CN212249029U - Smoke-proof and smoke-discharging air pipe used in vertical pipeline well - Google Patents

Abstract

The utility model relates to a smoke-proof and smoke-exhausting air duct used in a vertical pipe well, belonging to the technical field of ventilation ducts. The smoke-proof and smoke-exhaust air duct used in the vertical pipe well comprises a galvanized steel air duct, an inner angle steel flange and a fireproof plate. The inner angle steel flanges are fixed on the inner sides of the two ends of the galvanized steel plate air duct used in the smoke prevention and exhaust air duct in the vertical pipe well by self-tapping screws, and the inner angle steel flanges are provided with a plurality of connecting holes. In this way, the construction personnel can use bolts to pass through the connecting holes on the two adjacent inner angle steel flanges from the inside of the smoke-proof and smoke-exhaust air duct, and fix the two sections of the smoke-proof and smoke-exhaust air duct together, thereby saving the construction personnel's work. The installation space improves the ventilation and exhaust efficiency of the smoke-proof and smoke-exhaust duct. In a word, the structure of the smoke-proof and smoke-exhaust air duct is simple and scientific, the assembly is convenient, the space is saved, and the working efficiency of the smoke-proof and smoke-exhaust air duct is improved.

Description

A smoke-proof and smoke-exhaust air duct used in a vertical pipe well

technical field

The utility model relates to a smoke-proof and smoke-exhausting air duct used in a vertical pipe well, belonging to the technical field of ventilation ducts.

Background technique

With the development of society, in order to avoid the occurrence of fire, the fire protection requirements for ventilation ducts are getting higher and higher. Since the implementation of GB51251-2017 "Technical Standards for Smoke Prevention and Exhaust Systems in Buildings" implemented on August 1, 2018, the design of smoke prevention systems, smoke exhaust systems and air supply systems requires the use of fireproof air ducts with fire resistance limits. The vertical smoke exhaust well has a small space. When installing the smoke prevention and exhaust duct, if the construction space for the construction and installation personnel is reserved outside the smoke prevention and exhaust duct, the actual use space of the smoke prevention and exhaust duct It will be smaller, thus affecting the working efficiency of the smoke prevention and exhaust duct.

Utility model content

In order to overcome the defects existing in the background technology, the technical solution adopted by the present invention to solve the technical problem is as follows: inner angle steel flanges are fixed on the inner surfaces of both ends of the galvanized steel sheet air duct by self-tapping screws, and the inner The angle steel flange is provided with a plurality of connecting holes, the height of the inner angle steel flange is the same as the height of the galvanized steel sheet air duct, and at least two light steel keels are arranged on the outside of the galvanized steel sheet The steel keel is fixed on the galvanized steel duct through self-tapping screws, and the fireproof board is fixed on the outside of the light steel keel through self-tapping screws.

Preferably, the outside of the galvanized steel duct is provided with at least two light steel keels, the light steel keels are fixed on the galvanized steel duct by self-tapping screws, and the rock wool is clamped between the light steel keels , the fireproof board is fixed on the light steel keel by self-tapping screws, the light steel keel is provided with a compression folded plate, the compression folded plate and the vertical plane are at an angle of 15 degrees, and the rock wool sticks It is covered on the outside of the galvanized steel sheet air duct, and the fireproof board is covered on the outside of the rock wool.

Preferably, the distance between two adjacent light steel keels on the galvanized steel sheet air duct is 50-70 cm.

The preferred thickness of the rock wool is 40-100 mm.

Preferably, the rock wool can be replaced by glass wool, and the light steel keel can be replaced by flat iron.

Preferably, the cross section of the light steel keel is "Z" shape or "U" shape.

The utility model designs a smoke-proof and smoke-exhaust air duct used in a vertical pipe well. The inner surfaces of both ends of the galvanized steel plate air-duct in the smoke-proof and smoke-exhaust air duct used in the vertical pipe well pass through the Tapping screws are fixed with inner angle steel flanges, and there are multiple connection holes on the inner angle steel flanges, so that the construction personnel can use bolts to pass through the connection holes on the two adjacent inner angle steel flanges from the inside of the smoke prevention and exhaust air duct. , the two sections of smoke-proof and smoke-exhaust air ducts are fixedly connected together, thereby saving the installation space of construction personnel and improving the ventilation and smoke-exhausting efficiency of the smoke-proof and smoke-exhaust air ducts. In a word, the structure of the smoke-proof and smoke-exhaust air duct is simple and scientific, the assembly is convenient, the space is saved, and the working efficiency of the smoke-proof and smoke-exhaust air duct is improved.

Description of drawings

The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

1 is a schematic structural diagram of a smoke-proof and smoke-exhaust air duct used in a vertical pipe well of the present invention;

2 is a partial cross-sectional view of a smoke-proof and smoke-exhaust air duct used in a vertical pipe well of the present invention;

Fig. 3 is the structural representation of specific embodiment two in the present utility model;

Fig. 4 is the internal structure schematic diagram of Fig. 3;

Among them: 1. Galvanized steel duct; 2. Inner angle steel flange; 3. Connecting hole; 4. Compression folded plate; 5. Light steel keel; 6. Self-tapping screw; 7. Rock wool; 8. Fireproof board .

Detailed ways

The present utility model will now be described in further detail in conjunction with the accompanying drawings. The accompanying drawings are simplified schematic diagrams, and only illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.

