Circular air pipe connection fixing structure

Abstract

The utility model discloses a circular air duct connection fixing structure, which relates to the technical field of building ventilation engineering, and comprises a first stainless steel air duct, and the periphery of the end part of the first stainless steel air duct is provided with an annular rolling texture; the pipe diameter of the second stainless steel air pipe is equal to that of the first stainless steel air pipe, and the end part of the second stainless steel air pipe is sleeved with the annular rolled texture part; a sealing rubber layer, a sealing rubber strip and a hoop. According to the circular air pipe connecting and fixing structure, the annular rolling texture is arranged at the end of the first stainless steel air pipe and connected with the second stainless steel air pipe, then a connecting gap between the first stainless steel air pipe and the second stainless steel air pipe is filled with the sealant layer, and welding sealing is not needed. The two stainless steel air pipes are tightly connected through the sealing and tightening effects of the sealing rubber strip and the hoop, the whole process does not need a welding procedure, the material use amount is effectively reduced, the construction cost is reduced, welding is not involved in the whole connecting process, construction can be conducted in a narrow space, and the applicability is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of building ventilation engineering, and particularly relates to a circular air duct connection and fixing structure. Background Art

[0002] CN202410403445.8 discloses a spliced air duct, including a pre-installed air duct and a connection component. Among them, connection flanges are provided at opposite ends of the pre-installed air duct; the connection component is configured as a tubular structure with open ends along a first direction, and the two open ends are respectively connected to the corresponding pre-installed air ducts via the connection flanges. The connection component includes connection parts, and at least two adjacent ends of the at least two connection parts are connected together so that the at least two connection parts enclose a tubular structure.

[0003] During the installation of traditional stainless steel circular air ducts, since welding technology needs to be used to fix the air duct interfaces in a narrow space, this leads to difficult on-site installation and increases materials and workload. In addition, on-site welding is costly and has low production efficiency, and it requires specialized equipment, materials, and technical personnel; impurities generated during the welding process may have a corrosive effect on the air duct and even cause defect problems. More importantly, the welding fixation method makes later maintenance and repair very difficult. Summary of the Utility Model

[0004] The utility model aims to at least solve the technical problems existing in the prior art, such as "inconvenient construction for connecting air ducts in narrow spaces, high cost, requiring special equipment, unstable welding quality, and difficult subsequent maintenance". For this purpose, the utility model provides a circular air duct connection and fixing structure, which reduces the usage amount of raw materials, avoids subsequent welding processes, has a simple and convenient connection method, reduces labor costs, and is applicable to pipeline connection work in various complex narrow spaces.

[0005] According to some embodiments of the utility model, the circular air duct connection and fixing structure includes:

[0006] A first stainless steel air duct, and a ring-shaped rolling texture is provided on the peripheral edge of the end of the first stainless steel air duct;

[0007] A second stainless steel air duct, having the same diameter as the first stainless steel air duct, and the end of the second stainless steel air duct is partially sleeved with the ring-shaped rolling texture;

[0008] A sealant layer is provided at the sleeved position of the ring-shaped rolling texture and the second stainless steel air duct;

[0009] A sealant strip is wrapped around the connection between the second stainless steel air duct and the first stainless steel air duct;

[0010] A clamp is sleeved on the surface of the sealing strip, and the clamp is used to tighten and compress the sealing strip.

[0011] According to some embodiments of the present invention, the diameter of the annular rolling texture is smaller than the pipe diameter of the second stainless steel air duct.

[0012] According to some embodiments of the present invention, the thickness of the annular rolling texture is 2 mm, and it protrudes from the outer surface of the first stainless steel air duct.

[0013] According to some embodiments of the present invention, the width of the annular rolling texture is 9 mm to 11 mm.

[0014] According to some embodiments of the present invention, the annular rolling texture adopts any one of a gear-shaped texture, a grid-shaped texture or a stripe-shaped texture.

[0015] According to some embodiments of the present invention, the sealing adhesive layer is coated on the surface of the annular rolling texture.

