An integrated floating bead silicon crystal refractory air duct

Abstract

The present invention discloses an integrated floating bead silicon crystal fire-resistant air duct, which belongs to the technical field of floating bead silicon crystal fire-resistant air duct; it comprises four angle steels, a floating bead silicon crystal unit, a fireproof tape, an outer protective layer, a sealing press-fit part and a packaging end head, wherein a limiting strip is fixed on an inner surface of the angle steel along the length direction; the four angle steels are arranged into a square structure, and a keel frame is formed by welding connecting plates; the floating bead silicon crystal unit is provided with a plurality of groups, and the floating bead silicon crystal unit is a square frame plate made of a floating bead silicon crystal plate; the floating bead silicon crystal unit is embedded in the keel frame; a card slot which is embedded with the limiting strip is provided on the outside of the square frame plate; the integrated floating bead silicon crystal fire-resistant air duct of the present invention does not need to develop a heat insulation layer of the fire-resistant air duct separately, and can maintain the maximum length between the two packaging end heads according to the length of the color steel plate, and the two packaging end heads and the color steel plate form an integrated result, and no short section transition is required in the middle, and the overall sealing is good.

Description

Technical Field

[0001] The present invention specifically relates to an integrated floating bead silicon crystal refractory air duct, and belongs to the technical field of floating bead silicon crystal refractory air duct. Background Art

[0002] The smoke exhaust system duct is a piping system used for air delivery and distribution. Its function is that when a fire occurs, the fire-resistant duct is used as a carrier, and air is supplied from the outside by the smoke control system (positive pressure air supply) through mechanical pressurization to prevent fire smoke from invading stairwells, antechambers, refuge floors and other spaces and causing suffocation of refugees, or the smoke exhaust system (negative pressure smoke exhaust) discharges the smoke outside the building, and the air supply duct supplements the air volume of the smoke exhaust system. In the process of assembling the air duct system, four dimensions generally need to be considered, namely, the fire resistance and heat insulation capacity, strength and air tightness of the air duct; fire resistance means high melting point, heat insulation means low thermal conductivity, and at the same time, because the strength of the air duct is closely related to the bending strength of the constituent materials, and the air tightness of the air duct is mainly related to the connection method of the pipeline, it is particularly required to ensure its air tightness at the splicing of the pipeline and the connection between the pipelines; the existing fire-resistant air duct, such as the Chinese patent public authorization announcement number: CN221075631U, discloses an integrated floating bead silicon crystal fire-resistant air duct, including an air duct body and a flange, the flange is arranged at both ends of the air duct body, and the flange and the air Hot-melt nails are provided at the joints of the pipe body; the air duct body is provided with an outer layer, a middle layer and an inner layer, the outer layer and the inner layer are both metal protective layers, and the middle layer is a heat-insulating layer; the heat-insulating layer of the fire-resistant air duct of this structure is made of floating bead silica powder and alumina fiber, which inherits the lightweight heat-insulating properties of thermal insulation materials such as rock wool aluminum silicate and has the structural strength of silicon fire-proof panels; however, the heat-insulating layer of this structure requires separate premixing and high-temperature curing equipment, and cannot be made using the existing floating bead silicon crystal panels on the market, and the fire-resistant air duct of this structure and the existing fire-resistant air duct on the market both use a flange short section structure, which requires a large amount of installation work and a large number of short section connection positions, and there is bound to be a risk of deformation and smoke leakage at the connection. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes an integrated floating bead silicon crystal refractory air duct, which does not need to separately develop a heat-insulating layer of the refractory air duct, and can maintain the maximum length between the two packaged end heads according to the length of the color steel plate. The two packaged end heads and the color steel plate form an integrated result, and no short section transition is required in the middle; the installation is easier, and the adaptation length of the floating bead silicon crystal refractory air duct can be quickly adjusted on site according to the site layout requirements.

