Fire door for smoke barrier

Abstract

The utility model discloses a fire door that obstructs smoke and dust, and particularly relates to the technical field of fire doors, comprising a sealing mechanism, the sealing mechanism inner surface rotationally connected with the fire door body, the sealing mechanism front end upper portion fixedly connected with the supporting plate, the supporting plate upper end right side fixedly connected with the spraying mechanism, the supporting plate upper end left side fixedly connected with the expansion mechanism. The fire door that obstructs smoke and dust, through the expansion mechanism and the sealing mechanism set up can fill the gap of door frame and wall instantaneously, can also automatically fill according to the gap shape and width simultaneously, effectively blocks the smoke that rapidly spreads in the initial stage of fire, reduces the risk that personnel is poisoned and suffocated by smoke, through the spraying mechanism set up can form a " heat shield " on the door surface, greatly reduces the surface temperature of fire door, prolongs the effective protection time of fire door, and gains more opportunities for personnel evacuation and fire rescue.

Description

Technical Field

[0001] This utility model relates to the field of fire door technology, and in particular to a fire door that blocks smoke and dust. 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 and other similar locations.

[0003] Existing fire doors rely on sealing strips to isolate smoke. However, normally closed fire doors suffer from strip wear due to frequent opening and closing, rendering them ineffective at blocking smoke. Furthermore, structurally, gaps inevitably exist between fire doors and walls. These gaps are usually caused by installation errors, building settlement, or door deformation, and even with strict installation standards, a completely seamless fit is difficult to achieve. During a fire, the high temperatures create a powerful pressure difference, allowing smoke, like a fine fluid, to easily penetrate these millimeter-sized gaps and spread to other areas.

[0004] Furthermore, existing fire doors lack effective means of actively cooling and blocking smoke when dealing with high temperatures and smoke. The high temperatures generated by a fire not only damage the structural stability of fire doors but also accelerate the spread of smoke. Traditional fire doors cannot actively reduce the door temperature during a fire and are also unable to effectively physically block smoke.

[0005] Therefore, a fireproof door is needed to block smoke and dust. Utility Model Content

[0006] The main objective of this invention is to provide a fireproof door that blocks smoke and dust, which can effectively solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A fireproof door for blocking smoke and dust includes a sealing mechanism, a fireproof door body is rotatably connected to the inner surface of the sealing mechanism, a support plate is fixedly connected to the upper front end of the sealing mechanism, a spray mechanism is fixedly connected to the right upper end of the support plate, and an expansion mechanism is fixedly connected to the left upper end of the support plate.

[0009] Preferably, the sealing mechanism includes a door frame, which is fixedly connected to the rear end of the support plate. Several partitions are fixedly connected in a rectangular pattern to one end of the inner surface of the door frame near the axis. Several through pipes are fixedly connected in a rectangular pattern to one end of the inner surface of the door frame near the axis. An expansion body is fixedly installed in the inner cavity of each of the through pipes.

[0010] Preferably, the plurality of the through pipes are located between two adjacent partitions on the same side, and the end of the plurality of the through pipes near the axis of the door frame extends through the inner wall of the door frame to the outside.

[0011] Preferably, the expansion mechanism includes a sealing box, which is fixedly connected to the upper left side of the support plate. A heat-conducting rod is fixedly connected to the lower end of the sealing box. The lower end of the heat-conducting rod extends through the upper end of the support plate to the outside and is fixedly connected to a sensor. A sodium azide box is fixedly connected to the middle of the inner cavity of the sealing box. A straight pipe is fixedly connected to the lower left end of the sealing box. A second bent pipe is fixedly connected to the left side of the bottom wall of the sealing box. A first bent pipe is fixedly connected to the right side of the bottom wall of the sealing box.

[0012] Preferably, the end of the second bend away from the sealing box passes through the outer surface of the support plate and the front end of the door frame and extends to the outside, while the end of the first bend away from the sealing box passes through the outer surface of the support plate and the front end of the door frame and extends to the right side of the inner cavity of the door frame.