[0016] According to some embodiments of the present invention, the sealing strip wraps the overlapping connection area of the second stainless steel air duct and the annular rolling texture.

[0017] According to some embodiments of the present invention, the clamp is sleeved at the position corresponding to the annular rolling texture and is located in the middle of the annular rolling texture.

[0018] According to some embodiments of the present invention, the connection part of the first stainless steel air duct and the second stainless steel air duct is, from inside to outside, the wall of the first stainless steel air duct, the annular rolling texture, the sealing adhesive layer, the wall of the second stainless steel air duct, the sealing strip and the clamp.

[0019] According to some embodiments of the present invention, the clamp is locked by bolts, and the bolts are used to tighten the clamp.

[0020] The circular air duct connection and fixing structure according to some embodiments of the present invention has at least the following beneficial effects: the annular rolling texture is arranged at the end of the first stainless steel air duct, and after being connected to the second stainless steel air duct, the connection gap between the two is filled by the sealing adhesive layer without welding for sealing. Then, through the sealing and tightening effects of the sealing strip and the clamp, the two stainless steel air ducts are tightly connected. The whole process does not require a welding process, effectively reducing the material usage and construction cost. And the whole connection process does not involve welding, and it can be constructed in a narrow space, with a wider applicability.

[0021] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0022] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, where:

[0023] Figure 1 is an exploded schematic view of the circular air duct connection and fixing structure according to an embodiment of the present utility model;

[0024] Figure 2 is a connection schematic view of the circular air duct connection and fixing structure according to an embodiment of the present utility model.

[0025] Reference Signs:

[0026] The first stainless steel air duct 100, the annular rolling texture 110, the sealant layer 120, the second stainless steel air duct 200, the sealant strip 300, the clamp 400, the bolt 410. Detailed Embodiment

[0027] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, top, bottom, etc., which relate to the orientation description, is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0029] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more, and understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0030] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0031] Next, refer to Figure 1 - Figure 2Describe the circular air duct connection and fixing structure according to the embodiments of the present utility model.

[0032] As Figure 1 - Figure 2 shown, the circular air duct connection and fixing structure includes a first stainless steel air duct 100, a second stainless steel air duct 200, an annular rolling texture 110, a sealant layer 120, a sealant strip 300, and a clamp 400. The annular rolling texture 110 can be provided on the first stainless steel air duct 100 or the second stainless steel air duct 200. There is no limitation on the first stainless steel air duct 100 and the second stainless steel air duct 200 in this embodiment. Their structures are equal, and the only difference is that one of the stainless steel air ducts is provided with the annular rolling texture 110. In this embodiment, the first stainless steel air duct 100 is provided with the annular rolling texture 110 for illustration.

[0033] Specifically, the peripheral edge of the end of the first stainless steel air duct 100 is provided with the annular rolling texture 110, and the annular rolling texture 110 is formed by tool rolling. The diameter of the second stainless steel air duct 200 is equal to that of the first stainless steel air duct 100, and the end of the second stainless steel air duct 200 is partially sleeved with the annular rolling texture 110. Since the end of the first stainless steel air duct 100 is rolled to form the annular rolling texture 110, the diameter of its end is smaller than the diameter of the second stainless steel air duct 200, enabling the first stainless steel air duct 100 and the second stainless steel air duct 200 to be inserted into each other.

[0034] During the actual connection process, when connecting the pipes on-site, just insert the end with the annular rolling texture 110 into the port of the other section of the stainless steel air duct according to the air flow direction.

[0035] The sealant layer 120 is provided at the sleeved position of the annular rolling texture 110 and the second stainless steel air duct 200, and is used to fill the connection gap between the first stainless steel air duct 100 and the second stainless steel air duct 200. The annular rolling texture 110 can increase the surface area of the connection end of the stainless steel air duct, thereby making the contact area between the air duct surface and the sealant layer 120 larger and improving the sealing performance of the sealant layer 120.

