Heat-resistant and deformation-resistant metal fireproof door
By incorporating symmetrically distributed water pipes and rotating support plates into the metal fire door, effective cooling and uniform distribution of external forces are achieved during a fire. This solves the deformation problem of heat-resistant and deformation-resistant metal fire doors at high temperatures, extends service life, and improves structural stability and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-03
AI Technical Summary
Existing heat-resistant and deformation-resistant metal fire doors are not easy to cool down when exposed to prolonged exposure to heat, which leads to deformation and affects their service life and structural stability.
A heat-resistant and deformation-resistant metal fire door was designed. It adopts a water inlet pipe and multiple water outlet pipes symmetrically distributed, combined with a temperature sensor and a cooling tank. The cooling is achieved by uniformly distributing the coolant, and the external force is evenly distributed by a rotating support plate and a rotating seat, thereby enhancing the structural stability.
It effectively prevents the door frame from deforming due to high temperatures, extends its service life, and improves the overall thermal insulation performance and safety of the structure, ensuring the stability and protective performance of the door.
Smart Images

Figure CN224079004U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metal fire door technology, and in particular to a heat-resistant and deformation-resistant metal fire door. Background Technology
[0002] Metal fire doors, especially steel fire doors, are an important fire safety facility widely used in various buildings, such as commercial office buildings, industrial plants, warehouses, hotels, and hospitals. Their main function is to prevent the spread of flames, heat, and toxic fumes during a fire, buying more time for evacuation and firefighting efforts. Fire doors are doors that can meet the requirements of fire resistance stability, integrity, and insulation for a certain period of time. They are fire-resistant partitions with a certain degree of fire resistance, installed in fire compartments, evacuation stairwells, vertical shafts, etc., specifically used in buildings to isolate fire sources. They play a vital role in firefighting, providing people with an escape route in the event of a fire.
[0003] An existing type of heat-resistant and deformation-resistant metal fire door, after the equipment has been installed and put into use by the staff, is not convenient to be cooled down by the equipment itself when the metal fire door is exposed to heat for a long time. This causes the metal fire door to easily deform and affect its service life. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a heat-resistant and deformation-resistant metal fire door.
[0005] This utility model is achieved by the following technical solution: a heat-resistant and deformation-resistant metal fire door, including a door frame, a fire door panel is hinged inside the door frame, heat insulation plates are fixedly connected to the front and rear ends of the fire door panel, and a protective plate is fixedly connected to the surface of the heat insulation plate.
[0006] Temperature sensors are fixedly connected to the front and rear ends of the door frame. A water inlet pipe is fixedly connected to the inside of the door frame. A water flow pipe is fixedly connected to the surface of the water inlet pipe. A cooling groove is opened inside the door frame. A rotating groove is opened inside the door frame. A rotating support plate is rotatably connected inside the door frame. A rotating seat is rotatably connected to the surface of the rotating support plate. A lower bearing assembly is threadedly connected inside the rotating seat.
[0007] As a further improvement to the above solution, the number of the heat insulation board and the protective board is set to two, and the two heat insulation boards and the protective board are symmetrically distributed front and back with the fireproof door panel as the center.
[0008] Through the above technical solution, the protective panels are also symmetrically distributed around the fireproof door panel, and work in conjunction with the heat insulation panel to provide additional protection on the basis of heat insulation. The protective panels can resist the impact of some foreign objects in the fire, prevent these foreign objects from damaging the heat insulation panel or directly hitting the fireproof door panel, and improve the overall safety of the door.
[0009] As a further improvement to the above solution, the surface of the heat insulation board is in contact with the inner wall surface of the door frame, and the surface of the protective board is in contact with the inner wall surface of the door frame.
[0010] Through the above technical solution, the surface of the heat insulation board is in contact with the inner wall surface of the door frame. This close contact can prevent heat from leaking out from the gap between the heat insulation board and the door frame, ensuring the integrity of the heat insulation effect and improving the heat insulation performance of the entire door structure.
[0011] As a further improvement to the above scheme, the number of water pipes is set to several, and each pair is grouped together, with the several water pipes symmetrically distributed back and forth around the water inlet pipe.
[0012] As a further improvement to the above solution, the bottom of the water pipe contacts the top surface of the cooling tank, and the number of the rotating support plates is set to several, with each pair forming a group, and the two rotating support plates are symmetrically distributed front and back around the door frame.
[0013] As a further improvement to the above solution, the surface of the supporting component is in contact with the surface of the protective plate, and the rotating seat is located at the rear end of the protective plate.
