Connecting structure of ventilating duct

Abstract

The utility model provides a connecting structure of a ventilation pipeline, which relates to the technical field of ventilation pipelines and comprises a first pipeline and a connecting pipe sleeve A. The connecting pipe sleeve is fixedly mounted on the surface of the first pipeline, a screw is in threaded connection with the interior of the connecting pipe sleeve, and a sealing strip is arranged in an inner ring groove of the connecting pipe sleeve A. And a fixing block is fixedly mounted on the surface of the connecting pipe sleeve A. According to the utility model, the connecting pipe sleeve, the connecting pipe sleeve A, the connecting pipe sleeve B, the connecting pipe sleeve C, the flexible folding pipe, the sealing strip, the insertion block and the bearing insertion block are arranged, so that two connecting pipes can be connected at different angles, the mounting mode is convenient and fast, the connecting angle is wide, the sealing performance is good, and the service life is long. And the limitation on the pipeline during connection is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of ventilation duct technology, and in particular to a connection structure for ventilation ducts. Background Technology

[0002] Ventilation ducts are metal or composite pipes used in ventilation and air conditioning engineering of industrial and civil buildings to facilitate air circulation within the building. Publication No. CN216447608U discloses a connection structure for a ventilation duct, relating to the field of ventilation duct technology. This utility model provides a connection structure for a ventilation duct, including a first duct, a second duct, and a connecting device. The first duct is connected to the second duct via the connecting device. The connecting device includes a connecting sleeve, a left connecting piece, a right connecting piece, and a locking mechanism. Both ends of the connecting sleeve have sleeve portions, and the first duct and the second duct are respectively sleeved on the sleeve portions. The left connecting piece... The connecting piece and the right connecting piece are respectively sleeved on the sleeve part to fix the first pipe and the second pipe on the sleeve part. The connecting sleeve is provided with a connecting protrusion ring in the middle. The locking mechanism is respectively provided on the connecting protrusion ring and the left connecting piece, and the connecting protrusion ring and the right connecting piece to fix the left connecting piece and the right connecting piece on the connecting sleeve. Although this product can directly connect the first pipe and the second pipe, it cannot be applied to more connection scenarios. When the connection of the two pipes is at different orientation angles, the connection angle cannot be flexibly adjusted. Only a customized connection structure can be used, which is time-consuming and costly, and needs to be improved. Utility Model Content

[0003] The purpose of this utility model is to solve the technical problems mentioned in the background section.

[0004] This utility model adopts the following technical solution: a connection structure for a ventilation duct, including a first duct and a connecting sleeve A. The connecting sleeve is fixedly installed on the surface of the first duct. A screw is threadedly connected to the inside of the connecting sleeve. A sealing strip is provided in the internal annular groove of the connecting sleeve A. A fixing block is fixedly installed on the surface of the connecting sleeve A. A flexible folded tube is fixedly installed at one end of the connecting sleeve A. A bearing insertion block is fixedly installed on one side of the flexible folded tube. A rotating disk is fixedly installed at one end of the flexible folded tube. A locking block is slidably connected inside the rotating disk. A connecting sleeve C is rotatably connected to the surface of the rotating disk. An insertion block is fixedly installed on one side of the connecting sleeve C. A screw is threadedly connected to one end of the connecting sleeve C. A sealing strip A is provided in the internal annular groove of the connecting sleeve C. The screw is threadedly connected to a connecting sleeve B. A second duct is fixedly installed inside the connecting sleeve B.

[0005] Preferably, the connecting sleeve A and the connecting sleeve C are fixedly connected by screws. Here, the first pipe, the second pipe, and the connecting sleeves are connected by screw threads.

[0006] Preferably, the interior of the supporting insert block is rotatably connected to the insert block, and the flexible folded tube is rotatably connected to the connecting sleeve C. Here, the flexible folded tube can be folded.

[0007] Preferably, the sealing strip is disposed at the connection between the first pipe and the connecting sleeve A, and sealing strip A is disposed at the connection between the second pipe and the connecting sleeve C. Here, the sealing strip improves the ventilation sealing effect.

