Safety ventilation fire door with adjustable sealing

Abstract

The present invention discloses a safety ventilation fire door with adjustable sealing performance, comprising a first door panel, a supporting body, and a second door panel. Upper vents are correspondingly provided on the upper portions of the first door panel, the second door panel, and the supporting body, and lower vents are correspondingly provided on the lower portions of the first door panel, the second door panel, and the supporting body. A driving assembly is provided within the supporting body, and a first sealing assembly is connected to the driving assembly to respectively seal the upper and lower vents. Therefore, cavities are provided within the supporting body above the upper vent and below the lower vent, and a second sealing assembly is provided within each cavity, connected to the first sealing assembly via a driving assembly. Through slots are provided at the top and bottom of the supporting body for the second sealing assembly to extend through. The present invention has the characteristics of excellent sealing performance and fireproofing and isolation performance in the event of a fire.

Description

Technical Field

[0001] The invention relates to a normally closed fire door, in particular to a safety ventilation fire door with adjustable sealing performance. Background Art

[0002] A fire door is a door that meets the requirements of fire resistance, stability, integrity and thermal insulation within a certain period of time. It is usually installed between fire compartments, evacuation stairwells, vertical shafts and other passages. It has a certain degree of fire resistance and is a fire-resistant partition that prevents the spread of fire and smoke.

[0003] Normally open fire doors and normally closed fire doors are two common types of fire doors in buildings. Normally open fire doors are usually installed in places where passages need to be kept clear, such as emergency exits or areas with heavy traffic. They are kept open at ordinary times. When a fire occurs, the surrounding temperature rises to a certain level, and the thermal element installed on the door will expand, triggering the closing mechanism to automatically close the door, helping to prevent smoke and flames from spreading to other areas and providing people with time to escape.

[0004] Normally closed fire doors are usually installed in areas that require uninterrupted fire isolation, such as power rooms and machine rooms. Normally, the fire doors are kept closed and locked through a locking mechanism using electromagnetic force or hydraulic pressure. When a fire occurs or the corresponding alarm equipment is triggered, the electromagnetic coil or hydraulic system will release the locking mechanism, allowing the fire doors to open, allowing evacuees to escape or firefighters to enter.

[0005] In passages with low foot traffic but requiring ventilation, fire doors with ventilation structures are typically installed. These fire doors typically have open vents to allow air to circulate inside and outside. In the event of a fire, the vents are closed to prevent the spread of fire and smoke. However, these fire doors lack effective internal sealing and isolation mechanisms, leaving gaps between the door and vents, preventing a perfect seal. During a fire, smoke can easily pass through these tiny gaps and spread, reducing the fire door's isolation effectiveness. This makes it difficult to effectively control the fire, lowering the overall fire protection performance and posing a safety hazard. To address this issue, some ventilated fire doors currently use additional sealing strips to block the door gaps. However, these additional sealing strips make opening and closing the fire door more difficult. Furthermore, the strips are exposed to wear and tear over time, leading to wear and tear, which can weaken the sealing strips' ability to block the door gaps in the event of a fire. Summary of the Invention

[0006] The object of the present invention is to provide a safety ventilation fire door with adjustable sealing performance. The present invention has the characteristics of good sealing performance and fire isolation performance in case of fire.

[0007] The technical solution of the present invention: a safety ventilation and fireproof door with adjustable sealing performance comprises a first door panel and a second door panel, a supporting body is provided between the first door panel and the second door panel, upper vents are provided correspondingly on the upper parts of the first door panel, the second door panel and the supporting body, and lower vents are provided correspondingly on the lower parts of the first door panel, the second door panel and the supporting body; a driving assembly is provided inside the supporting body, and a first sealing assembly is connected to the driving assembly to respectively close the upper vent and the lower vent; so a cavity is provided inside the supporting body above the upper vent and below the lower vent, a second sealing assembly connected to the first sealing assembly via a pushing assembly is provided in the cavity, and a through groove for the second sealing assembly to extend is provided at the top and bottom of the supporting body.

