Tunnel ventilation device

Abstract

The utility model discloses a tunnel ventilation device, relates to the field of ventilation equipment, and aims to solve the problem that a lifting type cleaning element of an existing filter screen occupies more vertical space, an overturning mechanism is arranged to drive a rotating plate and a telescopic plate to move, and the position of the telescopic plate and a cleaning brush connected to the telescopic plate is changed. The cleaning brush can face the filter screen or the telescopic plate can be withdrawn to the outer side of the ventilation pipeline, the space above the ventilation pipeline can be reduced by switching in an overturning mode, therefore, the clear height of the whole device can be increased, the influence on external vehicles is reduced, meanwhile, the cleaning brush enters meshes of the filter screen in a penetrating mode, the cleaning effect is guaranteed, and the cleaning efficiency is improved. The ventilation effect of the filter screen is improved.

Description

Technical Field

[0001] The utility model relates to the field of ventilation equipment, in particular to a tunnel ventilation device. Background Art

[0002] Tunnels are closed for a long time and lack fresh air and oxygen supply. Ventilation facilities in tunnels can ensure air circulation, provide protection for vehicles and personnel, and eliminate exhaust gas and pollutants generated by vehicles.

[0003] Fans are often used as ventilation facilities in tunnels. When the tunnel is ventilated, the air needs to be filtered. At present, filters are generally used for filtering. However, after the filter is used for a long time, a large amount of attachments are easily attached to the filter, which affects the operating efficiency of the fan. The traditional method of dismantling or cleaning from the bottom is inconvenient to operate. A tunnel ventilation device is disclosed in a Chinese patent application (CN116877174 A), which is provided with a multi-stage filter and a corresponding cleaning brush for the filter. The impurities attached to the filter are cleaned and collected by rolling the cleaning brush to avoid the removal and cleaning of the filter. However, the cleaning brush needs to be lifted vertically during operation, and sufficient activity space needs to be reserved for the driving part of the vertical lifting of the cleaning brush to meet the requirement that the cleaning brush fully covers the cleaning range of the filter in the vertical direction, resulting in a large gap between the fixed outer cylinder and the top of the tunnel to accommodate the telescopic part of the cleaning brush, which occupies the vertical passing space of the tunnel and affects the height limit of the tunnel. Utility Model Content

[0004] The purpose of the utility model is to provide a tunnel ventilation device in response to the defects of the prior art, in which a flipping mechanism is arranged to drive the movement of a rotating plate and a telescopic plate, and to change the position of the telescopic plate and a cleaning brush connected thereto, so that the cleaning brush can be directed toward the filter or the telescopic plate can be withdrawn to the outside of the ventilation duct. Switching in a flipping manner can reduce the encroachment on the space above the ventilation duct, thereby facilitating an increase in the net height of the entire device and reducing the impact on external vehicles. At the same time, the cleaning brush enters the mesh of the filter in a penetrating manner, thereby ensuring a cleaning effect and improving the ventilation effect of the filter.

[0005] In order to achieve the above purpose, the following technical solutions are adopted:

[0006] A tunnel ventilation device, comprising:

[0007] The ventilation assembly comprises a ventilation duct and an exhaust fan installed in the ventilation duct, the axis of the ventilation duct is horizontal and the top end is connected to the mounting plate, and a filter screen is installed at an opening at one axial end of the ventilation duct;

[0008] The dust removal assembly includes a rotating plate and a telescopic plate. The rotating plate is connected to the mounting plate through a flipping mechanism. One end of the telescopic plate slides to cooperate with the rotating plate. A telescopic mechanism is connected between the telescopic plate and the rotating plate. When the rotating plate is driven by the flipping mechanism, the angle between the plane where the telescopic plate is located and the axis of the ventilation duct is changed. A cleaning brush is provided on the side of the telescopic plate facing the filter. When the telescopic plate is driven by the telescopic mechanism, the telescopic plate can move back and forth in the vertical direction of the plane where the telescopic plate is located so that the bristles of the cleaning brush pass through or withdraw from the mesh of the filter.

