Steel-wood composite heat insulation fireproof door

Abstract

The invention discloses a steel-wood composite heat insulation fireproof door, and relates to the technical field of fireproof doors. The steel-wood composite heat insulation fireproof door comprises a mounting frame structure, a fireproof door leaf structure is hinged to the inner side of the mounting frame structure, a protective observation window structure is arranged on the inner side of the fireproof door leaf structure, and a locking structure is arranged on the front side of the mounting frame structure. Through the arrangement of the fireproof door leaf structure and the combined design of the fireproof filling ceramsite layer, the fireproof perlite plate layer, the rock wool layer, the heat insulation cotton layer and the flame-retardant sealing layer in the fireproof door leaf structure, the strength and stability of the door body are enhanced, the heat insulation effect is remarkably improved, the fireproof filling ceramsite layer and the fireproof perlite plate layer serve as inner layer materials, and the fireproof filling ceramsite layer and the fireproof perlite plate layer serve as outer layer materials; the door body has excellent fire resistance and heat insulation performance, invasion of high-temperature flames and heat can be effectively blocked, the rock wool layer and the heat insulation cotton layer serve as middle layer materials, the heat insulation effect of the door body is further improved, and heat transfer is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of fire doors, in particular to a steel-wood composite heat-insulating fire door. Background Art

[0002] With the progress of society, people's fire awareness has gradually improved, and fire doors have become important fire-fighting equipment in the construction industry. Fire doors refer to doors that can meet the requirements of fire resistance, stability, integrity and thermal insulation within a certain period of time. In addition to the functions of ordinary doors, fire doors can also prevent the spread of fire and smoke. They are generally installed in fire compartments, evacuation stairwells, and vertical shafts. They can prevent the spread of fire within a certain period of time and ensure the evacuation of personnel.

[0003] Steel-wood fire doors are a combination of metal and wood, offering the strength of metal and the aesthetics of wood. Primarily composed of steel plates and a wooden frame, they offer strong fire resistance, effectively isolating the spread of fire and safeguarding personnel and property.

[0004] Fire doors are often equipped with observation windows to allow firefighters to observe the fire through them. However, when a fire occurs, the glass will be smoked by the flames for a long time, affecting its light transmittance. At this time, firefighters will not be able to observe the fire normally through the observation window. Summary of the Invention

[0005] The present invention provides a steel-wood composite heat-insulating fireproof door to solve the problems in the background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a steel-wood composite heat-insulating fireproof door, comprising a mounting frame structure, a fireproof door leaf structure hingedly connected to the inner side of the mounting frame structure, a protective observation window structure provided on the inner side of the fireproof door leaf structure, and a locking structure provided on the front side of the mounting frame structure;

[0007] The fireproof door leaf structure includes an external frame, an installation cavity is opened on the inner side of the external frame, and a door panel body is arranged inside the installation cavity;

[0008] The door panel body includes a fireproof filling ceramsite layer, a fireproof perlite board layer, a rock wool layer, a heat insulation cotton layer and a flame retardant sealing layer, and the fireproof filling ceramsite layer, the fireproof perlite board layer, the rock wool layer, the heat insulation cotton layer and the flame retardant sealing layer are arranged in sequence from back to front;

[0009] The protective observation window structure includes an embedded frame connected to the inner side of the door panel body, an installation recess is provided inside the embedded frame, and the inner cavity of the installation recess is divided into an installation groove and a movable groove by a dividing strip;

[0010] The inner side of the installation groove is movably connected with the tempered glass, the inner side of the movable groove is fixedly installed with a fixed guard plate and slidably connected with a movable guard plate.

[0011] Furthermore, the installation frame structure includes an installation door cover, an installation door hole is opened inside the installation door cover, a protective door frame is provided inside the installation door hole, and a fire-proof expansion seal is provided on the inner side of the protective door frame.

[0012] Furthermore, a connecting hinge and a rebound hydraulic cylinder are provided on the outer side of the external frame, and the external frame is hinged to the installation door hole of the door cover through the connecting hinge and the rebound hydraulic cylinder.

[0013] Furthermore, an alarm, a smoke sensor and a door handle are fixedly installed on the outer side of the door panel body, and a lock is provided on the inner side of the door panel body.

[0014] Furthermore, the rock wool layer is made of basalt material and has a thickness of 3cm-5cm; the heat insulating wool layer is made of ceramic fiber material and has a thickness of 0.5cm-1cm.

[0015] Furthermore, the flame retardant sealing layer is made of graphite material and has a thickness of 1 cm-3 cm. A fire retardant coating is provided on the side of the flame retardant sealing layer away from the heat insulating cotton layer.

