Ventilation device for rail transit construction
By designing an air filter and buffer device that allows for easy disassembly, the problem of complex filter disassembly in existing ventilation systems is solved, enabling convenient filter replacement and stable equipment operation, thereby improving ventilation efficiency and equipment lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY BEIJING BUREAU GRP CO LTD HENGSHUI WORKS SECTION
- Filing Date
- 2025-05-22
- Publication Date
- 2026-04-17
AI Technical Summary
The disassembly and replacement process of air filters in existing rail transit ventilation systems is complex, leading to inconvenient maintenance, filter clogging, reduced ventilation efficiency, shortened equipment lifespan, and increased system maintenance costs.
The air filter element can be easily disassembled by pressing the pressing block to compress the spring and pulling the lever to move the movable block to press the reset spring out of the connecting block. The buffer device absorbs vibration and reduces noise to ensure stable operation of the device.
It enables convenient disassembly and cleaning of air filters, prevents clogging, extends equipment life, reduces noise, maintains continuous and stable ventilation, and improves maintenance efficiency and equipment operation.
Smart Images
Figure CN224136013U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ventilation technology for subway construction, specifically a ventilation device for rail transit construction. Background Technology
[0002] Subways are high-speed, high-capacity, electrically powered rail transit systems built in cities. Trains run on fully enclosed track bridges, and lines located in the city center are mostly located in underground tunnels. During the construction of subways, it is necessary to maintain good ventilation in the construction passages. Therefore, personnel working underground need to use ventilation equipment to transport fresh air from the surface to the underground.
[0003] In existing technologies, the disassembly and replacement of air filters is often complex and inconvenient, causing numerous inconveniences for maintenance work. Traditional ventilation device designs typically require the use of special tools or multiple steps to disassemble the filter. For example, multiple screws or clips need to be removed first, and then tools such as pry bars are used to take the filter out of the ventilation device. This disassembly method is not only time-consuming and labor-intensive, but also easily damages the filter or other parts of the ventilation device during the operation. In addition, due to the inconvenience of filter disassembly, cleaning and replacement work are often delayed, leading to filter blockage, reduced ventilation efficiency, shortened equipment life, and increased system maintenance costs. The disassembly and replacement of the filter is not simple and quick enough, which limits the maintenance efficiency and effectiveness of the ventilation device. Summary of the Invention
[0004] The purpose of this utility model is to provide a ventilation device for rail transit construction to solve the problems mentioned in the background art.
[0005] By adopting the above technical solution, it is possible to easily disassemble the air filter.
[0006] Compared with the prior art, the beneficial effects of this utility model are as follows: By pressing the pressing block to compress the spring, and pulling the pull rod to move the movable block to compress the reset spring out of the connecting block, the air filter element can be removed, which facilitates the removal of the filter element, makes it easy to clean and replace, prevents clogging, and extends the service life of the equipment. When the device is running, the vibration causes the filter box and air inlet pipe to move the mounting plate down. The mounting plate drives the second movable support rod to rotate, causing the moving block to slide. The first movable support rod rotates synchronously, and the slider slides along the guide rod to compress the buffer spring, absorbing the vibration, effectively buffering the equipment, reducing noise, maintaining stable operation, and ensuring continuous ventilation. Attached Figure Description
[0007] Figure 1 This is a front view of a ventilation device for rail transit construction proposed in this utility model;
[0008] Figure 2This is a cross-sectional view of the base of a ventilation device for rail transit construction proposed in this utility model;
[0009] Figure 3 This is a schematic diagram of the internal structure of the filter box of a ventilation device for rail transit construction proposed in this utility model;
[0010] Figure 4 for Figure 2 Enlarged view of point A in the middle;
[0011] Figure 5 for Figure 3 Enlarged view of section B in the middle.
[0012] In the diagram: 1. Mounting plate; 2. Positioning plate; 3. Damper; 4. Fixing plate; 5. Base; 6. Movable support rod one; 7. Movable support rod two; 8. Guide rod; 9. Moving block; 10. Sliding block; 11. Buffer spring; 12. Filter box; 13. Air inlet pipe; 14. Fixing frame; 15. Motor; 16. Fan blade; 17. Fixing frame; 18. Air filter element; 19. Connecting block; 20. Connecting plate; 21. Fixing pipe; 22. Pull rod; 23. Return spring; 24. Movable block; 25. Compression spring; 26. Pressing block. Detailed Implementation
[0013] 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.
