High air-tight and mute steel fireproof door

Abstract

The utility model discloses a kind of high airtight mute steel fireproof door, it is related to fire door technical field, including wall and the door frame fixed on it, door body is rotatably connected on door frame, and door body is in the door frame frame mouth activity;It also includes the first densification component fixed between wall and door frame;First densification component includes the accommodating cavity in the inboard of door frame and the expansion seal strip fixedly adhered in accommodating cavity, expansion seal strip outside adheres wall, accommodating cavity is annular shape and it is surrounded in the door frame frame mouth outside, it also includes the second densification component between door frame frame mouth and door body;The utility model has the advantages that: by the installation cavity between wall and door frame Additional setting expansion seal strip to improve airtightness, and when fire occurs, expansion seal strip expands under the increase of temperature, effectively filled between the installation cavity of wall and door frame, to further reduce smoke and heat circulation.

Description

Technical Field

[0001] This utility model relates to the field of fire door technology, and more specifically to a high airtight and silent steel fire door. Background Technology

[0002] Fire doors are doors specifically designed to prevent the spread of fire. They not only effectively isolate flames but also prevent smoke and heat from passing through for a certain period of time, thus providing valuable time for evacuation and helping to limit the impact of a fire on other parts of the building. The existing fire door application "Application No.: CN201310755338.3, Horizontal door frame fire door with pre-embedded expansion sealing strip" states: "The fire door frame is also provided with an expansion sealing strip, the expansion sealing strip is located inside the fire door frame, the expansion sealing strip is fixedly connected to the fire door frame, when the fire spreads rapidly, the expansion sealing strip will expand with the increase of temperature, thereby effectively filling the gap between the fire door frame and the fire door"; The aforementioned fire door is only installed between the fire door frame and the fire door. Over time, gaps may form between the fire door frame and the wall where it is installed due to vibration or thermal expansion and contraction of the materials, resulting in poor sealing performance. Utility Model Content

[0003] The purpose of this utility model is to provide a high-airtightness, silent steel fire door in order to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution: This utility model proposes a high airtight and silent steel fire door, comprising: The wall and the door frame fixed on it, with the door body rotatably connected to the door frame and the door body moving within the door frame opening; It also includes a first densification component fixed between the wall and the door frame; The first densification component includes a receiving cavity located inside the door frame and an expansion sealing strip fixed inside the receiving cavity. The expansion sealing strip is attached to the wall on the outside. The receiving cavity is annular and surrounds the door frame opening.

[0005] As a preferred technical solution of this utility model, the first densification component is provided with two sets, and the accommodating cavities of the two sets are arranged from the inside to the outside of the door frame opening.

[0006] As a preferred embodiment of the present invention, the first densification component further includes a groove disposed on the outside of the door frame, the groove being close to the receiving cavity.

[0007] As a preferred embodiment of this utility model, the groove is provided in multiple sets and its corresponding receiving cavity is evenly distributed in a ring, and there is a gap between each pair of adjacent grooves.

[0008] As a preferred embodiment of this utility model, the method further includes a second densification component between the door frame opening and the door body.

[0009] As a preferred embodiment of the present invention, the second densification component includes: The first L-shaped ring plate is fixed to the door frame on its outer side; The second L-shaped ring plate is fixed to the outer side of the first L-shaped ring plate, and a groove is formed between the second L-shaped ring plate and the first L-shaped ring plate. The washer is fitted and fixed inside the groove, and is located on the inside side of the door frame opening. The outside of the washer is fitted and pressed tightly against the door body.

[0010] As a preferred technical solution of this utility model, the door body is composed of a door shell and a rock wool layer or glass wool layer filled inside it, and the outer side of the door shell is rotatably connected to the door frame.

[0011] The beneficial effects of this utility model are as follows: Air tightness is improved by adding an expansion sealing strip between the mounting cavity of the wall and the door frame. In the event of a fire, the expansion sealing strip expands as the temperature rises, effectively filling the space between the mounting cavity of the wall and the door frame to further reduce the flow of smoke and heat. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure viewed from below.

[0013] Reference numerals: wall-1, door frame-2, first densification component-3, door-4, second densification component-5, receiving cavity-31, expansion sealing strip-32, groove-33, first L-shaped ring plate-51, second L-shaped ring plate-52, gasket-53. Detailed Implementation

[0014] like Figures 1-2 As shown, this utility model proposes: a high airtight and silent steel fire door, comprising; The wall 1 and the door frame 2 fixed on it, the door 4 is rotatably connected to the door frame 2, and the door 4 moves within the frame opening of the door frame 2; the wall 1 is partially built into the mounting cavity on the periphery of the door frame 2 to improve the strength when it is stable; the door 4 is connected to the door frame 2 by hinges and other rotating parts, and can rotate in and out of the frame opening of the door frame 2 to open and close. The door body 4 consists of a door shell and a rock wool or glass wool layer inside it. The outer side of the door shell is rotatably connected to the door frame 2. The rock wool or glass wool layer improves the sound insulation function and provides fire resistance. It also includes a first densification component 3 fixed between the wall 1 and the door frame 2; Specifically: The first airtightening component 3 includes a receiving cavity 31 located inside the door frame 2 and an expansion sealing strip 32 fixedly attached inside the receiving cavity 31. The outer side of the expansion sealing strip 32 is attached to the wall 1. The receiving cavity 31 is annular and surrounds the opening of the door frame 2. An expansion sealing strip 32 is additionally installed between the installation cavity of the wall 1 and the door frame 2 to improve airtightness. In the event of a fire, the expansion sealing strip 32 expands as the temperature rises, effectively filling the space between the installation cavity of the wall 1 and the door frame 2. There is a reserved cavity between the expansion sealing strip 32 and the receiving cavity 31 to provide filling space when the expansion sealing strip 32 expands, so as to reduce the possibility of structural damage.

