Dustproof and dust suppression equipment for tunnel construction

Abstract

This invention discloses a dust suppression device for tunnel construction, relating to the field of tunnel construction technology. It includes a dust collection box with an air inlet on one side and an exhaust outlet on the other. A partition is fixedly arranged inside the dust collection box, forming a dust collection chamber with the box wall. A drain outlet is located at the bottom of the partition. A spray mechanism is installed inside the dust collection chamber to suppress dust in the air drawn into it. A drain box is fixedly arranged at the bottom of the dust collection box, containing two sets of baffles symmetrically arranged, forming a drain chamber between the two baffles. The flocculation cylinder discharges flocculated wastewater and sludge into the drain chamber. Because the second drain port is closed, the sludge in the drain chamber can achieve a stable settling effect, thereby ensuring rapid mud-water separation and avoiding interference.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction technology, and in particular to a dust control and suppression device for tunnel construction. Background Technology

[0002] During tunnel construction, drilling, blasting, excavation, and muck removal operations generate large amounts of dust. This dust not only severely pollutes the working environment and endangers the health of construction workers, but may also cause safety accidents such as explosions. Therefore, effective dust prevention and suppression measures are an indispensable part of tunnel construction.

[0003] Currently, the most commonly used dust suppression equipment in tunnel construction is spray dust collection. The general workflow is as follows: dust-laden air is drawn into the dust collection equipment's housing, where atomized water is sprayed through the system to fully contact the dust particles, causing them to wet, become heavier, and settle, thus purifying the air. The treated air is then discharged back into the tunnel. While this spray dust collection method can reduce the concentration of dust in the air to some extent, it has a significant drawback: extremely high water consumption. In tunnel construction environments, water supply is often scarce, and excessive water consumption not only increases construction costs but can also make dust collection operations unsustainable in water shortages.

[0004] To reduce water consumption, existing technologies have attempted to recycle and reuse wastewater after spraying. A common practice is to install filters in dust collection equipment to filter the collected wastewater, removing larger particles, and then recirculate the water back to the spraying system for reuse. However, this method has significant limitations: filters typically only intercept larger particles, and are ineffective at removing fine dust particles suspended in the wastewater (especially micron- and submicron-sized particles). These fine particles can easily clog nozzles during circulation, affecting spray performance, and may even be re-atomized and re-enter the air, reducing dust collection efficiency and accelerating equipment wear.

[0005] To address the shortcomings of traditional filter screens in filtration accuracy, some improvement technologies have proposed adding flocculants to wastewater recycling systems. Adding flocculants to wastewater causes fine particles that are difficult to filter to coalesce into larger flocs, making them easier for subsequent filtration devices to trap. However, this approach faces a difficult-to-resolve contradiction in practical operation: dust generation during tunnel construction is continuous, requiring continuous and uninterrupted dust suppression spraying. However, the process of adding flocculants and allowing fine particles to fully flocculate, settle, or filter requires a certain amount of reaction and settling time. If spraying is paused to treat wastewater to ensure flocculation effectiveness, dust suppression will be interrupted, and the dust concentration in the tunnel will rapidly rise, failing to meet the requirements for continuous dust suppression. Conversely, if wastewater is allowed to pass directly and quickly through the filtration system without sufficient flocculation treatment to maintain continuous dust suppression, a large number of uncoagulated fine particles will penetrate the filter screen, leading to deterioration of the circulating water quality. Over long-term operation, this will also cause the system to fail, preventing the truly efficient recycling of water resources. Summary of the Invention

[0006] This invention provides a dust suppression device for tunnel construction, which can solve the following problems existing in the prior art: 1) Filter screens can usually only intercept larger particles of impurities, but they are difficult to effectively filter out fine dust particles suspended in sewage (especially micron and submicron particles); 2) The process of adding flocculants and allowing fine particles to fully flocculate, settle or filter requires a certain reaction time and settling time, so the machine needs to be stopped, which leads to the cessation of dust reduction.

