Integrally-formed door leaf, preparation process thereof and fireproof door with door leaf

Abstract

The door leaf comprises a door leaf frame, a filling area is arranged on the inner side of the door leaf frame, an autoclaved aerated concrete block is arranged in the filling area, and the autoclaved aerated concrete block is tightly combined with the door leaf frame to form an integrated structure. A reinforcing component is arranged in the autoclaved aerated concrete block body, and the fireproof door comprises the door leaf. The fireproof door leaf is simple in structure and reasonable in design, the fireproof performance is remarkably improved, the overall weight is reduced, the sound insulation effect is enhanced by arranging the autoclaved aerated concrete blocks with the high proportion in the door leaf, meanwhile, the high strength and durability of the door leaf structure are ensured through application of the stable steel reinforcement framework and the reinforcing components, and the fireproof door leaf is suitable for being popularized and applied. The cured door leaf is not prone to damage, the service life is prolonged, the maintenance cost is reduced, the production process is optimized through the design, large-scale manufacturing and installation are facilitated, and the practicability and reliability of the fireproof door in practical application are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fireproof doors, and in particular to an integrally formed door leaf and a preparation process thereof, and a fireproof door having the door leaf. Background Art

[0002] As an important part of the building fire protection system, the history of fire doors can be traced back to the wooden or iron door panels used in ancient buildings to prevent the spread of fire. With the advancement of industrialization, the design and materials of fire doors have been continuously innovated, and various types have gradually developed to meet the fire protection needs of different building environments. At present, common types of fire doors mainly include steel fire doors, wooden fire doors and composite fire doors. Steel fire doors are widely used in high-rise buildings and public facilities due to their excellent fire resistance and structural stability; wooden fire doors are commonly used in commercial and residential buildings due to their good decorative and processing properties; composite fire doors combine the advantages of multiple materials, have both light weight and high strength characteristics, and are more adaptable.

[0003] However, traditional fire doors generally have problems such as complex processes, cumbersome structures and heavy weight during the manufacturing process, which restricts their widespread application in modern buildings. Taking steel fire doors as an example, their production requires multiple welding, assembly and fire-resistant coating processes, which not only has a long manufacturing cycle and high costs, but is also inconvenient during installation and maintenance. In addition, due to the multi-layer structural design, traditional fire doors have a large overall weight, which increases the difficulty of transportation and installation, especially in high-rise buildings, increasing the construction burden and safety hazards. In actual application scenarios, such as public buildings such as hospitals and schools, there are high requirements for the lightweight and quick installation of fire doors, and traditional fire doors are difficult to meet these requirements. Therefore, it is urgent to develop an integrated fire door with simple manufacturing process, novel structure and moderate weight to improve the practicality and application efficiency of fire doors and meet the diverse needs of modern buildings for fire safety. Summary of the invention

[0004] The object of the present invention is to provide an integrally formed door leaf and a preparation process thereof, as well as a fireproof door having the door leaf, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: an integrally formed door leaf, comprising a door leaf frame; A filling area is provided on the inner side of the door leaf frame; An autoclaved aerated concrete block is provided in the filling area, and the autoclaved aerated concrete block is tightly combined with the door leaf frame to form an integrated structure; A reinforcing member is arranged inside the autoclaved aerated concrete block, and the reinforcing member is used to enhance the structural strength of the door leaf.

[0006] Preferably, the mass proportion of the autoclaved aerated concrete block inside the door leaf is more than 98%, and the volume proportion of the autoclaved aerated concrete block inside the door leaf is more than 99%.

[0007] Preferably, the reinforcing member comprises: A plurality of tie steel bars, wherein the tie steel bars are distributed along the length direction and the width direction of the door leaf frame; A plurality of first steel bars and second steel bars are cross-arranged at a predetermined angle between the tie steel bars and are connected to the tie steel bars.

[0008] Preferably, the first steel bars and the second steel bars are arranged on the inner side of the door leaf frame in a longitudinal and transverse manner respectively.

