A fireproof air valve

Abstract

This utility model discloses a fireproof air valve, including an air valve frame. Multiple blades are arranged vertically within the air valve frame. Square shafts are fixed to both ends of the blades, and the square shafts of the multiple blades are connected by a linkage mechanism. A boss is fixed to the end of the square shaft of one blade, and a pointer is provided on the side of the boss. A cover plate is fitted onto the side of the air valve frame, and the surface of the cover plate has graduation lines. The boss penetrates through the cover plate, and the pointer is located on one side of the graduation lines on the cover plate. Rotating the blades causes the pointer to rotate, so that the pointer points to the corresponding graduation line. This utility model, by setting graduation lines and a pointer on the outside of the air valve frame, allows for easy observation of the blade rotation angle from the outside, as the rotation of the blades causes the pointer to rotate and point to the corresponding graduation line.

Description

Technical Field

[0001] This utility model relates to a damper, and more specifically, to a fireproof damper. Background Technology

[0002] A fire damper is a device used to prevent the spread of fire. It is usually connected to the ventilation ducts of a building. It can automatically close the ventilation ducts when a fire occurs to prevent the fire from spreading further and reduce the damage caused by smoke.

[0003] Because fireproof dampers are connected to pipes, the position of the blades cannot be known from the outside, and therefore the opening and closing status and angle of the blades cannot be known. Therefore, there is an urgent need to improve this. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a fireproof air valve. By setting scale lines and pointers on the outside of the air valve frame, the pointer will rotate and point to the corresponding scale line when the blades rotate, thus making it easy to observe the rotation angle of the blades from the outside.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a fireproof air valve, comprising an air valve frame, wherein multiple blades are arranged vertically within the air valve frame, and square shafts are fixed at both ends of the multiple blades. The square shafts of the multiple blades are connected by a linkage mechanism. A boss is fixed at the end of the square shaft of one blade, and a pointer is provided on the side of the boss. A cover plate is covered on the side of the air valve frame, and scale lines are provided on the surface of the cover plate. The boss penetrates through the cover plate, and the pointer is located on one side of the scale lines on the cover plate. Rotating the blades can drive the pointer to rotate so that the pointer points to the corresponding scale.

[0006] Furthermore, the number of blades shown is two, and the lower end of each blade has a notch, so that the upper end of the lower blade can be inserted into the notch of the upper blade.

[0007] Furthermore, the blade is olive-shaped and hollow inside.

[0008] Furthermore, a baffle bar is fixed on the bottom surface inside the air valve frame along its length, and the side of the blade located below can abut against or detach from the baffle bar.

[0009] Furthermore, a pipe is fixed to the top surface inside the air valve frame, and the pipe and the baffle are located on the same side, and the side of the blade located above can abut against or detach from the pipe.

[0010] Furthermore, one end of the pipe penetrates the side of the air valve frame, and the area inside the air valve frame of the pipe is provided with multiple water outlets arranged along its length, with the water outlets located on the side of the pipe away from the blades.

[0011] Furthermore, the top and bottom surfaces of the air valve frame are equipped with guide rails. The pipe is fixed in the upper guide rail, and the baffle is fixed in the lower guide rail. The fixing method of the baffle to the guide rail is the same as the fixing method of the pipe to the guide rail.

[0012] Furthermore, the guide rail includes a first limiting groove and a second limiting groove, a connecting strip is provided on the side of the pipe, and limiting ribs are provided on both sides of the connecting strip. The connecting strip passes through the second limiting groove, and the limiting ribs are located within the first limiting groove for limiting.

[0013] Furthermore, the two blades are connected by a linkage mechanism, which includes a first link fixedly connected to a square shaft, and the first links of the two square shafts are hinged by a second link.

[0014] In summary, this utility model has the following beneficial effects:

[0015] 1. Rotating the blade can drive the pointer to rotate so that the pointer points to the corresponding scale. By setting the scale line and pointer on the outside of the air valve frame, the rotation of the blade will drive the pointer to rotate and point to the corresponding scale, thus making it easy to observe the rotation angle of the blade from the outside.

[0016] 2. A digital display can also be installed on the outside of the cover plate, and a position sensor can be installed inside the air valve frame. When the blades rotate, the position sensor will be triggered to work and the corresponding angle value will be displayed on the digital display for easy observation. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of this embodiment from a first-view perspective;

[0018] Figure 2 This is a structural schematic diagram of this embodiment from a second perspective;

[0019] Figure 3 This is a cross-sectional view of this embodiment;

[0020] Figure 4 for Figure 3 Enlarged view at point A.