[0008] Preferably, a locking block is inserted inside the connecting sleeve A, a tension block is fixedly installed on the upper surface of the locking block, a tension spring is fixedly installed on the lower surface of the tension block, and a fixing block is fixedly installed at the bottom end of the tension spring. Here, the angle of the rotating disk is fixed to make the connection more secure.

[0009] Preferably, the side of the stretching block is slidably connected to the interior of the fixed block. Here, the rotation angle of the rotating disk can be adjusted by stretching the stretching block.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] 1. In this utility model, the connecting pipe sleeve, connecting pipe sleeve A, connecting pipe sleeve B, connecting pipe sleeve C, flexible folding pipe, sealing strip, insertion block, and load-bearing insertion block enable the connection of two connecting pipes at different angles. The installation method is convenient, the connection angle is wide, and the sealing performance is good, which greatly reduces the restrictions on pipe connection.

[0012] 2. In this utility model, the tension block, tension spring, locking block, and fixing block make the connection of the ventilation duct more stable at different angles and the angle adjustment operation convenient. Attached Figure Description

[0013] Figure 1 This utility model provides an overall structural diagram of the connection structure of a ventilation duct;

[0014] Figure 2 An exploded view of the overall structure of a ventilation duct connection structure is provided for this utility model.

[0015] Figure 3 An exploded view of the left side of the overall structure of the connection structure of a ventilation duct is provided for this utility model;

[0016] Figure 4 This utility model proposes a connection structure for ventilation ducts. Figure 2 Enlarged view of point A in the middle;

[0017] Figure 5 This utility model proposes a connection structure for ventilation ducts. Figure 3 Enlarged view at point B in the middle;

[0018] Figure 6 A bottom view at 0° of the flexible folding tube connecting structure of the ventilation duct proposed in this utility model;

[0019] Figure 7 This utility model provides a schematic diagram of the overall structure of a flexible folded tube (60°) and a rotating disk (25°) for the connection structure of a ventilation duct.

[0020] Figure 8 An exploded view of the rotating disc of the connection structure of a ventilation duct is provided for this utility model.

[0021] Figure 9 An exploded view of the connecting sleeve C of the connection structure of the ventilation duct proposed in this utility model.

[0022] Legend:

[0023] 1. First pipe; 2. Second pipe; 3. Connecting sleeve; 4. Connecting sleeve A; 5. Connecting sleeve B; 6. Connecting sleeve C; 7. Flexible folding pipe; 8. Rotating disc; 9. Screw; 10. Sealing strip; 11. Sealing strip A; 12. Tension block; 13. Tension spring; 14. Locking block; 15. Fixing block; 16. Insertion block; 17. Bearing insertion block. Detailed Implementation

[0024] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0026] Example 1

[0027] Please see Figure 1-9This utility model provides a technical solution: a connection structure for a ventilation duct, including a first duct 1 and a connecting sleeve A4. A connecting sleeve 3 is fixedly installed on the surface of the first duct 1. A screw 9 is threadedly connected to the inside of the connecting sleeve 3, connecting the first duct 1 and the connecting sleeve 3. A sealing strip 10 is provided in the internal annular groove of the connecting sleeve A4 to improve ventilation. A fixing block 15 is fixedly installed on the surface of the connecting sleeve A4. A flexible folding tube 7 is fixedly installed at one end of the connecting sleeve A4, allowing adjustment of the connection angle. A bearing insertion block 17 is fixedly installed on one side of the flexible folding tube 7. A rotating disk 8 is fixedly installed at one end of the flexible folding tube 7, allowing rotation in the connection angle direction. A locking block 14 is slidably connected inside the rotating disk 8 to limit the angle. A connecting sleeve C6 is rotatably connected to the connecting sleeve. An insertion block 16 is fixedly installed on one side of the connecting sleeve C6. A screw 9 is threadedly connected to one end of the connecting sleeve C6. A sealing strip A11 is provided in the internal annular groove of the connecting sleeve C6. A connecting sleeve B5 is threadedly connected to the screw 9. A second pipe 2 is fixedly installed inside the connecting sleeve B5. Connecting sleeves A4 and 3 are fixedly connected by screws 9. Connecting sleeves C6 and B3 are fixedly connected by screws 9. The interior of the bearing insertion block 17 is rotatably connected to the insertion block 16. The flexible folding tube 7 is rotatably connected to the connecting sleeve C. The angle rotation is smoother. A sealing strip 10 is set at the connection between the first pipe 1 and the connecting sleeve A4. A sealing strip A11 is set at the connection between the second pipe 2 and the connecting sleeve C6, so that the sealing between the connecting sleeve C6 and the second pipe 2 is better.

