A high sealing sliding fire door

Abstract

The utility model discloses a high sealing push -and -pull type fire door, including outer wall, drive component, fire door subassembly, emergency door subassembly and smoke alarm, under no fire scene, when personnel are close to fire door, the human body sensor inside smoke alarm detects personnel in and out, and the electric signal conduction drive motor makes the fire door open, and after five seconds when the human body sensor does not detect personnel, the drive motor drives the fire door to close, when just appearing the fire, the smoke alarm detects the smoke, and the electric signal conduction makes the loudspeaker send the fire warning, when the fire is bigger, and the power supply is cut off, the fire escape personnel pulls open the heat insulation cover plate, and unscrews the mechanical door lock, and the emergency door opens, so that the fire escape personnel realizes the escape, the emergency door subassembly in the utility model discloses adopts the simple mechanical structure of hinge articulates, and the fire escape personnel can realize the escape from the scene only with small physical consumption and less operation process, improves the personnel escape efficiency when there is no power supply under the fire condition.

Description

Technical Field

[0001] This utility model relates to the field of fire door technology, and in particular to a high-sealing sliding fire door. Background Technology

[0002] Existing sliding fire doors can generally be divided into two types based on their driving method: the first type is the manual sliding fire door, where the user directly pushes and pulls the fire door to open and close it; the second type is the electric sliding fire door, which has a screw slide rail assembly installed on the upper and lower surfaces of the fire door, and the slider on the screw slide rail assembly is fixedly connected to the fire door. The motor at the end of the screw drives the screw to rotate, thereby moving the slider and achieving the purpose of opening and closing the fire door.

[0003] For example, Chinese invention patent CN118481459A discloses "a high-sealing push-pull fire door", which includes a wall, a U-shaped door frame and a top frame box fixedly installed in the gap of the wall, the top of the U-shaped door frame and the bottom of the top frame box fixedly connected, two fireproof plates symmetrically fixedly installed in the U-shaped door frame, and a fire door slidably installed in the hollow cavity on one side of the fireproof plate. In this invention, the automatic opening and closing of the fire door is realized through the cooperation of human body sensor and PLC controller. Utility model patent CN221032275U discloses "a sliding fire door", including a drive structure and a secondary door structure. The drive structure includes a door frame, a left door component, and a right door component. The left door component is slidably connected inside the door frame, and the right door component is slidably connected inside the door frame. The secondary door structure includes a secondary door component and a rotating component. The secondary door component is fixed to one side of the left door component. The rotating component includes a hidden frame, which is slidably connected inside the left door component. A sliding strip is fixed to one side of the hidden frame, and a rotating rod is rotatably connected inside the hidden frame. A rotating handle is rotatably connected to one side of the rotating rod. This utility model uses the rotating component to rotate the gear, thereby allowing the first and second insertion rods to be pulled out from the left sliding door, thus opening the door. Therefore, even in the event of a power outage, this fire door can still be opened, enabling timely fire extinguishing.

[0004] The two types of sliding fire doors mentioned above have drawbacks. Although the former achieves high sealing performance with its U-shaped door frame, it does not have a mechanically operated emergency door. In the high-temperature environment of a fire, the motor may fail to open or close due to the high temperature, or the building's power supply system may fail to provide power due to the high temperature. This would prevent people escaping the fire from opening or closing the fire door mechanically, affecting escape efficiency. The latter, although it provides a mechanically operated emergency door, requires a handle to rotate a lever out of a hidden frame, then the handle to pull the hidden frame out of the left sliding door, and then the handle to rotate the hidden frame, which causes the slide bar to drive the gear to rotate, allowing the first and second insert rods to be pulled out of the left sliding door, thus opening the swing door. This method is cumbersome and requires waiting for the gear transmission to unlock the mechanical self-locking, which also affects escape efficiency. Utility Model Content

[0005] In order to overcome the problem that existing sliding fire doors do not have emergency doors, or that the opening and closing steps of emergency doors are too cumbersome, thus affecting the escape efficiency of people escaping during a fire.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a high-sealing sliding fire door, which is matched and installed with the outer wall, including a drive assembly, a fire door assembly, an emergency door assembly and a smoke alarm. A U-shaped groove is opened inside the outer wall, and the drive assembly, the fire door assembly, the emergency door assembly and the smoke alarm are all located in the U-shaped groove. The drive assembly is located directly above the fire door assembly at a horizontal level. The emergency door assembly is embedded in the fire door assembly, and the smoke alarm is located on both sides of the drive assembly.

