Floating bead fire-resistant heat insulation plate smoke prevention and exhaust air pipe with high breaking strength

Abstract

The utility model relates to the technical field of smoke prevention and exhaust air pipes, in particular to a floating bead fire-resistant heat-insulating plate smoke prevention and exhaust air pipe with high breaking strength, which comprises a smoke prevention and exhaust air pipe and fixing flanges arranged at two ends of the smoke prevention and exhaust air pipe, the smoke prevention and exhaust air pipe is a hollow cuboid pipeline and comprises four floating bead fire-resistant heat-insulating plates, and the floating bead fire-resistant heat-insulating plates are arranged at two ends of the smoke prevention and exhaust air pipe. Four right-angle components are arranged between the two fixed flanges, each right-angle component comprises an upper right-angle inserting strip component and a lower right-angle inserting strip component, and a first inserting groove and a second inserting groove for inserting two adjacent floating bead fireproof heat insulation plates are formed between each upper right-angle inserting strip component and the corresponding lower right-angle inserting strip component; through combination of the right-angle components, the floating bead fire-resistant heat insulation plates and the reinforcing frame body, the function of the smoke prevention and exhaust air pipe is achieved, the four floating bead fire-resistant heat insulation plates can be stably fixed through the right-angle components and the reinforcing frame body, and the breaking strength of the smoke prevention and exhaust air pipe can be effectively improved; meanwhile, through mechanisms such as the right-angle component and the fixed flange, rapid assembly can be achieved, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of smoke exhaust duct technology, specifically to a smoke exhaust duct with high flexural strength and beaded fire-resistant insulation board. Background Technology

[0002] Fire safety is paramount in modern buildings. As a key component of building fire protection systems, smoke extraction ducts primarily function to promptly remove smoke and toxic gases from indoor spaces during a fire, while simultaneously providing fresh air for evacuation and firefighting operations, thereby effectively protecting lives and minimizing property damage. The performance of smoke extraction ducts directly impacts the effectiveness of the entire fire protection system.

[0003] While cenosphere refractory insulation boards have demonstrated excellent fire resistance and insulation advantages in smoke exhaust ducts, they suffer from significant deficiencies in flexural strength. During use, they may be subjected to external forces such as wind and vibration, requiring the boards to possess a certain level of flexural strength. However, due to limitations in their raw material composition and manufacturing process, traditional cenosphere refractory insulation boards exhibit uneven fiber distribution and weak interparticle bonding within their internal structure. This makes the boards prone to breakage or cracking under bending stress, severely impacting the service life and safety of the ductwork. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by providing a cenosphere-reinforced fire-resistant insulation board smoke exhaust duct that can be quickly assembled on-site and has high flexural strength.

[0005] To achieve the above technical objectives, this utility model proposes the following technical solution: a flue gas duct with high flexural strength made of cenosphere refractory insulation board, comprising a flue gas duct and fixed flanges at both ends of the flue gas duct. The flue gas duct is a hollow cuboid pipe, comprising four cenosphere refractory insulation boards. Four parallel right-angle members are provided between the two fixed flanges. The right-angle members include an upper right-angle insert member and a lower right-angle insert member. The upper right-angle insert member and the lower right-angle insert member form a first slot and a second slot for inserting two adjacent cenosphere refractory insulation boards. The first slot and the second slot are arranged vertically.

[0006] Furthermore, a support frame is fixed to one side of the fixed flange, and the support frame is connected to the right-angle member by a first rivet.

[0007] Furthermore, an inclined plate is provided between the first slot and the second slot, and both sides of the beaded refractory insulation board are provided with beveled angles parallel to the adjacent inclined plate.

[0008] Furthermore, multiple reinforcing frames are equidistantly fitted onto the four right-angled members.

[0009] Furthermore, the fixed flange has grooves at each of its four inner corners that are adapted to the upper right-angle insert component.

[0010] Furthermore, the beaded refractory insulation board is inserted into the corresponding first or second slot and connected to the reinforcing frame by a second rivet.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model realizes the function of smoke exhaust duct by combining right-angle components, refractory insulation boards with cenospheres, and a reinforcing frame. The right-angle components and the reinforcing frame can stably fix the four cenosphere insulation boards, which can effectively improve the bending strength of the smoke exhaust duct. At the same time, through the right-angle components and fixing flanges, etc., rapid assembly can be achieved, shortening the installation cycle and improving work efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the installation structure of the right-angle component and the fixed flange of this utility model;

[0014] Figure 3 This is the utility model Figure 1 Schematic diagram of the front structure;

[0015] Figure 4 This is a utility model Figure 3 Enlarged view of the structure at point A in the middle;

[0016] Figure 5 This is a front view structural diagram of the right-angle component of this utility model;

[0017] Figure 6 This is a structural schematic diagram of the fixed flange of this utility model.