[0007] A dust control and suppression device for tunnel construction includes a dust collection box, with an air inlet on one side of the box wall and an air outlet on the other side. The dust collector is fixedly equipped with partitions, which together with the dust collector wall form a dust collection chamber. A drain port is opened at the bottom of the partitions, and a spraying mechanism is provided in the dust collection chamber to suppress dust in the air drawn into the dust collection chamber. The dust collector is equipped with a drain box at the bottom, and two sets of baffles are symmetrically arranged inside the drain box, forming a drain cavity between the two baffles. A sludge collection cylinder is provided at the bottom of the drain outlet, and a first drain port is provided at the bottom of the sludge collection cylinder. A first sealing component is provided at the first drain port. A flocculation cylinder is provided at the bottom of the sludge collection cylinder, and a second drain port is provided at the bottom of the flocculation cylinder. A second sealing component is provided at the second drain port.

[0008] Preferably, the bottom of the sewage tank is provided with a sludge settling chamber, and a sewage discharge valve is provided at the bottom of the sludge settling chamber; The side of the baffles facing away from each other forms a circulation chamber with the wall of the sewage tank, and the bottom of the baffles on both sides is provided with filter screens for filtering sludge particles.

[0009] Preferably, the spraying mechanism includes spray pipes arranged in an array within the dust removal chamber, with several sets of spray heads evenly distributed at the bottom of the spray pipes; Each of the spray pipes is connected to a water delivery assembly for delivering water to each spray pipe.

[0010] Preferably, the water supply assembly includes a water supply tank fixed to the outside of the dust collector box, each spray pipe is connected to the water supply tank through a water supply pipe, the end of the water supply tank away from the dust collector box is connected to a water pump through an inlet pipe, the other end of the water pump is connected to the main water pumping pipe, the two circulation chambers are respectively connected to branch water pumping pipes, and the other end of the branch water pumping pipes is connected to the main water pumping pipe.

[0011] Preferably, a guide plate is provided at the bottom of the sewage outlet. The guide plate is fixed to the sewage outlet by a support rod. The side of the guide plate facing the sewage outlet has a structure that is high in the middle and low at the edge. A channel for drainage is formed between the edge of the guide plate and the sewage outlet.

[0012] Preferably, the first sealing assembly includes a first plugging end embedded in the first drain port, and the first sealing assembly also includes a first lifting mechanism for driving the first plugging end to move up and down at the axial end of the first drain port.

[0013] Preferably, the second sealing assembly includes a second sealing end embedded in the second drain port, and the second sealing assembly also includes a second lifting mechanism for driving the second sealing end to rise and fall at the axial end of the second drain port.

[0014] Preferably, the sludge collection cylinder is fixed to the bottom of the support rod by a connecting frame, and the first lifting mechanism includes a first lifting rod fixed to the first sealing end. The end of the first lifting rod away from the first sealing end is slidably inserted into a first limiting end fixedly arranged at the axial end of the sludge collection cylinder opening. The first limiting end is fixed to the opening of the sludge collection cylinder by a connecting rod. Among them, a push rod is fixedly arranged at the end of the first sealing end that is away from the first lifting rod.

[0015] Preferably, the second lifting mechanism includes a second lifting rod fixed to the second sealing end, one end of the second lifting rod away from the second sealing end is slidably inserted into a second limiting end fixed to the shaft end of the flocculation cylinder opening, and the second limiting end is fixed to the opening of the flocculation cylinder by a connecting rod; The bottom of the second sewage discharge port is also provided with several sets of protrusions in a circumferential manner, each protrusion extending toward the axial end of the second sewage discharge port. A top rod is fixedly provided at the bottom of the flocculation cylinder, the outer diameter of which is smaller than the inner diameter of the second sewage discharge port. The second lifting mechanism also includes a lifting assembly, which is used to drive the flocculation cylinder to rise and fall along the axial end.

[0016] Preferably, the flocculation cylinder is rotatably arranged in the annular frame, the annular frame is fixed to one side of the positioning plate, annular teeth are fixedly arranged on the cylinder wall of the flocculation cylinder, a servo motor is fixedly arranged on the positioning plate, and a gear that meshes with the annular teeth is fixedly arranged on the drive end of the servo motor. The sewage discharge box is equipped with a servo electric cylinder, and the drive end of the servo electric cylinder is fixedly connected to the positioning plate.