[0009] Preferably, the center point of the tie steel bar in the length direction is aligned with the center point of the thickness of the door leaf frame, and both ends of the first steel bar are connected to the center point of the tie steel bar in the length direction.

[0010] A manufacturing process of an integrally formed door leaf comprises the following steps: S1: according to the outer dimensions of the door leaf, a door leaf frame 1 and a reinforcing member are manufactured and assembled and fixed together, and a support is installed at the bottom of the door leaf frame to form a combined mold, wherein the door leaf frame is formed by cutting and folding a high-strength galvanized coil with a thickness of ≥ 2.0 mm; S2: adding siliceous material, calcareous material, regulating material, gas-generating material and water into a stirrer and stirring to form a slurry; S3: injecting the slurry in step S2 into the combined mold in step S1, and arranging bubbles in the slurry with a vibrator; S4: sending the mold to a rest room for gasification and rest, the rest room is controlled at 40-45° C., and the rest time is 150-180 min; S5: Take out the mold from the resting room, cut off the excess blank and clean it up; S6: transporting the mold to an autoclave for high temperature and high pressure curing. The curing process includes three stages: heating, constant temperature and cooling. The constant temperature is 8 to 10 hours. The pressure in the autoclave is controlled at 12.5 to 13.5 MPa and the temperature is 185-195°C. S7: After the steaming is completed, the kettle door is opened to take out the mold, and the bottom support is removed, and the door leaf is formed in one piece; S8: Grind and clean the one-piece door leaf, and apply curing agent on the surface of the autoclaved aerated concrete.

[0011] Preferably, a tie bar is welded every 300 mm on the inner side of the door leaf frame.

[0012] Preferably, the total content of calcareous material and siliceous material in the slurry in S2 is 100%, of which calcareous material accounts for 30-40% of the total content, siliceous material accounts for 60-70% of the total content, gas-generating material is 0.5-0.7 kg / m³, and the water-to-material ratio is 0.52-0.62 A fireproof door, comprising a door frame, wherein the door frame is connected to the side of the door leaf frame by means of a fireproof hinge, and the door frame is connected to the top of the door leaf frame by means of a fireproof door closer, wherein the fireproof door comprises any one of the above-mentioned integrally formed door leaves Preferably, the connecting portion between the door leaf frame and the fireproof hinge and the connecting portion between the door leaf frame and the fireproof door closer are both provided with reinforcing lining plates.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The one-piece door leaf has the advantages of being lightweight, fireproof and soundproof. By setting a high proportion of autoclaved aerated concrete blocks inside the door leaf, the fireproof performance of the door leaf is significantly improved, the overall weight is reduced, and the sound insulation effect is enhanced. This design not only ensures that the door leaf remains light and easy to use while providing excellent fire protection, but also greatly improves its practicality and user experience in actual applications, while improving production efficiency. In addition, the entire door body is sturdy and durable, and will never deform or crack in a water environment or when soaked in water; The one-piece structure is easy to produce and is not easily damaged after curing. By setting up a stable steel frame, strengthening components and anti-corrosion treatment of the steel bars, the high strength and durability of the door leaf structure are ensured. The cured door leaf structure is not easily damaged by external forces, which extends the service life of the door leaf and reduces maintenance and repair costs. This design not only optimizes the force distribution of the door leaf, but also ensures that the fire door maintains a high degree of stability and reliability during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 A1-A1 is a cross-sectional view of the present invention; Figure 3 It is the B1-B1 cross-sectional view of the present invention; Figure 4 It is the C1-C1 cross-sectional view of the present invention; Figure 5 It is a schematic diagram of the internal steel bar structure of the door leaf of the present invention; Figure 6 A2-A2 is a cross-sectional view of the present invention; Figure 7 It is the B2-B2 cross-sectional view of the present invention; Figure 8 It is the C2-C2 cross-sectional view of the present invention; Fig. 9 It is a D2-D2 cross-sectional view of the present invention.