[0014] As a further improvement to the above scheme, the number of the rotating support plate and the rotating seat is set to several, and the several rotating support plates and rotating seats are symmetrically distributed with the door frame as the center.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] This invention features an inlet pipe connected to multiple outlet pipes, with the outlet pipes symmetrically distributed around the inlet pipe. This distribution ensures that the coolant is evenly distributed inside the door frame. By incorporating a temperature sensor, the coolant can flow through the outlet pipes in the event of a fire. Since the bottom of the outlet pipe is in contact with the top surface of the cooling tank, the coolant can fully exert its cooling effect within the cooling tank, carrying away heat from inside the door frame, preventing the door frame from deforming due to high temperatures, and increasing the service life of the metal door panel.
[0017] This invention, by setting up a symmetrical distribution of rotating support plates and rotating seats, enables the door to withstand external forces, ensuring that the force is evenly distributed across the door frame and fireproof door panel, thereby improving the overall structural stability of the door. By setting the surface of the lower load-bearing component to contact the protective plate, the pressure borne by the protective plate can be shared, preventing the protective plate from being damaged due to excessive force, thus maintaining the overall protective performance of the door. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the rear view structure of this utility model;
[0020] Figure 3 This is an enlarged schematic diagram of the structure at point A of this utility model;
[0021] Figure 4 This is a schematic diagram of the side anatomical structure of this utility model;
[0022] Figure 5 This is a frontal anatomical diagram of the present invention.
[0023] Explanation of key symbols:
[0024] 1. Door frame; 2. Fireproof door panel; 3. Heat insulation board; 4. Protective board; 5. Temperature sensor; 6. Water inlet pipe; 7. Water outlet pipe; 8. Cooling groove; 9. Rotating groove; 10. Rotating support plate; 11. Rotating seat; 12. Lower load-bearing assembly. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0026] Example:
[0027] Please combine Figure 1-5 The embodiment of the heat-resistant and deformation-resistant metal fire door includes a door frame 1, a fire door panel 2 is hinged inside the door frame 1, a heat insulation plate 3 is fixedly connected to the front and rear ends of the fire door panel 2, and a protective plate 4 is fixedly connected to the surface of the heat insulation plate 3.
[0028] Temperature sensors 5 are fixedly connected to the front and rear ends of the door frame 1. A water inlet pipe 6 is fixedly connected inside the door frame 1. A water flow pipe 7 is fixedly connected to the surface of the water inlet pipe 6. A cooling groove 8 and a rotating groove 9 are opened inside the door frame 1. A rotating support plate 10 is rotatably connected inside the door frame 1. A rotating seat 11 is rotatably connected to the surface of the rotating support plate 10. A lower bearing assembly 12 is threadedly connected inside the rotating seat 11. By setting the water inlet pipe 6 to multiple water flow pipes 7, and the water flow pipes 7 are symmetrically distributed front and rear with the water inlet pipe 6 as the center, this distribution method can make the coolant evenly distributed inside the door frame 1. By setting the temperature sensor, when a fire occurs, the coolant can flow through the water flow pipes 7. Since the bottom of the water flow pipe 7 is in contact with the top surface of the cooling groove 8, the coolant can fully exert its cooling effect in the cooling groove 8, remove the heat inside the door frame 1, prevent the door frame 1 from deforming due to high temperature, and increase the service life of the metal door panel.
[0029] The number of heat insulation board 3 and protective board 4 is set to two, and the two heat insulation board 3 and protective board 4 are symmetrically distributed front and back with the fire door board 2 as the center.
[0030] The protective panel 4 is also symmetrically distributed around the fire door panel 2, and works in conjunction with the heat insulation panel 3 to provide additional protection on the basis of heat insulation. The protective panel 4 can resist the impact of some foreign objects in the fire, prevent these foreign objects from damaging the heat insulation panel 3 or directly hitting the fire door panel 2, and improve the overall safety of the door.
[0031] The surface of the heat insulation board 3 is in contact with the inner wall surface of the door frame 1, and the surface of the protective board 4 is in contact with the inner wall surface of the door frame 1.
[0032] The surface of the heat insulation board 3 is in contact with the inner wall surface of the door frame 1. This close contact can prevent heat from leaking out from the gap between the heat insulation board 3 and the door frame 1, ensuring the integrity of the heat insulation effect and improving the heat insulation performance of the entire door structure.
[0033] The number of water pipes 7 is set to several, and each pair is grouped together. The several water pipes 7 are symmetrically distributed around the water inlet pipe 6.
