Heat-insulation smoke-proof fireproof door

Abstract

The invention discloses a heat-insulation smoke-proof type fireproof door, and relates to the field of fireproof doors, the heat-insulation smoke-proof type fireproof door comprises a door frame and two door leaf bodies, the door frame and the door leaf bodies are connected through hinges, the two door leaf bodies are connected through automatic bolts, and glazing beads are arranged between the door frame and the door leaf bodies; according to the heat-insulation smoke-proof type fireproof door, through the action of the heating air outlet mechanism, a sodium bicarbonate solution is rapidly decomposed at high temperature to generate carbon dioxide gas; the process is quick in response, a large amount of carbon dioxide can be generated in time at the initial stage of the fire, and precious time is gained for fire suppression. And meanwhile, after the suction fan is started, carbon dioxide gas generated in the agent storage box can be rapidly pumped out through the gas outlet pipe, conveyed into the rotating pipe and sprayed out through the gas spraying holes in the outer wall of the rotating pipe, the gas is efficiently sprayed to the periphery of the door leaf body, the surrounding oxygen concentration is rapidly reduced, and fire spreading is effectively restrained.

Description

Technical Field

[0001] This invention relates to fire door technology, specifically to a heat-insulated and smoke-proof fire door. Background Technology

[0002] Fire, as a highly destructive disaster, causes enormous losses to human life and property every year. Among various fire scenarios, fires inside buildings are particularly common and pose a serious threat. When a fire occurs, the flames spread rapidly, and the high temperatures generated can damage the building structure and threaten people's lives. At the same time, the large amount of smoke produced during combustion contains toxic and harmful gases such as carbon monoxide and hydrogen cyanide. These gases can not only cause people to be poisoned and lose consciousness, but also reduce visibility and hinder the evacuation of people and the implementation of fire rescue work.

[0003] In buildings, fire doors play a crucial role as important fire-resistant partitions. They can prevent the spread of fire and smoke for a certain period of time, buying valuable time for evacuation and fire rescue, and effectively protecting the safety of people and property behind the door. Therefore, developing high-performance fire doors and improving their fire resistance, heat insulation, and smoke prevention performance is an important issue that urgently needs to be addressed in the field of building fire protection.

[0004] Traditional fire doors can only passively block the spread of fire and smoke during a fire, and cannot actively take measures to suppress the further development of the fire. When the fire is large and intense, traditional fire doors may be breached by flames in a short time, causing the fire to spread rapidly and failing to effectively perform their fire-resistant separation function. For example, in some large shopping mall fires, due to the large fire load and intense combustion, traditional fire doors may not be able to withstand the high temperature and flame impact, and quickly lose their fireproof function, allowing the fire to spread rapidly throughout the mall, causing serious casualties and property damage. Therefore, a heat-insulated and smoke-proof fire door is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a heat-insulated and smoke-proof fire door to solve the problem that traditional fire doors can only passively block the spread of fire and smoke during a fire, and cannot actively take measures to suppress the further development of the fire. When the fire is large and intense, traditional fire doors may be breached by flames in a short time, causing the fire to spread rapidly and failing to effectively perform their fire-resistant separation function.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a heat-insulated and smoke-proof fire door, comprising a door frame and two door leaf bodies, wherein the door frame and the door leaf bodies are connected by hinges, and the two door leaf bodies are connected by an automatic latch, wherein a glass pressure strip is provided between the door frame and the door leaf bodies, and a fire door lock, heat-insulated and fireproof glass, a fire sequencer, a nameplate and a warning sign are connected to the door leaf bodies, wherein a first fire-resistant expansion seal and a frame are provided between the door leaf bodies and the heat-resistant and fireproof glass, wherein a third fire-resistant expansion seal is connected between the bottom of the door leaf bodies and the door frame, wherein a fireproof door core board is provided inside the door leaf bodies, and a door leaf panel is connected to the outer wall of the door leaf bodies, wherein a second fire-resistant expansion seal and a cover plate are provided between the two door leaf bodies, and a door closer is provided between the top of the door leaf bodies and the door frame;

