Air shaft structure for civil air defense engineering
By introducing components such as ventilation shaft frames, solar energy mechanisms, escape doors, ventilation louvers, and fans into the ventilation shafts of civil defense projects, the problems of single escape routes and inconvenient cleaning of ventilation louvers in existing ventilation shaft structures have been solved, thereby improving safety and ventilation efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TONGJIAN CONSTR GRP CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-21
AI Technical Summary
Existing civil defense engineering ventilation shaft structures have a single escape route, poor safety, inconvenient ventilation louvers for cleaning, operation and replacement, and poor performance.
A ventilation shaft structure for civil defense engineering was designed, which adopts components such as an air shaft frame, solar energy mechanism, escape door panel, ventilation louvers, fan and guide channel. It achieves rapid installation and escape through fixing bolts, positioning mounting blocks and magnetic fasteners. The ventilation louvers are cleaned by sliders and channels, and the fan and guide channel ensure stable ventilation.
It diversifies escape routes, improves safety, facilitates the cleaning and maintenance of ventilation louvers, enhances ventilation efficiency, and improves the overall performance.
Smart Images

Figure CN224149089U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ventilation shaft technology in civil defense engineering, specifically a ventilation shaft structure for civil defense engineering. Background Technology
[0002] Civil defense projects refer to underground protective buildings constructed separately to ensure the shelter of personnel and materials, command of civil air defense, and medical rescue during wartime, as well as basements that can be used for air defense during wartime and are built in conjunction with above-ground buildings. Civil defense projects are usually designed with special ventilation shafts.
[0003] There is an existing ventilation shaft structure for civil defense projects (CN202323480842.5). This structure incorporates an escape mechanism within the ventilation shaft itself. In an emergency, personnel inside the civil defense project can climb up two escape ladders within the shaft and exit by opening a movable cover. However, this design has shortcomings. The existing equipment has only one escape exit, poor safety, and the ventilation louvers are inconvenient to clean, operate, and replace, resulting in poor performance. Therefore, a new ventilation shaft structure for civil defense projects is needed to address these issues. Utility Model Content
[0004] The purpose of this utility model is to provide a ventilation shaft structure for civil defense projects, so as to solve the problems mentioned in the background art, such as the single escape route, poor safety, inconvenient cleaning and replacement of ventilation louvers, and poor performance of a ventilation shaft structure for civil defense projects (CN202323480842.5).
[0005] To achieve the above objectives, this utility model provides the following technical solution: a ventilation shaft structure for civil defense engineering, comprising a ventilation shaft body, an exhaust shaft frame installed at the upper end of the ventilation shaft body, and a solar energy mechanism installed at the upper end of the exhaust shaft frame. A positioning mounting groove is provided at the upper corner of the ventilation shaft body, and a positioning mounting block is inserted into the inner wall of the positioning mounting groove. The upper end of the positioning mounting block is fixedly connected to the lower corner of the exhaust shaft frame. A fixing bolt is inserted into the lower end of the outer wall of the exhaust shaft frame, and an escape door panel is flipped and installed on the outer side of the inner wall of the exhaust shaft frame. A magnetic buckle groove is embedded in the lower inner side of the escape door panel, and a [missing information - likely a device or mechanism] is inserted into the inner wall of the magnetic buckle groove. A magnetic latch is fixedly connected to the lower outer side of the inner wall of the air outlet frame. Ventilation louvers are installed on the inner wall of the escape door panel. A sliding groove is opened at the upper end of the outer wall of the air outlet frame, and a slider is slidably installed on the inner wall of the sliding groove. A brush head is vertically fixedly connected to the outer wall of the slider. A guide groove is installed along the edge of the inner wall of the air outlet frame. A ladder is fixedly connected to one side of the inner wall of the air outlet body, and folding grooves are opened on both sides of the inner wall of the air outlet body. A support block is installed by flipping on the inner wall of the folding groove, and a fan is supported on the upper end of the support block. A connecting cable is electrically connected to one edge of the upper end of the fan, and the other end of the connecting cable is electrically connected to the solar energy mechanism.