[0008] In the aforementioned safety ventilation fire door with adjustable sealing, the first sealing assembly includes an upper seal for closing the upper vent and a lower seal for closing the lower vent. The upper seal and the lower seal each include a pair of sealing plates distributed on the left and right, and the two sealing plates are connected by a connecting rod. The driving assembly is connected to the connecting rod to drive the upper seal and the lower seal to synchronously seal the upper vent and the lower vent or synchronously open the upper vent and the lower vent.

[0009] In the aforementioned safety ventilation fire door with adjustable sealing, a groove is provided on the sealing plate, and a water storage layer and a fire insulation layer are provided in the groove from the inside to the outside, and one end of the fire insulation layer is rotatably connected to the sealing plate through a rotating shaft.

[0010] In the aforementioned safety ventilation fire door with adjustable sealing, the water storage layer includes several layers of annular water storage chambers with different diameters, in which water and dissolved carbon dioxide are stored. Adjacent layers of water storage chambers are connected by several guide grooves, and the guide grooves are filled with fire-proof foam.

[0011] In the aforementioned safety ventilation fire door with adjustable sealing, a clay ceramsite layer is provided on the side of the sealing plate facing the water storage layer, and micropores are provided on the surface of the clay ceramsite layer.

[0012] In the aforementioned safety ventilation fire door with adjustable sealing, the driving assembly includes a driver, which is provided with a driving gear, and the upper sealing member and the lower sealing member are both provided with racks respectively engaged with opposite sides of the driving gear.

[0013] In the aforementioned safety ventilation and fire door with adjustable sealing, the pushing assembly includes a pushing rod, a fixed plate is provided inside the supporting body, one end of the pushing rod is connected to the first sealing assembly on the corresponding side, the other end of the pushing rod passes through the fixed plate and is sleeved with a spring, one end of the spring is connected to the fixed plate, and the other end of the spring is connected to the second sealing assembly.

[0014] In the aforementioned safety ventilation fire door with adjustable sealing, the second sealing component includes a water tank connected to the pushing component, the water tank is filled with cooling water and fire extinguishing gas, a fireproof sealing strip is provided on the side of the water tank away from the fire door, the water tank is provided with a first water outlet connected to the outside world and a second water outlet connected to the fireproof sealing strip, and a sealing membrane is provided on the first water outlet and the second water outlet.

[0015] In the aforementioned safety ventilation fire door with adjustable sealing, the water tank includes an upper water tank located above the upper vent and a lower water tank located below the lower vent. The fire extinguishing gas in the upper water tank is an inert gas lighter than air, and the fire extinguishing gas in the lower water tank is an inert gas heavier than air.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] When the fire door of the present invention is in a normal state, the driving component adjusts the position of the first sealing component, opens the upper vents and the lower vents, realizes air circulation inside and outside the door, and performs daily ventilation; at the same time, the second sealing component is driven by the pushing component to be hidden inside the supporting body, which does not affect the normal opening and closing of the fire door; when a fire occurs, the driving component adjusts the position of the first sealing component to close the upper vents and the lower vents; while the first sealing component moves, the second sealing component is driven by the pushing component to extend outward to block the upper door gap and the lower door gap, thereby achieving rapid sealing and isolating the circulation of smoke and flames. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a structural diagram of the sealing plate;

[0020] Figure 3 It is a structural diagram of the water storage chamber;

[0021] Figure 4 It is a structural diagram of the water tank.