[0021] Reference numerals in the attached drawings: 1. Air valve frame; 11. Guide rail; 12. First limiting groove; 13. Second limiting groove; 2. Blade; 21. Notch; 3. Square shaft; 31. Boss; 32. Pointer; 4. Linkage mechanism; 41. First connecting rod; 42. Second connecting rod; 5. Cover plate; 51. Scale line; 6. Pipe; 61. Water outlet; 7. Baffle; 8. Connecting strip; 81. Limiting rib; 9. Digital display. Detailed Implementation

[0022] 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.

[0023] like Figures 1 to 4 As shown, this embodiment discloses a fireproof air damper, including an air damper frame 1. The air damper frame 1 has multiple blades 2 arranged vertically. The two ends of the multiple blades 2 are fixed with square shafts 3. The square shafts 3 of the multiple blades 2 are connected by a linkage mechanism 4. Specifically, the number of blades 2 shown is two. The two blades 2 are connected by the linkage mechanism 4. The linkage mechanism 4 is the prior art. The linkage mechanism 4 includes a first connecting rod 41 fixedly connected to the square shaft 3. The first connecting rods 41 of the two square shafts 3 are hinged by a second connecting rod 42. By setting the linkage mechanism 4, the rotation of the two blades 2 can be driven synchronously, thereby opening or closing the fireproof air damper.

[0024] like Figure 2 As shown, a driver (not shown in the figure) is externally connected to the square shaft 3 located below. The driver drives the first connecting rod 41 located below to rotate counterclockwise. The blade 2 located below rotates counterclockwise and opens synchronously. The first connecting rod 41 pushes the second connecting rod 42 to rise. During the rising process, the second connecting rod 42 pushes the first connecting rod 41 located above to rotate clockwise, thereby opening the blade 2 located above. The rotation angle of the two blades 2 is 90 degrees.

[0025] like Figure 3 As shown, the lower end of the blade 2 is provided with a notch 21, and the upper end of the lower blade 2 can be inserted into the notch 21 of the upper blade 2. By setting the notch 21, the gear-like engagement of the two blades 2 can be achieved, which can improve the closing effect of the two blades 2 when the fireproof damper is closed, and greatly reduce the passage of smoke.

[0026] Furthermore, the blade 2 is olive-shaped and hollow inside. The olive-shaped hollow structure not only improves the structural strength of the blade 2, but also effectively reduces heat conduction and prevents the fire from spreading further.

[0027] like Figure 3As shown, a baffle 7 is fixed on the bottom surface of the inner side of the air valve frame 1 along its length. The side of the blade 2 located below can abut against or detach from the baffle 7. A pipe 6 is fixed on the top surface of the inner side of the air valve frame 1. The pipe 6 and the baffle 7 are located on the same side. The side of the blade 2 located above can abut against or detach from the pipe 6. In this embodiment, the ventilation direction is from left to right. When the fire valve is closed, the right side of the upper blade 2 abuts against the side of the pipe 6, and the right side of the lower blade 2 abuts against the side of the baffle 7, thereby greatly improving the fire prevention effect.

[0028] One end of the pipe 6 penetrates the side of the damper frame 1, and the outlet end connects to an external water supply pipe. The other end is a closed end. Multiple water outlets 61 are arranged along the length of the pipe 6 within the damper frame 1. These water outlets 61 are located on the side of the pipe 6 away from the blades 2. Figure 3 As shown, the ventilation direction implemented in this device is from left to right. Therefore, the area where the fire occurs is on the left side of the fire damper. When a fire occurs, the external water supply pipe is opened to supply water to pipe 6. The water in pipe 6 is sprayed from the outlet 61 onto the right side of blade 2, thereby cooling blade 2. This method can cool the fire damper and improve the fire prevention effect. Since not all fires can be extinguished with water, the outlet 61 is set on the right side. The sprayed water droplets fall to the bottom of the damper frame 1 and are blocked by the baffle 7, which can prevent water from entering the left side pipe of the fire damper.