[0017] This invention provides a dust suppression device for tunnel construction, which has the following beneficial effects: 1) In the initial state, the first sealing component adjusts the first drain port to be in the open state, and the second sealing component adjusts the second drain port to be in the closed state. When the drain port discharges the sewage in the dust removal chamber to the collection cylinder, under the action of gravity, the sewage can pass through the first drain port and be discharged into the flocculation cylinder. When the amount of sewage in the flocculation cylinder reaches a preset threshold, the first sealing component can adjust the first drain port to be in the closed state. By adding flocculant into the flocculation cylinder, the sludge particles in the sewage in the flocculation cylinder can be aggregated, causing small particles in the sewage to agglomerate into large particles. Therefore, it can effectively prevent small particles in the sewage from passing through the filter screen and entering the circulation chambers on both sides. During this process, because the first drain port is in the closed state, Wastewater discharged from the outlet can be temporarily stored in the collection cylinder. After the sludge particles in the flocculation cylinder have completed flocculation, the second discharge port is opened by adjusting the second sealing component, so that the wastewater and sludge in the flocculation cylinder can be discharged into the discharge chamber through the second discharge port. Then, the second discharge port is closed by adjusting the second sealing component, while the first discharge port is opened by adjusting the first sealing component. This process is repeated, so that the flocculation and discharge of sludge particles in wastewater can be effectively achieved without stopping the spraying. Moreover, after the flocculated wastewater and sludge are discharged into the discharge chamber by the flocculation cylinder of this invention, the sludge in the discharge chamber can achieve a stable static effect due to the closure of the second discharge port, thereby ensuring the rapid separation of mud and water and avoiding interference. 2) By setting up a lifting component, the present invention can achieve the effect of automatically adjusting the first sewage discharge port and the second sewage discharge port to automatically and alternately close and open during the process of driving the flocculation cylinder to rise and fall. The present invention does not require setting up other servo devices for adjustment, which not only reduces costs, but also ensures synchronization and stability. 3) After the flocculant is added to the flocculation cylinder, the servo motor drives the gear to rotate. The gear drives the flocculation cylinder to rotate by meshing with the ring tooth, so as to achieve the effect of mixing the flocculation cylinder with the sewage and ensure flocculation efficiency and flocculation effect. Attached Figure Description Figure 1 A three-dimensional structural diagram of a dust suppression device for tunnel construction provided by the present invention. Figure 1 ; Figure 2A three-dimensional structural diagram of a dust suppression device for tunnel construction provided by the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the main structure of a dust suppression and prevention device for tunnel construction provided by the present invention. Figure 4 This invention provides a schematic diagram of the internal structure of a dust suppression and prevention device for tunnel construction. Figure 5 A cross-sectional three-dimensional structural diagram of a dust control and suppression device for tunnel construction provided by the present invention. Figure 1 ; Figure 6 A cross-sectional side view of a dust suppression device for tunnel construction provided by the present invention; Figure 7 A cross-sectional three-dimensional structural diagram of a dust control and suppression device for tunnel construction provided by the present invention. Figure 2 ; Figure 8 for Figure 7 Schematic diagram of the enlarged section at point A in the middle; Figure 9 This is a schematic diagram of the sealing end of a dust suppression device for tunnel construction provided by the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Dust collector; 2. Sewage discharge box; 3. Water supply box; 4. Baffle plate; 5. Sludge collection cylinder; 6. Flocculation cylinder; 7. Baffle; 8. First lifting rod; 101. Exhaust port; 102. Air inlet; 103. Exhaust pipe; 104. Fan; 105. Dust collection chamber; 106. Sewage outlet; 107. Spray pipe; 108. Spray end; 109. Partition plate; 201. Branch water supply pipe; 202. Main water supply pipe; 203. Flocculant delivery pipe; 204. Sewage valve; 301. Water supply pipe; 302. Water inlet pipe; 303. Water pump; 401. Support rod; 402, Channel; 601, Ring frame; 602, Ring gear; 603, Gear; 604, Servo motor; 605, Positioning plate; 606, Servo electric cylinder; 607, First limiting end; 701, Circulation chamber; 702, Filter screen; 703, Sewage discharge chamber; 704, Sludge settling chamber; 705, Push rod; 801, Second sealing end; 802, Protrusion; 803, First sealing end; 804, First sewage discharge port; 805, Push rod; 806, Second limiting end; 807, Second lifting rod; 808, Second sewage discharge port. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0020] Example 1 like Figures 1 to 4 As shown in the figure, an embodiment of the present invention provides a dust suppression device for tunnel construction, including a dust collection box 1. An air inlet 102 is opened on one side of the dust collection box 1, and an air outlet 101 is opened on the other side. The end of the air outlet 101 away from the dust collection box 1 is connected to a fan 104 through an exhaust pipe 103. Specifically, in this embodiment, when performing dust removal treatment for tunnel construction, the dust collection box 1 is moved to the location to be dusted in the tunnel, and the fan 104 is started. The fan 104 generates negative pressure in the dust collection box 1 through the exhaust pipe 103 and the air outlet 101, thereby sucking the dust generated in the tunnel construction into the dust collection box 1 through the air inlet 102, so as to facilitate the subsequent treatment of dust in the air. In one embodiment of this invention, a partition 109 is fixedly arranged inside the dust collection box 1. The partition 109 and the box wall of the dust collection box 1 enclose a dust collection chamber 105. One end of the dust collection chamber 105 is connected to the air inlet 102, and the other end is connected to the air outlet 101. A spraying mechanism is provided inside the dust collection chamber 105 to suppress dust in the air drawn into the dust collection chamber 105. A drain outlet 106 is provided at the bottom of the partition 109. It can be noted that after external dust is drawn into the dust collection chamber 105 through the air inlet 102, the spraying mechanism can be activated to spray water into the dust collection chamber 105 to spray and reduce dust in the air drawn into the dust collection chamber 105. The treated wastewater can be discharged through the drain outlet 106.

