Fireproof waterstop and building deformation joint

Abstract

The utility model discloses a fireproof water-stop belt and a building deformation joint, and relates to the technical field of building materials. The composite material comprises an outer shell made of an elastic composite material, an aerogel felt body adhered to the inner side of the outer shell, and a polyurethane foam body adhered to one side of the outer shell and / or the aerogel felt body, the polyurethane foam body is adhered to one side, far away from the outer shell, of the aerogel felt body; the outer shell and the aerogel felt body are both U-shaped; the polyurethane foam body is in a bullet shape. By the adoption of the technical scheme, the fireproof waterstop adapts to the working condition that the deformation joint can move, has the fireproof function and the waterproof function at the same time, and only needs to be installed at a time, so that the deformation joint has the fireproof and waterproof capacity.

Description

Technical Field

[0001] This utility model relates to the field of building materials technology, specifically to a fireproof waterstop and a building expansion joint. Background Technology

[0002] In modern architecture, expansion joints within buildings allow structures to expand, contract, or move freely in response to temperature changes, settlement, or earthquakes, thus preventing structural damage. However, these expansion joints also present challenges in terms of waterproofing and fireproofing. Traditional methods require the separate installation of waterstops and fireproof strips, with each component installed sequentially. This complex installation process increases costs and time, and can lead to installation errors or inaccuracies. Furthermore, when waterstops and fireproof strips exist as two independent components, their connection points can become weak points for leakage or fire spread, resulting in poor sealing and inadequate deformation performance, thereby reducing waterproofing and fireproofing effectiveness. Improvements are urgently needed. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings and deficiencies of existing technologies by providing a fireproof waterstop and building expansion joint that does not require separate installation, has good sealing and deformability, and improves waterproof and fireproof effects.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a fireproof and water-stopping strip, comprising: an outer shell made of elastic composite material, an aerogel felt bonded to the inner side of the outer shell, and a polyurethane foam bonded to one side of the outer shell and / or the aerogel felt.

[0005] In a further embodiment of this invention, the polyurethane foam is bonded to the side of the aerogel felt away from the outer shell.

[0006] The present invention is further provided that both the outer shell and the aerogel felt are U-shaped; the polyurethane foam is bullet-shaped.

[0007] The present invention further comprises that the thickness of the outer shell is 1mm-3mm; the thickness of the aerogel felt is 6mm-8mm; and the thickness of the polyurethane foam is 20mm-24mm.

[0008] The present invention further comprises: a first foam body bonded to the side of the aerogel felt body away from the outer shell, and a second foam body bonded to the side of the outer shell body away from the aerogel felt body.

[0009] In a further embodiment of this invention, both the outer shell and the aerogel felt are M-shaped.

[0010] The present invention further comprises that the thickness of the outer shell is 1mm-3mm; the thickness of the aerogel felt is 6mm-8mm; the thickness of the first foam is 36mm-44mm; and the thickness of the second foam is 22mm-28mm.

[0011] The present invention further provides that the height of the outer shell is lower than the height of the aerogel felt and the polyurethane foam.

[0012] To achieve the above objectives, another technical solution adopted by this utility model is: a building expansion joint, comprising: an expansion joint, an extruded polystyrene board disposed within the expansion joint, the two wings of which are bonded to both sides of the expansion joint opening and are embedded in the expansion joint near the side of the extruded polystyrene board, a fireproof and water-stop strip as described above, and an adhesive bonded between the outer side of the fireproof and water-stop strip and the inner sidewall of the expansion joint.