[0009] Furthermore, the flipping mechanism includes a fixed box and a worm gear mechanism, the worm gear mechanism includes a meshing worm wheel and a worm, the fixed box is fixed to the mounting plate, the worm wheel and the worm are rotatably mounted in the fixed box respectively, one end of the worm wheel passes through the fixed box and is connected to the rotating plate, and the rotating plate rotates around the worm wheel axis under the drive of the worm wheel.

[0010] Furthermore, one end of the worm passes through a fixing box and is connected to a turning drive motor.

[0011] Furthermore, the rotating plate includes a first plate and a second plate connected to each other, the end of the first plate is connected to the end of the second plate to make the rotating plate L-shaped, the flip mechanism connects the first plate, and the telescopic plate and the telescopic mechanism cooperate with the second plate.

[0012] Furthermore, a limiting groove is provided on the rotating plate, and a protrusion extends from the top of the telescopic plate to form an ear plate with a hole, and the ear plate with a hole is slidably matched with the limiting groove to achieve sliding fit between the rotating plate and the telescopic plate.

[0013] Furthermore, the telescopic mechanism includes a cleaning drive motor and a threaded rod, both ends of the threaded rod are respectively rotatably connected to the rotating plate, a nut is connected to the hole of the perforated ear plate, the threaded rod cooperates with the nut to form a screw slider mechanism, the cleaning drive motor is connected to one end of the threaded rod, and the axis of the threaded rod is parallel to the sliding direction of the perforated ear plate along the limit groove.

[0014] Furthermore, a plurality of collecting ports are provided at the bottom of the peripheral wall of the ventilation duct between the exhaust fan and the filter, and a collecting box is provided at the lower end of the collecting port. One side of the collecting box is rotatably connected to the peripheral wall of the ventilation duct, and the other side is provided with a control box to lock or release the collecting box.

[0015] Furthermore, a coaxially distributed annular scraper is provided in the ventilation duct, the outer circumferential surface of the scraper fits into the inner circumferential surface of the ventilation duct, the protrusion on the outer circumferential surface of the scraper slides with the slide groove on the inner wall of the ventilation duct, the slide groove is arranged along the busbar direction of the ventilation duct, the electric push rod connects the ventilation duct and the scraper, and the direction in which the electric push rod drives the scraper to move is parallel to the axis of the ventilation duct.

[0016] Furthermore, the scraper is provided in plurality and each is equipped with an electric push rod. The scraper can be moved to intersect with the collection port to push the impurities into the collection box.

[0017] Furthermore, the control box is provided with a telescopic card rod, and the telescopic card rod can hook and lock the collection box or unlock and release the collection box.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] In order to solve the problem that the lifting cleaning element of the current filter screen occupies more vertical space, the utility model provides a flipping mechanism to drive the rotating plate and the telescopic plate to move, and change the position of the telescopic plate and the cleaning brush connected thereto, so that the cleaning brush can be directed toward the filter screen or the telescopic plate can be evacuated to the outside of the ventilation duct. The switching in a flipping manner can reduce the encroachment on the space above the ventilation duct, thereby facilitating an increase in the net height of the entire device and reducing the impact on external vehicles. At the same time, the cleaning brush enters the mesh of the filter screen in a penetrating manner, thereby ensuring the cleaning effect and improving the ventilation effect of the filter screen.

[0020] The utility model utilizes a worm gear mechanism as an actuator of the flipping mechanism, which can stably transmit the torque of the flipping drive motor. At the same time, after the flipping is completed, the self-locking ability of the worm gear is utilized to keep the position of the rotating plate stable, thereby ensuring the stability before and after the flipping and improving the operation safety.

[0021] In the utility model, in order to improve the convenience of cleaning the inner wall of the ventilation duct and prevent excessive dust inside the ventilation duct from causing blockage of the ventilation duct, the electric push rod can be opened first to drive the scraper to slide back and forth along the outer wall of the slide groove, so as to scrape the dust on the inner wall of the ventilation duct into the collection box through the collection port, and then the pull block is pulled to drive the telescopic card rod to retract through the action of the spring, so that the telescopic card rod and the connecting card rod are not in contact, and then the collection box is pulled out to drive the connecting card rod to slide out of the fixed groove, thereby processing the dust inside the collection box, reducing internal dust accumulation and improving the ventilation effect of the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the tunnel ventilation device in an embodiment of the utility model.

