Ventilation duct smoke evacuation valve

Abstract

The utility model discloses a kind of ventilation pipeline smoke exhaust valve, including valve body and baffle, the bottom wall of the valve body is detachably provided with plugging plate, the top of the plugging plate and valve body is rotatably provided with rotating seat, the rotating seat is provided with limit slot, fixed shaft is inserted on the limit slot, the baffle is fixed on fixed shaft, the bottom wall of the plugging plate is provided with the driving element of the rotating seat rotation, the baffle can be blocked after rotating valve body.The utility model belongs to the technical field of pipeline smoke exhaust valve, specifically refers to a kind of ventilation pipeline smoke exhaust valve.

Description

Technical Field

[0001] This utility model belongs to the technical field of duct smoke exhaust valves, specifically referring to a ventilation duct smoke exhaust valve. Background Technology

[0002] In building fire safety systems, smoke exhaust valves in ventilation ducts are a crucial component, as their performance directly affects the effective removal of smoke and the safe evacuation of personnel during a fire.

[0003] Most smoke exhaust valves have a high degree of integration between the baffle and the valve body. When the baffle, rotating parts or other components malfunction, it is difficult to disassemble and repair them. The entire smoke exhaust valve must be removed from the ventilation duct, which is not only cumbersome to operate, but also consumes a lot of manpower and time. Utility Model Content

[0004] The technical problem this invention aims to solve is that most smoke exhaust valves have a high degree of integration between the baffle and the valve body structure, making it difficult to disassemble and repair when the baffle, rotating parts, etc., malfunction.

[0005] To achieve the above functions, the technical solution adopted by this utility model is as follows: a ventilation duct smoke exhaust valve includes a valve body and a baffle. The bottom wall of the valve body is detachably provided with a sealing plate. The top of the sealing plate and the valve body are both rotatably provided with a rotating seat. The rotating seat is provided with a limiting groove. A fixed shaft is inserted into the limiting groove. The baffle is fixed on the fixed shaft. The bottom wall of the sealing plate is provided with a driving component that drives the rotating seat to rotate. After the baffle rotates, it can seal the valve body.

[0006] Preferably, the outer wall of the fixed shaft is provided with a plurality of limiting strips, and the limiting groove is matched with the fixed shaft.

[0007] Preferably, the bottom of the side wall of the valve body is provided with an extension plate, and the ends of the extension plate and the sealing plate are provided with grooves. A stud is provided on the groove of the sealing plate through a shaft. The top of the stud is inserted into the groove of the extension plate. A nut is threadedly connected to the stud, and the nut is pressed against the extension plate.

[0008] Preferably, the rotating seat is provided in two sets, with multiple fixed shafts and baffles corresponding to it.

[0009] Preferably, the driving component includes an electric telescopic rod, with two rotating seats on the sealing plate rotatably penetrating through the sealing plate at their bottom ends. A connecting plate is fixed on the extended end of the rotating seat, and a connecting rod is provided between the ends of the two connecting plates. An extended plate extends from one of the connecting plates. The fixed end of the electric telescopic rod is rotatably mounted on the sealing plate via a shaft, and the movable end of the electric telescopic rod is rotatably connected to the end of the extended plate via a shaft.

[0010] Preferably, a mounting plate is provided on one side of the valve body, a smoke sensor is provided near the inner wall of the valve body, a controller is provided on the bottom wall of the sealing plate, and the smoke sensor and the electric telescopic rod are both electrically connected to the controller.

[0011] The beneficial effects achieved by adopting the above-described structure are as follows:

[0012] 1. By installing a removable sealing plate on the bottom wall of the valve body, when maintenance is required on components such as the fixed shaft and baffle, simply loosen the nut and unscrew the stud from the groove of the extension plate to remove the sealing plate, thereby facilitating the removal or installation of the baffle, which improves maintenance efficiency and reduces maintenance costs.

[0013] 2. The limiting strip on the outer wall of the fixed shaft matches the limiting groove of the rotating seat, ensuring that the fixed shaft can rotate stably with the rotating seat and avoiding loosening and deviation during the transmission process.