[0034] The bottom of the water pipe 7 contacts the top surface of the cooling tank 8. The number of rotating support plates 10 is set to several, and two rotating support plates 10 are arranged in a group. The two rotating support plates 10 are symmetrically distributed back and forth with the door frame 1 as the center.
[0035] The surface of the lower support component 12 is in contact with the surface of the protective plate 4, and the rotating seat 11 is located at the rear end of the protective plate 4.
[0036] The number of rotating support plates 10 and rotating seats 11 is set to several, and the several rotating support plates 10 and rotating seats 11 are symmetrically distributed with the door frame 1 as the center. By setting the rotating support plates 10 and rotating seats 11 in this symmetrical distribution, the force can be evenly distributed in various parts of the door frame 1 and the fireproof door panel 2 when the door is subjected to external force, which improves the overall structural stability of the door. By setting the surface of the lower bearing component 12 to contact the protective plate 4, the pressure borne by the protective plate 4 can be shared, preventing the protective plate 4 from being damaged due to excessive force, thereby maintaining the overall protective performance of the door.
[0037] The implementation principle of a heat-resistant and deformation-resistant metal fire door in this application embodiment is as follows: By setting an inlet pipe 6 connected to multiple water pipes 7, and the water pipes 7 are symmetrically distributed front and back with the inlet pipe 6 as the center, this distribution method can make the coolant evenly distributed inside the door frame 1. By setting a temperature sensor, when a fire occurs, the coolant can flow through the water pipes 7. Since the bottom of the water pipe 7 is in contact with the top surface of the cooling tank 8, the coolant can fully exert its cooling effect in the cooling tank 8, remove the heat inside the door frame 1, prevent the door frame 1 from deforming due to high temperature, and increase the service life of the metal door panel. By setting a symmetrical distribution of rotating support plate 10 and rotating seat 11, the door can withstand external forces, and the force can be evenly distributed in various parts of the door frame 1 and the fire door panel 2, improving the overall structural stability of the door. By setting the surface of the lower bearing component 12 to contact the protective plate 4, the pressure borne by the protective plate 4 can be shared, preventing the protective plate 4 from being damaged due to excessive force, thereby maintaining the overall protective performance of the door.
[0038] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A heat resistant, deformation resistant metal fire door, characterized in that, Including door frame (1), the inside of door frame (1) is hinged with fireproof door plate (2), and the front and rear ends of fireproof door plate (2) are fixedly connected with heat insulation plate (3), and the surface of heat insulation plate (3) is fixedly connected with protection plate (4); The front and rear ends of door frame (1) are fixedly connected with temperature sensor (5), the inside of door frame (1) is fixedly connected with water inlet pipe (6), the surface of water inlet pipe (6) is fixedly connected with water flow pipe (7), the inside of door frame (1) is provided with cooling groove (8), the inside of door frame (1) is provided with rotating groove (9), the inside of door frame (1) is rotatably connected with rotating support plate (10), the surface of rotating support plate (10) is rotatably connected with rotating seat (11), and the inside of rotating seat (11) is screw-connected with lower bearing assembly (12).
2. A heat resistant, deformation resistant metal fire door as defined in claim 1, wherein: The number of heat insulation plate (3) and protection plate (4) is two, and two heat insulation plates (3) and protection plates (4) are symmetrically distributed around fireproof door plate (2).
3. A heat resistant, deformation resistant metal fire door as defined in claim 1, wherein: The surface of heat insulation plate (3) is in contact with the inner wall surface of door frame (1), and the surface of protection plate (4) is in contact with the inner wall surface of door frame (1).
4. A fire door of claim 1, wherein: The number of water flow pipe (7) is several, and every two is a group, and several water flow pipes (7) are symmetrically distributed around water inlet pipe (6).
5. A heat resistant, deformation resistant metal fire door as defined in claim 1, wherein: The bottom of water flow pipe (7) is in contact with the top surface of cooling groove (8), the number of rotating support plate (10) is several, and every two is a group, and two rotating support plates (10) are symmetrically distributed around door frame (1).
6. A heat resistant, deformation resistant metal fire door as defined in claim 1, wherein: The surface of bearing assembly (12) is in contact with the surface of protection plate (4), and rotating seat (11) is located at the rear end of protection plate (4).
7. A fire door of claim 1, wherein: The number of rotating support plate (10) and rotating seat (11) is several, and several rotating support plates (10) and rotating seats (11) are symmetrically distributed around door frame (1).