Rotary ball and socket expansion joint device

Abstract

The utility model discloses a kind of rotary ball head telescopic joint devices, it is related to pipe fitting joint technical field, the device includes ball head rotating component, telescopic adjusting component and sealing connection component;Ball head rotating component contains ball head joint and ball socket shell, can realize 360 degrees rotation and multi-angle inclination, adapt different direction pipeline;Telescopic adjusting component is constituted by inner tube, outer tube, and length is adjusted by relative sliding, compensates installation deviation, and set limit structure prevents to come out;Sealing connection component contains first, second sealing member, respectively seals rotation and telescopic position, prevents fluid leakage;Device structure is compact, easy to operate, can effectively solve pipeline installation problem under special environment, improve installation efficiency and connection reliability, applicable to washing machine, washing machine and other low-pressure fluid pipeline.

Description

Technical Field

[0001] This utility model relates to the field of pipe fittings and joints, specifically a rotating ball head expansion joint device. Background Technology

[0002] In low-pressure fluid pipeline connections in equipment and household appliances such as dishwashers and washing machines, it is often necessary to use connectors to change the direction of fluid transport. Due to installation space limitations and pipe processing errors, the following problems often occur during pipe connections: the pipe length deviates by several centimeters or millimeters after the connector is connected; the connector needs to have a specific tilt angle, but conventional 90-degree or 45-degree elbows cannot meet the angle adaptation requirements. These problems lead to difficulties in pipe installation and even potential hazards such as loose connections and leaks. Therefore, there is an urgent need for a connector device that can flexibly adjust the deflection angle and length to adapt to the pipe connection needs in special environments. Utility Model Content

[0003] The present invention aims to solve the above problems, thereby providing a rotary ball joint device that can flexibly adjust the deflection angle and length.

[0004] The technical solution adopted by this utility model to solve the aforementioned problem is: A rotating ball-head expansion joint device includes a ball-head rotating assembly, an expansion adjustment assembly, and a sealing connection assembly. The ball-head rotating assembly can rotate 360 ​​degrees and tilt at a certain angle, enabling the joint to adapt to pipe connections in different directions. The expansion adjustment assembly can adjust the length in the horizontal direction to compensate for length deviations during pipe installation. The sealing connection assembly is respectively installed at the connection points of the ball-head rotating assembly and the expansion adjustment assembly to ensure no leakage during fluid transportation.

[0005] The ball joint rotating assembly includes a ball joint connector and a ball-and-socket housing. The ball joint connector is an integrated structure of a sphere and a tube. The spherical part is fitted and installed inside the cavity of the ball-and-socket housing, allowing it to rotate and tilt freely within the cavity. The tubular part extends to the outside of the ball-and-socket housing for connecting to external pipes. The ball joint connector has a through-flow fluid channel whose diameter matches the inner diameter of the pipe to be connected, ensuring smooth fluid flow. One side of the ball-and-socket housing has a connection port communicating with the inner cavity. The axis of the connection port is in the same plane as the center of the sphere within the ball-and-socket housing, ensuring that the fluid channel remains connected to the connection port during ball joint rotation.

[0006] The sealing connection assembly includes a first sealing element disposed on the contact surface between the spherical portion of the ball joint and the inner cavity of the ball-and-socket housing. A pressure cap is provided at the open end of the ball-and-socket housing, and the pressure cap is fixedly connected to the ball-and-socket housing by fasteners, pressing the first sealing element against the surface of the spherical portion to achieve a seal at the rotating part of the ball joint. Preferably, the first sealing element is a V-shaped elastic sealing ring, and the inner side of the pressure cap has a conical pressing surface adapted to the elastic sealing ring. The conical surface compresses the elastic sealing ring radially, enhancing the sealing effect.

[0007] The telescopic adjustment assembly includes an inner tube and an outer tube. One end of the inner tube is slidably fitted inside the other end of the outer tube, and the overall length is adjusted by the relative sliding of the inner and outer tubes. An annular sealing groove is provided on the outer surface of the inner tube. A second sealing element is installed within the annular sealing groove and makes tight contact with the inner surface of the outer tube, achieving a seal at the telescopic joint. The telescopic adjustment assembly also includes a limiting structure, including a radial protrusion at the end of the inner tube and a radial retaining edge at the end of the outer tube. The radial protrusion and the radial retaining edge cooperate to prevent the inner tube from completely detaching from the outer tube, ensuring reliable connection.

