Fireproof valve with automatic fire extinguishing function

Abstract

The utility model relates to the technical field of fireproof valves, in particular to a fireproof valve with an automatic fire extinguishing function, which comprises a valve body, a plurality of blades are arranged in the middle of the valve body and are arranged in parallel, a driving component is arranged on the side edge of each blade, and a dry powder box is fixedly connected to the side edge of the top of the valve body. An air bag is heated and expanded to extrude a connecting short rod, the connecting short rod drives a driving handle to rotate, the driving handle drives movable rods at the two ends to rotate, the movable rods rotate to drive two supporting blocks to rotate, the supporting blocks rotate to drive the connecting rod to move downwards, and when the connecting rod gradually moves downwards, the connecting rod is jacked; the connecting block and the two sealing plates are rotated, the two sealing plates are changed into an open state from a sealed closed state, then a dry powder fire extinguishing agent in the dry powder box is scattered into the valve body, fire extinguishing treatment on fire on one side in the valve body is facilitated, a fire source is cut off in time, and the fire is prevented from continuing to expand.

Description

Technical Field

[0001] The utility model relates to the technical field of fire dampers, in particular to a fire damper with an automatic fire extinguishing function. Background Art

[0002] A fire damper is a key device for preventing the spread of fire, preventing the diffusion of smoke and ensuring the safety of personnel in a building. It is usually installed in the ventilation ducts or air conditioning systems in a building. When a fire or smoke is detected, the fire damper will automatically close to prevent the spread of fire and the diffusion of smoke.

[0003] However, in the existing fire dampers during use, when a fire occurs, they can only close the fire damper by rotating the blades in the fire damper to prevent the spread of fire, but cannot directly extinguish the fire source. When the fire source continues to burn inside the fire damper, it may cause the fire to continue to spread and expand, thus increasing the disaster losses. Although the fire damper can block the diffusion of smoke to other areas, if the fire is not completely extinguished, the smoke will still continue to accumulate, and then the fire cannot be controlled within a controllable range in the initial stage of the fire, resulting in the expansion of the fire and affecting the evacuation and escape of personnel. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the defects existing in the prior art, and to provide a fire damper with an automatic fire extinguishing function.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A fire damper with an automatic fire extinguishing function includes a valve body. A plurality of blades are arranged in the middle of the valve body, and the plurality of blades are arranged parallel to each other. A driving component is arranged on the side of the blade. A dry powder box is fixedly connected to the side of the top of the valve body, and a fire extinguishing component is arranged inside the dry powder box;

[0007] The fire extinguishing component includes a support rod fixed on the inner wall of the dry powder box. The end of the support rod is movably connected with a driving handle. Connecting shafts are symmetrically arranged at both ends of the driving handle. Moving rods are arranged at the ends of the two connecting shafts. A support block is connected to the end of the moving rod. The support block is movably connected to the inner wall of the dry powder box through a support shaft. Two sealing plates are arranged at the bottom of the dry powder box. A connecting block is fixedly connected to the sealing plate. The connecting block is movably connected with the support block through a connecting rod.

[0008] Preferably, a connecting column is fixedly connected to the top of the inner wall of the dry powder box. A temperature sensor and an airbag are respectively arranged on the connecting column. A fixing block is fixedly connected between the connecting shaft and the driving handle. A connecting short rod is fixedly connected to one side of the fixing block. The connecting short rod abuts against the side of the airbag.

[0009] Preferably, the driving assembly includes a control box fixed to the side of the valve body. A control cylinder is arranged inside the control box. The output end of the control cylinder is connected with a driving rod. A plurality of connecting pieces are arranged on the driving rod. One side of each of the plurality of connecting pieces is provided with a blade shaft. The blade shaft penetrates through the valve body and extends into the interior of the valve body and is fixedly connected with the blade.

[0010] Preferably, both sides of the inner wall of the bottom of the dry powder box are fixedly connected with support columns. Both sealing plates are movably connected with the dry powder box through the support columns.

[0011] Preferably, the dry powder box is filled with dry powder fire extinguishing agent.