[0006] Preferably, the air outlet frame is positioned and installed in conjunction with the air outlet body by positioning and installing fasteners and positioning and installing slots, and the air outlet frame is fixedly installed in conjunction with the air outlet body by fixing bolts.
[0007] Preferably, the inner wall of the guide groove has a four-head inclined structure, and the air shaft body is connected to the ventilation louvers through the guide groove.
[0008] Preferably, the shape of the groove on the rear side of the fan matches the shape of the ladder, and the fan is supported and installed on the air shaft body by a support block. The fan is electrically connected to the solar energy mechanism by a connecting cable. The support block is folded and flipped connected to the folding groove. The fan is made of EPP material.
[0009] Preferably, the escape door panels are arranged in four rings on the air outlet frame, and the escape door panels are magnetically spliced and installed with the air outlet frame through magnetic fasteners and magnetic fastener grooves.
[0010] Preferably, one end of the brush head is attached to the ventilation louvers, and the brush head is connected to the ventilation louvers by a slider and a groove for sliding brushing.
[0011] Compared with the prior art, the beneficial effects of this utility model are: the ventilation shaft structure of the civil defense project can be quickly and stably installed by means of brackets, fixing bolts, positioning mounting blocks, and positioning mounting grooves, which facilitates maintenance. Moreover, the escape door can be quickly flipped open and closed, resulting in better escape effect and higher safety. Furthermore, the ventilation can be stabilized by the fan and guide trough, and the brush head and ventilation louvers can be driven by sliders and troughs to slide and sweep, making cleaning convenient. Attached Figure Description
[0012] Figure 1 This is a front view of a ventilation shaft structure for civil defense engineering according to this utility model;
[0013] Figure 2 This is a schematic diagram of the internal structure of a ventilation shaft in a civil defense project according to the present invention;
[0014] Figure 3 This is a top view of a guide channel structure for a ventilation shaft in a civil defense project according to this utility model;
[0015] Figure 4 This is a top view of the internal structure of the air outlet frame of a ventilation shaft structure for civil defense engineering according to this utility model;
[0016] Figure 5 This utility model relates to a ventilation shaft structure for civil defense engineering. Figure 2 Enlarged view of point A in the middle;
[0017] Figure 6 This utility model relates to a ventilation shaft structure for civil defense engineering. Figure 2 Enlarged view at point B in the middle;
[0018] Figure 7 This utility model relates to a ventilation shaft structure for civil defense engineering. Figure 2 Enlarged view at point C;
[0019] Figure 8 This utility model relates to a ventilation shaft structure for civil defense engineering. Figure 4 Enlarged view of point D in the middle.
[0020] In the diagram: 1. Ventilation shaft body, 2. Ventilation shaft frame, 3. Solar panel, 4. Guide channel, 5. Connecting cable, 6. Fan, 7. Ladder, 8. Escape door panel, 9. Slider, 10. Slide rail, 11. Ventilation louver, 12. Brush head, 13. Folding groove, 14. Support block, 15. Fixing bolt, 16. Positioning mounting buckle, 17. Positioning mounting buckle groove, 18. Magnetic buckle, 19. Magnetic buckle groove. Detailed Implementation
[0021] 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.