[0022] The marks in the accompanying drawings are: 1. First door panel; 11. Second door panel; 12. Upper vent; 13. Lower vent; 2. Support body; 21. Cavity; 22. Fixed plate; 3. Drive assembly; 31. Driving gear; 32. Rack; 4. First sealing assembly; 41. Sealing plate; 42. Connecting rod; 43. Water storage layer; 44. Fire insulation layer; 45. Water storage cavity; 46. Fireproof foam; 47. Clay aggregate layer; 5. Second sealing assembly; 51. Water tank; 52. Cooling water; 53. Fire extinguishing gas; 54. Fireproof sealing strip; 55. First water outlet; 56. Second water outlet; 6. Push assembly; 61. Push rod; 62. Spring. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the examples, but they are not intended to limit the present invention.

[0024] Example:

[0025] like Figures 1-4 As shown, a safety ventilation and fire door with adjustable sealing performance includes a first door panel 1 and a second door panel 11, a supporting body 2 is provided between the first door panel 1 and the second door panel 11, upper vents 12 are provided correspondingly at the upper parts of the first door panel 1, the second door panel 11 and the supporting body 2, and lower vents 13 are provided correspondingly at the lower parts of the first door panel 1, the second door panel 11 and the supporting body 2; a driving assembly 3 is provided inside the supporting body 2 between the upper vents 12 and the lower vents 13, and a first sealing assembly 4 is connected to the driving assembly 3 to respectively close the upper vents 12 and the lower vents 13; so a cavity 21 is provided inside the supporting body 2 above the upper vent 12 and below the lower vent 13, a second sealing assembly 5 is provided in the cavity 21, one side of the second sealing assembly 5 is connected to the first sealing assembly 4 via a pushing assembly 6, and the top and bottom of the supporting body 2 are provided with a through groove for the other side of the second sealing assembly 5 to extend out.

[0026] When the fire door is in the normal state, the driving component 3 adjusts the position of the first sealing component 4, opens the upper vents 12 and the lower vents 13, realizes air circulation inside and outside the door, and performs daily ventilation; at the same time, the second sealing component 5 is driven by the pushing component 6 to be hidden inside the supporting body 2, without affecting the normal opening and closing of the fire door; when a fire occurs, the driving component 3 adjusts the position of the first sealing component 4 to close the upper vents 12 and the lower vents 13; while the first sealing component 4 moves, it also drives the second sealing component 5 to extend outward through the pushing component 6 to block the upper door gap and the lower door gap, thereby achieving rapid sealing and isolating the flow of smoke and flames.

[0027] The first sealing assembly 4 includes an upper seal for closing the upper vent 12 and a lower seal for closing the lower vent 13. The upper seal and the lower seal each include a pair of sealing plates 41 distributed on the left and right. The two sealing plates 41 are connected by a connecting rod 42. The driving assembly 3 is connected to the connecting rod 42 to drive the upper seal and the lower seal to move away from each other to synchronously seal the upper vent 12 and the lower vent 13 or to move closer to each other to synchronously open the upper vent 12 and the lower vent 13.

[0028] The sealing plate 41 is provided with a groove, within which, from the inside out, are located a water storage layer 43 and a fire insulation layer 44. One end of the fire insulation layer 44 is rotatably connected to the sealing plate 41 via a rotating shaft. When the sealing plate 41 seals the upper vent 12 or the lower vent 13, the groove precisely corresponds to the upper vent 12 or the lower vent 13, and the fire insulation layer 44 is connected to the outside world. In the event of a fire, the fire insulation layer 44 of the upper seal seals at the upper vent 12, and the lower seal seals at the lower vent 13. The water storage layer 43 is cooled by a water spraying process, causing the fire insulation layer 44 of the upper seal to rotate upward via the rotating shaft, while the fire insulation layer 44 of the lower seal rotates downward via the rotating shaft, thereby isolating the flames near the fire door and extinguishing the fire.

