CN117662881A - Telescopic pipe fitting connector - Google Patents

Abstract

The invention provides a telescopic pipe connector, which includes a main connecting pipe, an auxiliary connecting pipe and a fastening structure. Wherein, the main connecting pipe has two ends, and one end of the main connecting pipe is a first butt end that can rotate universally. The auxiliary connecting pipe has two ends. One end of the auxiliary connecting pipe extends into the lumen of the main connecting pipe from the other end of the main connecting pipe. The end of the auxiliary connecting pipe extends into the main connecting pipe. A sealing structure in contact with the inner wall of the main connecting pipe cavity is provided. The other end of the auxiliary connecting pipe is a second butt joint end that can rotate universally. The fastening structure is provided at the other end of the main connecting pipe, capable of fixing the position of the auxiliary connecting pipe, and working with the sealing structure to seal the gap between the auxiliary connecting pipe and the main connecting pipe. The telescopic pipe connector provided by the invention can reduce its own weight, reduce the occupied space, facilitate disassembly and assembly, and can adapt to the connection of pipelines. It has good sealing effect and strong practicability.

Description

Telescopic pipe fitting connector

Technical field

The invention belongs to the technical field of pipeline connection, and specifically relates to a telescopic pipe connector.

Background technique

In the process of pipeline installation, pipeline improvement or pipeline compensation connection, telescopic pipe fitting connectors are usually used. Telescopic pipe fitting connectors usually have two position-adjustable connection ends, which greatly ensures the safety of the pipeline. Adaptable connection of butt ends.

In the prior art, telescopic pipe connectors usually include a fixed pipe and a telescopic pipe that is slidably plugged into the fixed pipe. However, when it comes to fixing the position of the telescopic pipe, the telescopic pipe is usually fixed to the telescopic pipe through long screws arranged at annular intervals outside the fixed pipe. Locking in the position (correspondingly, the fixed pipe and telescopic pipe are equipped with flanges for the long screws to pass through). This kind of structure has a large weight and takes up a large space. At the same time, the long screws are exposed The parts are large, easily corroded, inconvenient for disassembly and assembly, and have poor practicality. Moreover, the telescopic tube and the fixed tube need a clearance fit, and this connection structure cannot guarantee the sealing effect between the two and has poor practicality. In addition, during the pipeline installation process, the two ends on the pipeline that need to be connected (telescopic pipe connectors) may have a certain angular deviation and/or axis distance, and the telescopic pipe connectors cannot adapt, which directly increases the Increases the difficulty of connection work.

Contents of the invention

Embodiments of the present invention provide a telescopic pipe connector, aiming to solve the problem of poor practicality of existing telescopic pipe connectors.

In order to achieve the above object, the technical solution adopted by the present invention is to provide a telescopic pipe connector, which includes:

The main connecting pipe has two ends, one of the ends of the main connecting pipe is a first butt end that can rotate universally;

An auxiliary connecting pipe has two ends. One end of the auxiliary connecting pipe extends into the lumen of the main connecting pipe from the other end of the main connecting pipe. In the auxiliary connecting pipe The end extending into the main connecting pipe is provided with a sealing structure in contact with the inner wall of the main connecting pipe cavity; the other end of the auxiliary connecting pipe is a second butt end that can rotate universally;

A fastening structure is provided at the other end of the main connecting pipe, used to fix the position of the auxiliary connecting pipe, and works together with the sealing structure to secure the gap between the auxiliary connecting pipe and the main connecting pipe. Sealing gaps.

In a possible implementation, the main connecting pipe includes:

main body;

A first spherical member is provided at one end of the main body and has a first connection cavity that is communicated with the main body and coaxially arranged with the main body;

The first adapter member has a first spherical cavity that is adapted to the first spherical member and for the first spherical member to be inserted. One end of the first adapter member also has a first spherical cavity for the main body to pass through. The first opening, the other end of the first adapter is the first butt end.

In a possible implementation, the main connecting pipe further includes a first compression structure, and the first compression structure includes:

A first sealing ring is sleeved on the first spherical member and located at the first opening;

A first pressure plate is sleeved on the first spherical member and is threadedly connected to the first adapter. The first pressure plate has a first flange corresponding to the first sealing ring, so The first pressure plate is used to press the first sealing ring between the first spherical member and the first adapter member to fix the rotational position of the first spherical member and to The first spherical member and the first adapter member are sealed.

