High-temperature-resistant galvanized air pipe

Abstract

The utility model discloses a high-temperature-resistant galvanized air pipe, which belongs to the field of galvanized air pipes and comprises a galvanized air pipe body, a high-temperature-resistant protection mechanism is matched with the galvanized air pipe body for use, and a fireproof heat insulation layer consisting of an upper fireproof plate and a lower fireproof plate is covered outside the galvanized air pipe body. The galvanized air pipe body is provided with the upper fireproof plate and the lower fireproof plate, and is matched with rock wool mounted on the inner walls of the upper fireproof plate and the lower fireproof plate, so that the fireproof and heat-insulating performance of the galvanized air pipe body is further improved, a protective layer is formed outside the galvanized air pipe body, and external heat can be effectively isolated by the protective layer; the problems that a galvanized layer of the galvanized air pipe body falls off, a steel plate deforms, the fireproof performance is reduced, harmful gas is released and the like in the high-temperature environment are solved, the fireproof and heat-insulation protection effect on the galvanized air pipe body can be achieved, and therefore the high-temperature-resistant performance of the galvanized air pipe body used in the high-temperature environment is improved, and the service life of the galvanized air pipe body is prolonged. And the service life of the galvanized air pipe body is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of galvanized air ducts, in particular to a high-temperature resistant galvanized air duct. Background Art

[0002] Galvanized air duct is a key component in ventilation, air conditioning, and exhaust systems widely used in buildings and industry. It's primarily made from thin steel sheets, which are stamped and formed into tubing, then hot-dip galvanized. This treatment evenly coats the steel surface with a layer of zinc, enhancing its rust resistance and durability. This treatment not only extends the duct's service life but also imparts a range of excellent performance characteristics. Galvanized air duct is widely used in ventilation systems in commercial, residential, and industrial buildings for supply, circulation, exhaust, and waste gas treatment. In air conditioning systems, it serves as both supply and return air ducts, effectively controlling air flow. In the industrial sector, galvanized air duct is commonly used in exhaust systems in industrial manufacturing plants and food processing plants, as well as in the ventilation and exhaust systems of equipment such as hot air furnaces, boilers, and range hoods.

[0003] In the existing technology, galvanized air ducts have relatively limited high-temperature resistance due to their material and structural characteristics. When encountering high-temperature environments such as fire, the galvanized layer on the surface of the galvanized air duct will react with oxygen in the air, resulting in oxidation. Long-term oxidation may further cause the galvanized layer to peel off, causing the galvanized air duct base to be directly exposed to the high-temperature environment, accelerating the corrosion process. At the same time, the galvanized air duct will be deformed or cracked, and the temperature inside the galvanized air duct will rise rapidly, thereby affecting the transmission efficiency and safety of the internal medium, thereby making the galvanized air duct have poor fire and high-temperature resistance during use and shortening the service life of the galvanized air duct. Utility Model Content

[0004] The main purpose of the utility model is to provide a high-temperature resistant galvanized air duct, which can effectively solve the problems in the background technology.

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

[0006] A high-temperature resistant galvanized air duct, comprising a galvanized air duct body, wherein the outside of the galvanized air duct body is provided with a high-temperature resistant protection mechanism, and the high-temperature resistant protection mechanism comprises an upper fireproof plate, a lower fireproof plate, rock wool, a U-shaped bar, a movable bar, an inlay and a screw knob. Rock wool is fixedly connected to the inner walls of the upper and lower fireproof plates, and the U-shaped bar is movably connected to the lower fireproof plate through rotating rods at the bottom of both sides of the inner wall. The movable bar is movably connected to the upper inside of the U-shaped bar through sliding blocks on both sides, and the inlay is fixedly connected to the bottom surface of the movable bar. The screw knob is movably connected to the threaded hole on the top surface of the U-shaped bar, and the screw knob is also movably connected to the movable bar through the rotating block at the bottom end.

[0007] Preferably, the upper fireproof board and the lower fireproof board are both concave in shape, and rock wool is fixedly installed on the inner walls of the upper fireproof board and the lower fireproof board respectively. The thickness of the upper fireproof board and the lower fireproof board is 9 mm, and the thickness of the rock wool is 50 mm.

[0008] Preferably, a group of bilaterally symmetrical embedding grooves are provided on the top surface of the upper fireproof board.

[0009] Preferably, rotation holes are respectively provided on the front and rear side walls of the left and right ends of the lower fireproof plate.

