tube (322).

7. The cooling and dust removal equipment for tunnel construction according to claim 6, characterized in that, The inner tube (322) has multiple rollers (324) evenly spaced on its outer circumferential surface. The rollers (324) are in contact with the inner wall of the outer tube (321), and the inner tube (322) has multiple spiral blades (325).

8. The cooling and dust removal equipment for tunnel construction according to claim 1, characterized in that, The multi-angle nozzle (33) has a liquid distribution chamber (331) inside, the liquid distribution chamber (331) is connected to multiple flow channels (332), the output end of the flow channel (332) is provided with an atomizing nozzle (333), and a switch structure is also provided in the liquid distribution chamber (331).

9. A cooling and dust removal device for tunnel construction according to claim 8, characterized in that, The switch structure includes a rotating ring (334) that is rotatably disposed in the liquid distribution chamber (331) and sealed against the inner wall of the liquid distribution chamber (331). The bottom of the rotating ring (334) is provided with an adjusting rod (335) that extends to the outside of the multi-angle nozzle (33). The side wall of the rotating ring (334) is provided with multiple openings corresponding to the flow channel (332).

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