[0023] Figure 2 It is a schematic diagram of the structure after the position of the rotating plate in the embodiment of the utility model is adjusted.

[0024] Figure 3 It is a schematic diagram of the cleaning brush cooperating with the filter screen in the embodiment of the utility model.

[0025] Figure 4 It is a structural schematic diagram of the turning mechanism in the embodiment of the utility model.

[0026] Figure 5 It is a schematic diagram of the scraper cooperating with the ventilation duct in the embodiment of the utility model.

[0027] Figure 6 It is a schematic diagram of the collection box cooperating with the control box in the embodiment of the utility model.

[0028] Explanation of the numbers (in the order of first appearance): 1. Mounting plate; 11. Ventilation duct; 12. Exhaust fan; 13. Filter; 2. Fixing box; 21. Flipping drive motor; 22. Worm; 23. Worm wheel; 24. Rotating plate; 25. Cleaning drive motor; 26. Threaded rod; 27. Telescopic plate; 28. Limiting groove; 29. ​​Cleaning brush; 3. Electric push rod; 31. Scraper; 32. Slide; 33. Collection port; 34. Collection box; 35. Control box; 351. Telescopic lever; 352. Spring; 353. Pull block; 354. Connecting lever; 355. Fixing groove. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0030] Aiming at the problem that it is difficult to clean the filter screen of ventilation equipment in tunnels, a tunnel ventilation device is provided, such as Figure 1 As shown, it includes a ventilation component and a dust removal component, wherein the ventilation component uses a mounting plate 1 as a mounting base, the outer wall of the mounting plate 1 is fixedly connected to a ventilation duct 11, one end of the ventilation duct 11 is provided with an exhaust fan 12, and the other end of the ventilation duct 11 is fixedly connected to a filter 13, which can filter the airflow entering the ventilation duct 11, so that the exhaust fan 12 sucks the filtered airflow into the tunnel. Figure 3 As shown, the dust removal assembly includes a rotating plate 24 and a telescopic plate 27. The rotating plate 24 is connected to the mounting plate 1 through a flip mechanism. The flip mechanism can drive the rotating plate 24 to rotate relative to the mounting plate 1 to adjust the position of the rotating plate 24. One end of the telescopic plate 27 slides with the rotating plate 24, and a telescopic mechanism is connected between the telescopic plate 27 and the rotating plate 24. Figure 1 and Figure 2 As shown, when the rotating plate 24 is driven by the turning mechanism, the telescopic plate 27 turns along with the rotating plate 24 , thereby changing the angle between the plane where the telescopic plate 27 is located and the axis of the ventilation duct 11 .

[0031] A cleaning brush 29 is provided on the side of the telescopic plate 27 facing the filter 13. When the telescopic plate 27 is driven by the telescopic mechanism, the telescopic plate 27 can reciprocate in the vertical direction of the plane where the telescopic plate 27 is located, thereby approaching or moving away from the filter 13, so that the bristles of the cleaning brush 29 pass through or withdraw from the mesh of the filter 13.

[0032] like Figure 3 and Figure 4As shown, the flipping mechanism includes a fixed box 2 and a worm gear mechanism, the worm gear mechanism includes a meshing worm wheel 23 and a worm 22, the fixed box 2 is fixed to the mounting plate 1, the worm wheel 23 and the worm 22 are rotatably mounted in the fixed box 2, one end of the worm wheel 23 passes through the fixed box 2 and is connected to the rotating plate 24, and the rotating plate 24 rotates around the axis of the worm wheel 23 under the drive of the worm wheel 23.

