Special thermal-insulation airtight fireproof door and window for low-temperature grain storage
By using steel plates coated with fire-retardant paint and high-temperature resistant rigid fireproof materials with an aerogel insulation layer in fire-resistant doors and windows, combined with a high-pressure filled polyurethane layer and sealants, the airtightness and heat preservation problems of fire-resistant doors and windows in grain storage have been solved, achieving overall fireproof and heat preservation effects for fire-resistant doors and windows.
Patent Information
- Application Number
- CN202520166195.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-24
AI Technical Summary
Existing grain storage facilities lack dedicated fireproof doors and windows for insulation and airtightness, which cannot effectively prevent the spread of fire and save on building fire safety clearance.
The structure consists of steel plates coated with fire-retardant paint, bonded with high-temperature resistant rigid fire-retardant material and an aerogel insulation layer, combined with a high-pressure filled polyurethane layer to fill the gaps, and sealed joints with sealants to form an airtight overall structure.
It achieves airtightness and thermal insulation performance of fireproof doors and windows, effectively preventing internal fires and maintaining temperature, reducing assembly gaps, and enhancing fire resistance.
Smart Images
Figure CN223838984U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of heat-insulating and airtight fireproof doors and windows, and in particular to heat-insulating and airtight fireproof doors and windows for low-temperature grain storage. Background Technology
[0002] Fire doors are typically installed in enclosed spaces such as stairwells, elevator shafts, cable shafts, and smoke exhaust ducts. Their function is to maintain fire resistance and provide insulation for a certain period, preventing the spread of fire and ensuring safe evacuation. They are essential equipment in firefighting operations and are commonly used in civil buildings.
[0003] Food is the most basic material need for human survival, providing the body with the necessary nutrients such as energy, protein, carbohydrates, fats, vitamins, and minerals, which are crucial for maintaining life activities and physical health.
[0004] However, there is no fireproof door or window specifically designed for grain storage in existing grain warehouses. Moreover, the existing grain warehouses use insulated and airtight fireproof doors and windows specifically designed for low-temperature grain storage, which can reduce the building fire safety distance in the construction drawings, thereby saving land use costs. Utility Model Content
[0005] This utility model provides a special insulated, airtight, and fireproof door and window for low-temperature grain storage, which solves the technical problem that existing fireproof doors and windows cannot achieve heat preservation and airtightness. This utility model uses a steel plate with a fireproof coating on the inside and a layer of high-temperature resistant rigid fireproof material bonded together with an aerogel insulation layer. The gaps and joints between the two steel plates are filled with a polyurethane layer under high pressure, which can prevent the entire interior of the fireproof door and window from catching fire. The connection between the steel plate and the door and window frame is sealed with a sealing element, which increases the airtightness of the connection between the steel plate and the door and window frame, and the interior of the fireproof door and window can be kept warm.
[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:
[0007] Insulated, airtight, and fireproof doors and windows specifically designed for low-temperature grain storage include:
[0008] Door and window frames;
[0009] The steel profile is used to fix the door and window frame, and serves as a supporting skeleton for the door and window frame. The steel profile is located inside the door and window frame.
[0010] The steel plate is connected to the door and window frame by hinges or directly to the door and window frame. The inside of the steel plate is coated with fireproof paint and bonded with a layer of high temperature resistant rigid fireproof material plus aerogel insulation layer. The gaps and joints between the two steel plates can be filled tightly by high pressure injection of polyurethane layer.
[0011] The sealing element is installed at the connection between the steel plate and the door / window frame. The sealing element is used to seal the connection between the steel plate and the door / window frame.
[0012] The interior of the fireproof door and window is coated with fire-retardant paint and bonded with a layer of high-temperature resistant rigid fireproof material and a layer of aerogel insulation. The gaps and joints between the two steel plates are filled with polyurethane under high pressure, which can prevent the entire interior of the fireproof door and window from catching fire. The connection between the steel plate and the door and window frame is sealed with a sealant to increase the airtightness of the connection between the steel plate and the door and window frame, and the interior of the fireproof door and window can be insulated.
[0013] Optionally, fireproof material is bonded to the steel plate. The fireproof material is located inside the steel plate. After the fireproof coating is applied to the inside of the steel plate, a layer of high-temperature resistant rigid fireproof material plus aerogel insulation layer is bonded. The fire resistance temperature of the steel plate exceeds 1000 degrees.
[0014] Optionally, there is a perforated layer between the two fire-resistant materials.
[0015] Optionally, a high-pressure filled polyurethane layer is provided inside the hollow layer, and the material of the high-pressure filled polyurethane layer is polyurethane or other thermal insulation materials.
