Installation structure of air pipe fireproof plate

Abstract

The utility model relates to a mounting structure of an air pipe fireproof plate, which comprises an air pipe, a U-shaped light steel keel, clamping type keels, a fireproof plate, an air pipe support, a heat insulation material and an angle steel fastener, the air pipe is fixed through the air pipe support, the clamping type keels are arranged on each outer surface of the air pipe at intervals, the clamping type keels are straight-strip-shaped, the clamping type keels are arranged perpendicular to the length direction of the air pipe, and the fireproof plate is arranged on the U-shaped light steel keel. The clamping type keel is fixed to the air pipe through a self-tapping screw, and clamping openings are formed in the clamping type keel at intervals. U-shaped light steel keels are arranged on each outer surface of the air pipe at intervals, the length direction of the U-shaped light steel keels is consistent with the length direction of the air pipe, and the U-shaped light steel keels are buckled at bayonets of the clamping type keels; a fireproof plate is arranged on each outer surface of the air pipe, the fireproof plates are fixed to the U-shaped light steel keel through self-tapping screws, angle steel fasteners are arranged at the right-angle connecting positions of the fireproof plates on the adjacent faces of the air pipe, the angle steel fasteners are fixed to the edge seams of the fireproof plates through the self-tapping screws, and gaps between the air pipe and the fireproof plates are filled with heat insulation materials.

Description

Technical Field

[0001] The utility model relates to the field of ventilation ducts of smoke prevention and exhaust systems, and particularly relates to an installation structure of a duct fireproof board. Background Technique

[0002] With the acceleration of the urbanization process and the increase in high-rise buildings, fire safety has become an important issue that cannot be ignored in building design. As a key facility for ensuring the evacuation of personnel and fire fighting and rescue during a fire, the fire prevention performance of the smoke prevention and exhaust system is directly related to the safety level of the building.

[0003] As a smoke exhaust duct, the thickness of the duct is relatively thin in the prior art and is prone to deformation at high temperatures, which will affect the gas discharge. Therefore, it is usually necessary to cover a layer of fireproof board on the outside of the duct to protect the smoke exhaust duct. As a fireproof material specifically used for ventilation or smoke exhaust ducts in building engineering, the traditional installation method is to first install U-shaped light steel keels on the duct to form a fixed frame, and then fix the fireproof board on the fixed frame formed by the U-shaped light steel keels with self-tapping screws. However, due to the poor anti-deformation ability of the U-shaped light steel keels, it is easy to deform simply using the U-shaped light steel keels as the fixed frame, resulting in a gap between the fireproof board and the duct, affecting the fireproof effect. Content of the Utility Model

[0004] The utility model discloses an installation structure of a duct fireproof board, which has a simple structure, is convenient to install, and can improve the stability and fireproof effect of the structure.

[0005] In order to achieve the above object, the technical solution adopted by the utility model is as follows:

[0006] An installation structure of a duct fireproof board includes a duct, U-shaped light steel keels, cassette keels, a fireproof board, duct supports, heat insulation materials, and angle steel fasteners. The duct is fixed through duct supports. Cassette keels are arranged at intervals on each outer surface of the duct. The cassette keels are straight bars and are arranged perpendicular to the length direction of the duct. The cassette keels are fixed on the duct with self-tapping screws, and bayonets are arranged at intervals on the cassette keels; U-shaped light steel keels are arranged at intervals on each outer surface of the duct. The length direction of the U-shaped light steel keels is the same as the length direction of the duct. The U-shaped light steel keels are buckled at the bayonets of the cassette keels; a fireproof board is provided on each outer surface of the duct. The fireproof board is fixed on the U-shaped light steel keels with self-tapping screws. Angle steel fasteners are arranged at the right-angle joints of the fireproof boards on adjacent surfaces of the duct. The angle steel fasteners are fixed at the side seams of the fireproof board with self-tapping screws. Heat insulation materials are filled in the gaps between the duct and the fireproof board.

[0007] Further, the spacing of the cassette keels ≤ 600 mm.

[0008] Further, the spacing of the U-shaped light steel keels ≤ 600 mm.

[0009] Further, fireproof sealant is provided at the gaps between the fireproof boards.

[0010] Further, the heat insulation material is fixed on the surface of the air duct or the fireproof board by self-adhesive rock wool nails.

[0011] Further, the number of self-adhesive rock wool nails per square meter on the heat insulation material is not less than 7, and the center distance between the self-adhesive rock wool nails is not less than 260 mm.