[0008] One end of the telescopic adjustment component is fixedly connected to the connection port of the ball-shaped housing, and the other end is provided with a connection structure for connecting external pipes. The connection structure can adopt conventional pipe connection forms such as threaded connection, snap-fit ​​or flange connection.

[0009] Compared with the prior art, the outstanding features of this utility model, which adopts the above technical solution, are: The ball-head rotating assembly enables 360-degree rotation and multi-angle tilting, meeting the pipe connection needs in different directions; the telescopic adjustment assembly enables flexible length adjustment, compensating for length deviations during pipe installation; the sealing connection assembly ensures the sealing performance of each moving part, preventing fluid leakage; the structure is compact and easy to operate, effectively solving pipe connection problems in special installation environments, improving installation efficiency and connection reliability. Attached Figure Description

[0010] Figure 1 is a schematic diagram of the overall structure of an embodiment of this utility model; Figure 2 is a schematic diagram of the spherical shell structure of an embodiment of the present invention; Figure 3 is a schematic diagram of the ball joint structure according to an embodiment of the present utility model; Figure 4 is a schematic diagram of the telescopic adjustment component structure according to an embodiment of the present invention.

[0011] The components are labeled as follows: ball head rotating assembly 1, ball head connector 11, ball-shaped housing 12, connection port 13, telescopic adjustment assembly 2, inner tube 21, outer tube 22, sealing connection assembly 3, first seal 31, gland 32, and second seal 33. Detailed Implementation

[0012] The present invention will be further described below with reference to embodiments, the purpose of which is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0013] See Figures 1-4 A rotating ball-head expansion joint device includes a ball-head rotating assembly 1, an expansion adjustment assembly 2, and a sealing connection assembly 3. The ball-head rotating assembly 1 can rotate 360 ​​degrees and tilt at a certain angle, allowing the joint to adapt to pipe connections in different directions. The expansion adjustment assembly 2 can adjust the length in the horizontal direction to compensate for length deviations during pipe installation. The sealing connection assembly 3 is respectively installed at the connection points of the ball-head rotating assembly 1 and the expansion adjustment assembly 2 to ensure no leakage during fluid transportation.

[0014] The ball joint rotating assembly 1 includes a ball joint 11 and a ball-and-socket housing 12. The ball joint 11 has an integrated structure of a sphere and a tube. The spherical part is fitted and installed in the inner cavity of the ball-and-socket housing 12, allowing it to rotate and tilt freely within the cavity. The tube extends to the outside of the ball-and-socket housing 12 for connecting to external pipes. The ball joint 11 has a through-flow fluid channel whose diameter matches the inner diameter of the pipe to be connected, ensuring smooth fluid flow. The end of the tube of the ball joint 11 has an interface structure for connecting to the pipe, which can be a conventional threaded pipe connection. One side of the ball-and-socket housing 12 has a connection port 13 communicating with the inner cavity. The axis of the connection port 13 is in the same plane as the center of the sphere within the inner cavity of the ball-and-socket housing 12, ensuring that the fluid channel remains connected to the connection port 13 during the rotation of the ball joint 11.

[0015] The sealing connection assembly 3 includes a first sealing element 31, disposed on the contact surface between the spherical portion of the ball joint 11 and the inner cavity of the ball-and-socket housing 12. The open end of the ball-and-socket housing 12 is provided with a pressure cap 32, which is fixedly connected to the ball-and-socket housing 12 by fasteners, pressing the first sealing element 31 against the surface of the spherical portion to achieve a seal at the rotating part of the ball joint. Preferably, the first sealing element 31 is a V-shaped elastic sealing ring, and the inner side of the pressure cap 32 is provided with a conical pressing surface adapted to the elastic sealing ring. The conical surface compresses the elastic sealing ring radially, enhancing the sealing effect.

