Water pipe rotating joint

Abstract

The invention provides a water pipe rotating joint which comprises an inner joint, an outer joint and a pivoting assembly, the inner joint is arranged on the inner side of the outer joint in a sleeving mode, and the pivoting assembly is arranged on the outer side of the inner joint in a sleeving mode and located on the inner side of the outer joint so that the inner joint and the outer joint can rotate relatively. Wherein the outer connector is provided with a first pivoting containing cavity, a second pivoting containing cavity and a communicating cavity communicating the first pivoting containing cavity with the second pivoting containing cavity, and the inner connector is arranged on the inner side of the communicating cavity of the outer connector in a sleeved mode. The inner joint extends to the second pivoting containing cavity from the second pivoting containing cavity of the outer joint through the communicating cavity, the pivoting assembly comprises a first pivoting mechanism and a second pivoting mechanism, and the first pivoting mechanism and the second pivoting mechanism of the pivoting assembly are arranged on the outer side of the inner joint in a sleeving mode; and the outer joint is positioned on the inner side of the outer joint.

Description

Technical Field

[0001] The invention relates to the technical field of joints, in particular to a water pipe rotary joint. Background Art

[0002] Water pipe joints are common and frequently used in daily life. They are mainly used in the connection of various water pipes, such as shower heads in bathrooms, water pipe nozzles for garden and industrial purposes, or for the extension and docking of two water pipes. The water pipe and the nozzle are connected by the water pipe joint, and the sealing and water-proof performance of the connection are achieved by the water pipe joint. In the prior art, the connection or connection of water pipes usually uses more than one accessory to connect their water pipes, so the accessories on the water pipe must be repeatedly installed and removed. Accessories of water pipes include nozzles, spray guns, sprinklers, high-pressure cleaners, extension pipes, rods and various other equipment.

[0003] The water pipe joint must not only achieve a sealed connection but also prevent some problems that may be encountered during use. For example, soft water pipes will bend and rotate during use, or the nozzle or spray gun connected to the other end of the water pipe joint will constantly switch states during use. This requires not only the water pipe joint to maintain good connection performance, but also to maintain a relatively good sealing relationship between the water pipe and the nozzle or spray gun connected to the other end during rotation.

[0004] The existing water pipe joint, as a key joint component connecting the water pipe and the nozzle or spray gun, can maintain connection and sealing, but when the two ends of the water pipe joint rotate relative to each other, such as rotating the water pipe or rotating the nozzle or spray gun, it is difficult for the water pipe joint to maintain relative or synchronous rotation of the two ends. As a result, the water pipe or one end may be entangled during use, thereby affecting the user experience.

[0005] In the prior art, coiling a long hose by pulling it or a spray head to store it often causes stress to the user holding the spray head or nozzle because the hose needs to be unwound and coiled when being pulled. If the user does not stop pulling and rotating the hose and the spray head to unwind the hose, this operation causes the hose to swing and often kink. This requires the user to keep turning the hose or the spray head to unwind the coiled hose or to roll up the hose. Therefore, there is a need for a device that allows easier unwinding and unwinding of the stored hose and allows easier installation from the hose.

[0006] The existing water pipe joints usually separate the faucet / accessory part from the water pipe part and seal them with an O-ring. It is found that the existing water pipe joints can rotate flexibly when there is no water, but once water is passed and the water pressure increases, the two movable parts get stuck, the friction increases and the joints cannot rotate flexibly. Summary of the invention

[0007] A major advantage of the present invention is that it provides a water pipe swivel joint, wherein the swivel joint can connect the water pipe and the sprinkler, nozzle or other equipment, and can allow the water pipe and sprinkler connected at both ends of the swivel joint to rotate relative to each other to prevent entanglement.

[0008] Another advantage of the present invention is that it provides a water pipe rotating joint, wherein the rotating joint includes an inner joint, an outer joint and a pivot assembly arranged between the inner joint and the outer joint, and the pivot assembly allows the inner joint and the outer joint to rotate freely relative to each other, which is convenient for users to use.