[0029] The water storage layer 43 includes several layers of annular water storage chambers 45 of varying diameters. Water and dissolved carbon dioxide are stored in the water storage chambers 45. Adjacent layers of water storage chambers 45 are connected by several diversion channels filled with fire-retardant foam 46. When a fire occurs and the upper and lower vents 12 and 13 are sealed, the sealing plate 41 is exposed to the high-temperature environment. The fire-retardant foam 46 is made of a material that evaporates and releases fire-extinguishing gas when exposed to high temperatures. The fire-retardant foam 46 evaporates upon exposure to heat, and the released fire-extinguishing gas pushes the fire-insulating layer 44 outward, isolating the external fire and extinguishing it with the fire-extinguishing gas. The evaporation of the fire-retardant foam 46 also interconnects the water storage chambers 45, cooling the sealing plate 41. Simultaneously, the water and carbon dioxide in the water storage chambers 45 are further ejected to extinguish the external flames.

[0030] A clay granulate layer 47 is provided on the side of the sealing plate 41 facing the water storage layer 43. The surface of the clay granulate layer 47 is provided with micropores. When the fire barrier layer 44 is turned outward, the clay granulate layer 47 faces the outside world. The micropores of the clay granulate layer 47 are lightweight and strong, and have a strong adsorption effect, thereby absorbing toxic fumes, improving safety and reducing harm to the human body.

[0031] The drive assembly 3 includes a driver equipped with a driving gear 31. Both the upper and lower seals are equipped with racks 32 that mesh with opposite sides of the driving gear 31. The driver can be an electric or manual driver connected to the temperature sensing element. The driver rotates the driving gear 31, which in turn drives the racks 32 on either side in opposite directions. This, through the racks 32, drives the upper and lower seals toward each other, opening the upper and lower vents 12 and 13, or away from each other, closing them. This synchronizes the upper and lower seals, accelerating the opening and sealing processes.

[0032] The push assembly 6 includes a push rod 61. A fixed plate 22 is provided within the support body 2. One end of the push rod 61 is connected to the first sealing assembly 4 on the corresponding side. The other end of the push rod 61 passes through the fixed plate 22 and is fitted with a spring 62. One end of the spring 62 is connected to the fixed plate 22, and the other end of the spring 62 is connected to the second sealing assembly 5. As the first sealing assembly 4 moves, the push rod 61 drives the second sealing assembly 5 to close the upper and lower door gaps, achieving a rapid and comprehensive seal. The spring 62 allows the second sealing assembly 5 to fit tightly against the wall, completely closing the gap and improving sealing performance while also adapting to door gaps of varying widths.

[0033] The second sealing assembly 5 includes a water tank 51 connected to the driving assembly 6. The water tank 51 contains cooling water 52 and fire extinguishing gas 53. A fireproof sealing strip 54 is provided on the side of the water tank 51 away from the fire door. The fireproof sealing strip 54 is filled in a through groove. A first water outlet 55 communicating with the outside and a second water outlet 56 communicating with the fireproof sealing strip 54 are provided on the side of the water tank 51. The first water outlet 55 and the second water outlet 56 are both provided with a sealing membrane. When a fire occurs, the second sealing assembly 5, driven by the driving assembly 3, extends the water tank 51 and the fireproof sealing strip 54 from the through grooves at the top and bottom of the support body 2 to the outside. The fireproof sealing strip 54 expands due to heat, blocking the upper and lower door gaps, preventing flames and harmful smoke from flowing through the door gaps. At the same time, the cooling water 52 and fire extinguishing gas 53 in the water tank 51 break through the sealing membrane when heated and spray out from the first water outlet 55 and the second water outlet 56. The cooling water 52 and fire extinguishing gas 53 sprayed out through the first water outlet 55 isolate, cool down and extinguish the flame and harmful smoke on the upper part of the fire door; the cooling water 52 and fire extinguishing gas 53 sprayed out through the second water outlet 56 are sprayed onto the fireproof sealing strip 54. The cooling water 52 has the effect of cooling and insulating, reducing the damage of the high-temperature flame to the fireproof sealing strip 54; the gas impact force of the fire-extinguishing gas 53 makes the fireproof sealing strip 54 fit more closely to the door gap, thereby improving the barrier effect.

