A sealed fire damper

Abstract

The utility model discloses a sealed fire fighting air valve, include: exhaust duct, and the fireproof cutoff plate of exhaust duct middle part setting, the inside of fireproof cutoff plate is provided with the locating plate, and the outside of locating plate is connected with the mounting plate, still include: the sealing rubber ring, its installation is in the inside of exhaust duct, and the inside of exhaust duct is provided with cleaning assembly, the inside of fireproof cutoff plate is pasted with sealing rubber strip. The sealed fire fighting air valve, has set up the effective sealing cutoff structure in the device, makes the smoke and gas of combustion and not easy along the gap to another side penetration when the device is closed, avoids the influence that the fire prevention use effect of device is affected, sets up a plurality of surface cleaning structure in the device simultaneously, makes the dirt that sticks in the inside board surface of cutoff in the process of inside board retraction and is scraped to the outside drop of cleaning structure, improves the overall accuracy of device, has better use effect.

Description

Technical Field

[0001] This utility model relates to the field of fire-fighting air valve technology, specifically a sealed fire-fighting air valve. Background Technology

[0002] Fire dampers are key components in fire protection systems used to control airflow. They are typically installed at critical locations where ventilation and air conditioning ducts pass through fire compartments. Normally, they remain open to ensure the normal operation of the ventilation system; in the event of a fire, the fire damper quickly closes, cutting off the spread of smoke and fire along the ventilation ducts, for example;

[0003] Authorized inquiries CN212060938U disclose a monitoring-type building fire-fighting damper, relating to the field of building fire protection technology. It includes a damper frame with a ventilation duct, a rotating shaft within the damper frame, damper blades fixed to the rotating shaft for controlling the opening and closing of the ventilation duct, a damper actuator mounted on the damper frame and connected to the rotating shaft, an angle sensor mounted on the damper frame via a bracket and connected to the rotating shaft for collecting the rotation angle of the damper blades, and a front-end acquisition module electrically connected to the angle sensor via a wired connection. The angle sensor and the damper actuator are located at opposite ends of the rotating shaft. This invention connects an angle sensor to the rotating shaft of the damper blades to directly collect the rotation angle of the damper blades, allowing for intuitive acquisition of parameter data and thus determining whether the opening and closing degree of the damper blades meets requirements, achieving more accurate monitoring of the operating status of the fire-fighting damper.

[0004] However, existing fire-fighting air dampers do not have an effective sealing and shut-off structure inside the device, which means that when the device is closed, the smoke generated by combustion can still seep to the other side along the gap, thus affecting the fire-fighting effect of the device.

[0005] Therefore, in order to address the above problems, there is an urgent need to innovate the design of existing fire-fighting air valves. Utility Model Content

[0006] The purpose of this utility model is to provide a sealed fire-fighting air valve to solve the problem mentioned in the background art that the device does not have an effective sealing and blocking structure inside, which causes the smoke generated by combustion to still seep to the other side along the gap when the device is closed, thus affecting the fire-fighting effect of the device.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a sealed fire-fighting air valve, comprising: an exhaust duct, and a fireproof cut-off plate disposed in the middle of the exhaust duct, wherein a positioning plate is disposed inside the fireproof cut-off plate, and an installation plate is connected to the outside of the positioning plate;

[0008] Also includes:

[0009] A sealing ring is installed inside the exhaust duct, and a cleaning component is provided on the inner side of the exhaust duct. A sealing strip is attached to the inner side of the fireproof cut-off plate. A second guide rod is connected to the outer side of the mounting plate, and a strong spring is installed on the outer side of the second guide rod.

[0010] A drive rod extends through the rear side of the mounting plate, and a first drive disc is provided in the middle of the drive rod. A second drive disc is installed on the rear side of the first drive disc, and a second operating handle is provided on the rear side of the second drive disc. A second locking block is installed on the upper side of the second operating handle. A guide block is provided at the front end of the mounting plate, and a third guide rod is connected to the inner side of the guide block.

[0011] In one possible scenario, the fireproof cut-off plate and the positioning plate are all engaged with the mounting plate, and the fireproof cut-off plate is symmetrically arranged about the central axis of the exhaust duct.