[0009] Another advantage of the present invention is to provide a water pipe swivel joint, wherein the inner joint, the outer joint and the pivot assembly disposed between the inner joint and the outer joint of the swivel joint are detachable for easy maintenance and replacement.

[0010] Another advantage of the present invention is to provide a water pipe rotary joint, wherein the assembly and manufacturing process of the rotary joint is simple, thereby improving production efficiency and product yield.

[0011] Another advantage of the present invention is that it provides a water pipe rotary joint, wherein the pivot assembly includes a first pivot mechanism and a second pivot mechanism, wherein the first pivot mechanism and the second pivot mechanism are arranged between the inner joint and the outer joint, allowing the inner joint and the outer joint to rotate relative to each other, thereby simplifying the manufacturing process of the rotary joint.

[0012] Another advantage of the present invention is to provide a water pipe swivel joint, wherein when the size of the outer joint of the water pipe swivel structure is fixed, the inner diameter of the inner joint is larger than the inner diameter of the inner joint of the prior art. Therefore, the water pipe swivel joint has a larger inner diameter to increase the flow rate of the water pipe.

[0013] According to one aspect of the present invention, a water pipe rotary joint of the present invention that can achieve the above-mentioned objects and other objects and advantages includes:

[0014] Internal joint;

[0015] An outer joint, wherein the inner joint is sleeved inside the outer joint; and

[0016] At least one pivot assembly, wherein the pivot assembly is sleeved on the outer side of the inner joint and on the inner side of the outer joint to allow the inner joint and the outer joint to rotate relative to each other, wherein the outer joint has a first pivot accommodating chamber, a second pivot accommodating chamber and a connecting chamber connecting the first pivot accommodating chamber and the second pivot accommodating chamber, the inner joint is sleeved on the inner side of the connecting chamber of the outer joint, and the inner joint extends from the second pivot accommodating chamber of the outer joint through the connecting chamber to the second pivot accommodating chamber, the pivot assembly includes a first pivot mechanism and a second pivot mechanism, wherein the first pivot mechanism and the second pivot mechanism of the pivot assembly are sleeved on the outer side of the inner joint and are located on the inner side of the outer joint.

[0017] According to one embodiment of the present invention, the first pivot mechanism is located in the first pivot accommodating cavity of the outer joint, and is used to reduce the friction between the inner joint and the outer joint in the first pivot accommodating cavity; the second pivot mechanism is located in the second pivot accommodating cavity of the outer joint, and is used to reduce the friction between the inner joint and the outer joint in the second accommodating cavity.

[0018] According to one embodiment of the present invention, the inner joint further includes a water pipe connecting end, a pivot extension end and a convex edge located between the water pipe connecting end and the pivot extension end, the water pipe connecting end is arranged opposite to the pivot extension end, and the water pipe connecting end is used to detachably connect a water pipe or other pipeline; the pivot extension end and the convex edge are rotatably arranged on the inner side of the outer joint, and the first pivot mechanism and the second pivot mechanism of the pivot assembly are sleeved on the outer side of the pivot extension end of the inner joint.

[0019] According to one embodiment of the present invention, the second pivot mechanism is spaced between the second accommodating cavity and the convex edge of the outer joint along the axial direction of the inner joint.

[0020] According to one embodiment of the present invention, the pivot extension end of the inner joint includes a first extension section, a second extension section and a third extension section, wherein the second extension section of the pivot extension end is sleeved on the inner side of the connecting cavity of the outer joint, the first extension section is located on the inner side of the first accommodating cavity of the outer joint, and the first pivot mechanism is sleeved on the outer side of the first extension section, the third extension section is located on the inner side of the second accommodating cavity of the outer joint, and the second pivot mechanism is sleeved on the outer side of the third extension end.

