Connecting structure of dustproof air pipe

Abstract

The utility model discloses a connecting structure of a dustproof air pipe, which comprises an air pipe main body, a flange, an extrusion mechanism and a sealing mechanism, the extrusion mechanism is used for connecting one end of the air pipe main body, and the sealing mechanism is used for hermetically connecting one end of the air pipe main body. According to the utility model, the mounting disc and the extrusion pipe are arranged between the two flanges and the air pipe main bodies, one end of the extrusion pipe is respectively inserted into the inner cavities of the two air pipe main bodies in a sliding manner, and one end of each air pipe main body extrudes and deforms the sealing block, so that the sealing block is inserted into the inner cavities of the air pipe main bodies in a sliding manner; the outer walls of one ends of the sealing blocks extrude the inner walls of the air pipe bodies, the tightening nuts are rotated to extrude the flanges and the mounting discs, the flanges and the mounting discs move to drive one ends of the two air pipe bodies to be close to each other through flanging extrusion between the flanges and the mounting discs, the outer walls of the extrusion pipes and the inner walls of the air pipe bodies are extruded, and the air pipe bodies are extruded. And the connection sealing performance of the air pipe main body is ensured.

Description

Technical Field

[0001] The utility model relates to the field of air duct installation, in particular to a connection structure of a dustproof air duct. Background Art

[0002] Housing construction projects are usually installed with various ducts such as air-conditioning supply and return air ducts, fresh air ducts, exhaust ducts, fire-fighting pressurized air supply ducts and smoke exhaust ducts as needed to transport air, smoke and dust.

[0003] When installing the pipeline, multiple dust-proof air ducts are spliced ​​together, and one end of two adjacent air ducts are fixedly connected. Usually, a flange structure is formed at one end of the air duct, and then the flange is used to extrude the flange position to fix the two air ducts at one end. The air duct flange has a difference in thickness and a dent phenomenon, which affects the sealing. A sealing ring is used to compensate for this and ensure the sealed connection between the air ducts. The sealing ring is easily damaged due to aging, which affects the sealing of the connection between the air ducts. Utility Model Content

[0004] The purpose of the utility model is to provide a connection structure of a dustproof air duct to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a connection structure of a dustproof air duct, comprising an air duct main body;

[0006] A flange, the flange being arranged at one end of the air duct body;

[0007] It also includes a squeezing mechanism, which is arranged at one end of the air duct body, and is used to form a flattening structure at one end of the air duct body and connect one end of the air duct body;

[0008] The sealing mechanism is arranged on the extrusion mechanism, and is used to form a closed structure on the extrusion mechanism and to seal and connect one end of the air duct body.

[0009] Preferably, the extrusion mechanism comprises:

[0010] A flange, the inner cavity of which is slidably connected with one end of the air duct body, and the position of the flange corresponds to the flange;

[0011] The mounting plate is arranged on one side of the flange, and the diameter of the mounting plate is the same as the diameter of the flange.

[0012] Preferably, the extrusion mechanism further comprises:

[0013] Mounting holes, the mounting holes are arranged in a circular array and are equidistantly arranged on the flange and the mounting plate;

[0014] A bolt, one end of which is slidably and interlacedly connected with the inner cavity of the mounting hole;

[0015] A nut is threadedly connected to one end of the bolt, and one end of the nut is pressed against the outer wall of the flange.

[0016] Preferably, the sealing mechanism comprises:

[0017] An extruded tube, one end of which is fixedly connected to one side of the mounting plate, and the other end of which is slidably connected to the inner cavity of one end of the air duct body;

[0018] A rubber pad is fixedly connected to the outer wall of the extruded tube, and the outer wall of the rubber pad is in contact with the inner wall of the air duct body.

[0019] Preferably, the sealing mechanism further comprises:

[0020] A sealing block, the sealing block is fixedly connected to the other end of the extruded tube, and the sealing block is arranged in a trumpet shape;

[0021] The sealing ring is fixedly connected to the outer wall of the sealing block, and the outer wall of the sealing ring is in contact with the inner wall of the air duct body.

[0022] Preferably, the extruded tube is arranged in a trumpet shape, the outer wall of the extruded tube is extruded against the inner wall of the air duct body, and the sealing block is made of elastic material.

