Wing type double-blade smoke exhaust fireproof valve

Abstract

The utility model relates to the technical field of fire protection engineering, and discloses a wing type double-blade smoke exhaust fireproof valve which comprises two valve blades, and is characterized in that clamping wheels are arranged at the two ends of the outer walls of the two valve blades, rack plates are connected to the outer walls of the multiple clamping wheels in a meshed mode, vertical plates are fixedly connected to the rear sides of the multiple rack plates, and the vertical plates are connected with the clamping wheels in a meshed mode. A transverse plate is fixedly connected to the bottom ends of the two vertical plates, a push-pull plate is fixedly connected to the middle of the transverse plate, a limiting rod is fixedly connected to the outer wall of the push-pull plate, a rotating plate is arranged at the bottom of the limiting rod, movable grooves are formed in the periphery of the outer wall of the rotating plate, and the outer wall of the limiting rod is slidably connected with the inner walls of the movable grooves. Limiting grooves are formed in the two sides of the top end of the movable groove. According to the utility model, the position of the valve blade can be accurately adjusted in different working states through the meshed connection of the clamping wheel and the rack plate, and the control mode of the fireproof valve is more diversified through the mechanical control of the handle.

Description

Technical Field

[0001] This utility model relates to the field of fire protection engineering technology, and in particular to an airfoil-shaped double-leaf smoke exhaust fire damper. Background Technology

[0002] In modern buildings, a good ventilation system is key to ensuring indoor air quality and occupant comfort. At the same time, fire safety is also of paramount importance. When a fire occurs, it is essential to effectively control the spread of the fire and remove smoke in a timely manner to create conditions for personnel evacuation and fire rescue. Airfoil-shaped smoke exhaust fire dampers are designed to meet this complex need.

[0003] The existing smoke exhaust fire damper adopts a unique airfoil-shaped structure design, which can reduce airflow resistance, improve ventilation efficiency, and reduce energy consumption. In the event of a fire, it can quickly close to effectively prevent the spread of fire and smoke. It can also adjust the air volume according to actual needs to meet the requirements of different ventilation scenarios.

[0004] However, existing airfoil-type double-leaf smoke exhaust fire dampers rely too heavily on electronic actuators and temperature sensing elements for control, lacking manual mechanical control. The electronic actuators and temperature sensing elements may malfunction due to electrical faults, mechanical failures, and fluctuations in ambient temperature, causing the fire damper to close unnecessarily, affecting the normal operation of the ventilation system, or causing serious disasters due to untimely closure. At the same time, high temperatures may cause material deformation, affecting the closing performance of the valve blades. Therefore, an airfoil-type double-leaf smoke exhaust fire damper is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an airfoil-shaped double-leaf smoke exhaust fire damper, which aims to improve the problem of the lack of manual mechanical control in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an airfoil-shaped double-leaf smoke exhaust fire damper, comprising two valve leaves, each valve leaf having a retaining wheel at both ends of its outer wall, a rack plate meshing with the outer walls of multiple retaining wheels, a vertical plate fixedly connected to the rear side of each rack plate, a horizontal plate fixedly connected to the bottom end of each vertical plate, a push-pull plate fixedly connected to the middle of the horizontal plate, a limit rod fixedly connected to the outer wall of the push-pull plate, a rotating plate at the bottom of the limit rod, movable grooves formed around the outer wall of the rotating plate, the outer wall of the limit rod slidingly connected to the inner wall of the movable groove, limit grooves formed on both sides of the top of the movable groove, a handle fixedly connected to the bottom of the rotating plate, a rotating shaft rotatably connected to the inner wall of the handle, and a reinforcing mechanism provided on the outer wall of each valve leaf to reinforce the valve leaves and prevent deformation or displacement of the valve leaves.

[0007] As a further description of the above technical solution:

[0008] The reinforcement mechanism includes multiple reinforcement rods, one end of each reinforcement rod is fixedly connected to the outer wall of the valve leaf, and the other end of each reinforcement rod is fixedly connected to a reinforcement plate. An extension plate is fixedly connected to the outer wall of the reinforcement plate. A locking ring is fixedly connected to the outer wall of the upper extension plate, and a buckle is fixedly connected to the outer wall of the lower extension plate. The front end of the locking ring has an upper groove, and the rear end of the locking ring has a lower groove.