[0007] The aforementioned high-sealing sliding fire door includes an outer wall comprising a wall body and a buffer pad. The buffer pad is vertically installed on both sides of a U-shaped groove in the wall body and is made of fluororubber.

[0008] The aforementioned high-sealing sliding fire door includes a drive assembly comprising two linearly placed guide grooves, with a lead screw connecting the two ends of the guide grooves. A slider is movably connected to the lead screw, and the two are connected by a threaded engagement. The slider is fixedly connected to the fire door assembly. One end of the two lead screws facing each other is engraved with gear teeth, which form a first straight tooth umbrella. A drive motor is located directly above the horizontal level of the guide grooves. The output shaft end of the drive motor is engraved with gear teeth, which form a second straight tooth umbrella. The first straight tooth umbrella meshes with the second straight tooth umbrella. The drive motor is fixed to the lower surface of the top frame, and the top frame covers the outer surface of the drive assembly and is fixedly connected to the outer wall.

[0009] The aforementioned high-sealing sliding fire door assembly includes two symmetrically arranged fire doors, with several buffer dampers fixedly installed on the two sides of the two fire doors that are far apart from each other; and several support wheels are arranged on the lower surface of the fire door along the U-shaped groove direction.

[0010] The aforementioned high-sealing sliding fire door includes an emergency door assembly that is embedded in the fire door and has hinges fixed to the fire door with pins. The emergency door has heat-insulating covers on both sides, each with a handle that retracts into the cover and grooves at the top and bottom. A mechanical lock is installed inside the heat-insulating cover.

[0011] The aforementioned high-sealing sliding fire door has a smoke detector located on the front and rear surfaces of the top frame, and includes a human body sensor, a smoke sensor, and a horn.

[0012] The aforementioned high-sealing sliding fire door has a heat-insulating layer on the outer surface of the top frame covering the entire drive assembly, and is completely sealed at both ends away from the drive motor.

[0013] The aforementioned high-sealing sliding fire door has stepped sealing grooves at the joint edges of the two fire doors.

[0014] The aforementioned high-sealing sliding fire door has its outer surface coated with a heat-insulating coating, including the fire door, emergency door, hinges, heat-insulating cover plate, and handle. The interior of the fire door and emergency door is filled with fire-resistant material.

[0015] In the aforementioned high-sealing sliding fire door, when the heat-insulating cover is normally closed, a permanent magnet is provided on the contact surface between the emergency door and the cover. The magnetic force of the permanent magnet is only 5N to separate the door.

[0016] The beneficial effects of this utility model are: the emergency door component in the high-sealing push-pull fire door of this utility model adopts a simple mechanical structure with hinges, so that people escaping the fire only need to exert less physical effort and have fewer operating procedures to escape the scene, thus improving the efficiency of people escaping when there is no power supply in the event of a fire. A stepped sealing groove is provided at the joint edge of the two fire doors to further improve the sealing performance of the fire doors; Fire doors, emergency doors, hinges, heat-insulating covers, and handles are all coated with a heat-insulating coating. The interiors of fire doors and emergency doors are filled with fire-resistant materials to prevent people from being burned when they come into contact with them while escaping in the event of a fire. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of this utility model; Figure 2 This is a structural diagram of the exterior wall; Figure 3 This is a cross-sectional schematic diagram of the drive component; Figure 4 This is a structural schematic diagram of a fire door assembly; Figure 5 This is a structural diagram of an emergency door assembly.

[0018] Explanation of reference numerals in the attached figures: 1. Exterior wall; 101. Wall structure; 102. Buffer pad; 2. Drive assembly; 201. Guide groove; 202. Lead screw; 203. Slider; 204. First straight toothed umbrella; 205. Drive motor; 206. Second straight toothed umbrella; 207. Top frame; 3. Fire door assembly; 301. Fire door; 302. Buffer damper; 303. Support wheel; 4. Emergency door components; 401. Emergency door; 402. Hinges; 403. Insulated cover; 404. Handles; 405. Mechanical door locks; 5. Smoke detector. Detailed Implementation

[0019] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0020] like Figure 1 As shown, a high-sealing sliding fire door is installed to match an exterior wall 1. It includes a drive assembly 2, a fire door assembly 3, an emergency door assembly 4, and a smoke detector 5. The exterior wall 1 has a U-shaped groove inside, and the drive assembly 2, fire door assembly 3, emergency door assembly 4, and smoke detector 5 are all located in the U-shaped groove. The drive assembly 2 is located directly above the fire door assembly 3 at a horizontal level. The emergency door assembly 4 is embedded in the fire door assembly 3, and the smoke detector 5 is located on both sides of the drive assembly 2.