[0021] As a further solution in this embodiment, in order to ensure that all the sewage in the dust removal chamber 105 can be stably discharged, the partition 109 is set to a structure with a low center and high edges; specifically, after the spraying mechanism sprays water and mixes it with dust, it can accumulate along the surface of the partition 109 towards the drain port 106 under the action of gravity, so as to avoid some sewage remaining in the dead corners of the partition 109 and being unable to be discharged.

[0022] In this embodiment, a sewage discharge box 2 is fixedly installed at the bottom of the dust removal box 1. A sludge settling chamber 704 is provided at the bottom of the sewage discharge box 2, and a sewage discharge valve 204 is provided at the bottom of the sludge settling chamber 704. Specifically, the sewage in the dust removal chamber 105 is discharged through the sewage discharge port 106 and falls into the sewage discharge box 2. After the sludge settles at the bottom of the sewage discharge box 2, the sewage discharge valve 204 can be opened to discharge all the sludge.

[0023] Furthermore, two sets of baffles 7 are symmetrically and fixedly arranged inside the sewage tank 2. The two baffles 7 enclose a sewage discharge chamber 703, which is located below the sewage outlet 106. The side of the two baffles 7 facing away from each other and encloses the tank wall of the sewage tank 2 to form a circulation chamber 701. The bottom of the two baffles 7 is provided with filter screens 702 for filtering sludge particles. It should be noted that after the sewage is discharged through the sewage outlet 106, it can fall into the sewage discharge chamber 703 under the action of gravity. The sludge particles can flocculate and settle to the bottom of the chamber in the sewage discharge chamber 703. The water filtered by the filter screens 702 can enter the two circulation chambers 701 for subsequent recycling. This not only filters and purifies the sewage but also saves water resources. It should also be noted that you can refer to Figures 5-7 as well as Figure 9 The bottom of the sewage outlet 106 is equipped with a sludge collection cylinder 5, and the bottom of the sludge collection cylinder 5 is equipped with a first sewage discharge port 804. A first sealing component is provided at the first sewage discharge port 804. The bottom of the sludge collection cylinder 5 is equipped with a flocculation cylinder 6, and the bottom of the flocculation cylinder 6 is equipped with a second sewage discharge port 808. A second sealing component is provided at the second sewage discharge port 808. It can be explained that, initially, the first sealing component adjusts the first sewage discharge port 804 to the open state, and the second sealing component adjusts the second sewage discharge port 808 to the closed state. When the sewage outlet 106 discharges the sewage from the dust removal chamber 105 into the sludge collection cylinder 5, under the action of gravity, the sewage can pass through the first sewage discharge port 804 and be discharged into the flocculation cylinder 6. When the amount of sewage in the flocculation cylinder 6 reaches a preset threshold, the first sewage discharge port 804 can be adjusted to the closed state by the first sealing component. By adding flocculant into the flocculation cylinder 6, the sludge particles in the sewage in the flocculation cylinder 6 can be aggregated, so that the small particles in the sewage agglomerate into large particles, thus effectively avoiding Tiny particles in the wastewater pass through the filter screen 702 and enter the circulation chambers 701 on both sides. During this process, since the first discharge port 804 is closed, the wastewater discharged from the discharge port 106 can be temporarily stored in the collection cylinder 5. After the sludge particles in the flocculation cylinder 6 have completed flocculation, the second discharge port 808 is opened by adjusting the second sealing component, so that the wastewater and sludge in the flocculation cylinder 6 can be discharged into the discharge chamber 703 through the second discharge port 808. Then, the second discharge port 808 is closed by adjusting the second sealing component, while the first discharge port 804 is opened by adjusting the first sealing component. This process is repeated, so that the flocculation and discharge of sludge particles in the wastewater can be effectively achieved without stopping the spraying. In this embodiment, after the flocculation cylinder 6 discharges the flocculated wastewater and sludge into the discharge chamber 703, the sludge in the discharge chamber 703 can achieve a stable settling effect because the second discharge port 808 is closed, thereby ensuring rapid separation of mud and water and avoiding interference.

