Flexible composite air pipe zipper connection sealing device and method

Abstract

The invention relates to a flexible composite air pipe zipper connection sealing device and method, the flexible composite air pipe zipper connection sealing device comprises an outer cover body, an inner cover body and a limiting mechanism, and a through hole is formed in the outer cover body; the inner cover body and the outer cover body are oppositely arranged; the limiting mechanism comprises a connecting rod and a limiting piece, and one end of the connecting rod movably penetrates through the through hole and is connected to the inner cover body; the limiting piece is located on the connecting rod and used for abutting against the outer cover body so that the outer cover body and the inner cover body can be clamped. According to the application, the problems of high difficulty, low efficiency and uncontrollable quality in the pore sealing and on-site coating construction of zipper connection starting and ending points in the prior art can be solved.

Description

Technical Field

[0001] This application relates to the technical field of flexible air duct insulation, and particularly to a flexible composite air duct zipper connection sealing device and method. Background Art

[0002] Existing flexible composite air ducts are produced in a factory-standardized manner, and the pipe joining and connection construction are carried out by means of zipper connection at the engineering construction site. As the central air-conditioning ventilation duct, the airtightness of the air duct will greatly affect the air supply / return effect and energy consumption of the central air-conditioning system.

[0003] There are mainly three air leakage points in the flexible composite air duct. One is the air leakage at the sewing needle holes, the second is the air leakage at the zipper teeth and the tape gaps, and the third is the air leakage at the pores at the start and end points of the zipper connection.

[0004] At present, there are relatively mature sealing methods for the air leakage at the sewing needle holes, the zipper teeth and the tape gaps. However, it is more difficult to deal with the air leakage at the pores at the start and end points of the zipper connection. Since the zipper connection is completed at the construction site, the most commonly used sealing method at present is to apply sealant to the pores at the start and end points of the zipper connection at the engineering construction site, and completely block the pores at the start and end points of the zipper connection with the sealant.

[0005] Although this technology can seal the pores at the start and end points of the zipper connection, there are still some problems. For example, because sealant needs to be applied on site, the on-site application construction is difficult, inefficient, and the quality is uncontrollable; the on-site glue application and sealing operation are not standardized, affecting the customer experience; the air duct cannot be disassembled after the glue is applied for sealing, and it is difficult to maintain in the later stage. Summary of the Invention

[0006] The embodiments of this application provide a flexible composite air duct zipper connection sealing device and method to solve the problems in the related technology that for the sealing of the pores at the start and end points of the zipper connection, the on-site application construction is difficult, inefficient, and the quality is uncontrollable.

[0007] In a first aspect, a flexible composite air duct zipper connection sealing device is provided, which includes:

[0008] An outer cover body, which is provided with a through hole;

[0009] An inner cover body, which is arranged opposite to the outer cover body;

[0010] A limiting mechanism, which includes a connecting rod and a limiting member. One end of the connecting rod movably passes through the through hole and is connected to the inner cover body; the limiting member is located on the connecting rod and is used to abut against the outer cover body so as to clamp the outer cover body and the inner cover body.

[0011] In some embodiments, the connecting rod is screwed to the inner cover body;

[0012] The limiting member is fixed to the connecting rod.

[0013] In some embodiments, an internal threaded hole is provided on the inner cover body, an external thread is provided on the outer surface of the connecting rod, and the connecting rod is screwed into the internal threaded hole through the external thread.

[0014] In some embodiments, a threaded post is provided on the inner cover body, and the connecting rod is screwed to the threaded post.

[0015] In some embodiments, an internal threaded hole is provided in the threaded post, an external thread is provided on the outer surface of the connecting rod, and the connecting rod is screwed into the internal threaded hole through the external thread;

[0016] Alternatively, an external thread is provided on the outer surface of the threaded post, an internal threaded hole is provided in the connecting rod, and the threaded post is screwed into the internal threaded hole through the external thread.

[0017] In some embodiments, the connecting rod is fixed to the inner cover body;

[0018] The limiting member is screwed onto the connecting rod.

[0019] In some embodiments, there are a plurality of limiting members, which are installed on the connecting rod at intervals along the length direction of the connecting rod;

[0020] The limiting member adopts an elastic snap button adapted to the inner diameter of the through hole;

[0021] The limiting member is configured to pass through the through hole under the action of a pressing force or a pulling force greater than the designed external force.