[0014] Please see Figure 1 , Figure 3 and Figure 5This utility model provides a technical solution: a ventilation device for rail transit construction, including a mounting plate 1 and a base 5. A filter box 12 is fixedly connected to the upper part of the mounting plate 1, and an air inlet pipe 13 is fixedly connected to the right side of the filter box 12. A fan blade 16 is rotatably connected inside the air inlet pipe 13. A fixing frame 17 is fixedly connected inside the filter box 12, and an air filter element 18 is slidably connected inside the fixing frame 17. Connecting plates 20 are fixedly connected to both sides of the front part of the filter box 12, and connecting blocks 19 are fixedly connected to both sides of the front part of the air filter element 18. Fixing pipes 21 are fixedly connected to the left side of both connecting plates 20, and pull rods 22 are slidably connected inside both fixing pipes 21. Fixing components are fixedly connected to the right side of both pull rods 22. The fixing components are used to fix the connecting blocks 19. A return spring 23 is sleeved on the outside of both pull rods 22, and both pull rods 22 are slidably connected to the connecting blocks 19. Inside the connecting plate 20, the fixing components include movable blocks 24 and pressing blocks 26. Both movable blocks 24 are fixedly connected to the right side of the two pull rods 22. Both pressing blocks 26 are slidably connected inside the movable blocks 24. One end of the compression spring 25 is fixedly connected inside the two movable blocks 24. The other end of the two compression springs 25 is fixedly connected to the bottom of the pressing block 26. Both movable blocks 24 are slidably connected inside the connecting block 19. Both pressing blocks 26 are slidably connected inside the connecting block 19. One end of the two return springs 23 is fixedly connected to the right side of the connecting plate 20. The other end of the two return springs 23 is fixedly connected to the left side of the movable blocks 24. A fixing frame 14 is fixedly connected inside the air inlet pipe 13. A motor 15 is fixedly connected inside the fixing frame 14. A fan blade 16 is fixedly connected to the output end of the motor 15. A protective net is fixedly connected to the left side of the filter box 12.
[0015] The motor 15 is started, and its output drives the fan blades 16 to rotate. As the fan blades 16 rotate, outside air is drawn in and transported into the tunnel through the filter box 12 and the air inlet pipe 13. During this process, the air filter element 18 finely filters the intake air, effectively removing harmful substances and ensuring air quality. At the same time, the protective net design provides additional protection for the device, preventing mosquitoes and other debris from entering the filter box 12 and the air inlet pipe 13 and then into the tunnel. With prolonged use, the air filter element 18 will need to be cleaned or replaced. At this time, the operator first presses down on the two pressing blocks 26, causing them to slide into the movable block 24 and applying pressure to the compression spring 25. Next, the operator pulls the two levers 22. Pull rod 22 slides inside fixed tube 21, driving movable block 24 to move. During the movement of movable block 24, return spring 23 is compressed and deformed. Return spring 23 plays a role in restoration and fixation in disassembly mechanism. When movable block 24 and pressing block 26 are squeezed, return spring 23 helps them return to their original position. Under the action of return spring 23, movable block 24 moves pressing block 26 out of connecting block 19, thereby releasing the fixation of connecting block 19. At this time, the operator can easily pull connecting block 19, driving air filter element 18 to slide inside fixed frame 17, thereby conveniently removing air filter element 18. Fixed frame 17 is used to support and fix air filter element 18, ensuring that the filter element is kept in the correct position during normal operation.
[0016] Please see Figure 1 , Figure 2 and Figure 4 The base 5 has guide rods 8 fixedly connected to both sides inside. Slider 10 is slidably connected to both sides outside the two guide rods 8. Movable blocks 9 are fixedly connected to the opposite side of the multiple sliders 10. Movable support rod 1 and movable support rod 2 are rotatably connected to one end of movable support rod 6 and movable support rod 2 on both sides outside the two movable blocks 9. The other end of movable support rod 1 is rotatably connected to the upper part of the base 5. The other end of movable support rod 2 is rotatably connected to the bottom of the mounting plate 1. Buffer springs 11 are sleeved on both sides outside the two guide rods 8. One end of the multiple buffer springs 11 is fixedly connected to the inside of the base 5. The other end of the multiple buffer springs 11 is fixedly connected to the side of the multiple sliders 10 that are far apart. Positioning plates 2 are fixedly connected to both sides outside the mounting plate 1. Fixing plates 4 are fixedly connected to both sides outside the base 5. Dampers 3 are fixedly connected to the upper part of the two fixing plates 4. The two positioning plates 2 are fixedly connected to the upper part of the two dampers 3.