[0028] Example 2

[0029] Please see Figure 1-4 A locking block 14 is inserted inside the connecting sleeve A4. A tension block 12 is fixedly installed on the upper surface of the locking block 14. Pulling the tension block 12 causes the locking block 14 to be pulled out from the rotating disk 8, thereby allowing the rotating disk 8 to rotate at an angle. A tension spring 13 is fixedly installed on the lower surface of the tension block 12. A fixing block 15 is fixedly installed at the bottom end of the tension spring 13. The force of the tension spring 13 can limit the locking block 14 to the rotating disk 8. The side of the tension block 12 is slidably connected to the inside of the fixing block 15.

[0030] Working principle: The flexible folding tube 7 is connected to the bearing insert block 17 through the insertion block 16, and has a certain angle folding performance. First, the connecting tube sleeve C6 and the connecting tube sleeve B5 are fixed by the screw 9, so that the second pipe 2 is connected to the connecting tube sleeve B5. Then, when connecting the first pipe 1, the tension block 12 is pulled out first. The tension spring 13 in the tension block 12 drives the locking block 14 to be pulled up, so that the rotating disk 8 rotates in the connecting tube sleeve C6. When the connecting tube sleeve A3 is rotated to the appropriate connection position, the tension block 12 can be put down to fix the required connection angle. Then, the folding performance of the flexible folding tube 7 allows the connecting tube sleeve A4 to cover part of the first pipe 1 and connect to the connecting tube sleeve 3.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A connection structure for a ventilation duct, comprising a first duct (1) and a connecting sleeve A (4), characterized in that: A connecting sleeve (3) is fixedly installed on the surface of the first pipe (1). A screw (9) is threaded inside the connecting sleeve (3). A sealing strip (10) is provided in the annular groove inside the connecting sleeve A (4). A fixing block (15) is fixedly installed on the surface of the connecting sleeve A (4). A flexible folded tube (7) is fixedly installed at one end of the connecting sleeve A (4). A bearing insertion block (17) is fixedly installed on one side of the flexible folded tube (7). A rotating disk is fixedly installed at one end of the flexible folded tube (7). (8) A locking block (14) is slidably connected inside the rotating disk (8). A connecting sleeve C (6) is rotatably connected to the surface of the rotating disk (8). An insertion block (16) is fixedly installed on one side of the connecting sleeve C (6). A screw (9) is threadedly connected to one end of the connecting sleeve C (6). A sealing strip A (11) is provided in the annular groove inside the connecting sleeve C (6). A connecting sleeve B (5) is threadedly connected to the screw (9). A second pipe (2) is fixedly installed inside the connecting sleeve B (5).

2. The connection structure of the ventilation duct according to claim 1, characterized in that: The connecting sleeve A (4) and the connecting sleeve (3) are fixedly connected by screws (9), and the connecting sleeve C (6) and the connecting sleeve B (5) are fixedly connected by screws (9).

3. The connection structure of the ventilation duct according to claim 1, characterized in that: The interior of the bearing insert (17) is rotatably connected to the insert (16), and the flexible folded tube (7) is rotatably connected to the connecting sleeve C (6).

4. The connection structure of the ventilation duct according to claim 1, characterized in that: The sealing strip (10) is set at the connection between the first pipe (1) and the connecting sleeve A (4), and the sealing strip A (11) is set at the connection between the second pipe (2) and the connecting sleeve C (6).

5. The connection structure of the ventilation duct according to claim 1, characterized in that: A locking block (14) is inserted inside the connecting sleeve A (4). A tension block (12) is fixedly installed on the upper surface of the locking block (14). A tension spring (13) is fixedly installed on the lower surface of the tension block (12). A fixing block (15) is fixedly installed at the bottom end of the tension spring (13).

6. The connection structure of the ventilation duct according to claim 5, characterized in that: The side of the stretching block (12) is slidably connected to the inside of the fixing block (15).

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