[0029] Furthermore, the top and bottom surfaces of the air valve frame 1 are both equipped with guide rails 11. The pipe 6 is fixed in the upper guide rail 11, and the baffle 7 is fixed in the lower guide rail 11. The fixing method of the baffle 7 to the guide rail 11 is the same as that of the pipe 6 to the guide rail 11. Specifically, the guide rail 11 includes a first limiting groove 12 and a second limiting groove 13. The pipe 6 is provided with a connecting strip 8 on its side. The connecting strip 8 is provided with limiting ribs 81 on both sides. The connecting strip 8 passes through the second limiting groove 13, and the limiting ribs 81 are located in the first limiting groove 12 for limiting. The air valve frame 1 is composed of two horizontally arranged frame plates and two vertically arranged frame plates. The guide rail 11 is located on the surface of the horizontally arranged frame plates. After the pipe 6 and the baffle 7 are both assembled with the guide rail 11, the horizontal frame plates and the vertical frame plates are welded and fixed. By setting the guide rail 11, the installation and fixing of the pipe 6 and the baffle 7 can be realized.

[0030] like Figure 1As shown, a boss 31 is fixed to the end of the square shaft 3 of one of the blades 2. The blade 2 is the upper blade. A pointer 32 is provided on the side of the boss 31. A cover plate 5 is covered on the side of the air valve frame 1. The surface of the cover plate 5 is provided with scale lines 51. The boss 31 penetrates the cover plate 5. The pointer 32 is located on one side of the scale line 51 on the cover plate 5. Rotating the blade 2 can drive the pointer 32 to rotate so that the pointer 32 points to the corresponding scale. By setting the scale line 51 and the pointer 32 on the outside of the air valve frame 1, when the blade 2 rotates, it will drive the pointer 32 to rotate and point to the corresponding scale, so that the rotation angle of the blade 2 can be easily observed from the outside.

[0031] A digital display 9 can be installed on the outside of the cover plate 5, and a position sensor (not shown in the figure) can be installed inside the air valve frame 1. When the blade 2 rotates, the position sensor will be triggered to work and the corresponding angle value will be displayed on the digital display 9 for easy observation. The digital display 9 and the position sensor are existing technologies, and their specific structures and principles will not be described in detail in this specification.

[0032] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A fire damper air valve characterized by, The device includes a damper frame (1), which contains multiple blades (2) arranged vertically. Each blade (2) has a square shaft (3) fixed at both ends. The square shafts (3) of the multiple blades (2) are connected by a linkage mechanism (4). A boss (31) is fixed at the end of the square shaft (3) of one blade (2). A pointer (32) is provided on the side of the boss (31). A cover plate (5) is covered on the side of the damper frame (1). A scale line (51) is provided on the surface of the cover plate (5). The boss (31) penetrates the cover plate (5). The pointer (32) is located on one side of the scale line (51) of the cover plate (5). Rotating the blade (2) can drive the pointer (32) to rotate so that the pointer (32) points to the corresponding scale.

2. A fire damper according to claim 1, characterised in that The number of blades (2) shown is two. The lower end of the blade (2) is provided with a notch (21). The upper end of the lower blade (2) can be inserted into the notch (21) of the upper blade (2).

3. A fire damper according to claim 2, wherein The blade (2) is olive-shaped and hollow inside.

4. A fire damper according to claim 2, wherein The bottom surface of the air valve frame (1) is fixed with a baffle (7) arranged along its length, and the side of the blade (2) located below can abut or detach from the baffle (7).

5. A fire damper according to claim 4, wherein the fire damper is configured to be mounted in a wall of a building. The top surface inside the air valve frame (1) is fixed with a pipe (6), the pipe (6) and the baffle (7) are located on the same side, and the side of the blade (2) located above can abut or detach from the pipe (6).

6. A fire damper according to claim 5, wherein One end of the pipe (6) penetrates the side of the air valve frame (1). The area inside the air valve frame (1) of the pipe (6) is provided with multiple water outlets (61) arranged along its length. The water outlets (61) are located on the side of the pipe (6) away from the blade (2).

7. A fire damper according to claim 6, wherein The air valve frame (1) is provided with guide rails (11) on both the top and bottom surfaces. The pipe (6) is fixed in the upper guide rail (11), and the baffle (7) is fixed in the lower guide rail (11). The fixing method of the baffle (7) and the guide rail (11) is the same as the fixing method of the pipe (6) and the guide rail (11).

8. A fire damper according to claim 7, wherein The guide rail (11) includes a first limiting groove (12) and a second limiting groove (13). The pipe (6) is provided with a connecting strip (8) on its side. The connecting strip (8) is provided with limiting ribs (81) on both sides. The connecting strip (8) passes through the second limiting groove (13). The limiting ribs (81) are located in the first limiting groove (12) for limiting.

9. A fire damper according to claim 2, wherein The two blades (2) are connected by a linkage mechanism (4), which includes a first link (41) fixedly connected to a square shaft (3), and the first link (41) of the two square shafts (3) is hinged by a second link (42).

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