Tunnel dust removal device

Abstract

The utility model relates to the technical field of tunnel dust removal, in particular to a tunnel dust removal device which comprises a purification box body, an exhaust pipe is fixedly connected to the top of the right side of the purification box body, a discharge pipe is fixedly connected to the bottom of the purification box body, and a high-pressure water mist nozzle and an electrostatic atomization spray head are fixedly connected to the top side in the purification box body. A screening assembly is arranged at the bottom of the purification box body, an air suction pipe is fixedly connected to the lower half part of the left side of the purification box body, a pretreatment assembly is arranged in the air suction pipe, and the pretreatment assembly comprises a filter plate fixedly connected to the interior of the air suction pipe. According to the utility model, efficient pre-purification is constructed through the pre-treatment assembly, the cleanness and stability of inlet air are guaranteed, the overall dust removal efficiency and the operation continuity are greatly improved, large-particle flocs and sewage are separated through the screening assembly, a screening plate is pulled out to facilitate dust cleaning, the sewage is independently discharged through a discharge pipe, and the subsequent treatment difficulty is reduced.

Description

Technical Field

[0001] This utility model relates to the field of tunnel dust removal technology, specifically a tunnel dust removal device. Background Technology

[0002] The construction and operation of tunnels generate a large amount of dust, which not only affects the health of construction workers but also reduces construction efficiency and affects the normal operation of equipment. To solve the tunnel dust problem, various tunnel dust removal devices have emerged on the market. These devices typically consist of a suction component, a filtration structure, and a dust removal component. The suction component is responsible for drawing dust-laden air into the device, the filtration structure initially intercepts large dust particles, and the dust removal component adsorbs and settles fine dust particles through atomization and other methods.

[0003] Existing technologies have disclosed some dust removal devices for tunnel operations, but they often have various shortcomings: for example, the air containing dust and impurities does not undergo any pretreatment process before entering the main body through the suction pipe, causing large particles of impurities in the air to directly enter the subsequent dust removal stage, ultimately affecting the overall dust removal effect of the device. In view of this, we propose a tunnel dust removal device. Utility Model Content

[0004] The purpose of this invention is to provide a tunnel dust removal device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A tunnel dust removal device includes a purification chamber. An exhaust pipe is fixedly connected to the top right side of the purification chamber, and a discharge pipe is fixedly connected to the bottom of the purification chamber. A high-pressure fine water mist nozzle and an electrostatic atomizing nozzle are fixedly connected to the top side inside the purification chamber. A screening assembly is provided at the bottom of the purification chamber. An air suction pipe is fixedly connected to the lower left half of the purification chamber. A pretreatment assembly is provided inside the air suction pipe. The pretreatment assembly includes a filter plate fixedly connected inside the air suction pipe. A linear actuator is fixedly connected to the top side of the air suction pipe. A second cleaning component is fixedly connected to the telescopic end of the linear actuator. Two first cleaning components are slidably connected inside the second cleaning component. The first and second cleaning components slide in contact with the front side of the filter plate. Two springs are fixedly connected inside the second cleaning component. One end of each spring is fixedly connected to the second cleaning component, and the other end is fixedly connected to each of the two first cleaning components. The maximum width of the second cleaning component plus the two first cleaning components is greater than or equal to the diameter of the filter plate.

[0007] Specifically, pretreatment of dusty air can remove larger particulate impurities, making subsequent processing easier.

[0008] Preferably, the screening assembly includes a screening plate slidably connected to the interior of the purification chamber, a limiting plate fixedly connected to the rear side of the screening plate, a handle fixedly connected to the front side of the screening plate, the limiting plate slidably connected to the interior of the purification chamber, and two locking pins slidably connected to the interior of the front side of the purification chamber, with one end of the locking pin near the screening plate slidably connected to the interior of the screening plate.

[0009] Specifically, the screening component can separate large flocs from wastewater.