[0012] Further, for the air ducts in the ceiling space, angle steel fasteners are arranged at intervals at each side seam of the fireproof board, and the spacing of the angle steel fasteners is not greater than 300 mm; for the air ducts in the non-ceiling space, angle steel fasteners are arranged along the entire length at each side seam of the fireproof board.

[0013] Further, the cross-section of the cassette ceiling runner is a U-shaped structure. The cassette ceiling runner includes a bottom plate and side wings located on both sides of the bottom plate and perpendicular to the bottom plate. Fixing holes are formed on the bottom plate, and bayonet openings are arranged at intervals on the side wings; the cross-section of the U-shaped light steel keel is a U-shaped structure. The U-shaped light steel keel includes a main connecting plate and side plates located on both sides of the main connecting plate and perpendicular to the main connecting plate. The free ends of the side plates are bent to form folded edges; the two side plates of the U-shaped light steel keel are respectively buckled into the bayonet openings of the cassette ceiling runner through the folded edges.

[0014] Further, starting from the open end to the bottom of the bayonet opening, the opening width of the upper half gradually contracts inward, the bottom surface and the contours on both sides of the lower half are both arc-shaped, a raised block is formed at the connection between the upper half and the lower half, and the width between the raised blocks on both sides in the bayonet opening is the smallest; the folded edge of the U-shaped light steel keel includes a folded edge first connecting plate and a folded edge second connecting plate. One end of the folded edge first connecting plate is vertically connected to the side plate, one end of the folded edge second connecting plate is vertically connected to the other end of the folded edge first connecting plate, and the other end of the folded edge second connecting plate faces the main connecting plate; when the U-shaped light steel keel is buckled and connected with the cassette ceiling runner, the folded edge second connecting plate is limited by the raised block.

[0015] The installation structure of the air duct fireproof board disclosed by the present utility model has a simple structure, and the installation of the fireproof board is convenient and fast. The present utility model uses the combination of the cassette ceiling runner and the U-shaped light steel keel to form a fixing frame for the fireproof board, which is more stable as a whole and reduces the possibility of deformation of the fixing frame; because the fixing frame has higher structural stability than the structure adopted in the prior art, there is no easy generation of gaps between the fireproof board and the air duct after installation. The present utility model also fills fireproof and heat insulation materials between the air duct and the fireproof board, further improving the fireproof effect. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the installation structure of the air duct fireproof board in the embodiment;

[0017] Figure 2 It is a structural schematic diagram of a U-shaped light steel keel;

[0018] Figure 3 It is Figure 2 the upward view schematic diagram at point A in

[0019] Figure 4 the structural schematic diagram of a cassette keel;

[0020] Figure 5 It is the assembly schematic diagram of the U-shaped light steel keel and the cassette keel;

[0021] Figure 6 It is Figure 5 the side view schematic diagram at point B in

[0022] Figure 7 the structural schematic diagram of an air duct support.

[0023] Reference numerals:

[0024] 1, air duct; 2, U-shaped light steel keel; 21, main connecting plate; 22, side plate; 23, first flanging connecting plate; 24, second flanging connecting plate; 3, fireproof board; 4, cassette keel; 41, bottom plate; 42, side wing; 43, fixing hole; 44, bayonet; 45, arc; 46, convex block; 5, heat insulation material; 6, air duct support; 61, base; 62, suspension rod; 7, angle steel fastener. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] This embodiment discloses an installation structure of an air duct fireproof board. As Figure 1 shown, it mainly includes an air duct 1, a U-shaped light steel keel 2, a cassette keel 4, a fireproof board 3, an air duct support 6, a heat insulation material 5, and an angle steel fastener 7. Among them, the air duct support 6 is used to fix the air duct 1. The cross-section of the air duct 1 is usually rectangular, and both ends of the air duct 1 are open for air inlet and outlet. The fireproof board 3 wraps the other four faces of the air duct 1 except the open ends. The fireproof board 3 covered on each face of the air duct 1 is fixed on a fixing frame composed of the cassette keel 4 and the U-shaped light steel keel 2. The structures of the above components will be described one by one below, and then how the components are connected will be introduced.

[0027] The structure of the U-shaped light steel keel 2 is as shown in Figure 2 and Figure 3As shown in the figure, the cross-section of the U-shaped light steel keel 2 is in a U-shaped structure. The entire U-shaped light steel keel 2 is composed of a main connecting plate 21, side plates 22 located on both sides of the main connecting plate 21, and flanges formed by bending the free ends of each side plate 22. Among them, holes are opened on the main connecting plate 21. The flanges are divided into a first connecting plate 23 of the flange and a second connecting plate 24 of the flange. One end of the first connecting plate 23 of the flange is perpendicular to and connected to the side plate 22. One end of the second connecting plate 24 of the flange is perpendicularly connected to the other end of the first connecting plate 23 of the flange. The other end of the second connecting plate 24 of the flange is a free end and faces the main connecting plate 21.