[0004] The integrated floating bead silicon crystal refractory air duct of the present invention comprises:

[0005] Four angle steels, one inner surface of which has a limit strip fixed along the length direction; the four angle steels are arranged to form a square structure and are welded to form a keel frame through connecting plates;

[0006] Floating bead silicon crystal unit, wherein the floating bead silicon crystal unit is provided with multiple groups, and the floating bead silicon crystal unit is a square frame plate made of floating bead silicon crystal plate; the floating bead silicon crystal unit is embedded in the keel frame; the square frame plate is provided with a slot embedded with a limit strip on the outside;

[0007] Fireproof tape; the fireproof tape is bonded to the outside of the floating bead silicon crystal unit;

[0008] An outer protective layer, wherein the outer protective layer is a square tube formed by welding color steel plates, and the square tube is punched with a straight groove facing the fireproof tape; the keel frame is embedded in the inner side of the square tube, and the angle steel is arranged at the corner of the square tube;

[0009] A sealing press fitting, the sealing press fitting comprising a pressing plate pressed on the outer surface of the fireproof tape, a plurality of nuts fixed at intervals on the outer surface of the straight groove, and a clamping bolt screwed on the nut to tighten against the pressing plate;

[0010] The packaging end head comprises a flange frame plate, one side of the flange frame plate is welded with a pipe section embedded with the end of the outer protective layer, and the inner surface of the pipe section is in contact with the outer surface of the outer protective layer; the inner surface of the flange frame plate is flush with the inner surface of the floating bead silicon crystal unit; the flange frame plate is welded with a limited end head on the inner side of the pipe section; the limited end head is inserted into the inner side of the groove formed by the floating bead silicon crystal unit and the slot, and is in contact with the end of the pressure plate; the clamping bolt is clamped with the limited end head; a fastening bolt is arranged on the inner side of the floating bead silicon crystal unit, the fastening bolt passes through the floating bead silicon crystal unit, the outer protective layer and the pipe section, and is screwed with a fastening nut;

[0011] When making an integrated floating bead silicon crystal fire-resistant air duct, the keel frame, the floating bead silicon crystal unit and the outer protective layer can be made separately; when installing, first fill the floating bead silicon crystal unit into the inner side of the keel frame in sequence, when filling, the corner of the floating bead silicon crystal unit is pressed against the inner corner of the four angle steels, and the card slot of the floating bead silicon crystal unit is movably engaged with the limit strip, after the keel frame and the floating bead silicon crystal unit are assembled, arrange the fireproof tape between the four angle steels, and bond the fireproof tape to the outer surface of the floating bead silicon crystal unit; complete the internal processing of the fire-resistant air duct to obtain an integrated internal pipe group; then, embed the internal pipe group into the outer protective layer, or After the protective layer is formed, the internal pipe group is covered and welded on site. Then the pressure plate is sent into the straight groove, and the clamping bolts are screwed on the outer surface of the straight groove. Finally, the square tube is embedded into the packaging end so that the inner surface of the pipe section fits with the outer surface of the outer protective layer, and the end of the square tube is pressed against the flange frame plate, and the limiting end is inserted into the slot. The limiting end presses the fireproof tape and limits the position of the packaging end at the same time. Then, the fastening bolts are inserted into the through holes through the pre-opened through holes or the through holes opened on site, and tightened with the fastening nuts, so that the packaging end, keel frame, floating bead silicon crystal unit and outer protective layer are assembled into one.

[0012] Furthermore, a rack is provided on the outer surface of the limiting end head; and the clamping bolt is pressed against the rack.

[0013] Furthermore, the fireproof tape includes a flame-retardant rubber plate bonded to the outside of the floating bead silicon crystal unit, and an aluminum foil layer is bonded to the outside of the flame-retardant rubber plate; the flame-retardant rubber plate can be deformed under pressure, and can be tightened to fill between the angle steels and the outer surface of the floating bead silicon crystal unit, thereby ensuring the sealing performance of the air duct formed by the assembly of the keel frame and the floating bead silicon crystal unit.

[0014] Furthermore, the square frame is composed of floating bead silicon crystal panels, and the floating bead silicon crystal panels are provided with 45° angle slopes at the corners of the square frame; the floating bead silicon crystal panels are first completed with 45° angle slopes and slots, and then the square frame is surrounded; before the square frame is surrounded, all processing of the floating bead silicon crystal panels is plane processing, which can greatly reduce the processing difficulty; after processing, the square frame is surrounded, which can not only ensure the processing accuracy, but also facilitate the surrounding assembly of the square frame.