[0009] As a further description of the above technical solution:

[0010] The inner walls of both valve leaves are fixedly connected with support rods, and the two ends of the two support rods are fixedly connected to the outer wall of the cam.

[0011] As a further description of the above technical solution:

[0012] The outer walls of both support rods extend laterally through the valve body, and the outer walls of both support rods are rotatably connected to the valve body.

[0013] As a further description of the above technical solution:

[0014] The outer wall of the valve body is provided with a shell, and multiple support columns are fixedly connected to the bottom outer wall of the valve body and the bottom inner wall of the shell.

[0015] As a further description of the above technical solution:

[0016] The bottom of the outer casing is provided with a sliding groove, and the outer wall of the rotating shaft is fixedly connected to the inner wall of the sliding groove.

[0017] As a further description of the above technical solution:

[0018] A handle is fixedly connected to the bottom of the handle, and the handle is made of fluororubber.

[0019] As a further description of the above technical solution:

[0020] Each of the two valve leaves has a sealing groove on an adjacent side, and the two sealing grooves are slidably connected.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the meshing connection between the cam and the rack plate has high precision, which can ensure the accurate position adjustment of the valve leaf under different working conditions, meet various smoke exhaust and fire prevention needs, and increase the redundancy of the system through the mechanical control of the handle, making the control mode of the fire damper more diversified, improving the stability and reliability of the entire ventilation and fire prevention system, and reducing the risk of system paralysis due to failure of a single control mode.

[0023] 2. In this utility model, the reinforcing rod and reinforcing plate provide additional support for the valve leaf, further enhancing the stability of the overall structure and effectively preventing the valve leaf from deforming due to changes in airflow pressure and temperature during use. This allows the valve leaf to withstand greater external forces, improving the reliability and durability of the smoke exhaust fire damper. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of an airfoil-shaped double-leaf smoke exhaust fire damper proposed in this utility model;

[0025] Figure 2 This is a front structural diagram of an airfoil-shaped double-leaf smoke exhaust fire damper proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the valve leaf opening and closing device of an airfoil-shaped double-leaf smoke exhaust fire damper proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the handle structure of an airfoil-shaped double-leaf smoke exhaust fire damper proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of the outer shell of an airfoil-shaped double-leaf smoke exhaust fire damper proposed in this utility model;

[0029] Figure 6 This is a structural schematic diagram of a reinforcement device for an airfoil-shaped double-leaf smoke exhaust fire damper proposed in this utility model;

[0030] Figure 7 This is a schematic diagram of the locking mechanism of a reinforcing device for an airfoil-shaped double-leaf smoke exhaust fire damper proposed in this utility model.

[0031] Legend:

[0032] 1. Valve leaf; 2. Reinforcing mechanism; 201. Reinforcing rod; 202. Reinforcing plate; 203. Extension plate; 204. Locking ring; 205. Upper groove; 206. Lower groove; 207. Locking buckle; 3. Support rod; 4. Snap roller; 5. Rack plate; 6. Sealing groove; 7. Vertical plate; 8. Horizontal plate; 9. Push-pull plate; 10. Limiting rod; 11. Rotating plate; 12. Movable groove; 13. Limiting groove; 14. Handle; 15. Grip; 16. Rotating shaft; 17. Housing; 18. Slide groove; 19. Support column; 20. Valve body. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0034] See attached document Figure 3 Appendix Figure 4 and attached Figure 5 This utility model provides an embodiment of an airfoil-shaped double-leaf smoke exhaust fire damper, comprising two valve leaves 1. When closed, the two valve leaves 1 can block the spread of smoke and fire, playing a key role in fire prevention and smoke exhaust. When open, they ensure the normal flow of air or smoke. Each end of the outer wall of the two valve leaves 1 is provided with a retaining wheel 4, and each inner wall of the two valve leaves 1 is fixedly connected with a support rod 3, enhancing the overall stability of the valve leaves 1. The two ends of the support rods 3 are fixedly connected to the outer walls of the retaining wheels 4. Multiple retaining wheels... The outer walls of valves 4 are all meshed with rack plates 5. Vertical plates 7 are fixedly connected to the rear sides of multiple rack plates 5, connecting them to ensure synchronous movement and allowing the two valve leaves 1 to open and close simultaneously. Horizontal plates 8 are fixedly connected to the bottom ends of the two vertical plates 7, and a push-pull plate 9 is fixedly connected to the middle of the horizontal plates 8. The push-pull plate 9 can move the horizontal plates 8, vertical plates 7, and rack plates 5, thereby controlling the opening and closing of the valve leaves 1. A limit rod 10 is fixedly connected to the outer wall of the push-pull plate 9 for limiting movement. A rotating plate 11 is provided at the bottom of the rod 10. Movable grooves 12 are formed around the outer walls of the rotating plate 11. The outer wall of the limiting rod 10 is slidably connected to the inner wall of the movable groove 12. Limiting grooves 13 are formed on both sides of the top of the movable groove 12. The limiting rod 10 is inserted into the limiting groove 13 to prevent accidental movement of the valve leaf 1 and ensure the stability of the valve leaf 1 in the closed state. A handle 14 is fixedly connected to the bottom of the rotating plate 11. A rotating shaft 16 is rotatably connected to the inner wall of the handle 14. The outer walls of the two support rods 3 are transversely penetrating through the handle. The valve body 20 has two support rods 3 whose outer walls are rotatably connected to the valve body 20. The outer wall of the valve body 20 is provided with a housing 17. The bottom of the housing 17 is provided with a slide groove 18. The outer wall of the rotating shaft 16 is fixedly connected to the inner wall of the slide groove 18, so that the handle 14 can rotate around the rotating shaft 16. The rotating shaft 16 is fixed in the slide groove 18 to ensure the stability of the handle 14 during rotation. The outer walls of the two valve leaves 1 are provided with a reinforcing mechanism 2. The reinforcing mechanism 2 is used to reinforce the valve leaves 1 and prevent the valve leaves 1 from deforming or displacing.

[0035] Specifically, the airfoil design of valve blade 1 reduces airflow resistance, improves ventilation efficiency, and reduces energy consumption. The airflow can be adjusted according to actual needs to meet the requirements of different ventilation scenarios. The chuck 4 is fixedly connected to valve blade 1 and support rod 3, allowing valve blade 1 to rotate with chuck 4, thus opening and closing. Support rod 3 passes through valve body 20 and is rotatably connected to it, ensuring the correct position of valve blade 1 inside valve body 20 and providing a pivot for its rotation. Rack plate 5 meshes with chuck 4; when rack plate 5 moves, it drives chuck 4 to rotate, thereby controlling the opening and closing of valve blade 1. Horizontal plate 8 connects the bottom ends of two vertical plates 7 and is fixedly connected to push-pull plate 9, transmitting thrust and pull forces. The function of the limit rod 10 is to enable the user to control the opening and closing of the entire valve leaf system. The limit rod 10 has a fixed length and both ends extend out of the movable groove 12. It can move back and forth but cannot move up and down in cooperation with the rotating plate 11. The rotating plate 11 is connected to the outer shell 17 through the handle 14 and the rotating shaft 16 at the bottom. The user can rotate the handle 14 to drive the rotating plate 11 to rotate, thereby adjusting the position of the limit rod 10 and controlling the opening and closing state of the valve leaf 1. The outer shell 17 protects its internal components and prevents damage caused by the external environment. The sliding groove 18 at the bottom of the outer shell 17 provides a moving track for the handle 14, making the operation smoother. The reinforcing mechanism 2 is used to reinforce the valve leaf 1 to prevent the valve leaf 1 from deforming or displacing due to external forces during use.

[0036] See attached document Figure 2 Appendix Figure 6 and attached Figure 7 The reinforcement mechanism 2 includes multiple reinforcement rods 201, which play the main role of reinforcement and support. One end of each reinforcement rod 201 is fixedly connected to the outer wall of the valve leaf 1, and the other end of each reinforcement rod 201 is fixedly connected to a reinforcement plate 202. The reinforcement plate 202 forms a triangle to make the structure more stable. An extension plate 203 is fixedly connected to the outer wall of the reinforcement plate 202. A locking ring 204 is fixedly connected to the outer wall of the upper extension plate 203, and a latch 207 is fixedly connected to the outer wall of the lower extension plate 203. When the valve leaf 1 is closed, the latch 207 slides into the locking ring 204. The front end of the locking ring 204 has an upper groove 205, and the rear end of the locking ring 204 has a lower groove 206. When the valve leaf 1 is completely closed, the latch 207 is just embedded in the locking ring 204. The upper groove 205 and the lower groove 206 restrict the movement of the latch 207.