[0018] In the diagram, 1 is the exhaust duct; 2 is the fixed flange; 3 is the beaded fire-resistant insulation board; 4 is the support frame; 5 is the right-angle component; 51 is the upper right-angle insert component; 52 is the lower right-angle insert component; 53 is the first slot; 54 is the second slot; 55 is the inclined plate; 6 is the first rivet; 7 is the beveled angle; 8 is the reinforcing frame; 9 is the groove; and 10 is the second rivet. Detailed Implementation

[0019] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] like Figure 1-6As shown, this utility model provides a smoke exhaust duct with high flexural strength made of cenosphere refractory insulation board, including a smoke exhaust duct 1 and fixed flanges 2 set at both ends of the smoke exhaust duct 1. A support frame 4 is fixed to one side of the fixed flange 2. The smoke exhaust duct 1 is a hollow cuboid pipe. The smoke exhaust duct 1 includes four cenosphere refractory insulation boards 3. Four parallel right-angle members 5 are fixed between the two support frames 4 by a first rivet 6. The right-angle members 5 include an upper right-angle insert member 51 and a lower right-angle insert member 52. A first slot 53 and a second slot 54 are formed between the upper right-angle insert member 51 and the lower right-angle insert member 52 to insert two adjacent cenosphere refractory insulation boards 3. The first slot 53 and the second slot 54 are set vertically.

[0021] like Figure 1 , Figure 2 as well as Figure 5 As shown, the flexural strength of the cenosphere refractory insulation board 3 is improved by optimizing its manufacturing process. Firstly, the raw material ratio and mixing process are optimized: 1-3 parts of chopped aluminate fiber are added during the manufacturing process of the cenosphere refractory insulation board 3. The fiber bridging effect enhances the internal crack resistance of the board while maintaining low density. Simultaneously, the ratio of cenospheres to aluminate cement is optimized: 30-60 parts cenospheres and 40-70 parts aluminate cement, supplemented with 8-30 parts calcium oxide to enhance the hydration reaction and improve the overall density of the material. Secondly, the molding process is improved: a segmented pressure molding method is adopted, using a large-tonnage press to perform pre-pressing, main pressing, and holding pressure three-stage pressurization of the slurry, removing air bubbles and increasing the density of the blank, thus enhancing the internal structural stability of the board. A detachable metal... The frame mold is designed with guide channels to match the slurry flow direction, reducing edge stress concentration and improving the edge strength of the formed board; 3. Strengthening the drying and post-processing: staged heating drying 50℃→80℃→90℃ with extended constant temperature time to avoid internal stress cracks caused by rapid water loss and maintain the overall strength of the board. At the same time, 1-3 parts of silica gel or inorganic resin coating are sprayed on the board surface to enhance surface density and prevent edge damage during transportation and installation; 4. Controlling structural design and production precision: through magnetic field or vibration-assisted processes, short fibers are oriented along the direction of force to improve the longitudinal flexural strength of the board. Laser positioning and cutting technology is used to ensure the dimensional accuracy of the board and reduce local stress concentration caused by dimensional deviations during splicing.

[0022] In terms of structure, the four right-angle members 5 can increase the bending resistance of the smoke exhaust duct 1. During installation, the four right-angle members 5 are first fixed to the support frame 4 with the first rivet 6, and then the four floating fire-resistant insulation boards 3 are inserted into the first insert 6 and the second slot 54 of the right-angle members 5 in sequence. The assembly is convenient and quick. When not assembled, the independent fixed flange 2, right-angle members 5 and floating fire-resistant insulation boards 3 and other loose parts occupy less area when transporting the same number of smoke exhaust ducts. At the same time, the protection of the floating fire-resistant insulation boards 3 is also easier to carry out during transportation.

[0023] An inclined plate 55 is fixedly provided between the first slot 53 and the second slot 54, and both sides of the float refractory heat insulation board 3 are provided with oblique cut angles 7 parallel to the adjacent inclined plate 8.

