Air pipe connecting structure

Abstract

The utility model relates to an air pipe connecting structure which comprises a first air pipe body, a second air pipe body and a first fastener, first common plate flanges are arranged at the two ends of the first air pipe body, and second common plate flanges are arranged at the two ends of the second air pipe body. The two opposite sides of the first common-plate flange and the second common-plate flange are fixed through first fasteners; the first fastening piece comprises a [-shaped fixing plate, one side of the first common plate flange and one side of the second common plate flange can be sleeved with the [-shaped fixing plate, an anti-skid layer is arranged in the [-shaped fixing plate, and the [-shaped fixing plate is clamped into the first common plate flange of the first air pipe body and the second common plate flange of the second air pipe body through the [-shaped fixing plate; the first air pipe main body and the second air pipe main body are connected together, due to the arrangement of the anti-skid layers, the [-shaped fixing plate does not slide relative to the first common plate flange and the second common plate flange, the two air pipes can be fixed without a plurality of bolts through nuts, and mounting and dismounting can be rapidly, simply and conveniently carried out.

Description

Technical Field

[0001] The utility model belongs to the technical field of air duct installation, and particularly relates to an air duct connection structure. Background Technique

[0002] The air ducts in buildings are divided into supply air ducts and smoke exhaust ducts, whose functions are to supply and exhaust air and exhaust smoke respectively; while the air duct is a pipeline system for air transportation and distribution. The existing air duct connection is mainly achieved by setting a common flange at the port of the air duct, and then fixing the four sides of the connected common flanges with multiple bolts, thus completing the connection of two air ducts; however, fixing two air ducts with multiple bolts one by one through nuts cannot be installed and disassembled quickly and simply. Content of the Utility Model

[0003] The purpose of the utility model is to design an air duct connection structure, which can realize the fixation of two air ducts without multiple bolts through nuts, so as to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is:

[0005] An air duct connection structure includes a first air duct main body, a second air duct main body and a first fastener. First common flanges are provided at both ends of the first air duct main body, second common flanges are provided at both ends of the second air duct main body, and the opposite sides of the first common flange and the second common flange are fixed through the first fastener; the first fastener includes a U-shaped fixing plate, the U-shaped fixing plate can cover one side of the first common flange and the second common flange, and an anti-slip layer is arranged inside the U-shaped fixing plate, and the anti-slip layer can be respectively attached to the surfaces of the first common flange and the second common flange.

[0006] Further, the two sides of the first common flange and the second common flange that avoid the first fastener are fixed through a second fastener.

[0007] Further, at least one through hole is provided on both sides of the first common flange and the second common flange that avoid the first fastener. The second fastener includes a bolt and a nut, and the bolt passes through the through holes of the first common flange and the second common flange and is threadedly connected with the nut.

[0008] Further, the anti-slip layer is made of rubber material.

[0009] Further, annular bumps are respectively installed at one ends inside the first air duct main body and the second air duct main body, and annular grooves are respectively installed at the other ends inside the first air duct main body and the second air duct main body. The annular bump of the first air duct main body cooperates with the annular groove inside the second air duct main body.

[0010] Further, an annular sealing ring is provided between the annular groove and the annular bump.

[0011] Compared with the prior art, the advantages of the present utility model are as follows: By clamping the U-shaped fixing plate into the first common plate flange of the first air duct main body and the second common plate flange of the second air duct main body, the first air duct main body and the second air duct main body are connected together. Due to the setting of the anti-slip layer, relative sliding between the U-shaped fixing plate and the first common plate flange and the second common plate flange will not occur, realizing that it is not necessary to use multiple bolts and nuts to fix the two air ducts, and the installation and disassembly can be carried out quickly and simply. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0014] Figure 2 It is a cross-sectional view of the present utility model;

[0015] Figure 3 It is Figure 2 an enlarged view of part A of

[0016] Wherein: 1. First air duct main body; 2. Second air duct main body; 3. First fastener; 4. First common plate flange; 5. Second common plate flange; 6. U-shaped fixing plate; 7. Anti-slip layer; 8. Second fastener; 9. Bolt; 10. Nut; 11. Annular bump; 12. Annular groove; 13. Annular sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] To make the objectives, technical solutions, and advantages of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present utility model belong to the scope protected by the present utility model.