In a possible implementation, the auxiliary connecting pipe includes:

The auxiliary pipe body has one end extending into the main pipe body;

A second spherical member is provided at the other end of the auxiliary pipe body and has a second connection cavity connected with the auxiliary pipe body and coaxially arranged with the auxiliary pipe body;

The second adapter has a second spherical cavity that is adapted to the second spherical member and is inserted into the second spherical member. One end of the second adapter also has a second spherical cavity for the auxiliary tube body to pass through. through the second opening, and the other end of the second adapter is the second butt end.

In a possible implementation, the auxiliary connecting pipe further includes a second compression structure, and the second compression structure includes:

A second sealing ring is sleeved on the second spherical member and located at the second opening;

A second pressure plate is sleeved on the second spherical member and is threadedly connected to the second adapter. The second pressure plate has a second flange corresponding to the second sealing ring, so The second pressure plate is used to press the second sealing ring between the second spherical member and the second adapter member to fix the rotational position of the second spherical member and to The second spherical member and the second adapter member are sealed.

In a possible implementation, both the first butt end and the second butt end are flange structures.

7. The telescopic pipe connector according to claim 4, wherein the sealing structure includes:

A fixed ring is coaxially sleeved on the auxiliary pipe body and extends close to the auxiliary pipe body into the end of the main main body;

A moving ring is slidably sleeved on the auxiliary pipe body and is located at the end of the auxiliary pipe body extending into the main pipe body, and is spaced apart from the fixed ring. The moving ring and the fixed ring A first sealed space is formed between them;

The rotating sleeve has an external thread threadedly connected to the internal thread provided on the end of the auxiliary pipe body. The rotating sleeve has an annular baffle portion extending radially outward along the auxiliary pipe body. The annular baffle portion A second sealed space is formed between the plate part and the moving ring;

A first sealing ring, arranged in the first sealing space;

a second sealing ring, arranged in the second sealing void space;

Wherein, the rotating sleeve rotates, the annular baffle is close to the fixed ring, and the first sealing ring and the second sealing ring are squeezed by the moving ring, so that the first sealing ring The ring and the second sealing ring extend and abut against the inner wall surface of the main body.

In a possible implementation, the outer diameter of the first sealing ring is larger than the outer diameter of the second sealing ring.

In a possible implementation, the fastening structure includes:

A joint is fixedly connected to the other end of the main body. The joint has a communicating cavity connected with the main body. An expansion port is provided at one end of the joint away from the main body. The expansion port is connected to the main body. An annular limiting platform is formed between the communicating cavities;

A sealing rubber ring is arranged in the expansion cavity and sleeved on the auxiliary pipe body;

A locking connection disk is sleeved on the auxiliary pipe body. The locking connection disk has a tapered insert portion that extends into the enlarged cavity. The tapered insert portion is used to connect with the annular limiter. The tables jointly squeeze the sealing rubber ring so that the sealing rubber ring extends and contacts the outer wall of the auxiliary pipe body;

There are multiple locking bolts for locking the joint and the locking connection plate.

In this implementation method, the sliding connection of the main connecting pipe and the auxiliary connecting pipe can ensure the docking work of the pipeline. The sealing structure provided on the end of the auxiliary connecting pipe extending into the main connecting pipe can ensure that the gap between the two is sealed inside the main connecting pipe, thereby ensuring the sealing effect, while the sealing structure provided on the other end of the main connecting pipe The fastening structure can ensure that the sliding position of the auxiliary connecting pipe is fixed, and at the same time can further form a seal, further ensuring the sealing effect between the two. The first butt-joint end provided on the main connecting pipe and the second butt-joint end provided on the auxiliary connecting pipe can both be universally rotated, ensuring that they can adapt to ends with angular deviations and/or axial deviations on the pipeline, thereby ensuring pipeline connection. Convenience of working. The telescopic pipe connector provided by this implementation method can reduce its own weight, reduce the occupied space, facilitate disassembly and assembly, and can adapt to the connection of pipelines, and has good sealing effect and strong practicability.