[0023] Technical effects and advantages of the utility model:

[0024] The utility model utilizes a setting mode that matches flanges, mounting plates, bolts, nuts, extrusion tubes and sealing blocks. By arranging the mounting plates and the extrusion tube between the two flanges and the air duct main body, one end of the extrusion tube is slidably inserted into the inner cavities of the two air duct main bodies respectively, and one end of the air duct main body extrude and deform the sealing block, so that the sealing block slides and inserts into the inner cavity of the air duct main body. By utilizing the elastic effect of the sealing block, the sealing block rebounds, and the outer wall of one end of the sealing block is pressed against the inner wall of the air duct main body. Then, the bolts are sequentially passed through the inner cavities of the mounting holes on the two flanges and the mounting plates, and the nuts are rotated and tightened so that the nuts and nuts of the bolts are pressed against the flanges and the mounting plates. The flanges between the flanges and the mounting plates are pressed to ensure the flatness of the flanges. As the nuts are rotated and tightened, the flanges and the mounting plates are moved, driving one end of the two air duct main bodies to approach each other, so that the outer wall of the extrusion tube is pressed against the inner wall of the air duct main body, thereby ensuring the sealing of the connection of the air duct main bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0026] Figure 2 This is a schematic diagram of the structure of the installation plate of the utility model.

[0027] Figure 3 It is a schematic diagram of the side sectional structure of the flange of the utility model.

[0028] Figure 4 It is a side sectional structural schematic diagram of the installation plate of the utility model.

[0029] In the figure: 1. duct body; 2. flange; 3. extrusion mechanism; 31. flange; 32. mounting plate; 33. mounting hole; 34. bolt; 35. nut; 4. sealing mechanism; 41. extrusion tube; 42. rubber pad; 43. sealing block; 44. sealing ring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] The utility model provides Figure 1-4 The connection structure of a dust-proof air duct shown in the figure includes an air duct body 1, a flange 2, an extrusion mechanism 3 and a sealing mechanism 4. The air duct body 1 is arranged in a circular tube shape, and the flange 2 is arranged at one end of the air duct body 1. The flange 2 and the one end of the air duct body 1 are arranged as a whole, so that one end of the air duct body 1 is arranged in a T-shape, which is used to connect one end of two air duct bodies 1. The extrusion mechanism 3 is arranged at one end of the air duct body 1. The extrusion mechanism 3 is used to form a flattening structure at one end of the air duct body 1 and connect one end of the air duct body 1. The flanges 2 at the opposite ends of the two air duct bodies 1 are extruded by the extrusion mechanism 3 to ensure the flatness of the flanges 2. The sealing mechanism 4 is arranged on the extrusion mechanism 3. The sealing mechanism 4 is used to form a closed structure on the extrusion mechanism 3 and seal one end of the air duct body 1. The opposite ends of the two air duct bodies 1 are sealed by the sealing mechanism 4 to ensure the sealing of the air duct body 1.

[0032] Furthermore, the extrusion mechanism 3 includes a flange 31, a mounting plate 32, a mounting hole 33, a bolt 34 and a nut 35. The inner cavity of the flange 31 is slidably inserted and connected with one end of the air duct body 1. The position of the flange 31 corresponds to the position of the flange 2. By sliding the flange 31 into one end of the air duct body 1, one side of the flange 31 is fitted with the outer wall of the flange 2. One end of the two air duct bodies 1 is connected through the two flanges 31. The mounting plate 32 is arranged on one side of the flange 31. The mounting plate 32 is used to fix the extrusion tube 41. The diameter of the mounting plate 32 is the same as that of the flange 31. The flange 2 is arranged between the flange 31 and the mounting plate 32. The flange 31 and the mounting plate 32 are used to extrude the flange 2 to ensure the flatness of the flange 2 and improve the tightness of the connection end of the two air duct bodies 1. The mounting holes 33 are equidistantly arranged in a circular array on the flange 31 and the mounting plate 32. The mounting holes 33 are used to insert bolts 34. One end of the bolt 34 is slidably inserted and connected with the inner cavity of the mounting hole 33. The bolt 34 is sequentially passed through the inner cavity of the mounting holes 33 on the two flanges 31 and the mounting plate 32 to install and connect the flange 31. The nut 35 is threadedly connected with one end of the bolt 34. One end of the nut 35 is pressed against the outer wall of the flange 31. The flange 31 and the mounting plate 32 are arranged between the bolt 34 and the nut 35. The nut 35 is tightened by rotating one end of the bolt 34 so that the nut 35 and the nut of the bolt 34 squeeze the flange 31 and the mounting plate 32. The flange 31 and the mounting plate 32 are squeezed by the flange 2 between them to ensure the flatness of the flange 2.