[0013] Preferably, the spraying mechanism includes a water tank and a spray pipe. The water tank is fixedly connected to the upper right side of the support plate, and the fixing plate is fixedly connected to the lower front part of the support plate. The fixing plate is fixedly connected to the lower part of the inner cavity of the water tank. A water outlet is opened on the left side of the fixing plate. A sliding groove is opened on the inner wall of the water outlet. A slider is slidably connected to the inner cavity of the sliding groove. A conical cylinder is fixedly connected to the lower end of the water outlet. A round tube is fixedly connected to the left wall of the inner cavity of the sliding groove. A piston rod is slidably connected to the inner cavity of the round tube.

[0014] Preferably, the right end of the straight pipe penetrates the outer surface of the water tank and is connected to the inner cavity of the circular pipe, and the lower end of the conical cylinder penetrates the bottom wall of the water tank and is connected to the inner cavity of the spray pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. During use, this utility model can instantly fill the gap between the door frame and the wall through the expansion mechanism and sealing mechanism. At the same time, it can automatically fill according to the shape and width of the gap. It can also tightly fit the uneven wall surface or irregular gaps caused by slight deformation of the door frame due to high temperature, effectively blocking the rapid spread of smoke in the early stage of a fire and reducing the risk of people being suffocated by smoke poisoning.

[0017] 2. During use, the spray mechanism of this utility model can form a "heat insulation barrier" on the surface of the door, which can significantly reduce the surface temperature of the fire door, slow down the deformation and damage of the door and sealing structure caused by high temperature, extend the effective protection time of the fire door, and provide more opportunities for personnel evacuation and fire rescue. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of the sealing mechanism of this utility model;

[0020] Figure 3 This is a schematic cross-sectional view of the expansion mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the door frame of this utility model;

[0022] Figure 5 This is a cross-sectional structural diagram of the spraying mechanism of this utility model;

[0023] Figure 6 For the present utility model Figure 5 Enlarged view of point A in the middle;

[0024] Figure 7 This is a schematic diagram of the overall structure of this utility model from another perspective.

[0025] In the diagram: 1. Sealing mechanism; 11. Door frame; 12. Partition plate; 13. Through pipe; 14. Expansion body; 2. Support plate; 3. Expansion mechanism; 31. Sensor; 32. Sealing box; 33. Bend 1; 34. Bend 2; 35. Heat-conducting rod; 36. Sodium azide box; 37. Straight pipe; 4. Spraying mechanism; 41. Water tank; 42. Fixing plate; 43. Slide groove; 44. Slider; 45. Conical cylinder; 46. Round pipe; 47. Piston rod; 48. Spray pipe; 5. Fire door body. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] Example 1, as Figures 1 to 7 As shown, a fireproof door that blocks smoke and dust includes a sealing mechanism 1. The inner surface of the sealing mechanism 1 is rotatably connected to the fireproof door body 5. A support plate 2 is fixedly connected to the upper front end of the sealing mechanism 1. A spraying mechanism 4 is fixedly connected to the upper right side of the support plate 2. An expansion mechanism 3 is fixedly connected to the upper left side of the support plate 2.

[0028] In the specific implementation of this utility model, the sealing mechanism 1 is first installed at the installation position. After installation, water is injected into the spray mechanism 4. During the use of the device, a fire suddenly occurs, generating high-temperature smoke. As the smoke gradually rises, it comes into contact with the internal structure of the expansion mechanism 3. As the temperature of the smoke gradually rises and reaches the preset temperature, the internal structure of the expansion mechanism 3 is instructed to start operating. The internal structure of the expansion mechanism 3 is heated and instantly generates high-pressure gas. This high-pressure gas is then delivered to the sealing mechanism 1 and the spray mechanism 4 through the internal structure of the expansion mechanism 3. When the gas enters the sealing mechanism 1, its internal structure rapidly expands and fills the gap between the fire door body 5 and the sealing mechanism 1, thereby achieving the purpose of blocking smoke. At the same time, the high-pressure gas generated inside the expansion mechanism 3 enters the spray mechanism 4, causing the gas to push the internal structure of the spray mechanism 4. The water source pre-filled inside the spray mechanism 4 then sprays onto the fire door body 5, forming a water curtain that acts as a "heat insulation barrier," significantly reducing the surface temperature of the fire door.