[0017] During the operation of the device, some vibration is inevitable. This vibration causes the mounting plate 1, which connects the filter box 12 and the air inlet pipe 13, to move downwards. As the mounting plate 1 moves, the positioning plate 2 moves accordingly, applying pressure to the damper 3. The damper 3 is a shock absorption device that absorbs and reduces the energy caused by vibration, thereby reducing the vibration and noise of the system. At the same time, the mounting plate 1 squeezes the movable support rod 7, causing the movable support rod 7 to rotate. This rotation further drives the movement of the moving block 9. As the moving block 9 moves, it also causes the movable support rod 6 to rotate. The movement of the moving block 9 also causes the slider 10 to slide along the outer surface of the guide rod 8. The guide rod 8 provides a sliding track for the slider 10, ensuring that the slider 10 moves on the correct path, playing a stabilizing and guiding role. The sliding of the slider 10 will squeeze the buffer spring 11, causing the buffer spring 11 to be compressed. The compression process of the buffer spring 11 effectively absorbs the vibration generated during the operation of the equipment, playing a key buffering role. The buffer spring 11 absorbs and stores vibration energy through compression, reducing the vibration and noise transmitted to the entire ventilation device.
Claims
1. A ventilation device for rail transit construction, comprising a mounting plate (1) and a base (5), characterized in that: A filter box (12) is fixedly connected to the upper part of the mounting plate (1). An air inlet pipe (13) is fixedly connected to the right side of the filter box (12). A fan blade (16) is rotatably connected inside the air inlet pipe (13). A fixed frame (17) is fixedly connected inside the filter box (12). An air filter element (18) is slidably connected inside the fixed frame (17). A connecting plate (20) is fixedly connected to both sides of the front part of the filter box (12). A connecting block (19) is fixedly connected to both sides of the front part of the air filter element (18). A fixed pipe (21) is fixedly connected to the left side of both connecting plates (20). A pull rod (22) is slidably connected inside the two fixed pipes (21). A fixing component is fixedly connected to the right side of both pull rods (22). The fixing component is used to fix the connecting block (19). A return spring (23) is sleeved on the outside of both pull rods (22). Both pull rods (22) are slidably connected inside the connecting plate (20).
2. The ventilation device for rail transit construction according to claim 1, characterized in that: Guide rods (8) are fixedly connected to both sides of the base (5). Slider (10) are slidably connected to both sides of the two guide rods (8). Movable blocks (9) are fixedly connected to the opposite side of the multiple sliders (10). One end of movable support rod 1 (6) and movable support rod 2 (7) are rotatably connected to both sides of the two movable blocks (9). The other end of the multiple movable support rod 1 (6) is rotatably connected to the upper part of the base (5). The other end of the multiple movable support rod 2 (7) is rotatably connected to the bottom of the mounting plate (1). Buffer springs (11) are sleeved on both sides of the two guide rods (8). One end of the multiple buffer springs (11) is fixedly connected to the inside of the base (5). The other end of the multiple buffer springs (11) is fixedly connected to the side of the multiple sliders (10) that are far apart. 3.The ventilation device for rail transit construction of claim 1, wherein: The fixing component includes a movable block (24) and a pressing block (26). The two movable blocks (24) are fixedly connected to the right side of the two pull rods (22), and the two pressing blocks (26) are slidably connected inside the movable block (24).
4. The ventilation device for rail transit construction of claim 3, characterized in that: One end of a compression spring (25) is fixedly connected inside each of the two movable blocks (24), and the other end of each of the two compression springs (25) is fixedly connected to the bottom of the pressing block (26).
5. The ventilation device for rail transit construction of claim 3, wherein: Both of the movable blocks (24) are slidably connected inside the connecting block (19), and both of the pressing blocks (26) are slidably connected inside the connecting block (19).
6. The ventilation device for rail transit construction of claim 3, characterized in that: One end of each of the two reset springs (23) is fixedly connected to the right side of the connecting plate (20), and the other end of each of the two reset springs (23) is fixedly connected to the left side of the movable block (24).
7. The ventilation device for rail transit construction of claim 1, wherein: The air inlet pipe (13) is fixedly connected to a fixed frame (14), the fixed frame (14) is fixedly connected to a motor (15), the output end of the motor (15) is fixedly connected to a fan blade (16), and the left side of the filter box (12) is fixedly connected to a protective net. 8.The ventilation device for rail transit construction of claim 2, characterized in that: Positioning plates (2) are fixedly connected to both sides of the mounting plate (1), and fixing plates (4) are fixedly connected to both sides of the base (5). Dampers (3) are fixedly connected to the upper part of the two fixing plates (4), and the two positioning plates (2) are fixedly connected to the upper part of the two dampers (3).