[0016] Optionally, the high-temperature resistant fireproof material layer is tightly bonded to the high-pressure filled polyurethane layer to increase the airtightness of the interior of the fireproof door and window, so that the interior of the fireproof door and window can be insulated.
[0017] Optionally, two adjacent door or window frames can be connected by a diagonal contact method.
[0018] Optionally, the steel profiles at the corners of the door and window frames are provided with arc-shaped guide corners, which are used to guide the rubber strips.
[0019] Optionally, the sealing strip is an inflatable sealing strip. After the inflatable sealing strip is fully inflated and expands, it seals the gap between the door / window frame and the steel profile.
[0020] Optionally, reinforcing ribs are connected to the door and window frames, and fixing plates for installing door locks are provided on the door and window frames.
[0021] Optionally, the material for door and window frames is profile.
[0022] The beneficial effects of this utility model are:
[0023] 1. The steel plate of this utility model is coated with a fire-retardant paint and bonded with a layer of high-temperature resistant rigid fire-retardant material plus aerogel insulation layer. The sealing element is set at the connection between the steel plate and the door and window frame. The sealing element is used to seal the connection between the steel plate and the door and window frame. By coating the steel plate with fire-retardant paint and bonding it with a layer of high-temperature resistant rigid fire-retardant material plus aerogel insulation layer, the fire inside the fireproof door and window can be prevented from catching fire. By sealing the connection between the steel plate and the door and window frame with the sealing element, the airtightness of the connection between the steel plate and the door and window frame is increased, and the inside of the fireproof door and window can be kept warm.
[0024] 2. The steel plate of this utility model is covered with fireproof material, which is located inside the steel plate. The fireproof material itself has a heat preservation function, and the fireproof material insulates the entire interior of the fireproof door and window.
[0025] 3. The hollow layer of this utility model is provided with a high-pressure filled polyurethane layer. The high-pressure filled polyurethane layer is used for filling, so that the entire fireproof door and window is filled into a whole. The fireproof door and window form a whole structure without any splicing gaps, which increases the airtightness of the fireproof door and window. The interior of the fireproof door and window can be insulated and the whole can be sealed.
[0026] 4. This utility model uses a set of sealing strips and a set of inflatable strips installed inside the door and window frame. The strips cover the outer wall of the overall door and window sash and the outer wall of the steel frame. There are strips at the top, bottom, left and right positions inside the door and window frame. The airtight sealing effect of the strips seals the gap between the door and window frame and the steel frame, increasing the airtightness between the door and window frame and the steel frame. The strips also seal the gap between the door and window frame and the overall door and window sash, increasing the airtightness between the window frame and the foam board.
[0027] At the same time, a set of fireproof rubber strips is used, and the rubber strips are wrapped around the outer wall of the entire door and window sash and the outer wall of the steel frame. There are fireproof rubber strips on the top, bottom, left and right sides of the door and window frame. The function of the fireproof rubber strips is that when exposed to heat or fire, the rubber strips quickly expand and seal the gap between the door and window frame and the steel frame, increasing the smoke and fire isolation effect between the door and window frame and the steel frame, so that the entire fireproof door and window meets the fire protection requirements. Attached Figure Description
[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0029] Figure 1 This is a structural diagram of the present invention from the front view.
[0030] Figure 2 This utility model Figure 1A magnified view of the structure at point C;
[0031] Figure 3 This utility model Figure 1 AA cross-sectional view of the structure;
[0032] Figure 4 This utility model Figure 1 BB cross-sectional structural diagram;
[0033] Figure 5 A structural diagram showing the reinforcement ribs and fixing plates for the door and window frames of this utility model.
[0034] Icons: 1-Door and window frame, 2-Steel profile, 3-Steel plate, 4-High temperature resistant rigid fireproof material with aerogel insulation layer, 5-High pressure filling polyurethane layer, 6-Sealing component, 7-Hinge, 8-Reinforcing rib, 9-Fixing plate, 11-Rounded guide angle. Detailed Implementation
[0035] The embodiments of this application will now be described in detail with reference to the accompanying drawings.
[0036] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0037] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0038] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to welding, bolting, or riveting; they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0039] Example 1
[0040] like Figure 1 As shown, this embodiment provides a special insulated, airtight, and fireproof door and window for low-temperature grain storage, including: a door / window frame 1, steel profiles 2, steel plates 3, and sealing components 6; the steel profiles 2 are used to fix the door / window frame 1, serving as the supporting skeleton for the door / window frame 1, and are located inside the door / window frame 1. Figure 3 The upper steel plate 3 is movably connected to the door and window frame 1 via hinge 7. Figure 3 The lower end steel plate 3 is directly connected to the door and window frame 1. The interior of the steel plate 3 is coated with fire-retardant paint (such as HIPS fire-retardant paint or RLHY-12 high-temperature heat insulation paint) and bonded with a layer of high-temperature resistant rigid fireproof material plus aerogel insulation layer 4.
