A fire door with adjustable vent

Abstract

The utility model relates to fireproof door technical field, concretely is a kind of fireproof door of adjustable air vent, including fireproof door main part, the middle part of fireproof door main part is equipped with air vent, one end of fireproof door main part is equipped with mounting groove, the upper portion of mounting groove is equipped with swing groove, the upper portion of one end of fireproof door main part is equipped with adjusting groove, the middle part of swing groove is fixedly installed with fixed plate, the periphery of the outer side of the middle part of fixed plate is all fixedly installed with guide slide bar, the side of guide slide bar is rotatably connected with hollow swing plate, the periphery of hollow swing plate is all equipped with arc sliding slot, the periphery of the middle part of hollow swing plate is rotatably installed with connecting rod. The utility model has solved the problem that the traditional fireproof door is closed or open, and is designed as full-closed door panel, and the function scene is limited obviously, and there are many problems in actual use.

Description

Technical Field

[0001] This utility model relates to the field of fire door technology, specifically a fire door with adjustable ventilation openings. Background Technology

[0002] Fire doors are doors that can meet the requirements of fire resistance stability, integrity and heat insulation within a certain period of time. They are fire-resistant partitions with a certain degree of fire resistance installed in fire compartments, evacuation stairwells, vertical shafts and other locations. In addition to the functions of ordinary doors, fire doors are more importantly able to prevent the spread of fire and smoke, and can buy time for personnel evacuation and fire rescue within a certain period of time.

[0003] Traditional fire doors, whether normally closed or normally open, are mostly designed with fully enclosed panels, which significantly limits their functionality and presents many shortcomings in practical use. For example, in everyday use, in scenarios requiring ventilation such as underground equipment rooms or enclosed corridors, traditional fire doors can only achieve ventilation by opening the door or installing additional ventilation equipment. The former compromises the airtightness of the fire compartment and is prone to failure during a fire, while the latter increases equipment investment and energy consumption, thus having certain limitations. Utility Model Content

[0004] One of the technical problems that this application aims to solve is that traditional fire doors, whether normally closed or normally open, are mostly designed with fully enclosed door panels, which significantly limits their functional scenarios and has many shortcomings in actual use.

[0005] To address the aforementioned technical problems, this application provides a fire door with an adjustable ventilation opening, comprising a fire door body, a ventilation opening in the middle of the fire door body, an installation groove at one end of the fire door body, a swing groove above the installation groove, an adjustment groove above one end of the fire door body, a fixed plate fixedly installed in the middle of the swing groove, guide rods fixedly installed around the outer perimeter of the middle of the fixed plate, a hollow rotating plate rotatably engaged on one side of the guide rods, an arc-shaped sliding groove around the perimeter of the hollow rotating plate, connecting rods rotatably installed around the middle perimeter of the hollow rotating plate, baffles rotatably installed at one end of each of the connecting rods, a second air vent in the middle of the fixed plate, an L-shaped pull rod fixedly installed at the upper end of the hollow rotating plate, a lever fixedly installed at one end of the L-shaped pull rod, and a limit screw threadedly connected to the middle of the upper end of the lever.

[0006] In some embodiments, a filter screen is fixedly installed at one end of the vent by screws.

[0007] In some embodiments, a cover plate is fixedly mounted on the surface of the mounting groove by screws, and an air vent is provided in the middle of the cover plate.

[0008] In some embodiments, the vent and the air outlet are connected, the mounting groove is located at one end of the vent and is larger than the vent, and the mounting groove and the vent are connected.

[0009] In some embodiments, the guide rods are slidably engaged in the middle of the corresponding arc-shaped grooves, and one end of the baffle is rotatably engaged in the four sides of the outer side of the middle of the fixed plate. The multiple baffles can be spliced ​​together to completely block the second air vent.

[0010] In some embodiments, the second air vent is connected to the ventilation opening, the L-shaped pull rod is slidably engaged in the middle of the swing groove and the adjustment groove, and one end of the limiting screw abuts against the surface of the fire door body.

[0011] This utility model has at least the following beneficial effects: 1. In use, this utility model offers flexible and reliable adjustment of the ventilation opening size, balancing daily practicality with emergency safety. During operation, the linkage structure can be activated via a lever, allowing for continuous adjustment of the baffle from complete blockage to full expansion, precisely adapting to different ventilation needs. After adjustment, tightening the limit screw securely locks the ventilation state, preventing accidental changes. In case of fire, reverse operation allows the baffle to quickly and completely seal the vent, working in conjunction with the existing sealing structure of the door to achieve smoke and fire isolation, thus meeting both daily and emergency needs.

[0012] 2. When this utility model is in use, the filter screen at the ventilation opening can filter impurities and prevent dust accumulation and blockage of internal components. In the later stage, only the filter screen needs to be disassembled for cleaning or replacement, without disassembling the door body; the cover plate can cover the internal core adjustment components to prevent damage caused by external collisions, reduce the frequency of component repair or replacement, and reduce long-term use and maintenance costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the appearance and structure of this utility model; Figure 2 This is an anatomical diagram showing the connection relationship between the fire door body and the filter screen of this utility model; Figure 3 This is a schematic diagram of the disassembled structure of this utility model; Figure 4 This is a cross-sectional disassembly diagram of the present invention; Figure 5 This is a disassembled diagram showing the positional relationship between the fixing plate and the hollow rotating plate of this utility model.

