Smoke-isolating fireproof door

Abstract

The utility model relates to the technical field of fireproof doors, in particular to a smoke isolation fireproof door which comprises a fireproof door frame, a fireproof door plate and a sealing assembly, a mounting groove is formed in the inner wall of the fireproof door frame, the fireproof door frame is rotationally connected with the fireproof door plate, and a containing groove is formed in the fireproof door plate; the sealing assembly is connected to a door plate of the fireproof door and comprises a plurality of isolation assemblies and protection assemblies, each isolation assembly comprises a telescopic device and an expansion sealing strip, and each protection assembly comprises a sealing plate, an inclined plate and a first elastic part. According to the fireproof door, smoke generated by a fire can trigger the smoke alarm, the smoke alarm can directly cut off power supply, and after power failure, the isolation assembly can push the expansion sealing strip to be close to the fireproof door frame to form a frame body used for blocking a gap between the fireproof door plate and the fireproof door frame. Harmful gas generated by fire disasters is prevented from spreading through the frame body.

Description

Technical Field

[0001] This utility model relates to the field of fire door technology, specifically to a smoke-proof fire door. Background Technology

[0002] Fire doors are doors that can meet the requirements of fire resistance stability, integrity, and heat insulation within 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., and are specifically used in building construction to isolate fire sources.

[0003] Chinese Patent No. CN221144166U discloses a fire door with smoke-proof function. Key features include: a door frame with a sealing groove; a fire door body mounted on the door frame, equipped with a door closer and a door handle; a sealing frame mounted on the fire door body, sealed to the sealing groove, and with an expansion sealing strip on its surface; and a smoke alarm mounted on the fire door body. Compared to existing technologies, this invention achieves the effect of preventing smoke leakage during a fire through the sealed connection between the sealing frame and the sealing groove, and the addition of an expansion sealing strip on the sealing frame. The smoke alarm features automatic alarm, high-pitched warning, and flashing alert functions.

[0004] However, the above technical solution only uses an expansion sealing strip on the sealing frame to block the gaps in the fire door and isolate smoke by the expansion of the sealing strip when heated. However, in some cases where the fire source is far from the fire door and the smoke flows into the gaps in the fire door, the temperature of the smoke is lower than the temperature of the flame. This may result in the expansion sealing strip not being able to be heated and expand to seal the gaps in the fire door. Utility Model Content

[0005] The purpose of this utility model is to address the problems existing in the background technology by proposing a smoke-proof and fireproof door.

[0006] The technical solution of this utility model is as follows: A smoke-proof and fireproof door includes a fireproof door frame with an installation groove on its inner wall. A fireproof door panel is rotatably connected to the fireproof door frame, and a receiving groove is provided on the fireproof door panel. A sealing assembly is connected to the fireproof door panel and includes multiple isolation components and a protective component. The isolation components include a telescopic device and an expansion sealing strip. The telescopic device is connected to the receiving cavity in the fireproof door panel, and the expansion sealing strip is disposed at the telescopic end of the telescopic device. The protective component includes a sealing plate, an inclined plate, and a first elastic element. Two sealing plates are symmetrically arranged and disposed in the receiving groove. An inclined plate is connected to the sealing plate. The number of elastic elements corresponding to the number of inclined plates is connected at both ends to the receiving groove and the inclined plate. In the use state of the sealing assembly, the moving ends of the multiple telescopic devices move upward, driving the expansion sealing strip to form a sealed frame. The first elastic element pushes the inclined plate to make the sealing plate rotate parallel to the expansion sealing strip.

[0007] Preferably, the isolation assembly further includes a movable plate, the number of which corresponds to the telescopic device, the movable plate being parallel to the fire door panel, the movable plate being connected to the telescopic end of the telescopic device, and one side of the movable plate being connected to the expansion sealing strip; a second elastic member, of which multiple are distributed, the two ends of which are respectively connected to the movable plate and the receiving groove; and a smoke alarm, which is connected to the fire door panel and electrically connected to the telescopic device.

[0008] Preferably, the expansion sealing strips are staggered, and any two symmetrically arranged expansion sealing strips have mating grooves at both ends, while the other two symmetrically arranged expansion sealing strips have mating blocks at both ends that are slidably connected to the mating grooves.

[0009] Preferably, the protective assembly also includes a rotating shaft, two of which are symmetrically arranged, with fixed seats rotatably connected to both ends of the rotating shaft. The fixed seats are connected to the receiving grooves opened on the fire door panel, and the rotating shaft is connected to the sealing plate; and an extrusion block is connected to the end of the moving plate away from the expansion sealing strip, and the extrusion block is slidably connected to the inclined plate.

[0010] Preferably, a mating frame arranged in a U-shape is connected inside the mounting groove, and multiple parallel protrusions are connected to the mating frame, with the protrusions slidably connected to the expansion sealing strip.

[0011] Preferably, the fire door panel has an observation window, and the observation window is fitted with fireproof glass.

[0012] Preferably, the fire door panel has a fire-retardant coating on both the inner and outer sides.