[0012] The beneficial effects of the utility model are as follows:

[0013] The driving assembly on one side of the fire damper drives the blade shaft and the blade to rotate, thereby helping to cut off the fire on one side of the fire damper and prevent the spread of the fire. When the airbag is heated and expands, it then squeezes the connecting short rod. The connecting short rod drives the driving handle to rotate. When the driving handle rotates, it drives the movable rods at both ends to rotate respectively. The movable rods rotate to drive the two support blocks to rotate respectively. When the support blocks rotate, they drive the connecting rod to move downward. When the connecting rod gradually moves downward, it pushes the connecting block, causing the connecting block and the two sealing plates to rotate with the support columns as the fulcrum, so that the two sealing plates change from the sealed state to the open state. Subsequently, the dry powder fire extinguishing agent inside the dry powder box is sprinkled into the interior of the valve body, which helps to extinguish the fire on one side inside the valve body, and timely cuts off the fire source, preventing the fire from continuing to expand, and can control the fire within a controllable range. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall structural schematic diagram of a fire damper with an automatic fire extinguishing function proposed by the utility model;

[0015] Figure 2 is the internal structural schematic diagram of the dry powder box of a fire damper with an automatic fire extinguishing function proposed by the utility model;

[0016] Figure 3 is a fire damper with an automatic fire extinguishing function proposed by the utility model Figure 2 Schematic diagram of the enlarged structure at point A;

[0017] Figure 4 is the structural schematic diagram of the open state of the sealing plate of a fire damper with an automatic fire extinguishing function proposed by the utility model;

[0018] Figure 5 is a fire damper with an automatic fire extinguishing function proposed by the utility model Figure 4 Schematic diagram of the enlarged structure at point B;

[0019] Figure 6 The structural schematic diagram of the enlarged part at point C in a fire damper with an automatic fire extinguishing function proposed by the present utility model Figure 4 in the figure.

[0020] In the figure:

[0021] 1. Valve body; 2. Blades; 3. Dry powder box; 301. Support rod; 4. Driving handle; 401. Connecting shaft; 5. Movable rod; 501. Support block; 502. Support shaft; 503. Connecting rod; 504. Connecting block; 6. Sealing plate; 7. Support column; 8. Connecting column; 801. Temperature sensor; 802. Airbag; 803. Fixed block; 804. Connecting short rod; 9. Control box; 10. Driving rod; 1011. Connecting piece; 1012. Blade shaft. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0023] The content not detailed in this specification belongs to the prior art well-known to those skilled in the art.

[0024] The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the records in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0025] Embodiment:

[0026] Referring to Figures 1-6 , a fire damper with an automatic fire extinguishing function includes a valve body 1. A plurality of blades 2 are arranged in the middle of the valve body 1. The plurality of blades 2 are arranged parallel to each other. A driving assembly is arranged on the side of the blades 2. A dry powder box 3 is fixedly connected to the side of the top of the valve body 1. An extinguishing assembly is arranged inside the dry powder box 3;

[0027] The fire extinguishing assembly includes a support rod 301 fixed to the inner wall of the dry powder tank 3. The end of the support rod 301 is movably connected to a drive handle 4. Connecting shafts 401 are symmetrically arranged at both ends of the drive handle 4. Movable rods 5 are arranged at the ends of the two connecting shafts 401. A support block 501 is connected to the end of the movable rod 5. The support block 501 is movably connected to the inner wall of the dry powder tank 3 through a support shaft 502. Two sealing plates 6 are arranged at the bottom of the dry powder tank 3. A connecting block 504 is fixedly connected to the sealing plate 6. The connecting block 504 is movably connected to the support block 501 through a connecting rod 503.

[0028] A connecting column 8 is fixedly connected to the top of the inner wall of the dry powder tank 3. A temperature sensor 801 and an airbag 802 are respectively arranged on the connecting column 8. A fixing block 803 is fixedly connected between the connecting shaft 401 and the drive handle 4. A connecting short rod 804 is fixedly connected to one side of the fixing block 803. The connecting short rod 804 abuts against the side of the airbag 802.

[0029] The driving assembly includes a control box 9 fixed to the side of the valve body 1. A control cylinder is arranged in the control box 9. The output end of the control cylinder is connected to a driving rod 10. A plurality of connecting pieces 1011 are arranged on the driving rod 10. Blade shafts 1012 are arranged on one side of the plurality of connecting pieces 1011. The blade shafts 1012 penetrate through the valve body 1 and extend into the interior of the valve body 1 and are fixedly connected to the blades 2.

[0030] Support columns 7 are fixedly connected to both sides of the inner bottom wall of the dry powder tank 3. The two sealing plates 6 are movably connected to the dry powder tank 3 through the support columns 7.

[0031] The dry powder tank 3 is filled with dry powder fire extinguishing agent.

[0032] In this implementation scheme, specifically, when a fire occurs, when the fire passes through the valve body 1, the control cylinder in the control box 9 is started. When the control cylinder operates, it drives the driving rod 10 to move. When the driving rod 10 moves, it drives the connecting piece 1011 to rotate around the fulcrum where the driving rod 10 and the connecting piece 1011 are connected. When the connecting piece 1011 rotates, it drives the blade shaft 1012 on the other side to rotate. When the blade shaft 1012 rotates, it drives the blade 2 in the valve body 1 to rotate. Thus, when the blade 2 rotates from a state perpendicular to the valve body 1 to a parallel state, the valve body 1 can be closed, and then the fire can be cut off inside the valve body 1 to prevent the fire from spreading.