[0012] In one possible implementation, the mounting plate is slidably connected to the guide block and the second guide rod, and the second guide rod is symmetrically arranged about the central axis of the mounting plate.

[0013] In one possible implementation, the mounting plate is threadedly connected to the drive rod, and the threads at the upper and lower ends of the drive rod are arranged in opposite directions.

[0014] In one possible implementation, the first drive disc and the second drive disc are engaged with each other, and the drive rod and the first drive disc are rotatably connected to the exhaust duct.

[0015] In one possible implementation, the second locking block is engaged with the second operating handle, and both the second operating handle and the second drive disc are rotatably connected to the exhaust duct.

[0016] In one possible implementation, the cleaning assembly includes a mounting block installed inside the exhaust duct, and a first locking block is provided inside the mounting block. A first guide rod is connected to the outer side of the first locking block, and a first operating handle is connected to the middle of the first locking block. A return spring is provided in the middle of the first operating handle. A positioning block is provided inside the mounting block, and a support plate is connected to the inner side of the positioning block. A cleaning strip is attached to the inner side of the support plate.

[0017] The support plate is engaged with the positioning block and the first locking block, and the first locking block is slidably connected with the first guide rod.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This sealed fire-fighting damper has an effective sealing and cutting-off structure inside the device, which makes it difficult for the smoke generated by combustion to seep to the other side along the gap when the device is closed, thus avoiding affecting the fire-resistant performance of the device. At the same time, multiple surface cleaning structures are set inside the device, so that the mud and dirt adhering to the surface of the inner plate are scraped off to the outside by the cleaning structures during the retraction of the inner plate, improving the overall accuracy of the device and having a better performance. Specifically, as shown below:

[0019] 1. The first locking block is pushed inward by the reset spring in conjunction with the first guide rod, so that the first locking block, which is moved inward, locks and limits the support plate installed inside the positioning block, preventing the support plate and cleaning strip from falling outward during use. At this time, the cleaning strip contacts the outer surface of the fireproof cut-off plate, so that the mud and dirt on the surface of the fireproof cut-off plate are scraped off by the cleaning strip when the fireproof cut-off plate moves up and down, preventing the mud and dirt from adhering to the outer surface of the fireproof cut-off plate for a long time and affecting the service life of the fireproof cut-off plate.

[0020] 2. By using the second operating handle in conjunction with the second drive disc to push the drive rod and the first drive disc to rotate on the rear side of the exhaust duct, the drive rod pushes the mounting plate and the fireproof cut-off plate to move inward along the third guide rod. At this time, the fireproof cut-off plate, together with the sealing strip and sealing ring, forms a sealed cut-off structure to prevent the smoke generated by the fire from being transported to the other side of the space through this device, thereby improving the safety of the device.

[0021] 3. A strong spring, in conjunction with the second guide rod, pushes the mounting plate to reposition outward along the third guide rod, causing the mounting plate to push the drive rod and the first drive disc to rotate on the rear side of the exhaust duct. At this time, the first drive disc pushes the second drive disc and the second operating handle connected to its rear side to rotate and reset, thereby completing the quick reset of the device and facilitating its secondary use. Attached Figure Description

[0022] Figure 1 This is a frontal cross-sectional view of the overall structure of this utility model;

[0023] Figure 2 This is a side view sectional structural diagram of the present invention;

[0024] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0025] Figure 4 This is a schematic cross-sectional view of the connection between the mounting block and the support plate of this utility model.

[0026] Figure 5This is a schematic cross-sectional view of the connection between the fireproof cut-off plate and the mounting plate of this utility model.

[0027] In the diagram: 1. Exhaust duct; 2. Mounting block; 3. First locking block; 4. First guide rod; 5. First operating handle; 6. Return spring; 7. Positioning block; 8. Support plate; 9. Cleaning strip; 10. Sealing ring; 11. Fireproof cut-off plate; 12. Positioning plate; 13. Sealing strip; 14. Mounting plate; 15. Second guide rod; 16. Strong spring; 17. Drive rod; 18. First drive disc; 19. Second drive disc; 20. Second operating handle; 21. Second locking block; 22. Guide block; 23. Third guide rod. Detailed Implementation

[0028] 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.