[0021] According to an embodiment of the present invention, the inner joint further comprises a fixing member for fixing the first pivot mechanism at the outer side of the first extension end of the pivot extension end of the inner joint.

[0022] According to one embodiment of the present invention, the fixing member includes a fixing ring and an annular groove formed on the outside of the fixing ring. When fixing the first pivot mechanism, the fixing ring is pressed outward along the circumferential direction of the annular groove to form a pressure ring to fix the first pivot mechanism.

[0023] According to an embodiment of the present invention, the first pivot mechanism comprises a first plane bearing and a bearing cover, wherein the bearing cover is arranged on both sides or one side of the first plane bearing.

[0024] According to one embodiment of the present invention, the external joint is further provided with a first support wall and a second support wall, wherein the first support wall is located in the first accommodating cavity, and the bearing cover of the first pivot mechanism can be attached to the first support wall; the second support wall is located in the second accommodating cavity, and the second pivot mechanism can contact the second support wall.

[0025] According to one embodiment of the present invention, the pivot assembly is sleeved on the outer side of the inner joint, and an adjustable movable gap is provided between the pivot assembly and the outer joint, wherein the movable gap is formed in the first accommodating cavity, which is located between the first pivot mechanism and the first supporting wall of the outer joint; or the movable gap is formed in the second accommodating cavity, which is located between the second pivot mechanism and the second supporting wall of the outer joint.

[0026] Further objects and advantages of the present invention will be fully apparent from an understanding of the following description and the accompanying drawings.

[0027] These and other objects, features and advantages of the present invention will be more fully understood from the following detailed description and accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. In the accompanying drawings, unless otherwise specified, the same reference numerals are used to represent the same components. Among them:

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of a water pipe rotary joint according to the first preferred embodiment of the present invention.

[0030] Figure 2 It is a schematic diagram of an exploded view of the water pipe rotary joint according to the first preferred embodiment of the present invention.

[0031] Figure 3A It is a cross-sectional view along the axial direction of the water pipe rotary joint according to the first preferred embodiment of the present invention when it is not conducting.

[0032] Figure 3B It is a cross-sectional view along the axial direction of the water pipe rotary joint according to the first preferred embodiment of the present invention when it is turned on. DETAILED DESCRIPTION

[0033] It should be pointed out that the embodiments shown in the drawings are only used as examples to specifically and figuratively explain and illustrate the concept of the present invention. The size and structure thereof are not necessarily drawn to scale, nor do they constitute a limitation to the concept of the present invention.

[0034] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the various drawings. They are relative concepts and may change accordingly according to different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0035] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0036] Referring to the drawings of this application specification Figures 1 to 3B As shown, a water pipe rotary joint according to the first preferred embodiment of the present application is explained in the following description. The water pipe rotary structure is used for docking or switching water pipes and other equipment, such as spray heads, nozzles, spray guns, sprinklers, high-pressure cleaners, extension pipes and various other equipment. The rotary joint includes an inner joint 10 and an outer joint 20 and at least one pivot assembly 30 arranged between the inner joint 10 and the outer joint 20, wherein the pivot assembly 30 is rotatably sleeved between the inner joint 10 and the outer joint 20, that is, the pivot assembly 30 is sleeved on the outer side of the inner joint 10 and on the inner side of the outer joint 20 to allow the inner joint 10 and the outer joint 20 to rotate relative to each other.

[0037] The inner joint 10 is suitable for connecting with a water pipe, and the outer joint 20 is suitable for connecting with other equipment, such as a nozzle or a spray gun, that is, the water pipe is connected or connected with other equipment through the inner joint 10 and the outer joint 20. The pivot assembly 30 is sleeved between the inner joint 10 and the outer joint 20, and is used to reduce or eliminate the friction between the inner joint 10 and the outer joint 20 when the inner joint 10 and the outer joint 20 rotate relative to each other, so that the relative rotation of the water pipe and the spray gun can be achieved without the inner joint 10 and the outer joint 20 being stuck due to the friction.