[0041] The sealing element 6 is installed at the connection between the steel plate 3 and the door and window frame 1. The sealing element 6 is used to seal the connection between the steel plate 3 and the door and window frame 1, thereby increasing the airtightness of the connection between the steel plate 3 and the door and window frame 1.
[0042] By coating the inside of the steel plate 3 with fire-retardant paint and bonding a layer of high-temperature resistant rigid fireproof material and aerogel insulation layer 4, the fire inside the fireproof door and window can be prevented from catching fire. The connection between the steel plate 3 and the door and window frame 1 is sealed by the sealing element 6, which increases the airtightness of the fireproof door and window and allows the inside of the fireproof door and window to be insulated.
[0043] Example 2
[0044] Based on Example 1, such as Figure 3 Or such as Figure 4 As shown, a layer of high-temperature resistant rigid fireproof material aerogel insulation cotton layer 4 (which can be perlite board) is attached to the steel plate 3. The high-temperature resistant rigid fireproof material aerogel insulation cotton layer 4 is located inside the steel plate 3.
[0045] A perforated layer exists between two layers of high-temperature resistant rigid fireproof material and aerogel insulation 4. Within this perforated layer is a high-pressure filled polyurethane layer 5. The high-pressure filled polyurethane layer 5 is made of polyurethane or other thermal insulation materials. Within the perforated layer, the high-pressure filled polyurethane or other thermal insulation materials (i.e., fillers capable of secondary foaming, such as ethylene-vinyl acetate copolymer) are foamed, causing the entire fireproof door and window to be foamed into a single unit, resulting in excellent internal thermal insulation performance. Through the application of this integral filling technology, the fireproof door and window can form a seamless, integrated structure without any seams. The high-temperature resistant rigid fireproof material and aerogel insulation 4 are thus tightly bonded to the high-pressure filled polyurethane layer 5, increasing the airtightness of the fireproof door and window.
[0046] Example 3
[0047] Based on Example 1, such as Figure 2 As shown, the steel profile 2 inside the corner of the door / window frame 1 is provided with an arc-shaped guide angle 11. The arc-shaped guide angle 11 is used to guide the rubber strip (not shown in the figure), that is, combined with Figure 1 and Figure 2 As shown, a single rubber strip is fitted inside the door / window frame 1, covering the outer wall of the high-pressure filled polyurethane layer 5 and the outer wall of the steel profile 2. Rubber strips are present at the top, bottom, left, and right positions inside the door / window frame 1. The rubber strip is an inflatable sealing strip (it can be any one of silicone sealing strips, polyurethane sealing strips, or EPDM sealing strips). After the inflatable sealing strip is fully inflated and expands, it seals the gap between the door / window frame 1 and the steel profile 2, increasing the airtightness between them. It also seals the gap between the door / window frame 1 and the foam board 5, increasing the airtightness between the door / window frame 1 and the high-pressure filled polyurethane layer 5.
[0048] like Figure 1 As shown, two adjacent door / window frames 1 are connected by a beveled joint, meaning that the two adjacent door / window frames 1 are joined and welded together at a 45° angle. This reduces the reaction force of the sealing strip on the door / window frame 1 and also makes the entire fireproof door / window tighter as it is closed.
[0049] Example 4
[0050] Based on Example 1, such as Figure 5 As shown, a reinforcing rib 8 is welded to the door and window frame 1. The reinforcing rib 8 can be welded to the inner wall of the door and window frame 1. The door and window frame 1 is provided with a fixing plate 9 for installing the door lock. The fixing plate 9 is used to fix the door lock. The material of the door and window frame 1 is a profile (such as GH4099 steel profile). The fire resistance temperature of the profile exceeds 1000 degrees.