[0033] Specifically, Figure 4 As shown, the outer wall of the mounting plate 1 is fixedly connected to a fixing box 2, the outer wall of the fixing box 2 is fixedly connected to a flipping drive motor 21, the output end of the flipping drive motor 21 is fixedly connected to a worm 22 which is rotatably connected to the inner wall of the fixing box 2, the outer wall of the worm 22 is meshed with a worm wheel 23 which is rotatably connected to the inner wall of the fixing box 2, the rotation center of the worm wheel 23 is fixedly connected to a rotating plate 24 which is rotatably connected to the outer wall of the mounting plate 1 through a connecting shaft, thereby driving the flipping of the rotating plate 24.

[0034] The rotating plate 24 includes a first plate and a second plate connected to each other. The end of the first plate is connected to the end of the second plate to make the rotating plate 24 L-shaped. The turning mechanism connects the first plate, and the telescopic plate 27 and the telescopic mechanism cooperate with the second plate.

[0035] like Figure 3 As shown, the outer wall of the rotating plate 24 is fixedly connected to a cleaning drive motor 25, and the output end of the cleaning drive motor 25 is fixedly connected to a threaded rod 26 rotatably connected to the outer wall of the rotating plate 24, and the outer wall of the threaded rod 26 is threadedly connected to a telescopic plate 27 slidably connected to the outer wall of the rotating plate 24, and the outer wall of the telescopic plate 27 is provided with a cleaning brush 29.

[0036] The rotation center of the rotating plate 24 and the rotation center of the worm wheel 23 are arranged to coincide with each other. The rotating plate 24 forms a rotating structure with the mounting plate 1 through the worm 22 and the worm wheel 23, which is conducive to the rotation of the worm 22 to drive the rotating plate 24 to rotate through the rotation of the worm wheel 23, thereby realizing the control operation of aligning the cleaning brush 29 with the filter screen 13.

[0037] A limiting groove 28 is provided at the connection position between the outer wall of the rotating plate 24 and the telescopic plate 27. A protrusion extends from the top of the telescopic plate 27 to form an ear plate with a hole. The ear plate with a hole slides in cooperation with the limiting groove 28 to achieve sliding cooperation between the rotating plate 24 and the telescopic plate 27. The telescopic mechanism includes a cleaning drive motor 25 and a threaded rod 26. Both ends of the threaded rod 26 are respectively rotatably connected to the rotating plate 24. Nuts are connected to the holes of the ear plate with holes. The threaded rod 26 cooperates with the nuts to form a lead screw slider mechanism. The cleaning drive motor 25 is connected to one end of the threaded rod 26. The axis of the threaded rod 26 is parallel to the sliding direction of the ear plate with holes along the limiting groove 28.

[0038] It should be pointed out that if Figure 1 and Figure 2The figure shows a schematic diagram of the filter 13 and the cleaning brush 29, and the size is enlarged for the convenience of explaining the structure. In actual operation, the filter 13 is a perforated plate or mesh structure, and the filter 13 is provided with holes or meshes distributed in an array, and the distribution density is selected according to the specifications of the main impurities actually filtered, such as holes or meshes of φ10mm, φ12mm, etc., and the spacing between adjacent holes or meshes is 2mm, 3mm, etc. The bristles of the cleaning brush 29 are made of steel wire, and the distribution position of the bristles is adapted to the filter, so that during cleaning, each hole or mesh has bristles passing through it to push the impurities in the hole or mesh out.

[0039] A plurality of collecting ports are provided at the bottom of the outer peripheral wall of the ventilation duct 11 between the exhaust fan 12 and the filter 13, and a collecting box 34 is matched at the lower end of the collecting port. One side of the collecting box 34 is rotatably connected to the outer peripheral wall of the ventilation duct 11, and the other side is matched with a control box 35 to lock or release the collecting box 34; a coaxially distributed annular scraper 31 is provided in the ventilation duct 11, and the outer circumferential surface of the scraper 31 fits the inner circumferential surface of the ventilation duct 11, and the protrusion on the outer circumferential surface of the scraper 31 slides with the slide groove 32 on the inner wall of the ventilation duct 11, and the slide groove 32 is arranged along the busbar direction of the ventilation duct 11, and the electric push rod 3 connects the ventilation duct 11 and the scraper 31, and the direction in which the electric push rod 3 drives the scraper 31 to move is parallel to the axis of the ventilation duct 11.