[0034] The water tank 51 comprises an upper water tank located above the upper vent 12 and a lower water tank located below the lower vent 13. The fire-extinguishing gas 53 in the upper water tank is an inert gas lighter than air, while the fire-extinguishing gas in the lower water tank is an inert gas heavier than air. The inert gas in the upper water tank, which is lighter than air, rises upon release, displacing harmful smoke from above, preventing smoke from flowing through the upper door gap, isolating oxygen, and extinguishing the flames above. The inert gas in the lower water tank, which is heavier than air, sinks downward upon release at high temperatures, displacing smoke from below, preventing harmful smoke from flowing through the lower door gap, isolating oxygen, and extinguishing the flames below, providing effective and comprehensive sealing and isolation performance.

[0035] Working process: When the fire door is in normal condition, the driving component 3 adjusts the upper seal and the lower seal to move closer to each other, opens the upper vent 12 and the lower vent 13, and realizes air circulation inside and outside the door for daily ventilation; at the same time, the pushing component 6 drives the second sealing component 5 to be hidden in the cavity 21 of the supporting body 2, without affecting the normal opening and closing of the fire door;

[0036] When a fire occurs, the internal temperature sensing element starts the driver, and the driving component 3 adjusts the upper seal and the lower seal to move away from each other, so that the upper vent 12 and the lower vent 13 are closed; at this time, the sealing plate 41 faces the high temperature environment, and the fireproof foam 46 evaporates after being heated, and the released fire extinguishing gas pushes the fire insulation layer 44 to flip outward, the fire insulation layer 44 of the upper seal flips upward, and the fire insulation layer 44 of the lower seal flips downward, thereby isolating the flame close to the fire door and extinguishing the fire with the fire extinguishing gas; and the water storage chamber 45 and the clay ceramsite layer 47 are also exposed to the outside due to the flipping of the fire insulation layer 44, and then the water storage chamber 45 is interconnected due to the evaporation of the fireproof foam 46, and the water and carbon dioxide therein are sprayed out due to the heat, cooling the fire door and further extinguishing the external flame; the clay ceramsite layer 47 absorbs toxic smoke, improving safety and reducing harm to the human body.

[0037] When the upper and lower sealing members move, the second sealing member 5 is driven to extend outward by the pushing member 6, thereby blocking the upper and lower door gaps, achieving rapid sealing and isolating the flow of smoke and flames.

[0038] After the second sealing assembly 5 is extended, the fireproof sealing strip 54 expands due to heat, blocking the upper and lower door gaps, preventing flames and harmful smoke from flowing through the door gaps. At the same time, the cooling water 52 and fire-extinguishing gas 53 in the water tank 51 break through the sealing membrane after being heated, and are ejected from the first water outlet 55 and the second water outlet 56. The cooling water 52 and fire-extinguishing gas 53 ejected through the first water outlet 55 isolate, cool, and extinguish the flames and harmful smoke in the upper part of the fire door. The cooling water 52 and fire-extinguishing gas 53 ejected through the second water outlet 56 are ejected onto the fireproof sealing strip 54. The cooling water 52 acts as a heat-reducing and insulating agent, reducing damage to the fireproof sealing strip 54 caused by the high-temperature flame. The gas impact force of the fire-extinguishing gas 53 causes the fireproof sealing strip 54 to fit more tightly against the door gap, improving the barrier effect. The upper water tank uses an inert gas that is lighter than air. After being released, it rises and displaces the harmful smoke above, preventing the smoke from circulating through the upper door gap, isolating the oxygen, and extinguishing the flame above; the lower water tank uses an inert gas that is heavier than air. After being released at high temperature, it sinks downward and displaces the smoke below, preventing the harmful smoke from circulating through the lower door gap, isolating the oxygen, and extinguishing the flame below, providing effective and comprehensive sealing and isolation performance.

