High sealing vane type smoke exhaust fire damper

Abstract

The utility model discloses a kind of high sealing performance vane type smoke exhaust fire damper, belong to smoke exhaust fire damper technical field. Including valve store, the inside of valve store is provided with swing vane driven by actuating mechanism, fixed vane is fixed to the both sides of swing vane in valve store;Swing vane both sides are pressed together with fixed vane;It also includes right angle plate and edge sealing, the right angle plate is provided with two, and integrally made in fixed vane both ends form frame body, the frame body is fixed in valve store inner wall;Right angle plate is spaced apart and is provided with swing notch on;Right angle plate is provided with sealing pressure groove between swing notch, and sealing pressure groove includes the upper pressure groove and lower pressure groove of staggered punching right angle plate top surface and bottom surface;Right angle plate is provided with rotary hole body at swing notch, the sealing vane type smoke exhaust fire damper of the utility model, swing vane itself and swing vane and valve store inner wall are fully sealed, guarantee the high sealing performance of valve body closing.

Description

Technical Field

[0001] This utility model specifically relates to a high-sealing blade-type smoke exhaust fire damper, belonging to the technical field of smoke exhaust fire dampers. Background Technology

[0002] A smoke exhaust fire damper is a fire-fighting component, typically installed on the ducts of a mechanical smoke exhaust system. It is normally open, opening to exhaust smoke during a fire. It closes when the smoke temperature in the exhaust duct reaches 280 degrees Celsius and meets requirements for smoke leakage and fire resistance integrity within a certain time, thus acting as a smoke and fire barrier. Existing blade-type smoke exhaust fire dampers rely primarily on blades for sealing when closed; gaps between the blades can lead to incomplete sealing and reduced equipment effectiveness. To address this, Chinese Patent Publication No. CN215110548U discloses a high-sealing blade-type smoke exhaust fire damper. This structure allows for quick fixing of the blade-type smoke exhaust fire damper and also provides a sealing connection between the blades, facilitating user operation. However, existing designs cannot guarantee a seal between the blades and the valve chamber. Utility Model Content

[0003] To address the aforementioned issues, this invention proposes a high-sealing blade-type smoke exhaust fire damper, where the swing blade itself and the swing blade itself fully seal against the inner wall of the valve chamber, ensuring high sealing performance when the valve body is closed.

[0004] This utility model relates to a high-sealing blade-type smoke exhaust fire damper, comprising a valve chamber, wherein an oscillating blade driven by an actuator is disposed inside the valve chamber, and fixed blades are fixed on both sides of the oscillating blade; the fixed blades are pressed together on both sides of the oscillating blade; and further comprising: Two right-angle plates are integrally formed at both ends of a fixed blade to form a frame, which is fixed to the inner wall of the valve chamber. Swinging slots are spaced apart on the right-angle plates. Sealing grooves are provided between the swinging slots on the right-angle plates, and these sealing grooves include an upper and lower pressure groove that are offset and stamped on the top and bottom surfaces of the right-angle plates. Rotation holes are provided at the swinging slots on the right-angle plates. The oscillating blade is sealed with a core column at the center of both ends. The oscillating blade is integrally formed with a sealing edge at both ends, and the sealing edge is fixed to the core column. The core column is rotatably installed with the rotating hole body. The sealing edge on one side of the core column is pressed into the upper pressure groove, and the sealing edge on the other side of the core column is pressed into the lower pressure groove.

[0005] The frame and the inner wall of the valve chamber are welded and fully sealed. When the temperature inside the valve chamber exceeds 280°C, the actuator is activated, driving the core column of the swing blade to rotate and swing at the swing groove, so that the blades of the swing blade overlap each other, thereby isolating and sealing the upper and lower parts of the valve chamber. The two sides of the swing blade are pressed together with the fixed blade, so that the two sides of the swing blade are fully sealed with the two sides inside the valve chamber. At the same time, the other two sides of the swing blade are rotated and pressed together with the sealing groove through the sealing edge, so that the other two sides of the swing blade are fully sealed with the other two sides inside the valve chamber, ensuring that the upper and lower parts of the valve chamber are fully isolated and sealed.

[0006] Furthermore, a sealing flange is stamped on the edge sealing, and a sealing groove is stamped on the top surface of the upper pressure groove and the bottom surface of the lower pressure groove; the sealing flange and the sealing groove are pressed together; by the mutual pressing of the sealing flange and the sealing groove, the edge sealing and the right-angle plate can form a three-dimensional seal, which can prevent smoke from leaking between the edge sealing and the right-angle plate and ensure the sealing performance of the overlap between the edge sealing and the right-angle plate.