[0024] Example 2 Based on Example 1, please refer to Figures 1-2 as well as Figures 6-7 The spraying mechanism includes spray pipes 107 arranged in an array within the dust removal chamber 105. Several sets of spray nozzles 108 are evenly distributed at the bottom of the spray pipes 107. Each spray pipe 107 is connected to a water supply component to deliver water to each spray pipe 107. It can be explained that during the spraying process, in this embodiment, water is first delivered to each spray pipe 107 through the water supply component, and finally sprayed into the dust removal chamber 105 through the spray nozzles 108 to achieve the effect of spraying and reducing dust in the air entering the dust removal chamber 105.

[0025] For details, please refer to Figures 1-2 and Figure 6 The water supply assembly includes a water tank 3 fixed to the outside of the dust collector 1. Each spray pipe 107 is connected to the water tank 3 via a water supply pipe 301. The end of the water tank 3 furthest from the dust collector 1 is connected to a water pump 303 via an inlet pipe 302. The other end of the water pump 303 is connected to the main pumping pipe 202. The two circulation chambers 701 are respectively connected to branch pumping pipes 201, and the other end of the branch pumping pipes 201 is connected to the main pumping pipe 202. It can be noted that in this embodiment, after... After the filtered water enters the circulation chamber 701, the water pump 303 can be started. The water pump 303 draws the filtered water out of the circulation chamber 701 through the branch water pumping pipes 201 on both sides, and then transports the water to the water tank 3 through the main water pumping pipe 202 and the water inlet pipe 302. Finally, the water is transported to the spray pipe 107 through each water supply pipe 301, and finally sprayed into the dust removal chamber 105 through the spray nozzle 108 to reduce dust in the air entering the dust removal chamber 105.

[0026] In addition, the spray nozzle 108 in this embodiment adopts an atomizing nozzle to improve the dust suppression effect. At the same time, this embodiment does not limit the number and spacing of the spray pipes 107 in the dust removal chamber 105, as long as it meets the actual application requirements. Similarly, the number and spacing of the spray nozzles 108 on each spray pipe 107 are not limited, as long as they meet the actual application requirements.

[0027] As one implementation method of this embodiment, please refer to Figures 4-7 The bottom of the drain outlet 106 is provided with a guide plate 4, which is fixed to the drain outlet 106 by a support rod 401. The side of the guide plate 4 facing the drain outlet 106 has a structure that is high in the middle and low at the edge. The edge of the guide plate 4 and the drain outlet 106 form a channel 402 for drainage. It can be explained that when the sewage sprayed in the dust removal chamber 105 is discharged from the drain outlet 106, it can flow along the channel 402 on the guide plate 4 to the drain chamber 703, so as to buffer the sewage and ensure that the sewage flows stably to the collection cylinder 5.