[0013] The present invention further includes, in addition to, a building expansion joint: a building body, a steel plate for closing the opening of the expansion joint, and bolts for fixing the steel plate.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0015] 1. In this utility model, an outer shell, an aerogel felt, and a polyurethane foam are sequentially bonded together from the outside to the inside. The outer shell serves a waterproof function, while the elastic composite material outer shell can withstand certain tensile and compressive forces, adapting to the deformation requirements of the expansion joint under conditions such as temperature changes or earthquakes. The aerogel felt has extremely low thermal conductivity, which can effectively prevent heat transfer, thus acting as a fire barrier. Furthermore, the aerogel felt itself is a non-combustible material, effectively preventing the spread of fire and further improving the fireproof effect. The polyurethane foam has its own shape recovery ability, which is used to maintain the correct shape of the fireproof waterstop, creating convenient conditions for construction. Therefore, the combination of the three components results in a small amount of deformation of the fireproof waterstop when the expansion joint deforms due to external factors. This makes the fireproof waterstop suitable for expansion joints with narrow widths, achieving not only fireproof and waterproof performance, but also good structural stability, sealing, and the ability to adapt to deformation, and it can also be quickly constructed and installed.

[0016] 2. In this utility model, by bonding the aerogel felt body to the inner side of the outer shell and the polyurethane foam bodies respectively disposed on the inner side of the aerogel felt body and the outer side of the outer shell, this bonding combination method allows the fireproof waterstop to have a relatively large amount of deformation when the expansion joint deforms due to external factors. It is suitable for expansion joints with a large width and will not be excessively stretched, thus reducing the fireproof and waterproof effect. Therefore, in addition to having strong fireproof and waterproof performance, the fireproof waterstop also has the advantages of being more flexible and adaptable to deformation. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a structural schematic diagram of the fireproof and water-stop strip in Example 1;

[0019] Figure 2 This is a schematic diagram of the structure in which the fireproof and water-stop strip of Embodiment 1 is installed in the expansion joint;

[0020] Figure 3 This is a structural schematic diagram of the fireproof and water-stop strip in Example 2;

[0021] Figure 4 This is a schematic diagram of the structure in which the fireproof and water-stopping strip of Embodiment 2 is installed in the expansion joint.

[0022] Explanation of reference numerals in the attached drawings: 1. Outer shell; 2. Aerogel felt; 3. Polyurethane foam; 31. First foam; 32. Second foam; 4. Expansion joint; 5. Extruded polystyrene board; 6. Adhesive; 7. Building structure; 8. Steel plate; 9. Bolt. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings.

[0024] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive element, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0025] Example 1

[0026] This embodiment relates to a fireproof and water-stopping strip, referring to... Figures 1-2The system comprises: an outer shell 1, an aerogel felt 2, and a polyurethane foam 3. The outer shell 1 is made of an elastic composite material and serves as the outermost protective barrier, firmly bonded to the inner concrete wall of the expansion joint 4. This ensures the reliability of the expansion joint 4's waterproofing and allows it to withstand certain tensile and compressive forces, adapting to the deformation requirements of the expansion joint 4 under conditions such as temperature changes or earthquakes. The aerogel felt 2 is bonded to the inner side of the outer shell 1 and has extremely low thermal conductivity, making it a highly effective heat insulation material. Its lower part is firmly bonded to the inner concrete wall of the expansion joint 4. In the event of a fire, the fireproof waterstop completely isolates the spaces on both sides of the expansion joint 4, effectively preventing heat transfer. The polyurethane foam 3 is bonded to the inner side of the aerogel felt 2, specifically filling the inner side of the aerogel felt 2. It maintains the shape of the fireproof waterstop, providing convenient conditions for construction. The aerogel felt 2 and the polyurethane foam 3 are bonded together using an acrylic instant adhesive. Simply apply the acrylic instant adhesive to the inner surface of the aerogel felt 2, then place the polyurethane foam 3 inside, and the bonding is completed by pressing. The polyurethane foam 3 automatically restricts movement of the bonded fireproof and water-stop strip that would be detrimental to the bonding quality, providing convenient conditions for construction. Therefore, by bonding the three layers of materials sequentially from the outside to the inside, combining the excellent thermal insulation performance of the aerogel felt 2 and the ability of the polyurethane foam 3 to maintain its correct shape, the two wings of the firestop outer shell 1 are bonded to both sides of the inner wall of the expansion joint 4. After the fireproof waterstop is inserted into the expansion joint 4, it is compressed, and the outer shell 1 presses against the inner wall of the expansion joint 4. In order to apply adhesive between the outer shell 1 and the inner wall, the fireproof waterstop must be pressed, creating a gap between the fireproof waterstop and the inner wall of the expansion joint 4. After applying adhesive to the gap, the polyurethane foam 3 returns to its shape before being compressed, so that the outer shell 1 is tightly pressed against the inner wall of the expansion joint 4 during bonding and remains in place. The adhesive 6 is not disturbed during bonding to ensure good bonding quality. This allows the fireproof waterstop to maintain its fireproof and sealing performance under various conditions. At the same time, the elastic composite material outer shell 1 ensures sufficient flexibility and durability, enabling flexible installation.