[0010] Preferably, each of the first cleaning components has two limiting blocks fixedly connected to its surface, and the limiting blocks are slidably connected inside the second cleaning component; the two ends of the second cleaning component have a constricted structure, so that the width of the port is less than the width of the first cleaning component plus the two limiting blocks.

[0011] Specifically, two springs push the two primary cleaning components to press tightly against the inner wall of the suction pipe, thereby adapting to changes in the width of the filter plate and cleaning the filter plate more thoroughly.

[0012] Preferably, the suction pipe (3) has a dust discharge port located directly below the second cleaning component (204), and a rotating shaft (207) is provided on one side of the dust discharge port. The sealing plate (208) is rotatably connected to the suction pipe (3) through the rotating shaft (207). The shape and size of the sealing plate (208) are the same as those of the dust discharge port.

[0013] Preferably, a torsion spring is fitted on the surface of the rotating shaft, one end of the torsion spring is fixedly connected to the sealing plate, and the other end of the torsion spring is fixedly connected to the suction pipe. A push rod is fixedly connected to the bottom side of the second cleaning component. The push rod is positioned directly above the sealing plate, and the bottom end of the push rod extends to press against and open the sealing plate.

[0014] Specifically, the push rod can move with the second cleaning component, thereby pushing the sealing plate to rotate. After the push rod leaves, the sealing plate returns to its original position under the action of the torsion spring, tightly adhering to the suction pipe to achieve a seal.

[0015] Preferably, a storage box is provided on the surface of the suction pipe, and the storage box is located at the dust discharge port of the suction pipe.

[0016] Specifically, impurities cleaned off the surface of the filter plate can be collected in the storage box.

[0017] Preferably, a push plate is fixedly connected to the surface of the locking pin, and a second spring is sleeved on the surface of the locking pin. The second spring is located on the side of the push plate facing the purification box.

[0018] Specifically, spring two can push the locking pin to move via the push plate.

[0019] Preferably, the top ends of the two locking pins are fixedly connected to a connecting plate, which is slidably connected inside the purification chamber.

[0020] Specifically, the two locking pins can be moved simultaneously by pulling the connecting plate.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. This tunnel dust removal device utilizes pre-treatment components to create a highly efficient pre-purification process. When dust-laden air passes through the suction pipe, the filter plate first intercepts large dust particles, preventing blockage of the atomization adsorption channel. A linear actuator drives the first and second cleaning components to work together for cleaning. Combined with an automated dust removal process, no downtime or disassembly is required, ensuring clean and stable intake air and significantly improving overall dust removal efficiency and operational continuity.

[0023] 2. The tunnel dust removal device is equipped with a screening component, a high-pressure fine water mist nozzle, and an electrostatic atomizing nozzle. Through the synergistic effect of the micron-level water mist generated by the high-pressure fine water mist nozzle and the charged water mist from the electrostatic atomizing nozzle, the dust can be agglomerated into large particle flocs and intercepted on the screening plate by the action of water bridging force and electrostatic attraction. This prevents the large particle flocs from clogging the discharge pipe, thereby achieving the separation of large particle flocs from sewage. The sewage is discharged separately through the discharge pipe, reducing the difficulty of subsequent treatment. 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 purification box structure in this utility model;

[0026] Figure 3 This is a schematic diagram of the suction pipe structure in this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the first cleaning component in this utility model;

[0028] Figure 5 This is a schematic diagram of the locking pin structure in this utility model.