[0029] Please see Figure 1-5 This utility model provides a technical solution: a sealed fire-fighting air valve, including an exhaust pipe 1, a mounting block 2, a first locking block 3, a first guide rod 4, a first operating handle 5, a reset spring 6, a positioning block 7, a support plate 8, a cleaning rubber strip 9, a sealing rubber ring 10, a fireproof cut-off plate 11, a positioning plate 12, a sealing rubber strip 13, a mounting plate 14, a second guide rod 15, a strong spring 16, a drive rod 17, a first drive disc 18, a second drive disc 19, a second operating handle 20, a second locking block 21, a guide block 22, and a third guide rod 23.

[0030] Specifically, such as Figure 1 and Figure 4As shown, before using the device, by pulling the first operating handle 5 outward, the first operating handle 5 causes the first locking block 3 connected to its inner side to move outward and compress the return spring 6. Due to the sliding connection structure between the first locking block 3 and the first guide rod 4, the first locking block 3 is guided and limited by the first guide rod 4 during the outward displacement, preventing the first locking block 3 from shifting position during movement. At this time, because of the engaging connection structure between the positioning block 7 and the support plate 8, the operator can easily install the support plate 8 and the cleaning strip 9 inside the exhaust duct 1 and the mounting block 2. At this time, releasing the pull on the first operating handle 5 causes the compressed return spring 6 to lose its tension and generate a rebound reaction force. At this time, the return spring 6 pushes the first locking block 3 connected to its inner side back along the... The first guide rod 4 moves inward to reset, and due to the engaging connection between the first locking block 3 and the support plate 8, the inwardly moving first locking block 3 locks and limits the support plate 8 installed inside the positioning block 7, preventing the support plate 8 and the cleaning strip 9 from falling outward during use. At this time, the cleaning strip 9 contacts the outer surface of the fireproof cut-off plate 11, so that when the fireproof cut-off plate 11 moves up and down, the mud and dirt on its surface are scraped off by the cleaning strip 9, preventing the mud and dirt from adhering to the outer surface of the fireproof cut-off plate 11 for a long time and affecting the service life of the fireproof cut-off plate 11. At the same time, this quick-release connection structure allows the operator to easily disassemble and maintain the cleaning strip 9 and the support plate 8 after the device is used, improving the maintenance and disassembly efficiency of the support plate 8 and the cleaning strip 9 and reducing the operating cost of the device.

[0031] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, in the event of a fire, by pulling the second locking block 21 upwards, the upwardly displaced second locking block 21 releases its engagement limit on the second operating handle 20. At this time, rotating the second operating handle 20 located at the rear of the exhaust duct 1 causes the second operating handle 20 to drive the second drive disc 19 connected to its front end to rotate at the rear of the exhaust duct 1. Due to the meshing connection structure between the second drive disc 19 and the first drive disc 18, the second drive disc 19 can effectively push the first drive disc 18 and the drive rod 17 to rotate at the rear of the exhaust duct 1 during the rotation process. At this time, due to the threaded connection structure between the drive rod 17 and the mounting plate 14, during the rotation process... The drive rod 17 can effectively push the mounting plate 14 connected to its front end to move inward. Because the upper and lower ends of the drive rod 17 have opposite threaded structures, during rotation, the drive rod 17 can synchronously push the symmetrically arranged mounting plates 14 to move inward. Due to the sliding connection between the mounting plate 14, the guide block 22, and the third guide rod 23, the mounting plate 14 is guided and limited by the third guide rod 23 during inward movement, preventing jamming due to uneven force. Simultaneously, the inward movement of the mounting plate 14 pushes the fireproof cut-off plate 11 and the positioning plate 12 connected to its inner side inward. The displacement causes the fireproof cut-off plate 11, together with the sealing strip 13 and the sealing ring 10, to form a sealed cut-off structure. At this time, pushing the second locking block 21 inwards, and due to the engaging connection between the second locking block 21 and the second operating handle 20, causes the downward-displaced second locking block 21 to lock the second operating handle 20, preventing smoke generated during a fire from being transported to the other side through this device, thus improving the safety of the device. Simultaneously, after the disaster relief work is completed, pulling upwards to remove the second locking block 21 releases its engaging limit on the second operating handle 20. At this time, the strong spring 16 compressed on the outside of the mounting plate 14 loses its locking restriction. The rebound force causes the strong spring 16 to push the mounting plate 14 connected to its inner side to move outward. Due to the sliding connection structure between the mounting plate 14 and the second guide rod 15, the mounting plate 14 is guided and limited by the second guide rod 15 during the outward sliding reset process, preventing the mounting plate 14 from shifting position during movement. At this time, the mounting plate 14 pushes the drive rod 17 and the first drive disk 18 connected to its rear side to rotate in opposite directions, so that the first drive disk 18 pushes the second drive disk 19 and the second operating handle 20 connected to its rear side to reset and rotate, thereby completing the quick reset of the device and facilitating the secondary use of the device.