Description of drawings

Figure 1 is a schematic structural diagram of a telescopic pipe connector provided by an embodiment of the present invention;

Figure 2 is a schematic structural diagram 2 of a telescopic pipe connector provided by an embodiment of the present invention;

Figure 3 is an enlarged structural schematic diagram of position A of the telescopic pipe connector provided in the embodiment of Figure 1;

Figure 4 is an enlarged structural schematic diagram of position B of the telescopic pipe connector provided in the embodiment of Figure 1;

Figure 5 is an enlarged structural schematic diagram of position C of the telescopic pipe connector provided in the embodiment of Figure 2;

Figure 6 is an enlarged structural schematic diagram of the telescopic pipe connector provided by the embodiment of Figure 2 at D;

Figure 7 is a schematic structural diagram of another embodiment of the sealing structure of the telescopic pipe connector provided by the embodiment of the present invention;

Explanation of reference symbols:

10. Main connecting pipe; 11. Main body; 12. First spherical piece; 13. First adapter; 131. First butt end; 14. First compression structure; 141. First sealing ring; 142. first pressure plate;

20. Auxiliary connecting pipe; 21. Auxiliary pipe body; 22. Second spherical piece; 23. Second adapter; 231. Second butt end; 24. Second compression structure; 241. Second sealing ring; 242 , the second pressure plate;

30. Fastening structure; 31. Joint; 32. Sealing rubber ring; 33. Locking connection plate; 34. Locking bolt;

40. Sealing structure; 41. Fixed ring; 411. Extended end; 42. Moving ring; 43. Rotating sleeve; 44. First sealing ring; 45. Second sealing ring.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention.

Please refer to Figures 1 and 2 together to describe the telescopic pipe connector provided by the present invention. The telescopic pipe connector includes a main connecting pipe 10, an auxiliary connecting pipe 20 and a fastening structure 30. The main connecting pipe 10 has two ends, and one end of the main connecting pipe 10 is a universally rotatable first butt end 131 . The auxiliary connecting pipe 20 has two ends. One end of the auxiliary connecting pipe 20 extends into the lumen of the main connecting pipe 10 from the other end of the main connecting pipe 10. The auxiliary connecting pipe 20 extends into the main connecting pipe 10. The end of the tube 10 is provided with a sealing structure 40 in contact with the inner wall of the main connecting tube 10 lumen. The other end of the auxiliary connecting pipe 20 is a universally rotatable second butt end 231 . The fastening structure 30 is provided at the other end of the main connecting pipe 10 to fix the position of the auxiliary connecting pipe 20 and seal the gap between the auxiliary connecting pipe 20 and the main connecting pipe 10 together with the sealing structure 40 .

Compared with the existing technology, the telescopic pipe connector provided in this embodiment can ensure that the sliding connection between the main connecting pipe 10 and the auxiliary connecting pipe 20 can adapt to the docking work of pipelines. The sealing structure 40 provided on the end of the auxiliary connecting pipe 20 extending into the main connecting pipe 10 can ensure that the gap between the two is sealed inside the main connecting pipe 10, thereby ensuring the sealing effect. The fastening structure 30 on the other end of the pipe 10 can ensure that the sliding position of the auxiliary connecting pipe 20 is fixed, and at the same time can further form a seal, further ensuring the sealing effect between the two. The first butt end 131 provided on the main connecting pipe 10 and the second butt end 231 provided on the auxiliary connecting pipe 20 are both capable of universal rotation, ensuring that they can adapt to ends with angular deviations and/or axial deviations on the pipeline, and thus Ensure the convenience of pipeline connection work. The telescopic pipe connector provided in this embodiment can reduce its own weight, reduce the occupied space, facilitate disassembly and assembly, and can adapt to the connection of pipelines. It has good sealing effect and strong practicability.

In some embodiments, the above-mentioned main connecting pipe 10 may adopt the structure as shown in FIG. 2 and FIG. 6 . Referring to FIGS. 2 and 4 , the main connecting pipe 10 includes a main body 11 , a first spherical member 12 and a first adapter 13 . Among them, the first spherical member 12 is provided at one end of the main body 11 and has a first connection cavity connected with the main body 11 and coaxially arranged with the main body 11 . The first adapter 13 has a first spherical cavity adapted to the first spherical member 12 and for the first spherical member 12 to be inserted. One end of the first adapter 13 also has a first opening for the main body 11 to pass through. The other end of the first adapter 13 is the first docking end 131 .

The main body 11 and the first spherical member 12 can be an integrally formed structure. The first spherical member 12 and the first spherical cavity in the first adapter member 13 are in a universal rotational fit to ensure the universal butt joint of the first butt end 131 Function, this kind of structure can ensure that the first butt end 131 can adapt to the end with angular deviation and/or axis deviation on the pipeline, and has strong adaptability and strong practicability.