[0013] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0014] In this invention, the smoke generated by a fire will trigger the smoke alarm, which can directly cut off the power supply. After the power is cut off, the isolation component will push the expansion sealing strip close to the fire door frame to form a frame for blocking the gap between the fire door panel and the fire door frame. The frame prevents the spread of harmful gases generated by the fire. In the initial state, the protective component can seal the isolation component to reduce the contact between the expansion sealing strip and the outside world to prevent it from affecting its performance. In the use state, it can also provide a certain degree of protection for the expansion sealing strip to prevent it from being directly burned by flames, which would cause it to decompose and carbonize rapidly. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present utility model;

[0016] Figure 2 for Figure 1 A cross-sectional view;

[0017] Figure 3 for Figure 2 Enlarged view of the structure at point A;

[0018] Figure 4 This is a schematic diagram illustrating the usage status of a closed component.

[0019] Figure 5 This is a schematic diagram of the initial state of the closed component.

[0020] Reference numerals: 1. Fire door frame; 2. Fire door panel; 3. Telescopic device; 4. Expansion sealing strip; 5. Sealing plate; 6. Inclined plate; 7. First elastic element; 8. Moving plate; 9. Second elastic element; 10. Smoke detector; 11. Mating groove; 12. Mating block; 13. Rotating shaft; 14. Fixed seat; 15. Pressing block; 16. Mating frame; 17. Protruding strip; 18. Observation window. Detailed Implementation

[0021] Example 1

[0022] like Figures 1-5 As shown, the present invention proposes a smoke-proof and fireproof door, which includes a fireproof door frame 1, a fireproof door panel 2, and a sealing assembly. An installation groove is provided on the inner wall of the fireproof door frame 1.

[0023] In an optional embodiment, a mating frame 16 arranged in a U-shape is connected in the mounting groove, and a plurality of parallel protrusions 17 are connected on the mating frame 16, the protrusions 17 being slidably connected to the expansion sealing strip 4.

[0024] The fire door frame 1 is rotatably connected to the fire door panel 2, and the fire door panel 2 is provided with a receiving groove;

[0025] In an optional embodiment, an observation window 18 is provided on the fire door panel 2, and fireproof glass is installed on the observation window 18;

[0026] The sealing assembly is connected to the fire door panel 2. The sealing assembly includes multiple isolation components and protective components. The isolation components include telescopic devices 3 and expansion sealing strips 4. The telescopic devices 3 are connected to the receiving cavity opened on the fire door panel 2. The telescopic devices 3 are selected from, but are not limited to, hydraulic cylinders. The hydraulic cylinders do not have self-locking capabilities and can move after power failure. The expansion sealing strips 4 are set at the telescopic end of the telescopic devices 3. The protective components include sealing plates 5, inclined plates 6, and first elastic elements 7. Two sealing plates 5 are symmetrically arranged and are set in the receiving groove. An inclined plate 6 is connected to the sealing plate 5. The number of elastic elements corresponding to the number of inclined plates 6 is connected to the receiving groove and the inclined plate 6 at both ends. When the sealing assembly is in use, the moving ends of the multiple telescopic devices 3 move upward, driving the expansion sealing strips 4 to form a sealed frame. The first elastic element 7 pushes the inclined plate 6 to make the sealing plate 5 rotate parallel to the expansion sealing strips 4.

[0027] Example 2

[0028] like Figures 2-5 As shown, this utility model proposes a smoke-proof and fireproof door. Compared with Embodiment 1, this embodiment describes the detailed structure of the isolation component and the protection component. The isolation component also includes a movable plate 8, a second elastic element 9, and a smoke alarm 10. The number of movable plates 8 corresponds to the telescopic device 3. The movable plates 8 are parallel to the fireproof door panel 2 and are connected to the telescopic end of the telescopic device 3. One side of the movable plate 8 is connected to the expansion sealing strip 4. Multiple second elastic elements 9 are distributed, and the two ends of the second elastic elements 9 are respectively connected to the movable plate 8 and the receiving groove. The second elastic element 9 is selected from, but is not limited to, spring sheets. The smoke alarm 10 is connected to the fireproof door panel 2 and is electrically connected to the telescopic device 3.

[0029] In an optional embodiment, the expansion sealing strips 4 are staggered with each other, and any two symmetrically arranged expansion sealing strips 4 have mating grooves 11 at both ends, and the other two symmetrically arranged expansion sealing strips 4 have mating blocks 12 that are slidably connected to the mating grooves 11 at both ends.

[0030] The protective assembly also includes a rotating shaft 13, a fixed seat 14, and a pressing block 15. There are two rotating shafts 13 symmetrically arranged. The fixed seats 14 are rotatably connected to both ends of the rotating shaft 13. The fixed seats 14 are connected to the receiving groove opened on the fire door panel 2. The rotating shaft 13 is connected to the sealing plate 5. The pressing block 15 is connected to the end of the moving plate 8 away from the expansion sealing strip 4. The pressing block 15 is slidably connected to the inclined plate 6.

[0031] In an optional embodiment, both the inner and outer sides of the fire door panel 2 are provided with a fire-retardant coating.