[0016] Furthermore, a sliding groove is provided on the surface of the embedded frame, and a pull rod is installed on the surface of the movable guard plate, and the pull rod extends to the outside of the embedded frame through the sliding groove.

[0017] Furthermore, the locking structure includes two sets of hinged seats, which are fixedly mounted on the outer sides of the mounting frame structure respectively, and the inner sides of the two sets of hinged seats are rotatably connected to the rotating plate and the movable plate respectively.

[0018] Furthermore, a reinforcing rib is fixedly installed between the two rotating plates, and the inner side of the movable plate is connected to a locking screw by rotating the handle.

[0019] Furthermore, a locking hole is formed at one end of the rotating plate away from the hinge seat, and an end of the locking screw away from the turning handle extends to the inner side of the locking hole.

[0020] Compared with the prior art, the present invention provides a steel-wood composite heat-insulating fireproof door with the following features:

[0021] Beneficial effects:

[0022] 1. This steel-wood composite insulated fire door features a fire-resistant door leaf structure. The combined design of a fire-resistant ceramsite layer, a fire-resistant perlite board layer, a rock wool layer, a thermal insulation layer, and a flame-retardant sealing layer not only enhances the door's strength and stability but also significantly improves its thermal insulation. The fire-resistant ceramsite layer and the fire-resistant perlite board layer, as the inner layer materials, possess excellent fire resistance and thermal insulation properties, effectively blocking high-temperature flames and heat. The rock wool layer and thermal insulation layer, as the middle layer materials, further enhance the door's thermal insulation and reduce heat transfer. The flame-retardant sealing layer, as the outer layer material, not only has flame-retardant properties but also effectively prevents the spread of fire and smoke.

[0023] 2. This steel-wood composite heat-insulating fire door, by setting up a protective observation window structure and utilizing a combination of an embedded frame, mounting notches, dividing strips, tempered glass, fixed guard plates and movable guard plates, not only ensures the light transmittance of the observation window, but also effectively protects the glass from being smoked by the flames for a long time and affecting its light transmittance in the event of a fire, reducing the problem of glass windows bursting due to being exposed to high temperatures for a long time. It has better protective performance, significantly improves the fire resistance of fire doors, and reduces safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 It is a rear view of the structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the installation frame structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the fire door leaf structure of the present invention;

[0028] Figure 5 This is a cross-sectional view of the fire door leaf structure of the present invention;

[0029] Figure 6 for Figure 5 A schematic diagram of the structure at center A;

[0030] Figure 7 This is a schematic structural diagram of the protective observation window of the present invention;

[0031] Figure 8 It is a schematic diagram of the locking structure of the present invention.

[0032] Figure: 1. Installing the frame structure; 101. Installing the door frame; 102. Installing the door opening; 103. Protecting the door frame; 104. Fire-resistant expansion seal; 2. Fire-resistant door leaf structure; 201. External frame; 202. Door panel body; 203. Connecting hinges; 204. Rebound hydraulic cylinder; 205. Alarm; 206. Smoke sensor; 207. Door handle; 208. Lock; 209. Installing the inner cavity; 210. Fire-resistant ceramsite filling layer; 211. Fire-resistant perlite board layer; 212 , rock wool layer; 213, thermal insulation cotton layer; 214, flame retardant sealing layer; 215, fire retardant coating; 3, protective observation window structure; 301, embedded frame; 302, installation notch; 303, dividing strip; 304, tempered glass; 305, fixed guard plate; 306, movable guard plate; 307, pull rod; 308, slide groove; 4, locking structure; 401, hinged seat; 402, rotating plate; 403, movable plate; 404, reinforcing rib; 405, locking screw; 406, turning handle. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0034] See also Figure 1-8 The present invention discloses a steel-wood composite thermal insulation fire door, comprising a mounting frame structure 1, a fire door leaf structure 2 hinged on the inner side of the mounting frame structure 1, a protective observation window structure 3 is provided on the inner side of the fire door leaf structure 2, and a locking structure 4 is provided on the front side of the mounting frame structure 1.

[0035] The installation frame structure 1 includes an installation door cover 101 , an installation door opening 102 is provided inside the installation door cover 101 , a protective door frame 103 is provided inside the installation door opening 102 , and a fireproof expansion seal 104 is provided inside the protective door frame 103 .

[0036] When a fire occurs, the fire door leaf structure 2 is closed, the outside temperature rises, and the fire expansion seal 104 inside the protective door frame 103 expands rapidly to fill the gap between the mounting frame structure 1 and the fire door leaf structure 2 and play a role in smoke isolation.