[0029] In the diagram: 1. Purification chamber; 2. Pretreatment assembly; 201. Linear actuator; 202. Storage box; 203. First cleaning component; 204. Second cleaning component; 205. Filter plate; 206. Torsion spring; 207. Rotating shaft; 208. Sealing plate; 209. Push rod; 210. Limiting block; 211. Spring one; 3. Suction pipe; 4. Screening assembly; 401. Handle; 402. Push plate; 403. Screening plate; 404. Limiting plate; 405. Connecting plate; 406. Locking pin; 407. Spring two; 5. High-pressure fine water mist nozzle; 6. Discharge pipe; 7. Exhaust pipe; 8. Electrostatic atomizing nozzle. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0032] It should be noted that the dimensions and shapes of the components in the accompanying drawings are primarily for illustrating technical features and do not represent actual physical dimensions or shapes. When a component is referred to as "fixed to," "placed," "equipped with," "provided with," "arranged on," or "connected to" another component, it may be directly on the other component or may have an intervening component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or may have an intervening component.

[0033] Please see Figures 1-5 As shown, this utility model provides a technical solution:

[0034] A tunnel dust removal device includes a purification chamber 1, which serves as the core dust removal space of the device. The purification chamber 1 provides a closed and stable operating environment for subsequent core dust removal processes such as water mist adsorption of dust, separation of large particle flocs and wastewater. It is the main load-bearing component of the overall dust removal process. An air suction pipe 3 is fixedly connected to the lower left side of the purification chamber 1, and an exhaust pipe 7 is fixedly connected to the top right side. The purified air is discharged through the exhaust pipe 7. A discharge pipe 6 is fixedly connected to the bottom of the purification chamber 1, through which the separated wastewater is discharged. High-pressure fine water mist nozzles 5 and electrostatic atomizing nozzles 8 are fixedly connected to the top inside the purification chamber 1. The high-pressure fine water mist nozzles 5 spray fine water mist to adsorb dust, while the electrostatic atomizing nozzles 8 charge the water mist. Utilizing the principle of electrostatic adsorption, the adsorption effect on small-diameter dust particles is significantly enhanced, improving the thoroughness of dust removal. A screening component 4 is installed at the bottom of the purification chamber 1, used to separate large particle flocs from wastewater. By placing the suction pipe 3 on the lower left side of the purification chamber 1 and the exhaust pipe 7 on the top right side of the purification chamber 1, the air flows upward, which is more conducive to dust settling and air purification.

[0035] In this embodiment, a suction pipe 3 is fixedly connected to the lower left half of the purification chamber 1. The suction pipe 3 is the channel for dusty air to enter the device, which can guide the dusty air in the tunnel into the device for purification. A pretreatment component 2 is provided inside the suction pipe 3. The pretreatment component 2 includes a filter plate 205 fixedly connected inside the suction pipe 3. The filter plate 205 can initially intercept large dust particles. A linear actuator 201 is fixedly connected to the top side of the suction pipe 3. A second cleaning component 204 is fixedly connected to the telescopic end of the linear actuator 201. The linear actuator 201 drives the second cleaning component 204 to move up and down. The second cleaning component 204 has two first cleaning components 203 slidably connected inside. The first cleaning components 203 and the second cleaning component 204 slide in contact with the front side of the filter plate 205, working together to clean the dust on the surface of the filter plate 205. The second cleaning component 204 also has two springs 211 fixedly connected inside. One end of each spring 211 is fixedly connected to the second cleaning component 204, and the other end is fixedly connected to each of the two first cleaning components 203. The maximum width of the second cleaning component 204 plus the two first cleaning components 203 is greater than or equal to the diameter of the filter plate 205. Preferably, the length of the second cleaning component 204 is 3 / 5 of the diameter of the filter plate 205 or the inner diameter of the suction pipe 3, the length of the first cleaning component 203 is slightly greater than 1 / 5 of the diameter of the filter plate 205, and the maximum extension length of the first cleaning component 203 is approximately 1 / 5 of the diameter of the filter plate 205. With this configuration, as the second cleaning component 204 moves up and down with the linear actuator 201, the first cleaning component 203 can extend outward or retract inward according to the curvature of the inner wall of the suction pipe 3. This ensures that within the range of motion of the linear actuator 201, the second cleaning component 204 and the first cleaning component 203 can always cover the entire width of the filter plate 205, thereby enabling the first cleaning component 203 and the second cleaning component 204 to effectively scrape away dust from the surface of the filter plate 205. Initially, the linear actuator 201, the second cleaning component 204, and the first cleaning component 203 are all located on the top side of the suction pipe 3. The first cleaning component 203 and the second cleaning component 204 are specifically components capable of cleaning flat surfaces, such as scrapers or brushes.

