Large stainless steel air pipe fixing device

Abstract

The utility model belongs to the technical field of air pipes, and particularly relates to a large stainless steel air pipe fixing device which comprises a pipe body, a plurality of isolation frames are arranged on the outer surface of the pipe body in a sleeved mode, a pair of U-shaped supports are arranged between any two adjacent isolation frames in a sleeved mode, and a sealing strip is connected between the U-shaped supports through bolts. A closed connecting isolation belt is formed at the connecting position between the front pair of U-shaped supports and the rear pair of U-shaped supports through the isolation frame, the sealing performance of the isolation frame at the connecting position between the front pair of U-shaped supports and the rear pair of U-shaped supports is enhanced through the sealing strips, and drying agents are contained in the drying box to absorb moisture in air through the first ventilation holes, the second ventilation holes, the third ventilation holes, the fourth ventilation holes and the ventilation channels. The air humidity is reduced, electrochemical reaction corrosion between different materials is delayed, all the materials and all the structures are connected more tightly and firmly, and the problems that according to an existing large stainless steel air pipe fixing device, electrochemical corrosion is likely to be caused, and the splicing and assembling stability between different materials is reduced are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air ducts, and in particular relates to a large stainless steel air duct fixing device. Background Art

[0002] Ducts are piping systems used for air transportation and distribution. They are categorized by structure into composite and inorganic ducts. Their cross-sectional shapes include circular, rectangular, and oblate ducts. Their materials include metal, composite, and polymer ducts. Circular ducts offer the lowest resistance, while rectangular ducts are the simplest to manufacture and are not subject to size restrictions. Therefore, rectangular ducts are the most commonly used in the market.

[0003] In a humid environment, there is more moisture in the air, and the air will enter the inside of the air duct. The moisture carries more oxygen and contacts the surface of the air duct as the air flows, causing electrochemical corrosion on the joints between different materials on the surface of the air duct. Welding is usually used to splice different materials together. Larger air ducts require larger reinforcement devices and more complex structures. Due to the different materials and the interference of electrochemical corrosion factors, it is difficult to assemble and splice different materials, which makes the stability of the connection between different materials of the device worse and reduces the service life of the device. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and solve the problem that the existing large stainless steel air duct fixing device is prone to electrochemical corrosion and reduces the stability of the splicing assembly between different materials.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a large stainless steel air duct fixing device, comprising a pipe body, a plurality of isolation frames are sleeved on the outer surface of the pipe body, a pair of U-shaped brackets are sleeved between any two adjacent isolation frames, sealing strips are connected between the U-shaped brackets by bolts, protective layers are laid on the outer ends of the U-shaped brackets, a gasket is connected between the U-shaped bracket and the pipe body by bolts, a supporting pad is connected between the gasket and the air duct by bolts, and a first ventilation hole is opened at the upper and lower ends of the air duct and communicates with the interior of the adjacent drying box;

[0006] Isolation strips are connected to each other on both upper and lower sides of the two U-shaped brackets located between two adjacent isolation frames by bolts. The upper and lower ends of the U-shaped brackets are detachably connected to drying boxes. Fourth ventilation holes are provided at both front and rear ends of the drying boxes. Second ventilation holes are provided at the inner ends of the drying boxes. Cover plates are detachably connected to the outer ends of the drying boxes, and third ventilation holes are provided on the outer surfaces of the cover plates.

[0007] In a preferred technical solution of the present invention, a plurality of grid plates are provided inside the tube body.

[0008] In a preferred technical solution of the present invention, ventilation ducts flush with the adjacent drying box are opened on both the upper and lower sides of the U-shaped support cross section, the ventilation ducts are connected to the interior of the adjacent fourth ventilation hole, and the fourth ventilation hole is connected to the interior of the adjacent drying box.

[0009] In a preferred technical solution of the present invention, a plurality of sleeve frames are provided on the outer surface of the protective layer, and the four corners of the two sleeve frames between any two adjacent isolation frames are detachably connected with connecting rods.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] By arranging a U-shaped support on the outer surface of the air duct, a stable and reinforced encirclement structure can be formed on the outer periphery of the pipe body. The support pad and the liner form an isolation structure between the U-shaped support and the pipe body. The protective layer forms a protective material coating on the outer surface of the U-shaped support to isolate it from the outside air. The isolation strip separates the two U-shaped supports between the two adjacent isolation frames from each other. The isolation frame forms a closed connection isolation belt at the connection between the front and rear pairs of U-shaped supports. The sealing strip enhances the sealing performance of the isolation frame at the connection between the front and rear pairs of U-shaped supports, forming an electrically insulating isolation structure between multiple materials. The grid plate ensures that a stable support and reinforcement structure is formed for the inner wall of the air duct when air circulates inside the air duct. The desiccant is contained in the drying box to absorb moisture in the air through the first ventilation hole, the second ventilation hole, the third ventilation hole, the fourth ventilation hole, and the ventilation duct, reducing the moisture content in the air, thereby reducing the contact between moisture in the air and the inner and outer walls of the air duct and the surfaces of different materials, reducing the air humidity, and delaying the electrochemical reaction corrosion between different materials, so that each material and each structure are more tightly and firmly connected, enhancing the firmness of the device for fixing the air duct and extending the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall external structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the internal and external structures of a single pair of U-shaped brackets of the present invention;

[0014] Figure 3 This is a schematic cross-sectional view of the overall internal structure of the utility model;

[0015] Figure 4 This is a cross-sectional view of the overall internal structure of the utility model;

[0016] Figure 5 This is a disassembled rendering of the internal structure of the drying box of the present invention.