[0015] In the figure: 1. door leaf frame; 2. filling area; 3. autoclaved aerated concrete block; 4. reinforcing member; 401. tie steel bar; 402. first steel bar; 403. second steel bar; 5. bending part; 6. reinforcing steel bar; 7. door frame; 8. fireproof hinge; 9. fireproof door closer; 10. reinforcing lining. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense, for example, it can be fixed connection, setting, or detachable connection, setting, or integrated connection, setting. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined. Example

[0020] See also Figure 1-9As shown, the present invention provides a technical solution for an integrally formed door leaf and a fire door: an integrally formed door leaf, comprising a door leaf frame 1, the inner side of the door leaf frame 1 is designed with a filling area 2, in this area, autoclaved aerated concrete blocks 3 are filled, the autoclaved aerated concrete blocks 3 are tightly combined with the door leaf frame 1 to form an integrated structure, and a reinforcing member 4 is designed inside the autoclaved aerated concrete block 3, the design further enhances the overall structural strength of the door leaf, and ensures the stability and durability of the door leaf.

[0021] The mass of the autoclaved aerated concrete block 3 in the door leaf accounts for more than 95%, and its volume accounts for more than 99%. This high proportion of autoclaved aerated concrete filling not only significantly enhances the fire resistance of the door leaf, but also effectively reduces the overall weight and improves the sound insulation effect. This design allows the door leaf to provide excellent fire protection while maintaining lightness and ease of use, greatly improving its practicality and user experience in actual applications.

[0022] The reinforcing member 4 includes a plurality of tie bars 401, a first bar 402 and a second bar 403. The tie bars 401 are evenly distributed along the length and width directions of the door leaf frame 1. The first bar 402 and the second bar 403 are cross-arranged between the tie bars 401 at a predetermined angle and are connected to the tie bars 401 to form a staggered steel network structure. The steel network structure effectively enhances the overall structural strength of the door leaf, ensuring that the door leaf has higher stability and durability when subjected to external forces. Specifically, the arrangement direction of the first bar 402 and the second bar 403 is not limited.

[0023] In this embodiment, the first steel bar 402 and the second steel bar 403 are arranged longitudinally and transversely on the inner side of the door frame 1, respectively. In this design, the transverse and longitudinal steel bars work together to improve the tensile and compressive resistance of the door under bending load. The longitudinal steel bars mainly bear the tensile force, while the transverse steel bars help share the bending moment.

[0024] The center point of the tie steel bar 401 in the length direction is aligned with the center point of the thickness of the door leaf frame 1, and both ends of the first steel bar 402 are connected to the center point of the tie steel bar 401 in the length direction. This design aims to bring the longitudinal steel bar 402, which mainly bears the tensile force, closer to the inside of the autoclaved aerated concrete block 3, thereby further improving the overall structural strength and stress performance of the door leaf. This layout not only optimizes the stress distribution of the steel bars, but also ensures the stability and durability of the door leaf during long-term use.

[0025] The opening of the door leaf frame 1 is designed with a bent portion 5. The bent portion 5 is designed to provide a flat and stable welding surface for the welding part of the tie steel bar 401, thereby significantly enhancing the connection ability between the door leaf frame 1 and the tie steel bar 401. In addition, the bent portion 5 further fixes the autoclaved aerated concrete block 3 to a certain extent, effectively improving the overall structural stability and durability of the door leaf.

[0026] Reinforcement steel bars 6 are also provided on the door leaf frame 1 at the four inner corners of the door leaf frame 1 and at the second steel bar 403 and the midpoint of the second steel bar 403. This design is intended to prevent the door leaf frame 1 from deforming when subjected to force. In addition, the reinforcement steel bars 6 further fix the autoclaved aerated concrete block 3 by cooperating with the tie steel bars 401, ensuring that the door leaf remains stable when subjected to external forces.