[0028] The structure of the cassette keel 4 is as Figure 4 As shown in the figure, the cross-section of the cassette keel 4 is also in a U-shaped structure. The entire cassette keel 4 is composed of a bottom plate 41 and side wings 42 located on both sides of the bottom plate 41 and perpendicularly connected to the bottom plate 41. Among them, fixing holes are opened on the bottom plate 41. A plurality of bayonet openings 44 are symmetrically and spaced on the two side wings 42. The side of the bayonet opening 44 away from the bottom plate 41 is open. In this embodiment, the overall contour inside the bayonet opening 44 is in a curved shape. Starting from the open end to the bottom of the bayonet opening 44, the opening width of the upper half gradually contracts and narrows inward from the open end. A raised locking block 43 is formed at the junction of the upper half and the lower half. In a single bayonet opening 44, the width between the raised locking blocks 43 on both sides is the smallest. The part below the raised locking block 43 is the lower half of the bayonet opening 44. Starting from the raised locking block 43 to the bottom surface of the bayonet opening 44, the width of the bayonet gradually widens. The bottom surface of the lower half is in an arc shape 45 that is concave towards the bottom plate 41.

[0029] The structure of the air duct support 6 is as Figure 7 As shown in the figure, the air duct support 6 includes a base 61 and a suspension rod 62. The base 61 is in a U-shaped groove structure. The open end of the base 61 faces downward. The two ends of the base 61 are respectively fixedly connected to the two suspension rods 62.

[0030] The installation method of the fireproof board 3 on the air duct 1 is as follows: As Figure 1 As shown in the figure, cassette keels 4 are first installed on the four surfaces of the air duct 1. A plurality of cassette keels 4 are spaced on each surface. Since the cassette keel 4 is in an overall straight bar shape, during installation, the length direction of the cassette keel 4 is arranged perpendicular to the length direction of the air duct 1. Self-tapping screws are inserted into the fixing holes on the bottom plate 41 of the cassette keel 4 to fix the cassette keel 4 on the air duct 1. The spacing between the cassette keels 4 on each surface ≤ 600 mm. After installing the cassette keels 4, U-shaped light steel keels 2 are installed on each surface of the air duct 1. The U-shaped light steel keel 2 is also in a straight bar shape, and its length direction is the same as the length direction of the air duct 1. The U-shaped light steel keel 2 spans between adjacent cassette keels 4 and is fixed to the cassette keel 4 in a snap-fastening manner. At least 2 U-shaped light steel keels 2 are also spaced on each surface. The spacing between the U-shaped light steel keels 2 on the same surface ≤ 600 mm. When the U-shaped light steel keel 2 is snap-fastened to the cassette keel 4, asFigure 5 and Figure 6 As shown in Figure 6 , the length of the U-shaped light steel keel 2 is greater than the spacing of the cassette keel 4. The two side plates 22 of the U-shaped light steel keel 2 are respectively inserted into two adjacent bayonets 44 of the cassette keel 4. At this time, the folded-edge second connecting plate 24 is limited by the protruding clamping block 43 to prevent the U-shaped light steel keel 2 from disengaging from the bayonet 44.

[0031] Continuing from the above, a fireproof board 3 is arranged on the outer side of the U-shaped light steel keel 2 on each side, and the fireproof board 3 is fixed to the U-shaped light steel keel 2 with self-tapping screws. Angle steel fasteners 7 are arranged at the right-angle connecting edge seams of the fireproof boards 3 on the adjacent surfaces of the air duct 1, and the angle steel fasteners 7 are fixed to the fireproof boards 3 with self-tapping screws. Fireproof sealant is arranged at the gaps between the fireproof boards 3. When installing the angle steel fasteners 7, for the air duct 1 in the ceiling space, the ceiling can hide the air duct 1. For the sake of cost savings, the angle steel fasteners 7 can be arranged at intervals at each edge seam of the fireproof board 3, and the spacing of the angle steel fasteners 7 is not greater than 300 mm; for the air duct 1 in the non-ceiling space, considering aesthetics, the angle steel fasteners 7 can be arranged along the entire length at each edge seam of the fireproof board 3 to wrap the edge seam.