[0015] Furthermore, a welding groove is provided on the angle steel; the connecting plate is embedded in the welding groove and welded as a whole; the thickness of the connecting plate is less than the thickness of the angle steel; the four separated angle steels can be connected as one through the connecting plate, and after the connecting plate and the welding groove are welded, they need to be polished inside and outside to prevent the solder from interfering with the installation of the floating bead silicon crystal unit and the outer protective layer.

[0016] Furthermore, the outer surface of the fireproof tape protrudes from the outer surface of the keel frame by 0.2~0.5mm; during operation, the elasticity of the fireproof tape can be used to press the fireproof tape to be flush with the outer surface of the keel frame through the pressure plate, thereby improving the sealing performance between the keel frame and the floating bead silicon crystal unit.

[0017] Furthermore, inner slope surfaces and outer slope surfaces are respectively provided at both ends of the floating bead silicon crystal unit, and adjacent floating bead silicon crystal units embedded in the keel frame are fitted together through the inner slope surfaces and the outer slope surfaces; the floating bead silicon crystal units in the keel frame are connected as a whole; the floating bead silicon crystal unit close to the end of the keel frame is cut off to form a state flush with the end of the keel frame; during installation, two adjacent floating bead silicon crystal units are pressed together through the inner slope surfaces and the outer slope surfaces respectively. Since the outside of the floating bead silicon crystal unit is restricted by the angle steel and the limit strip, when the floating bead silicon crystal unit at the end is pressed tightly, the adjacent inner slope surfaces and the outer slope surfaces can be tightly fitted, and the contact and matching area between the adjacent floating bead silicon crystal units is increased through the inner slope surfaces and the outer slope surfaces, thereby improving the sealing of the entire flue.

[0018] Furthermore, after the square frame panel is enclosed, the two 45° angle slopes on the open side are fixed by gluing or countersunk bolts and nuts. During installation, high temperature resistant glue is applied to the slopes on both sides of the floating bead silicon crystal panel. Then, the floating bead silicon crystal panel is enclosed as a square frame panel so that the slopes fit precisely. Then, the square frame panel is directly embedded into the keel frame, or a mold consistent with the inner side of the keel frame, and the glue is waited for to solidify. In addition, the two open sides of the square frame panel can be precisely connected through oblique holes and fastened with bolts and nuts.

[0019] Compared with the prior art, the integrated floating bead silicon crystal fire-resistant air duct of the present invention adopts the existing floating bead silicon crystal plate on the market to first groove and process the slope surface, and then surround it to form a floating bead silicon crystal unit, and the plane processing is simple and convenient; multiple floating bead silicon crystal units are sequentially embedded in the keel frame and butted end to end to form an integrated air duct, the construction is simple and convenient, and can be spliced ​​or cut into outer protective layers, keel frames and floating bead silicon crystal units at the ends of corresponding lengths according to the requirements of the site, so that it can be adapted to the site layout, and finally, the end heads are sealed by packaging the end heads to form an integrated floating bead silicon crystal fire-resistant air duct, the flange holes of the flange frame plates of the packaging end heads are adapted to the flanges of the existing floating bead silicon crystal fire-resistant air ducts on the market, so that when the refractory air duct corners are arranged, the bent pipes of the floating bead silicon crystal fire-resistant air ducts on the market can be directly used. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the floating bead silicon crystal plate of the present invention surrounded by a square frame plate.

[0021] Figure 2 It is a schematic diagram of the end docking structure of two floating bead silicon crystal units of the present invention.

[0022] Figure 3 This is a schematic diagram of the structure of assembling the floating bead silicon crystal unit of the present invention to the keel frame.

[0023] Figure 4 This is a schematic diagram of the installation structure of the floating bead silicon crystal unit, keel frame and fireproof tape of the present invention.

[0024] Figure 5 This is a schematic diagram of the installation structure of the floating bead silicon crystal unit, keel frame, fireproof tape and outer protective layer of the present invention.

[0025] Figure 6 For the present invention Figure 5 Schematic diagram of the local enlarged structure at point A in the middle.

[0026] Figure 7 It is a schematic diagram of the butt joint structure of the inner slope surface and the outer slope surface of two floating bead silicon crystal units of the present invention.

[0027] Figure 8 It is a schematic diagram of the flange frame plate and pipe section installation structure of the present invention.