[0014] 3. The smoke sensor installed on one side of the valve body is electrically connected to the controller on the bottom wall of the sealing plate and the electric telescopic rod. When the smoke sensor detects smoke, it can transmit the signal to the controller in a timely manner. The controller quickly controls the extension and retraction of the electric telescopic rod to automatically open the baffle for smoke exhaust. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0016] Figure 2 This is a side view of the rotating seat according to an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 1 ;

[0018] Figure 4 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 2 ;

[0019] Figure 5 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 3 .

[0020] The components are as follows: 1. Valve body, 2. Baffle, 3. Sealing plate, 4. Rotating seat, 5. Limiting groove, 6. Fixed shaft, 7. Driving component, 8. Limiting strip, 9. Extension plate, 10. Groove, 11. Stud, 12. Nut, 13. Electric telescopic rod, 14. Connecting plate, 15. Connecting rod, 16. Extending plate, 17. Mounting plate, 18. Smoke sensor, 19. Controller. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] like Figure 1-5 As shown, the present invention proposes a ventilation duct smoke exhaust valve, including a valve body 1 and a baffle 2. The bottom wall of the valve body 1 is detachably provided with a sealing plate 3. The top of both the sealing plate 3 and the valve body 1 is rotatably provided with a rotating seat 4. The rotating seat 4 is provided with a limiting groove 5, and a fixed shaft 6 is inserted into the limiting groove 5. The baffle 2 is fixed on the fixed shaft 6. The bottom wall of the sealing plate 3 is provided with a driving component 7 that drives the rotating seat 4 to rotate. After the baffle 2 rotates, it can seal the valve body 1. The rotating seat 4 is provided in two sets, with multiple fixed shafts 6 and baffles 2 corresponding to it. The detachable sealing plate 3 makes it easy to install and remove the fixed shafts 6 and baffles 2 for maintenance.

[0024] like Figure 3 As shown, the outer wall of the fixed shaft 6 is provided with several limiting strips 8, and the limiting groove 5 is matched with the fixed shaft 6. The limiting strips 8 and the limiting fixed shaft 6 rotate with the rotating seat 4.

[0025] like Figure 3-4 As shown, the valve body 1 has an extension plate 9 at the bottom of its side wall. Both the extension plate 9 and the sealing plate 3 have grooves 10 at their ends. A stud 11 is rotatably mounted on the groove 10 of the sealing plate 3 via a shaft. The top of the stud 11 is inserted into the groove 10 of the extension plate 9. A nut 12 is threaded onto the stud 11. The nut 12 is pressed against the extension plate 9. By loosening the nut 12, the stud 11 can be unscrewed from the groove 10 of the extension plate 9 to remove the sealing plate 3 and remove or install the baffle 2 for maintenance.

[0026] like Figure 5As shown, the driving component 7 includes an electric telescopic rod 13. The bottom ends of two rotating seats 4 on the sealing plate 3 are rotatably disposed through the sealing plate 3. A connecting plate 14 is fixed on the extended end of the rotating seat 4. A connecting rod 15 is provided between the ends of the two connecting plates. An extension plate 16 extends from one of the connecting plates 14. The fixed end of the electric telescopic rod 13 is rotatably disposed on the sealing plate 3 via a shaft. The movable end of the electric telescopic rod 13 is rotatably connected to the end of the extension plate 16 via a shaft. When the electric telescopic rod 13 extends and retracts, it can drive the connecting plate 14 to rotate through the extension plate 16. The two connecting plates 14 move synchronously through the connecting rod 15. The connecting plate 14 drives the rotating seat 4, the fixed shaft 6, and the baffle 2 to rotate, so as to block or open the valve body 1.