[0022] In some embodiments, a sealing member is provided on the outer cover body and / or the inner cover body.

[0023] In some embodiments, the shape of the outer cover body and / or the inner cover body is circular, semi-circular, rectangular or bowl-shaped;

[0024] And / or, reinforcing ribs are provided on the outer cover body and / or the inner cover body;

[0025] And / or, the material of the outer cover body and / or the inner cover body is plastic or metal.

[0026] In a second aspect, a flexible composite air duct zipper connection sealing method is provided, which includes:

[0027] Providing a flexible composite air duct zipper connection sealing device as described in any one of the above;

[0028] Placing the inner cover body inside the gap at the starting and ending points of the flexible composite air duct zipper connection;

[0029] Place the outer cover outside the gap at the starting and ending points of the zipper connection of the flexible composite air duct, and make the connecting rod penetrate through the gap at the starting and ending points of the zipper connection of the flexible composite air duct;

[0030] Use a limiting member to abut against the outer cover to clamp the outer cover and the inner cover.

[0031] The beneficial effects brought by the technical solution provided by this application include:

[0032] The embodiment of this application provides a sealing device and method for the zipper connection of a flexible composite air duct. Compared with the existing scheme of applying sealant, in this application, the outer cover is limited by abutting against the outer cover with a limiting member, so as to clamp and seal the outer cover and the inner cover. The construction is simple and the sealing effect is good. By adjusting the magnitude of the force applied by the limiting member to abut and limit the outer cover, the sealing quality can be controlled.

[0033] This application can be operated in reverse to release the abutting limit of the limiting member on the outer cover, so that the outer cover and the inner cover are separated from each other, and then the sealing device can be removed, making the air duct detachable and convenient for later maintenance. Moreover, the sealing device can be reused. Description of the Drawings

[0034] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0035] Figure 1 Schematic diagram of the sealing device for the zipper connection of the flexible composite air duct provided by the embodiment of this application;

[0036] Figure 2 Schematic diagram of the sealing device for the zipper connection of the flexible composite air duct provided by another embodiment of this application.

[0037] In the figure: 1. Outer cover; 11. Through hole; 2. Inner cover; 21. Threaded post; 3. Connecting rod; 4. Limiting member; 5. Sealing member; 6. Reinforcing rib. Detailed Embodiments

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts fall within the scope of protection of this application.

[0039] See also Figure 1 As shown, an embodiment of the present application provides a flexible composite air duct zipper connection and sealing device, which includes an outer cover body 1, an inner cover body 2 and a limiting mechanism, wherein the outer cover body 1 and the inner cover body 2 are arranged relative to each other, a through hole 11 is opened at the center position of the outer cover body 1, and the limiting mechanism includes a connecting rod 3 and a limiting member 4, wherein one end of the connecting rod 3 movably passes through the through hole 11 and is connected to the center position of the inner cover body 2, and the outer cover body 1 can adjust its position on the connecting rod 3; the limiting member 4 is located on the connecting rod 3 and is used to abut against the outer cover body 1 so that the outer cover body 1 and the inner cover body 2 are clamped, and the abutment and limitation by the limiting member 4 is realized, thereby achieving the sealing between the outer cover body 1 and the inner cover body 2.

[0040] When the sealing device provided in the present embodiment is used, the inner cover body 2 is placed inside the hole at the starting and ending points of the zipper connection of the flexible composite air duct, and the outer cover body 1 is placed outside the hole at the starting and ending points of the zipper connection of the flexible composite air duct, and the connecting rod 3 is passed through the hole at the starting and ending points of the zipper connection of the flexible composite air duct, and the outer cover body 1 is abutted by the limiter 4 to limit the outer cover body 1, so that the outer cover body 1 and the inner cover body 2 clamp the flexible composite air duct from both sides of the air duct at the starting and ending points of the zipper connection to ensure that there is no air leakage at the edge of the cover body, and the hole at the starting and ending points of the zipper connection is completely blocked to prevent the high-pressure airflow in the flexible composite air duct from flowing out through the hole at the starting and ending points of the zipper connection.