[0007] The door panel is equipped with a heating and gas exhaust mechanism, which heats and sprays carbon dioxide gas around the door panel to reduce the oxygen concentration and suppress fire. The mechanism includes a storage tank filled with sodium bicarbonate solution, with a liquid level line inside. A suction fan communicating with the interior is installed on the top of the outer wall of the storage tank. An exhaust pipe communicating with the interior is connected to the top of the suction fan. A rotating pipe communicating with the interior is rotatably connected to one side of the exhaust pipe. A rotating shaft is rotatably connected inside the exhaust pipe. A drive impeller is fixedly connected to the outer wall of the rotating shaft inside the exhaust pipe. A switch mechanism is provided on the inner wall of the storage tank for automatically turning on the suction fan.

[0008] Furthermore, the end of the rotating shaft away from the air outlet pipe is fixedly connected to one end of the rotating pipe, and the outer wall of the rotating pipe is provided with multiple air jet holes.

[0009] Furthermore, mounting plates are fixedly connected to both sides of the outer wall of the storage tank, and the mounting plates are fixedly connected to the door body by mounting bolts. The drive impeller and the air outlet pipe are set in corresponding directions.

[0010] Furthermore, the switching mechanism includes an installation cavity formed in the inner wall of the storage tank, a telescopic element connected to the bottom of the inner wall of the installation cavity, a sliding plate fixedly connected to the top of the telescopic element, a top rod fixedly connected to one side of the top of the sliding plate, a tactile switch provided at the top of the inner wall of the installation cavity, and an easily expandable gas filled between the bottom of the inner wall of the installation cavity and the sliding plate.

[0011] Furthermore, the outer wall of the sliding plate and the inner wall of the mounting cavity are slidably fitted together.

[0012] Furthermore, the push rod and the tactile switch are configured to be pressed in a corresponding manner.

[0013] Furthermore, the tactile switch is used to turn on the suction fan.

[0014] Furthermore, the storage tank is installed above the outer wall of the door body. Since the density of carbon dioxide is greater than that of air, placing the storage tank above the door body allows the carbon dioxide to be fully sprayed around the door body during injection. The outer wall of the storage tank has injection holes for adding more sodium bicarbonate solution when it is depleted.

[0015] Compared with existing technologies, the present invention provides a heat-insulating and smoke-proof fire door. Through the action of a heated venting mechanism, the storage tank in the heated venting mechanism is filled with sodium bicarbonate solution. When a fire occurs, the ambient temperature rises, the storage tank is heated, and the sodium bicarbonate solution decomposes rapidly at high temperature to produce carbon dioxide gas. This process is rapid and can generate a large amount of carbon dioxide in the early stage of a fire, buying valuable time to suppress the fire. Moreover, the amount of sodium bicarbonate solution does not exceed the height of the liquid level, providing sufficient space for the generation and release of carbon dioxide gas, ensuring that the gas can be generated and discharged smoothly.

[0016] The switch mechanism installed on the inner wall of the storage tank cleverly utilizes the properties of easily expandable gases. When the storage tank is heated, the easily expandable gas in the installation cavity expands due to the heat, pushing the sliding plate upward. The sliding plate drives the top rod to press the light-touch switch, thereby automatically starting the suction fan. After the suction fan starts, it can quickly extract the carbon dioxide gas generated in the storage tank through the exhaust pipe and deliver it to the rotating pipe. Then, it is sprayed out through multiple air jets on the outer wall of the rotating pipe, efficiently spraying around the door body, rapidly reducing the surrounding oxygen concentration, and effectively suppressing the spread of fire.

[0017] This fire door consists of a door frame and two door leaf bodies as its main structure. The door frame and door leaf bodies are connected by hinges, which ensures both the flexibility of opening and closing the door and the stability of the connection. The two door leaf bodies are connected by an automatic latch, which ensures that the door closes tightly in the event of a fire, effectively blocking the spread of fire and smoke. The glass strip installed between the door frame and the door leaf bodies not only fixes the heat-insulating fireproof glass, but also enhances the overall sealing of the door, preventing smoke from leaking out from the gaps.