[0036] In this embodiment, two limiting blocks 210 are fixedly connected to the surface of the first cleaning component 203, and the limiting blocks 210 are slidably connected inside the second cleaning component 204; the two ends of the second cleaning component 204 are narrowed structures, so that the width of the port is less than the width of the first cleaning component 203 plus the width of the two limiting blocks 210, to prevent the first cleaning component 203 from falling out of the second cleaning component 204.

[0037] In this embodiment, a dust discharge port is provided on the suction pipe 3 directly below the second cleaning component 204. A rotating shaft 207 is provided on one side of the dust discharge port, and a sealing plate 208 is rotatably connected to the suction pipe 3 via the rotating shaft 207. The shape and size of the sealing plate 208 are the same as those of the dust discharge port. Under normal circumstances, the sealing plate 208 abuts against the dust discharge port, completely sealing the dust discharge port to prevent dust-laden air from leaking out and adversely affecting the dust removal operation. When cleaning the filter plate 205, the sealing plate 208 can be opened to discharge the dust on the filter plate 205.

[0038] In this embodiment, a torsion spring 206 is sleeved on the surface of the rotating shaft 207. One end of the torsion spring 206 is fixedly connected to the sealing plate 208, and the other end is fixedly connected to the suction pipe 3. A push rod 209 is fixedly connected to the bottom side of the second cleaning component 204. The push rod 209 is positioned directly above the sealing plate 208, and its bottom end extends to a position that can press against and open the sealing plate 208. The length of the push rod 209 is greater than 1 / 10 of the diameter of the filter plate 205. Specifically, the length of the push rod 209 can be ultimately determined based on the diameter of the filter plate 205, the wall thickness of the suction pipe 3, and the desired opening angle of the sealing plate 208. During the cleaning of filter plate 205, when the second cleaning component 204 moves down to the bottom, because the length of the push rod 209 is greater than the distance between the lower side of the second cleaning component 204 and the sealing plate 208, the sealing plate 208 is pushed open by the push rod 209, and the dust cleaned by the second cleaning component 204 and the first cleaning component 203 is discharged from the dust outlet. Then, the second cleaning component 204 returns to its initial state under the action of the linear actuator 201, and the sealing plate 208 returns to its original position under the action of the torsion spring 206, tightly adhering to the suction pipe 3, thus resealing the dust outlet, achieving linkage between cleaning and dust removal. If the dust on the surface of filter plate 205 cannot be completely removed in one operation, the linear actuator 201 can be controlled to repeatedly operate until the dust on the surface of filter plate 205 is completely removed. Specifically, the linear actuator 201 can be manually controlled to start, or it can be set to start once at a certain period.

[0039] In this embodiment, a storage box 202 is provided on the surface of the suction pipe 3. The storage box 202 is located at the dust discharge port of the suction pipe 3. The storage box 202 is used to collect the dust that falls from the dust discharge port and is cleaned by the cleaning component, so as to facilitate subsequent unified treatment.

[0040] In this embodiment, the screening component 4 includes a screening plate 403 slidably connected inside the purification chamber 1. The screening plate 403 intercepts and adsorbs large particulate flocs formed by dust. A limiting plate 404 is fixedly connected to the rear side of the screening plate 403. The limiting plate 404 is slidably connected inside the purification chamber 1 to limit the screening plate 403. A handle 401 is fixedly connected to the front side of the screening plate 403 to facilitate pulling the screening plate 403. Two locking pins 406 are slidably connected inside the front side of the purification chamber 1. The end of the locking pin 406 near the screening plate 403 is slidably connected inside the screening plate 403 to fix the screening plate 403 inside the purification chamber 1.