[0027] The surfaces of the tie steel bar 401, the first steel bar 402 and the second steel bar 403 are all coated with an anti-corrosion agent. The main purpose of this anti-corrosion treatment is to effectively block corrosive media such as moisture, oxygen, carbon dioxide and chloride ions by forming a protective film on the surface of the steel bar, thereby preventing the steel bar from rusting and deteriorating in the concrete environment. The application of the anti-corrosion agent not only significantly extends the service life of the steel bar, maintains the overall strength and stability of the structure, but also reduces the maintenance and repair costs required due to steel bar corrosion. In addition, the anti-corrosion treatment improves the durability and reliability of the door leaf in various humid and corrosive environments, ensuring the safety and functionality of the door leaf in long-term use.

[0028] In addition, the present invention also provides a manufacturing process for an integrally formed door leaf, wherein the mortar raw materials for manufacturing the door leaf mainly include: 1. Silica materials Including quartz sand, tailings, subway sand, silt, yellow sand, stone powder, etc. The function is to use the silicon dioxide (SiO2) component in the above-mentioned siliceous materials and the calcium oxide (CaO) component and water (H2O) in the calcium materials to undergo hydrothermal reaction under high temperature and high pressure environment to generate tobermorite (5CaO • 6SiO2 • nH2O) minerals. At the same time, the unreacted silicon dioxide molecules are also evenly distributed in the minerals as aggregates. Therefore, the silicon dioxide (SiO2) content in the siliceous material must reach a certain proportion. One or a mixture of any of them can be used in production.

[0029] 2. Calcium materials Including lime, cement, blast furnace slag, etc. The function is to use the calcium oxide (CaO) component in the above-mentioned calcareous materials and the silicon dioxide (SiO2) component and water (H2O) in the siliceous materials to produce tobermorite (5CaO • 6SiO2 • nH2O) minerals under high temperature and high pressure. In addition, lime also provides gasification conditions, and cement can ensure stable casting and accelerate the hardening of the green body, improve the performance of the green body and improve the quality of the product. Therefore, the lime and cement in the calcareous materials need to be proportioned according to the conditions of themselves and other raw materials.

[0030] 3. Adjust the material Including desulfurized gypsum and phosphogypsum, etc. The function is to use the calcium sulfate component (CaSO4•2H2O) in the above-mentioned regulating materials to slow down the dissolution of quicklime and the thickening speed of slurry, participate in the hydration reaction of cement, and adjust the setting time of cement. At the same time, gypsum can also improve the strength of the body and products and improve the shrinkage performance. Only one of desulfurized gypsum and phosphogypsum is needed in production.

[0031] 4. Gas-generating materials Including aluminum powder and aluminum paste. The function is to use the aluminum (Al) component in the above-mentioned gas-generating materials to react with water (H2O) in alkaline liquid to generate hydrogen, thereby forming enough bubbles in the slurry, and finally forming uniform and dense micro-pores in the finished product. Only one of aluminum powder or aluminum paste is needed during production. In order to make the gas generated by gassing form bubbles of appropriate and uniform size in the slurry, and to maintain stability without deformation and rupture, bubble stabilizers can be used appropriately to reduce the surface tension of water. Bubble stabilizers mainly include soluble oil, pod powder, detergent, oxidized paraffin wax, and pull-opening powder.

[0032] 5. Water Its function is to participate in the hydrothermal reaction, and secondly to make the slurry have suitable fluidity and provide the necessary conditions for gas generation. In addition, it also plays a key role in the temperature and humidity control during the autoclaving process.

[0033] 6. Reinforced fiber powder Including basalt fiber powder, glass fiber powder and carbon fiber powder, etc. Its main function is to increase the toughness and crack resistance of autoclaved aerated concrete.