[0037] The fireproof door leaf structure 2 includes an external frame 201 , an installation cavity 209 is provided on the inner side of the external frame 201 , and a door panel body 202 is provided inside the installation cavity 209 .

[0038] The door panel body 202 includes a fireproof filled ceramsite layer 210, a fireproof perlite board layer 211, a rock wool layer 212, a heat insulating cotton layer 213 and a flame retardant sealing layer 214. The fireproof filled ceramsite layer 210, the fireproof perlite board layer 211, the rock wool layer 212, the heat insulating cotton layer 213 and the flame retardant sealing layer 214 are arranged in sequence from back to front.

[0039] The protective observation window structure 3 includes an embedded frame 301, which is connected to the inner side of the door panel body 202. A mounting recess 302 is provided inside the embedded frame 301. The inner cavity of the mounting recess 302 is divided into a mounting groove and a movable groove by a dividing strip 303. The inner side of the mounting groove is movably connected with a tempered glass 304, and the inner side of the movable groove is fixedly installed with a fixed guard plate 305 and a movable guard plate 306 that is slidably connected.

[0040] Specifically, a connecting hinge 203 and a rebound hydraulic cylinder 204 are provided on the outer side of the external frame 201 , and the external frame 201 is hinged to the installation door hole 102 of the installation door frame 101 through the connecting hinge 203 and the rebound hydraulic cylinder 204 .

[0041] In this embodiment, the external frame 201 is hingedly connected to the door opening 102 of the door frame 101 via hinges 203, ensuring smooth opening and closing of the fire door structure 2. Furthermore, the rebound hydraulic cylinder 204 not only provides assistance when closing the fire door structure 2, mitigating the impact of closing, but also automatically closes the fire door structure 2 in the event of a fire, effectively preventing the spread of fire and smoke through its rebound function.

[0042] Specifically, an alarm 205 , a smoke sensor 206 and a door handle 207 are fixedly installed on the outer side of the door panel body 202 , and a lock 208 is provided on the inner side of the door panel body 202 .

[0043] In this embodiment, when the smoke sensor 206 detects thick smoke, it transmits a signal to the alarm 205, so that the alarm 205 automatically sounds an alarm when a fire occurs, reminding people to evacuate in time.

[0044] At the same time, the provision of lock 208 ensures that the fire door leaf structure 2 cannot be opened without authorization, further enhancing the safety performance of the fire door. The entire steel-wood composite insulated fire door structure is rationally designed, not only providing excellent thermal insulation and fire protection, but also equipped with intelligent alarm functions, which can quickly respond to fires and buy people valuable escape time.

[0045] Specifically, the rock wool layer 212 is made of basalt material and has a thickness of 3 cm to 5 cm. The heat insulating wool layer 213 is made of ceramic fiber material and has a thickness of 0.5 cm to 1 cm.

[0046] In this embodiment, the rock wool layer 212 is made of high-quality basalt and dolomite as the main raw materials. After being melted at a high temperature of more than 1450°C, it is centrifuged into fibers at high speed using a four-axis centrifuge. A certain amount of binder, dust-proof oil, and water-repellent agent are sprayed on it. After being collected by a cotton collector, the fibers are processed through a pendulum method and three-dimensional cotton laying, and then cured and cut to form a rock wool product with good fireproof and heat insulation properties, low water absorption, and chemical stability.

[0047] The thermal insulation cotton layer 213 is made of ceramic fiber material, which has excellent high temperature resistance, low thermal conductivity, good thermal shock resistance, low heat capacity and good thermal erosion resistance. It can effectively isolate heat transfer and further improve the thermal insulation performance of the fire door.

[0048] Specifically, the flame retardant sealing layer 214 is made of graphite material and has a thickness of 1 cm-3 cm. A fire retardant coating 215 is provided on the side of the flame retardant sealing layer 214 away from the heat insulating cotton layer 213 .

[0049] In this embodiment, the graphite material is not only highly heat-resistant (with a temperature range of 200-300°C and -40-60°C), but also highly flexible, with a tensile strength of 309 kPa and an elongation of 5.08%. Graphite maintains structural stability in high-temperature environments, effectively preventing the spread of fire. Furthermore, graphite offers excellent sealing properties, ensuring a tight seal around the fire door when closed, effectively isolating smoke and creating safer conditions for escape.

[0050] Fire retardant coating 215 can improve its fire resistance; it can play a good heat insulation and flame retardant role when a fire occurs, effectively delaying the spread of fire and protecting personal and property safety.