[0037] Specifically, when valve leaf 1 is closed, the reinforcing mechanism 2 can improve the structural strength of valve leaf 1, ensuring that valve leaf 1 maintains good performance and sealing effect during long-term use. In actual use, valve leaf 1 will be affected by airflow pressure and high temperature. The reinforcing plate 202 effectively enhances the structural strength of valve leaf 1 by increasing the cross-section, so that valve leaf 1 will not deform when subjected to external impact. Locking ring 204 and locking buckle 207 are locked to each other, and the upper groove 205 and lower groove 206 of locking ring 204 make locking buckle 207 and locking ring 204 combine into a whole, further enhancing the stability of valve leaf 1, improving its resistance to deformation and displacement, and ensuring that the smoke exhaust fire damper maintains good performance and sealing effect during long-term use.

[0038] See attached document Figure 1 Appendix Figure 3 and attached Figure 5 The bottom outer wall of the valve body 20 is fixedly connected to the bottom inner wall of the outer shell 17 with multiple support columns 19. The support columns 19 play a supporting and fixing role. The bottom end of the handle 14 is fixedly connected to a grip 15. The grip 15 is made of fluororubber material. The fluororubber grip 15 also has a non-slip function. Even when the hands are wet, it can ensure that the user can firmly grip the grip 15 and perform accurate operation. A sealing groove 6 is opened on the adjacent side of the two valve leaves 1. The two sealing grooves 6 are slidably connected.

[0039] Specifically, the support column 19 enhances the connection strength between the valve body 20 and the outer shell 17, ensuring the stability of the valve body 20 inside the outer shell 17 and preventing displacement or shaking of the valve body 20 during use. The handle 15 is fixed to the bottom of the handle 14 for easy operation. The fluororubber material has good heat resistance, oil resistance, and corrosion resistance, and does not deform at high temperatures. It has poor thermal conductivity and is suitable for various harsh working environments. When the valve leaf 1 is closed, the two sealing grooves 6 slide together to form a sealing structure. The design of the sealing grooves 6 can improve the sealing performance between the valve leaves 1 and prevent smoke and fire from leaking through the gaps between the valve leaves 1.

[0040] Working principle: First, under normal circumstances, the smoke exhaust fire damper is in the open state, valve leaf 1 is in the open position, and the chuck 4 and rack 5 are engaged but not moving. The positions of the movable groove 12 and the limiting groove 13 on the rotating plate 11 keep the limiting rod 10 in a relatively stable state, without pushing the push-pull plate 9 to move, allowing air to flow freely through the valve body 20. When it is necessary to close the smoke exhaust fire damper, the operator grips the handle 15 and pulls it. The handle 15 drives the handle 14 to rotate, and the handle 14 drives the rotating plate 11 to rotate forward. The rotation of plate 11 pushes the push-pull plate 9 forward, and at the same time causes the limit rod 10 to slide from the movable groove 12 to the limit groove 13. The push-pull plate 9 drives the horizontal plate 8, the vertical plate 7 and the rack plate 5 to move forward. The movement of the rack plate 5 will drive the chuck 4 that meshes with it to rotate. The rotation of the chuck 4 drives the valve leaf 1 to rotate through the support rod 3, so that the valve leaf 1 gradually closes. At this time, the limit rod 10 slides to the limit groove 13, so that the limit rod 10 is stuck in the limit groove 13, making the whole mechanism stable. When it is necessary to open the smoke exhaust fire damper, simply pull the handle 15 in the opposite direction.