[0034] The production process includes the following steps: S1: manufacturing a door leaf frame (1) according to the outer dimensions of the door leaf, wherein the door leaf frame (1) is formed by cutting and folding a high-strength galvanized coil with a thickness of ≥2.0 mm, and welding a reinforcing lining plate with a thickness of ≥3.0 mm to the portion of the door leaf frame (1) where the hinge and the door closer are installed; Manufacturing tie steel bars (401), first steel bars (402), and second steel bars (403) according to the external dimensions of the door leaf frame (1), and performing anti-corrosion treatment on the surfaces of all the steel bars; Crossing the first steel bar (402) and the second steel bar (403), and welding them; Placing the welded first steel bars (402) and second steel bars (403) in the door leaf frame (1), and closing the outer frame on all sides; A tie bar is welded every 300 mm on the inner side of the door leaf frame (1); The welded first steel bar (402) and the second steel bar (403) are welded to appropriate positions of the tie bars. If a single layer is selected, the welding point should be located at the midpoint of the tie bar (401). If a double layer is selected, the welding point should be close to the bent portion (5) of the door leaf frame (1) and welded to the outer frame. Finally, a support base is installed at the bottom of the door leaf frame (1) to form a combined mold.

[0035] S2: According to the test data of the siliceous and calcareous raw materials entering the site, select one or more siliceous raw materials and mix them with an appropriate amount of regulating materials, add water for grinding, and prepare mortar. The amount of regulating materials is determined by the digestion rate of the calcareous materials, usually (20-90)% of the total amount of calcareous materials.

[0036] Test the moisture content of mortar, the calcium oxide content and dissolution time of calcium materials, and the initial and final setting time; Raw material combination The theoretical optimum value of the molar ratio of calcium to silicon in calcareous materials and siliceous materials is 5:6. Due to the influence of the effective ingredients in the raw materials and other factors, the mixing ratio is generally: The total amount of calcium materials is about: 28% ~ 40%, of which cement: lime is about (35% ~ 65%): (65% ~ 35%) The total amount of sand is about: 60% ~ 65% The amount of gas-generating material used is approximately: (0.5-0.7) kg / m3 Water to material ratio 0.52~0.62 According to the raw material mix ratio and the quantity of batch pouring, extract the corresponding weight of mortar, cement, lime, aluminum powder (paste) and the additional water required; Put the mortar and additional water into the mixer and stir for 30 minutes, add cement and lime and stir for 40 minutes, and finally add aluminum powder (paste) and fiber powder and stir for another 30 minutes.

[0037] S3: Calculate the required pouring slurry capacity according to the volume of the door cage and the gas generation; Inject the slurry into the mold; Use a vibrator to remove bubbles from the slurry.

[0038] S4: Send the mold to a curing room for gasification and curing. The curing room is controlled at (40-45)°C and the curing time is (150-180) minutes.

[0039] S5: Take the mold out of the resting room, use a steel wire to cut off the excess blank along the upper side of the metal frame of the mold, and clean it.

[0040] S6: The mold is transported to the autoclave for high temperature and high pressure curing. The curing process is divided into three stages: heating, constant temperature and cooling. The constant temperature is (8-10) hours, the pressure in the autoclave is controlled at (12.5-13.5) MPa, and the temperature is (185-195) °C.

[0041] S7: After the steaming and cooling is completed, the kettle door is opened to take out the mold, and the bottom support is removed, and the door leaf is formed in one piece.

[0042] S8: Grind and clean the one-piece door leaf, and apply curing agent on the surface of the autoclaved aerated concrete.

[0043] In addition, the present invention also provides a fireproof door, including a door frame 7, the door frame 7 is connected to the side of the door leaf frame 1 by arranging a fireproof hinge 8, and the door frame 7 and the top of the door leaf frame 1 are connected by arranging a fireproof door closer 9. The fireproof door includes any one of the above-mentioned one-piece molded door leaves.

[0044] The connection part between the door leaf frame 1 and the fireproof hinge 8 and the connection part between the door leaf frame 1 and the fireproof door closer 9 are designed with a reinforcing lining 10. The reinforcing lining 10 is designed to provide a higher connection strength between the door leaf frame 1 and the fireproof hinge 8 and the fireproof door closer 9, prevent the door leaf frame 1 from deforming when subjected to force, and ensure that the fire door maintains a high degree of stability and reliability during long-term use.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An integrally formed door leaf, comprising a door leaf frame (1), characterized in that: A filling area (2) is provided on the inner side of the door leaf frame (1); An autoclaved aerated concrete block (3) is provided in the filling area (2), and the autoclaved aerated concrete block (3) is tightly combined with the door leaf frame (1) to form an integrated structure; A reinforcing member (4) is provided inside the autoclaved aerated concrete block (3), and the reinforcing member (4) is used to enhance the structural strength of the door leaf.