[0040] There are multiple scrapers 31, each of which is matched with an electric push rod 3. The scrapers 31 can move to intersect with the collection port to push the impurities into the collection box 34;

[0041] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the outer wall of the filter screen 13 is fixedly connected to the electric push rod 3, the output end of the electric push rod 3 is fixedly connected to the scraper 31 which is slidably connected to the inner wall of the ventilation duct 11, the bottom of the ventilation duct 11 is detachably connected to the collecting box 34, and the outer wall of the ventilation duct 11 is fixedly connected to the control box 35.

[0042] The outer wall of the control box 35 is telescopically connected to a telescopic card rod 351, and the outer wall of the telescopic card rod 351 is sleeved with a spring 352 fixedly connected to the outer wall of the control box 35, one end of the telescopic card rod 351 is fixedly connected to a pull block 353 fixedly connected to one end of the spring 352, and the outer wall of the collection box 34 is fixedly connected to a connecting card rod 354 slidably connected to the outer wall of the control box 35.

[0043] The scraper 31 is provided to improve the convenience of cleaning the inner wall of the ventilation duct 11, and prevent the ventilation duct 11 from being blocked by excessive dust inside the ventilation duct 11. When the electric push rod 3 is turned on, it can drive the scraper 31 to slide back and forth along the outer wall of the slide groove 32, pushing the dust on the inner wall of the ventilation duct 11 into the collection box 34 through the collection port 33.

[0044] When cleaning the collection box 34, pull the pull block 353 to drive the telescopic card rod 351 to extend and retract through the action of the spring 352, so that the telescopic card rod 351 is not in contact with the connecting card rod 354, and then pull out the collection box 34 to drive the connecting card rod 354 to slide out of the fixed groove 355, and the collection box 34 can be rotated to open, thereby opening the collection port 33, and dumping the dust collected in the collection box 34, thereby improving the ventilation effect of the tunnel ventilation device when ventilating the tunnel.

[0045] The outer wall contour of the scraper 31 is adapted to the inner wall contour of the ventilation duct 11. A slide groove 32 is provided at the connection portion between the inner wall of the ventilation duct 11 and the scraper 31. The scraper 31 forms a cleaning structure with the ventilation duct 11 through the electric push rod 3 and the slide groove 32. The drive of the electric push rod 3 drives the scraper 31 to slide along the outer wall of the slide groove 32 to clean the inner wall of the ventilation duct 11.

[0046] A collecting port 33 is provided at the connection portion between the outer wall of the ventilation duct 11 and the collecting box 34. Two groups of collecting boxes 34 are provided. The two groups of collecting boxes 34 are spaced apart on the ventilation duct 11. The collecting boxes 34 receive dust scraped off the inner wall of the ventilation duct 11 through the collecting port 33.

[0047] A fixing groove 355 is provided at the connection part between the outer wall of the control box 35 and the connecting rod 354. The connection part between the telescopic rod 351 and the connecting rod 354 is an inclined surface. Two control boxes 35 are provided. The two control boxes 35 are arranged one-to-one with the two collecting boxes 34. The collecting boxes 34 form a disassembly structure with the ventilation duct 11 through the telescopic rod 351 and the connecting rod 354. The connection part between the telescopic rod 351 and the connecting rod 354 is an inclined surface, which can facilitate insertion and locking, and maintain the locked position. When releasing, the telescopic rod 351 is driven by pulling the pull block 353 to release the blocking of the connecting rod 354, and then unlocking is performed.

[0048] The above detailed description of the specific implementation of the utility model is only used as an example, and the utility model is not limited to the specific implementation described above. For those skilled in the art, any equivalent modification or substitution of the utility model is also within the scope of the utility model. Therefore, the equalization, modification, improvement, etc. made without departing from the spirit and principle of the utility model should be included in the scope of the utility model.