[0038] The external joint 20 has a first pivot accommodating cavity 201, a second pivot accommodating cavity 202, and a connecting cavity 203 connecting the first pivot accommodating cavity 201 and the second pivot accommodating cavity 202. The internal joint 10 is sleeved on the inner side of the connecting cavity 203 of the external joint 20, and the internal joint 10 extends from the second pivot accommodating cavity 202 of the external joint 20 through the connecting cavity 203 to the second pivot accommodating cavity 201.

[0039] The pivot assembly 30 includes a first pivot mechanism 31 and a second pivot mechanism 32, wherein the first pivot mechanism 31 and the second pivot mechanism 32 of the pivot assembly 30 are sleeved on the outer side of the inner joint 10 and located on the inner side of the outer joint 20. The first pivot mechanism 31 is located in the first pivot accommodating cavity 201 of the outer joint 20, and is used to reduce the friction between the inner joint 10 and the outer joint 20 in the first pivot accommodating cavity 201; the second pivot mechanism 32 is located in the second pivot accommodating cavity 202 of the outer joint 20, and is used to reduce the friction between the inner joint 10 and the outer joint 20 in the second accommodating cavity 202.

[0040] The inner joint 10 further includes a water pipe connecting end 11, a pivot extension end 12 and a flange 13 located between the water pipe connecting end 11 and the pivot extension end 12, wherein the water pipe connecting end 11 is arranged opposite to the pivot extension end 12, and the water pipe connecting end 11 is used to detachably connect a water pipe or other pipeline; the pivot extension end 12 and the flange 13 are rotatably arranged on the inner side of the outer joint 20, and the first pivot mechanism 31 and the second pivot mechanism 32 of the pivot assembly 30 are sleeved on the outer side of the pivot extension end 12 of the inner joint 10.

[0041] It should be noted that, in the preferred embodiment of the present application, the inner joint 10 and the outer joint 20 are implemented as cylindrical columnar structures.

[0042] It is worth mentioning that in this preferred embodiment of the present application, the outer diameter of the pivot extension end 12 of the inner joint 10 is less than or equal to the inner diameter of the connecting cavity 203 of the outer joint 20. The outer diameter of the flange 13 of the inner joint 10 is greater than the inner diameter of the connecting cavity 203. Preferably, in this preferred embodiment of the present application, the outer diameter of the flange 13 of the inner joint 10 is the same as the inner diameter of the second accommodating cavity 202.

[0043] The pivotal extension end 12 of the inner joint 10 extends from the second accommodating cavity 202 of the outer joint 20 to the connecting cavity 203 , and one end of the pivotal extension end 12 of the inner joint 10 protrudes from the connecting cavity 203 into the first accommodating cavity 201 .

[0044] The inner joint 10 has a communication channel 101 , wherein the axial direction of the communication channel 101 of the inner joint 10 is parallel to or coincides with the axial direction of the communication cavity 203 of the outer joint 20 .

[0045] The second pivot mechanism 32 of the pivot assembly 30 is spaced between the second accommodating cavity 202 of the external joint 20 and the convex edge 13 along the axial direction of the internal joint 10, avoiding direct contact between the side wall of the second accommodating cavity 202 and the convex edge 13, thereby reducing the friction between the internal joint 10 and the external joint 20 along the axial direction perpendicular to the axial direction.

[0046] Preferably, in this preferred embodiment of the present application, the second pivot mechanism 32 of the pivot assembly 30 is implemented as a planar bearing, and the second pivot mechanism 32 is padded between the second accommodating cavity 202 of the external joint 20 and the convex edge 13 along the axial direction of the inner mechanism 10.