[0018] The first fire-resistant expansion seal between the door body and the heat-insulating fireproof glass expands rapidly when heated, filling the gap between them, preventing the transfer of heat and smoke, and enhancing the heat insulation effect. The third fire-resistant expansion seal connecting the door body to the bottom of the door frame, as well as the second fire-resistant expansion seal and cover plate between the two door bodies, also expand at high temperatures, further sealing the gaps between the various parts of the door, forming multiple fire barriers, effectively blocking the spread of fire and smoke, and reducing the risk of damage to goods behind the door. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0021] Figure 2 Provided for embodiments of the present invention Figure 1 Schematic diagram of the cross-sectional structure at point AA;

[0022] Figure 3 Provided for embodiments of the present invention Figure 1 Schematic diagram of the cross-sectional structure at point BB;

[0023] Figure 4 Provided for embodiments of the present invention Figure 1 A schematic diagram of the cross-sectional structure at point CC;

[0024] Figure 5 A cross-sectional structural schematic diagram of the storage tank is provided for embodiments of the present invention;

[0025] Figure 6 Provided for embodiments of the present invention Figure 5 Enlarged structural diagram of point A.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Glass bead strip; 2. Automatic latch; 3. Door frame; 4. Door leaf body; 5. Fireproof door lock; 6. Hinges; 7. First fireproof expansion seal; 8. Fireproof door core board; 9. Door leaf panel; 10. Second fireproof expansion seal; 11. Insulated fireproof glass; 12. Frame; 13. Cover plate; 14. Third fireproof expansion seal; 15. Fire sequencer; 16. Nameplate; 17. Warning sign; 18. Door closer; 19. Storage tank; 191. Mounting plate; 192. Mounting bolt; 193. Sodium bicarbonate solution; 194. Liquid level line; 195. Suction fan; 196. Gas outlet pipe; 197. Rotating shaft; 198. Drive impeller; 199. Rotating tube; 20. Mounting cavity; 201. Telescopic element; 202. Sliding plate; 203. Push rod; 204. Tactile switch; 205. Expandable gas. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] As attached Figure 1 To be continued Figure 6 As shown:

[0030] Example 1:

[0031] This invention provides a heat-insulated and smoke-proof fire door, including a door frame 3 and two door leaf bodies 4. The door frame 3 and the door leaf bodies 4 are connected by a hinge 6, and the two door leaf bodies 4 are connected by an automatic latch 2. A glass pressure strip 1 is provided between the door frame 3 and the door leaf bodies 4. A fire door lock 5, heat-insulated and fireproof glass 11, a fire sequencer 15, a nameplate 16, and a warning sign 17 are connected to the door leaf bodies 4. A first fire-resistant expansion seal 7 and a frame 12 are provided between the door leaf bodies 4 and the heat-resistant and fireproof glass 11. A third fire-resistant expansion seal 14 is connected between the bottom of the door leaf bodies 4 and the door frame 3. A fireproof door core board 8 is provided inside the door leaf bodies 4. A door leaf panel 9 is connected to the outer wall of the door leaf bodies 4. A second fire-resistant expansion seal 10 and a cover plate 13 are provided between the two door leaf bodies 4. A door closer 18 is provided between the top of the door leaf bodies 4 and the door frame 3.

[0032] Working principle: This heat-insulated and smoke-proof fire door mainly consists of a door frame 3 and two door leaf bodies 4. The door frame 3 and the door leaf bodies 4 are connected by hinges 6 to realize the flexible opening and closing of the door leaf. The two door leaf bodies 4 are connected by automatic latches 2 to ensure the stability of the door when it is closed.