[0029] Example 2: In order to achieve the purpose of generating high-pressure gas, refer to... Figure 3 and Figure 4 In this scheme, the expansion mechanism 3 includes a sealing box 32, which is fixedly connected to the upper left side of the support plate 2. A heat-conducting rod 35 is fixedly connected to the lower end of the sealing box 32. The lower end of the heat-conducting rod 35 extends through the upper end of the support plate 2 to the outside and is fixedly connected to a sensor 31. A sodium azide box 36 is fixedly connected to the middle of the inner cavity of the sealing box 32. A straight pipe 37 is fixedly connected to the lower left end of the sealing box 32. A second bent pipe 34 is fixedly connected to the left side of the bottom wall of the sealing box 32. A first bent pipe 33 is fixedly connected to the right side of the bottom wall of the sealing box 32.

[0030] Furthermore, the end of the second bend 34 away from the sealing box 32 passes through the outer surface of the support plate 2 and the front end of the door frame 11 and extends to the outside, while the end of the first bend 33 away from the sealing box 32 passes through the outer surface of the support plate 2 and the front end of the door frame 11 and extends to the right side of the inner cavity of the door frame 11.

[0031] In the above-mentioned process, when a fire occurs, the sensor 31 detects the rising smoke and issues an alarm to alert personnel. As the smoke temperature gradually rises, the heat-conducting rod 35 is heated. When the heat-conducting rod 35 reaches a certain temperature, it is directly conducted to the sodium azide box 36. The sodium azide inside the sodium azide box 36 is heated to a certain temperature and instantly generates a large amount of high-pressure nitrogen gas. The generated high-pressure gas enters the internal structure of the sealing mechanism 1 through the bend 33 and bend 34, causing the internal structure of the sealing mechanism 1 to expand and fill the gaps to block the smoke. At the same time, the gas also enters the inner cavity of the straight pipe 37, and then enters the internal structure of the spray mechanism 4 through the straight pipe 37 to drive the operation of the internal structure of the spray mechanism 4.

[0032] Specifically, in order to achieve the purpose of filling the door gaps, refer to Figure 2 and Figure 4 In this solution, the sealing mechanism 1 includes a door frame 11, which is fixedly connected to the rear end of the support plate 2. Several partitions 12 are fixedly connected in a rectangular distribution on the inner surface of the door frame 11 near the axis. Several through pipes 13 are fixedly connected in a rectangular distribution on the inner surface of the door frame 11 near the axis. An expansion body 14 is fixedly installed in the inner cavity of each of the several through pipes 13.

[0033] Furthermore, several of the aforementioned pipes 13 are located between two adjacent partitions 12 on the same side, and one end of each of the aforementioned pipes 13 near the axis of the door frame 11 extends through the inner wall of the door frame 11 to the outside.

[0034] In the above process, a large amount of high-pressure nitrogen gas is generated and enters the left and right parts of the inner cavity of the door frame 11 through the first bend 33 and the second bend 34. The high-pressure nitrogen gas pushes the expansion body 14 through several pipes 13, causing the expansion body 14 to expand and fill the gap between the fire door body 5 and the door frame 11, thereby achieving the purpose of isolating smoke.

[0035] The expansion body 14 mentioned above can be made of "ceramic fiber refractory fiber" in the prior art, which is a man-made fiber with alumina and silicon oxide as the main components. It can withstand a long-term service temperature of 1000-1400℃ and a short-term high temperature of over 1600℃. It does not melt or burn. It can be prefabricated into a folded or compressed module, which can be quickly expanded and fluffed up after being pushed by nitrogen gas to fill the gaps and form an elastic sealing layer. This utility model will not elaborate further.

[0036] Specifically, in order to achieve the purpose of spraying water curtain onto the fire door body 5, refer to Figure 5 and Figure 6In this scheme, the spraying mechanism 4 includes a water tank 41 and a spray pipe 48. The water tank 41 is fixedly connected to the upper right side of the support plate 2, and the fixing plate 42 is fixedly connected to the lower front part of the support plate 2. The fixing plate 42 is fixedly connected to the lower part of the inner cavity of the water tank 41. A water outlet is opened on the left side of the fixing plate 42. A sliding groove 43 is opened on the inner wall of the water outlet. A slider 44 is slidably connected to the inner cavity of the sliding groove 43. A conical cylinder 45 is fixedly connected to the lower end of the water outlet. A round tube 46 is fixedly connected to the left wall of the inner cavity of the sliding groove 43. A piston rod 47 is slidably connected to the inner cavity of the round tube 46.

