Fire-fighting 70-degree-celsius melting smoke exhaust fire valve

Abstract

The utility model belongs to the technical field of smoke exhaust fire damper, especially 70 DEG C fuse smoke exhaust fire damper for fire fighting, including valve frame, the valve frame bottom inner wall rotatory joint has the rotating shaft, and the outer wall of rotating shaft is welded with fireproof plate, the rotating shaft top outer wall is installed with handle, the valve frame top outer wall is connected with gear box through screw, and the gear box one side inner wall is welded with connecting plate, the connecting plate top outer wall is fixedly connected with spring, and the spring top outer wall is fixedly connected with wedge block. The utility model discloses the installation frame of fireproof plate one side outer wall is set up 70 DEG C fuse sensor, and the controller controls servo motor to start, can prevent smoke spreading in time, has solved the problem that the existing valve temperature monitoring is not accurate, closes not in time, the observation window of valve frame top installation, the staff is convenient for observing the inside situation of valve at any time, and the inside parts are maintained through the overhaul opening, have solved the problem that the existing valve structure is not reasonable, and the overhaul is inconvenient.

Description

Technical Field

[0001] This utility model relates to the technical field of smoke exhaust fire dampers, and in particular to a 70°C fusion-break smoke exhaust fire damper for fire protection. Background Technology

[0002] In building fire protection systems, smoke exhaust fire dampers are valves installed on the supply and return air ducts of ventilation and air conditioning systems. Normally open, they close when the smoke temperature inside the duct reaches 70°C during a fire. They meet the requirements for fire resistance stability and integrity for a certain period, serving as smoke and fire barriers. They can be closed manually or electrically and are commonly used on air ducts in ventilation and air conditioning systems.

[0003] However, there are some shortcomings in actual use:

[0004] Existing smoke exhaust fire dampers are not accurate enough in terms of temperature monitoring. When the ambient temperature reaches 70℃, they cannot close in a timely and accurate manner, which may lead to the spread of fire.

[0005] Furthermore, its structural design is not reasonable enough, and it is prone to failure during long-term use. It is also inconvenient to repair and maintain, which affects the normal operation of the fire protection system. Utility Model Content

[0006] In view of the shortcomings of the prior art, this utility model provides a 70℃ fusible smoke exhaust fire damper for fire protection, which overcomes the shortcomings of the prior art and effectively solves the problems of not being able to make a timely and accurate closing response and inconvenient maintenance.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A fire-fighting 70°C fusible smoke exhaust fire damper includes a valve frame, a rotating shaft rotatably connected to the bottom inner wall of the valve frame, a fireproof plate welded to the outer wall of the rotating shaft, a handle installed on the top outer wall of the rotating shaft, a gearbox connected to the top outer wall of the valve frame by screws, a connecting plate welded to the inner wall of one side of the gearbox, a spring fixedly connected to the top outer wall of the connecting plate, and a wedge block fixedly connected to the top outer wall of the spring, the wedge block being tightly attached to the outer wall of one side of the handle;

[0009] An observation window is installed on the top outer wall of the valve frame, and an inspection port is opened on one side of the outer wall of the valve frame. A guide plate is welded to the side of the outer wall of the valve frame located at the inspection port, and a sealing plate is slidably connected to the inner wall of the guide plate.

[0010] Preferably, a passive gear is installed on the top of the outer wall of the handle, and a drive gear meshes on the outer wall of the passive gear, and a servo motor is installed on the bottom outer wall of the drive gear.

[0011] Preferably, the passive gear, the drive gear, and the servo motor are all located inside the gearbox.

[0012] Preferably, an installation frame is welded to one side of the outer wall of the fireproof board, and a 70°C fusible sensor is installed on the inner wall of the installation frame. The 70°C fusible sensor is located on one side of the inspection port.

[0013] Preferably, the top outer wall of the valve frame is fixedly connected to a controller by screws, and the controller is connected to the servo motor and the 70°C fuse sensor by a signal line.

[0014] Preferably, strip baffles are welded to the inner walls of both sides of the valve frame on both sides of the fireproof plate.

[0015] Preferably, a smoke inlet pipe is fixedly connected to one outer wall of the valve frame via a flange, and a smoke exhaust pipe is fixedly connected to the other outer wall of the valve frame via a flange.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. The fire-fighting 70℃ fusible smoke exhaust fire damper designed in this paper uses a 70℃ fusible sensor installed in the mounting frame on the outer wall of one side of the fireproof board. When the ambient temperature reaches 70℃, the 70℃ fusible sensor can quickly sense it and transmit the signal to the controller. The controller controls the servo motor to start, which drives the drive gear to rotate. The drive gear meshes with the driven gear, thereby rotating the rotating shaft and driving the fireproof board to close, thus preventing the spread of smoke in time. This solves the problems of inaccurate temperature monitoring and untimely closing of existing valves.

[0018] 2. The fire-fighting 70℃ fusible smoke exhaust fire damper designed in this paper has an observation window installed on the top of the valve frame, which allows staff to observe the internal condition of the valve at any time. The maintenance port opened on one side of the valve frame, together with the guide plate and the sealing plate, allows the sealing plate to be slid open when maintenance is required, so that the internal parts can be maintained through the maintenance port. This solves the problems of unreasonable valve structure and inconvenient maintenance in the existing valve. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a 70℃ fusible smoke exhaust fire damper for fire protection proposed in this utility model.

