Steel plug-in flange for smoke prevention and exhaust air pipe

Abstract

The utility model discloses a steel plug-in flange for a smoke prevention and exhaust air pipe, and relates to the technical field of ventilation pipelines. The steel plug-in flange for the smoke prevention and exhaust air pipe comprises an air pipe and a sealing gasket, each insertion assembly comprises an insertion flange, the surface of the air pipe is fixedly connected with an air pipe connecting strip, an insertion strip is clamped between each insertion flange and every two corresponding insertion flanges, and the number of the insertion assemblies is two; the surfaces of the two corresponding inserting flanges are slidably connected with two inserting flange limiting frames, two bolts are in threaded connection with the interiors of the inserting flange limiting frames, each inserting flange limiting frame is fixed to the corresponding inserting flange through the bolt, the inserting flanges are connected with the air pipe in a clamped mode, and the air pipe connecting strips are used; the plug-in flange can be conveniently limited, dislocation between the plug-in flange and the air pipes under the action of external force is prevented, the space between the two air pipes is sealed through the sealing gasket, and the sealing effect of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation ducts, in particular to a steel plug-in flange for smoke prevention and exhaust air ducts. Background Art

[0002] An air duct is a duct system used for air transportation and distribution. According to the cross-sectional shape, air ducts can be divided into various types such as circular air ducts, rectangular air ducts, and oval air ducts. Among them, the circular air duct has the least resistance but the largest height dimension and is complex to manufacture. Since the ventilation ducts became popular, the corresponding materials and technologies for smoke prevention and exhaust air ducts have been constantly updated and changed.

[0003] The existing square metal air ducts are hermetically spliced using a flange structure. However, over time, the connection structure at the flange is prone to looseness, resulting in gaps between the flanges, which in turn affects the sealing performance of the entire air duct. Therefore, the utility model proposes a new solution. Summary of the Utility Model

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and provide a steel plug-in flange for smoke prevention and exhaust air ducts, which can solve the problem that the existing square metal air ducts are hermetically spliced using a flange structure, and over time, the connection structure at the flange is prone to looseness, resulting in gaps between the flanges, which in turn affects the sealing performance of the entire air duct.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: A steel plug-in flange for smoke prevention and exhaust air ducts, including an air duct and a sealing gasket;

[0006] A plug-in assembly is arranged on the air duct. The plug-in assembly includes a plug-in flange, the plug-in flange is clamped on the air duct, a duct connection strip is fixedly connected to the surface of the air duct, and the plug-in flange is slidably connected to the duct connection strip;

[0007] Both the plug-in flange and the duct connection strip are eight in number, and are symmetrically arranged on the outside of the air duct respectively. A plug-in strip is clamped between every two corresponding plug-in flanges, and the number of the plug-in assemblies is two;

[0008] Two plug-in flange limit frames are slidably connected to the surfaces of two corresponding plug-in flanges. Two bolts are threadedly connected inside the plug-in flange limit frames, and each plug-in flange limit frame is fixed to the corresponding plug-in flange by bolts.

[0009] Preferably, the number of the air ducts is two, and the sealing gasket is arranged between the two air ducts.

[0010] Preferably, two rivets are arranged inside each plug-in flange, and each plug-in flange is connected to the air duct by rivets.

[0011] Preferably, the insertion flange on the surface of the air duct is fixed to the insertion flange on the surface of another air duct through an insertion flange position-limiting frame and bolts.

[0012] Preferably, three through holes are provided on the surface of each insertion strip, and the inner and outer surfaces at the corners of each insertion strip are both arc-shaped.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The steel insertion flange for the smoke exhaust and prevention air duct of the present utility model is clamped to the air duct through the insertion flange, and the use of the air duct connection strip facilitates the limitation of the insertion flange, preventing the dislocation between the insertion flange and the air duct under the action of external force, and seals between the two air ducts through the gasket, improving the sealing effect of the device. The arrangement of the insertion flange position-limiting frame and bolts facilitates the limitation and fixation of the corresponding insertion flange, improving the stability of the connection between the air ducts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0016] Figure 1 is a schematic structural diagram of the steel insertion flange for the smoke exhaust and prevention air duct of the present utility model;

[0017] Figure 2 is a schematic diagram of the gasket of the present utility model;

[0018] Figure 3 is a schematic diagram of the insertion strip of the present utility model;

[0019] Figure 4 is a schematic diagram of the insertion flange position-limiting frame of the present utility model;

[0020] Figure 5 is a schematic diagram of the bolt of the present utility model.

[0021] Reference numerals: 1, air duct; 2, insertion flange; 3, insertion strip; 4, insertion flange position-limiting frame; 5, rivet; 6, gasket; 7, pattern; 8, through hole; 9, air duct connection strip; 10, bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be construed as a limitation on the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be understood that regarding the orientation description, for example, the orientation or positional relationship indicated by up, down, front, back, left, right, etc. 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. Therefore, it should not be construed as a limitation to the present utility model.

[0024] In the description of the present utility model, greater than, less than, exceeding, etc. are understood not to include the present number, and above, below, within, etc. are understood to include the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0025] 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.