[0041] In this embodiment, a push plate 402 is fixedly connected to the surface of the locking pin 406, and a second spring 407 is sleeved on the surface of the locking pin 406. The second spring 407 is located on the side of the push plate 402 facing the purification box 1. The push plate 402 is the force carrier of the second spring 407, which can transmit the elastic force of the second spring to the locking pin 406. The locking pin 406 is pushed into the screening plate 403 by its own elastic force, thus ensuring the fixing effect of the locking pin.

[0042] In this embodiment, a connecting plate 405 is fixedly connected to the top of the two locking pins 406. The connecting plate 405 is slidably connected inside the purification chamber 1. The connecting plate 405 connects to the top of the two locking pins 406 and slides inside the purification chamber 1, which can realize the synchronous pulling of the two locking pins 406, making it easy to quickly unlock the screening plate.

[0043] In this embodiment of the tunnel dust removal device, dust-laden air enters the device through the suction pipe 3 under the action of the suction equipment. It first passes through the filter plate 205, which initially intercepts large dust particles in the air, thus achieving pretreatment.

[0044] Pre-treated dusty air enters the purification chamber 1. High-pressure fine water mist nozzles 5 and electrostatic atomizing nozzles 8 operate simultaneously, spraying water mist that fully contacts and adsorbs the fine dust particles in the air. Under the influence of water bridging force and electrostatic attraction, the fine dust particles adsorb each other and agglomerate into large flocs, thus increasing their own gravity and accelerating sedimentation. By setting up a screening component 4, most of the large dust flocs are intercepted on the screening plate 403, preventing the accumulation of large flocs from clogging the discharge pipe 6. Wastewater is discharged through the holes in the screening plate 403 via the discharge pipe 6, achieving separation of large flocs from wastewater. The purified air is discharged through the exhaust pipe 7 at the top right, completing the dust removal process.

[0045] When a significant amount of dust accumulates on the surface of the filter plate 205, the linear actuator 201 is activated and moves downwards. The linear actuator 201 drives the second cleaning component 204 downwards, which in turn drives the first cleaning component 203 to move synchronously. A spring 211 allows the first cleaning component 203 to extend outwards or retract inwards according to the curvature of the inner wall of the suction pipe 3, enabling both the first and second cleaning components 203 and 204 to more thoroughly scrape away dust from the surface of the filter plate 205. When the second cleaning component 204 reaches its lowest point, the push rod 209 at its bottom pushes open the sealing plate 208, allowing dust to fall into the collection box 202 through the dust outlet at the bottom of the suction pipe 3. After cleaning, the linear actuator 201 retracts, causing the second cleaning component 204 to move upwards. The sealing plate 208 resets under the action of the torsion spring 206, resealing the dust outlet.

[0046] When a significant amount of dust accumulates on the screening plate 403, pull the connecting plate 405 upwards. The connecting plate 405 causes the two locking pins 406 to move upwards simultaneously. The locking pins 406 compress the second spring 407 and disengage from the screening plate 403, unlocking the screening assembly 4. Hold the handle 401 and pull the screening plate 403 outwards. After removing it, clean the surface dust. Once cleaning is complete, reinsert the screening plate 403 into the purification chamber 1. Release the connecting plate 405, and the second spring 407 pushes the locking pin 406 into the screening plate 403, thus securing the screening plate 403.

[0047] This tunnel dust removal device is mainly used in environments with high air dust content, such as tunnels. To ensure stable operation of the dust removal device in harsh environments, this device abandons the easily clogged precision filter membrane components and adopts a multi-stage physical and electrostatic composite purification method. Although the absolute filtration accuracy per pass is different from that of laboratory-grade filter membranes, it greatly solves the industry pain point of frequent clogging and replacement of filter materials in high dust environments, and achieves long-term maintenance-free stable operation.