In this embodiment, a cavity needs to be provided between the first docking end 131 and the first spherical cavity to ensure communication.

In some embodiments, the above-mentioned main connecting pipe 10 may adopt the structure as shown in FIG. 2 and FIG. 6 . Referring to FIGS. 2 and 4 , the main connecting pipe 10 further includes a first pressing structure 14 , and the first pressing structure 14 includes a first sealing ring 141 and a first pressure plate 142 . Among them, the first sealing ring 141 is sleeved on the first spherical member 12 and is located at the first opening. The first pressure plate 142 is sleeved on the first spherical member 12 and is threadedly connected to the first adapter 13 . The first pressure plate 142 has a first flange corresponding to the first sealing ring 141 . The first pressure plate 142 The first sealing ring 141 can be pressed between the first spherical member 12 and the first adapter 13 to fix the rotational position of the first spherical member 12 and to secure the first spherical member 12 and the first adapter. Part 13 for sealing.

Through the threaded connection between the first pressure plate 142 and the first adapter 13, it can be ensured that the first flange presses the first sealing ring 141 at the first opening, and the first sealing ring 141 is extended to connect with the first spherical member. 12 are in contact with each other to ensure that the rotation position of the first spherical member 12 is fixed, and at the same time, the gap between the first spherical member 12 and the first adapter 13 is sealed, which enhances adaptability while ensuring the sealing effect, and is practical. Strong sex.

The first pressure plate 142 may have a cylindrical cavity for the first adapter 13 to extend into, and an internal thread structure is provided on the inner wall of the cylindrical cavity, while the first pressure plate 142 is away from the second adapter 23 One end of has a first flange extending radially inward, and the first flange is an annular structure. Correspondingly, the outer wall surface of the first adapter 13 has external threads adapted to the internal thread structure.

In some embodiments, the above-mentioned auxiliary connecting pipe 20 may adopt the structure as shown in FIG. 1 and FIG. 3 . Referring to FIGS. 1 and 3 , the auxiliary connecting pipe 20 includes an auxiliary pipe body 21 , a second spherical member 22 and a second adapter member 23 . Among them, one end of the auxiliary pipe body 21 extends into the main body 11 . The second spherical member 22 is provided at the other end of the auxiliary tube body 21 and has a second connection cavity that communicates with the auxiliary tube body 21 and is coaxially arranged with the auxiliary tube body 21 . The second adapter 23 has a second spherical cavity adapted to the second spherical member 22 and for the second spherical member 22 to be inserted. One end of the second adapter 23 also has a second spherical cavity for the auxiliary pipe body 21 to pass through. The other end of the second adapter 23 is open and is the second docking end 231 .

The auxiliary pipe body 21 and the second spherical member 22 may be an integrally formed structure. The second spherical member 22 and the second spherical cavity in the second adapter member 23 are in a universal rotational fit to ensure the universal rotation of the second butt end 231 . With the docking function, this structure can ensure that the second docking end 231 can adapt to the ends on the pipeline with angular deviation and/or axis deviation, and is highly adaptable and practical.

In this embodiment, a cavity needs to be provided between the second docking end 231 and the second spherical cavity to ensure communication.

In some embodiments, the above-mentioned auxiliary connecting pipe 20 may adopt the structure as shown in FIG. 1 and FIG. 3 . Referring to FIGS. 1 and 3 , the auxiliary connecting pipe 20 further includes a second pressing structure 24 , and the second pressing structure 24 includes a second sealing ring 241 and a second pressure plate 242 . The second sealing ring 241 is sleeved on the second spherical member 22 and is located at the second opening. The second pressure plate 242 is sleeved on the second spherical member 22 and is threadedly connected to the second adapter 23. The second pressure plate 242 has a second flange corresponding to the second sealing ring 241. The second pressure plate 242 The second sealing ring 241 can be pressed between the second spherical member 22 and the second adapter 23 to fix the rotational position of the second spherical member 22 and to secure the second spherical member 22 and the second adapter. Part 23 is used for sealing.

Through the threaded connection between the second pressure plate 242 and the second adapter 23, it can be ensured that the second flange presses the second sealing ring 241 at the second opening, and the first sealing ring 141 is extended to connect with the second spherical member. 22 are in contact with each other to ensure that the rotation position of the second spherical member 22 is fixed, and at the same time to ensure that the gap between the second spherical member 22 and the second adapter 23 is sealed, the adaptability is enhanced while ensuring the sealing effect, and is practical Strong sex.