[0027] In this embodiment, refer to Figure 1Both the shell and the aerogel felt 2 are U-shaped, while the polyurethane foam 3 is bullet-shaped. The polyurethane foam 3 fills and adheres to the inner side of the aerogel felt 2, increasing the overall structural stability and preventing displacement that could affect the bonding quality during construction. The U-shaped fireproof waterstop is placed upside down into the narrow expansion joint 4. Its simple structure makes it suitable for confined construction spaces and easier to install. Specifically, in this embodiment, the U-shaped fireproof waterstop is applied to an expansion joint 4 with a width of 30mm. In other embodiments, the width of the U-shaped fireproof waterstop applied to the expansion joint 4 can also be 20mm, 24mm, 28mm, etc., as long as the width of the expansion joint 4 is within the range of 20mm-30mm; no specific limitation is made here.

[0028] In this embodiment, the outer shell 1 has a thickness of 2mm and a width of 40mm. In other embodiments, the thickness of the outer shell 1 can also be 1mm, 1.5mm, 2.5mm, 3mm, etc., as long as the thickness of the outer shell 1 is within the range of 1mm-3mm, and no specific limitation is made here. Specifically, in this embodiment, the aerogel felt 2 has a thickness of 7mm and a width of 36mm, providing sufficient heat insulation. In other embodiments, the thickness of the aerogel felt 2 can also be 6mm, 6.5mm, 7.5mm, 8mm, etc., as long as the thickness of the aerogel felt 2 is within the range of 6mm-8mm, and no specific limitation is made here. Specifically, in this embodiment, the polyurethane foam 3 has a thickness of 22mm, which not only enhances the cushioning performance but also allows the fireproof waterstop to maintain its correct shape. In other embodiments, the thickness of the outer shell 1 can also be 20mm, 21mm, 23mm, 24mm, etc., as long as the thickness of the outer shell 1 is within the range of 20mm-24mm, and no specific limitation is made here. It should be noted that the selection of the width of each layer should vary depending on the specific thickness setting, and no specific limitation is made here. Through the optimal selection of the thickness and width of each layer, this fireproof waterstop is suitable for expansion joint 4 with a width of 30mm, achieving the best installation selection and fireproof waterstop effect.

[0029] In this embodiment, Figure 1 and Figure 3 The height of the outer shell 1 is lower than the height of the aerogel felt 2 and the polyurethane foam 3. Because the heights of the aerogel felt 2 and the polyurethane foam 3 are higher than the outer shell 1, the outer shell 1 and the aerogel felt 2 can be directly bonded to the inner wall of the expansion joint 4 during installation. This ensures that the fireproof waterstop can effectively isolate both sides of the expansion joint 4 and remains fixed in the designated position, thus guaranteeing the fireproof and waterproof reliability of the fireproof waterstop.