Claims

1. Safety ventilation fire door with adjustable sealing, characterized by: The invention comprises a first door panel (1) and a second door panel (11), wherein a support body (2) is provided between the first door panel (1) and the second door panel (11), and upper vents (12) are provided on the upper parts of the first door panel (1), the second door panel (11) and the support body (2), and lower vents (13) are provided on the lower parts of the first door panel (1), the second door panel (11) and the support body (2); a driving assembly (3) is provided inside the support body (2), and a first sealing assembly (4) is connected to the driving assembly (3) for respectively closing the upper vents (12) and the lower vents (13); a cavity (21) is provided inside the support body (2) above the upper vents (12) and below the lower vents (13), and a second sealing assembly (5) is provided in the cavity (21) which is connected to the first sealing assembly (4) via a pushing assembly (6), and a second sealing assembly (5) is provided at the top and bottom of the support body (2) for the second sealing assembly (4). The first sealing component (4) includes an upper sealing member for sealing the upper vent (12) and a lower sealing member for sealing the lower vent (13), the upper sealing member and the lower sealing member each including a pair of sealing plates (41) distributed on the left and right, the two sealing plates (41) being connected by a connecting rod (42), the driving component (3) being connected to the connecting rod (42), driving the upper sealing member and the lower sealing member to synchronously seal the upper vent (12) and the lower vent (13) or to synchronously open the upper vent (12) and the lower vent (13); the sealing plate (41) is provided with a groove, the groove being provided with a water storage layer (43) and a fire insulation layer (44) in sequence from the inside to the outside, one end of the fire insulation layer (44) being rotatably connected to the sealing plate (41) by a rotating shaft, the fire insulation layer (44) of the upper sealing member being turned upward by the rotating shaft, and the fire insulation layer (44) of the lower sealing member being turned downward by the rotating shaft; The pushing assembly (6) includes a pushing rod (61), a fixing plate (22) is provided inside the supporting body (2), one end of the pushing rod (61) is connected to the first sealing assembly (4) on the corresponding side, the other end of the pushing rod (61) passes through the fixing plate (22) and is sleeved with a spring (62), one end of the spring (62) is connected to the fixing plate (22), and the other end of the spring (62) is connected to the second sealing assembly (5); the second sealing assembly (5) includes a water tank (51) connected to the pushing assembly (6), the water tank (51) is filled with cooling water (52) and fire extinguishing gas (53), and the water tank A fireproof sealing strip (54) is provided on the side of (51) away from the fire door, a first water outlet (55) communicating with the outside and a second water outlet (56) communicating with the fireproof sealing strip (54) are provided on the water tank (51), and a sealing film is provided on the first water outlet (55) and the second water outlet (56); the water tank (51) includes an upper water tank located above the upper vent (12) and a lower water tank located below the lower vent (13), the fire extinguishing gas (53) in the upper water tank is an inert gas lighter than air, and the fire extinguishing gas (53) in the lower water tank is an inert gas heavier than air.

2. The safety ventilation and fireproof door with adjustable sealing according to claim 1, characterized in that: The water storage layer (43) includes several layers of annular water storage chambers (45) with different diameters. Water and dissolved carbon dioxide are stored in the water storage chambers (45). Adjacent layers of water storage chambers (45) are connected by several guide grooves, and the guide grooves are filled with fireproof foam (46).

3. The safety ventilation and fireproof door with adjustable sealing according to claim 1, characterized in that: A clay ceramsite layer (47) is provided on the side of the sealing plate (41) facing the water storage layer (43), and micropores are provided on the surface of the clay ceramsite layer (47).

4. The safety ventilation and fireproof door with adjustable sealing according to claim 1, characterized in that: The driving assembly (3) comprises a driver, the driver is provided with a driving gear (31), and the upper sealing member and the lower sealing member are both provided with racks (32) respectively meshed with opposite sides of the driving gear (31).

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