[0047] The pivot extension end 12 of the inner joint 10 includes a first extension section 121, a second extension section 122 and a third extension section 123, wherein the second extension section 122 of the pivot extension end 12 is sleeved on the inner side of the connecting cavity 203 of the outer joint 20, the first extension section 121 is located on the inner side of the first accommodating cavity 201 of the outer joint 20, and the first pivot mechanism 31 is sleeved on the outer side of the first extension section 121, the third extension section 123 is located on the inner side of the second accommodating cavity 202 of the outer joint 20, and the second pivot mechanism 32 is sleeved on the outer side of the third extension end 123.

[0048] It can be understood that the first pivot mechanism 31 is sleeved on the outside of the first extension section 121 of the pivot extension end 12, and the first extension section 121 supports the first pivot mechanism 31 to rotate in the first accommodation cavity 201 of the outer joint 20. The second pivot mechanism 32 is sleeved on the outside of the third extension section 123 of the pivot extension end 12, and the third extension section 123 supports the second pivot mechanism 32 to rotate in the second accommodation cavity 202 of the outer joint 20.

[0049] It is worth mentioning that in the preferred embodiment of the present application, the first pivot mechanism 31 is rotatably sleeved between the inner joint 10 and the outer joint 20. The inner joint 10 further includes a fixing member 14 for fixing the first pivot mechanism 31 on the outer side of the first extension end 121 of the pivot extension end 12 of the inner joint 10.

[0050] Preferably, in this preferred embodiment of the present application, the fixing member 14 integrally extends from the outside of the first extension section 121 of the pivot extension end 12, and the fixing member 14 is used to fix the first pivot mechanism 31 to prevent the first pivot mechanism 31 from slipping off the first extension section 121 of the pivot extension end 12. The fixing member 14 includes a fixing ring 131 and an annular groove 132 formed on the outside of the fixing ring 131. When fixing the first pivot mechanism 31, the fixing ring 131 is pressed outward along the circumferential direction of the annular groove 132 to form a pressure ring, which can fix the first pivot mechanism 31.

[0051] The first pivot mechanism 31 includes a first plane bearing 311 and a bearing cover 312 , wherein the bearing cover 312 is disposed on both sides or one side of the first plane bearing 311 , and the bearing cover 312 serves to protect the first plane bearing 311 .

[0052] As an example, in this preferred embodiment of the present application, the bearing cover 312 further includes a first bearing cover 3121 and a second bearing cover 3122, wherein a bearing compartment for accommodating the first plane bearing 311 is provided between the first bearing cover 3121 and the second bearing cover 3122.

[0053] The fixing ring 131 of the fixing member 14 is fixed by stamping to the outside of the drawn part 312. It is worth mentioning that in the preferred embodiment of the present application, the first bearing cover 3121 of the bearing cover 312 is fixed to the outside of the first extension section 121 by the fixing member 14, and the second bearing cover 3122 of the bearing cover 312 is attached to the side wall of the first accommodating cavity 201 of the outer joint 20. Therefore, when the inner joint 10 and the outer joint 20 rotate relative to each other, the first plane bearing 311 of the first pivot mechanism 31 prevents the inner joint 10 and the outer joint 20 from contacting perpendicular to the axial direction between the bearing covers 312, thereby reducing friction.

[0054] It should be noted that the fixing ring 131 of the fixing member 14 is formed into a pressing ring after stamping and is attached to the outer side of the bearing cover 312 .

[0055] The external joint 20 is further provided with a first support wall 204 and a second support wall 205, wherein the first support wall 204 is located in the first accommodating cavity 201, and the bearing cover 312 of the first pivot mechanism 31 can be attached to the first support wall 204; the second support wall 205 is located in the second accommodating cavity 202, and the second pivot mechanism 32 can contact the second support wall 205.