[0041] Compared with the existing scheme of applying sealant, the present application uses a limiter to abut the outer cover body 1 to limit the outer cover body 1, so that the outer cover body 1 and the inner cover body 2 are clamped and sealed to each other. The construction is simple and the sealing effect is good. By adjusting the size of the force applied by the limiter 4 to the outer cover body 1 to limit the position, the sealing quality can be controlled.

[0042] It can be understood that the outer cover body 1 and the inner cover body 2 provided in the present application can completely cover the pores at the starting and ending points of the zipper connection, thereby effectively blocking the pores at the starting and ending points of the zipper connection.

[0043] In order to achieve the abutment and limiting of the outer cover 1 by the limiting member 4, and to achieve the clamping and sealing between the outer cover 1 and the inner cover 2, the present application provides a variety of feasible solutions, for example, the following are exemplary:

[0044] (1) The present application can indirectly drive the outer cover body 1 to move along the length direction of the connecting rod 3 through external force to adjust the distance between the outer cover body 1 and the inner cover body 2, thereby making the outer cover body 1 and the inner cover body 2 approach each other until they are clamped and sealed, or move away from each other until they are separated.

[0045] (1-1) The connecting rod 3 is screwed onto the inner cover body 2, and the limiting member 4 is fixed to the connecting rod 3, such that the limiting mechanism is like a screw or a bolt, the limiting member 4 forms the head of the screw or the bolt, and the connecting rod 3 forms the screw rod of the screw or the bolt.

[0046] As Figure 1 shown, by applying torque to the limiting member 4, the connecting rod 3 can be continuously inserted into the inner cover body 2. By adjusting the torque applied to the limiting member 4 to adjust the distance between the limiting member 4 and the inner cover body 2, the distance between the outer cover body 1 and the inner cover body 2 can be adjusted, and finally, the outer cover body 1 and the inner cover body 2 can be clamped and sealed with each other or moved away from each other until they are separated.

[0047] As an example, an internal threaded hole is provided on the inner cover body 2, an external thread is provided on the outer surface of the connecting rod 3, and the connecting rod 3 is screwed into the internal threaded hole through the external thread. Generally, the inner cover body 2 is relatively thin, so through dimensional optimization design, the internal threaded hole can penetrate through the inner cover body 2, such that the connecting rod 3 can rotate until it passes through the inner cover body 2.

[0048] As another example, referring to Figure 1 shown, a threaded post 21 is provided on the inner cover body 2, and the connecting rod 3 is screwed to the threaded post 21. By providing the threaded post 21, the connection strength between the connecting rod 3 and the inner cover body 2 can be enhanced.

[0049] For example, the threaded post 21 is provided with an internal threaded hole, the depth of the internal threaded hole can be determined according to actual needs, an external thread is provided on the outer surface of the connecting rod 3, and the connecting rod 3 is screwed into the internal threaded hole through the external thread. By applying torque to the limiting member 4, the connecting rod 3 can be screwed into the internal threaded hole, and the greater the number of turns of torque applied, the greater the depth of the connecting rod 3 inserted into the internal threaded hole, thereby pressing against the outer cover body 1, such that the distance between the outer cover body 1 and the inner cover body 2 becomes smaller, achieving distance adjustment. It can be understood that if the air duct needs to be disassembled, the limiting member 4 can be torqued in the reverse direction. Additionally, the internal threaded hole can be a blind hole that does not penetrate through the inner cover body 2, or the internal threaded hole can penetrate through the inner cover body 2.

[0050] For another example, an external thread is provided on the outer surface of the threaded post 21, an internal threaded hole is provided on the connecting rod 3, and the threaded post 21 is screwed into the internal threaded hole through the external thread. The difference between this embodiment and the foregoing solution is that the positions of the external thread and the internal threaded hole are swapped, and the principle is similar, so it will not be elaborated here.

[0051] (1-2) The connecting rod 3 is fixed to the inner cover body 2, and the limiting member 4 is screwed onto the connecting rod 3, such that the limiting mechanism is like a screw + nut combination, the limiting member 4 forms a nut, and the connecting rod 3 forms a screw rod.