[0033] The glass strip 1 installed between the door frame 3 and the door body 4 not only serves to fix the heat-insulating and fireproof glass 11, but also enhances the sealing of the door structure; the fireproof door lock 5 connected to the door body 4 is used for daily opening and closing operations, and also has a fireproof function, maintaining normal operation in the event of a fire; the fire sequencer 15 ensures that the two door leaves open and close in a certain order, avoiding the impact of disordered order on the normal use and fireproof effect of the door; the nameplate 16 and the warning sign 17 provide relevant information and warnings, facilitating personnel identification and operation;

[0034] The first fireproof expansion seal 7 and the frame 12 are provided between the door body 4 and the heat-insulating fireproof glass 11. Under the high temperature environment of a fire, the first fireproof expansion seal 7 expands when heated, filling the gap between the door body 4 and the heat-insulating fireproof glass 11, preventing the transfer of smoke and heat, and enhancing the heat insulation effect; the frame 12 plays the role of supporting and fixing the heat-insulating fireproof glass 11, improving the overall strength of the door.

[0035] The third fireproof expansion seal 14 connecting the bottom of the door leaf body 4 and the door frame 3, as well as the second fireproof expansion seal 10 and the cover plate 13 set between the two door leaf bodies 4, also expand when heated, further sealing the gaps between the various parts of the door body, effectively blocking the spread of fire and smoke; the fireproof door core board 8 set inside the door leaf body 4 and the door leaf panel 9 connected to the outer wall are both made of fireproof materials, with good heat insulation performance, which can reduce the temperature of the area behind the door during a fire and reduce damage to goods; the door closer 18 set between the top of the door leaf body 4 and the door frame 3 ensures that the door can automatically close after being opened, maintaining the fireproof and heat-insulating state of the door;

[0036] With the above technical solution, the main structure of this fire door consists of a door frame 3 and two door leaf bodies 4. The door frame 3 and the door leaf bodies 4 are connected by hinges 6, which not only ensures the flexibility of the door opening and closing, but also makes the connection stable. The two door leaf bodies 4 are connected by an automatic latch 2, which can ensure that the door is tightly closed in the event of a fire, effectively blocking the spread of fire and smoke. The glass strip 1 installed between the door frame 3 and the door leaf bodies 4 not only fixes the heat-insulating fireproof glass 11, but also enhances the overall sealing of the door and prevents smoke from leaking out of the gaps.

[0037] The first fireproof expansion seal 7 installed between the door body 4 and the heat-insulating fireproof glass 11 expands rapidly when heated, filling the gap between the two, preventing the transfer of heat and smoke, and enhancing the heat insulation effect; the third fireproof expansion seal 14 connecting the bottom of the door body 4 and the door frame 3, as well as the second fireproof expansion seal 10 and the cover plate 13 installed between the two door bodies 4, also expand at high temperature, further sealing the gaps between the various parts of the door, forming multiple fire barriers, effectively blocking the spread of fire and smoke, and reducing the risk of damage to goods behind the door;

[0038] The fireproof door core panel 8 inside the door body 4 and the door panel 9 connected to the outer wall are both made of materials with excellent fire resistance. These materials have good heat insulation and flame retardancy, and can maintain structural stability for a long time in a fire, prevent heat transfer, provide reliable fire protection for the area behind the door, and reduce the losses caused by the fire.

[0039] The door closer 18 installed between the top of the door leaf body 4 and the door frame 3 can automatically close the door after it is opened, ensuring that the door is always in a closed state. In the event of a fire, even if people neglect to close the door, the door closer 18 can still play a role in maintaining the fireproof and heat insulation function of the door and effectively blocking the spread of fire and smoke.

[0040] Example 2:

[0041] This embodiment is basically the same as the previous embodiment, except that a heating and gas exhaust mechanism is provided on the door body 4. The heating and gas exhaust mechanism is used to heat and spray carbon dioxide gas around the door body 4 to reduce the oxygen concentration around the door body 4 and suppress the occurrence of fire. The heating and gas exhaust mechanism includes a storage tank 19, which is filled with sodium bicarbonate solution 193. A liquid level line 194 is provided inside the storage tank 19. A suction fan 195 communicating with the inside is installed on the top of the outer wall of the storage tank 19. The top of the suction fan 195 is connected to an exhaust pipe 196 communicating with the inside. A rotating pipe 199 communicating with the inside is rotatably connected to one side of the exhaust pipe 196. A rotating shaft 197 is rotatably connected inside the exhaust pipe 196. A drive impeller 198 is fixedly connected to the outer wall of the rotating shaft 197 inside the exhaust pipe 196. A switch mechanism is provided on the inner wall of the storage tank 19. The switch mechanism is used to automatically open the suction fan 195.