[0030] This embodiment also relates to a building expansion joint, as shown in the following figure. Figure 2 and Figure 4 The system comprises: an expansion joint 4, an extruded polystyrene (XPS) board 5, a fireproof waterstop, and an adhesive 6. The XPS board 5 is installed within the expansion joint 4, acting as a formwork to maintain the shape of the expansion joint 4 during construction. The two wings of the fireproof waterstop are bonded to both sides of the opening of the expansion joint 4 and are inserted into the expansion joint 4 near the XPS board 5. As described above, the fireproof waterstop combines an elastic composite material outer shell 1, an aerogel felt body 2, and a polyurethane foam body 3, providing excellent fire and water resistance. The adhesive 6 is bonded between the outer side of the fireproof waterstop and the inner wall of the expansion joint 4. The adhesive 6 ensures that the fireproof waterstop is firmly bonded within the expansion joint 4 and forms a tight seal with the inner wall, preventing external water from seeping into the basement. It also possesses a certain degree of elasticity and extensibility, allowing it to adapt to the displacement of the expansion joint 4 to some extent without losing its adhesive effect. The specific installation steps are as follows: Place the fireproof waterstop into the expansion joint 4, flatten the waterstop with a pry bar, then apply adhesive 6 to the inner wall of the expansion joint 4. After removing the pry bar, the waterstop rebounds and presses against the inner wall of the expansion joint 4 as the polyurethane foam 3 automatically returns to its shape, thus bonding with the adhesive 6 and completing the installation of the fireproof waterstop. Specifically, in this embodiment, the adhesive 6 is a modified epoxy resin. In other embodiments, the adhesive 6 can be made of other materials.

[0031] Furthermore, the building expansion joint also includes: a building body 7, a steel plate 8 for closing the opening of the expansion joint 4, and a bolt body 9 for fixing the steel plate 8.

[0032] Example 2

[0033] Reference Figure 3 This embodiment is basically the same as Embodiment 1, except that:

[0034] Both the outer shell 1 and the aerogel felt 2 are M-shaped. The polyurethane foam 3 includes a first foam 31 bonded to the inner side of the aerogel felt 2 and a second foam 32 bonded to the outer side of the outer shell 1. The first foam 31 and the second foam 32 are respectively filled on the upper and lower sides of the M-shaped fireproof waterstop. Due to its inherent characteristics, the M-shaped fireproof waterstop is more suitable for expansion joints 4 with larger widths. The M-shaped fireproof waterstop has a relatively large amount of deformation capacity. When the expansion joint 4 undergoes a large amount of deformation, the waterstop is not stretched, and the bonded parts do not peel off under the action of external water pressure. Therefore, the M-shaped fireproof waterstop can withstand a larger deformation vector of the expansion joint 4, is suitable for large-sized expansion joints, and has a better fireproof and waterstop effect. Specifically, in this embodiment, the M-shaped fireproof waterstop is applied to an expansion joint 4 with a width of 50mm. In other embodiments, the width of the M-shaped fireproof and water-stop strip applied in the expansion joint 4 can also be 40mm, 50mm, 100mm, 150mm, etc., and no specific limitation is made here.

