Fireproof structure of smoke prevention and exhaust air pipe

Abstract

The utility model discloses a fireproof structure of a smoke prevention and exhaust air pipe, which belongs to the technical direction of air pipe fire prevention and comprises an iron sheet smoke prevention and exhaust pipeline, centrifugal glass wool is coated on the outer side surface of the iron sheet smoke prevention and exhaust pipeline, and a waterproof flame-retardant FFR veneer is fixedly mounted on the outer side surface of the centrifugal glass wool. Through cooperative use of the centrifugal glass wool and the iron sheet smoke prevention and exhaust pipeline, flame-retardant and heat-insulation effects can be achieved on the iron sheet smoke prevention and exhaust pipeline, it is guaranteed that the iron sheet smoke prevention and exhaust pipeline can normally exhaust air at the high temperature, and through cooperative use of the waterproof flame-retardant FFR veneer, the surface strength and the sealing performance of the centrifugal glass wool can be improved; the iron sheet smoke prevention and exhaust pipeline has the advantages that water can be blocked, air can be isolated, impression can be improved, oxidation of welding positions of the welding studs and the iron sheet can be prevented, the centrifugal glass wool can be fixed to the surface of the iron sheet smoke prevention and exhaust pipeline and closely attached to the surface of the iron sheet smoke prevention and exhaust pipeline through cooperative use of the multiple sets of welding studs, heat resistance of the iron sheet smoke prevention and exhaust pipeline is improved, dead weight of the fireproof coating is reduced, and building space occupation is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical direction of air duct fire prevention, and specifically relates to a fire prevention structure of a smoke exhaust air duct. Background Art

[0002] The smoke exhaust duct is a piping system in a building used to remove smoke and harmful gases from a fire. When a fire occurs, the smoke exhaust duct can discharge smoke and harmful gases to the outside, leaving people's escape routes unobstructed, reducing the damage to buildings and personnel caused by the fire. The structure of the smoke exhaust duct generally includes a duct body, a fireproof isolation layer, an insulation layer and a thermal insulation layer. The duct body is generally made of metal plates, such as stainless steel plates or galvanized plates. The fireproof isolation layer is wrapped with fireproof materials on the outside of the duct to prevent the spread of fire. The insulation layer and the thermal insulation layer are used to maintain the internal temperature of the duct stable. In the field of fireproof coating of building smoke exhaust iron ducts, the most common fireproof coating system for smoke exhaust iron ducts is a fireproof board coating system (light steel keel + fireproof cotton + fireproof board + stainless steel trim).

[0003] The existing coating process of smoke exhaust iron duct is relatively complicated and the construction speed is slow. After the installation, the fireproof coating system has a large deadweight and will occupy more building space, which is inconvenient and not conducive to the rational use of building space. Utility Model Content

[0004] The utility model aims to provide a fireproof structure of a smoke exhaust duct for existing devices to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a fireproof structure of a smoke exhaust duct, comprising an iron smoke exhaust pipe, the outer surface of which is covered with centrifugal glass wool, and the outer surface of which is fixedly installed with a water-resistant and flame-retardant FFR veneer.

[0006] The utility model further describes that a plurality of groups of welding nails are installed in an array on the water-resistant and flame-retardant FFR veneer.

[0007] The utility model further illustrates that a sealing tape is arranged at the connection of the centrifugal glass wool.

[0008] The utility model further illustrates that the iron sheet smoke exhaust pipe is placed on the ground of the construction site.

[0009] The utility model further illustrates that the installation spacing of several groups of welding nails is cm, and several groups of welding nails are arranged in rows and lines.

[0010] The utility model further illustrates that the lengths of the plurality of groups of welding nails are consistent with the thickness of the centrifugal glass wool.

[0011] Compared with the prior art, the beneficial effects achieved by the utility model are as follows: the utility model, through the coordinated use of centrifugal glass wool and iron smoke exhaust duct, can play a flame retardant and heat-insulating role for the iron smoke exhaust duct, ensuring that the iron smoke exhaust duct under high temperature can normally exhaust and supply air, and through the coordinated use of water-resistant and flame-retardant FFR veneer, the surface strength and sealing performance of the centrifugal glass wool can be improved, which can block water and isolate air and improve the appearance, and can also prevent oxidation at the welding point between the welding nails and the iron sheet, and through the coordinated use of several groups of welding nails, the centrifugal glass wool can be fixed on the surface of the iron smoke exhaust duct 1 and make it fit tightly, which effectively improves the heat resistance of the iron smoke exhaust duct, and the fixing process is simpler, the quality is more stable, the dead weight of the fireproof coating is reduced, and the building space occupied is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the installation method of the welding nail of the utility model;

[0015] In the picture: 1. Iron smoke exhaust duct; 2. Centrifugal glass wool; 3. Welding nails; 4. Water-resistant and flame-retardant FFR veneer; 5. Sealing tape. DETAILED DESCRIPTION