[0033] Further, when the fire continues to burn on the inner side of the valve body 1, the heat inside the valve body 1 rises sharply at this time. When the temperature inside the valve body 1 gradually increases, the heat is transferred to the inside of the dry powder box 3 at this time. The temperature sensor 801 is used to monitor the temperature inside the dry powder box 3. When the temperature inside the dry powder box 3 gradually increases, the airbag 802 is affected by the heat inside the dry powder box 3 and gradually expands. During the process of gradual expansion of the airbag 802, it squeezes the connecting short rod 804 to one side. One end of the connecting short rod 804 rotates with the support rod 301 as the fulcrum when being squeezed. When the connecting short rod 804 rotates, it drives the fixed block 803 and the driving handle 4 to rotate clockwise with the support rod 301 as the fulcrum. When the driving handle 4 rotates, it drives the movable rods 5 at both ends of it to rotate respectively. When the movable rods 5 on both sides rotate, they drive the left support block 501 to rotate counterclockwise with the support shaft 502 and the right support block 501 to rotate clockwise with the support shaft 502 respectively. When the support block 501 rotates, it drives the connecting rod 503 to move downward. When the connecting rod 503 gradually moves downward, it pushes the connecting block 504, causing the connecting block 504 to rotate with the support column 7 as the fulcrum. Thus, when the connecting block 504 rotates, it drives the two sealing plates 6 to rotate. When the two sealing plates 6 rotate, they gradually change from the sealed state to the open state. Furthermore, when the two sealing plates 6 are in the open state, a large amount of dry powder extinguishing agent inside the dry powder box 3 spills into the inside of the valve body 1 at this time, so as to extinguish the fire on one side inside the valve body 1, cut off the fire source in time, prevent the fire from spreading continuously, and control the fire within a controllable range.

[0034] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0035] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0036] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims

1. A fire damper with automatic fire extinguishing function, comprising a valve body (1), characterized in that: A plurality of blades (2) are arranged in parallel with each other in the middle of the valve body (1); a driving assembly is arranged on the side of the blade (2); a dry powder box (3) is fixedly connected to the top side of the valve body (1); and a fire extinguishing assembly is arranged inside the dry powder box (3); The fire extinguishing assembly comprises a support rod (301) fixed on the inner wall of a dry powder box (3), the end of the support rod (301) is movably connected to a driving handle (4), the two ends of the driving handle (4) are symmetrically provided with connecting shafts (401), the ends of the two connecting shafts (401) are provided with movable rods (5), the ends of the movable rods (5) are connected to support blocks (501), the support blocks (501) are movably connected to the inner wall of the dry powder box (3) through support shafts (502), the bottom of the dry powder box (3) is provided with two sealing plates (6), the sealing plates (6) are fixedly connected to a connecting block (504), and the connecting block (504) is movably connected to the support block (501) through a connecting rod (503).

2. A fire damper with automatic fire extinguishing function according to claim 1, characterized in that: A connecting column (8) is fixedly connected to the top of the inner wall of the dry powder box (3), and a temperature sensor (801) and an air bag (802) are respectively arranged on the connecting column (8). A fixing block (803) is fixedly connected between the connecting shaft (401) and the driving handle (4), and a connecting short rod (804) is fixedly connected to one side of the fixing block (803), and the connecting short rod (804) abuts against the side of the air bag (802).

3. The fire damper with automatic fire extinguishing function according to claim 1, characterized in that: The drive assembly comprises a control box (9) fixed to the side of the valve body (1), a control cylinder being arranged in the control box (9), an output end of the control cylinder being connected to a drive rod (10), a plurality of connecting members (1011) being arranged on the drive rod (10), a blade shaft (1012) being arranged on one side of each of the connecting members (1011), the blade shaft (1012) penetrating the valve body (1) and extending to the interior of the valve body (1) and being connected and fixed to the blade (2).

4. The fire damper with automatic fire extinguishing function according to claim 1, characterized in that: Support columns (7) are fixedly connected to both sides of the inner wall of the bottom of the dry powder box (3), and the two sealing plates (6) are movably connected to the dry powder box (3) via the support columns (7).

5. The fire damper with automatic fire extinguishing function according to claim 1, characterized in that: The dry powder box (3) is filled with dry powder fire extinguishing agent.

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