[0036] The sealant strip 300 is wrapped around the connection of the second stainless steel air duct 200 and the first stainless steel air duct 100. The clamp 400 is sleeved on the surface of the sealant strip 300, and the clamp 400 is used to tighten and compact the sealant strip 300. The outer periphery of the two stainless steel air ducts is further tightened and fixed at the connection position of the two air ducts through the sealant strip 300 and the clamp 400, achieving the secondary sealing and fastening effect.

[0037] The circular duct connection and fixing structure of this embodiment can overcome the problems of insufficient construction space and low welding quality in a narrow environment. The welding process is eliminated to reduce labor costs and material costs. It is convenient for later repair and dismantling, which is convenient for later maintenance. It effectively solves the dilemma of welding process in a narrow space and changes to socket fixing, which meets the minimum requirements of construction space, i.e. installation space. It shows significant convenience during transportation, maintenance and installation, thereby greatly improving construction efficiency.

[0038] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the diameter of the annular rolling texture 110 is smaller than the diameter of the second stainless steel air duct 200 .

[0039] Specifically, after the annular rolled texture 110 is formed, the diameter of the corresponding end portion is smaller than the original diameter of the stainless steel air duct, so that one end of the annular rolled texture 110 can be inserted into one end of another stainless steel air duct.

[0040] Furthermore, if Figure 1 As shown, the thickness of the annular rolling texture 110 is 2 mm, and it is protruded from the outer surface of the first stainless steel air duct 100. Specifically, the annular rolling texture 110 is integrally formed with the stainless steel air duct, which effectively reduces the processing steps of the connection port.

[0041] In some embodiments of the present invention, Figure 1 As shown, the width of the annular rolling texture 110 is 9 mm to 11 mm. Specifically, in this embodiment, in order to enable the first stainless steel air duct 100 and the second stainless steel air duct 200 to be connected and fastened, the width of the annular rolling texture 110 is 10.5 mm, so that the connection area of ​​the two stainless steel air ducts is larger, which is conducive to the sealing glue layer 120 bonding to the pipe wall of the stainless steel air duct.

[0042] In some embodiments of the present invention, Figure 1 As shown, the annular rolling texture 110 adopts any one of a gear-shaped texture, a lattice-shaped texture or a stripe-shaped texture. Specifically, in this embodiment, the annular rolling texture 110 is a gear-shaped texture. The utility model does not elaborate on the styles of the annular rolling texture 110 one by one. It should be understood that without departing from the basic concept of the utility model, the styles of the annular rolling texture 110 can be flexibly changed, which should be regarded as within the protection scope defined by the utility model.

[0043] In some embodiments of the present invention, the sealant layer 120 is coated on the surface of the annular rolling texture 110 and is mainly used to bond the walls of two stainless steel air ducts.

[0044] In some embodiments of the present invention, Figure 1 and Figure 2As shown, the sealing strip 300 wraps the overlapping connection area of the second stainless steel air duct 200 and the annular rolling texture 110. Specifically, the sealing strip 300 winds around the connection of the two stainless steel air ducts for secondary sealing, which can further improve the sealing performance of the pipeline connection.

[0045] Furthermore, as Figure 1 and Figure 2 shown, the clamp 400 is sleeved at the position corresponding to the annular rolling texture 110 and is located in the middle of the annular rolling texture 110. The tightening force of the clamp 400 acts on the middle part of the connection, effectively reducing the lateral stress. Wind a heat-resistant sealing glue at the interface, and tighten the clamp 400 with the stainless steel air duct to compact the sealing strip 300 to complete the secondary sealing and fastening at the interface.

[0046] In some embodiments of the present utility model, the connection between the first stainless steel air duct 100 and the second stainless steel air duct 200 from the inside to the outside is successively the wall of the first stainless steel air duct 100, the annular rolling texture 110, the sealing layer 120, the wall of the second stainless steel air duct 200, the sealing strip 300, and the clamp 400. Secondary sealing is formed to achieve the purpose of fastening and anti-seepage.

