Steel heat insulation fireproof door leaf

Abstract

The utility model relates to the technical field of fireproof doors, in particular to a steel heat-insulation fireproof door leaf which comprises a door frame, two door plates hinged to the middle of the door frame, flame-retardant assemblies installed in the door plates, sliding rods connected in the door plates in a sliding mode, sliding plates fixedly connected to the upper sides of the sliding rods, and push plates fixedly connected to the bottoms of the sliding rods. A mounting plate is fixedly connected to the upper side in the door plate, a plurality of nozzles are mounted on the front side of the mounting plate, a first cavity is formed in the bottom side in the door plate and filled with expanded graphite, and a second cavity is formed in the upper side in the door plate and filled with a dry powder extinguishing agent. According to the steel heat-insulation fireproof door leaf, by arranging the expanded graphite, the expanded graphite expands rapidly after being heated and generates gas, the push plate and the sliding rod are pushed, and therefore the dry powder fire extinguishing agent is pushed to be sprayed out through the spray head, and rapid automatic fire extinguishing is achieved. By means of the automatic response mechanism, the rapid response capacity in the initial stage of the fire disaster is greatly improved, and losses possibly caused by the fire disaster are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof doors, in particular to a steel heat-insulating fireproof door leaf. Background Art

[0002] In modern building design, fire safety is a vital link, especially in public buildings, commercial centers and high-rise residential buildings. The design and function of fire doors are directly related to the safety of personnel and the protection of property. Steel insulated fire door leaves are an important fire-fighting facility used to block flames and heat conduction, delay the spread of fire, and provide valuable time for personnel evacuation.

[0003] In the existing technology, traditional fire doors mostly rely on passive fire prevention measures, such as using door bodies made of flame-retardant materials to slow the spread of fire. Although these traditional fire doors can prevent the spread of flames and heat to a certain extent, they have the following major shortcomings:

[0004] 1. Traditional fire doors mainly rely on their physical structure and the flame retardant properties of their materials to resist fire. This passive protection method has limited effect when the fire is large or the burning time is long, and it cannot actively intervene in the development of the fire.

[0005] 2. Most fire doors do not have an integrated fire extinguishing system. Once a fire occurs, the door itself cannot take measures to control or slow the spread of the fire and relies on external fire extinguishing measures to respond, which may result in the loss of precious early fire extinguishing opportunities. Therefore, a new type of steel insulated fire door leaf is proposed to solve the above problems. Utility Model Content

[0006] The main purpose of the utility model is to provide a steel heat-insulating fireproof door leaf, which can effectively solve the problems in the background technology.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A steel heat-insulating fireproof door leaf comprises a door frame, wherein two door panels are hingedly connected to the middle of the door frame, a flame-retardant component is installed inside the door panel, a sliding rod is slidably connected inside the door panel, a sliding plate is fixedly connected to the upper side of the sliding rod, a push plate is fixedly connected to the bottom of the sliding rod, a mounting plate is fixedly connected to the upper side of the door panel, a plurality of nozzles are installed on the front side of the mounting plate, a first cavity is opened on the bottom side of the door panel, the first cavity is filled with expanded graphite, a second cavity is opened on the upper side of the door panel, and the second cavity is filled with dry powder fire extinguishing agent.

[0009] Preferably, the flame retardant component includes a calcium silicate board, which is arranged on the inner wall of the door panel, and ceramic fibers are arranged on the inner side of the calcium silicate board. Phosphate-based coating is adhered to the inner side of the ceramic fibers, and a skeleton is fixedly connected to the inside of the phosphate-based coating.

[0010] Through the above technical solution, multiple layers of fireproof materials are provided, which can further block and delay the fire, and also improve the structural stability of the door panel, so that it can provide more reliable safety protection in a fire.

[0011] Preferably, an observation window is installed in the middle of the door panel, and a handle is installed on the front side of the right door panel.

[0012] Through the above technical solution, the observation window in the middle of the door panel allows the situation inside the door to be observed from the outside, thereby improving the safety monitoring capability. The handle is designed on the front side of the door panel to facilitate quick operation of the door leaf, especially to quickly open the door leaf in case of emergency escape.

[0013] Preferably, a first through hole is defined between the first cavity and the push plate, and a second through hole is defined between the second cavity and the mounting plate.

[0014] Through the above technical solution, by providing the first through hole and the second through hole, it can be ensured that the expansion of the expanded graphite due to high temperature and the gas push the push plate to slide, and further the push plate sprays the dry powder fire extinguishing agent inside the second cavity through the nozzle.

[0015] Preferably, a pressure spring is sleeved on the outer side of the slide rod, one end of the pressure spring is fixedly connected to the upper side of the push plate, and the other end of the pressure spring is fixedly connected to the inner wall of the door panel.

[0016] Through the above technical solution, when the slide bar is pushed upward by the internal air pressure, the pressure spring can help the slide bar return to its original position quickly after the force dissipates, keeping the push plate ready to reset in case of the next fire.