[0056] The pivot assembly 30 is sleeved on the outside of the inner joint 10, and an adjustable movable gap 301 is provided between the pivot assembly 30 and the outer joint 20, wherein the movable gap 301 is formed in the first accommodating cavity 201, and is located between the first pivot mechanism 31 and the first supporting wall 204 of the outer joint 20; or the movable gap 301 is formed in the second accommodating cavity 202, and is located between the second pivot mechanism 32 and the second supporting wall 205 of the outer joint 20.

[0057] like Figure 3A and Figure 3B As shown, when the water pipe connected to the water pipe rotary joint is not conducting water, that is, the water in the water pipe reaches the first accommodating chamber 201 of the external joint 20 through the internal joint 10, the water pressure in the first accommodating chamber 201 will squeeze the first pivot mechanism 31 of the pivot assembly 30, so that the bearing cover 312 of the first pivot mechanism 31 is in close contact with the external joint 20. At this time, the moving gap 301 is located in the second pivot accommodating chamber 202, and the first pivot mechanism 31 plays a role in reducing friction, while the second pivot mechanism 32 is separated from the second support wall 205 of the external joint 20.

[0058] When the water pipe connected to the water pipe rotary joint is not conducting water, the water pressure in the first accommodating chamber 201 of the external joint 20 decreases, and the bearing cover 312 of the first pivot mechanism 31 is separated from the external joint 20, that is, at this time the moving gap 301 is located in the first pivot accommodating chamber 201, and the second pivot mechanism 32 is in contact with the second support wall 205 to reduce friction, and the first pivot mechanism 31 is separated from the first support wall 204 of the external joint 20.

[0059] In short, in this preferred embodiment of the present application, the moving gap 301 is formed between the first pivot mechanism 31 and the second pivot mechanism 32 of the pivot assembly 30, and when there is water pressure or no water pressure in the water pipe rotary joint, the first pivot mechanism 31 or the second pivot mechanism 32 is in contact with the external joint 20, thereby reducing friction.

[0060] That is to say, regardless of whether the water pipe rotating joint is conductive, only one of the first pivot mechanism 31 and the second pivot mechanism 32 of the pivot assembly 30 is in contact with the external joint 20, which can greatly reduce the impact of parts friction or collision and improve the freedom of rotation.

[0061] The water pipe rotary joint further includes at least one sealing strip 40, wherein the at least one sealing strip 40 is disposed between the inner joint 10 and the outer joint 20, and plays a role in sealing the first pivot accommodating cavity 201 of the outer joint 20. Preferably, in this preferred embodiment of the present application, the sealing strip 40 is disposed on the second extension section 122 of the inner joint 10. The inner joint 10 is further provided with at least one sealing groove 103, wherein the sealing groove 103 is located on the second extension section 122 of the inner joint 10, and the sealing strip 40 is disposed in the sealing groove 103 of the inner joint 10.

[0062] The water pipe connecting end 11 of the internal joint 10 includes a connecting end body 111 and at least one anti-detachment unit 112 formed on the connecting end body 111 , wherein the anti-detachment unit 112 protrudes outward from the outer side of the connecting end body 111 .

[0063] The external joint 20 further includes an external joint connecting end 21 and an external joint pivot end 22 extending integrally from the external joint connecting end 21 , wherein the external joint connecting end 21 is used to be detachably connected to a spray head or a spray gun, and the internal joint 10 is sleeved on the inner side of the external joint pivot end 22 .

[0064] The external joint connection end 21 is provided with an inner groove or an outer groove for detachably connecting a spray head or a spray gun.

[0065] It is worth mentioning that in the preferred embodiment of the present application, the inner diameter of the inner joint is larger than that of the inner joint of the prior art. Therefore, the water pipe rotary joint has a larger inner diameter so as to increase the flow rate of the water pipe.

[0066] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

[0067] The technical scope of the present invention is not limited to the contents in the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of ​​the present invention, and these deformations and modifications all belong to the protection scope of the present invention.

