A ventilation filtering device for subway civil air defense engineering

Abstract

The utility model relates to the new trend air exchange filter technical field discloses a kind of air exchange filter devices for subway civil air defense engineering, a kind of air exchange filter devices for subway civil air defense engineering, including box, the box outer wall both sides are equipped with adjusting assembly. The adjusting assembly includes air intake duct, the air intake duct is fixedly connected with box, ball valve is arranged in the air intake duct, the ball valve outer wall one side is fixedly connected with rotating shaft, the rotating shaft one end is fixedly connected with limit disc, the limit disc inner wall is equipped with limit hole, the limit hole inner wall is slidably connected with movable rod, the movable rod outer wall one side is fixedly connected with baffle. In the utility model, the air exchange filter device of subway civil air defense engineering can control the air intake of air by adjusting air intake air volume component. The design of limit disc and movable rod makes the adjustment of air intake convenient. Fan structure in air outlet duct can accelerate air outlet rate, ensure that equipment is quickly operated in subway civil air defense engineering.

Description

Technical Field

[0001] This utility model relates to the field of fresh air exchange and filtration technology, and in particular to a ventilation and filtration device for use in subway civil defense projects. Background Technology

[0002] A ventilation and filtration device for subway civil defense projects is a ventilation system designed specifically for the unique environment of subway tunnels and civil defense facilities. The interior spaces of subway civil defense projects are relatively enclosed, with dense crowds and numerous pieces of equipment. Poor air circulation can easily lead to a decline in air quality, affecting the health of personnel and the operation of equipment. An efficient ventilation and filtration device is crucial for ensuring air quality within subway civil defense projects, maintaining a good working environment, and responding to emergencies. This device not only needs to have effective ventilation capabilities but also effectively filter dust, impurities, and harmful gases from the air. Furthermore, it must be able to quickly adjust the ventilation volume to meet the needs of different scenarios under special circumstances.

[0003] Existing ventilation systems in subway civil defense projects typically employ relatively simple mechanical structures. Their core components mainly include ventilation ducts, fans, and simple filters. The ventilation ducts guide airflow, while the fans, driven by motors, generate airflow, drawing outside air into the building or expelling internal air. Filters are installed at the air inlets or outlets of the ventilation ducts to intercept large particles of dust and impurities in the air. This system works by using the rotation of the fan to create negative or positive pressure, forcing air through the filters into or out of the system, thus achieving air circulation and filtration. However, this simple structure and technical principle have some limitations in practical applications.

[0004] A significant problem with existing simple ventilation devices is the difficulty in adjusting the airflow at the inlet. Due to their relatively simple structural design, they typically lack a dedicated adjustment mechanism, and the airflow can only be indirectly controlled by adjusting the fan speed, which results in low precision. In the actual operation of subway civil defense projects, the required ventilation volume varies depending on the time of day and operating conditions. For example, a larger ventilation volume is needed when people are densely packed, while adjustments are required to meet specific needs during equipment maintenance or special circumstances. Existing devices cannot flexibly adapt to these changes, leading to unsatisfactory ventilation effects, potentially affecting air quality inside the project, and even failing to meet the requirements for rapid ventilation in emergencies. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a ventilation and filtration device for subway civil defense projects, which aims to improve the problem that the air intake volume can only be indirectly controlled by adjusting the fan speed, and it is difficult to adjust the airflow at the air intake.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a ventilation and filtration device for subway civil defense projects, comprising a housing, wherein both sides of the outer wall of the housing have adjustment components;

[0007] The adjustment assembly includes an air inlet duct, which is fixedly connected to a housing. A ball valve is installed inside the air inlet duct. A rotating shaft is fixedly connected to one side of the outer wall of the ball valve. A limit plate is fixedly connected to one end of the rotating shaft. A limit hole is formed in the inner wall of the limit plate. A movable rod is slidably connected to the inner wall of the limit hole. A baffle is fixedly connected to one side of the outer wall of the movable rod. A handle is fixedly connected to one end of the movable rod. A baffle is fixedly connected to one end of the movable rod. A spring is fixedly connected to one side of the outer wall of the baffle. One end of the spring is fixedly connected to the air inlet duct. An air outlet duct is fixedly connected to one side of the outer wall of the housing. A fixing strip is fixedly connected to the inner wall of the air outlet duct. A motor is fixedly connected to one end of the fixing strip. A fan is fixedly connected to the output end of the motor.