[0010] Preferably, the U-shaped bar is in an inverted state, and rotating rods are fixedly installed at the bottom ends of the two side walls of the inner side of the U-shaped bar, and the rotating rods are movably installed in the rotating holes. Sliding openings are respectively provided at the tops of the two side walls of the inner side of the U-shaped bar, and a threaded hole is also provided on the top surface of the U-shaped bar.

[0011] Preferably, sliding blocks are fixedly installed on both side walls of the movable bar, and the sliding blocks are movably installed in the sliding opening. A convex groove is provided on the top surface of the movable bar, and a mosaic strip corresponding to the mosaic groove is fixedly installed on the bottom surface of the movable bar. The screw knob is threadedly connected to the threaded hole, and a rotating block is fixedly installed on the bottom end of the screw knob, and the rotating block is movably installed in the convex groove.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In the utility model, the high temperature protection mechanism is provided in conjunction with the use of the upper galvanized air duct body, the upper fireproof plate and the lower fireproof plate are merged on the outside of the galvanized air duct body, and the screw knob is rotated after the U-shaped strip is turned over to make the rotating block push the movable strip to move downward, so that the embedding strip is inserted into the embedding groove, and the upper fireproof plate and the lower fireproof plate can be connected together, and the galvanized air duct body can be wrapped between the upper fireproof plate and the lower fireproof plate, thereby further improving the galvanized air duct body by covering a fireproof and heat-insulating layer composed of the upper fireproof plate and the lower fireproof plate on the outside, and cooperating with the use of rock wool installed on the inner walls of the upper fireproof plate and the lower fireproof plate. The galvanized air duct body has fireproof and heat-insulating properties, and a protective layer is formed on the outside of the galvanized air duct body. The protective layer can effectively isolate external heat and prevent the galvanized layer from falling off, steel plate deformation, reduced fireproof performance and release of harmful gases in the galvanized air duct body under high temperature environment. It can also play a fireproof and heat-insulating protective role for the galvanized air duct body, thereby not only improving the high-temperature resistance of the galvanized air duct body when used in high-temperature environment, but also extending the service life of the galvanized air duct body, and facilitating the installation and use of the high-temperature protection mechanism on the galvanized air duct body, and can be disassembled and replaced in time after the high-temperature protection mechanism is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the overall structure of the upper fireproof board of the present utility model;

[0017] Figure 4 This is a schematic diagram of the structural disassembly of the lower fireproof board of the present invention.

[0018] In the figure: 1. Galvanized air duct body; 2. High temperature resistant protection mechanism; 3. Upper fireproof board; 4. Lower fireproof board; 5. Rock wool; 6. Embossed groove; 7. Rotation hole; 8. U-shaped bar; 9. Rotation rod; 10. Sliding mouth; 11. Threaded hole; 12. Movable bar; 13. Sliding block; 14. Convex groove; 15. Embossed strip; 16. Screw knob; 17. Rotation block. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] like Figure 1 - Figure 4 As shown, a high-temperature resistant galvanized air duct includes a galvanized air duct body 1, and the outside of the galvanized air duct body 1 is provided with a high-temperature resistant protection mechanism 2, and the high-temperature resistant protection mechanism 2 includes an upper fireproof plate 3, a lower fireproof plate 4, rock wool 5, a U-shaped bar 8, a movable bar 12, an inlay 15 and a screw knob 16. Rock wool 5 is fixedly connected to the inner walls of the upper fireproof plate 3 and the lower fireproof plate 4, and the U-shaped bar 8 is movably connected to the lower fireproof plate 4 through the rotating rod 9 at the bottom of both sides of the inner wall, the movable bar 12 is movably connected to the upper inside of the U-shaped bar 8 through the sliding blocks 13 on both sides, and the inlay 15 is fixedly connected to the bottom surface of the movable bar 12, the screw knob 16 is movably connected to the threaded hole 11 on the top surface of the U-shaped bar 8, and the screw knob 16 is also movably connected to the movable bar 12 through the rotating block 17 at the bottom end.