[0017] In the figure: 1. sleeve frame; 2. connecting rod; 3. protective layer; 4. sealing strip; 5. isolation frame; 6. grid plate; 7. tube body; 8. first ventilation hole; 9. support pad; 10. gasket; 11. U-shaped support; 12. drying box; 13. cover plate; 14. second ventilation hole; 15. third ventilation hole; 16. fourth ventilation hole; 17. ventilation duct; 18. isolation strip. DETAILED DESCRIPTION

[0018] See also Figure 1-5 The utility model provides a technical solution: a large stainless steel air duct fixing device, including a tube body 7, a plurality of isolation frames 5 are set in the outer surface of the tube body 7, a pair of U-shaped brackets 11 are set between any two adjacent isolation frames 5, a sealing strip 4 is connected between the U-shaped brackets 11 by bolts, a protective layer 3 is laid on the outer end of the U-shaped bracket 11, a liner 10 is connected between the U-shaped bracket 11 and the tube body 7 by bolts, and a support pad 9 is connected between the liner 10 and the air duct by bolts. The upper and lower ends of the air duct are provided with a first ventilation hole 8 that penetrates the interior of the adjacent drying box 12; the two adjacent isolation frames 5 are located between the two adjacent isolation frames 5. Isolation strips 18 are connected between the upper and lower sides of the U-shaped brackets 11 by bolts, and the upper and lower ends of the U-shaped brackets 11 are detachably connected to the drying boxes 12. The front and rear ends of the drying boxes 12 are provided with fourth ventilation holes 16, the inner ends of the drying boxes 12 are provided with second ventilation holes 14, and the outer ends of the drying boxes 12 are detachably connected to the cover plates 13, and the outer surfaces of the cover plates 13 are provided with third ventilation holes 15; ventilation ducts 17 flush with the adjacent drying boxes 12 are provided on the upper and lower sides of the cross section of the U-shaped bracket 11, and the ventilation ducts 17 are connected to the inner sides of the adjacent fourth ventilation holes 16, and the fourth ventilation holes 16 are connected to the inner sides of the adjacent drying boxes 12. The pipe body 7 is provided with a plurality of grid plates 6, which are inserted into the air duct so that the grid plates 6 are arranged in an equidistant distribution pattern inside the air duct, and a support pad 9 is laid on the outside of the air duct, and a liner 10 is laid on the surface of the support pad 9. A plurality of isolation frames 5 are inserted into the periphery of the air duct into a front-to-back arrangement, and U-shaped supports 11 are placed in pairs between the front and rear adjacent isolation frames 5 to the periphery of the air duct. The support pad 9 and the liner 10 form a double electrically insulating isolation protection structure between the inner wall of the U-shaped support 11 and the outer wall of the pipe body 7. The U-shaped support 11 forms a cage-shaped protection structure similar to a Faraday cage on the periphery of the pipe body 7 to reinforce and Protection; The isolation frame 5 forms a closed connection isolation belt at the connection between the front and rear pairs of U-shaped supports 11, and the isolation frame 5 fills the gap between the front and rear pairs of U-shaped supports 11. The front and rear pairs of U-shaped supports 11 are connected as a whole by the isolation belt, which is conducive to dividing the U-shaped support 11 into many sections for separate construction. The U-shaped support 11 and the isolation frame 5 are connected as a whole with bolts. At the same time, the gap between the U-shaped support 11 and the isolation frame 5 is reinforced by filling the gap with glue. After the glue dries naturally, it will solidify at the gap between the U-shaped support 11 and the isolation frame 5. The support pad 9 and the liner 10 form an isolation structure between the U-shaped support 11 and the tube body 7.

[0019] Place the isolation strip 18 between the left and right U-shaped supports 11 of the two adjacent isolation frames 5 in the front and rear. The isolation strip 18 and the U-shaped support 11 are connected into one with bolts, or glue is applied between the isolation strip 18 and the U-shaped support 11 to reinforce them. The isolation strip 18 fills the gap between the left and right U-shaped supports 11. The isolation strip 18 separates the left and right U-shaped supports 11 between the two adjacent isolation frames 5 in the front and rear, and the left and right U-shaped supports 11 between the two adjacent isolation frames 5 in the front and rear are connected into one by the isolation strip 18.

[0020] The sealing strip 4 is attached to the left and right ends of each isolation frame 5. The sealing strip 4 covers the isolation frame 5 and further fills the gap between the isolation frame 5 and the U-shaped support 11. The sealing strip 4 and the isolation frame 5 are connected into one with bolts, and glue can be used for auxiliary reinforcement.