[0020] Figure 2 A schematic diagram of the valve frame connection structure of a 70°C fusible link smoke exhaust fire damper for fire protection proposed in this utility model. Figure 1 ;

[0021] Figure 3 A schematic diagram of the valve frame connection structure of a 70°C fusible link smoke exhaust fire damper for fire protection proposed in this utility model. Figure 2 ;

[0022] Figure 4A schematic diagram of the internal structure of the valve frame of a 70℃ fusible smoke exhaust fire damper for fire protection proposed in this utility model;

[0023] Figure 5 for Figure 4 An enlarged structural diagram.

[0024] In the diagram: 1. Valve frame; 2. Rotating shaft; 3. Fireproof plate; 4. Driven gear; 5. Handle; 6. Connecting plate; 7. Spring; 8. Wedge block; 9. Observation window; 10. Inspection port; 11. Guide plate; 12. Sealing plate; 13. Drive gear; 14. Servo motor; 15. Gearbox; 16. Controller; 17. Mounting frame; 18. 70℃ fuse sensor; 19. Strip baffle; 20. Smoke inlet pipe; 21. Smoke exhaust pipe. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Reference Figures 1-5 Example 1: A 70°C fusible smoke exhaust fire damper for fire protection includes a valve frame 1. A rotating shaft 2 is rotatably connected to the bottom inner wall of the valve frame 1, and a fireproof plate 3 is welded to the outer wall of the rotating shaft 2. A handle 5 is installed on the top outer wall of the rotating shaft 2. A gearbox 15 is connected to the top outer wall of the valve frame 1 by screws, and a connecting plate 6 is welded to the inner wall of one side of the gearbox 15. A spring 7 is fixedly connected to the top outer wall of the connecting plate 6, and a wedge block 8 is fixedly connected to the top outer wall of the spring 7. The wedge block 8 is tightly attached to the outer wall of one side of the handle 5.

[0027] A passive gear 4 is installed on the top of the outer wall of the handle 5, and a drive gear 13 meshes on the outer wall of the passive gear 4. A servo motor 14 is installed on the bottom outer wall of the drive gear 13. The passive gear 4, the drive gear 13 and the servo motor 14 are all located inside the gearbox 15.

[0028] The rotating shaft 2 supports the fireproof plate 3 and enables it to rotate. The handle 5 facilitates manual operation of the valve, and the gearbox 15 protects the internal transmission components. The connecting plate 6 and the spring 7 provide support and elasticity for the wedge block 8, allowing the wedge block 8 to fit tightly against the handle 5, thus providing a certain limiting effect. The servo motor 14 serves as the power source, driving the rotating shaft 2 to rotate through the meshing transmission of the drive gear 13 and the driven gear 4, thereby controlling the opening and closing of the fireproof plate 3.

[0029] In this embodiment, a 70°C fusible sensor 18 is installed in the mounting frame 17 on the outer wall of one side of the fireproof plate 3. When the ambient temperature reaches 70°C, the 70°C fusible sensor 18 can quickly sense and transmit the signal to the controller 16. The controller 16 controls the servo motor 14 to start, which drives the drive gear 13 to rotate. The drive gear 13 meshes with the passive gear 4, thereby causing the rotating shaft 2 to rotate and drive the fireproof plate 3 to close, thus preventing the spread of smoke in time. This solves the problems of inaccurate temperature monitoring and untimely closing of existing valves.

[0030] In embodiment 2, an observation window 9 is installed on the top outer wall of the valve frame 1, and an inspection port 10 is opened on one side of the outer wall of the valve frame 1. A guide plate 11 is welded to one side of the outer wall of the valve frame 1 located on the side of the inspection port 10, and a sealing plate 12 is slidably connected to the inner wall of the guide plate 11. An installation frame 17 is welded to one side of the outer wall of the fireproof plate 3, and a 70°C fusible sensor 18 is installed on the inner wall of the installation frame 17. The 70°C fusible sensor 18 is located on one side of the inspection port 10.

[0031] The observation window 9 is made of transparent material, allowing staff to check the condition of the fireproof plate 3 and whether the internal parts are functioning properly. The access port 10 facilitates internal valve maintenance, and the guide plate 11 guides the sliding of the sealing plate 12, ensuring that the sealing plate 12 can accurately open or close the access port 10. The mounting frame 17 secures the 70°C fusible sensor 18, enabling it to accurately monitor ambient temperature.

[0032] In this embodiment, the observation window 9 installed on the top of the valve frame 1 allows staff to observe the internal condition of the valve at any time. The maintenance port 10 opened on one side of the valve frame 1, together with the guide plate 11 and the sealing plate 12, allows the sealing plate 12 to be slid open when maintenance is required, and the internal parts can be maintained through the maintenance port 10, thus solving the problems of unreasonable valve structure and inconvenient maintenance in the existing valve.