[0052] Specifically, the aperture diameter of the through hole 11 is larger than the outer diameter of the connecting rod 3. Specifically, it is only necessary that the aperture diameter of the through hole 11 is slightly larger than the outer diameter of the connecting rod 3 to ensure that the outer cover body 1 can move along the axial direction of the connecting rod 3. An external thread is provided on the outer surface of the connecting rod 3, and the limiting member 4 is screwed onto the external thread of the connecting rod 3.

[0053] In this example, the limiting member 4 functions as a nut. By screwing the limiting member 4, the outer cover body 1 is driven to move along the axial direction of the connecting rod 3, thereby adjusting the distance between the outer cover body 1 and the inner cover body 2. It can be understood that if the air duct needs to be disassembled, the limiting member 4 can be screwed in the reverse direction, and then the outer cover body 1 can be pulled outwards to release the clamping of the air duct.

[0054] (2) In the present application, the outer cover body 1 can be directly driven by an external force to move along the length direction of the connecting rod 3 to adjust the distance between the outer cover body 1 and the inner cover body 2, so that the outer cover body 1 and the inner cover body 2 approach each other until they are clamped and sealed or move away from each other until they are separated.

[0055] As an example, refer to Figure 2 As shown, there are multiple limiting members 4, and they are installed on the connecting rod 3 at intervals along the length direction of the connecting rod 3. The limiting member 4 adopts an elastic snap button adapted to the inner diameter of the through hole 11, and the elastic snap button is circular in a plane perpendicular to the axial direction of the connecting rod 3. The limiting member 4 is configured to pass through the through hole 11 under the action of a pressing force or a pulling force greater than the designed external force.

[0056] In this example, the limiting member 4 cooperates with the outer cover body 1 having the through hole 11 to form a snap button structure, and the snap - fit or separation between the limiting member 4 and the outer cover body 1 is realized by pressing or pulling.

[0057] Specifically, the magnitude of the designed external force for driving the limiting member 4 to pass through the through hole 11 can be designed in advance. By applying a pressing force, the outer cover body 1 is driven to move towards the inner cover body 2. When the applied pressing force is greater than the designed external force, the outer cover body 1 will pass downward through a limiting member 4 and move one grid towards the inner cover body 2. Continue to press downward until the outer cover body 1 is clamped and snap - fitted on the inner cover body 2. At this time, the last limiting member 4 passed by the outer cover body 1 will resist and limit the outer cover body 1 to keep the outer cover body 1 and the inner cover body 2 clamped and sealed. When disassembly is required, apply a pulling force greater than the designed external force and operate in the reverse direction to separate the outer cover body 1 from the inner cover body 2 and release the clamping of the air duct.

[0058] It can be seen that the present application can also be operated in reverse to release the abutting limit of the limiting member on the outer cover body, so that the outer cover body 1 and the inner cover body 2 move away from each other, and then the sealing device can be removed, making the air duct detachable, facilitating later maintenance, and the sealing device can be reused.

[0059] In order to further improve the sealing effect, completely seal the pores at the starting and ending points of the zipper connection, and prevent the high-pressure air flow in the pipe from flowing out through the pores at the starting and ending points of the zipper connection, a sealing member 5 is provided on the outer cover body 1 and / or the inner cover body 2. By using the sealing member 5, the sealing effect can be enhanced.

[0060] Among them, the material of the sealing member 5 is silicone, rubber, or other existing flexible sealing materials.

[0061] Furthermore, the shape of the outer cover body 1 and / or the inner cover body 2 is circular, semi-circular, rectangular, or bowl-shaped.

[0062] For example, the shapes of the outer cover body 1 and the inner cover body 2 are circular plate-like structures. At this time, a sealing member 5 can be provided on the body structure, and the sealing member 5 is also in a plate-like structure, so as to achieve the sealing between the plate-like structures and prevent the high-pressure air flow in the pipe from flowing out through the pores at the starting and ending points of the zipper connection.

[0063] For another example, as a preferred example, the shapes of the outer cover body 1 and the inner cover body 2 are as Figure 1 shown in the bowl-shaped structure. A sealing ring is provided at the four peripheral edges of the bowl-shaped structure to enhance the sealing effect.

