Airflow external connecting pipe with variable diameter function

Abstract

The utility model provides an airflow external connecting pipe with a variable diameter function, which relates to the technical field of pipeline components and comprises a main pipe, a conical head, a first jacket and a second jacket, and variable diameter mechanisms are arranged in the first jacket and the second jacket; the fixing sleeve on the outer side of the fastening bolt is unscrewed, the middle plate and the first clamping sleeve or the second clamping sleeve are not clamped by the fixing sleeve any more, the middle plate can slide along the arc-shaped groove, meanwhile, the fastening bolt slides in the strip-shaped groove, interference is avoided, the inner diameter of the first clamping sleeve or the second clamping sleeve can be changed, and the clamping effect is improved. And then the fixing sleeve is screwed down, so that the fixing sleeve clamps the middle plate and the first clamping sleeve or the second clamping sleeve again to lock the positions of the middle plate and the first clamping sleeve or the second clamping sleeve, and the problems that in the prior art, the diameter of a pipeline connector is inconvenient to change quickly, the application range is small, the practical effect is poor, and the pipeline connector is unstable in installation are solved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline component technology, and in particular to an external airflow pipe with variable diameter function. Background Technology

[0002] An external gas flow connector is a key component used to connect pneumatic systems or equipment. Its main function is to transmit gas. External gas flow connectors are usually made of corrosion-resistant and pressure-resistant materials to ensure smooth and safe gas transmission. They come in various designs, including straight pipes, bends, and flexible hoses, to adapt to the installation and usage requirements of different scenarios.

[0003] When connecting pipes of different diameters, pipe fittings are required to seal the connection between the two pipes. However, existing pipe fittings are not convenient for quick diameter changes, have a limited range of applications, poor practical effect, and unstable installation. Therefore, this utility model proposes an airflow external pipe with variable diameter function to solve the above problems. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes an airflow external pipe with variable diameter function to solve the problems of existing pipe joints, such as inconvenience in quickly changing the diameter of the pipe joint, limited applicability, poor practical effect, and unstable installation.

[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: an airflow external pipe with variable diameter function, including a main pipe, a cone head, a first sleeve and a second sleeve, the top end of the main pipe is fixedly connected to the cone head, and the first sleeve and the second sleeve are respectively provided on both sides of the cone head, and the first sleeve and the second sleeve are both provided with a variable diameter mechanism inside.

[0006] A further improvement is made in that: the diameter-changing mechanism includes an intermediate plate, fastening bolts, a strip groove, a fixing sleeve, and an arc groove. The first and second clamps are both provided with arc grooves inside. The intermediate plate is slidably connected inside the arc groove. Fastening bolts are symmetrically fixedly connected to both sides of the intermediate plate. A set of strip grooves is symmetrically provided on both sides of the first and second clamps. One end of the fastening bolt passes through the inside of the strip groove and is threadedly connected to the fixing sleeve.

[0007] A further improvement is that the shape of the fixing sleeve is set as a cylindrical structure, the diameter of the fixing sleeve is greater than the width of the strip groove, and the inner walls of the first sleeve and the second sleeve are uniformly fitted and connected to the outer wall of the main tube.

[0008] A further improvement is that: extension blocks are symmetrically and fixedly connected to both sides of the first and second sleeves, and a connecting mechanism is provided between the two extension blocks.

[0009] Further improvements are made in that: the connecting mechanism includes a hinge seat, a bolt, a fixing clip, a nut, and a pin; the extension block on the second sleeve is symmetrically fixedly connected to the hinge seat; the hinge seat is hinged to the bolt via the pin; the extension block on the first sleeve is symmetrically provided with fixing clips; one end of the bolt passes through the inner wall of the fixing clip and is threadedly connected to the nut.

[0010] A further improvement is that the width inside the fixing clip is equal to the diameter of the bolt, and the diameter of the nut is greater than the width inside the fixing clip.

[0011] A further improvement is that the material of the intermediate plate is spring steel, and the thickness of the intermediate plate is one-third of that of the first or second sleeve.

