A high flame-retardant steel fire door with ventilation function
By installing baffles and pull rope systems on fire doors, the problem of fire doors failing to automatically close ventilation openings during a fire is solved, achieving automatic sealing of ventilation openings, ensuring safety and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU FUYANG JIANDUN DOOR & WINDOW TECH CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-06-02
AI Technical Summary
Existing fire doors cannot automatically close their ventilation openings during a fire, allowing toxic gases such as smoke to enter fire escape routes, increasing safety hazards.
Design a high flame-retardant steel fire door with ventilation openings, equipped with a baffle and pull rope system. The baffle automatically closes the ventilation openings in the event of a fire, and the pull rope is burned off by the high temperature of the fire, causing the baffle to fall and seal the ventilation openings.
It automatically closes ventilation openings during a fire, blocking smoke and flames to ensure safe escape, while the pull rope is easy to replace, reducing maintenance costs.
Smart Images
Figure CN224314862U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire door technology, specifically to a high flame-retardant steel fire door with ventilation function. Background Technology
[0002] Steel 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, and vertical shafts. Most existing fire doors have good airtightness but lack ventilation function, which cannot guarantee ventilation for daily use of fire escape routes. Moreover, most fire doors with ventilation holes require manual opening or closing. However, in the event of a fire, people cannot close the ventilation holes in a timely and effective manner. Dense smoke and other toxic gases can enter the fire escape route through the ventilation holes, causing secondary injuries to people escaping in the fire escape route and increasing certain safety hazards. Summary of the Invention
[0003] The technical problem to be solved by this utility model is to provide a high flame-retardant steel fire door with ventilation function, which is provided with ventilation openings to meet the daily ventilation effect and can automatically close after a fire, so as to solve the problems mentioned in the background art.
[0004] This utility model is achieved through the following technical solution: a high flame-retardant steel fire door with ventilation function, including a fire door body, the fire door body is provided with a ventilation opening, the interior of the passage opening expands outward to form a chamber communicating with the ventilation opening, the interior of the chamber is provided with a baffle, one end of the baffle extends into the passage opening, the other end of the baffle is provided with a first wiring hole that penetrates the baffle laterally, the fire door body is provided with grooves on both sides, the inner wall of the groove is provided with a second wiring hole communicating with the first wiring hole, the first wiring hole and the second wiring hole are provided with a pull rope to hold the baffle, the groove is provided with a fixing seat and a pressing seat to fix the two ends of the pull rope respectively, and the outer side of the fire door body is provided with an ignition groove communicating with the second wiring hole.
[0005] As a preferred technical solution, the fixing seat is inserted into the groove on one side and is connected to the tension fixing. The groove on the other side is recessed to form an L-shaped groove that communicates with the outside. The end of the pull rope away from the fixing seat is bent and extends to the outside through the L-shaped groove. The clamping seat is set in the groove on the other side and is threadedly connected to the groove on the other side. The outer ring surface and end face of the clamping seat are in close contact with the bent end of the tension.
[0006] As a preferred technical solution, a cross groove is provided on the outer end face of the clamping seat.
[0007] As a preferred technical solution, the edge of the baffle is wrapped with a rubber layer, and the outer side of the rubber layer is fitted to the inner side of the chamber.
[0008] As a preferred technical solution, both the fire door body and the baffle are made of steel.
[0009] As a preferred technical solution, the pull rope is a natural fiber rope.
[0010] As a preferred technical solution, the width of the chamber is matched with the thickness of the baffle.
[0011] The beneficial effects of this utility model are: the utility model has a simple structure, and the fire door body is provided with a passage opening to meet the daily ventilation needs. In the event of a fire, the high temperature generated by the fire can burn through the pull rope, allowing the baffle to fall automatically and seal the ventilation opening, thereby blocking the dense smoke and flames in time. Furthermore, both the baffle and the fire door body are made of steel, which reduces the cost of the pull rope. The baffle can be quickly replaced and raised again, increasing adaptability and avoiding waste. Attached Figure Description
[0012] 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.
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is a side view of the present invention;
[0015] Figure 3 This is a schematic diagram of the groove on one side of the present invention;
[0016] Figure 4 This is a partial cross-sectional view of the present invention.
[0017] Among them, 1. Fire door body; 2. Ventilation opening; 3. Chamber; 4. Baffle; 5. Rubber layer; 6. Ignition groove; 7. Pull rope; 8. Pressing seat; 9. Fixing seat; 10. L-shaped groove; 11. Groove. Detailed Implementation
[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0019] All features disclosed in this specification, or steps in all methods or processes disclosed herein, may be combined in any way, except for mutually exclusive features and / or steps.
[0020] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.
[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model discloses a high flame-retardant steel fire door with ventilation function, including a fire door body 1. The fire door body 1 is provided with a ventilation opening 2. The interior of the passage opening expands outward to form a chamber 3 communicating with the ventilation opening 2. A baffle 4 is provided inside the chamber 3. One end of the baffle 4 extends into the passage opening, and the other end of the baffle 4 is provided with a first wiring hole that penetrates the baffle 4 laterally. Grooves 11 are provided on both sides of the fire door body 1. A second wiring hole communicating with the first wiring hole is provided on the inner wall of the groove 11. A pull rope 7 for pulling the baffle 4 is provided in the first wiring hole and the second wiring hole. A fixing seat 9 and a pressing seat 8 for fixing the two ends of the pull rope 7 are respectively provided in the groove 11. An ignition groove 6 communicating with the second wiring hole is provided on the outer side of the fire door body 1.