[0008] Furthermore, a connector is fixedly connected to the upper side of the outer wall of the housing. The connector is provided with a threaded hole. A fixed shaft is rotatably connected to the inner wall of the connector. One end of the fixed shaft is rotatably connected to a limiting plate. A latch is fitted to the upper side of the limiting plate. A threaded bolt is fixedly connected to one side of the outer wall of the latch.

[0009] Furthermore, a filter plate is provided on the inner wall of the box, and filter holes are provided on the outer side of the filter plate.

[0010] Furthermore, a sealing strip is fixedly connected to one side of the outer wall of the filter plate, and a handle is fixedly connected to one side of the outer wall of the sealing strip.

[0011] Furthermore, the limiting plate has a groove inside, which fits into the latch.

[0012] Furthermore, the connector has a groove inside, which fits into the limiting plate.

[0013] Furthermore, the handle is located vertically above the sealing strip, and the sealing strip is parallel to and above the limiting plate.

[0014] Furthermore, the ball valve is fitted to the air inlet duct, and the fan is fitted to the air outlet duct.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the ventilation and filtration device for subway civil defense projects can control the amount of air intake by setting an adjustable air intake component. The design of the ball valve in the air intake duct, together with the limit plate and the movable rod, makes the adjustment of the air intake more convenient. At the same time, the motor and fan structure in the air outlet duct can effectively accelerate the air outlet rate, ensuring that the equipment can operate in complex environments such as subway civil defense projects.

[0017] 2. In this utility model, the device also has convenient maintenance and replacement functions. The filter plate is fixed by the latch and the threaded bolt, which can be quickly unlocked and replaced, greatly improving the maintenance efficiency of the equipment and reducing downtime. At the same time, the sealing strip and handle design on the filter plate further enhance the sealing performance and ease of operation. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a ventilation and filtration device for subway civil defense projects proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of the filtration and snap-fit ​​structure of a ventilation and filtration device for subway civil defense projects proposed in this utility model.

[0020] Figure 3 This is a schematic diagram showing the details of the buckle structure of a ventilation and filtration device for subway civil defense projects proposed in this utility model;

[0021] Figure 4 This is a schematic diagram showing the detailed structure of an air intake adjustment device for a subway civil defense project proposed in this utility model.

[0022] Figure 5 This is a schematic diagram showing the air intake structure of a ventilation and filtration device for subway civil defense projects proposed in this utility model.

[0023] Figure 6 This is a schematic diagram showing the detailed structure of the air outlet of a ventilation and filtration device for subway civil defense projects proposed in this utility model.

[0024] Legend:

[0025] 1. Housing; 2. Sealing strip; 3. Air inlet duct; 4. Limiting hole; 5. Handle; 6. Rotating shaft; 7. Limiting plate; 8. Filter plate; 9. Lock; 10. Threaded hole; 11. Threaded bolt; 12. Fixed shaft; 13. Limiting plate; 14. Connector; 15. Ball valve; 16. Movable rod; 17. Spring; 18. Handle; 19. Fan; 20. Motor; 21. Fixing strip; 22. Air outlet duct; 23. Filter hole; 24. Baffle. Detailed Implementation

[0026] 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.