[0037] Furthermore, the right end of the straight pipe 37 penetrates the outer surface of the water tank 41 and is connected to the inner cavity of the round pipe 46, and the lower end of the conical cylinder 45 penetrates the bottom wall of the water tank 41 and is connected to the inner cavity of the spray pipe 48.

[0038] In the above process, high-pressure nitrogen gas enters the inner cavity of the circular tube 46 through the straight pipe 37, causing the gas to push the piston rod 47 to move to the right within the circular tube 46. This causes the piston rod 47 to push the slider 44 into the right side of the inner cavity of the slide groove 43, thereby connecting the water outlet with the conical cylinder 45. The water source stored in the inner cavity of the water tank 41 then enters the inner cavity of the spray pipe 48 through the conical cylinder 45, and the spray pipe 48 sprays water onto the surface of the fire door body 5.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fireproof door for blocking smoke and dust, comprising a sealing mechanism (1), characterized in that: The inner surface of the sealing mechanism (1) is rotatably connected to the fire door body (5), the upper front end of the sealing mechanism (1) is fixedly connected to the support plate (2), the upper right side of the support plate (2) is fixedly connected to the spray mechanism (4), and the upper left side of the support plate (2) is fixedly connected to the expansion mechanism (3).

2. The fireproof door for blocking smoke and dust according to claim 1, characterized in that: The sealing mechanism (1) includes a door frame (11), which is fixedly connected to the rear end of the support plate (2). Several partitions (12) are fixedly connected in a rectangular distribution on the inner surface of the door frame (11) near the axis. Several through pipes (13) are fixedly connected in a rectangular distribution on the inner surface of the door frame (11) near the axis. An expansion body (14) is fixedly installed in the inner cavity of each of the several through pipes (13).

3. A fireproof door for blocking smoke and dust according to claim 2, characterized in that: Several of the aforementioned pipes (13) are located between two adjacent partitions (12) on the same side, and one end of each of the aforementioned pipes (13) near the axis of the door frame (11) extends through the inner wall of the door frame (11) to the outside.

4. A fireproof door for blocking smoke and dust according to claim 2, characterized in that: The expansion mechanism (3) includes a sealing box (32), which is fixedly connected to the upper left side of the support plate (2). A heat-conducting rod (35) is fixedly connected to the lower end of the sealing box (32). The lower end of the heat-conducting rod (35) extends through the upper end of the support plate (2) to the outside and is fixedly connected to a sensor (31). A sodium azide box (36) is fixedly connected to the middle of the inner cavity of the sealing box (32). A straight pipe (37) is fixedly connected to the lower left end of the sealing box (32). A second bent pipe (34) is fixedly connected to the left side of the bottom wall of the sealing box (32). A first bent pipe (33) is fixedly connected to the right side of the bottom wall of the sealing box (32).

5. A fireproof door for blocking smoke and dust according to claim 4, characterized in that: The end of the second bend (34) away from the sealing box (32) passes through the outer surface of the support plate (2) and the front end of the door frame (11) and extends to the outside. The end of the first bend (33) away from the sealing box (32) passes through the outer surface of the support plate (2) and the front end of the door frame (11) and extends to the right side of the inner cavity of the door frame (11).

6. A fireproof door for blocking smoke and dust according to claim 4, characterized in that: The spraying mechanism (4) includes a water tank (41) and a spray pipe (48). The water tank (41) is fixedly connected to the upper right side of the support plate (2). The fixing plate (42) is fixedly connected to the lower front part of the support plate (2). The fixing plate (42) is fixedly connected to the lower part of the inner cavity of the water tank (41). A water outlet is provided on the left side of the fixing plate (42). A sliding groove (43) is provided on the inner wall of the water outlet. A slider (44) is slidably connected to the inner cavity of the sliding groove (43). A conical cylinder (45) is fixedly connected to the lower end of the water outlet. A round tube (46) is fixedly connected to the left wall of the inner cavity of the sliding groove (43). A piston rod (47) is slidably connected to the inner cavity of the round tube (46).

7. A fireproof door for blocking smoke and dust according to claim 6, characterized in that: The right end of the straight pipe (37) penetrates the outer surface of the water tank (41) and is connected to the inner cavity of the round pipe (46), and the lower end of the conical cylinder (45) penetrates the bottom wall of the water tank (41) and is connected to the inner cavity of the spray pipe (48).

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