[0024] like Figure 3 and Figure 4 As shown, the installation sealing can be improved by setting the inclined plate 55 and the bevel angle 7. In this embodiment, after installation, sealant is applied to the contact areas between the fly ash refractory insulation board 3 and the inclined plate 55, the first slot 53 and the second slot 54.

[0025] Multiple reinforcing frames 8 are equidistantly fitted onto the four right-angled members 5.

[0026] like Figure 2 As shown, the reinforced frame 8 further improves the bending resistance of the smoke exhaust duct 1.

[0027] The fixed flange 2 has grooves 9 at each of its four inner corners that are adapted to the upper right-angle insert component 51.

[0028] like Figure 6 As shown, a groove 9 is provided in the center hole of the fixed flange 2 to accommodate the upper right-angle insert component 51. After installation, the gap between the float fireproof insulation board 3 and the inner wall of the fixed flange 2 is reduced, thereby improving the sealing performance.

[0029] The beaded refractory insulation board 3 is inserted into the corresponding first slot 53 or second slot 54 and connected to the reinforcing frame 8 by the second rivet 10.

[0030] like Figure 1 As shown in Figure 2, the float-type fire-resistant insulation board 3 is secured within the first slot 53 or the second slot 54 by rivets 10. Simultaneously, the reinforcing frame 8 is fixed to the upper right-angle insert member 51, facilitating both installation and disassembly.

[0031] Operating principle: The cenosphere refractory insulation board 3, right-angle components 5, and fixing flanges 2 are transported to the designated area and then assembled. During assembly, the four right-angle components 5 are first inserted into the four corners of the center hole of the fixing flange 2, so that the end of the right-angle component 5 is on the same plane as the end of a fixing flange 2. Then, it is fixed to the support frame 4 with steel rivets. Then, multiple reinforcing frames 8 are sequentially fitted onto the four right-angle components 5. Subsequently, another fixing flange 2 is installed on the other end of the right-angle component 5. Then, the cenosphere refractory insulation board 3 is fixed inside the right-angle component 5 with the second rivet 10, and at the same time, the reinforcing frame 8 is fixed onto the right-angle component 5, completing the assembly of the unit smoke exhaust duct 1. Under the action of the fixing flange 2, the smoke exhaust ducts 1 of multiple units are installed together to complete the overall installation.

[0032] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A flue gas duct with high flexural strength made of cenosphere-reinforced fire-resistant insulation board, characterized in that: It includes a smoke exhaust duct (1) and fixed flanges (2) set at both ends of the smoke exhaust duct (1). The smoke exhaust duct (1) is a hollow cuboid pipe. The smoke exhaust duct (1) includes four refractory insulation boards (3). Four parallel right-angle members (5) are provided between the two fixed flanges (2). The right-angle members (5) include an upper right-angle insert member (51) and a lower right-angle insert member (52). The upper right-angle insert member (51) and the lower right-angle insert member (52) form a first slot (53) and a second slot (54) for inserting two adjacent refractory insulation boards (3). The first slot (53) and the second slot (54) are set vertically.

2. The high flexural strength perlite refractory insulation board smoke exhaust duct according to claim 1, characterized in that: A support frame (4) is fixed to one side of the fixed flange (2), and the support frame (4) is connected to the right-angle member (5) by a first rivet (6).

3. The high flexural strength perlite refractory insulation board smoke exhaust duct according to claim 1, characterized in that: An inclined plate (55) is provided between the first slot (53) and the second slot (54), and both sides of the beaded refractory insulation board (3) are provided with oblique angles (7) parallel to the adjacent inclined plate (55).

4. The high flexural strength perlite refractory insulation board smoke exhaust duct according to claim 1, characterized in that: Multiple reinforcing frames (8) are equidistantly fitted onto the four right-angled members (5).

5. A high-flexural-strength, perlite-insulated, fire-resistant, heat-insulating smoke exhaust duct, as described in claim 1, is characterized in that: The fixed flange (2) has grooves (9) at each of its four inner corners that are adapted to the upper right-angle insert component (51).

6. A high-flexural-strength, perlite-insulated, fire-resistant, heat-insulating smoke exhaust duct, as described in claim 1, is characterized in that: The refractory insulation board (3) is inserted into the corresponding first slot (53) or second slot (54) and connected to the reinforcing frame (8) by the second rivet (10).

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