[0022] Please see Figure 1-8This utility model provides a technical solution: a ventilation shaft structure for civil defense engineering, including a ventilation shaft body 1, an exhaust shaft frame 2, a solar energy mechanism 3, a guide groove 4, a connecting cable 5, a fan 6, a ladder 7, an escape door panel 8, a slider 9, a slide groove 10, ventilation louvers 11, a brush head 12, a folding groove 13, a support block 14, fixing bolts 15, positioning mounting blocks 16, positioning mounting grooves 17, magnetic blocks 18, and magnetic grooves 19. The exhaust shaft frame 2 is installed on the upper end of the ventilation shaft body 1, and the solar energy mechanism 3 is installed on the upper end of the exhaust shaft frame 2. The exhaust shaft frame 2 is positioned and installed with the ventilation shaft body 1 by the positioning mounting blocks 16 and the positioning mounting grooves 17 in an interlocking manner, and the exhaust shaft frame 2 is bolted to the ventilation shaft body 1 by the fixing bolts 15. This design allows for quick and easy installation and removal of positioning bolts on the exhaust shaft frame 2, facilitating maintenance and replacement. The upper corner of the exhaust shaft body 1 has a positioning mounting groove 17, and a positioning mounting block 16 is inserted into the inner wall of the groove 17. The upper end of the positioning mounting block 16 is fixedly connected to the lower corner of the exhaust shaft frame 2. A fixing bolt 15 is inserted into the lower end of the outer wall of the exhaust shaft frame 2. An escape door panel 8 is installed on the outer side of the inner wall of the exhaust shaft frame 2, arranged in four rings. The escape door panels 8 are magnetically connected to the exhaust shaft frame 2 via magnetic fasteners 18 and magnetic grooves 19, allowing for quick and easy opening and closing of the escape door panels 8, facilitating four-way escape and enhancing safety. The lower inner side of the escape door panel 8 is inlaid with... A magnetic buckle groove 19 is installed, and a magnetic buckle block 18 is inserted into the inner wall of the magnetic buckle groove 19. The magnetic buckle block 18 is fixedly connected to the lower outer side of the inner wall of the air outlet frame 2. A ventilation louver 11 is installed on the inner wall of the escape door panel 8. A sliding groove 10 is opened at the upper end of the outer wall of the air outlet frame 2, and a slider 9 is slidably inserted into the inner wall of the sliding groove 10. A brush head 12 is vertically fixed to the outer wall of the slider 9. One end of the brush head 12 is close to the ventilation louver 11, and the brush head 12 is connected to the ventilation louver 11 for sliding and brushing through the slider 9 and the sliding groove 10. This makes it easy for the brush head 12 to quickly slide and brush the ventilation louver 11, making cleaning convenient. A guide groove 4 is installed along the edge of the inner wall of the air outlet frame 2. The inner wall of the guide groove 4 has a four-headed inclined structure. The air outlet body 1 is connected to the ventilation louver 1 through the guide groove 4. The louvers 11 are connected to guide airflow, allowing the guide channel 4 to connect and improve ventilation efficiency. A ladder 7 is fixedly connected to one side of the inner wall of the ventilation shaft body 1, and folding grooves 13 are opened on both sides of the inner wall of the ventilation shaft body 1. A support block 14 is installed on the inner wall of the folding groove 13, and the upper end of the support block 14 supports the fan 6. The shape of the groove on the rear side of the fan 6 matches the shape of the ladder 7. The fan 6 is supported and installed on the ventilation shaft body 1 by the support block 14. The fan 6 is electrically connected to the solar energy mechanism 3 by a connecting cable 5. The support block 14 and the folding groove 13 are folded and flipped together. The fan 6 is made of EPP material, which makes it easy to quickly support and install the fan 6 and to quickly connect and install it electrically. In addition, the fan 6 is lightweight and easy to disassemble and assemble quickly.It does not impede escape and can even assist with ventilation. A connecting cable 5 is electrically connected to one edge of the upper part of the fan 6, and the other end of the connecting cable 5 is electrically connected to the solar panel mechanism 3.
[0023] Working principle: When using this type of ventilation shaft structure for civil defense projects, the device is first assembled and installed, and the fan 6 is supported and installed by the support block 14. Then, the fan 6 is electrically connected to the connecting cable 5. Next, the fan 6 and the guide trough 4 guide the air outward, and ventilation is achieved by opening and closing the ventilation louvers 11. When escape is needed, one can climb the ladder 7 and quickly dismantle the door by being lifted upward by the fan 6. Then, the escape door panel 8 can be opened from all four sides for escape. When not in use, it can be magnetically fixed by the magnetic buckle block 18 and magnetic buckle groove 19. When the ventilation louvers 11 need to be cleaned, the brush head 12 can be driven by the slider 9 and the sliding groove 10 to slide and brush the ventilation louvers 11. When the air shaft frame 2 and the solar energy mechanism 3 need to be replaced, they can be quickly disassembled and assembled by the fixing bolts 15. This is the usage process of this type of ventilation shaft structure for civil defense projects.