[0021] like Figure 2 As shown, the outer wall 1 includes a wall body 101 and a buffer pad 102. The buffer pad 102 is vertically installed on both sides of the U-shaped groove opened in the wall body 101. The buffer pad 102 is made of fluororubber, which has high temperature stability, can withstand long-term temperature of 250℃, instantaneous temperature of 300-350℃, and can quickly recover its shape after being compressed in a fire. The combustion residue is a non-toxic solid, avoiding secondary ignition. The buffer pad 102 can realize the contact buffer between the fire door assembly 3 and the outer wall 1 when it is opened and closed.

[0022] like Figure 3As shown, the drive assembly 2 includes two linearly placed guide grooves 201. A lead screw 202 passes between the two ends of the guide grooves 201. A slider 203 is movably connected to the lead screw 202, and the two are connected by a threaded engagement. The slider 203 is fixedly connected to the fire door assembly 3. When the lead screw 202 rotates along the shaft, the slider 203 moves along the two ends of the lead screw 202 due to the constraint of the guide grooves 201. Gear teeth are engraved on the opposite ends of the two lead screws 202, which form the first straight tooth umbrella 204, located directly above the horizontal level of the guide grooves 201. The fire door assembly 2 is provided with a drive motor 205. The output shaft of the drive motor 205 is engraved with gear teeth, which form a second straight tooth umbrella 206. The first straight tooth umbrella 204 meshes with the second straight tooth umbrella 206. The drive motor 205 is fixed to the lower surface of the top frame 207, and the top frame 207 covers the outer surface of the drive assembly 2 and is fixedly connected to the outer wall 1. When the drive motor 205 is working, its output shaft rotates, which drives the two lead screws 202 to rotate, thereby driving the slider 203 to move axially, realizing the opening and closing of the fire door assembly 3.

[0023] like Figure 4 As shown, the fire door assembly 3 includes two symmetrically arranged fire doors 301. Several buffer dampers 302 are fixedly installed on the two fire doors 301 on opposite sides. The buffer dampers 302 contact the buffer pads 102 when the two fire doors 301 are opened, and play an auxiliary buffering role. Several support wheels 303 are arranged on the lower surface of the fire door 301 along the U-shaped groove direction. The support wheels 303 prevent the fire door 301 from directly contacting the outer wall 1 and reduce friction loss.

[0024] like Figure 4-5 As shown, the emergency door assembly 4 includes an emergency door 401, which is embedded in the fire door 301. The emergency door 401 is equipped with a hinge 402, and the pin of the hinge 402 is fixed to the fire door 301. The emergency door 401 is hinged to the fire door 301 through the hinge 402. Heat insulation covers 403 are installed on both sides of the emergency door 401. The heat insulation covers 403 are equipped with handles 404 that can be retracted into the covers. The heat insulation covers 403 have grooves on the top and bottom. After unfolding the handles 404, the heat insulation covers 403 can be opened and closed left and right along the grooves. A mechanical door lock 405 is installed inside the heat insulation covers 403. By turning the mechanical door lock 405, the emergency door 401 can be unfolded along the unfolding direction of the hinge 402, realizing the mechanical opening and closing of the emergency door 401.

[0025] The smoke detector 5 is placed on the front and rear surfaces of the top frame 207 and has a built-in human body sensor, smoke sensor and horn. In the absence of a fire, when the human body sensor detects that someone is entering or leaving, it automatically controls the drive motor 205 to work to control the opening and closing of the fire door 301. In the event of a fire, when the smoke sensor detects smoke, it controls the horn to play an alarm to notify people in the corridor to evacuate quickly.

[0026] The mating edges of the two fire doors 301 are provided with stepped sealing grooves to further improve the sealing performance of the fire doors 301.

[0027] The outer surfaces of fire door 301, emergency door 401, hinge 402, heat insulation cover 403 and handle 404 are all coated with heat insulation coating. The interior of fire door 301 and emergency door 401 is filled with fireproof material to prevent people from being burned when they come into contact with them while escaping in case of fire.

[0028] The outer surface of the top frame 207 is provided with a heat insulation layer to cover the entire drive assembly 2, and is completely sealed at both ends away from the drive motor 205, reducing the risk that the drive motor 205 will not work due to high temperature environment.

[0029] When the heat insulation cover 403 is normally closed, the emergency door 401 is provided with a permanent magnet on its contact surface. The magnetic force of the permanent magnet is only 5N to separate it. The permanent magnet prevents the heat insulation cover 403 from opening and closing directly due to the inertia of the fire door 301 in the absence of a fire. In the event of a fire, the personnel escaping the fire do not need to expend too much physical strength to open the heat insulation cover 403.