[0051] Example 5
[0052] Based on all the above embodiments, the interior of the steel plate 3 of this utility model is coated with fire-retardant paint and bonded with a layer of high-temperature resistant rigid fire-retardant material plus aerogel insulation layer 4. The fire resistance temperature of the steel plate 3 (e.g., 310S steel plate) coated with fire-retardant paint and bonded with a layer of high-temperature resistant rigid fire-retardant material plus aerogel insulation layer 4 exceeds 1000 degrees, preventing the entire interior of the fireproof door and window from catching fire. After the interior of the steel plate 3 is coated with fire-retardant paint and bonded with a layer of high-temperature resistant rigid fire-retardant material plus aerogel insulation layer 4, the fire resistance time of the door and window frame 1 and the steel plate 3 exceeds 1.5 hours. The connection between the steel plate 3 and the door and window frame 1 is sealed by the sealing element 6. The sealing element 6 at the connection between the steel plate 3 and the door and window frame 1 has airtightness, and the interior of the fireproof door and window can be insulated.
[0053] A high-pressure polyurethane layer 5 is installed inside the perforated layer or between the two steel plates 3. The filling of the high-pressure polyurethane layer 5 makes the entire fireproof door and window a whole, forming a structure without any splicing gaps, which increases the airtightness of the fireproof door and window and enables the interior of the fireproof door and window to be insulated.
[0054] The entire rubber strip is fitted inside the door and window frame 1, and the rubber strip covers the outer wall of the high-pressure filled polyurethane layer 5 and the outer wall of the steel profile 2. Figure 1 There are rubber strips on the top, bottom, left and right sides of the door and window frame 1. The rubber strips seal the gap between the door and window frame 1 and the steel 2 when inflated. They also seal the gap between the door and window frame 1 and the high-pressure filled polyurethane layer 5, further increasing the airtightness of the fireproof door and window and enabling the interior of the fireproof door and window to be insulated.
[0055] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope described in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A special insulated, airtight, fireproof door and window for low-temperature grain storage, characterized in that, include: Door and window frames (1); The steel section (2) is used to fix the door and window frame (1). The steel section (2) serves as the skeleton supporting the door and window frame (1). The steel section (2) is located inside the door and window frame (1). Steel plate (3), the steel plate (3) is movably connected to the door and window frame (1) by hinge (7), or the steel plate (3) is directly connected to the door and window frame (1). The interior of the steel plate (3) is coated with fireproof paint for fire prevention, and a high-temperature resistant hard fireproof material plus aerogel insulation layer (4) is bonded. The gaps and splicing seams between the two steel plates (3) are filled tightly by high-pressure injection of polyurethane layer (5). A sealing element (6) is provided at the connection between the steel plate (3) and the door and window frame (1). The sealing element (6) is used to seal the connection between the steel plate (3) and the door and window frame (1).
2. The insulated, airtight, fireproof door and window for low-temperature grain storage as described in claim 1, characterized in that, The steel plate (3) is fitted with the high-temperature resistant rigid fireproof material plus aerogel insulation layer (4). After the fireproof coating is applied to the inside of the steel plate (3), a layer of high-temperature resistant rigid fireproof material plus aerogel insulation layer (4) is bonded together.
3. The insulated, airtight, fireproof door and window for low-temperature grain storage as described in claim 2, characterized in that, There is a perforated layer between the two high-temperature resistant rigid fireproof materials and aerogel insulation layers (4).
4. The insulated, airtight, fireproof door and window for low-temperature grain storage as described in claim 3, characterized in that, The hollow layer is provided with the high-pressure filling polyurethane layer (5), which fills the board seams and splicing seams tightly. The material of the high-pressure filling polyurethane layer (5) is polyurethane.
5. The insulated, airtight, fireproof door and window for low-temperature grain storage as described in claim 2, characterized in that, The high-temperature resistant rigid fireproof material aerogel insulation layer (4) is tightly bonded to the high-pressure filled polyurethane layer (5).
6. The insulated, airtight, fireproof door and window for low-temperature grain storage as described in claim 1, characterized in that, The two adjacent door and window frames (1) are connected by a diagonal contact method.
7. The insulated, airtight, fireproof door and window for low-temperature grain storage as described in claim 1, characterized in that, The steel profile (2) inside the corner of the door and window frame (1) is provided with an arc guide angle (11), which is used to guide the rubber strip.
8. The insulated, airtight, fireproof door and window for low-temperature grain storage as described in claim 7, characterized in that, The rubber strip is an inflatable sealing strip. After the inflatable sealing strip is filled with air and expanded, it seals the gap between the door and window frame (1) and the steel profile (2).
9. The insulated, airtight, fireproof door and window for low-temperature grain storage as described in claim 1, characterized in that, A reinforcing rib (8) is connected to the door and window frame (1), and a fixing plate (9) for installing a door lock is provided on the door and window frame (1).
10. The thermally insulated, airtight, and fireproof door and window for low-temperature grain storage according to claim 1, characterized in that, The material of the door and window frame (1) is profile.