[0033] Furthermore, the sealing mechanism 4 includes an extrusion tube 41, a rubber pad 42, a sealing block 43 and a sealing ring 44. One end of the extrusion tube 41 is fixedly connected to one side of the mounting plate 32, and the other end of the extrusion tube 41 is slidably inserted into the inner cavity of one end of the air duct main body 1. The two extrusion tubes 41 are respectively fixed on both sides of the mounting plate 32. By setting the mounting plate 32 between the two air duct main bodies 1 and the flange 31, the extrusion tubes 41 are slidably inserted into the inner cavity of the opposite end of the two air duct main bodies 1, and as the nut 35 is rotated and tightened, the flange 31 and the mounting plate 32 are moved, driving one end of the two air duct main bodies 1 to approach each other, so that the outer wall of the extrusion tube 41 is squeezed against the inner wall of the air duct main body 1 to ensure that the extrusion tube 41 and the air duct main body 1 are closely fitted. The rubber pad 42 is fixedly connected to the outer wall of the extrusion tube 41, and the outer wall of the rubber pad 42 is fitted with the inner wall of the air duct main body 1. The elastic effect of the rubber pad 42 is utilized to improve The sealing between the inner wall of the air duct main body 1 and the outer wall of the extruded tube 41, the sealing block 43 is fixedly connected to the other end of the extruded tube 41, and the sealing block 43 is arranged in a trumpet shape. The sealing block 43 can undergo a certain deformation. When one end of the extruded tube 41 slides and inserts into the inner cavity of the moving air duct main body 1, one end of the air duct main body 1 squeezes and deforms the sealing block 43, so that the sealing block 43 slides and inserts into the inner cavity of the air duct main body 1. By utilizing the elastic effect of the sealing block 43, the sealing block 43 rebounds, and the outer wall of one end of the sealing block 43 squeezes the inner wall of the air duct main body 1 to ensure the sealing. The sealing ring 44 is fixedly connected to the outer wall of the sealing block 43, and the outer wall of the sealing ring 44 fits with the inner wall of the air duct main body 1. By utilizing the elastic effect of the sealing ring 44, the sealing between the sealing block 43 and the inner wall of the air duct main body 1 is ensured. The extruded tube 41 is arranged in a trumpet shape, and the outer wall of the extruded tube 41 is squeezed against the inner wall of the air duct main body 1. The sealing block 43 is made of elastic material.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A dustproof air duct connection structure, comprising: Air duct body (1); A flange (2), wherein the flange (2) is arranged at one end of the air duct body (1); The invention is characterized in that it further comprises a squeezing mechanism (3), wherein the squeezing mechanism (3) is arranged at one end of the air duct body (1), and the squeezing mechanism (3) is used to form a flattening structure at one end of the air duct body (1) and to connect one end of the air duct body (1); A sealing mechanism (4), wherein the sealing mechanism (4) is arranged on the extrusion mechanism (3), and the sealing mechanism (4) is used to form a closed structure on the extrusion mechanism (3) and to seal and connect one end of the air duct body (1).

2. A dust-proof air duct connection structure according to claim 1, characterized in that: The extrusion mechanism (3) comprises: A flange (31), wherein the inner cavity of the flange (31) is slidably connected to one end of the air duct body (1), and the position of the flange (31) corresponds to that of the flange (2); A mounting plate (32) is arranged on one side of the flange (31), and the diameter of the mounting plate (32) is the same as the diameter of the flange (31).

3. The dustproof air duct connection structure according to claim 2, characterized in that: The extrusion mechanism (3) further comprises: Mounting holes (33), the mounting holes (33) being arranged in an annular array at equal distances on the flange (31) and the mounting plate (32); A bolt (34), one end of which is slidably inserted into and connected with the inner cavity of the mounting hole (33); A nut (35), wherein the nut (35) is threadedly connected to one end of the bolt (34), and one end of the nut (35) is pressed against the outer wall of the flange (31).

4. A dust-proof air duct connection structure according to claim 3, characterized in that: The sealing mechanism (4) comprises: An extruded tube (41), one end of the extruded tube (41) being fixedly connected to one side of the mounting plate (32), and the other end of the extruded tube (41) being slidably interlaced with the inner cavity of one end of the air duct body (1); A rubber pad (42), wherein the rubber pad (42) is fixedly connected to the outer wall of the extruded tube (41), and the outer wall of the rubber pad (42) is in contact with the inner wall of the air duct body (1).

5. A dust-proof air duct connection structure according to claim 4, characterized in that: The sealing mechanism (4) further comprises: A sealing block (43), the sealing block (43) being fixedly connected to the other end of the extrusion tube (41), and the sealing block (43) being arranged in a trumpet shape; A sealing ring (44), wherein the sealing ring (44) is fixedly connected to the outer wall of the sealing block (43), and the outer wall of the sealing ring (44) is in contact with the inner wall of the air duct body (1).

6. A dust-proof air duct connection structure according to claim 5, characterized in that: The extruded tube (41) is arranged in a trumpet shape, the outer wall of the extruded tube (41) is extruded against the inner wall of the air duct body (1), and the sealing block (43) is made of elastic material.

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