[0021] like Figure 2 and Figure 3As shown, the upper fireproof board 3 and the lower fireproof board 4 are both concave in shape, and rock wool 5 is fixedly installed on the inner walls of the upper fireproof board 3 and the lower fireproof board 4, respectively. The thickness of the upper fireproof board 3 and the lower fireproof board 4 is 9 mm, and the thickness of the rock wool 5 is 50 mm. The concave shape of the upper fireproof board 3 and the lower fireproof board 4 can make the upper fireproof board 3 and the lower fireproof board 4 cover the outside of the galvanized air duct body 1 to wrap the galvanized air duct body 1 to form a fireproof and heat-insulating layer, and in conjunction with the use of the upper rock wool 5, according to the material properties of the upper fireproof board 3, the lower fireproof board 4 and the rock wool 5 themselves, the fireproof and heat-insulating performance of the galvanized air duct body 1 can be further improved, and a protective layer is formed on the outside of the galvanized air duct body 1, so that the galvanized air duct body 1 has good high-temperature resistance when used in a high-temperature environment;

[0022] like Figure 3 As shown, a set of bilaterally symmetrical embedding grooves 6 are provided on the top surface of the upper fireproof board 3. The embedding grooves 6 provided on the upper fireproof board 3 are used to cooperate with the embedding strips 15. After the embedding strips 15 are embedded in the embedding grooves 6, the upper fireproof board 3 and the lower fireproof board 4 can be connected and fixed together.

[0023] like Figure 4 As shown, a rotation hole 7 is respectively opened on the front and rear side walls of the left and right ends of the lower fireproof plate 4. The rotation hole 7 opened on the lower fireproof plate 4 is used to cooperate with the rotation rod 9 to realize the rotation operation, so as to complete the flipping operation of the U-shaped bar 8 through the rotation rod 9;

[0024] like Figure 4 As shown, the U-shaped bar 8 is in an inverted state, and the bottom ends of the inner side walls of the U-shaped bar 8 are respectively fixed with rotating rods 9, and the rotating rods 9 are movably installed in the rotating hole 7. The tops of the inner side walls of the U-shaped bar 8 are respectively provided with sliding openings 10, and the top surface of the U-shaped bar 8 is also provided with threaded holes 11. When the U-shaped bar 8 is turned over, the rotating rods 9 will rotate in the rotating holes 7, and the sliding openings 10 provided on the U-shaped bar 8 are used to cooperate with the sliding block 13 to realize the sliding operation, and the threaded holes 11 provided are used to cooperate with the screw knob 16 to realize the threaded rotation;

[0025] like Figure 4The cam 15 is fixedly mounted on the two side walls of the movable bar 12, and the sliding block 13 is movably mounted in the sliding opening 10. The top surface of the movable bar 12 is provided with a convex groove 14, and the bottom surface of the movable bar 12 is fixedly mounted with an inlay 15 corresponding to the inlay groove 6. The screw knob 16 is threadedly connected to the threaded hole 11, and the bottom end of the screw knob 16 is fixedly mounted with a rotating block 17. The rotating block 17 is movably mounted in the convex groove 14. After rotating the screw knob 16 to realize the threaded rotation operation in the threaded hole 11, the movable bar 12 is pushed downward by the rotating block 17 in the convex groove 14, and the sliding block 13 will slide in the sliding opening 10 until the inlay 15 is inserted into the inlay groove 6, thereby connecting and fixing the upper fireproof plate 3 and the lower fireproof plate 4 together, and wrapping the galvanized air duct body 1 inside it for use. At the same time, it also achieves the purpose of facilitating the disassembly and assembly of the high-temperature resistant protection mechanism 2 on the galvanized air duct body 1.

[0026] It should be noted that the present invention is a high temperature resistant galvanized air duct. Before the galvanized air duct body 1 is actually used, the galvanized air duct body 1 is placed in the notch of the lower fireproof board 4, and the upper fireproof board 3 is placed on the top of the galvanized air duct body 1. After the upper fireproof board 3 and the lower fireproof board 4 are combined together, the galvanized air duct body 1 is wrapped, and the U-shaped strips 8 on both sides of the lower fireproof board 4 are flipped in the relative directions. When flipping, the rotating rods 9 installed at the bottom ends of both sides of the U-shaped strip 8 will rotate in the corresponding rotating holes 7 opened on the lower fireproof board 4. When the U-shaped strip 8 is flipped, the rotating rods 9 installed at the bottom ends of the two sides of the U-shaped strip 8 will rotate in the corresponding rotating holes 7 opened on the lower fireproof board 4. After the bar 8 is flipped to 90 degrees and presents an inverted state in the vertical direction, the screw knob 16 located on the top surface of the U-shaped bar 8 is rotated. The screw knob 16 will realize the threaded rotation operation in the threaded hole 11 opened on the top surface of the U-shaped bar 8, and drive the rotating block 17 installed on the top to rotate in the convex groove 14 opened on the top surface of the movable bar 12. In the process of continuously rotating the screw knob 16, the movable bar 12 will be pushed downward by the rotating block 17, and the sliding blocks 13 installed on both sides of the movable bar 12 will slide in the sliding openings 10 opened on the top of the inner wall of the U-shaped bar 8. The movable strip 12 is moved until the molding strip 15 installed on the bottom surface of the movable strip 12 is inserted into the molding groove 6 opened on the top surface of the upper fireproof board 3. In this way, the upper fireproof board 3 and the lower fireproof board 4 can be quickly connected and fixed to the outside of the galvanized air duct body 1 for use, and can be disassembled and replaced in time after the high-temperature protection mechanism 2 is damaged. Thus, a fireproof and heat-insulating layer composed of the upper fireproof board 3 and the lower fireproof board 4 is covered on the outside of the galvanized air duct body 1, and the rock wool 5 installed on the inner wall of the upper fireproof board 3 and the lower fireproof board 4 is used. The material properties of the plate 3, the lower fireproof board 4 and the rock wool 5 can improve the fireproof and heat-insulating properties of the galvanized air duct body 1, so that a protective layer is formed on the outside of the galvanized air duct body 1. The protective layer can effectively isolate the external high-temperature heat, prevent the galvanized air duct body 1 from peeling off the galvanized layer, deforming the steel plate, reducing the fireproof performance and releasing harmful gases in a high-temperature environment, and can play a fireproof and heat-insulating protective role for the galvanized air duct body 1, thereby not only improving the high-temperature resistance of the galvanized air duct body 1, but also extending the service life of the galvanized air duct body 1.