[0014] In the diagram: 1. Fire door body; 11. Ventilation opening; 12. Filter screen; 13. Mounting groove; 14. Cover plate; 15. Air vent one; 2. Fixing plate; 21. Guide rod; 22. Swing groove; 23. Adjustment groove; 24. Hollow rotating plate; 25. Arc-shaped sliding groove; 26. Connecting rod; 27. Baffle; 28. Air vent two; 29. ​​L-shaped pull rod; 30. Toggle block; 31. Limiting screw. Detailed Implementation

[0015] 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.

[0016] Example 1: Please refer to Figure 1 - Figure 5 This utility model provides a technical solution: a fire door with an adjustable ventilation opening, including a fire door body 1, a ventilation opening 11 in the middle of the fire door body 1, an installation groove 13 at one end of the fire door body 1, a swing groove 22 above the installation groove 13, an adjustment groove 23 above one end of the fire door body 1, a fixing plate 2 fixedly installed in the middle of the swing groove 22, guide rods 21 fixedly installed around the outer periphery of the middle of the fixing plate 2, a hollow rotating plate 24 rotatably engaged on one side of the guide rods 21, an arc-shaped sliding groove 25 around the hollow rotating plate 24, and connecting rods 26 rotatably installed around the middle periphery of the hollow rotating plate 24, with one end of the multiple connecting rods 26... Each of the baffles 27 is rotatably installed. A second air vent 28 is opened in the middle of the fixed plate 2. An L-shaped pull rod 29 is fixedly installed on the upper end of the hollow rotating plate 24. A lever 30 is fixedly installed on one end of the L-shaped pull rod 29. A limit screw 31 is threadedly connected to the middle of the upper end of the lever 30. The guide rods 21 are respectively slidably engaged in the middle of the corresponding arc-shaped slide grooves 25. One end of the baffle 27 is respectively rotatably engaged in the four sides of the outer side of the middle of the fixed plate 2. Multiple baffles 27 can be spliced ​​together to completely block the second air vent 28. The second air vent 28 is connected to the ventilation opening 11. The L-shaped pull rod 29 is slidably engaged in the middle of the swing groove 22 and the adjustment groove 23. One end of the limit screw 31 abuts against the surface of the fire door body 1.

[0017] In this embodiment, when adjusting the air intake volume, the user can use the lever 30 to rotate the L-shaped pull rod 29 to one side along the swing groove 22 and the adjustment groove 23, thereby causing the hollow rotating plate 24 to rotate around the fixed plate 2. During this process, the guide rod 21 will slide along the arc-shaped sliding groove 25, causing the surrounding connecting rods 26 to push and pull the baffles 27 simultaneously. This allows the multiple baffles 27 to flexibly switch from the state of completely blocking the second air vent 28 to the state of fully opening and exposing the second air vent 28, realizing continuous adjustment of the ventilation volume from minimum to maximum. At the same time, rotating in the opposite direction will allow the baffles 27 to be fully spliced. When the baffles 27 are fully spliced, they can be tightly sealed. The second air vent 28, in conjunction with the original sealing structure of the fire door body 1, can meet the requirements for smoke and fire isolation during a fire, taking into account both daily ventilation and emergency fire prevention needs. After adjusting to the required ventilation volume, simply tighten the limit screw 31 to make it abut against the surface of the fire door body 1 to lock the current position of the baffle 27, preventing changes in ventilation status due to wind, vibration, or accidental contact, and ensuring stable ventilation volume. Moreover, the locking and unlocking process does not require tools and has high practicality. During the process, only the push of the lever 30 is needed to simultaneously control the opening and closing of multiple baffles 27, making the operation simple and quick, and convenient for users to operate quickly in emergency situations.

[0018] Example 2: As Figure 1 - Figure 2 As shown, a filter screen 12 is fixedly installed at one end of the vent 11 by screws, and a cover plate 14 is fixedly installed on the surface of the mounting groove 13 by screws. An air vent 15 is opened in the middle of the cover plate 14. The vent 11 and the air vent 15 are connected. The mounting groove 13 is located at one end of the vent 11 and is larger than the vent 11. The mounting groove 13 and the vent 11 are connected.

[0019] In this embodiment, the filter 12 at one end of the vent 11 can filter dust, hair, debris and other impurities in the air during ventilation, preventing impurities from entering the fire door through the vent 11. The filter 12 can block most impurities, eliminating the need for frequent disassembly of the door to clean the internal baffle 27, hollow rotating plate 24 and other components. In the future, only periodic disassembly of the filter 12 is required for cleaning or replacement, which is convenient for maintenance. The cover 14 can cover the internal fixing plate 2, hollow rotating plate 24, connecting rod 26 and other core adjustment components to prevent deformation and damage to internal components caused by external collisions.