[0028] Fig. 9 It is a schematic diagram of the overall structure of the packaging terminal of the present invention.

[0029] Fig.10 It is a schematic diagram of the overall structure of one end of the integrated floating bead silicon crystal refractory air duct of the present invention.

[0030] Figure numerals: 1. Four angle steels, 2. Limiting strips, 3. Connecting plates, 4. Floating bead silicon crystal units, 5. Card slots, 6. Fireproof tape, 7. Outer protective layer, 8. Straight slots, 9. Pressure plates, 10. Clamping bolts, 11. Flange frame plates, 12. Pipe sections, 13. Limiting ends, 14. Fastening bolts, 15. Racks, 16. Welding grooves, 17. Inner slopes, 18. Outer slopes, 19. 45° angle slopes, 20. Floating bead silicon crystal plates. DETAILED DESCRIPTION

[0031] Example:

[0032] like Figures 1 to 10 The one-piece floating bead silicon crystal fire-resistant air duct shown includes:

[0033] Four angle steels 1, one inner surface of each angle steel 1 being fixed with a limiting strip 2 along the length direction; the four angle steels 1 are arranged to form a square structure and are welded through connecting plates 3 to form a keel frame;

[0034] The floating bead silicon crystal unit 4 is provided with multiple groups, and the floating bead silicon crystal unit 4 is a square frame plate made of a floating bead silicon crystal plate 20; the floating bead silicon crystal unit 4 is embedded in the keel frame; the square frame plate is provided with a card slot 5 embedded with the limit strip 2 on the outside;

[0035] Fireproof tape 6; the fireproof tape 6 is bonded to the outside of the floating bead silicon crystal unit 4;

[0036] The outer protective layer 7 is a square tube formed by welding color steel plates, and the square tube is punched with a straight groove 8 facing the fireproof tape 6; the keel frame is embedded in the inner side of the square tube, and the angle steel 1 is arranged at the corner of the square tube;

[0037] A sealing press fitting, wherein the sealing press fitting comprises a pressing plate 9 pressed on the outer surface of the fireproof tape 6, a plurality of nuts are fixed at intervals on the outer surface of the straight groove 8, and a clamping bolt 10 is screwed on the nut and pressed against the pressing plate 9;

[0038] The packaging end head comprises a flange frame plate 11, one side of which is welded with a pipe section 12 which is embedded with the end of the outer protective layer 7, and the inner surface of the pipe section 12 is in contact with the outer surface of the outer protective layer 7; the inner surface of the flange frame plate 11 is flush with the inner surface of the floating bead silicon crystal unit 4; the flange frame plate 11 is welded with a limiting end head 13 on the inner side of the pipe section 12; the limiting end head 13 is inserted into the inner side of the groove formed by the floating bead silicon crystal unit 4 and the slot 5, and is in contact with the end of the pressure plate 9; the clamping bolt 10 is clamped with the limiting end head 13; a fastening bolt 14 is arranged on the inner side of the floating bead silicon crystal unit 4, the fastening bolt 14 passes through the floating bead silicon crystal unit 4, the outer protective layer 7 and the pipe section 12, and is screwed with a fastening nut.

[0039] When making an integrated floating bead silicon crystal fire-resistant air duct, the keel frame, the floating bead silicon crystal unit 4 and the outer protective layer 7 can be made separately; when installing, first fill the floating bead silicon crystal unit 4 into the inner side of the keel frame in sequence, when filling, the corner of the floating bead silicon crystal unit 4 is pressed against the inner corner of the four angle steels 1, and the card slot 5 of the floating bead silicon crystal unit 4 is movably engaged with the limit strip 2. After the keel frame and the floating bead silicon crystal unit 4 are assembled, the fireproof tape 6 is arranged between the four angle steels 1, and the fireproof tape 6 is bonded to the outer surface of the floating bead silicon crystal unit 4; the internal processing of the fire-resistant air duct is completed to obtain an integrated internal pipe group; then, the internal pipe group is embedded in the outer protective layer 7, or the outer protective layer 7 is embedded in the outer protective layer 7. After the forming is completed, the internal tube group is wrapped and welded on site, and then the pressure plate 9 is sent into the straight groove 8, and the clamping bolt 10 is screwed on the outer surface of the straight groove 8; finally, the square tube is embedded into the packaging end, so that the inner surface of the pipe section 12 fits with the outer surface of the outer protective layer 7, and the end of the square tube is pressed against the flange frame plate 11, and the limiting end 13 is inserted into the slot 5, and the limiting end 13 presses the fireproof tape 6, and at the same time limits the position of the packaging end, and then the fastening bolt 14 is inserted into the through hole through the pre-opened through hole or the through hole opened on site, and fastened by the fastening nut, so that the packaging end, the keel frame, the floating bead silicon crystal unit 4 and the outer protective layer 7 are assembled into one.

