Fireproof valve capable of blocking smoke diffusion

Abstract

The utility model belongs to the technical field of fireproof valves, and particularly relates to a fireproof valve capable of blocking smoke diffusion, which comprises a fireproof valve body, an opening is arranged on the fireproof valve body, a blocking plate is arranged in the opening, four corners of the bottom of the blocking plate are fixedly connected with fixing blocks, cavities are arranged in the fixing blocks, limiting blocks are arranged in the cavities, and the limiting blocks are fixedly connected with the opening. The edge of the limiting block is slidably connected with the inner side wall of the cavity, a clamping block is fixedly connected to one side of the limiting block, a clamping groove corresponding to the clamping block is formed in the fireproof valve body, a limiting rod is fixedly connected to the side, away from the clamping block, of the limiting block, and one end of the limiting rod penetrates through the inner side wall of the cavity and extends outwards. The extending end of the limiting rod is fixedly connected with a limiting handle. The fireproof valve capable of obstructing smoke diffusion can obstruct smoke diffusion and is convenient to mount and dismount, convenience of regular cleaning is achieved, and the situation that dust explodes due to dust accumulation is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of fire damper technology, and in particular relates to a fire damper that can block the spread of smoke. Background Technology

[0002] Fire dampers are key components of building fire protection systems, primarily used to prevent the spread of fire and high-temperature smoke through ventilation ducts, ensuring the relative safety of evacuation routes and buying time for fire rescue. Their core functions include smoke and fire isolation, linkage control systems, airflow regulation, and ensuring the structural integrity of the building. They are widely used in ventilation and air conditioning systems, smoke extraction systems, and safety passageways.

[0003] However, after a period of use, the existing fire dampers will accumulate a lot of dust on the barrier plates that can block the spread of smoke, which can cause dust to explode during use and requires regular disassembly and cleaning. Utility Model Content

[0004] The purpose of this utility model is to solve the technical problem that after a period of use, the barrier plate of the existing fire damper that can block the spread of smoke will accumulate a lot of dust, which will cause the dust to explode during use and require regular disassembly and cleaning. Therefore, a fire damper that can block the spread of smoke is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A fire damper capable of blocking the diffusion of smoke includes a fire damper body with an opening. A baffle plate is provided inside the opening. Fixing blocks are fixedly connected to the four corners of the bottom of the baffle plate. A cavity is provided inside the fixing block. A limiting block is provided inside the cavity. The edge of the limiting block is slidably connected to the inner wall of the cavity. A locking block is fixedly connected to one side of the limiting block. A locking groove corresponding to the locking block is provided on the fire damper body. A limiting rod is fixedly connected to the side of the limiting block away from the locking block. One end of the limiting rod penetrates the inner wall of the cavity and extends outward. A limiting handle is fixedly connected to the extended end of the limiting rod.

[0007] Preferably, a first spring is sleeved on the limiting rod, the first spring is located inside the cavity, and the two ends of the first spring are fixedly connected to the limiting block and the inner sidewall of the cavity, respectively.

[0008] Preferably, the fire damper body has an installation cavity at the top of the opening, a movable block is provided in the installation cavity, the edge of the movable block is slidably connected to the inner wall of the installation cavity, a movable rod is fixedly connected to the bottom of the movable block, one end of the movable rod passes through the bottom of the installation cavity and extends downward, a pressing block is fixedly connected to the extended end of the movable rod, one side of the pressing block abuts against the barrier plate, and a second spring is sleeved on the movable rod, the two ends of the second spring are fixedly connected to the pressing block and the fire damper body respectively.

[0009] Preferably, both ends of the limiting block are provided with grooves, and a ball is provided in the groove, with the edge of the ball contacting the inner wall of the cavity.

[0010] Preferably, the limiting handle has a T-shaped structure.

[0011] Preferably, mounting blocks are fixedly connected to the four corners of the top of the fire damper body, and the mounting blocks are provided with mounting holes.

[0012] Beneficial effects:

[0013] In this invention, the fire damper body is fixed to the smoke exhaust outlet through the mounting holes on the mounting block. Simultaneously, a baffle plate is inserted into the opening of the fire damper body to block the fire source. At this time, the inner wall of the opening presses against the inclined surface of the locking block, causing the locking block to slide into the cavity and compress the first spring. When the locking block aligns with the slot, it slides into the slot under the thrust of the first spring, fixing the baffle plate in place. This design facilitates easy installation and disassembly, improving efficiency. During the insertion of the baffle plate into the opening, the pressing block moves with the baffle plate, pushing the moving block within the mounting cavity. This compresses and stretches the second spring mounted on the moving rod, providing force buffering and improving the stability of the baffle plate during use, preventing vibration caused by the smoke exhaust outlet. This fire damper, which blocks smoke diffusion, is easy to install and disassemble, allowing for convenient regular cleaning and avoiding dust explosions caused by dust accumulation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of a fire damper that can block the spread of smoke;

[0016] Figure 2 for Figure 1Enlarged structural diagram at point A in the diagram;

[0017] Figure 3 for Figure 1 A magnified structural diagram at point B in the diagram.

[0018] In the diagram: 1-fire damper body, 2-barrier plate, 3-fixing block, 4-limiting block, 5-clamping block, 6-limiting rod, 7-limiting handle, 8-first spring, 9-moving block, 10-moving rod, 11-pressing block, 12-second spring, 13-ball bearing, 14-mounting block, 15-mounting hole. Detailed Implementation

[0019] 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.