[0012] The beneficial effects of this utility model are as follows: Loosening the fixing sleeve on the outside of the fastening bolt prevents the fixing sleeve from clamping the middle plate to the first or second clamp, allowing the middle plate to slide along the arc groove. At the same time, the fastening bolt also slides inside the strip groove to avoid interference. This allows the inner diameter of the first or second clamp to be changed. Then, tightening the fixing sleeve causes the fixing sleeve to clamp the middle plate to the first or second clamp again, thereby locking the position of the middle plate to the first or second clamp. This solves the problems of existing pipe joints, such as difficulty in quickly changing the diameter of the pipe joint, limited applicability, poor practical effect, and unstable installation. Attached Figure Description

[0013] Figure 1 This is the front view of the present invention;

[0014] Figure 2 This is a front view of the present invention;

[0015] Figure 3 This is a side view of the present invention;

[0016] Figure 4 This utility model Figure 3 A magnified view of part A.

[0017] In the diagram: 1. Main pipe; 2. Conical head; 3. No. 1 clamp; 4. Intermediate plate; 5. Fastening bolt; 6. Strip groove; 7. Fixing sleeve; 8. Arc groove; 9. Extension block; 10. Hinge seat; 11. Bolt; 12. Fixing clip; 13. Nut; 14. Pin; 15. No. 2 clamp. Detailed Implementation

[0018] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0019] according to Figure 1 , 2 As shown in Figures 3 and 4, this embodiment proposes an airflow external pipe with variable diameter function, including a main pipe 1, a cone head 2, a first sleeve 3, and a second sleeve 15. The top end of the main pipe 1 is fixedly connected to the cone head 2. The first sleeve 3 and the second sleeve 15 are respectively provided on both sides of the cone head 2. The first sleeve 3 and the second sleeve 15 are both provided with a variable diameter mechanism inside. When using this airflow external pipe, firstly, the cone head 2 at one end of the main pipe 1 is connected to the external pipe. The cone-shaped structure of the cone head 2 can easily be inserted into the interior of the external pipe and fit tightly with it. Then, the first sleeve 3 and the second sleeve 15 are respectively attached to both sides of the main pipe 1 and connected to the first sleeve 3 and the second sleeve 15 as a whole to clamp the cone head 2 to the external pipe and connect the cone head 2 to the external pipe as a whole.

[0020] The variable diameter mechanism includes an intermediate plate 4, fastening bolts 5, a strip groove 6, a fixing sleeve 7, and an arc groove 8. Both the first clamping sleeve 3 and the second clamping sleeve 15 have arc grooves 8 inside. An intermediate plate 4 is slidably connected inside the arc groove 8. Fastening bolts 5 are symmetrically fixed to both sides of the intermediate plate 4. A set of strip grooves 6 are symmetrically provided on both sides of the first clamping sleeve 3 and the second clamping sleeve 15. One end of the fastening bolt 5 passes through the inside of the strip groove 6 and is threaded to the fixing sleeve 7. The fixing sleeve 7 is cylindrical in shape, and its diameter is larger than the width of the strip groove 6. The first clamping sleeve... The inner wall of the 3rd and the second sleeve 15 are uniformly connected to the outer wall of the main pipe 1. When a change in diameter is required, first loosen the fixing sleeve 7 on the outside of the fastening bolt 5. The fixing sleeve 7 will no longer clamp the intermediate plate 4 to the first sleeve 3 or the second sleeve 15, so that the intermediate plate 4 can slide along the arc groove 8. At the same time, the fastening bolt 5 also slides inside the strip groove 6 to avoid interference. This can change the inner diameter of the first sleeve 3 or the second sleeve 15. Then tighten the fixing sleeve 7 so that the fixing sleeve 7 clamps the intermediate plate 4 to the first sleeve 3 or the second sleeve 15 again to lock the position of the intermediate plate 4 to the first sleeve 3 or the second sleeve 15.