[0042] The invention is further described in detail below. The end of the rotating shaft 197 away from the exhaust pipe 196 is fixedly connected to one end of the rotating pipe 199. The outer wall of the rotating pipe 199 is provided with multiple air jet holes. Mounting plates 191 are fixedly connected to both sides of the outer wall of the storage tank 19. The mounting plates 191 are fixedly connected to the door body 4 by mounting bolts 192. The exhaust direction of the drive impeller 198 is corresponding to that of the exhaust pipe 196. The storage tank 19 is installed above the outer wall of the door body 4. Since the density of carbon dioxide is greater than that of air, placing the storage tank 19 above the door body 4 allows the carbon dioxide to be fully sprayed around the door body 4 during carbon dioxide injection. The outer wall of the storage tank 19 is provided with injection holes for adding sodium bicarbonate solution 193 to the inside of the storage tank 19 when it is exhausted.

[0043] The switching mechanism includes a mounting cavity 20 formed in the inner wall of the storage tank 19. A telescopic element 201 is connected to the bottom of the inner wall of the mounting cavity 20. A sliding plate 202 is fixedly connected to the top of the telescopic element 201. A top rod 203 is fixedly connected to one side of the top of the sliding plate 202. A tactile switch 204 is provided at the top of the inner wall of the mounting cavity 20. An easily expandable gas 205 is filled between the bottom of the inner wall of the mounting cavity 20 and the sliding plate 202.

[0044] The present invention is further described in detail as follows: the outer side wall of the sliding plate 202 and the inner side wall of the mounting cavity 20 are slidably fitted together; the top rod 203 and the tactile switch 204 are correspondingly pressed together; the tactile switch 204 is used to turn on the suction fan 195.

[0045] Working principle: When a fire occurs, the ambient temperature rises, and the storage tank 19 is heated. The sodium bicarbonate solution 193 filled inside undergoes a chemical reaction under high temperature to produce carbon dioxide gas. In order to ensure that there is enough space for the generation and release of carbon dioxide gas, the filling amount of sodium bicarbonate solution 193 does not exceed the height of the liquid level line 194, so that there is sufficient space between the solution and the inner wall of the storage tank 19.

[0046] A switch mechanism installed on the inner wall of the storage tank 19 is used to automatically turn on the suction fan 195. The specific process is as follows: When the storage tank 19 is heated, the expandable gas 205 inside the mounting cavity 20 expands due to heat. Since the outer wall of the sliding plate 202 and the inner wall of the mounting cavity 20 are slidably fitted, the pressure generated by the expansion of the expandable gas 205 pushes the sliding plate 202 upward. The top rod 203, which is fixedly connected to one side of the top of the sliding plate 202, moves upward accordingly. Since the top rod 203 and the tactile switch 204 are correspondingly pressed, the top rod 203 presses the tactile switch 204 during the upward movement. After the tactile switch 204 is triggered, the suction fan 195 is turned on. The suction fan 195 is installed on the top of the outer wall of the storage tank 19 and communicates with its interior. It starts working after being started.

[0047] After the suction fan 195 is started, the carbon dioxide gas generated by heating inside the storage tank 19 is drawn into the interior of the rotating pipe 199 through the exhaust pipe 196 under the action of the suction fan 195. The rotating pipe 199 is rotatably connected to one side of the exhaust pipe 196, and multiple air jet holes are opened on the outer wall of the rotating pipe 199. Carbon dioxide gas is ejected from these air jet holes to reduce the oxygen concentration around the door body 4, thereby suppressing the spread of fire.