[0020] Reference Figure 1-3 A fire damper capable of blocking the spread of smoke includes a fire damper body 1, an opening on the fire damper body 1, a baffle plate 2 inside the opening, a fixing block 3 fixedly connected to each of the four corners of the bottom of the baffle plate 2, a cavity inside the fixing block 3, a limiting block 4 inside the cavity, the edge of the limiting block 4 slidingly connected to the inner wall of the cavity, a locking block 5 fixedly connected to one side of the limiting block 4, a locking groove corresponding to the locking block 5 on the fire damper body 1, a limiting rod 6 fixedly connected to the side of the limiting block 4 away from the locking block 5, one end of the limiting rod 6 penetrating the inner wall of the cavity and extending outward, and a limiting handle 7 fixedly connected to the extended end of the limiting rod 6.

[0021] In this embodiment, a first spring 8 is sleeved on the limiting rod 6. The first spring 8 is located inside the cavity, and its two ends are fixedly connected to the limiting block 4 and the inner wall of the cavity, respectively, to provide a certain elastic support for the locking block 5. The fire valve body 1 has an installation cavity at the top of the opening, and a movable block 9 is provided inside the installation cavity to support the movable rod 10. The edge of the movable block 9 is slidably connected to the inner wall of the installation cavity, and the bottom of the movable block 9 is fixedly connected to the movable rod 10 to support the pressing block 11. One end of the movable rod 10 penetrates the bottom of the installation cavity and extends downward. The extended end of the movable rod 10 is fixedly connected to the pressing block 11 to provide a certain elastic support for the barrier plate 2. For the fixed function, one side of the extrusion block 11 abuts against the barrier plate 2. A second spring 12 is sleeved on the moving rod 10. The two ends of the second spring 12 are fixedly connected to the extrusion block 11 and the fire damper body 1, respectively, to provide a certain elastic support for the extrusion block 11. Both ends of the limiting block 4 are provided with grooves, and ball bearings 13 are provided in the grooves. The edges of the ball bearings 13 contact the inner sidewall of the cavity to reduce the friction between the limiting block 4 and the inner sidewall of the cavity. The limiting handle 7 has a T-shaped structure, which facilitates the movement of the limiting rod 6. Mounting blocks 14 are fixedly connected to the four corners of the top of the fire damper body 1. Mounting blocks 14 are provided with mounting holes 15 for fixing the fire damper body 1.

[0022] Working principle: In use, the fire damper body 1 is fixed at the smoke exhaust port through the mounting hole 15 on the mounting block 14. At the same time, the baffle plate 2 is installed into the opening of the fire damper body 1 to block the fire source. At this time, the inner wall of the opening presses the inclined surface of the locking block 5, so that the locking block 5 slides into the cavity and presses the first spring 8. When the locking block 5 coincides with the slot, the locking block 5 slides into the slot under the push of the first spring 8, fixing the baffle plate 2. It is easy to disassemble and improves the efficiency of use. During the process of the baffle plate 2 being installed into the opening, the pressing block 11 moves with the baffle plate 2, pushing the moving block 9 to move in the mounting cavity, so that the second spring 12 sleeved on the moving rod 10 is compressed and stretched, realizing the force buffer, improving the stability of the baffle plate 2 during use, and preventing the baffle plate 2 from vibrating during the exhaust of smoke.

[0023] 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 damper capable of blocking the diffusion of smoke, comprising a fire damper body (1), characterized in that: The fire damper body (1) has an opening, and a baffle plate (2) is provided inside the opening. A fixing block (3) is fixedly connected to each of the four corners of the bottom of the baffle plate (2). A cavity is provided inside the fixing block (3). A limiting block (4) is provided inside the cavity. The edge of the limiting block (4) is slidably connected to the inner wall of the cavity. A locking block (5) is fixedly connected to one side of the limiting block (4). A locking groove corresponding to the locking block (5) is provided on the fire damper body (1). A limiting rod (6) is fixedly connected to the side of the limiting block (4) away from the locking block (5). One end of the limiting rod (6) penetrates the inner wall of the cavity and extends outward. A limiting handle (7) is fixedly connected to the extended end of the limiting rod (6).

2. The fire damper according to claim 1, wherein: A first spring (8) is sleeved on the limiting rod (6). The first spring (8) is located inside the cavity, and the two ends of the first spring (8) are fixedly connected to the limiting block (4) and the inner wall of the cavity, respectively.

3. A fire damper capable of blocking smoke diffusion according to claim 1, characterized in that: The fire damper body (1) has an installation cavity at the top of the opening. A movable block (9) is provided in the installation cavity. The edge of the movable block (9) is slidably connected to the inner wall of the installation cavity. A movable rod (10) is fixedly connected to the bottom of the movable block (9). One end of the movable rod (10) passes through the bottom of the installation cavity and extends downward. A pressing block (11) is fixedly connected to the extended end of the movable rod (10). One side of the pressing block (11) abuts against the barrier plate (2). A second spring (12) is sleeved on the movable rod (10). The two ends of the second spring (12) are fixedly connected to the pressing block (11) and the fire damper body (1), respectively.

4. A fire damper capable of blocking smoke diffusion according to claim 1, characterized in that: The limiting block (4) has grooves at both ends, and a ball (13) is provided in the groove. The edge of the ball (13) is in contact with the inner wall of the cavity.

5. The fire damper according to claim 1, wherein: The limiting handle (7) has a T-shaped structure.

6. The fire damper according to claim 1, wherein: Mounting blocks (14) are fixedly connected to the four corners of the top of the fire damper body (1), and mounting holes (15) are provided on the mounting blocks (14).

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