[0017] Preferably, the slide plate fits against the inside of the door panel and is slidably connected inside the second cavity, and the push plate fits against the inner wall of the door panel and is slidably connected inside the door panel.

[0018] The above technical solution ensures that in the event of a fire, the thermal reaction of the expanded graphite can be quickly converted into mechanical action to activate the fire extinguishing system, and ensures that the dry powder fire extinguishing agent is quickly and evenly sprayed through the nozzle when a fire occurs, effectively combating the fire source.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1. In the utility model, the expanded graphite is set to expand rapidly after heating and generate gas, which pushes the push plate and the slide rod, thereby pushing the dry powder fire extinguishing agent to be sprayed out through the nozzle, thereby realizing rapid automatic fire extinguishing. This automatic response mechanism greatly increases the rapid response capability at the initial stage of a fire and reduces the losses that may be caused by the fire;

[0021] 2. In the present invention, by integrating flame retardant components inside the door panel, including calcium silicate board, ceramic fiber and phosphate-based coating, these materials jointly provide excellent thermal insulation and fire protection functions. This multi-layered protection structure can effectively delay the invasion of fire and protect the area behind the door leaf from the impact of fire, thus winning more precious time for the evacuation of people in the building or fire rescue. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a steel heat-insulating fireproof door leaf of the utility model;

[0023] Figure 2 This is an exploded view of a door panel of a steel heat-insulating fireproof door leaf of the utility model;

[0024] Figure 3 It is a schematic diagram of a push plate of a steel heat-insulating fireproof door leaf of the utility model;

[0025] Figure 4 The utility model is a structural schematic diagram of a flame retardant component of a steel heat-insulating fireproof door leaf.

[0026] In the figure: 1. door frame; 2. door panel; 3. handle; 4. observation window; 5. frame; 6. flame retardant component; 601. calcium silicate board; 602. ceramic fiber; 603. phosphate-based coating; 7. first cavity; 8. first through hole; 9. push plate; 10. slide bar; 11. pressure spring; 12. slide plate; 13. second cavity; 14. second through hole; 15. mounting plate; 16. nozzle. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0028] like Figure 1-Figure 4As shown, a steel heat-insulating fireproof door leaf includes a door frame 1. The function of the door frame 1 is to install and fix the door panel 2, and to facilitate the installation of the door frame 1 and the door panel 2 at a specified position. Two door panels 2 are connected by a hinge in the middle of the door frame 1. A flame-retardant component 6 is installed inside the door panel 2. By installing the flame-retardant component 6 inside the door panel 2, the fireproof performance of the door panel 2 is improved. A sliding rod 10 is slidably connected inside the door panel 2. The function of the sliding rod 10 is to slide and drive a slide plate 12 to slide. The slide plate 12 is fixedly connected to the upper side of the sliding rod 10. The function of the slide plate 12 is to push the dry powder fire extinguishing agent inside the second cavity 13. A push plate 9 is fixedly connected to the bottom of the sliding rod 10. The function of the push plate 9 is to push the gas generated by the overheating of the expanded graphite inside the first cavity 7. , push the slide bar 10 to slide, a mounting plate 15 is fixedly connected to the upper side of the interior of the door panel 2, the mounting plate 15 is used to fix the nozzle 16, and to transport the dry powder fire extinguishing agent to the nozzle 16 for spraying, a plurality of nozzles 16 are installed on the front side of the mounting plate 15, the nozzle 16 is used to spray the dry powder fire extinguishing agent in case of fire, a first cavity 7 is opened on the bottom side of the interior of the door panel 2, the first cavity 7 is filled with expanded graphite, when the expanded graphite is heated, the interlayer chemical substances are rapidly decomposed or gasified, and a large amount of gas is generated, causing the graphite to expand rapidly, and push the push plate 9 to slide through the first through hole 8, a second cavity 13 is opened on the upper side of the interior of the door panel 2, the second cavity 13 is filled with dry powder fire extinguishing agent, and the dry powder fire extinguishing agent is used for fire extinguishing.

[0029] The flame retardant component 6 includes a calcium silicate board 601, which is arranged on the inner wall of the door panel 2. The calcium silicate board 601 has sound insulation and heat insulation properties. Ceramic fiber 602 is arranged on the inner side of the calcium silicate board 601. Ceramic fiber 602 is a high-performance heat insulation and fire-resistant material. Phosphate-based coating 603 is adhered to the inner side of the ceramic fiber 602. The inside of the phosphate-based coating 603 is fixedly connected to the skeleton 5. The phosphate-based coating 603 can be applied to steel structures to form a fireproof protective layer to prevent the structure from failing quickly in a fire. This configuration effectively delays the invasion of the fire on the inside of the door panel 2 and wins precious time for escape.