[0035] In this embodiment, the outer shell 1 has a thickness of 2mm and a width of 58mm. The thinner outer shell 1 protects the internal components while maintaining sufficient flexibility, making it easier to adapt to irregular or narrow installation environments. In other embodiments, the thickness of the outer shell 1 can also be 1mm, 1.5mm, 2.5mm, 3mm, etc., as long as the thickness of the outer shell 1 is within the range of 1mm-3mm, and no specific limitation is made here. Specifically, in this embodiment, the aerogel felt 2 has a thickness of 7mm and a width of 54mm. The thickness of the aerogel felt 2 provides sufficient insulation and ensures adequate insulation effect. In other embodiments, the thickness of the aerogel felt 2 can also be 6mm, 6.5mm, 7.5mm, 8mm, etc., as long as the thickness of the aerogel felt 2 is within the range of 6mm-8mm, and no specific limitation is made here. Specifically, in this embodiment, the thickness of the first foam 31 is 40mm, which provides the characteristic of allowing the outer shell 1 to recover its shape and good cushioning. In other embodiments, the thickness of the first foam body 31 can also be 36mm, 37mm, 38mm, 39mm, 41mm, 42mm, 43mm, 44mm, etc., as long as the thickness of the first foam body 31 is within the range of 36mm-44mm, and no specific limitation is made here. Specifically, in this embodiment, the thickness of the second foam body 32 is 26mm, which helps the waterstop to better fit the surfaces on both sides of the expansion joint. In other embodiments, the thickness of the second foam body 32 can also be 22mm, 23mm, 24mm, 25mm, 27mm, 28mm, etc., as long as the thickness of the second foam body 32 is within the range of 22mm-28mm, and no specific limitation is made here. It should be noted that the thickness settings of the first foam body 31 and the second foam body 32 need to be determined according to the width of the fireproof waterstop, and no specific limitation is made here. It should also be noted that the selection of the width of each layer should vary according to the specific thickness setting, and no specific limitation is made here. By precisely setting the thickness and width of each layer of material, the M-type fireproof and water-stop strip in this embodiment is suitable for expansion joint 4 with a width of 50mm. It not only meets the strict fireproof and waterproof requirements, but also takes into account thermal insulation, structural stability and construction convenience. It is suitable for the treatment of expansion joint 4 in various building projects.

[0036] The above is only used to illustrate the technical solution of this utility model and not to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A fire resistant waterstop, characterized in that The application relates to a fireproof waterstop belt, which comprises an outer shell (1) made of elastic composite material, an aerogel felt (2) bonded to the inner side of the outer shell (1), and a polyurethane foam (3) bonded to one side of the outer shell (1) and / or the aerogel felt (2). The polyurethane foam (3) is bonded to the side of the aerogel felt (2) away from the outer shell (1).

2. The fire barrier hose of claim 1, wherein, The outer shell (1) and the aerogel felt (2) are both in U shape, and the polyurethane foam (3) is in bullet shape.

3. The fire barrier hose of claim 2, wherein, The thickness of the outer shell (1) is 1-3 mm, the thickness of the aerogel felt (2) is 6-8 mm, and the thickness of the polyurethane foam (3) is 20-24 mm.

4. The fire barrier hose of claim 2, wherein, The polyurethane foam (3) comprises a first foam (31) bonded to the side of the aerogel felt (2) away from the outer shell (1), and a second foam (32) bonded to the side of the outer shell (1) away from the aerogel felt (2).

5. The fire barrier hose of claim 1, wherein The outer shell (1) and the aerogel felt (2) are both in M shape.

6. The fire barrier hose of claim 5, wherein, The thickness of the outer shell (1) is 1-3 mm, the thickness of the aerogel felt (2) is 6-8 mm, the thickness of the first foam (31) is 36-44 mm, and the thickness of the second foam (32) is 22-28 mm.

7. The fire barrier hose of claim 5, wherein, The height of the outer shell (1) is lower than the height of the aerogel felt (2) and the polyurethane foam (3).

8. The fire barrier hose of any of claims 1-7, wherein, The application relates to a building deformation joint, which comprises a deformation joint (4), an extruded plate (5) arranged in the deformation joint (4), two wings of the extruded plate (5) being bonded to the two sides of the opening of the deformation joint (4) and being arranged in the deformation joint (4) close to the side of the extruded plate (5), a fireproof waterstop belt as claimed in any one of claims 1-8, and an adhesive (6) bonded between the outer side of the fireproof waterstop belt and the inner side wall of the deformation joint (4).

9. A building movement joint, characterised in that The building deformation joint further comprises a building body (7), a steel plate (8) for closing the opening of the deformation joint (4), and a bolt body (9) for fixing the steel plate (8). ​ 10. The building deformation joint defined in claim 9, wherein ​

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