[0028] Please refer to Figures 4-6 as well as Figure 9 The first sealing assembly includes a first sealing end 803 embedded in the first sewage port 804. The first sealing assembly also includes a first lifting mechanism, which is used to drive the first sealing end 803 to rise and fall at the axial end of the first sewage port 804. It can be explained that when the first sewage port 804 needs to be closed, the first lifting mechanism adjusts the first sealing end 803 to be embedded in the first sewage port 804, and the outer edge of the first sealing end 803 fits with the inner wall of the first sewage port 804 to achieve a sealed state for the first sewage port 804. When the first sewage port 804 needs to be opened, the first lifting mechanism adjusts the first sealing end 803 to rise so that the sewage in the sewage collection cylinder 5 can be discharged along the gap between the first sealing end 803 and the first sewage port 804. The second sealing assembly includes a second sealing end 801 embedded in the second sewage port 808. The second sealing assembly also includes a second lifting mechanism, which is used to drive the second sealing end 801 to rise and fall at the axial end of the second sewage port 808. It can be explained that when the second sealing end 801 needs to be closed, the second lifting mechanism adjusts the second sealing end 801 to be embedded in the second sewage port 808, and the outer edge of the second sealing end 801 fits with the inner wall of the second sewage port 808 to achieve a sealed state for the second sewage port 808. When the second sewage port 808 needs to be opened, the second sealing end 801 is raised by the second lifting mechanism so that the sewage in the flocculation cylinder 6 can be discharged along the gap between the second sealing end 801 and the second sealing end 801. In this embodiment, the sludge collection cylinder 5 is fixed to the bottom of the support rod 401 by a connecting frame. The first lifting mechanism includes a first lifting rod 8 fixed to the first sealing end 803. The end of the first lifting rod 8 away from the first sealing end 803 is slidably inserted into the first limiting end 607 fixedly arranged at the axial end of the cylinder opening of the sludge collection cylinder 5. The first limiting end 607 is fixed to the cylinder opening of the sludge collection cylinder 5 by a connecting rod. It can be noted that in this embodiment, when adjusting the lifting of the first sealing end 803, the first sealing end 803 can synchronously drive the first lifting rod 8 to slide in the first limiting end 607. The first limiting end 607 can play the role of guiding and limiting the first lifting rod 8 to ensure the stability of the lifting of the first lifting rod 8.

[0029] As a further embodiment, the second lifting mechanism includes a second lifting rod 807 fixed to the second sealing end 801. One end of the second lifting rod 807 away from the second sealing end 801 is slidably inserted into a second limiting end 806 fixed to the central end of the flocculation cylinder 6. The second limiting end 806 is fixed to the opening of the flocculation cylinder 6 via a connecting rod. The bottom of the second drain port 808 is also circumferentially provided with several sets of protrusions 802, each protrusion 802 extending towards the central end of the second drain port 808. A top rod 705 is fixedly provided at the bottom of the flocculation cylinder 6, the outer diameter of which is smaller than the inner diameter of the second drain port 808. The second lifting mechanism also includes a lifting assembly for driving the flocculation cylinder 6 to rise and fall along the central end. It can be noted that, initially, the second sealing end 801... When the plug end 801 is embedded in the second sewage port 808, the protrusions 802 provided in the second sewage port 808 can support the second plug end 801 to prevent it from detaching from the second sewage port 808, thus acting as a limit. When the second sewage port 808 needs to be opened, the lifting assembly drives the flocculation cylinder 6 to descend, and the top rod 705 can be embedded in the second sewage port 808 and push the second plug end 801 into the flocculation cylinder 6, so that the second plug end 801 can detach from the second sewage port 808, allowing the sewage in the flocculation cylinder 6 to be discharged along the second sewage port 808. Correspondingly, when the lifting assembly drives the flocculation cylinder 6 to rise, the second plug end 801 automatically re-seals the second sewage port 808 under the action of gravity.

[0030] It should also be noted that, in order to drive the first sealing end 803 to rise and fall, in this embodiment, a push rod 805 is fixedly arranged at the end of the first sealing end 803 away from the first lifting rod 8. It can be explained that when the lifting assembly drives the flocculation cylinder 6 to rise, the second lifting rod 807 can push the first sealing end 803 embedded in the first sewage port 804 to rise by abutting against the push rod 805, thereby causing the first sealing end 803 to disengage from the first sewage port 804, and the sewage in the collection cylinder 5 can be discharged along the gap between the first sewage port 804 and the first sealing end 803. Correspondingly, when the lifting assembly drives the flocculation cylinder 6 to fall, under the action of gravity, the first sealing end 803 automatically achieves the effect of sealing the first sewage port 804.

[0031] Based on this, this embodiment achieves the effect of automatically adjusting the first sewage discharge port 804 and the second sewage discharge port 808 to automatically and alternately close and open during the process of driving the flocculation cylinder 6 to rise and fall by setting up a lifting component. This embodiment does not require setting up other servo devices for adjustment, which not only reduces costs but also ensures synchronization and stability.