[0007] Furthermore, the oscillating blade is composed of multiple blade bodies, with an upwardly protruding first V-shaped portion and a downwardly protruding second V-shaped portion stamped on both sides of the blade body; the first V-shaped portion and the second V-shaped portion of adjacent blade bodies are movably pressed together; when the valve chamber is closed, adjacent blade bodies overlap each other, and the first V-shaped portion and the second V-shaped portion are pressed together, which can form a three-dimensional seal between the blade bodies, preventing smoke from leaking between the sealing edge and the right-angle plate, and ensuring the sealing performance of the overlap between the sealing edge and the right-angle plate.

[0008] Furthermore, a first sealing strip is provided on both sides of the swing blade, and a second sealing strip is provided on the sealing edge and the sealing groove mating surface; the first and second sealing strips can improve the high-strength seal between the swing blades and ensure the high-strength seal between the swing blades and the valve chamber.

[0009] Furthermore, the frame and the inner wall of the valve chamber are sealed and welded together, and the top and bottom edges of the frame are fully welded to achieve a high-strength seal with the valve chamber.

[0010] Compared with the prior art, the high-sealing blade-type smoke exhaust fire damper of this utility model has a three-dimensional seal formed by the mutual pressing of the blades of the swing blade through a first V-shaped part and a second V-shaped part, which ensures the sealing performance of the swing blade itself. The two sides of the swing blade are also pressed with the fixed blade in a V-shape, so that the two sides of the swing blade are three-dimensionally sealed with the valve chamber. In addition, the other two sides of the swing blade are pressed with the right-angle plate through the sealing edge, so that the other two sides of the swing blade are sealed with the valve chamber, thereby making the swing blade itself and the swing blade fully sealed with the inner wall of the valve chamber. Attached Figure Description

[0011] Figure 1This is a schematic diagram of the overall structure of the smoke exhaust fire damper without valve compartment installed according to this utility model.

[0012] Figure 2 This is a schematic diagram of the oscillating blade and the fixed blade of this utility model.

[0013] Figure 3 This is a schematic diagram of the overall structure of the frame of this utility model.

[0014] Figure 4 This is a schematic diagram of the blade body and edge sealing installation structure of this utility model.

[0015] Reference numerals: 1. Oscillating blade, 2. Fixed blade, 3. Right-angle plate, 4. Oscillating groove, 5. Upper pressure groove, 6. Lower pressure groove, 7. Rotating hole body, 8. Sealing edge, 9. Core column, 10. Sealing flange, 11. Blade body, 12. First V-shaped part, 13. Second V-shaped part. Detailed Implementation

[0016] Example 1: like Figures 1 to 4 The high-sealing blade-type smoke exhaust fire damper shown includes a valve chamber, an inner side of which is provided with a swing blade 1 driven by an actuator, and fixed blades 2 fixed on both sides of the swing blade 1; the swing blade 1 and the fixed blades 2 are pressed together on both sides; it also includes: Two right-angle plates 3 are provided and integrally formed at both ends of the fixed blade 2 to form a frame, which is fixed to the inner wall of the valve chamber; swing grooves 4 are spaced apart on the right-angle plates 3; sealing grooves are provided between the swing grooves 4 on the right-angle plates 3, and the sealing grooves include an upper pressure groove 5 and a lower pressure groove 6 that are offset and stamped on the top and bottom surfaces of the right-angle plates 3; rotating holes 7 are provided at the swing grooves 4 on the right-angle plates 3; The edge sealing 8 is provided. A core column 9 is fixed at the center of both ends of the swing blade 1. The edge sealing 8 is integrally formed at both ends of the swing blade 1. The edge sealing 8 is fixed to the core column 9. The core column 9 is rotatably installed with the rotating hole body 7. The edge sealing 8 on one side of the core column 9 is pressed into the upper pressure groove 5, and the edge sealing 8 on the other side of the core column 9 is pressed into the lower pressure groove 6.