The second pressure plate 242 may have a cylindrical cavity for the second adapter 23 to extend into, and an internal thread structure is provided on the inner wall of the cylindrical cavity, while the second pressure plate 242 is away from the second adapter 23 One end has a second flange extending radially inward, and the second flange is an annular structure. Correspondingly, the outer wall surface of the second adapter 23 has external threads adapted to the internal thread structure.

In some embodiments, the above-mentioned first docking end 131 and the second docking end 231 may adopt the structures shown in FIG. 3 and FIG. 6 . Referring to Figures 3 and 6, both the first butt joint end 131 and the second butt joint end 231 have a flange plate structure. The flange plate structure can facilitate connection, is simple in structure, easy to manufacture, and has high practicability.

In some embodiments, the above-mentioned sealing structure 40 may adopt the structure shown in FIG. 4 . Referring to FIG. 4 , the sealing structure 40 includes a fixed ring 41 , a moving ring 42 , a rotating sleeve 43 , a first sealing ring 44 and a second sealing ring 45 . The fixing ring 41 is coaxially sleeved on the auxiliary pipe body 21 and extends close to the auxiliary pipe body 21 to the end of the main pipe 11 . The moving ring 42 is slidably sleeved on the auxiliary pipe body 21 and is located at the end of the auxiliary pipe body 21 extending into the main body 11 and is spaced apart from the fixed ring 41. A first seal is formed between the moving ring 42 and the fixed ring 41. space. The rotating sleeve 43 has an external thread that is threadedly connected to the internal thread provided on the end of the auxiliary pipe body 21. The rotating sleeve 43 has an annular baffle portion extending radially outward along the auxiliary pipe body 21. The annular baffle portion is connected to the moving ring. A second sealed space is formed between 42. The first sealing ring 44 is disposed in the first sealing space. The second sealing ring 45 is disposed in the second sealing void space.

Wherein, the rotating sleeve 43 rotates, the annular baffle is close to the fixed ring 41, and the first sealing ring 44 and the second sealing ring 45 are squeezed by the moving ring 42, so that the first sealing ring 44 and the second sealing ring 45 extend And abuts against the inner wall surface of the main body 11 .

The fixed ring 41 and the auxiliary pipe body 21 can be connected in one piece. Correspondingly, the rotating sleeve 43 and the auxiliary pipe body 21 can have a tongue-and-groove butt structure, and the rotating sleeve 43 can have a T-shaped structure. Through the rotation of the rotating sleeve 43, the moving ring 42, the first sealing ring 44 and the second sealing ring 45 can be clamped together with the fixed ring 41. As the moving ring 42 moves, the first sealing space and the second sealing space are tightened. The space is reduced, thereby ensuring that the first sealing ring 44 and the second sealing ring 45 are deformed and extended to abut against the inner wall of the main body 11 to achieve sealing.

It should be noted that a flat portion can be provided on the inner wall of the rotating sleeve 43. For the rotation of the rotating sleeve 43, a special tool needs to be used. Specifically, a long rod can be used, and the end of the long rod is fixed with the rotating rod. The inner wall of the sleeve 43 is adapted to a spreading structure. This structure extends into the sleeve 43 through the auxiliary connecting pipe 20, and the control of the rotating sleeve 43 is realized by rotating the long rod. Such tools are all existing technologies, and in this field Technicians can easily manufacture it.

In some embodiments, the above-mentioned sealing structure 40 may adopt the structure shown in FIG. 4 . Referring to Figure 4, the outer diameter of the first sealing ring 44 is larger than the outer diameter of the second sealing ring 45, because when the first sealing ring 44 and the second sealing ring 45 are squeezed, the second sealing ring 45 may first come into contact with the second sealing ring 45. The inner walls of the main body 11 are in contact, which causes the sealing effect of the first sealing ring 44 to deteriorate. The outer diameter of the first sealing ring 44 is larger than the outer diameter of the second sealing ring 45, which ensures that after the two are squeezed at the same time, The first sealing ring 44 is first in contact with the inner wall of the main body 11, and then the second sealing ring 45 is in contact with the inner wall of the main body 11, thereby ensuring the sealing effect.