Claims

1. A water pipe rotary joint, characterized in that: include: Internal joint; An outer joint, wherein the inner joint is sleeved inside the outer joint; and At least one pivot assembly, wherein the pivot assembly is sleeved on the outer side of the inner joint and on the inner side of the outer joint to allow the inner joint and the outer joint to rotate relative to each other, wherein the outer joint has a first pivot accommodating chamber, a second pivot accommodating chamber and a connecting chamber connecting the first pivot accommodating chamber and the second pivot accommodating chamber, the inner joint is sleeved on the inner side of the connecting chamber of the outer joint, and the inner joint extends from the second pivot accommodating chamber of the outer joint through the connecting chamber to the second pivot accommodating chamber, the pivot assembly includes a first pivot mechanism and a second pivot mechanism, wherein the first pivot mechanism and the second pivot mechanism of the pivot assembly are sleeved on the outer side of the inner joint and are located on the inner side of the outer joint.

2. The water pipe rotary joint according to claim 1, wherein the first pivot mechanism is located in the first pivot accommodating chamber of the outer joint, and is used to reduce the friction between the inner joint and the outer joint in the first pivot accommodating chamber; the second pivot mechanism is located in the second pivot accommodating chamber of the outer joint, and is used to reduce the friction between the inner joint and the outer joint in the second accommodating chamber.

3. The water pipe rotating joint according to claim 2, wherein the inner joint further includes a water pipe connecting end, a pivot extension end and a flange located between the water pipe connecting end and the pivot extension end, the water pipe connecting end is arranged opposite to the pivot extension end, and the water pipe connecting end is used to detachably connect a water pipe or other pipeline; the pivot extension end and the flange are rotatably arranged on the inner side of the outer joint, and the first pivot mechanism and the second pivot mechanism of the pivot assembly are sleeved on the outer side of the pivot extension end of the inner joint. 4 . The water pipe swivel joint according to claim 3 , wherein the second pivot mechanism is spaced between the second accommodating cavity and the convex edge of the outer joint along the axial direction of the inner joint.

5. The water pipe rotary joint according to claim 3, wherein the pivot extension end of the inner joint comprises a first extension section, a second extension section and a third extension section, wherein the second extension section of the pivot extension end is sleeved on the inner side of the connecting cavity of the outer joint, the first extension section is located on the inner side of the first accommodating cavity of the outer joint, and the first pivot mechanism is sleeved on the outer side of the first extension section, the third extension section is located on the inner side of the second accommodating cavity of the outer joint, and the second pivot mechanism is sleeved on the outer side of the third extension end.

6. The water pipe swivel joint according to claim 5, wherein the inner joint further comprises a fixing member for fixing the first pivot mechanism at the outer side of the first extension end of the pivot extension end of the inner joint.

7. The water pipe rotary joint according to claim 5, wherein the fixing part includes a fixing ring and an annular groove formed on the outside of the fixing ring, and when fixing the first pivot mechanism, the fixing ring is pressed outward along the circumferential direction of the annular groove to form a pressure ring to fix the first pivot mechanism. 8 . The water pipe swivel joint according to claim 5 , wherein the first pivot mechanism comprises a first plane bearing and a bearing cover, wherein the bearing cover is disposed on both sides or on one side of the first plane bearing.

9. The water pipe rotary joint according to claim 5, wherein the external joint is further provided with a first support wall and a second support wall, wherein the first support wall is located in the first accommodating cavity, and the bearing cover of the first pivot mechanism can be attached to the first support wall; the second support wall is located in the second accommodating cavity, and the second pivot mechanism can contact the second support wall.

10. The water pipe rotary joint according to claim 9, wherein the pivot assembly is sleeved on the outside of the inner joint, and an adjustable movable gap is provided between the pivot assembly and the outer joint, wherein the movable gap is formed in the first accommodating cavity, which is located between the first pivot mechanism and the first supporting wall of the outer joint; or the movable gap is formed in the second accommodating cavity, which is located between the second pivot mechanism and the second supporting wall of the outer joint.

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