[0027] Reference Figures 1-6 This utility model provides an embodiment of a ventilation and filtration device for subway civil defense projects, comprising a housing 1, a filter plate 8 disposed on the inner wall of the housing 1, a sealing strip 2 fixedly connected to one side of the outer wall of the filter plate 8, and a handle 5 fixedly connected to one side of the outer wall of the sealing strip 2, the handle 5 being located vertically above the sealing strip 2, the sealing strip 2 being parallel to and above a limiting plate 13, and filter holes 23 disposed on the outer side of the filter plate 8. The filter plate 8 and the filter holes 23 are capable of filtering the air entering the housing 1, removing impurities and dust from the air. To ensure the quality of the exhaust air, both sides of the outer wall of the housing 1 are equipped with adjustment components, allowing the equipment to flexibly adjust the air intake and exhaust rates according to different usage needs, thus improving the equipment's versatility and applicability. The adjustment components include an air intake duct 3, which is fixedly connected to the housing 1. A ball valve 15 is installed inside the air intake duct 3, allowing for precise control of the air intake. Adjusting the opening and closing degree of the ball valve 15 enables precise regulation of the air intake. The ball valve 15 is fitted into the air intake duct 3, and the fan 19 is connected to the exhaust duct 2. 2. A rotating shaft 6 is fixedly connected to one side of the outer wall of the ball valve 15. A limiting disc 7 is fixedly connected to one end of the rotating shaft 6. A limiting hole 4 is opened on the inner wall of the limiting disc 7. A movable rod 16 is slidably connected to the inner wall of the limiting hole 4. The sliding connection between the movable rod 16 and the limiting hole 4 makes operation more convenient and allows for easy adjustment of the position of the ball valve 15. At the same time, the design of the limiting hole 4 can constrain the movement of the movable rod 16 to a certain extent. A baffle 24 is fixedly connected to one side of the outer wall of the movable rod 16, and a handle 18 is fixedly connected to one end of the movable rod 16. One end of the movable rod 16 is fixedly connected to the baffle 24, and one side of the outer wall of the baffle 24 is fixedly connected to the spring 17. One end of the spring 17 is fixedly connected to the air inlet pipe 3. One side of the outer wall of the box 1 is fixedly connected to the air outlet pipe 22. The inner wall of the air outlet pipe 22 is fixedly connected to the fixing strip 21. One end of the fixing strip 21 is fixedly connected to the motor 20. The output end of the motor 20 is fixedly connected to the fan 19. This structure enables the air outlet system to operate stably. The motor 20 drives the fan 19 to rotate, thereby expelling the air inside the box 1 and adjusting the air outlet rate.

[0028] Reference Figures 1-6A connector 14 is fixedly connected to the upper side of the outer wall of the housing 1. The connector 14 has a groove inside, which fits with the limiting plate 13. The connector 14 is provided with a threaded hole 10, which can be connected to other components such as the fixed shaft 12 by threaded connection. The threaded connection has the advantages of firm connection, easy disassembly and installation, and convenient maintenance and repair of the equipment. The fixed shaft 12 is rotatably connected to the inner wall of the connector 14. The rotatable connection design allows the fixed shaft 12 to rotate freely in the connector 14. This structure can realize the flexible adjustment of the limiting plate 13. One end of the fixed shaft 12 is rotatably connected to the limiting plate 13. The limiting plate 13 has a groove inside, which fits with the latch 9. The latch 9 is fitted on the upper side of the limiting plate 13. The latch 9 is designed to fix the position of the limiting plate 13. When the limiting plate 13 is adjusted to a suitable angle or position, it can be locked by the latch 9 to prevent it from shifting due to vibration or other external forces during operation. A threaded bolt 11 is fixedly connected to one side of the outer wall of the latch 9.

[0029] Working principle: When air filtration is required, air enters through the air inlet duct 3. First, pull the handle 18 to drive the movable rod 16, which facilitates the control of the adjustment limit plate 7. The baffle 24 compresses the spring 17, which, in conjunction with the limit hole 4, releases the control of the limit plate 7 to control and adjust the air intake. By rotating the limit plate 7, the rotating shaft 6 drives the ball valve 15 to adjust the air intake. After the air enters the housing 1, it is filtered through the filter holes 23 on the filter plate 8. The sealing strip 2 prevents unfiltered gas from escaping from the housing 1. The air reaches the air outlet duct 22. The fixing strip 21 fixes the motor 20 to prevent the motor 20 from swinging due to the influence of the fan 19. The motor 20 drives the fan 19 to rotate, which can speed up the air output rate of the filtered air.