[0040] A rack 15 is formed on the outer surface of the limiting end 13 ; the clamping bolt 10 is pressed against the rack 15 .

[0041] The fireproof tape 6 includes a flame-retardant rubber plate bonded to the outside of the floating bead silicon crystal unit 4, and an aluminum foil layer is bonded to the outside of the flame-retardant rubber plate; the flame-retardant rubber plate can be deformed under pressure and can be tightened to fill between the angle steels 1 and the outer surface of the floating bead silicon crystal unit 4, thereby ensuring the sealing performance of the air duct formed by the assembly of the keel frame and the floating bead silicon crystal unit 4.

[0042] The square frame is composed of a floating bead silicon crystal plate 20, and the floating bead silicon crystal plate 20 is provided with a 45° angle slope 19 at the corner of the square frame; the floating bead silicon crystal plate 20 first completes the 45° angle slope 19 and the slot 5, and then the square frame is surrounded; before the square frame is surrounded, all processing of the floating bead silicon crystal plate 20 is plane processing, which can greatly reduce the processing difficulty; after processing, the square frame is surrounded, which can not only ensure the processing accuracy, but also facilitate the surrounding assembly of the square frame.

[0043] A welding groove 16 is provided on the angle steel 1; the connecting plate 3 is embedded in the welding groove 16 and welded as a whole; the thickness of the connecting plate 3 is less than the thickness of the angle steel 1; the four separated angle steels 1 can be connected as a whole through the connecting plate 3. After the connecting plate 3 and the welding groove 16 are welded, they need to be polished inside and outside to prevent the solder from interfering with the installation of the floating bead silicon crystal unit 4 and the outer protective layer 7.

[0044] The outer surface of the fireproof tape 6 protrudes from the outer surface of the keel frame by 0.2~0.5mm; during operation, the elasticity of the fireproof tape can be used to press the fireproof tape to be flush with the outer surface of the keel frame through the pressing plate 9, thereby improving the sealing performance between the keel frame and the floating bead silicon crystal unit 4.

[0045] The two ends of the floating bead silicon crystal unit 4 are respectively provided with an inner slope surface 17 and an outer slope surface 18, and the adjacent floating bead silicon crystal units 4 embedded in the keel frame are fitted together through the inner slope surface 17 and the outer slope surface 18; the floating bead silicon crystal units 4 in the keel frame are connected as a whole; the floating bead silicon crystal unit 4 close to the end of the keel frame is cut off to form a state flush with the end of the keel frame; during installation, two adjacent floating bead silicon crystal units 4 are pressed together through the inner slope surface 17 and the outer slope surface 18 respectively. Since the outside of the floating bead silicon crystal unit 4 is restricted by the angle steel 1 and the limit strip 2, when the floating bead silicon crystal unit 4 at the end is pressed tightly, the adjacent inner slope surface 17 and the outer slope surface 18 can be tightly fitted, and the contact and matching area between the adjacent floating bead silicon crystal units 4 is increased by the inner slope surface 17 and the outer slope surface 18, thereby improving the sealing of the entire flue.

[0046] After the square frame panel is enclosed, the two 45° angle slopes 19 on the open side are fixed by gluing or countersunk bolts and nuts. During installation, high temperature resistant glue is applied to the slopes on both sides of the floating bead silicon crystal board 20. Then, the floating bead silicon crystal board 20 is enclosed as a square frame panel so that the slopes fit precisely. Then, the square frame panel is directly embedded into the keel frame, or a mold consistent with the inner side of the keel frame, and the glue is waited for to solidify. In addition, the two open sides of the square frame panel can be precisely connected through oblique holes and fastened with bolts and nuts.