[0051] Specifically, a sliding groove 308 is provided on the surface of the embedded frame 301 , and a pull rod 307 is installed on the surface of the movable guard plate 306 . The pull rod 307 extends to the outside of the embedded frame 301 through the sliding groove 308 .

[0052] In this embodiment, when it is necessary to observe the fire, the firefighters can pull the pull rod 307 to drive the movable guard plate 306 to slide in the slide groove 308, thereby exposing the tempered glass 304 for easy observation of the fire.

[0053] Specifically, the locking structure 4 includes two sets of hinged seats 401, the two hinged seats 401 are fixedly installed with the outer side of the mounting frame structure 1, the inner sides of the two sets of hinged seats 401 are rotatably connected with a rotating plate 402 and a movable plate 403, a reinforcing rib 404 is fixedly installed between the two rotating plates 402, the inner side of the movable plate 403 is rotatably connected with a locking screw 405 through a turning handle 406, the end of the rotating plate 402 away from the hinged seat 401 is provided with a locking hole, and the end of the locking screw 405 away from the turning handle 406 extends to the inner side of the locking hole

[0054] In this embodiment, the design of the locking structure 4 ensures that the fire door remains more secure when closed. By turning the handle 406, the locking screw 405 is driven within the locking hole, locking the rotating plate 402 and the movable plate 403. This ensures that the fire door cannot be easily opened due to high temperatures or external forces in the event of a fire. The provision of reinforcing ribs 404 further strengthens the connection between the rotating plates 402, enhancing the overall stability of the locking structure 4.

[0055] When in use, the smoke sensor 206 can be used to monitor the smoke generated by the fire in real time. When the smoke concentration reaches a preset threshold, the smoke sensor 206 will immediately trigger the alarm 205 to emit a loud alarm, promptly reminding people in the building to pay attention to the fire and evacuate as soon as possible.

[0056] At the same time, the fireproof expansion seal 104 inside the protective door frame 103 expands rapidly and fills the gap between the installation frame structure 1 and the fireproof door leaf structure 2 and acts as a smoke barrier, effectively isolating the spread of fire and smoke and creating a safer evacuation route for escaping personnel.

[0057] In addition, the lock 208 on the inner side of the door panel body 202 can also ensure that the fire door cannot be opened at will without authorization, further enhancing the safety performance of the fire door.

[0058] By rotating the rotating plate 402 and the movable plate 403, the rotating plate 402 is inserted into the inner side of the movable plate 403, and the turning handle 406 is rotated, the locking screw 405 can be driven to move in the locking hole, thereby locking the rotating plate 402 and the movable plate 403, thereby ensuring that the fire door will not be easily opened by high temperature or external force when a fire occurs, thereby ensuring that the fire door will not be opened, thereby achieving isolation of fire and smoke.

[0059] In summary, the steel-wood composite insulated fireproof door, by providing a fireproof door leaf structure 2, and the combined design of the fireproof filling ceramsite layer 210, the fireproof perlite board layer 211, the rock wool layer 212, the heat-insulating cotton layer 213 and the flame-retardant sealing layer 214 in the fireproof door leaf structure 2, not only enhances the strength and stability of the door body, but also significantly improves the heat-insulating effect. Among them, the fireproof filling ceramsite layer 210 and the fireproof perlite board layer 211 as the inner layer materials have excellent fire resistance and heat-insulating properties, and can effectively block the invasion of high-temperature flames and heat. The rock wool layer 212 and the heat-insulating cotton layer 213 as the middle layer materials further enhance the heat-insulating effect of the door body and reduce heat transfer. The flame-retardant sealing layer 214 as the outer layer material not only has flame-retardant properties, but can also effectively prevent the spread of fire and the diffusion of smoke.

[0060] By setting up a protective observation window structure 3 and utilizing a combination of an embedded frame 301, an installation recess 302, a dividing strip 303, tempered glass 304, a fixed guard plate 305 and a movable guard plate 306, the light transmittance of the observation window is ensured, and in the event of a fire, the glass can be effectively protected from being smoked by the flames for a long time and thus affecting its light transmittance, thereby reducing the problem of glass windows bursting due to being in a high temperature state for a long time, having better protective performance, significantly improving the fire resistance of the fire door, and reducing safety hazards.

[0061] It should be noted that the specific models and specifications of the rebound hydraulic cylinder 204, alarm 205, and smoke sensor 206 in the steel-wood composite insulated fire door need to be selected and determined based on the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0062] Furthermore, the power supply and principles of the rebound hydraulic cylinder 204, the alarm 205, and the smoke sensor 206 in the steel-wood composite thermal insulation fire door are clear to those skilled in the art and will not be described in detail here.