[0032] In order to improve the fireproof effect, the gap between the air duct 1 and the fireproof board 3 is filled with a heat-insulating material 5. The heat-insulating material 5 has the function of fireproof and heat insulation. The heat-insulating material 5 can be pasted on the air duct 1 first after the cassette keel 4 is installed, and then the U-shaped light steel keel 2 is installed. The heat-insulating material 7 can be fixed on the surface of the air duct 1 or the inner surface of the fireproof board 3 through self-adhesive rock wool nails. When the self-adhesive rock wool nails are bonded, the number of self-adhesive rock wool nails per square meter on the heat-insulating material 7 is not less than 7, and the center spacing between the self-adhesive rock wool nails is not less than 260 mm.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An installation structure of a duct fireproof board, characterized in that: It includes an air duct, U-shaped light steel keels, cassette keels, fireproof boards, air duct supports, heat insulation materials, and angle steel fasteners. The air duct is fixed by the air duct supports. Cassette keels are arranged at intervals on each outer surface of the air duct. The cassette keels are straight bars and are arranged perpendicular to the length direction of the air duct. The cassette keels are fixed on the air duct by self-tapping screws, and bayonets are arranged at intervals on the cassette keels; U-shaped light steel keels are arranged at intervals on each outer surface of the air duct. The length direction of the U-shaped light steel keels is the same as the length direction of the air duct. The U-shaped light steel keels are buckled at the bayonets of the cassette keels; Fireproof boards are provided on each outer surface of the air duct. The fireproof boards are fixed on the U-shaped light steel keels by self-tapping screws. Angle steel fasteners are arranged at the right-angle joints of the fireproof boards on adjacent surfaces of the air duct. The angle steel fasteners are fixed at the edge seams of the fireproof boards by self-tapping screws. Heat insulation materials are filled in the gaps between the air duct and the fireproof boards.

2. The installation structure of a duct fireproof board according to claim 1, characterized in that: The spacing of the cassette keels ≤ 600 mm.

3. The installation structure of a duct fireproof board according to claim 1, characterized in that: The spacing of the U-shaped light steel keels ≤ 600 mm.

4. The installation structure of an air duct fireproof board according to claim 1, characterized in that: Fireproof sealant is provided at the seams between the fireproof boards.

5. The installation structure of an air duct fireproof board according to claim 1, characterized in that: The heat insulation materials are fixed on the surface of the air duct or the fireproof boards by self-adhesive rock wool nails.

6. The installation structure of an air duct fireproof board according to claim 5, characterized in that: The number of self-adhesive rock wool nails per square meter on the heat insulation materials is not less than 7, and the center spacing between the self-adhesive rock wool nails is not less than 260 mm.

7. The installation structure of a duct fireproof board according to claim 1, characterized in that: For the air ducts in the ceiling space, angle steel fasteners are arranged at intervals at each edge seam of the fireproof board, and the spacing of the angle steel fasteners is not greater than 300 mm; for the air ducts in the non-ceiling space, angle steel fasteners are arranged along the entire length at each edge seam of the fireproof board.

8. The installation structure of an air duct fireproof board according to claim 1, characterized in that: The cross-section of the cassette keel is a U-shaped structure. The cassette keel includes a bottom plate and side wings located on both sides of the bottom plate and perpendicular to the bottom plate. Fixing holes are opened on the bottom plate, and bayonets are arranged at intervals on the side wings; The cross-section of the U-shaped light steel keel is a U-shaped structure. The U-shaped light steel keel includes a main connecting plate and side plates located on both sides of the main connecting plate and perpendicular to the main connecting plate. The free ends of the side plates are formed into flanges by bending; The two side plates of the U-shaped light steel keel are respectively buckled in the bayonets of the cassette keel through the flanges.

9. The installation structure of a duct fireproof board according to claim 8, characterized in that: The bayonet starts from the open end to the bottom. The opening width of the upper half gradually contracts inward. The bottom surface and the side contours of the lower half are both arc-shaped. A raised block is formed at the junction of the upper half and the lower half. The width between the raised blocks on both sides of the bayonet is the smallest; The flange of the U-shaped light steel keel includes a flange first connecting plate and a flange second connecting plate. One end of the flange first connecting plate is vertically connected to the side plate. One end of the flange second connecting plate is vertically connected to the other end of the flange first connecting plate. The other end of the flange second connecting plate faces the main connecting plate; When the U-shaped light steel keel is buckled and connected with the cassette keel, the flange second connecting plate is limited by the raised block.

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