[0027] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, various improvements may be made to the present invention and its components may be replaced with equivalents, or some of its technical features may be replaced with equivalents without departing from the scope of the present invention. Anything within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-temperature resistant galvanized air duct, comprising a galvanized air duct body (1), characterized in that: The outside of the galvanized air duct body (1) is provided with a high-temperature resistant protection mechanism (2), and the high-temperature resistant protection mechanism (2) includes an upper fireproof plate (3), a lower fireproof plate (4), rock wool (5), a U-shaped strip (8), a movable strip (12), an insert (15) and a screw knob (16). The inner walls of the upper fireproof plate (3) and the lower fireproof plate (4) are fixedly connected with rock wool (5), and the U-shaped strip (8) is movably connected to the lower fireproof plate (4) through a rotating rod (9) at the bottom of both sides of the inner wall. The movable strip (12) is movably connected to the upper inside of the U-shaped strip (8) through sliding blocks (13) on both sides, and the insert (15) is fixedly connected to the bottom surface of the movable strip (12). The screw knob (16) is movably connected to the threaded hole (11) on the top surface of the U-shaped strip (8), and the screw knob (16) is also movably connected to the movable strip (12) through a rotating block (17) at the bottom end.

2. The high-temperature resistant galvanized air duct according to claim 1, characterized in that: The upper fireproof board (3) and the lower fireproof board (4) are both concave in shape, and rock wool (5) is fixedly installed on the inner walls of the upper fireproof board (3) and the lower fireproof board (4), respectively. The thickness of the upper fireproof board (3) and the lower fireproof board (4) is 9 mm, and the thickness of the rock wool (5) is 50 mm.

3. The high-temperature resistant galvanized air duct according to claim 2, characterized in that: The top surface of the upper fireproof plate (3) is provided with a group of bilaterally symmetrical embedding grooves (6).

4. The high-temperature resistant galvanized air duct according to claim 3, characterized in that: Rotation holes (7) are respectively provided on the front and rear side walls of the left and right ends of the lower fireproof plate (4).

5. The high-temperature resistant galvanized air duct according to claim 4, characterized in that: The U-shaped bar (8) is in an inverted state, and the bottom ends of the inner two side walls of the U-shaped bar (8) are respectively fixedly mounted with rotating rods (9), and the rotating rods (9) are movably mounted in the rotating holes (7). The tops of the inner two side walls of the U-shaped bar (8) are respectively provided with sliding openings (10), and the top surface of the U-shaped bar (8) is also provided with threaded holes (11).

6. The high temperature resistant galvanized air duct according to claim 5, characterized in that: Sliding blocks (13) are fixedly mounted on both side walls of the movable bar (12), and the sliding blocks (13) are movably mounted in the sliding opening (10). A convex groove (14) is provided on the top surface of the movable bar (12), and a mosaic strip (15) corresponding to the mosaic groove (6) is fixedly mounted on the bottom surface of the movable bar (12). The screw knob (16) is threadedly connected to the threaded hole (11), and a rotating block (17) is fixedly mounted on the bottom end of the screw knob (16), and the rotating block (17) is movably mounted in the convex groove (14).

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