[0032] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0033] 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 sealed fire-fighting damper, comprising: The exhaust duct (1) and the fireproof cut-off plate (11) provided in the middle of the exhaust duct (1) are provided with a positioning plate (12) inside the fireproof cut-off plate (11) and an installation plate (14) connected to the outside of the positioning plate (12). Its characteristic is that it further includes: A sealing ring (10) is installed inside the exhaust duct (1), and a cleaning component is provided on the inner side of the exhaust duct (1). A sealing strip (13) is attached to the inner side of the fireproof cut-off plate (11). A second guide rod (15) is connected to the outer side of the mounting plate (14), and a strong spring (16) is installed on the outer side of the second guide rod (15). A drive rod (17) extends through the rear side of the mounting plate (14), and a first drive disc (18) is provided in the middle of the drive rod (17). A second drive disc (19) is installed on the rear side of the first drive disc (18), and a second operating handle (20) is provided on the rear side of the second drive disc (19). A second locking block (21) is installed on the upper side of the second operating handle (20). A guide block (22) is provided at the front end of the mounting plate (14), and a third guide rod (23) is connected to the inner side of the guide block (22).

2. The sealed fire-fighting air valve according to claim 1, characterized in that: The fireproof cut-off plate (11) and the positioning plate (12) are all engaged with the mounting plate (14), and the fireproof cut-off plate (11) is symmetrically arranged about the central axis of the exhaust duct (1).

3. A sealed fire-fighting air valve according to claim 1, characterized in that: The mounting plate (14), the guide block (22), and the second guide rod (15) are all slidably connected to each other, and the second guide rod (15) is symmetrically arranged about the central axis of the mounting plate (14).

4. A sealed fire-fighting air valve according to claim 1, characterized in that: The mounting plate (14) is threadedly connected to the drive rod (17), and the threads at the upper and lower ends of the drive rod (17) are opposite to each other.

5. A sealed fire-fighting air valve according to claim 1, characterized in that: The first drive disc (18) and the second drive disc (19) are meshed together, and the drive rod (17) and the first drive disc (18) are rotatably connected to the exhaust pipe (1).

6. A sealed fire-fighting air valve according to claim 1, characterized in that: The second locking block (21) is engaged with the second operating handle (20), and the second operating handle (20), the second drive disk (19), and the exhaust pipe (1) are all rotatably connected.

7. A sealed fire-fighting air valve according to claim 1, characterized in that: The cleaning assembly includes a mounting block (2) installed inside the exhaust duct (1), and a first locking block (3) is provided inside the mounting block (2). A first guide rod (4) is connected to the outside of the first locking block (3), and a first operating handle (5) is connected to the middle of the first locking block (3). A return spring (6) is provided in the middle of the first operating handle (5). A positioning block (7) is provided inside the mounting block (2), and a support plate (8) is connected to the inside of the positioning block (7). A cleaning strip (9) is attached to the inside of the support plate (8). The support plate (8) is engaged with the positioning block (7) and the first locking block (3), and the first locking block (3) is slidably connected with the first guide rod (4).

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