[0026] Please refer to Figures 1-5 , the present utility model provides a technical solution: a steel plug-in flange for smoke prevention and exhaust ducts, including a duct 1, a gasket 6, and a plug-in assembly. The plug-in assembly is arranged on the duct 1. The plug-in assembly includes a plug-in flange 2, and the plug-in flange 2 is snap-connected to the duct 1. A duct connection strip 9 is fixedly connected to the surface of the duct 1, and the plug-in flange 2 is slidably connected to the duct connection strip 9. The number of the plug-in flanges 2 and the duct connection strips 9 is eight each, and they are symmetrically arranged on the outside of the duct 1 respectively. A plug-in strip 3 is snap-connected between every two corresponding plug-in flanges 2. The number of the plug-in assemblies is two. Two plug-in flange limit frames 4 are slidably connected to the surfaces of two corresponding plug-in flanges 2. Two bolts 10 are threadedly connected inside the plug-in flange limit frames 4. Each plug-in flange limit frame 4 is fixed to the corresponding plug-in flange 2 by the bolt 10. The number of the ducts 1 is two, and the gasket 6 is arranged between the two ducts 1.

[0027] By snap-connecting the plug-in flange 2 to the duct 1 and using the duct connection strip 9, it is convenient to limit the plug-in flange 2 to prevent the plug-in flange 2 from being displaced from the duct 1 under the action of external force. And the gasket 6 is used to seal between the two ducts 1 to improve the sealing effect of the device. Through the setting of the plug-in flange limit frames 4 and the bolts 10, it is convenient to limit and fix the corresponding plug-in flanges 2, improve the stability of the connection between the ducts 1, avoid the connection structure between the two ducts 1 from being easily loosened, resulting in a gap between the corresponding plug-in flanges 2, improve the sealing performance of the duct 1, and improve the installation efficiency of the device.

[0028] There are two rivets 5 provided inside each plug-in flange 2, and each plug-in flange 2 is connected to the air duct 1 through the rivets 5. The plug-in flanges 2 on the surface of the air duct 1 and the plug-in flanges 2 on the surface of another air duct 1 are fixed through the plug-in flange limit frame 4 and bolts 10.

[0029] The plug-in flange 2 is riveted to the air duct 1 through the rivets 5, which is convenient for fixing the position of the plug-in flange 2. Since the riveted connection has high strength, it can effectively prevent the air duct from loosening or falling off during use, thus ensuring the stability and safety of the air duct system.

[0030] The shape of the plug-in flange 2 is "L"-shaped, and the horizontal end in contact with the outer surface of the air duct 1 is arc-shaped. Patterns 7 are provided on the surface of each plug-in flange 2, and the thickness of the four corners of the gasket 6 is greater than the thickness of the four sides.

[0031] Through the arc-shaped design of the horizontal end of the plug-in flange 2, it is convenient for the quick connection between the plug-in flange 2 and the air duct 1, improves the installation efficiency of the plug-in flange 2, facilitates the extrusion and fixation of the plug-in flange 2 by the air duct connection strip 9 on the surface of the air duct 1, is convenient for the installation and fixation of the plug-in flange 2, and is convenient for improving the stability during the installation of the plug-in flange 2;

[0032] By providing patterns 7 on the surface of the plug-in flange 2, it is convenient to increase the surface roughness of the plug-in flange 2, is convenient for the sealing between the plug-in flange 2 and the gasket 6, and improves the sealing effect of the air duct 1.

[0033] Three through holes 8 are provided on the surface of each plug-in strip 3, and the inner and outer surfaces at the corners of each plug-in strip 3 are arc-shaped.

[0034] Through the setting of the through holes 8, it is convenient to connect some auxiliary equipment for pipes on the surface of the plug-in strip 3, provides more functions for the ventilation system, makes it more intelligent, safe and convenient, improves the convenience and practicality of the air duct 1, and at the same time is convenient for expanding the contact area between the plug-in strip 3 and the gasket 6, and improves the sealing effect of the air duct 1;

[0035] When the plug-in strip 3 is subjected to external force, it is convenient to release the stress, and the setting of the arc-shaped surface can avoid stress concentration and damage during daily use, and improves the service life of the plug-in strip 3.

[0036] The above has described the embodiments of the present invention in detail with reference to the drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. Steel plug-in flange for smoke exhaust duct, characterized by: It comprises an air duct (1) and a sealing gasket (6); A plug-in assembly, the plug-in assembly is arranged on the air duct (1), the plug-in assembly comprises a plug-in flange (2), the plug-in flange (2) is clamped on the air duct (1), a duct connecting strip (9) is fixedly connected to the surface of the air duct (1), and the plug-in flange (2) is slidably connected to the duct connecting strip (9); There are eight plug-in flanges (2) and eight air duct connection strips (9), which are symmetrically arranged on the outside of the air duct (1). A plug-in strip (3) is clamped between every two corresponding plug-in flanges (2). There are two plug-in components. Two corresponding plug-in flanges (2) are slidably connected to the surfaces of two plug-in flange limit frames (4), the internal threads of the plug-in flange limit frames (4) are connected to two bolts (10), and each plug-in flange limit frame (4) is fixed to the corresponding plug-in flange (2) via the bolts (10).

2. The steel plug-in flange for smoke exhaust duct according to claim 1 is characterized in that: There are two air ducts (1), and the sealing gasket (6) is arranged between the two air ducts (1).

3. The steel plug-in flange for smoke exhaust duct according to claim 1 is characterized in that: Two rivets (5) are arranged inside each of the plug-in flanges (2), and each of the plug-in flanges (2) is connected to the air duct (1) via the rivets (5).

4. The steel plug-in flange for smoke exhaust duct according to claim 1 is characterized in that: The plug-in flange (2) on the surface of the air duct (1) is fixed to the plug-in flange (2) on the surface of another air duct (1) via a plug-in flange limiting frame (4) and bolts (10).

5. The steel plug-in flange for smoke exhaust duct according to claim 1 is characterized in that: The surface of each of the plug-in strips (3) is provided with three through holes (8), and the inner and outer surfaces at the corners of each of the plug-in strips (3) are both arc-shaped.

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