Highly airtight anticorrosive galvanized air pipe

Abstract

The utility model discloses a high airtight type anticorrosive galvanized air pipe relates to the field of air pipe, aims at solving the problem that traditional air pipe is easy to deflect and has insufficient stability. The structure includes air pipe body, plane flange and multiple bilateral fixed type angle code, and the angle code is arranged at the corner position of the air pipe body, and the internal angle is 90 DEG, and the plane flange is fixedly connected with the air pipe body simultaneously. The angle code contains flange side fixed part, air pipe side fixed part and corner covering part: the flange side fixed part is fastened through bolt and plane flange, the air pipe side fixed part is connected with the air pipe body through rivet, and the inner surface of corner covering part is fully attached with the outer surface of air pipe corner and forms seal. The application forms the cooperative constraint through bilateral fixation, effectively maintains the vertical angle of plane flange and air pipe body, improves the overall structural strength and anti -deformation ability, and strengthens airtightness and anticorrosive property simultaneously, and is suitable for ventilation, air conditioning and the system.

Description

Technical Field

[0001] This utility model relates to the field of air ducts, specifically to a high airtightness anti-corrosion galvanized air duct. Background Technology

[0002] In the long-term operation of ventilation, air conditioning, and air purification systems, the angular accuracy and overall stability of duct structures have always been key pain points affecting system performance. Traditional ducts have unavoidable technical defects in this regard. The corner connection structure design of traditional plate flange ducts has obvious shortcomings. Their corner brackets often use simple single-sided fixing or only shallow connection with the flange edge, which cannot form an effective coordinated constraint on the duct body and the flange. This structural defect directly leads to the duct being prone to deflection during production, warehousing, transportation, and on-site installation: during the workshop processing stage, the corners of the duct are prone to angular deviation due to welding stress or collisions during handling; during long-distance transportation, the continuous vibration caused by vehicle bumps will exacerbate the perpendicularity deviation between the flange and the duct body; and during installation, uneven stress on the duct can cause the overall structure to twist, and in severe cases, even the flange surface may tilt. Utility Model Content

[0003] In view of the above, the purpose of this utility model is to provide a high airtightness anti-corrosion galvanized air duct to address the problems of the prior art.

[0004] This solution includes a high airtightness anti-corrosion galvanized air duct, which also includes multiple double-sided fixed corner brackets, which are respectively set at the corner positions of the air duct body. The inner angle of each double-sided fixed corner bracket is 90°, and they are simultaneously fixedly connected between the flat flange and the air duct body. The double-sided fixed corner brackets form a cooperative constraint on the flat flange and the air duct body through double-sided fixing, maintaining the vertical angle between the flat flange and the air duct body.

[0005] Furthermore, the double-sided fixed corner bracket includes a flange-side fixing part that is bolted to the flat flange, a duct-side fixing part that is riveted to the duct body, and a corner-covering part that covers the corner of the duct body.

[0006] Furthermore, the flange side fixing part is provided with bolt holes, and the bolts pass through the bolt holes and the flat flange to achieve fastening.

[0007] Furthermore, the duct side fixing part is fixed to the duct body by rivets.

[0008] Furthermore, the inner surface of the corner portion is fully bonded to the outer surface of the corner of the duct body to form a sealed structure.

[0009] Furthermore, the planar flange is provided with flange connection holes.

[0010] Beneficial effects:

[0011] Significant anti-skewing effect: The inner angle of the double-sided fixed angle bracket is 90°. By fixing it to the flat flange and the duct body on both sides respectively, a synergistic constraint is formed, which effectively maintains the vertical angle between the flat flange and the duct body. This solves the problem of duct skewing caused by insufficient strength of traditional common plate flanges and ensures the angular accuracy of the duct.

[0012] High structural strength: The flange side fixing part is fastened to the flat flange with bolts, and the duct side fixing part is fixed to the duct body with rivets. The dual-sided force makes the overall structure of the duct more robust and less prone to deformation, while also enhancing the duct's resistance to damage during transportation and handling.