[0024] Although the present invention 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 invention should be included within the protection scope of the present invention.
Claims
1. A people's air defense project wind well structure, comprising a wind well body (1), an air outlet well frame (2) is installed on the upper end of the wind well body (1), and a solar mechanism (3) is installed on the upper end of the air outlet well frame (2), characterized in that: The upper corner of the ventilation shaft body (1) is provided with a positioning mounting groove (17), and a positioning mounting block (16) is inserted into the inner wall of the positioning mounting groove (17). The upper end of the positioning mounting block (16) is fixedly connected to the lower corner of the ventilation shaft frame (2). A fixing bolt (15) is inserted into the lower end of the outer wall of the ventilation shaft frame (2). An escape door panel (8) is flipped and installed on the outer side of the inner wall of the ventilation shaft frame (2). A magnetic buckle groove (19) is embedded in the lower end of the inner side of the escape door panel (8), and a magnetic buckle block (18) is inserted into the inner wall of the magnetic buckle groove (19). The magnetic buckle block (18) is protruding and fixedly connected to the lower end of the outer side of the inner wall of the ventilation shaft frame (2). A ventilation device is installed on the inner wall of the escape door panel (8). The louver (11) has a sliding groove (10) on the upper end of the outer wall of the air outlet frame (2), and a slider (9) is slidably inserted into the inner wall of the sliding groove (10). A brush head (12) is vertically fixed to the outer wall of the slider (9). A guide groove (4) is connected to the edge of the inner wall of the air outlet frame (2). A ladder (7) is fixedly connected to one side of the inner wall of the air outlet body (1), and folding grooves (13) are opened on both sides of the inner wall of the air outlet body (1). A support block (14) is installed on the inner wall of the folding groove (13), and a fan (6) is supported on the upper end of the support block (14). A connecting cable (5) is electrically connected to one side edge of the upper end of the fan (6), and the other end of the connecting cable (5) is electrically connected to the solar energy mechanism (3).
2. The air defense engineering air shaft structure according to claim 1, characterized in that: The air outlet frame (2) is installed in a positional position with the air outlet body (1) by means of positioning and installation fasteners (16) and positioning and installation slots (17), and the air outlet frame (2) is fixedly installed with the air outlet body (1) by means of fixing bolts (15).
3. The air defense engineering air shaft structure according to claim 2, characterized in that: The inner wall of the guide groove (4) is a four-head inclined structure, and the air shaft body (1) is connected to the ventilation louvers (11) through the guide groove (4).
4. The air defense engineering air shaft structure according to claim 3, characterized in that: The groove shape on the rear side of the fan (6) matches the shape of the ladder (7), and the fan (6) is supported and installed on the air shaft body (1) by the support block (14). The fan (6) is electrically connected to the solar energy mechanism (3) by the connecting cable (5). The support block (14) is folded and flipped connected to the folding groove (13). The fan (6) is made of EPP material.
5. The air defense engineering air shaft structure according to claim 4, characterized in that: The escape door panels (8) are arranged in four rings on the air outlet frame (2), and the escape door panels (8) are magnetically spliced and installed with the air outlet frame (2) through magnetic fasteners (18) and magnetic fastener grooves (19).
6. The air defense engineering air shaft structure according to claim 5, characterized in that: One end of the brush head (12) is attached to the ventilation louver (11), and the brush head (12) is connected to the ventilation louver (11) by sliding and brushing through the slider (9) and the groove (10).
Citation Information
Patent Citations
Air shaft structure for civil air defense engineering design
CN222161870U