[0048] Simultaneously, when gas is discharged from the vent pipe 196, the driving impeller 198, which is fixedly connected to the outer wall of the rotating shaft 197 and located inside the vent pipe 196, is agitated by the blowing action of the gas. Since the driving impeller 198 and the vent pipe 196 are arranged in the same direction, the blowing action of the gas causes the driving impeller 198 to rotate, which in turn drives the rotating shaft 197 to rotate. The end of the rotating shaft 197 away from the vent pipe 196 is fixedly connected to the end of the rotating pipe 199, so the rotation of the rotating shaft 197 drives the rotating pipe 199 to rotate. In this way, the carbon dioxide gas rotates with the rotating pipe 199 during the spraying process, increasing the spray range around the door body 4 and further reducing the spread of fire around the door body 4.

[0049] The storage tank 19 is fixedly connected to the door body 4 via mounting plates 191 fixedly connected to both sides of the outer wall using mounting bolts 192. The installation is secure and easy to disassemble and maintain. Considering that the density of carbon dioxide is greater than that of air, the storage tank 19 is installed on the upper part of the outer wall of the door body 4. When carbon dioxide is injected, it can fully cover the area around the door body 4, improving the smoke suppression and fire extinguishing effect. The outer wall of the storage tank 19 has an injection hole. When the sodium bicarbonate solution 193 is exhausted, it can be added to the inside of the storage tank 19 through the injection hole to ensure that the heating and gas exhaust mechanism can continue to work normally.

[0050] With the above technical solution, the storage tank 19 in the heating and gas venting mechanism is filled with sodium bicarbonate solution 193. When a fire occurs, the ambient temperature rises, the storage tank 19 is heated, and the sodium bicarbonate solution 193 decomposes rapidly at high temperature to produce carbon dioxide gas. This process is rapid and can generate a large amount of carbon dioxide in the early stage of a fire, buying valuable time to suppress the fire. Moreover, the amount of sodium bicarbonate solution 193 does not exceed the height of the liquid level line 194, providing sufficient space for the generation and release of carbon dioxide gas, ensuring that the gas can be generated and discharged smoothly.

[0051] The switch mechanism installed on the inner wall of the storage tank 19 cleverly utilizes the properties of the easily expandable gas 205. When the storage tank 19 is heated, the easily expandable gas 205 in the mounting cavity 20 expands due to the heat, pushing the sliding plate 202 to move upward. The sliding plate 202 drives the top rod 203 to press the light touch switch 204, thereby automatically starting the suction fan 195. After the suction fan 195 is started, it can quickly extract the carbon dioxide gas generated in the storage tank 19 through the exhaust pipe 196 and transport it to the rotating pipe 199. Then, it is sprayed out through multiple air jet holes on the outer wall of the rotating pipe 199, which efficiently sprays the area around the door body 4, rapidly reducing the surrounding oxygen concentration and effectively suppressing the spread of fire.

[0052] The drive impeller 198 inside the exhaust pipe 196 corresponds to the exhaust direction. When carbon dioxide gas is ejected from the exhaust pipe 196, the gas blows the drive impeller 198 to rotate, which in turn drives the rotating shaft 197 and the rotating pipe 199 to rotate. During the rotation, the multiple jet holes on the outer wall of the rotating pipe 199 can spray carbon dioxide gas in all directions and at multiple angles to the area around the door body 4, which greatly increases the spray range of carbon dioxide gas and effectively covers the area around the door body 4, further reducing the possibility of fire spread.

[0053] The storage tank 19 is installed on the upper outer wall of the door body 4. Since the density of carbon dioxide is greater than that of air, this installation method allows the carbon dioxide to sink naturally when it is sprayed, fully covering the area around the door body 4 and improving the smoke suppression and fire extinguishing effect. At the same time, the injection hole on the outer wall of the storage tank 19 makes it convenient to add sodium bicarbonate solution 193 when it is exhausted, ensuring that the heating and gas outlet mechanism can continue to work normally and providing long-term smoke suppression and fire extinguishing protection for the fire door.