[0041] Furthermore, when the smoke exhaust fire damper closes valve leaf 1, the reinforcing rod 201 distributes the force on valve leaf 1 to the reinforcing plate 202, further enhancing the structural stability. Simultaneously, the extension plate 203 extends outward, providing installation positions for the locking ring 204 and the latch 207. During the closing process, valve leaf 1 inserts the latch 207 on the lower extension plate 203 into the inner wall of the locking ring 204 on the upper extension plate 203. The upper groove 205 at the front end and the lower groove 206 at the rear end of the locking ring 204 guide and position the latch 207, ensuring accurate insertion and locking. This further secures and locks valve leaf 1. Thus, through the cooperation of the locking ring 204 and the latch 207, multiple reinforcing rods 201, reinforcing plates 202, and extension plates 203... This forms an integrated reinforced structure, which effectively improves the strength and stability of valve blade 1 and prevents valve blade 1 from being deformed or damaged by external forces such as fluid pressure during operation.

[0042] 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. An airfoil-shaped double-leaf smoke exhaust fire damper, comprising two valve leaves (1), characterized in that: Both ends of the outer walls of the two valve blades (1) are provided with chucks (4), and the outer walls of the multiple chucks (4) are meshed with rack plates (5). The rear sides of the multiple rack plates (5) are fixedly connected with vertical plates (7). The bottom ends of the two vertical plates (7) are fixedly connected with horizontal plates (8). The middle of the horizontal plates (8) is fixedly connected with a push-pull plate (9). The outer wall of the push-pull plate (9) is fixedly connected with a limit rod (10). The bottom of the limit rod (10) is provided with a rotating plate (11). The outer wall is provided with movable grooves (12) around the perimeter. The outer wall of the limiting rod (10) is slidably connected to the inner wall of the movable groove (12). Limiting grooves (13) are provided on both sides of the top of the movable groove (12). A handle (14) is fixedly connected to the bottom of the rotating plate (11). A rotating shaft (16) is rotatably connected to the inner wall of the handle (14). The outer walls of the two valve leaves (1) are provided with reinforcing mechanisms (2). The reinforcing mechanisms (2) are used to reinforce the valve leaves (1) and prevent the valve leaves (1) from deforming or displacing.

2. The airfoil-shaped double-leaf smoke exhaust fire damper according to claim 1, characterized in that: The reinforcement mechanism (2) includes multiple reinforcement rods (201). One end of each reinforcement rod (201) is fixedly connected to the outer wall of the valve leaf (1). The other end of each reinforcement rod (201) is fixedly connected to a reinforcement plate (202). An extension plate (203) is fixedly connected to the outer wall of the reinforcement plate (202). A locking ring (204) is fixedly connected to the outer wall of the upper extension plate (203). A latch (207) is fixedly connected to the outer wall of the lower extension plate (203). An upper groove (205) is provided at the front end of the locking ring (204). A lower groove (206) is provided at the rear end of the locking ring (204).

3. The airfoil-shaped double-leaf smoke exhaust fire damper according to claim 1, characterized in that: The inner walls of the two valve leaves (1) are fixedly connected with support rods (3), and the two ends of the two support rods (3) are fixedly connected to the outer wall of the cam (4).

4. The airfoil-shaped double-leaf smoke exhaust fire damper according to claim 3, characterized in that: The outer walls of both support rods (3) extend laterally through the valve body (20), and the outer walls of both support rods (3) are rotatably connected to the valve body (20).

5. The airfoil-shaped double-leaf smoke exhaust fire damper according to claim 4, characterized in that: The outer wall of the valve body (20) is provided with a shell (17), and a plurality of support columns (19) are fixedly connected to the bottom outer wall of the valve body (20) and the bottom inner wall of the shell (17).

6. The airfoil-shaped double-leaf smoke exhaust fire damper according to claim 5, characterized in that: The bottom of the outer casing (17) is provided with a sliding groove (18), and the outer wall of the rotating shaft (16) is fixedly connected to the inner wall of the sliding groove (18).

7. The airfoil-shaped double-leaf smoke exhaust fire damper according to claim 1, characterized in that: The bottom end of the handle (14) is fixedly connected to a grip (15), which is made of fluororubber.

8. The airfoil-shaped double-leaf smoke exhaust fire damper according to claim 1, characterized in that: Each of the two valve leaves (1) has a sealing groove (6) on an adjacent side, and the two sealing grooves (6) are slidably connected.

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