[0063] In addition, the working principles and wiring methods of the rebound hydraulic cylinder 204, alarm 205, and smoke sensor 206 in the steel-wood composite insulated fire door are commonplace, and are all conventional means or common knowledge, so they will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0064] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A steel-wood composite heat-insulating fireproof door, comprising a mounting frame structure (1), characterized in that: A fireproof door leaf structure (2) is hingedly connected to the inner side of the installation frame structure (1), a protective observation window structure (3) is provided on the inner side of the fireproof door leaf structure (2), and a locking structure (4) is provided on the front side of the installation frame structure (1); The fireproof door leaf structure (2) comprises an external frame (201), an installation cavity (209) is provided on the inner side of the external frame (201), and a door panel body (202) is provided inside the installation cavity (209); The door panel body (202) comprises a fireproof filling ceramsite layer (210), a fireproof perlite board layer (211), a rock wool layer (212), a heat-insulating cotton layer (213) and a flame-retardant sealing layer (214), wherein the fireproof filling ceramsite layer (210), the fireproof perlite board layer (211), the rock wool layer (212), the heat-insulating cotton layer (213) and the flame-retardant sealing layer (214) are arranged in sequence from back to front; The protective observation window structure (3) comprises an embedded frame (301), the embedded frame (301) being connected to the inner side of the door panel body (202), a mounting recess (302) being provided inside the embedded frame (301), and an inner cavity of the mounting recess (302) being divided into a mounting groove and a movable groove by a partition bar (303); The inner side of the installation groove is movably connected with the tempered glass (304), and the inner side of the movable groove is fixedly installed with a fixed guard plate (305) and slidably connected with a movable guard plate (306).

2. The steel-wood composite thermal insulation fire door according to claim 1, characterized in that: The installation frame structure (1) comprises an installation door cover (101), an installation door opening (102) is provided inside the installation door cover (101), a protective door frame (103) is provided inside the installation door opening (102), and a fireproof expansion seal (104) is provided on the inner side of the protective door frame (103).

3. The steel-wood composite heat-insulating fireproof door according to claim 2, characterized in that: The outer side of the external frame (201) is provided with a connecting hinge (203) and a rebound hydraulic cylinder (204), and the external frame (201) is hinged to the installation door hole (102) of the installation door cover (101) through the connecting hinge (203) and the rebound hydraulic cylinder (204).

4. The steel-wood composite heat-insulating fireproof door according to claim 1, characterized in that: An alarm (205), a smoke sensor (206) and a door handle (207) are fixedly mounted on the outer side of the door panel body (202), and a lock (208) is provided on the inner side of the door panel body (202).

5. The steel-wood composite heat-insulating fireproof door according to claim 1, characterized in that: The rock wool layer (212) is made of basalt material and has a thickness of 3cm-5cm. The heat insulating wool layer (213) is made of ceramic fiber material and has a thickness of 0.5cm-1cm.

6. The steel-wood composite heat-insulating fireproof door according to claim 1, characterized in that: The flame retardant sealing layer (214) is made of graphite material and has a thickness of 1 cm to 3 cm. A fire retardant coating (215) is provided on the side of the flame retardant sealing layer (214) away from the heat insulation cotton layer (213).

7. The steel-wood composite heat-insulating fireproof door according to claim 1, characterized in that: A sliding groove (308) is provided on the surface of the embedded frame (301), and a pull rod (307) is installed on the surface of the movable guard plate (306). The pull rod (307) extends to the outside of the embedded frame (301) through the sliding groove (308).

8. The steel-wood composite heat-insulating fireproof door according to claim 1, characterized in that: The locking structure (4) comprises two sets of hinged seats (401), the two hinged seats (401) are respectively fixedly mounted on the outer sides of the mounting frame structure (1), and the inner sides of the two sets of hinged seats (401) are rotatably connected to a rotating plate (402) and a movable plate (403).

9. The steel-wood composite heat-insulating fireproof door according to claim 8, characterized in that: A reinforcing rib (404) is fixedly installed between the two rotating plates (402), and a locking screw (405) is rotatably connected to the inner side of the movable plate (403) through a turning handle (406).

10. The steel-wood composite heat-insulating fireproof door according to claim 9, characterized in that: A locking hole is provided at one end of the rotating plate (402) away from the hinge seat (401), and an end of the locking screw (405) away from the turning handle (406) extends to the inner side of the locking hole.

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