[0054] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A heat-insulated and smoke-proof fire door, comprising a door frame (3) and two door leaf bodies (4), characterized in that, The door frame (3) and the door leaf body (4) are connected by a hinge (6), and the two door leaf bodies (4) are connected by an automatic latch (2). A glass strip (1) is provided between the door frame (3) and the door leaf body (4). A fireproof door lock (5), heat-insulating fireproof glass (11), a fire-resistant sequencer (15), a nameplate (16), and a warning sign (17) are connected to the door leaf body (4). A third door lock is provided between the door leaf body (4) and the heat-insulating fireproof glass (11). A fireproof expansion seal (7) and a frame (12) are provided. A third fireproof expansion seal (14) is connected between the bottom of the door body (4) and the door frame (3). A fireproof door core board (8) is provided inside the door body (4). A door panel (9) is connected to the outer wall of the door body (4). A second fireproof expansion seal (10) and a cover plate (13) are provided between the two door bodies (4). A door closer (18) is provided between the top of the door body (4) and the door frame (3). A heating and gas exhaust mechanism is provided on the door body (4). The heating and gas exhaust mechanism is used to heat and spray carbon dioxide gas around the door body (4). The heating and gas exhaust mechanism includes a storage tank (19). The storage tank (19) is filled with sodium bicarbonate solution (193). A liquid level line (194) is provided inside the storage tank (19). A suction fan (195) communicating with the inside is installed on the top of the outer wall of the storage tank (19). The top of the suction fan (195) An air outlet pipe (196) is connected to the air outlet pipe (196) and communicates with the air outlet pipe (196). A rotating pipe (199) is rotatably connected to the air outlet pipe (196) and communicates with the air outlet pipe (196). A rotating shaft (197) is rotatably connected inside the air outlet pipe (196). A drive impeller (198) is fixedly connected to the outer wall of the rotating shaft (197) inside the air outlet pipe (196). A switch mechanism is provided on the inner wall of the storage tank (19). The switch mechanism is used to automatically open the suction fan (195).

2. The heat-insulating and smoke-proof fire door according to claim 1, characterized in that, The end of the rotating shaft (197) away from the air outlet pipe (196) is fixedly connected to one end of the rotating pipe (199), and the outer wall of the rotating pipe (199) is provided with multiple air jet holes.

3. The heat-insulating and smoke-proof fire door according to claim 1, characterized in that, The storage tank (19) has mounting plates (191) fixedly connected to both sides of its outer wall. The mounting plates (191) are fixedly connected to the door body (4) by mounting bolts (192). The exhaust direction of the drive impeller (198) is corresponding to that of the exhaust pipe (196).

4. A heat-insulating and smoke-proof fire door according to claim 1, characterized in that, The switching mechanism includes an installation cavity (20) formed in the inner wall of the storage tank (19). A telescopic element (201) is connected to the bottom of the inner wall of the installation cavity (20). A sliding plate (202) is fixedly connected to the top of the telescopic element (201). A top rod (203) is fixedly connected to one side of the top of the sliding plate (202). A tactile switch (204) is provided at the top of the inner wall of the installation cavity (20). An easily expandable gas (205) is filled between the bottom of the inner wall of the installation cavity (20) and the sliding plate (202).

5. A heat-insulating and smoke-proof fire door according to claim 4, characterized in that, The outer wall of the sliding plate (202) and the inner wall of the mounting cavity (20) are slidably fitted together.

6. A heat-insulating and smoke-proof fire door according to claim 4, characterized in that, The top rod (203) and the tactile switch (204) are configured to be pressed in a corresponding manner.

7. A heat-insulating and smoke-proof fire door according to claim 4, characterized in that, The tactile switch (204) is used to turn on the suction fan (195).

8. A heat-insulating and smoke-proof fire door according to claim 4, characterized in that, The storage tank (19) is installed on the outer wall of the door body (4), and the outer wall of the storage tank (19) is provided with an injection hole.

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