[0032] In order to replenish the flocculant in the flocculation cylinder 6 in a timely manner, in this embodiment, please refer to... Figure 7 The sewage tank 2 is equipped with a flocculant delivery pipe 203. The outlet end of the flocculant delivery pipe 203 extends to the top of the flocculation cylinder 6, and the other end passes through the sewage tank 2 and connects to the flocculant delivery equipment on the outside. Specifically, this embodiment does not limit the specific material of the flocculant, as long as it meets the actual application requirements. When it is necessary to add flocculant to the flocculation cylinder 6, the flocculant can be delivered to the flocculation cylinder 6 through the flocculant delivery pipe 203 by the flocculant delivery equipment, so as to achieve the effect of automatic replenishment.

[0033] After the flocculant is added to the flocculation cylinder 6, to ensure the flocculation effect and efficiency, please refer to... Figure 9 The flocculation cylinder 6 is rotatably arranged in the annular frame 601, which is fixed to one side of the positioning plate 605. Annular teeth 602 are fixedly arranged on the cylinder wall of the flocculation cylinder 6, and a servo motor 604 is fixedly arranged on the positioning plate 605. A gear 603 that meshes with the annular teeth 602 is fixedly arranged on the drive end of the servo motor 604. It can be explained that in this embodiment, after the flocculant is added to the flocculation cylinder 6, the servo motor 604 drives the gear 603 to rotate. The gear 603, by meshing with the annular teeth 602, drives the flocculation cylinder 6 to rotate, thereby achieving the effect of mixing the flocculation cylinder 6 with the wastewater and ensuring flocculation efficiency and effect.

[0034] In order to drive the flocculation cylinder 6 to automatically rise and fall, in this embodiment, a servo cylinder 606 is fixedly installed inside the sewage tank 2, and the driving end of the servo cylinder 606 is fixedly connected to the positioning plate 605. It can be explained that when adjusting the rise and fall of the flocculation cylinder 6, the servo cylinder 606 is activated, and the servo cylinder 606 can drive the ring frame 601 and the flocculation cylinder 6 to rise and fall through the positioning plate 605.

[0035] It should also be noted that the upper surface of each sealing end and limiting end in this embodiment is set as an arc-shaped structure, which not only ensures the sewage flow rate, but also avoids cleaning dead corners.

[0036] A method for operating a dust suppression device used in tunnel construction includes the following steps: Please see Figures 1-5 S1. Move the dust collection box 1 to the dust collection position in the tunnel and start the fan 104. The fan 104 generates negative pressure in the dust collection box 1 through the exhaust pipe 103 and the exhaust port 101, and then sucks the dust generated in the tunnel construction into the dust collection box 1 through the air inlet 102. S2. Start the spraying mechanism and spray water into the dust removal chamber 105 to spray and reduce dust in the air drawn into the dust removal chamber 105. The treated wastewater can be discharged through the drain outlet 106. S3. After the sewage in the dust removal chamber 105 is discharged through the drain port 106, it falls into the sewage tank 2. After the sludge settles at the bottom of the sewage tank 2, the drain valve 204 can be opened to discharge all the sludge.

[0037] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A dust suppression device for tunnel construction, comprising a dust collection box (1), characterized in that, An air inlet (102) is provided on one side of the dust collection box (1), and an air outlet (101) is provided on the other side. The dust collector (1) is fixedly provided with a partition (109), which is enclosed by the partition (109) and the box wall of the dust collector (1) to form a dust collection chamber (105). A drain port (106) is opened at the bottom of the partition (109). A spraying mechanism is provided in the dust collection chamber (105) to suppress the dust in the air drawn into the dust collection chamber (105). The dust collector (1) is fixedly provided with a sewage discharge box (2) at the bottom. Two sets of baffles (7) are fixedly provided symmetrically inside the sewage discharge box (2). The two baffles (7) enclose a sewage discharge chamber (703). The sewage discharge port (106) is provided with a sewage collection cylinder (5) at the bottom. The sewage collection cylinder (5) is provided with a first sewage discharge port (804) at the bottom. The first sewage discharge port (804) is provided with a first sealing component. The sewage collection cylinder (5) is provided with a flocculation cylinder (6) at the bottom. The flocculation cylinder (6) is provided with a second sewage discharge port (808) at the bottom. The second sewage discharge port (808) is provided with a second sealing component.