[0048] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A tunnel dust removal device, comprising a purification chamber (1), characterized in that: An exhaust pipe (7) is fixedly connected to the top right side of the purification chamber (1), and an exhaust pipe (6) is fixedly connected to the bottom of the purification chamber (1). A high-pressure fine water mist nozzle (5) and an electrostatic atomizing nozzle (8) are fixedly connected to the top side inside the purification chamber (1). A sieving assembly (4) is provided at the bottom of the purification chamber (1). An air suction pipe (3) is fixedly connected to the lower left side of the purification chamber (1). A pretreatment assembly (2) is provided inside the air suction pipe (3). The pretreatment assembly (2) includes a filter plate (205) fixedly connected inside the air suction pipe (3). The top side of the air suction pipe (3) is fixedly connected to the exhaust pipe (6). A linear actuator (201) is fixedly connected to the linear actuator (201), and a second cleaning component (204) is fixedly connected to the telescopic end of the linear actuator (201). Two first cleaning components (203) are slidably connected inside the second cleaning component (204). The first cleaning components (203) and the second cleaning component (204) slide in contact with the front side of the filter plate (205). Two springs (211) are fixedly connected inside the second cleaning component (204). One end of each spring (211) is fixedly connected to the second cleaning component (204), and the other end is fixedly connected to each of the two first cleaning components (203). The maximum width of the second cleaning element (204) plus the two first cleaning elements (203) is greater than or equal to the diameter of the filter plate (205).

2. The tunnel dust removal device according to claim 1, characterized in that: The screening assembly (4) includes a screening plate (403) slidably connected inside the purification chamber (1). A limiting plate (404) is fixedly connected to the rear side of the screening plate (403). A handle (401) is fixedly connected to the front side of the screening plate (403). The limiting plate (404) is slidably connected inside the purification chamber (1). Two locking pins (406) are slidably connected inside the front side of the purification chamber (1). The locking pins (406) are slidably connected to the screening plate (403) at one end near the screening plate (403).

3. The tunnel dust removal device according to claim 1, characterized in that: Two limiting blocks (210) are fixedly connected to the surface of each of the first cleaning components (203), and the limiting blocks (210) are slidably connected inside the second cleaning component (204); the two ends of the second cleaning component (204) are narrowed structures, so that the port width is less than the width of the first cleaning component (203) plus the two limiting blocks (210).

4. A tunnel dust removal device according to claim 1, characterized in that: The suction pipe (3) has a dust discharge port located directly below the second cleaning component (204). A rotating shaft (207) is provided on one side of the dust discharge port. The sealing plate (208) is rotatably connected to the suction pipe (3) through the rotating shaft (207). The shape and size of the sealing plate (208) are the same as those of the dust discharge port.

5. A tunnel dust removal device according to claim 4, characterized in that: A torsion spring (206) is fitted on the surface of the rotating shaft (207). One end of the torsion spring (206) is fixedly connected to the sealing plate (208), and the other end of the torsion spring (206) is fixedly connected to the suction pipe (3). A push rod (209) is fixedly connected to the bottom side of the second cleaning component (204). The push rod (209) is located directly above the sealing plate (208), and the bottom end of the push rod (209) extends to a position that can press against and open the sealing plate (208).

6. A tunnel dust removal device according to claim 4, characterized in that: A storage box (202) is provided on the surface of the suction pipe (3), and the storage box (202) is located at the dust outlet of the suction pipe (3).

7. A tunnel dust removal device according to claim 2, characterized in that: A push plate (402) is fixedly connected to the surface of the locking pin (406), and a second spring (407) is sleeved on the surface of the locking pin (406). The second spring (407) is located on the side of the push plate (402) facing the purification box (1).

8. A tunnel dust removal device according to claim 2, characterized in that: The top ends of the two locking pins (406) are fixedly connected to a connecting plate (405), which is slidably connected inside the purification box (1).

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