[0047] In some embodiments of the present utility model, as Figure 1 and Figure 2 shown, the clamp 400 is locked by bolts 410, and the bolts 410 are used to tighten the clamp 400. Specifically, the clamp 400 is a split type. After the clamp 400 is sleeved at the connection, the tightening force of the clamp 400 acting on the connection is continuously increased by locking with bolts 410.

[0048] When the circular air duct connection and fixing structure of the present utility model is used, first, apply a sufficient amount of the sealing layer 120 on the rolling end of the stainless steel air duct, and then insert it into the fixed stainless steel air duct. After adjusting the position and ensuring the fixation is completed, wrap the sealing strip 300 at the interface and use the clamp 400 for fixation. Finally, tighten the clamp 400 through the bolts 410 to achieve the effect of secondary sealing, ensuring the firmness, sealing performance, and corrosion resistance of the connection.

[0049] The advantages are mainly reflected in the following aspects: 1. The processing process is simple and fast, reducing the usage amount of raw materials and further reducing the processing cost. 2. During the installation process, complex welding procedures are omitted, not only reducing the construction risk but also significantly reducing the generation of toxic substances, meeting the requirements of energy conservation and environmental protection. 3. The installation operation is simple and easy. Most of the preparatory work can be completed outside the narrow space, effectively improving the construction work efficiency and reducing the labor cost. 4. The requirement for the construction space is extremely low, successfully solving the problem that traditional welding is difficult to operate in a narrow space, and meeting the minimum construction and installation space requirements through the socket and fixing method.

[0050] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0051] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A circular air duct connection and fixing structure, characterized in that: include: A first stainless steel air duct (100), wherein the periphery of the end of the first stainless steel air duct (100) is provided with an annular rolling texture (110); A second stainless steel air duct (200) having a diameter equal to that of the first stainless steel air duct (100), wherein an end of the second stainless steel air duct (200) is partially sleeved with the annular rolled texture (110); A sealant layer (120) is disposed at a sleeve connection position between the annular rolled texture (110) and the second stainless steel air duct (200); A sealing strip (300) wrapped around the connection between the second stainless steel air duct (200) and the first stainless steel air duct (100); A clamp (400), the clamp (400) is sleeved on the surface of the sealing strip (300), and the clamp (400) is used to tighten and compact the sealing strip (300).

2. The circular air duct connection and fixing structure according to claim 1, characterized in that: The diameter of the annular rolling texture (110) is smaller than the diameter of the second stainless steel air duct (200).

3. The circular air duct connection and fixing structure according to claim 1, characterized in that: The annular rolled texture (110) has a thickness of 2 mm and is arranged protruding from the outer surface of the first stainless steel air duct (100).

4. The circular air duct connection and fixing structure according to claim 1, characterized in that: The width of the annular rolling texture (110) is 9 mm to 11 mm.

5. The circular air duct connection and fixing structure according to any one of claims 1 to 4, characterized in that: The annular rolling texture (110) is any one of a gear-shaped texture, a lattice-shaped texture or a stripe-shaped texture.

6. The circular air duct connection and fixing structure according to claim 1, characterized in that: The sealant layer (120) is coated on the surface of the annular rolled texture (110).

7. The circular air duct connection and fixing structure according to claim 1, characterized in that: The sealing strip (300) wraps the overlapping connection area between the second stainless steel air duct (200) and the annular rolled texture (110).

8. The circular air duct connection and fixing structure according to claim 7, characterized in that: The clamp (400) is sleeved at a position corresponding to the annular rolling texture (110) and is located in the middle of the annular rolling texture (110).

9. The circular air duct connection and fixing structure according to claim 1, characterized in that: The connection between the first stainless steel air duct (100) and the second stainless steel air duct (200) is composed of, from inside to outside, the tube wall of the first stainless steel air duct (100), the annular rolled texture (110), the sealant layer (120), the tube wall of the second stainless steel air duct (200), the sealant strip (300) and the clamp (400).

10. The circular air duct connection and fixing structure according to claim 9, characterized in that: The clamp (400) is locked by a bolt (410), and the bolt (410) is used to tighten the clamp (400).

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