[0032] In summary, when this utility model is in use, under normal conditions, the telescopic device 3 operates powered by an external device. Its piston rod is in a retracted state, driving the moving plate 8 and the expansion sealing strip 4 into the receiving groove, and compressing the first elastic element 7 to reduce the contact between the expansion sealing strip 4 and the outside world to prevent wear. At the same time, the movement of the moving plate 8 will drive the pressing block 15 to move synchronously. The pressing block 15 moves down and contacts the inclined plate 6, pushing the inclined plate 6 and the sealing plate 5 to rotate around the rotating shaft 13. The two sealing plates 5 change from a parallel state to an inclined state, blocking the receiving groove and the expansion sealing strip 4, preventing external dust and liquid from contacting the expansion sealing strip 4 and causing its performance to degrade. When in use, the smoke alarm 10 will control the circuit opening and closing by detecting external smoke. After the circuit is cut off, the telescopic end of the telescopic device 3 loses control. The second elastic element 9 rebounds on its own after losing the pressure of the external force. The second elastic element 9 pushes the moving plate 8 to move upward and pulls the telescopic end of the telescopic device 3 to move. The expansion sealing strip 4 on the moving plate 8 moves and contacts the protrusion 17 on the mating frame 16 to increase the contact area and enhance the sealing performance. At the same time, as the squeezing block 15 moves upward, after the inclined plate 6 loses the squeezing of the squeezing block 15, the first elastic element 7 rebounds and pushes the sealing plate 5 to rotate around the rotating shaft 13. The sealing plate 5 changes from an inclined state to a state that is parallel to each other and perpendicular to the ground. When the sealing plate 5 is in its parallel state, it can also prevent the flame from directly contacting the expansion sealing strip 4. After the expansion sealing strip 4 is heated, it expands and fits with the mating frame 16 to prevent smoke from leaking from the gaps in the fire door.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A smoke-proof and fireproof door, characterized in that, include Fire door frame (1) with an installation groove on its inner wall; fire door frame (1) is rotatably connected to fire door panel (2); fire door panel (2) has a receiving groove. The sealing assembly is connected to the fire door panel (2). The sealing assembly includes multiple isolation components and protective components. The isolation components include telescopic devices (3) and expansion sealing strips (4). The telescopic devices (3) are connected to the receiving cavity opened on the fire door panel (2). The expansion sealing strips (4) are set at the telescopic end of the telescopic devices (3). The protective components include sealing plates (5), inclined plates (6) and first elastic elements (7). There are two symmetrically arranged sealing plates (5). The sealing plates (5) are set in the receiving groove. An inclined plate (6) is connected to the sealing plate (5). The two ends of the elastic elements corresponding to the number of inclined plates (6) are connected to the receiving groove and the inclined plate (6). When the sealing assembly is in use, the moving ends of the multiple telescopic devices (3) move upward to drive the expansion sealing strips (4) to form a sealed frame. The first elastic element (7) pushes the inclined plate (6) to make the sealing plate (5) rotate parallel to the expansion sealing strips (4).

2. The smoke-proof and fireproof door according to claim 1, characterized in that, The isolation assembly also includes a movable plate (8), the number of which corresponds to the telescopic device (3). The movable plate (8) is parallel to the fire door panel (2). The movable plate (8) is connected to the telescopic end of the telescopic device (3). One side of the movable plate (8) is connected to the expansion sealing strip (4). The second elastic element (9) is distributed in multiple parts, and the two ends of the second elastic element (9) are respectively connected to the movable plate (8) and the receiving groove; A smoke detector (10) is connected to the fire door panel (2), and the smoke detector (10) is electrically connected to the telescopic device (3).

3. A smoke-proof and fireproof door according to claim 1, characterized in that, The expansion sealing strips (4) are arranged in an alternating manner. Any two symmetrically arranged expansion sealing strips (4) have mating grooves (11) at both ends, and the other two symmetrically arranged expansion sealing strips (4) have mating blocks (12) that are slidably connected to the mating grooves (11) at both ends.

4. A smoke-proof and fireproof door according to claim 1, characterized in that, The protective assembly also includes a rotating shaft (13), which is symmetrically arranged in two. The two ends of the rotating shaft (13) are rotatably connected to a fixed seat (14). The fixed seat (14) is connected to the receiving groove opened on the fire door panel (2). The rotating shaft (13) is connected to the sealing plate (5). The extrusion block (15) is connected to the end of the moving plate (8) away from the expansion sealing strip (4), and the extrusion block (15) is slidably connected to the inclined plate (6).

5. A smoke-proof and fireproof door according to claim 1, characterized in that, The mounting slot is connected to a mating frame (16) arranged in a square shape. Multiple parallel protrusions (17) are connected to the mating frame (16). The protrusions (17) are slidably connected to the expansion sealing strip (4).

6. A smoke-proof and fireproof door according to claim 1, characterized in that, An observation window (18) is provided on the fire door panel (2), and fireproof glass is installed on the observation window (18).

7. A smoke-proof and fireproof door according to claim 1, characterized in that, Fireproof door panel (2) has fireproof coating on both the inner and outer sides.

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