2. The one-piece door leaf according to claim 1, characterized in that: The mass of the autoclaved aerated concrete block (3) inside the door leaf accounts for more than 95%, and the volume of the autoclaved aerated concrete block (3) inside the door leaf accounts for more than 99%.

3. The one-piece door leaf according to claim 1, characterized in that: The reinforcing member (4) comprises: A plurality of tie steel bars (401), wherein the tie steel bars (401) are distributed along the length direction and the width direction of the door leaf frame (1); A plurality of first steel bars (402) and second steel bars (403), wherein the first steel bars (402) and the second steel bars (403) are cross-arranged between the tie steel bars (401) at a predetermined angle and are connected to the tie steel bars (401).

4. The one-piece door leaf according to claim 1, characterized in that: The first steel bars (402) and the second steel bars (403) are arranged on the inner side of the door leaf frame (1) in a longitudinal and transverse manner respectively.

5. The one-piece door leaf according to claim 1, characterized in that: The center point of the tie steel bar (401) in the length direction is aligned with the center point of the thickness of the door leaf frame (1), and both ends of the first steel bar (402) are connected to the center point of the tie steel bar (401) in the length direction.

6. A process for manufacturing an integrally formed door leaf, comprising the following steps: S1: manufacturing a door leaf frame (1) and a reinforcing member (4) according to the outer dimensions of the door leaf, and assembling and fixing them together, and installing a support at the bottom of the door leaf frame (1) to form a combined mold, wherein the door leaf frame (1) is formed by cutting and folding a high-strength galvanized coil with a thickness of ≥2.0 mm; S2: adding siliceous material, calcareous material, regulating material, gas-generating material and water into a stirrer and stirring to form a slurry; S3: injecting the slurry in step S2 into the combined mold in step S1, and arranging bubbles in the slurry with a vibrator; S4: sending the mold to a rest room for gasification and rest, the rest room is controlled at 40-45° C., and the rest time is 150-180 min; S5: Take out the mold from the resting room, cut off the excess blank and clean it up; S6: transporting the mold to an autoclave for high temperature and high pressure curing. The curing process includes three stages: heating, constant temperature and cooling. The constant temperature is 8 to 10 hours. The pressure in the autoclave is controlled at 12.5 to 13.5 MPa and the temperature is 185-195°C. S7: After the steaming is completed, the kettle door is opened to take out the mold, and the bottom support is removed, and the door leaf is formed in one piece; S8: Grind and clean the one-piece door leaf, and apply curing agent on the surface of the autoclaved aerated concrete.

7. The manufacturing process of the integrally formed door leaf according to claim 6, characterized in that: A tie bar is welded every 300 mm on the inner side of the door leaf frame (1).

8. The manufacturing process of the integrally formed door leaf according to claim 6 is characterized in that: The total content of calcareous material and siliceous material in the slurry in S2 is 100%, of which calcareous material accounts for 30-40% of the total content, siliceous material accounts for 60-70% of the total content, gas-generating material is 0.5-0.7kg / m³, and the water-to-material ratio is 0.52-0.

62.

9. A fireproof door, comprising a door frame (7), wherein the door frame (7) is connected to the side of a door leaf frame (1) by means of a fireproof hinge (8), and the door frame (7) is connected to the top of the door leaf frame (1) by means of a fireproof door closer (9), characterized in that: The fireproof door comprises the integrally formed door leaf as described in any one of claims 1-8.

10. A fire door according to claim 10, characterized in that: The connection portion between the door leaf frame (1) and the fireproof hinge (8) and the connection portion between the door leaf frame (1) and the fireproof door closer (9) are both provided with a reinforcing lining plate (10).

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