[0030] The working principle of this utility model is as follows: S1: In the absence of a fire, when a person approaches the fire door 301, the human body sensor inside the smoke detector 5 detects the person entering or exiting. The electrical signal is transmitted to make the drive motor 205 work, the output shaft rotates, and drives the two lead screws 202 to rotate in opposite directions, causing the slider 203 to move in the opposite direction, thereby opening the fire door 301. Five seconds after the human body sensor no longer detects a person, the drive motor 205 drives the fire door 301 to close. S2: When a fire first breaks out, the smoke detector 5 detects smoke, and the electrical signal is transmitted to activate the horn, which issues a warning to remind people in the corridor to evacuate quickly. S3: When the fire is large and the power supply is cut off, the fire escape personnel unfold the handle 404, pull open the heat insulation cover 403, unscrew the mechanical door lock 405, and the emergency door 401 rotates open in the unfolding direction of the hinge 402, allowing the fire escape personnel to escape through the emergency door 401.

[0031] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A high-sealing sliding fire door, installed to match an exterior wall (1), comprising a drive assembly (2), a fire door assembly (3), an emergency door assembly (4), and a smoke detector (5), characterized in that, The exterior wall (1) has a U-shaped groove inside. The drive assembly (2), fire door assembly (3), emergency door assembly (4) and smoke alarm (5) are all located in the U-shaped groove. The drive assembly (2) is located directly above the fire door assembly (3) at a horizontal level. The emergency door assembly (4) is embedded in the fire door assembly (3). The smoke alarm (5) is located on both sides of the drive assembly (2).

2. A high-sealing sliding fire door as described in claim 1, characterized in that, The outer wall (1) includes a wall (101) and a buffer pad (102). The buffer pad (102) is vertically installed on both sides of the U-shaped groove opened in the wall (101). The buffer pad (102) is made of fluororubber.

3. A high-sealing sliding fire door as described in claim 1, characterized in that, The drive assembly (2) includes two linearly placed guide grooves (201), with a lead screw (202) connecting the two ends of the guide grooves (201), and a slider (203) movably connected to the lead screw (202), and the slider (203) is fixedly connected to the fire door assembly (3); Two lead screws (202) have teeth engraved at their opposite ends, forming a first straight tooth umbrella (204). A drive motor (205) is located directly above the guide groove (201) at a horizontal position. The output shaft of the drive motor (205) has teeth engraved at its end, forming a second straight tooth umbrella (206). The first straight tooth umbrella (204) meshes with the second straight tooth umbrella (206). The drive motor (205) is fixed to the lower surface of the top frame (207), and the top frame (207) covers the outer surface of the drive assembly (2) and is fixedly connected to the outer wall (1).

4. A high-sealing sliding fire door as described in claim 1, characterized in that, The fire door assembly (3) includes two symmetrically arranged fire doors (301), and buffer dampers (302) are fixedly installed on the two fire doors (301) on opposite sides; at least two support wheels (303) are arranged on the lower surface of the fire door (301) along the U-shaped groove direction.

5. A high-sealing sliding fire door as described in claim 4, characterized in that, The emergency door assembly (4) includes an emergency door (401), which is embedded in a fire door (301) and is equipped with a hinge (402). The hinge (402) is fixed to the fire door (301) by a pin. The emergency door (401) has heat insulation covers (403) on both sides. The heat insulation covers (403) are equipped with handles (404) that can be retracted into the cover and have grooves on the top and bottom. The heat insulation covers (403) are equipped with mechanical door locks (405).

6. A high-sealing sliding fire door as described in claim 1, characterized in that, The smoke detector (5) is placed on the front and back surfaces of the top frame (207) and has a built-in human body sensor, smoke sensor and horn.

7. A high-sealing sliding fire door as described in claim 3, characterized in that, The outer surface of the top frame (207) is provided with a heat insulation layer that covers the drive assembly (2) and is sealed at both ends away from the drive motor (205).

8. A high-sealing sliding fire door as described in claim 4, characterized in that, A stepped sealing groove is provided at the mating edge of the two fire doors (301).

9. A high-sealing sliding fire door as described in claim 5, characterized in that, The outer surfaces of the fire door (301), emergency door (401), hinge (402), heat insulation cover (403) and handle (404) are all coated with heat insulation coating, and the interior of the fire door (301) and emergency door (401) is filled with fireproof material.

10. A high-sealing sliding fire door as described in claim 5, characterized in that, When the heat insulation cover (403) is normally closed, a permanent magnet is provided on the contact surface between the emergency door (401) and the cover.

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