Specific embodiment 1, please refer to FIG. 1 and FIG. 2, a smoke and smoke exhaust air duct used in a vertical pipe well, including a galvanized steel plate air duct 1, an inner angle steel flange 2 and a fireproof plate 8. An inner angle steel flange 2 is fixed on the inner surface of both ends of the zinc steel plate air duct 1 through self-tapping screws 6, and the inner angle steel flange 2 is provided with a plurality of connecting holes 3, and the height of the inner angle steel flange 2 is the same as The height of the galvanized steel sheet air duct 1 is the same, and at least two light steel keels 5 are arranged on the outside of the galvanized steel sheet air duct 1. The light steel keel 5 is fixed on the galvanized steel sheet air duct 1 by self-tapping screws 6 , the fireproof board 8 is fixed on the outside of the light steel keel 5 by self-tapping screws 6 .

Specific embodiment 2, please refer to FIG. 3 and FIG. 4 , a smoke-proof and smoke-exhaust air duct used in a vertical pipe well, including a galvanized steel plate air duct 1, an inner angle steel flange 2 and a fireproof plate 8, the described An inner angle steel flange 2 is fixed on the inner surface of both ends of the galvanized steel plate air duct 1 by self-tapping screws 6, and a plurality of connecting holes 3 are provided on the inner angle steel flange 2. The height of the inner angle steel flange 2 is The height of the galvanized steel sheet air duct 1 is the same, and the fireproof plate 8 is fixed to the outside of the galvanized steel sheet air duct 1 by self-tapping screws 6. The outside of the galvanized steel sheet air duct 1 is provided with at least two light steel keels. 5. The light steel keel 5 is fixed on the galvanized steel duct 1 through self-tapping screws 6, the rock wool 7 is clamped between the light steel keels 5, and the fireproof plate 8 is fixed on the On the light steel keel 5, a pressing folded plate 4 is arranged on the light steel keel 5, and the pressing folded plate 4 forms an included angle of 15 degrees with the vertical plane, and the rock wool 7 is attached to the galvanized steel plate. On the outside of the pipe 1, the fireproof board 8 is covered on the outside of the rock wool 7, and the distance between the two adjacent light steel keels 5 on the galvanized steel air duct 1 is 60 cm. Thickness, 60 mm, the cross section of the light steel keel 5 is "Z".

The utility model designs a smoke-proof and smoke-exhaust air duct used in a vertical pipe well. The inner surfaces of both ends of the galvanized steel plate air-duct in the smoke-proof and smoke-exhaust air duct used in the vertical pipe well pass through the Tapping screws are fixed with inner angle steel flanges, and there are multiple connection holes on the inner angle steel flanges, so that the construction personnel can use bolts to pass through the connection holes on the two adjacent inner angle steel flanges from the inside of the smoke prevention and exhaust air duct. , the two sections of smoke and smoke exhaust ducts are fixedly connected together, thereby saving the installation space of construction personnel and improving the ventilation and exhaust efficiency of the smoke and smoke exhaust ducts. The air duct is suitable for the smoke-proof and smoke-exhaust air duct in the pipeline well whose diameter is greater than or equal to 350 mm in diameter and width. The two adjacent smoke-proof and smoke-exhaust air ducts pass through the bolts passing through the inner angle steel flange. Fixed connection together, saving the space of the pipe well and improving the efficiency of smoke and exhaust. In a word, the structure of the smoke-proof and smoke-exhaust air duct is simple and scientific, the assembly is convenient, the space is saved, and the working efficiency of the smoke-proof and smoke-exhaust air duct is improved.

Obviously, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. And the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims (6)

1. A smoke-proof and smoke-exhaust air duct used in a vertical pipe well, comprising a galvanized steel plate air duct (1), an inner angle steel flange (2) and a fireproof plate (8), characterized in that: the galvanized steel air duct (1) An inner angle steel flange (2) is fixed on the inner side surfaces of both ends of the steel plate air duct (1) by means of self-tapping screws (6). The height of the inner angle steel flange (2) is the same as the height of the galvanized steel sheet air duct (1), and at least two light steel keels (5) are provided on the outside of the galvanized steel sheet air duct (1). The steel keel (5) is fixed on the galvanized steel air duct (1) by self-tapping screws (6), and the fireproof plate (8) is fixed on the outside of the light steel keel (5) by self-tapping screws (6). 2. The smoke-proof and smoke-exhaust air duct used in a vertical pipe well according to claim 1, characterized in that, at least two light steel keels ( 5), the light steel keel (5) is fixed on the galvanized steel air duct (1) by self-tapping screws (6), and rock wool (7) is clamped between the light steel keels (5), so The fireproof board (8) is fixed on the light steel keel (5) by self-tapping screws (6), and a compression folded plate (9) is arranged on the light steel keel (5), and the compression folded plate (9) ) and the vertical plane at an angle of 15 degrees, the rock wool (7) is covered on the outside of the galvanized steel air duct (1), and the fireproof board (8) is covered on the outside of the rock wool (7). 3. A smoke-proof and smoke-exhaust air duct used in a vertical pipe well according to claim 2, characterized in that, two adjacent light steel keels (5) on the galvanized steel air duct (1) The distance between them is 50-70 cm. 4 . The smoke-proof and smoke-exhaust air duct used in a vertical pipe well according to claim 2 , wherein the rock wool ( 7 ) has a thickness of 40-100 mm. 5 . 5. The smoke-proof and smoke-exhaust air duct used in a vertical pipe well according to claim 2, wherein the rock wool (7) can be replaced by glass wool, and the light steel keel (5) Can be replaced with a flat iron. 6. The smoke-proof and smoke-exhaust air duct used in a vertical pipe well according to claim 2, characterized in that the cross-section of the light steel keel (5) is in a "Z" shape or a "U" shape .

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