[0033] The top outer wall of the valve frame 1 is fixedly connected to the controller 16 by screws, and the controller 16 is connected to the servo motor 14 and the 70°C fuse sensor 18 by signal lines.

[0034] The controller 16 acts as the control center, receiving the signal from the 70°C fuse sensor 18 and controlling the action of the servo motor 14.

[0035] The inner walls of the valve frame 1 on both sides are welded with strip baffles 19 on both sides of the fireproof plate 3.

[0036] The strip baffle 19 works in conjunction with the fireproof plate 3 to enhance the sealing performance of the valve.

[0037] The outer wall of the valve frame 1 is fixedly connected to a smoke inlet pipe 20 via a flange, and the outer wall of the other side of the valve frame 1 is fixedly connected to a smoke exhaust pipe 21 via a flange.

[0038] The inlet pipe 20 and the outlet pipe 21 are used to connect the source of flue gas and the exhaust channel, respectively, so that the flue gas can pass smoothly through the valve.

[0039] Working principle: Under normal conditions, the fireproof plate 3 of this 70℃ fusible smoke exhaust fire damper is open during operation. Smoke enters through the smoke inlet pipe 20, passes through the inside of the valve frame 1, and is discharged through the smoke exhaust pipe 21. At this time, the 70℃ fusible sensor 18 monitors the ambient temperature in real time and transmits the temperature signal to the controller 16.

[0040] When the ambient temperature reaches 70℃, the 70℃ fuse sensor 18 senses the temperature change and transmits the signal to the controller 16. The controller 16 then issues a command to start the servo motor 14. The servo motor 14 drives the drive gear 13 to rotate, and the drive gear 13 meshes with the driven gear 4, causing the driven gear 4 to rotate. This, in turn, drives the rotating shaft 2 to rotate, and the fireproof plate 3 on the rotating shaft 2 rotates accordingly, gradually closing the passage of the valve frame 1 and preventing the smoke from continuing to flow.

[0041] During the rotation of the fireproof plate 3, the wedge block 8, under the elastic force of the spring 7, presses tightly against the handle 5, providing a certain limiting effect on the handle 5 and ensuring that the fireproof plate 3 can close accurately. At the same time, staff can check the closed status of the fireproof plate 3 through the observation window 9.

[0042] If valve maintenance is required, the sealing plate 12 can be slid open to inspect and maintain internal components such as the 70°C fusible sensor 18 and servo motor 14 through the inspection port 10. After maintenance, close the sealing plate 12 to ensure the valve's sealing performance.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fire-fighting 70°C fusible smoke exhaust fire damper, comprising a valve frame (1), characterized in that, The valve frame (1) is rotatably connected to the bottom inner wall of a rotating shaft (2), and a fireproof plate (3) is welded to the outer wall of the rotating shaft (2). A handle (5) is installed on the top outer wall of the rotating shaft (2). A gearbox (15) is connected to the top outer wall of the valve frame (1) by screws. A connecting plate (6) is welded to the inner wall of one side of the gearbox (15). A spring (7) is fixedly connected to the top outer wall of the connecting plate (6), and a wedge block (8) is fixedly connected to the top outer wall of the spring (7). The wedge block (8) is tightly attached to the outer wall of one side of the handle (5). An observation window (9) is installed on the top outer wall of the valve frame (1), and an inspection port (10) is opened on one side of the outer wall of the valve frame (1). A guide plate (11) is welded on one side of the outer wall of the valve frame (1) located on the side of the inspection port (10), and a sealing plate (12) is slidably connected on the inner wall of the guide plate (11).

2. The fire-fighting 70℃ fusible link smoke exhaust fire damper according to claim 1, characterized in that, A passive gear (4) is installed on the top of the outer wall of the handle (5), and a drive gear (13) meshes on the outer wall of the passive gear (4). A servo motor (14) is installed on the bottom outer wall of the drive gear (13).

3. A 70°C fusible link smoke exhaust fire damper for fire protection according to claim 2, characterized in that, The passive gear (4), drive gear (13) and servo motor (14) are all located inside the gearbox (15).

4. A 70°C fusible link smoke exhaust fire damper for fire protection according to claim 1, characterized in that, The fireproof board (3) has an installation frame (17) welded to one side of its outer wall, and a 70°C fuse sensor (18) is installed on the inner wall of the installation frame (17). The 70°C fuse sensor (18) is located on one side of the inspection port (10).

5. A 70°C fusible link smoke exhaust fire damper for fire protection according to claim 1, characterized in that, The top outer wall of the valve frame (1) is fixedly connected to a controller (16) by screws, and the controller (16) is connected to the servo motor (14) and the 70°C fuse sensor (18) by signal lines.

6. A 70°C fusible link smoke exhaust fire damper for fire protection according to claim 1, characterized in that, The inner walls of the valve frame (1) are welded with strip baffles (19) on both sides of the fireproof plate (3).

7. A fire-fighting 70°C fusible link smoke exhaust fire damper according to claim 1, characterized in that, The valve frame (1) has a flue pipe (20) fixedly connected to one outer wall via a flange, and a flue pipe (21) fixedly connected to the other outer wall via a flange.

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