[0047] The above embodiments are only preferred implementations of the present invention, so any equivalent changes or modifications made according to the structures, features and principles described in the scope of application of the present invention are included in the scope of application of the present invention.

Claims

1. An integrated floating bead silicon crystal refractory air duct, characterized in that: include Four angle steels, one inner surface of which has a limit strip fixed along the length direction; the four angle steels are arranged to form a square structure and are welded to form a keel frame through connecting plates; Floating bead silicon crystal unit, wherein the floating bead silicon crystal unit is provided with multiple groups, and the floating bead silicon crystal unit is a square frame plate made of floating bead silicon crystal plate; the floating bead silicon crystal unit is embedded in the keel frame; the square frame plate is provided with a slot embedded with a limit strip on the outside; Fireproof tape; the fireproof tape is bonded to the outside of the floating bead silicon crystal unit; An outer protective layer, wherein the outer protective layer is a square tube formed by welding color steel plates, and the square tube is punched with a straight groove facing the fireproof tape; the keel frame is embedded in the inner side of the square tube, and the angle steel is arranged at the corner of the square tube; A sealing press fitting, wherein the sealing press fitting comprises a pressing plate pressed on the outer surface of the fireproof tape, a plurality of nuts are fixed at intervals on the outer surface of the straight groove, and a tightening bolt which is tightened against the pressing plate is screwed on the nut, and the fireproof tape can be deformed under pressure and can be tightened to fill between the angle steels and the outer surface of the floating bead silicon crystal unit, thereby ensuring the sealing performance of the air duct formed by the assembly of the keel frame and the floating bead silicon crystal unit; The packaging end head comprises a flange frame plate, one side of the flange frame plate is welded with a pipe section which is embedded with the end of the outer protective layer, and the inner surface of the pipe section is in contact with the outer surface of the outer protective layer; the inner surface of the flange frame plate is flush with the inner surface of the floating bead silicon crystal unit; the flange frame plate is welded with a limiting end head on the inner side of the pipe section; the limiting end head is inserted into the inner side of the groove formed by the floating bead silicon crystal unit and the straight groove, and is in contact with the end of the pressure plate; the clamping bolt is clamped with the limiting end head; a fastening bolt is arranged on the inner side of the floating bead silicon crystal unit, the fastening bolt passes through the floating bead silicon crystal unit, the outer protective layer and the pipe section, and is screwed with a fastening nut.

2. The integrated floating bead silicon crystal refractory air duct according to claim 1 is characterized in that: A rack is provided on the outer surface of the limiting end head; the clamping bolt is pressed against the rack.

3. The integrated floating bead silicon crystal refractory air duct according to claim 1 is characterized in that: The fireproof tape comprises a flame retardant rubber plate bonded to the outside of the floating bead silicon crystal unit, and an aluminum foil layer is bonded to the outside of the flame retardant rubber plate.

4. The integrated floating bead silicon crystal refractory air duct according to claim 1 is characterized in that: The square frame is composed of floating bead silicon crystal panels, which have 45° slopes at the corners of the square frame. The floating bead silicon crystal panels are firstly provided with 45° slopes and slots, and then the square frame is surrounded.

5. The integrated floating bead silicon crystal refractory air duct according to claim 1 is characterized in that: The angle steel is provided with a welding groove; the connecting plate is embedded in the welding groove and welded as one piece; and the thickness of the connecting plate is smaller than the thickness of the angle steel.

6. The integrated floating bead silicon crystal refractory air duct according to claim 1 is characterized in that: The outer surface of the fireproof tape protrudes from the outer surface of the keel frame by 0.2-0.5 mm.

7. The integrated floating bead silicon crystal refractory air duct according to claim 1 is characterized in that: The two ends of the floating bead silicon crystal unit are respectively provided with an inner slope surface and an outer slope surface, and the adjacent floating bead silicon crystal units embedded in the keel frame are fitted together through the inner slope surface and the outer slope surface; the floating bead silicon crystal units in the keel frame are connected into one; the floating bead silicon crystal unit close to the end of the keel frame is cut off to form a state flush with the end of the keel frame.

8. The integrated floating bead silicon crystal refractory air duct according to claim 1 is characterized in that: After the square frame plate is enclosed, the two 45° angle slopes on the open side are fixed by gluing or countersunk bolts and nuts.

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