[0016] The following is a further non-limiting detailed description of the technical solution of the utility model in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-2The utility model provides a technical solution: a fireproof structure of a smoke exhaust duct, comprising an iron sheet smoke exhaust duct 1, the iron sheet smoke exhaust duct 1 is placed on the ground of the construction site, the outer surface of the iron sheet smoke exhaust duct 1 is covered with centrifugal glass wool 2, which is used to play a flame retardant and heat-insulating role, and the outer surface of the centrifugal glass wool 2 is fixedly installed with a water-resistant and flame-retardant FFR veneer 4, which is used to improve the surface strength and sealing performance of the centrifugal glass wool 2, can block water and isolate air and improve the appearance, and a plurality of groups of welding nails 3 are installed in an array on the water-resistant and flame-retardant FFR veneer 4, which are used to fix the water-resistant and flame-retardant FFR veneer 4 on the centrifugal glass wool 2 to prevent it from falling off during use, and a sealing tape 5 is provided at the connection of the centrifugal glass wool 2, which is used to seal the interface of the centrifugal glass wool 2 to ensure the fireproof and heat-insulating properties of the centrifugal glass wool 2;

[0018] The installation spacing of several groups of welding nails 3 is 20 cm, and several groups of welding nails 3 are arranged in rows and lines. The length of the welding nails 3 is consistent with the thickness of the centrifugal glass wool 2.

[0019] In this embodiment:

[0020] When the construction workers need to install the iron sheet smoke exhaust pipe 1, the construction workers first place the iron sheet smoke exhaust pipe 1 on the construction site, and after cleaning the surface of the iron sheet smoke exhaust pipe 1, use centrifugal glass wool 2 to cover the surface of the iron sheet smoke exhaust pipe 1. After the centrifugal glass wool 2 is covered, the construction workers use a welding gun to spot weld several groups of welding nails 3 in rows and lines on the iron sheet smoke exhaust pipe 1. Several groups of welding nails 3 fix the centrifugal glass wool 2 on the iron sheet smoke exhaust pipe 1 and make it fit tightly. Then the construction workers paste the water-resistant and flame-retardant FFR veneer 4 on the surface of the centrifugal glass wool 2 to improve the surface strength and sealing performance of the centrifugal glass wool 2, which can block water and isolate air and improve the appearance, and can also prevent oxidation of the welding point between the welding nail and the iron sheet. After the water-resistant and flame-retardant FFR veneer 4 is pasted, the construction workers use sealing tape 5 to paste it on the interface of the centrifugal glass wool 2 to seal it, so as to ensure the fire resistance of the centrifugal glass wool 2;

[0021] Through the coordinated use of centrifugal glass wool 2 and iron sheet smoke exhaust duct 1, the iron sheet smoke exhaust duct 1 can be flame-retardant and heat-insulating, ensuring that the iron sheet smoke exhaust duct 1 can exhaust and supply air normally under high temperature; through the coordinated use of water-resistant and flame-retardant FFR veneer 4, the surface strength and sealing performance of the centrifugal glass wool 2 can be improved, which can block water and isolate air and improve the appearance, and can also prevent oxidation at the welding point between the welding nails and the iron sheet; through the coordinated use of several groups of welding nails 3, the centrifugal glass wool 2 can be fixed on the surface of the iron sheet smoke exhaust duct 1 and make it fit tightly, which effectively improves the heat resistance of the iron sheet smoke exhaust duct 1, and the fixing process is simpler, the quality is more stable, the dead weight of the fireproof coating is reduced, and the occupied building space is reduced.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A fireproof structure for a smoke exhaust duct, comprising an iron smoke exhaust duct (1), characterized in that: The outer surface of the iron sheet smoke exhaust pipe (1) is covered with centrifugal glass wool (2), and the outer surface of the centrifugal glass wool (2) is fixedly installed with a water-resistant and flame-retardant FFR veneer (4).

2. A fireproof structure for smoke exhaust duct according to claim 1, characterized in that: A plurality of groups of welding pins (3) are installed in an array on the water-resistant and flame-retardant FFR veneer (4).

3. The fireproof structure of the smoke exhaust duct according to claim 2, characterized in that: A sealing tape (5) is provided at the connection of the centrifugal glass wool (2).

4. The fireproof structure of the smoke exhaust duct according to claim 3, characterized in that: The iron sheet smoke exhaust pipe (1) is placed on the ground of the construction site.

5. The fireproof structure of the smoke exhaust duct according to claim 4, characterized in that: The installation spacing of the plurality of groups of welding nails (3) is 20 cm, and the plurality of groups of welding nails (3) are arranged in rows and lines.

6. The fireproof structure of the smoke exhaust duct according to claim 5, characterized in that: The lengths of the plurality of groups of welding pins (3) are consistent with the thickness of the centrifugal glass wool (2).

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