[0017] The frame and the inner wall of the valve chamber are welded and fully sealed. When the temperature inside the valve chamber exceeds 280°C, the actuator is activated, driving the core column 9 of the swing blade 1 to rotate and swing at the swing groove 4, so that the blades of the swing blade 1 overlap each other, thereby isolating and sealing the upper and lower parts of the valve chamber. The two sides of the swing blade 1 are pressed together with the fixed blade 2, so that the two sides of the swing blade 1 are fully sealed with the two sides inside the valve chamber. At the same time, the other two sides of the swing blade 1 are rotated and pressed together with the sealing groove through the sealing edge 8, so that the other two sides of the swing blade 1 are fully sealed with the other two sides inside the valve chamber, ensuring that the upper and lower parts of the valve chamber are fully isolated and sealed.

[0018] A sealing flange 10 is stamped on the edge sealing 8, and a sealing groove is stamped on the top surface of the upper pressure groove 5 and the bottom surface of the lower pressure groove 6; the sealing flange 10 and the sealing groove are sealed and pressed together; by the mutual pressing of the sealing flange 10 and the sealing groove, the edge sealing 8 and the right-angle plate 3 can form a three-dimensional seal, which can prevent smoke from leaking between the edge sealing 8 and the right-angle plate 3 and ensure the sealing performance of the overlap between the edge sealing 8 and the right-angle plate 3.

[0019] The oscillating blade 1 is composed of multiple blade bodies 11. Each blade body 11 has an upwardly protruding first V-shaped portion 12 and a downwardly protruding second V-shaped portion 13 stamped on both sides. The first V-shaped portion 12 and the second V-shaped portion 13 of adjacent blade bodies 11 are movably pressed together. When the valve chamber is closed, adjacent blade bodies 11 overlap each other, and the first V-shaped portion 12 and the second V-shaped portion 13 are pressed together, which can form a three-dimensional seal between the blade bodies 11, preventing smoke from leaking between the sealing edge 8 and the right-angle plate 3, and ensuring the sealing performance of the overlap between the sealing edge 8 and the right-angle plate 3.

[0020] The swing blade 1 is provided with a first sealing strip on both sides, and the sealing edge 8 is provided with a second sealing strip on the mating surface of the sealing groove; the first sealing strip and the second sealing strip can improve the high-strength seal between the swing blades 1 and ensure the high-strength seal between the swing blades 1 and the valve chamber.

[0021] The frame and the inner wall of the valve chamber are sealed and welded together, and the top and bottom edges of the frame are fully welded to achieve a high-strength seal with the valve chamber.

[0022] The above embodiments are merely preferred embodiments of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model are included within the scope of the present utility model.

Claims

1. A high-sealing blade-type smoke exhaust fire damper, comprising a valve chamber, wherein an oscillating blade driven by an actuator is disposed inside the valve chamber, and fixed blades are fixed on both sides of the oscillating blade; the fixed blades are pressed together on both sides of the oscillating blade; characterized in that: Also includes: Two right-angle plates are integrally formed at both ends of a fixed blade to form a frame, which is fixed to the inner wall of the valve chamber. Swinging slots are spaced apart on the right-angle plates. Sealing grooves are provided between the swinging slots on the right-angle plates, and these sealing grooves include an upper and lower pressure groove that are offset and stamped on the top and bottom surfaces of the right-angle plates. Rotation holes are provided at the swinging slots on the right-angle plates. The oscillating blade is sealed with a core column at the center of both ends. The oscillating blade is integrally formed with a sealing edge at both ends, and the sealing edge is fixed to the core column. The core column is rotatably installed with the rotating hole body. The sealing edge on one side of the core column is pressed into the upper pressure groove, and the sealing edge on the other side of the core column is pressed into the lower pressure groove.

2. The high-sealing blade-type smoke exhaust fire damper according to claim 1, characterized in that: A sealing flange is stamped on the edge, and a sealing groove is stamped on the top surface of the upper pressure groove and the bottom surface of the lower pressure groove; the sealing flange and the sealing groove are pressed together for sealing.

3. The high-sealing blade-type smoke exhaust fire damper according to claim 1, characterized in that: The oscillating blade is composed of multiple blade bodies, and each blade body has an upwardly protruding first V-shaped portion and a downwardly protruding second V-shaped portion stamped on both sides; the first V-shaped portions and the second V-shaped portions of adjacent blade bodies are movably pressed together.

4. The high-sealing blade-type smoke exhaust fire damper according to claim 1, characterized in that: The oscillating blade is provided with a first sealing strip on both sides, and the sealing edge and the sealing groove are provided with a second sealing strip.

5. The high-sealing blade-type smoke exhaust fire damper according to claim 1, characterized in that: The frame and the inner wall of the valve chamber are sealed and welded together.

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