[0013] Excellent airtightness: The inner surface of the corner fitting is completely flush with the outer surface of the duct body corner, forming a tight sealing structure, effectively solving the air leakage problem at the corner of the duct and flange, and improving the overall airtightness; The flat flange has no groove, because the traditional plate flange has grooves on the surface, which are prone to air leakage. The corner bracket is fixed to the flange by hammering. Hammering will cause deformation of the flange and duct surface, zinc layer peeling off, reduced corrosion resistance, and reduced airtightness. Moreover, when two ducts are connected, there will be a sealing gasket in the middle. When bolted, the pressure of the flange surfaces on both sides is directly applied to the sealing gasket. Because the flange surface is flat and has no grooves, the compression is tighter, so the sealing is better. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the present application;

[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0016] Attached reference numerals: 1. Duct body; 2. Flat flange; 3. Flange connection hole; 4. Double-sided fixed corner bracket; 4-1. Flange side fixing part; 4-2. Duct side fixing part; 4-3. Corner wrapping part; 5. Bolt hole; 6. Rivet. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figures 1 to 2The illustration shows a high-airtightness, corrosion-resistant galvanized air duct, comprising a duct body 1, a flat flange 2, flange connection holes 3, double-sided fixing brackets 4, bolt holes 5, and rivets 6. The duct body 1 has a rectangular structure, and the flat flange 2 is located at the end of the duct body 1. The flat flange 2 has flange connection holes 3 for connection and fixing in this application.

[0019] There are eight double-sided fixed corner brackets 4, which are correspondingly set at the four corner positions at both ends of the duct body 1. The inner angle of each double-sided fixed corner bracket 4 is machined to 90°. This right-angle structure corrects the angle of the duct and ensures the perpendicularity accuracy between the duct body 1 and the flat flange 2. The double-sided fixed corner bracket 4 is integrally formed from the flange side fixing part 4-1, the duct side fixing part 4-2, and the corner wrapping part 4-3.

[0020] The flange-side fixing part 4-1 is provided with bolt holes 5. During installation, bolts are passed through bolt holes 5 and the corresponding through holes of the flat flange 2 to securely connect the flange-side fixing part 4-1 to the flat flange 2. Compared with traditional riveting and hammering methods, this bolt fixing method provides a more secure connection, is less prone to rivet detachment, and does not damage the galvanized layer of the flat flange 2, ensuring corrosion resistance. Simultaneously, bolt holes 5 can be used as auxiliary connection holes when connecting ducts to enhance connection strength.

[0021] The side fixing part 4-2 of the air duct is fixedly connected to the air duct body 1 by rivets 6. The rivets 6 are installed by press riveting process to avoid the deformation and pitting of the flange and air duct surface caused by traditional hammering, and to prevent the decline in anti-corrosion performance and air tightness caused by the peeling off of the galvanized layer.

[0022] The inner surface of the corner section 4-3 is completely fitted with the outer surface of the corner of the duct body 1, forming a tight sealing structure, which effectively solves the hidden danger of air leakage at the corner of the duct and flange and improves the overall air tightness.

[0023] In this embodiment, the double-sided fixed corner bracket 4 achieves double-sided force through the flange-side fixing part 4-1 and the duct-side fixing part 4-2, making the overall structure of the duct more robust and less prone to deformation; the 90° inner angle design, combined with the double-sided support, continuously maintains the perpendicular angle between the plane flange 2 and the duct body 1, completely solving the problem of traditional duct skewing.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-airtightness, corrosion-resistant, galvanized air duct, comprising a duct body (1) with a rectangular cross-section and a flat flange (2) disposed on the duct body (1), characterized in that, It also includes multiple double-sided fixed corner brackets (4), which are respectively set at the corner positions of the duct body (1). The inner angle of each double-sided fixed corner bracket (4) is 90°, and it is simultaneously fixedly connected between the flat flange (2) and the duct body (1). The double-sided fixed corner brackets (4) form a cooperative constraint on the flat flange (2) and the duct body (1) through double-sided fixing to maintain the vertical angle between the flat flange (2) and the duct body (1).

2. The high airtightness anti-corrosion galvanized air duct according to claim 1, characterized in that: The double-sided fixed corner bracket (4) includes a flange side fixing part (4-1) bolted to the flat flange (2), a duct side fixing part (4-2) riveted to the duct body (1), and a corner covering part (4-3) covering the corner of the duct body (1).

3. The high airtightness anti-corrosion galvanized air duct according to claim 2, characterized in that: The flange side fixing part (4-1) is provided with bolt holes (5), and the bolts pass through the bolt holes (5) and the flat flange (2) to achieve fastening.

4. The high airtightness anti-corrosion galvanized air duct according to claim 2, characterized in that: The side fixing part (4-2) of the air duct is fixed to the air duct body (1) by rivets (6).

5. A high airtightness anti-corrosion galvanized air duct according to claim 2, characterized in that: The inner surface of the corner portion (4-3) is fully bonded to the outer surface of the corner of the duct body (1) to form a sealed structure.

6. The high airtightness anti-corrosion galvanized air duct according to claim 1, characterized in that: The flat flange (2) is provided with flange connection holes (3).

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