[0021] The first sleeve 3 and the second sleeve 15 are symmetrically fixedly connected to each other with extension blocks 9. A connecting mechanism is provided between the two extension blocks 9. The connecting mechanism includes a hinge seat 10, a bolt 11, a fixing clip 12, a nut 13, and a pin 14. The extension blocks 9 on the second sleeve 15 are symmetrically fixedly connected to the hinge seat 10. The hinge seat 10 is hinged to the bolt 11 through the pin 14. The extension blocks 9 on the first sleeve 3 are symmetrically provided with fixing clips 12. One end of the bolt 11 passes through the inner wall of the fixing clip 12 and is threadedly connected to the nut 13. The width inside the fixing clip 12 is equal to the diameter of the bolt 11. The diameter of the nut 13 is greater than the width inside the fixing clip 12. After the first sleeve 3 and the second sleeve 15 are attached to the connection between the main pipe 1 and the external pipe, one end of the bolt 11 is rotated to the fixing clip 12, and one end of the bolt 11 passes through the interior of the fixing clip 12. Then, the nut 13 is tightened on one end of the bolt 11. The nut 13 clamps the bolt 11 and the fixing clip 12 to connect the first sleeve 3 and the second sleeve 15 into one unit, so that the main pipe 1 and the external pipe are completely connected into one unit.

[0022] The intermediate plate 4 is made of spring steel, and the thickness of the intermediate plate 4 is one-third of that of the first sleeve 3 or the second sleeve 15.

[0023] The external airflow connector loosens the fixing sleeve 7 on the outside of the fastening bolt 5, so that the fixing sleeve 7 no longer clamps the intermediate plate 4 to the first clamp 3 or the second clamp 15, allowing the intermediate plate 4 to slide along the arc groove 8. At the same time, the fastening bolt 5 also slides inside the strip groove 6 to avoid interference. This changes the inner diameter of the first clamp 3 or the second clamp 15. Then, the fixing sleeve 7 is tightened, so that the fixing sleeve 7 clamps the intermediate plate 4 to the first clamp 3 or the second clamp 15 again, in order to lock the position of the intermediate plate 4 to the first clamp 3 or the second clamp 15. This solves the problems of existing pipe joints, such as inconvenience in quickly changing the diameter of the pipe joint, limited applicability, poor practical effect, and unstable installation.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An airflow external pipe with variable diameter function, comprising a main pipe (1), a cone (2), a first jacket (3), and a second jacket (15), characterized in that: The top of the main tube (1) is fixedly connected to a cone head (2). A first sleeve (3) and a second sleeve (15) are respectively provided on both sides of the cone head (2). The first sleeve (3) and the second sleeve (15) are both provided with a diameter changing mechanism inside. The variable diameter mechanism includes an intermediate plate (4), fastening bolts (5), a strip groove (6), a fixing sleeve (7), and an arc groove (8). The first sleeve (3) and the second sleeve (15) are both provided with arc grooves (8). The intermediate plate (4) is slidably connected inside the arc groove (8). Fastening bolts (5) are symmetrically fixedly connected to both sides of the intermediate plate (4). A set of strip grooves (6) is symmetrically provided on both sides of the first sleeve (3) and the second sleeve (15). One end of the fastening bolt (5) passes through the inside of the strip groove (6) and is threadedly connected to the fixing sleeve (7).

2. The airflow external pipe with variable diameter function according to claim 1, characterized in that: The fixed sleeve (7) is cylindrical in shape, and the diameter of the fixed sleeve (7) is greater than the width of the strip groove (6). The inner wall of the first sleeve (3) and the second sleeve (15) are uniformly connected to the outer wall of the main tube (1).

3. The airflow external pipe with variable diameter function according to claim 1, characterized in that: The first sleeve (3) and the second sleeve (15) are symmetrically fixedly connected with extension blocks (9) on both sides, and a connecting mechanism is provided between the two extension blocks (9).

4. The airflow external pipe with variable diameter function according to claim 3, characterized in that: The connecting mechanism includes a hinge seat (10), a bolt (11), a fixing clip (12), a nut (13), and a pin (14). The extension block (9) on the second sleeve (15) is symmetrically fixedly connected to the hinge seat (10). The hinge seat (10) is hinged to the bolt (11) through the pin (14). The extension block (9) on the first sleeve (3) is symmetrically provided with fixing clips (12). One end of the bolt (11) passes through the inner wall of the fixing clip (12) and is threadedly connected to the nut (13).

5. An external airflow pipe with variable diameter function according to claim 4, characterized in that: The width inside the fixing clip (12) is equal to the diameter of the bolt (11), and the diameter of the nut (13) is greater than the width inside the fixing clip (12).

6. An external airflow pipe with variable diameter function according to claim 1, characterized in that: The intermediate plate (4) is made of spring steel, and the thickness of the intermediate plate (4) is one-third of that of the first sleeve (3) or the second sleeve (15).

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