[0030] An observation window 4 is installed in the middle of the door panel 2, and a handle 3 is installed on the front side of the right door panel 2. An observation window 4 is installed in the middle of the door panel 2, which is convenient for observing the situation inside the door from the outside while maintaining overall safety and sealing. A handle 3 is installed on the right front side of the door panel 2 to facilitate the operation of opening and closing the door. The design of the handle 3 also takes into account emergency situations during escape, and is easy to grasp and open quickly.

[0031] A first through hole 8 is provided between the first cavity 7 and the push plate 9, and a second through hole 14 is provided between the second cavity 13 and the mounting plate 15. By providing the first through hole 8 and the second through hole 14, an effective gas and pressure transmission channel can be formed inside the door panel 2. In case of fire, dry powder fire extinguishing agent can be quickly sprayed out through the nozzle 16, thereby improving fire extinguishing efficiency and response speed.

[0032] A pressure spring 11 is sleeved on the outside of the slide rod 10, one end of the pressure spring 11 is fixedly connected to the upper side of the push plate 9, and the other end of the pressure spring 11 is fixedly connected to the inner wall of the door panel 2. By setting the pressure spring 11, it is ensured that the slide rod 10 can be quickly reset when subjected to external force, and the damage caused by the pressure spring 11 not being fixed during use is reduced.

[0033] The slide plate 12 fits with the inside of the door panel 2 and is slidably connected inside the second cavity 13, ensuring that the sliding of the slide rod 10 drives the slide plate 12 to slide, pushing the dry powder fire extinguishing agent inside the second cavity 13 to the nozzle 16 for spraying, and fitting the push plate 9 inside the second cavity 13 with the inner wall of the door panel 2 and being slidably connected inside the door panel 2, ensuring that the expanded graphite expands due to high temperature and the generated gas can effectively push the push plate 9 to slide.

[0034] It should be noted that the utility model is a steel heat-insulating fireproof door leaf. First, the door frame 1 and the door panel 2 are installed at the designated position. When a fire occurs, the calcium silicate board 601 inside the door panel 2 provides structural support and preliminary heat insulation function, the ceramic fiber 602 enhances the heat insulation effect, prevents heat from quickly penetrating the door panel 2, and the phosphate-based coating 603 forms a protective layer at high temperature, further delaying the damage of the fire to the internal structure of the door panel 2. At the same time, the expanded graphite will be heated by the occurrence of the fire, and the expanded graphite will produce The dry powder fire extinguishing agent in the second cavity 13 is squeezed, and pushed to the inside of the mounting plate 15 through the second through hole 14, and finally sprayed out through the nozzle 16 to achieve rapid fire extinguishing. After the fire is extinguished, the pressure spring 11 will be reset due to the pressure dissipation to deal with the next fire that may occur at any time.

[0035] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A steel heat-insulating fireproof door leaf, comprising a door frame (1), characterized in that: The door frame (1) is hinged in the middle to connect two door panels (2), a flame retardant component (6) is installed inside the door panel (2), a sliding rod (10) is slidably connected inside the door panel (2), a sliding plate (12) is fixedly connected to the upper side of the sliding rod (10), a push plate (9) is fixedly connected to the bottom of the sliding rod (10), a mounting plate (15) is fixedly connected to the upper side of the door panel (2), a plurality of nozzles (16) are installed on the front side of the mounting plate (15), a first cavity (7) is opened on the bottom side of the door panel (2), the first cavity (7) is filled with expanded graphite, a second cavity (13) is opened on the upper side of the door panel (2), the second cavity (13) is filled with dry powder fire extinguishing agent.

2. A steel heat-insulating fireproof door leaf according to claim 1, characterized in that: The flame retardant component (6) comprises a calcium silicate board (601), wherein the calcium silicate board (601) is arranged on the inner wall of the door panel (2), ceramic fibers (602) are arranged on the inner side of the calcium silicate board (601), phosphate-based coating (603) is adhered to the inner side of the ceramic fibers (602), and a frame (5) is fixedly connected to the inside of the phosphate-based coating (603).

3. A steel heat-insulating fireproof door leaf according to claim 1, characterized in that: An observation window (4) is installed in the middle of the door panel (2), and a handle (3) is installed on the front side of the right door panel (2).

4. The steel heat-insulating fireproof door leaf according to claim 1, characterized in that: A first through hole (8) is provided between the first cavity (7) and the push plate (9), and a second through hole (14) is provided between the second cavity (13) and the mounting plate (15).

5. The steel heat-insulating fireproof door leaf according to claim 1, characterized in that: A pressure spring (11) is sleeved on the outside of the slide rod (10), one end of the pressure spring (11) is fixedly connected to the upper side of the push plate (9), and the other end of the pressure spring (11) is fixedly connected to the inner wall of the door panel (2).

6. The steel heat-insulating fireproof door leaf according to claim 1, characterized in that: The slide plate (12) fits in with the interior of the door panel (2) and is slidably connected inside the second cavity (13); the push plate (9) fits in with the inner wall of the door panel (2) and is slidably connected inside the door panel (2).

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