In some embodiments, the above-mentioned fastening structure 30 may adopt the structure as shown in FIG. 5 . Referring to FIG. 5 , the fastening structure 30 includes a joint 31 , a sealing rubber ring 32 , a locking connection disk 33 and a locking bolt 34 . Among them, the joint 31 is fixedly connected to the other end of the main body 11. The joint 31 has a communication cavity connected with the main body 11. The end of the joint 31 away from the main body 11 is provided with an expansion cavity, and an annular limit is formed between the expansion cavity and the communication cavity. Bit platform. The sealing rubber ring 32 is arranged in the enlarged cavity and sleeved on the auxiliary pipe body 21 . The locking connection disk 33 is sleeved on the auxiliary pipe body 21. The locking connection disk 33 has a tapered insert portion that extends into the enlarged cavity. The tapered insert portion can jointly squeeze the sealing rubber ring 32 with the annular limiter. So that the sealing rubber ring 32 extends and contacts the outer wall of the auxiliary pipe body 21 . A plurality of locking bolts 34 are provided to lock the joint 31 and the locking connection plate 33 .

The joint 31 can be located at the main body 11 for an integrally formed connection. After the locking connection plate 33 and the annular limiter jointly squeeze the sealing rubber ring 32, the sealing rubber ring 32 deforms and extends outward to the connection with the auxiliary pipe body 21. The inner walls are in contact to ensure that the position of the auxiliary pipe body 21 is fixed, and at the same time, the auxiliary pipe body 21 is sealed.

In some embodiments, specifically, see FIG. 7 , this embodiment also provides an implementation of a sealing structure 40 . The sealing structure 40 includes a fixed ring 41 , a moving ring 42 , a rotating sleeve 43 , a first sealing ring 44 and second sealing ring 45. The fixed ring 41 is coaxially sleeved on the auxiliary pipe body 21, and is slidingly connected to the auxiliary pipe body 21. The fixed ring 41 is provided with an extension end 411 extending along the axis of the auxiliary pipe body 21, and is sealed with the auxiliary pipe body 21. The rubber ring 32 is in contact with the auxiliary pipe body 21. The moving ring 42 is slidably sleeved on the auxiliary pipe body 21 and is spaced apart from the fixed ring 41. The rotating sleeve 43 is located at the end of the auxiliary pipe body 21 and is threadedly connected to the auxiliary pipe body 21. The rotating sleeve 43 is 43 has an annular baffle portion extending radially outward along the auxiliary pipe body 21 . Among them, the fixed ring 41 and the moving ring 42 are enclosed to form a first sealing space for the first sealing ring 44 to be placed, and the moving ring 42 and the annular baffle portion are formed to form a second sealing space for the second sealing ring 45 to be placed. Sealed space.

When the first sealing ring 44 and the second sealing ring 45 contact the inner wall of the main body 11 in advance, it may be inconvenient to move the auxiliary pipe body 21. Therefore, this structure can be used after the sealing rubber ring 32 is deformed and extended. Push the extension end 411, and then push the fixed ring 41 to move, so that the first sealing space and the second sealing space squeeze the first sealing ring 44 and the second sealing ring 45 at the same time. This structure can conveniently assist the pipe body 21 The relative movement of the main body 11 and the sealing effect between the two.

In this embodiment, because it involves the relative movement of the auxiliary pipe body 21 and the main pipe 11, the distance between the end of the auxiliary pipe body 21 and the sealing rubber ring 32 changes. This can be done by adding or subtracting the moving ring 42. For adjustment, regarding the provision of multiple moving rings 42, moving sealing rings need to be provided between corresponding two adjacent moving rings 42 to adapt to the expansion and contraction of the auxiliary pipe body 21.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (9)

1. Telescopic pipe connector, characterized in that it comprises:

the main connecting pipe is provided with two end parts, and one end part of the main connecting pipe is a first butt joint end capable of rotating in a universal way;

the auxiliary connecting pipe is provided with two end parts, one end part of the auxiliary connecting pipe extends into the pipe cavity of the main connecting pipe from the other end part of the main connecting pipe, and a sealing structure which is in contact with the inner wall of the pipe cavity of the main connecting pipe is arranged on the end part of the auxiliary connecting pipe extending into the main connecting pipe; the other end part of the auxiliary connecting pipe is a second butt joint end capable of rotating in a universal way;

the fastening structure is arranged at the other end of the main connecting pipe and used for fixing the position of the auxiliary connecting pipe and sealing a gap between the auxiliary connecting pipe and the main connecting pipe together with the sealing structure.