[0018] The specific implementation manners of the present utility model will be described below in conjunction with the accompanying drawings:

[0019] As Figure 1-3 shown, a duct connection structure includes a first duct main body 1, a second duct main body 2 and a first fastener 3. First common flange 4 is provided at both ends of the first duct main body 1, and second common flange 5 is provided at both ends of the second duct main body 2. The opposite sides of the first common flange 4 and the second common flange 5 are fixed by the first fastener 3. More preferably, all four sides of the first common flange 4 and the second common flange 5 are fixed by the first fastener 3. The first fastener 3 includes a U-shaped fixing plate 6. The U-shaped fixing plate 6 can sleeve one side of the first common flange 4 and the second common flange 5. An anti-slip layer 7 is provided inside the U-shaped fixing plate 6. The anti-slip layer 7 can respectively fit with the surfaces of the first common flange 4 and the second common flange 5. The anti-slip layer 7 is made of rubber material. By clamping the U-shaped fixing plate 6 into the first common flange 4 of the first duct main body 1 and the second common flange 5 of the second duct main body 2, the first duct main body 1 and the second duct main body 2 are connected together. Due to the setting of the anti-slip layer 7, relative sliding between the U-shaped fixing plate 6 and the first common flange 4 and the second common flange 5 will not occur, realizing that it is not necessary to fix two ducts with multiple bolts 9 through nuts 10, and the installation and disassembly can be carried out quickly and simply.

[0020] In a more preferred implementation manner, the two sides of the first common flange 4 and the second common flange 5 avoiding the first fastener 3 are fixed by a second fastener 8. Two through holes are respectively provided on the two sides of the first common flange 4 and the second common flange 5 avoiding the first fastener 3. The second fastener 8 includes a bolt 9 and a nut 10. The bolt 9 passes through the through holes of the first common flange 4 and the second common flange 5 and is threadedly connected with the nut 10. By cooperating with the U-shaped fixing plate 6, only a small number of bolts 9 through nuts 10 can complete the fixation of the two ducts.

[0021] An annular convex block 11 is respectively installed at one end inside the first duct main body 1 and the second duct main body 2, and an annular groove 12 is respectively installed at the other end inside the first duct main body 1 and the second duct main body 2. The annular convex block 11 of the first duct main body 1 cooperates with the annular groove 12 inside the second duct main body 2. By clamping the annular convex block 11 of the first duct main body 1 into the annular groove 12 inside the second duct main body 2, connection offset will not occur when the two ducts are connected, thus affecting the subsequent fixation. An annular sealing ring 13 is provided between the annular groove 12 and the annular convex block 11, and the annular sealing ring 13 can improve the sealing performance of the connection between the two ducts.

[0022] Working principle of this embodiment: When connecting two air ducts, the annular bump 11 of the first air duct main body 1 is snapped into the annular groove 12 in the second air duct main body 2, and the U-shaped fixing plate 6 is snapped into the first common plate flange 4 of the first air duct main body 1 and the second common plate flange 5 of the second air duct main body 2. Then, the bolt 9 passes through the through holes of the first common plate flange 4 and the second common plate flange 5 and is threadedly connected to the nut 10. By cooperating with the U-shaped fixing plate 6, only a small number of bolts 9 can complete the fixation of the two air ducts through the nuts 10, and thus it works like this.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are only for the purpose of illustration.

[0024] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A duct connection structure, characterized in that: It includes a first air duct body (1), a second air duct body (2) and a first fastener (3). Both ends of the first air duct body (1) are provided with first common flange (4), and both ends of the second air duct body (2) are provided with second common flange (5). The opposite sides of the first common flange (4) and the second common flange (5) are fixed by the first fastener (3); the first fastener (3) includes a U-shaped fixing plate (6), and the U-shaped fixing plate (6) can cover one side of the first common flange (4) and the second common flange (5). An anti-slip layer (7) is provided inside the U-shaped fixing plate (6), and the anti-slip layer (7) can be respectively attached to the surfaces of the first common flange (4) and the second common flange (5).

2. The air duct connection structure according to claim 1, characterized in that: The sides of the first common flange (4) and the second common flange (5) that avoid the first fastener (3) are fixed by a second fastener (8).

3. The air duct connection structure according to claim 2, characterized in that: At least one through hole is provided on the sides of the first common flange (4) and the second common flange (5) that avoid the first fastener (3). The second fastener (8) includes a bolt (9) and a nut (10), and the bolt (9) passes through the through holes of the first common flange (4) and the second common flange (5) and is threadedly connected to the nut (10).

4. The air duct connection structure according to claim 1, characterized in that: The anti-slip layer (7) is made of rubber material.

5. The air duct connection structure according to claim 1, characterized in that: An annular protrusion (11) is respectively installed at one end inside the first air duct body (1) and the second air duct body (2), and an annular groove (12) is respectively installed at the other end inside the first air duct body (1) and the second air duct body (2). The annular protrusion (11) of the first air duct body (1) cooperates with the annular groove (12) inside the second air duct body (2).

6. The air duct connection structure according to claim 5, characterized in that: An annular sealing ring (13) is provided between the annular groove (12) and the annular protrusion (11).

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