[0027] like Figure 4 As shown, a mounting plate 17 is provided on one side of the valve body 1, and a smoke sensor 18 is provided near the inner side wall of the valve body 1. A controller 19 is provided on the bottom wall of the sealing plate 3. The smoke sensor 18 and the electric telescopic rod 13 are both electrically connected to the controller 19. When a fire occurs, smoke will quickly spread in the ventilation duct. When the smoke sensor 18 detects smoke, the controller 19 controls the electric telescopic rod 13 to extend and retract, sealing the valve body 1 in time to prevent the smoke from spreading to other areas.

[0028] In practical use, the smoke exhaust valve is fixedly installed at a predetermined position in the ventilation duct using the mounting plate 17 on one side of the valve body 1.

[0029] When a fire occurs, smoke will quickly fill the ventilation duct. When the smoke sensor 18 detects that the smoke concentration in the ventilation duct has reached a preset threshold, it immediately transmits a signal to the controller 19. After receiving the signal, the controller 19 quickly issues a command to start the electric telescopic rod 13. The electric telescopic rod 13 extends and retracts, driving the connecting plate 14 to rotate through the extension plate 16. The two connecting plates 14 move synchronously under the action of the connecting rod 15, thereby driving the rotating seat 4, the fixed shaft 6 and the baffle 2 to rotate, so that the baffle 2 quickly seals the valve body 1 and prevents it from spreading to other areas.

[0030] When maintenance of the exhaust valve is required, loosen the nut 12 and unscrew the stud 11 from the groove 10 of the extension plate 9 to remove the sealing plate 3. At this time, the fixed shaft 6 and the baffle 2 can be easily removed or installed for inspection, repair or replacement. After maintenance is completed.

[0031] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A smoke exhaust valve for a ventilation duct, comprising a valve body (1) and a baffle (2), characterized in that: The bottom wall of the valve body (1) is detachably provided with a sealing plate (3). The top of the sealing plate (3) and the valve body (1) are both provided with a rotating seat (4). The rotating seat (4) is provided with a limiting groove (5). A fixed shaft (6) is inserted into the limiting groove (5). The baffle (2) is fixed on the fixed shaft (6). The bottom wall of the sealing plate (3) is provided with a driving component (7) that drives the rotating seat (4) to rotate. After the baffle (2) rotates, it can seal the valve body (1).

2. The smoke exhaust valve for a ventilation duct according to claim 1, characterized in that: The outer wall of the fixed shaft (6) is provided with several limiting strips (8), and the limiting groove (5) is matched with the fixed shaft (6).

3. The smoke exhaust valve for a ventilation duct according to claim 1, characterized in that: The valve body (1) has an extension plate (9) at the bottom of its side wall. Both the extension plate (9) and the sealing plate (3) have grooves (10) at their ends. A stud (11) is provided on the groove (10) of the sealing plate (3) via a shaft. The top of the stud (11) is inserted into the groove (10) of the extension plate (9). A nut (12) is threaded onto the stud (11). The nut (12) is pressed against the extension plate (9).

4. A smoke exhaust valve for a ventilation duct according to claim 1, characterized in that: The rotating seat (4) is provided in two sets, and the fixed shaft (6) and baffle (2) are provided accordingly.

5. A smoke exhaust valve for a ventilation duct according to claim 1, characterized in that: The driving component (7) includes an electric telescopic rod (13). The bottom ends of two rotating seats (4) on the sealing plate (3) are rotatably connected through the sealing plate (3). A connecting plate (14) is fixed on the extended end of the rotating seat (4). A connecting rod (15) is provided between the ends of the two connecting plates (14). An extension plate (16) extends from one of the connecting plates (14). The fixed end of the electric telescopic rod (13) is rotatably mounted on the sealing plate (3) via a shaft. The movable end of the electric telescopic rod (13) is rotatably connected to the end of the extension plate (16) via a shaft.

6. A smoke exhaust valve for a ventilation duct according to claim 1, characterized in that: The valve body (1) has an installation plate (17) on one side, a smoke sensor (18) on the inner wall of the valve body (1), and a controller (19) on the bottom wall of the sealing plate (3). The smoke sensor (18) and the electric telescopic rod (13) are both electrically connected to the controller (19).

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