[0016] The telescopic adjustment assembly 2 includes an inner tube 21 and an outer tube 22. One end of the inner tube 21 is slidably fitted inside one end of the outer tube 22. The overall length is adjusted by the relative sliding of the inner tube 21 and the outer tube 22. The fitted portion of the inner tube 21 and the outer tube 22 forms a fluid channel that can adjust the length. An annular sealing groove is provided on the outer surface of the inner tube 21. A second sealing element 33 is installed in the annular sealing groove and makes tight contact with the inner surface of the outer tube 22 to achieve sealing of the telescopic part. The telescopic adjustment assembly 2 also has a limiting structure, including a radial protrusion provided at the end of the inner tube 21 and a radial flange provided at the end of the outer tube 22. The radial protrusion and the radial flange cooperate to prevent the inner tube 21 from completely dislodging from the outer tube 22, ensuring the reliability of the connection.

[0017] One end of the telescopic adjustment component 2 is fixedly connected to the connection port 13 of the ball-shaped housing 12, and the other end is provided with a connection structure for connecting external pipes. The connection structure can adopt conventional pipe connection forms such as threaded connection, snap-fit ​​or flange connection.

[0018] This invention achieves 360-degree rotation and multi-angle tilting through a ball-head rotating assembly, meeting the needs of pipe connections in different directions; it achieves flexible length adjustment through a telescopic adjustment assembly, compensating for length deviations during pipe installation; the sealing connection assembly ensures the sealing performance of each moving part, preventing fluid leakage; it has a compact structure, is easy to operate, and can effectively solve pipe connection problems in special installation environments, improving installation efficiency and connection reliability.

[0019] The above description is only a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent changes made based on the content of the present utility model specification and its drawings are included within the scope of the present utility model.

Claims

1. A rotary ball joint expansion joint device, characterized in that: It includes a ball-head rotation assembly, a telescopic adjustment assembly, and a sealing connection assembly; the ball-head rotation assembly can rotate 360 ​​degrees and tilt at a certain angle, the telescopic adjustment assembly can adjust the length in the horizontal direction, and the sealing connection assembly is respectively set at the connection between the ball-head rotation assembly and the telescopic adjustment assembly to prevent fluid leakage; The ball joint rotation assembly includes a ball joint and a ball-and-socket housing. The ball joint has an integral structure of a ball and a tube. The ball part is fitted into the inner cavity of the ball-and-socket housing, and the tube part extends to the outside of the ball-and-socket housing. The ball joint has a through fluid channel inside, the diameter of which is adapted to the inner diameter of the pipe to be connected, and the tubular part of the ball joint has an interface structure for connecting the pipe at its end.

2. The rotary ball joint device according to claim 1, characterized in that: The spherical shell has a connection port on one side that communicates with the inner cavity, and the axis of the connection port is in the same plane as the center of the sphere in the inner cavity of the spherical shell.

3. The rotary ball joint device according to claim 1, characterized in that: The sealing connection assembly includes a first sealing element, which is disposed on the contact surface between the ball portion of the ball joint and the inner cavity of the ball-and-socket housing. The open end of the ball-and-socket housing is provided with a pressure cap for pressing the first sealing element, and the pressure cap and the ball-and-socket housing are fixedly connected by fasteners.

4. The rotary ball joint device according to claim 1, characterized in that: The telescopic adjustment assembly includes an inner tube and an outer tube. One end of the inner tube is slidably sleeved inside one end of the outer tube, and the sleeved portion of the inner tube and the outer tube forms a fluid channel that can adjust the length.

5. The rotary ball joint device according to claim 4, characterized in that: The sealing connection assembly also includes a second sealing element. An annular sealing groove is provided on the outer surface of the inner tube. The second sealing element is installed in the annular sealing groove and is in close contact with the inner surface of the outer tube.

6. The rotary ball joint device according to claim 5, characterized in that: The telescopic adjustment assembly is also provided with a limiting structure, which includes a radial protrusion at the end of the inner tube and a radial retaining edge at the end of the outer tube. The radial protrusion and the radial retaining edge cooperate to restrict the inner tube from completely dislodging from the outer tube.

7. A rotary ball joint device according to claim 5, characterized in that: One end of the telescopic adjustment component is fixedly connected to the connection port of the ball-shaped shell, and the other end is provided with a connection structure for connecting an external pipe.

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