2. The telescoping tube connector as set forth in claim 1, wherein the main connecting tube comprises:

a main pipe body;

a first ball member disposed at one end of the main pipe body and having a first connection chamber communicating with the main pipe body and coaxially disposed with the main pipe body;

the first adapter is provided with a first spherical cavity which is matched with the first spherical part and is used for placing the first spherical part, one end of the first adapter is also provided with a first opening through which the main pipe body passes, and the other end of the first adapter is the first butt joint end.

3. The telescoping tube connector of claim 2, wherein the main connection tube further comprises a first compression structure comprising:

the first sealing ring is sleeved on the first spherical member and is positioned at the first opening;

the first pressure plate is sleeved on the first spherical part and is in threaded connection with the first adapter, the first pressure plate is provided with a first folding edge corresponding to the first sealing ring, and the first pressure plate is used for pressing the first sealing ring between the first spherical part and the first adapter so as to fix the rotating position of the first spherical part and seal the first spherical part and the first adapter.

4. The telescoping tube connector as in claim 2, wherein the secondary connection tube comprises:

one end of the auxiliary pipe body extends into the main pipe body;

the second spherical part is arranged at the other end of the auxiliary pipe body and is provided with a second connecting cavity which is communicated with the auxiliary pipe body and is coaxially arranged with the auxiliary pipe body;

the second adapter is provided with a second spherical cavity which is matched with the second spherical part and is used for placing the second spherical part, one end of the second adapter is also provided with a second opening for the auxiliary pipe body to pass through, and the other end of the second adapter is the second butt joint end.

5. The telescoping tube connector of claim 4, wherein the secondary connection tube further comprises a second compression structure comprising:

the second sealing ring is sleeved on the second spherical member and is positioned at the second opening;

the second pressure plate is sleeved on the second spherical part and is in threaded connection with the second adapter, the second pressure plate is provided with a second folding edge corresponding to the second sealing ring, and the second pressure plate is used for pressing the second sealing ring between the second spherical part and the second adapter so as to fix the rotating position of the second spherical part and seal the second spherical part and the second adapter.

6. The telescopic pipe connector of claim 4, wherein the first mating end and the second mating end are flange structures.

7. The telescoping tube connector as defined in claim 4, wherein the sealing structure comprises:

the fixing ring is coaxially sleeved on the auxiliary pipe body and is close to the end part of the auxiliary pipe body, which extends into the main pipe body;

the movable ring is sleeved on the auxiliary pipe body in a sliding manner, is positioned at the end part of the auxiliary pipe body extending into the main pipe body, is arranged at intervals with the fixed ring, and forms a first sealing space with the fixed ring;

the rotary sleeve is provided with an external thread in threaded connection with an internal thread arranged on the end part of the auxiliary pipe body, the rotary sleeve is provided with an annular baffle plate part extending outwards along the radial direction of the auxiliary pipe body, and a second sealing space is formed between the annular baffle plate part and the movable ring;

a first seal ring disposed in the first seal space;

a second seal ring disposed in the second seal void space;

the rotary sleeve rotates, the annular baffle is close to the fixed ring, and the first sealing ring and the second sealing ring are extruded through the movable ring, so that the first sealing ring and the second sealing ring extend and are abutted to the inner wall surface of the main pipe body.

8. The telescoping tube connector of claim 7, wherein the outer diameter of the first seal ring is greater than the outer diameter of the second seal ring.

9. The telescopic pipe connector of claim 4, wherein the fastening structure comprises:

the joint is fixedly connected with the other end of the main pipe body and is provided with a communication cavity communicated with the main pipe body, one end of the joint, which is far away from the main pipe body, is provided with an expanding cavity, and an annular limiting table is formed between the expanding cavity and the communication cavity;

the sealing rubber ring is arranged in the expanding cavity and sleeved on the auxiliary pipe body;

the locking connecting disc is sleeved on the auxiliary pipe body and is provided with a conical insertion barrel part extending into the expanding cavity, and the conical insertion barrel part is used for extruding the sealing rubber ring together with the annular limiting table so that the sealing rubber ring extends and is abutted with the outer wall of the auxiliary pipe body;

and a plurality of locking bolts are arranged for locking the joint and the locking connecting disc.