[0021] The outer surface of the protective layer 3 is sleeved with multiple sleeves 1. The four corners of the two sleeves 1 between any two adjacent isolation frames 5 are detachably connected with connecting rods 2. The sleeve 1 is sleeved on the outer periphery of the U-shaped support 11. The connecting rods 2 are respectively inserted into the four corners between the front and rear sleeves 1 located between the two adjacent isolation frames 5. The connecting rods 2 reinforce the sleeve 1 and sleeve it on the outer periphery of the U-shaped support 11. The sleeve 1 and the connecting rods 2 are connected into one by bolts, and glue can be used for auxiliary reinforcement.

[0022] By arranging a U-shaped support 11 on the surface of the air duct, a stable and reinforced encirclement structure can be formed on the periphery of the tube body 7. The isolation frame 5 and the isolation strip 18 strengthen the sealing of the U-shaped support 11. The air duct is surrounded by the U-shaped support 11. The protective layer 3 forms a protective material coating on the surface of the U-shaped support 11 to isolate it from the outside air. The sealing strip 4 enhances the sealing of the isolation frame 5 at the connection between the front and rear pairs of U-shaped supports 11. The isolation frame 5 separates the front and rear pairs of U-shaped supports 11 while maintaining a tight connection. The sealing strip 4 makes the isolation frame 5 more closed. The main body of the tube body 7 is made of stainless steel, and the U-shaped support 11 is made of galvanized channel steel + magnesium-aluminum alloy. The remaining structures are made of electrically insulating materials to form an electrically insulating isolation structure between multiple materials, avoiding direct contact between different materials while ensuring the firmness of the connection.

[0023] Open the cover 13 and put the desiccant into the drying box 12 in advance, and then close the cover 13 again. The cover 13 and the drying box 12 are connected and sealed together with bolts. The desiccant is contained in the drying box 12 to absorb moisture in the air through the first ventilation hole 8, the second ventilation hole 14, the third ventilation hole 15, the fourth ventilation hole 16, and the ventilation duct 17, reducing the moisture content in the air, so as to reduce the contact between the moisture in the air and the inner and outer walls of the air duct and the surfaces of different materials, which can minimize the entry of moisture and air into the air duct to the greatest extent, reduce the air humidity, and delay the electrochemical reaction corrosion between different materials, so that each material and each structure is more tightly and firmly connected. The grid plate 6 ensures that when the air circulates inside the air duct, a stable support and reinforcement structure is formed on the inner wall of the air duct, thereby enhancing the firmness of the device to the air duct and extending the service life of the device.

[0024] Bolts are used throughout the entire process to connect the various components to form a whole, and glue is used to assist in reinforcement and filling the gaps. Different materials can be firmly connected without welding. The device has a simple structure and is easy to assemble, thus eliminating the high cost of welding. There is no need to preset welding slot structures at the connections between various components and materials, which also simplifies the assembly and splicing process. Compared with the method of using welding throughout, this assembly and splicing method is highly efficient. This solution is suitable for larger air ducts, and the device is suitable for reinforcing large stainless steel air ducts.

Claims

1. A large stainless steel air duct fixing device, comprising a tube body (7), characterized in that: The outer surface of the tube body (7) is provided with a plurality of isolation frames (5), and a pair of U-shaped supports (11) are provided between any two adjacent isolation frames (5), a sealing strip (4) is connected between the U-shaped supports (11) by bolts, a protective layer (3) is laid on the outer end of the U-shaped support (11), a liner (10) is connected between the U-shaped support (11) and the tube body (7) by bolts, and a support pad (9) is connected between the liner (10) and the air duct by bolts, and a first ventilation hole (8) is provided at both upper and lower ends of the air duct to communicate with the interior of the adjacent drying box (12); Isolation strips (18) are connected to each other on both upper and lower sides of the two U-shaped supports (11) located between two adjacent isolation frames (5) by bolts. The upper and lower ends of the U-shaped supports (11) are detachably connected to the drying box (12). The front and rear ends of the drying box (12) are provided with fourth ventilation holes (16). The inner ends of the drying box (12) are provided with second ventilation holes (14). The outer ends of the drying box (12) are detachably connected to the cover plate (13). The outer surfaces of the cover plate (13) are provided with third ventilation holes (15).

2. A large stainless steel air duct fixing device according to claim 1, characterized in that: A plurality of grid plates (6) are arranged inside the tube body (7).

3. A large stainless steel air duct fixing device according to claim 1, characterized in that: A ventilation duct (17) flush with the adjacent drying box (12) is provided on both upper and lower sides of the cross section of the U-shaped support (11); the ventilation duct (17) is connected to the interior of the adjacent fourth ventilation hole (16); and the fourth ventilation hole (16) is connected to the interior of the adjacent drying box (12).

4. A large stainless steel air duct fixing device according to claim 1, characterized in that: The outer surface of the protective layer (3) is provided with a plurality of sleeve frames (1), and the four corners between the two sleeve frames (1) between any two adjacent isolation frames (5) are connected by connecting rods (2) in a detachable manner.

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