[0015] The first densification component 3 has two sets, and the receiving cavities 31 of the two sets are arranged in a ring around the opening of the door frame 2 from the inside to the outside. As shown in the figure, two sets of the first densification components 3 are respectively arranged on the front and back sides between the installation cavity of the wall 1 and the door frame 2, and the receiving cavities 31 of the two sets of the first densification components 3 are arranged in a ring around the opening of the door frame 2 from the inside to the outside, so as to further improve the sealing strength.

[0016] The first densification component 3 also includes a groove 33 located on the outside of the door frame 2, which is close to the receiving cavity 31. The groove 33 is provided on the outside of the door frame 2 corresponding to the position of the receiving cavity 31 so as to improve the rapid transfer of heat to the expansion sealing strip 32 inside the receiving cavity 31 in the event of a fire, thereby improving the response efficiency. The groove 33 is not connected to the receiving cavity 31 to ensure that the expansion sealing strip 32 will not run out.

[0017] The grooves 33 are provided in multiple sets and their corresponding receiving cavities 31 are evenly distributed in a ring, and there is a gap between each pair of adjacent grooves 33; while increasing the range of heat transfer to the receiving cavity 31, the gap can also ensure the good strength of the door frame 2.

[0018] It also includes a second densification component 5 located between the door frame 2 and the door body 4.

[0019] Specifically: the second encryption component 5 includes; The first L-shaped ring plate 51 is fixed to the door frame 2 on its outer side; The second L-shaped ring plate 52 is fixed to the outer side of the first L-shaped ring plate 51, and a groove is formed between the second L-shaped ring plate 52 and the first L-shaped ring plate 51. Washer 53 is fitted and fixed inside the groove. Washer 53 is located inside the frame opening of the door frame 2. The outer side of washer 53 is fitted and pressed tightly against the door body 4. The material of washer 53 is silicone rubber. like Figure 2 As shown, the first L-shaped ring plate 51 is fixed to the front end of the second L-shaped ring plate 52 to form an integral unit. The first L-shaped ring plate 51 drives the second L-shaped ring plate 52 to extend into the frame opening of the door frame 2. At this time, the first L-shaped ring plate 51 fits into the door frame 2 and is then secured with fasteners (bolts, etc.). The washer 53 is pre-secured with adhesive at the ring groove. The rear end of the washer 53 protrudes from the ring groove to fit into the door body 4. The overall structure is simple.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0021] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-airtightness, silent steel fire door, comprising: The wall (1) and the door frame (2) fixed on it, the door body (4) is rotatably connected to the door frame (2), and the door body (4) moves within the frame opening of the door frame (2); Its features are, It also includes a first densification component (3) fixed between the wall (1) and the door frame (2); The first densification component (3) includes a receiving cavity (31) located inside the door frame (2) and an expansion sealing strip (32) fixed inside the receiving cavity (31). The expansion sealing strip (32) is attached to the wall (1) on the outside. The receiving cavity (31) is ring-shaped and surrounds the door frame (2) opening.

2. The high airtightness, silent steel fire door according to claim 1, characterized in that, The first densification component (3) has two sets of receiving cavities (31) of the two sets, which are arranged from the inside to the outside of the door frame (2).

3. The high airtightness, silent steel fire door according to claim 1, characterized in that, The first densification component (3) also includes a groove (33) located on the outside of the door frame (2), the groove (33) being close to the receiving cavity (31).

4. A high airtight, silent steel fire door according to claim 3, characterized in that, The grooves (33) are provided in multiple sets and their corresponding receiving cavities (31) are evenly distributed in a ring, and there is a gap between each two adjacent sets of grooves (33).

5. A high airtight, silent steel fire door according to claim 1, characterized in that, It also includes a second densification component (5) between the door frame (2) and the door body (4).

6. A high airtight, silent steel fire door according to claim 5, characterized in that, The second densification component (5) includes; The first L-shaped ring plate (51) is fixed to the door frame (2) on the outside; The second L-shaped ring plate (52) is fixed to the first L-shaped ring plate (51) on the outside, and a groove is formed between the second L-shaped ring plate (52) and the first L-shaped ring plate (51); Washer (53) is fitted and fixed in the groove. Washer (53) is located inside the frame opening of the door frame (2). The outer side of the washer (53) is fitted and pressed against the door body (4).

7. A high airtight, silent steel fire door according to claim 1, characterized in that, The door body (4) consists of a door shell and a rock wool or glass wool layer filled inside it. The outer side of the door shell is rotatably connected to the door frame (2).

Images