Claims

1. A tunnel ventilation device, characterized in that: include: The ventilation assembly comprises a ventilation duct and an exhaust fan installed in the ventilation duct, the axis of the ventilation duct is horizontal and the top end is connected to the mounting plate, and a filter screen is installed at an opening at one axial end of the ventilation duct; The dust removal assembly includes a rotating plate and a telescopic plate. The rotating plate is connected to the mounting plate through a flipping mechanism. One end of the telescopic plate slides to cooperate with the rotating plate. A telescopic mechanism is connected between the telescopic plate and the rotating plate. When the rotating plate is driven by the flipping mechanism, the angle between the plane where the telescopic plate is located and the axis of the ventilation duct is changed. A cleaning brush is provided on the side of the telescopic plate facing the filter. When the telescopic plate is driven by the telescopic mechanism, the telescopic plate can move back and forth in the vertical direction of the plane where the telescopic plate is located so that the bristles of the cleaning brush pass through or withdraw from the mesh of the filter.

2. The tunnel ventilation device according to claim 1, characterized in that: The flipping mechanism includes a fixed box and a worm gear mechanism, the worm gear mechanism includes a meshing worm wheel and a worm, the fixed box is fixed to the mounting plate, the worm wheel and the worm are rotatably mounted in the fixed box respectively, one end of the worm wheel passes through the fixed box and is connected to the rotating plate, and the rotating plate rotates around the worm wheel axis under the drive of the worm wheel.

3. The tunnel ventilation device according to claim 2, characterized in that: One end of the worm passes through the fixing box and is connected with a turning drive motor.

4. The tunnel ventilation device according to claim 1, characterized in that: The rotating plate comprises a first plate and a second plate connected to each other, the end of the first plate is connected to the end of the second plate to make the rotating plate L-shaped, the turning mechanism is connected to the first plate, and the telescopic plate and the telescopic mechanism cooperate with the second plate.

5. The tunnel ventilation device according to claim 1 or 4, characterized in that: The rotating plate is provided with a limiting groove, and a protrusion extends from the top of the telescopic plate to form an ear plate with a hole. The ear plate with a hole is slidably matched with the limiting groove to achieve sliding cooperation between the rotating plate and the telescopic plate.

6. The tunnel ventilation device according to claim 5, characterized in that: The telescopic mechanism includes a cleaning drive motor and a threaded rod, both ends of the threaded rod are rotatably connected to the rotating plate, a nut is connected to the hole of the ear plate with a hole, the threaded rod cooperates with the nut to form a screw slider mechanism, the cleaning drive motor is connected to one end of the threaded rod, and the axis of the threaded rod is parallel to the sliding direction of the ear plate with a hole along the limit groove.

7. The tunnel ventilation device according to claim 1, characterized in that: A plurality of collecting ports are provided at the bottom of the peripheral wall of the ventilation duct between the exhaust fan and the filter screen, and a collecting box is provided at the lower end of the collecting port. One side of the collecting box is rotatably connected to the peripheral wall of the ventilation duct, and the other side is provided with a control box to lock or release the collecting box.

8. The tunnel ventilation device according to claim 7, characterized in that: The ventilation duct is provided with a coaxially distributed annular scraper, the outer circumferential surface of the scraper fits the inner circumferential surface of the ventilation duct, the protrusion on the outer circumferential surface of the scraper slides and cooperates with the slide groove on the inner wall of the ventilation duct, the slide groove is arranged along the generatrix direction of the ventilation duct, the electric push rod connects the ventilation duct and the scraper, and the direction of the electric drive to move the scraper is parallel to the axis of the ventilation duct.

9. The tunnel ventilation device according to claim 8, characterized in that: There are multiple scrapers, each of which is equipped with an electric push rod. The scraper can move to intersect with the collection port to push the impurities into the collection box.

10. The tunnel ventilation device according to claim 9, characterized in that: The control box is provided with a telescopic card rod, and the telescopic card rod can hook and lock the collection box or unlock and release the collection box.

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