[0064] Compared with the plate-like structure, the advantage of using the bowl-shaped structure is that when the pressure applied between the outer cover body 1 and the inner cover body 2 is the same, the contact surface of the bowl-shaped structure that clamps each other is small, the pressure is high, and the sealing effect is better. At the same time, only the sealing ring can be used at the four peripheral edges, reducing the amount of the sealing member 5 and lowering the cost.

[0065] In order to improve the strength of the sealing device and extend its service life, as shown in Figure 1 shown, reinforcing ribs 6 are provided on the outer cover body 1 and / or the inner cover body 2; the reinforcing ribs 6 are arranged radially.

[0066] The material of the outer cover body 1 and / or the inner cover body 2 is plastic, metal, or other common rigid materials.

[0067] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application 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 application. Unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0068] It should be noted that in the present application, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

[0069] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A flexible composite air duct zipper connection sealing device, characterized in that: It includes: An outer cover body (1), wherein a through hole (11) is formed on the outer cover body (1); An inner cover body (2) arranged opposite to the outer cover body (1); A limiting mechanism comprises a connecting rod (3) and a limiting member (4); one end of the connecting rod (3) movably passes through the through hole (11) and is connected to the inner cover body (2); the limiting member (4) is located on the connecting rod (3) and is used to abut against the outer cover body (1) so that the outer cover body (1) and the inner cover body (2) are clamped.

2. The flexible composite air duct zipper connection sealing device according to claim 1, characterized in that: The connecting rod (3) is screwed onto the inner cover body (2); The limiting member (4) is fixed on the connecting rod (3).

3. The flexible composite air duct zipper connection sealing device according to claim 2, characterized in that: The inner cover body (2) is provided with an internal threaded hole, the outer surface of the connecting rod (3) is provided with an external thread, and the connecting rod (3) is screwed into the internal threaded hole via the external thread.

4. The flexible composite air duct zipper connection sealing device according to claim 2, characterized in that: The inner cover body (2) is provided with a threaded column (21), and the connecting rod (3) is threadedly connected to the threaded column (21).

5. The flexible composite air duct zipper connection and sealing device according to claim 4, characterized in that: The threaded column (21) is provided with an internal threaded hole, the outer surface of the connecting rod (3) is provided with an external thread, and the connecting rod (3) is screwed into the internal threaded hole through the external thread; Alternatively, the outer surface of the threaded column (21) is provided with an external thread, the connecting rod (3) is provided with an internal threaded hole, and the threaded column (21) is screwed into the internal threaded hole via the external thread.

6. The flexible composite air duct zipper connection and sealing device according to claim 1, characterized in that: The connecting rod (3) is fixed on the inner cover body (2); The limiting member (4) is screwed onto the connecting rod (3).

7. The flexible composite air duct zipper connection and sealing device according to claim 1, characterized in that: There are a plurality of limit members (4), which are installed on the connecting rod (3) at intervals along the length direction of the connecting rod (3); The limiting member (4) is an elastic snap button that matches the inner diameter of the through hole (11); The limiting member (4) is configured to pass through the through hole (11) under the action of a pressing force or a pulling force greater than a designed external force.

8. The flexible composite air duct zipper connection and sealing device according to claim 1, characterized in that: A sealing member (5) is provided on the outer cover body (1) and / or the inner cover body (2).

9. The flexible composite air duct zipper connection and sealing device according to claim 1, characterized in that: The shape of the outer cover (1) and / or the inner cover (2) is circular, semicircular, rectangular or bowl-shaped; And / or, the outer cover body (1) and / or the inner cover body (2) are provided with reinforcing ribs (6); And / or, the outer cover body (1) and / or the inner cover body (2) are made of plastic or metal.

10. A method for connecting and sealing a flexible composite air duct with a zipper, characterized in that: It includes: Provide a flexible composite air duct zipper connection sealing device as described in any one of claims 1 to 9; The inner cover body (2) is placed inside the gap between the starting and ending points of the zipper connection of the flexible composite air duct; The outer cover (1) is placed outside the holes at the starting and ending points of the zipper connection of the flexible composite air duct, and the connecting rod (3) is passed through the holes at the starting and ending points of the zipper connection of the flexible composite air duct; The limiting member (4) is used to abut against the outer cover body (1) so that the outer cover body (1) and the inner cover body (2) are clamped.

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