[0030] Furthermore, when replacing the filter plate 8, twisting the locking buckle 9 causes the threaded bolt 11 to rotate out of the threaded hole 10, thereby unlocking the buckle and making it easier to open when replacing it later. Pulling the limiting plate 13 upward rotates it through the fixed shaft 12, opening the limiting plate 13 and facilitating the release of the restriction on the filter plate 8. The connector 14 is fixedly connected to the housing 1 to prevent detachment. With the help of the handle 5, the filter plate 8 can be pulled out, thereby achieving the purpose of replacing the filter plate 8.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ventilation and filtration device for subway civil defense projects, comprising a housing (1), characterized in that: The outer walls of the box (1) are equipped with adjustment components on both sides; The regulating assembly includes an air inlet duct (3), which is fixedly connected to a housing (1). A ball valve (15) is installed inside the air inlet duct (3). A rotating shaft (6) is fixedly connected to one side of the outer wall of the ball valve (15). A limiting plate (7) is fixedly connected to one end of the rotating shaft (6). A limiting hole (4) is opened on the inner wall of the limiting plate (7). A movable rod (16) is slidably connected to the inner wall of the limiting hole (4). A baffle (24) is fixedly connected to one side of the outer wall of the movable rod (16). A handle (18) is fixedly connected to one end of the movable rod (16), a baffle (24) is fixedly connected to one end of the movable rod (16), a spring (17) is fixedly connected to one side of the outer wall of the baffle (24), an air inlet pipe (3) is fixedly connected to one end of the spring (17), an air outlet pipe (22) is fixedly connected to one side of the outer wall of the box (1), a fixing strip (21) is fixedly connected to the inner wall of the air outlet pipe (22), a motor (20) is fixedly connected to one end of the fixing strip (21), and a fan (19) is fixedly connected to the output end of the motor (20).

2. The ventilation and filtration device for subway civil defense projects according to claim 1, characterized in that: A connector (14) is fixedly connected to the upper side of the outer wall of the housing (1). The connector (14) is provided with a threaded hole (10). A fixed shaft (12) is rotatably connected to the inner wall of the connector (14). A limiting plate (13) is rotatably connected to one end of the fixed shaft (12). A latch (9) is fitted on the upper side of the limiting plate (13). A threaded bolt (11) is fixedly connected to one side of the outer wall of the latch (9).

3. The ventilation and filtration device for subway civil defense projects according to claim 1, characterized in that: The inner wall of the box (1) is provided with a filter plate (8), and the outer side of the filter plate (8) is provided with filter holes (23).

4. The ventilation and filtration device for subway civil defense projects according to claim 3, characterized in that: A sealing strip (2) is fixedly connected to one side of the outer wall of the filter plate (8), and a handle (5) is fixedly connected to one side of the outer wall of the sealing strip (2).

5. A ventilation and filtration device for subway civil defense projects according to claim 2, characterized in that: The limiting plate (13) has a groove inside, which fits into the buckle (9).

6. A ventilation and filtration device for subway civil defense projects according to claim 5, characterized in that: The connector (14) has a groove inside, which fits into the limiting plate (13).

7. A ventilation and filtration device for subway civil defense projects according to claim 4, characterized in that: The handle (5) is located vertically above the sealing strip (2), and the sealing strip (2) is parallel to the upper part of the limiting plate (13).

8. A ventilation and filtration device for subway civil defense projects according to claim 1, characterized in that: The ball valve (15) is attached to the air inlet pipe (3), and the fan (19) is attached to the air outlet pipe (22).

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