2. The dust suppression and prevention equipment for tunnel construction as described in claim 1, characterized in that, The bottom of the sewage tank (2) is provided with a sludge settling chamber (704), and a sewage valve (204) is provided at the bottom of the sludge settling chamber (704). Among them, the side of the baffle (7) facing away from each other is enclosed with the wall of the sewage box (2) to form a circulation cavity (701), and the bottom of the baffle (7) is provided with a filter screen (702) for filtering sludge particles.

3. The dust suppression and prevention equipment for tunnel construction as described in claim 2, characterized in that, The spraying mechanism includes spray pipes (107) arranged in an array in the dust removal chamber (105), and several sets of spray heads (108) are evenly arranged at the bottom of the spray pipes (107). Each of the spray pipes (107) is connected to a water delivery assembly for delivering water to each spray pipe (107).

4. The dust suppression and prevention equipment for tunnel construction as described in claim 3, characterized in that, The water supply assembly includes a water tank (3) fixed to the outside of the dust collector (1). Each spray pipe (107) is connected to the water tank (3) through a water supply pipe (301). One end of the water tank (3) away from the dust collector (1) is connected to a water pump (303) through an inlet pipe (302). The other end of the water pump (303) is connected to the main water pumping pipe (202). The two circulation chambers (701) are connected to the branch water pumping pipes (201) respectively. The other end of the branch water pumping pipes (201) is connected to the main water pumping pipe (202).

5. A dust suppression device for tunnel construction as described in claim 1, characterized in that, The bottom of the drain outlet (106) is provided with a guide plate (4). The guide plate (4) is fixed to the drain outlet (106) by a support rod (401). The side of the guide plate (4) facing the drain outlet (106) has a structure that is high in the middle and low at the edge. The edge of the guide plate (4) and the drain outlet (106) form a channel (402) for drainage.

6. A dust suppression device for tunnel construction as described in claim 5, characterized in that, The first sealing assembly includes a first plug end (803) embedded in the first drain port (804), and the first sealing assembly also includes a first lifting mechanism for driving the first plug end (803) to rise and fall at the axial end of the first drain port (804).

7. A dust suppression device for tunnel construction as described in claim 6, characterized in that, The second sealing assembly includes a second sealing end (801) embedded in the second drain port (808), and the second sealing assembly also includes a second lifting mechanism for driving the second sealing end (801) to rise and fall at the axial end of the second drain port (808).

8. A dust suppression device for tunnel construction as described in claim 7, characterized in that, The sludge collection cylinder (5) is fixed to the bottom of the support rod (401) by a connecting frame. The first lifting mechanism includes a first lifting rod (8) fixed on the first sealing end (803). The end of the first lifting rod (8) away from the first sealing end (803) is slidably inserted into the first limiting end (607) fixed at the cylinder opening axis of the sludge collection cylinder (5). The first limiting end (607) is fixed at the cylinder opening of the sludge collection cylinder (5) by a connecting rod. Among them, a push rod (805) is fixedly arranged at the end of the first sealing end (803) away from the first lifting rod (8).

9. A dust suppression device for tunnel construction as described in claim 8, characterized in that, The second lifting mechanism includes a second lifting rod (807) fixed on the second sealing end (801). The end of the second lifting rod (807) away from the second sealing end (801) is slidably inserted into a second limiting end (806) fixed at the shaft end of the flocculation cylinder (6). The second limiting end (806) is fixed at the cylinder opening of the flocculation cylinder (6) by a connecting rod. Among them, the bottom of the second sewage discharge port (808) is also provided with several sets of protrusions (802) in a circumferential direction. Each protrusion (802) extends toward the axial end of the second sewage discharge port (808). The bottom of the flocculation cylinder (6) is provided with a top rod (705). The outer diameter of the top rod (705) is smaller than the inner diameter of the second sewage discharge port (808). The second lifting mechanism also includes a lifting component, which is used to drive the flocculation cylinder (6) to rise and fall along the axial end.

10. A dust suppression device for tunnel construction as described in claim 9, characterized in that, The flocculation cylinder (6) is rotatably arranged in the annular frame (601), the annular frame (601) is fixed to one side of the positioning plate (605), the annular teeth (602) are fixedly arranged on the cylinder wall of the flocculation cylinder (6), the servo motor (604) is fixedly arranged on the positioning plate (605), and the drive end of the servo motor (604) is fixedly arranged with a gear (603) that meshes with the annular teeth (602). The sewage tank (2) is equipped with a servo electric cylinder (606), and the drive end of the servo electric cylinder (606) is fixedly connected to the positioning plate (605).

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