[0022] In this embodiment, the fixing seat 9 is inserted into the groove 11 on one side and is connected to the tension fixing. The groove 11 on the other side is recessed to form an L-shaped groove 10 that communicates with the outside. The end of the pull rope 7 away from the fixing seat 9 is bent and extends to the outside through the L-shaped groove 10. The pressing seat 8 is set in the groove 11 on the other side and is threadedly connected to the groove 11 on the other side. The outer ring surface and end face of the pressing seat 8 are in close contact with the end of the tension bending.
[0023] The inner end face of the fixing base can be provided with a recessed groove, and a fixing ring can be installed in the groove, so that one end of the pull rope can be tied and fixed to the fixing ring, which facilitates the connection and disassembly between the pull rope and the fixing base.
[0024] In this embodiment, a cross groove is provided on the outer end face of the clamping seat 8. The clamping seat can be rotated by a screwdriver, which makes it easy to unscrew the clamping seat out of the groove. After the clamping seat loses its squeezing force on the pull rope, the pull rope can be pulled out from the first wiring hole and the second wiring hole by the fixing seat.
[0025] In this embodiment, a rubber layer 5 is wrapped around the edge of the baffle 4. The outer side of the rubber layer 5 is fitted to the inner side of the chamber 3. The rubber layer increases the sealing between the baffle and the chamber, which can effectively block dense smoke. The rubber layer is made of high-temperature resistant rubber, which is suitable for use at fire scenes.
[0026] In this embodiment, both the fire door body 1 and the baffle 4 are made of steel, which increases strength and meets fire resistance stability requirements.
[0027] In this embodiment, the pull rope 7 is a natural fiber rope, which is made of hemp, cotton, jute, sisal, etc. Natural fiber ropes have a strong load-bearing capacity. For example, hemp rope can bear hundreds of kilograms. It is also very easy to ignite and burns quickly. In the event of a fire, it can be burned through quickly, causing the baffle to fall quickly and block it.
[0028] In this embodiment, the width of the chamber 3 is matched with the thickness of the baffle 4, which increases the stabilization method and avoids the swaying of the baffle.
[0029] The fire door body is equipped with ventilation openings to meet daily ventilation needs. In the event of a fire, the high temperature generated by the fire can quickly burn through the ignition groove and break the pull rope. After losing the pull rope, the baffle can fall quickly by its own weight and seal the ventilation opening. The rubber layer increases the sealing between the baffle and the chamber, which can effectively block thick smoke and flames to ensure subsequent safety.
[0030] Since the baffle and fire door body are made of steel, they can continue to be used after a fire occurs and is extinguished. The fire only burns the pull rope, which is a natural fiber rope with low cost. Therefore, after the burned pull rope is removed, a new pull rope can be installed, and the baffle can be raised again. After the new pull rope passes through the first and second wiring holes again, one end of the pull rope can be pressed down by the clamping seat, while the other end is fixed to the fixing seat. This allows it to bear the weight of the baffle again, enabling repeated use and greatly reducing costs.
[0031] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.
Claims
1. A high flame-retardant steel fire door with ventilation function, characterized in that: The fire door includes a fire door body (1), which has a ventilation opening (2). The interior of the passage opening expands outward to form a chamber (3) communicating with the ventilation opening (2). The interior of the chamber (3) is provided with a baffle (4). One end of the baffle (4) extends into the passage opening. The other end of the baffle (4) is provided with a first wiring hole that penetrates the baffle (4). The fire door body (1) has grooves (11) on both sides. The inner wall of the groove (11) is provided with a second wiring hole communicating with the first wiring hole. The first wiring hole and the second wiring hole are provided with a pull rope (7) to hold the baffle (4). The groove (11) is provided with a fixing seat (9) and a pressing seat (8) to fix the two ends of the pull rope (7). The outer side of the fire door body (1) is provided with an ignition groove (6) communicating with the second wiring hole.
2. The high flame-retardant steel fire door with ventilation function according to claim 1, characterized in that: The fixing seat (9) is inserted into the groove (11) on one side and is connected to the tension fixing. The groove (11) on the other side is recessed to form an L-shaped groove (10) that communicates with the outside. The end of the pull rope (7) away from the fixing seat (9) is bent and extends to the outside through the L-shaped groove (10). The clamping seat (8) is set in the groove (11) on the other side and is threadedly connected to the groove (11) on the other side. The outer ring surface and end face of the clamping seat (8) are in close contact with the end of the tension bending.
3. The high flame-retardant steel fire door with ventilation function according to claim 1, characterized in that: A cross groove is provided on the outer end face of the clamping seat (8).
4. The high flame-retardant steel fire door with ventilation function according to claim 1, characterized in that: The edge of the baffle (4) is wrapped with a rubber layer (5), and the outer side of the rubber layer (5) is fitted to the inner side of the chamber (3).
5. The high flame-retardant steel fire door with ventilation function according to claim 1, characterized in that: The fire door body (1) and the baffle (4) are both made of steel.
6. The high flame-retardant steel fire door with ventilation function according to claim 1, characterized in that: The pull rope (7) is a natural fiber rope.
7. The high flame-retardant steel fire door with ventilation function according to claim 1, characterized in that: The width of the chamber (3) matches the thickness of the baffle (4).