[0020] Working principle: like Figure 1 - Figure 5As shown, during use, when the ventilation volume needs to be adjusted, the user can push the lever 30 to rotate the L-shaped pull rod 29 fixed thereto along the swing groove 22 and adjustment groove 23 on the fire door body 1 to one side. Since the lower end of the L-shaped pull rod 29 is fixed to the hollow rotating plate 24, it will synchronously drive the hollow rotating plate 24 to rotate around the fixed plate 2. When the hollow rotating plate 24 rotates, the arc-shaped sliding groove 25 opened around it will slide along the guide rod 21 on the outside of the fixed plate 2, where the guide rod 21 is the fixed fulcrum and the arc-shaped sliding groove 25 is the movement trajectory. At the same time, the connecting rod 26 around the middle of the hollow rotating plate 24 rotates with the hollow rotating plate 24, and synchronously pushes and pulls the baffle 27 connected thereto. If the lever 30 is pushed in the unfolding direction, the connecting rod 26 will pull the baffle 27 to rotate outward of the fixed plate 2, and multiple baffles 27 will unfold from the spliced ​​state. The ventilation volume of the second vent 28 exposed in the middle of the fixed plate 2 increases as the baffle 27 is fully extended until it is fully extended, at which point the ventilation volume reaches its maximum. If the lever is pushed in the closing direction, the connecting rod 26 will push the baffle 27 to rotate towards the middle of the fixed plate 2. Multiple baffles 27 are gradually spliced ​​together, and the second vent 28 is gradually blocked. The ventilation volume decreases as the baffles 27 are spliced ​​together until they are fully spliced ​​together, and the second vent 28 is tightly sealed, at which point the ventilation volume drops to its minimum. After the ventilation volume is adjusted to the required level, the limiting screw 31 at the upper end of the lever 30 is tightened by hand so that one end is tightly abutted against the surface of the fire door body 1. The friction between the limiting screw 31 and the door surface fixes the position of the lever 30, the L-shaped pull rod 29, and the hollow rotating plate 24, thereby locking the opening and closing state of the baffle 27 and preventing wind, vibration, or accidental contact from causing unexpected changes in the ventilation volume, thus ensuring stable ventilation. When a fire occurs and the ventilation opening 11 needs to be closed to block smoke and fire, the baffle 27 can be completely sealed by reverse adjustment, which can quickly block smoke and fire, and buy time for personnel evacuation and fire rescue.

[0021] During ventilation, the air will first be filtered by filter screen 12. Filter screen 12 can filter dust, hair, debris and other impurities in the air to prevent impurities from entering the fire door. Filter screen 12 can be replaced or cleaned every once in a while. During maintenance, you only need to remove the screws that fix filter screen 12, remove filter screen 12 for cleaning or replacement and then reinstall it.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A fire door with adjustable ventilation openings, comprising a fire door body (1), characterized in that: A ventilation opening (11) is provided in the middle of the fire door body (1). A mounting groove (13) is provided at one end of the fire door body (1). A swing groove (22) is provided above the mounting groove (13). An adjustment groove (23) is provided above one end of the fire door body (1). A fixing plate (2) is fixedly installed in the middle of the swing groove (22). Guide rods (21) are fixedly installed on all four sides of the outer side of the middle of the fixing plate (2). A hollow rotating plate (24) is rotatably engaged on one side of the guide rod (21). The hollow rotating plate (24) has arc-shaped sliding grooves (25) on all four sides. The hollow rotating plate (24) has connecting rods (26) rotatably installed on all four sides of the center. One end of each of the connecting rods (26) is rotatably installed with a baffle (27). The fixed plate (2) has a second air vent (28) in the center. The upper end of the hollow rotating plate (24) is fixedly installed with an L-shaped pull rod (29). One end of the L-shaped pull rod (29) is fixedly installed with a lever (30). The upper end of the lever (30) is threadedly connected with a limit screw (31).

2. A fire door with adjustable ventilation openings according to claim 1, characterized in that: A filter screen (12) is fixedly installed at one end of the vent (11) by screws.

3. A fire door with adjustable ventilation openings according to claim 2, characterized in that: The mounting groove (13) is fixedly mounted with a cover plate (14) by screws, and an air vent (15) is opened in the middle of the cover plate (14).

4. A fire door with adjustable ventilation openings according to claim 2, characterized in that: The vent (11) and the air outlet (15) are connected. The mounting groove (13) is located at one end of the vent (11) and is larger than the vent (11). The mounting groove (13) and the vent (11) are connected.

5. A fire door with adjustable ventilation openings according to claim 1, characterized in that: The guide rods (21) are respectively slidably engaged in the middle of the corresponding arc-shaped grooves (25), and one end of the baffle (27) is respectively rotated and engaged in the four sides of the outer side of the middle of the fixed plate (2). The multiple baffles (27) can be spliced ​​together to completely block the second air vent (28).

6. A fire door with adjustable ventilation openings according to claim 1, characterized in that: The second air vent (28) and the ventilation vent (11) are connected. The L-shaped pull rod (29) is slidably engaged in the middle of the swing groove (22) and the adjustment groove (23). One end of the limiting screw (31) abuts against the surface of the fire door body (1).

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