CN212868890U

CN212868890U - Rotary joint

Info

Publication number: CN212868890U
Application number: CN202021247889.0U
Authority: CN
Inventors: 郭震宇; 包锋; 陈开泉; 廖经文; 姚春刚; 邓晖; 陈俊华; 沈建明; 周凌云; 师瑞红
Original assignee: SGIS Songshan Co Ltd
Current assignee: SGIS Songshan Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-04-02
Anticipated expiration: 2030-06-30

Abstract

The utility model relates to a rotary joint, which comprises a fixed joint and a movable joint; a fixed cavity is arranged in the fixed joint; the movable joint comprises a movable sleeve; one end of the movable sleeve is a mounting end; the mounting end is embedded into the fixed joint, and the movable sleeve is communicated with the fixed cavity; the fixed joint comprises a first fixed ring, an elastic piece and an adjusting piece; the first fixing ring and the elastic piece are arranged in the fixing cavity; one side surface of the first fixing ring is abutted against the mounting end, and the other side surface of the first fixing ring is abutted against one end surface of the elastic piece; the other end surface of the elastic part is abutted against the adjusting part; the adjusting piece moves horizontally in the axial direction and compresses or releases the elastic piece; this rotary joint fixes the installation end through first fixed ring to adjust the pressure between first fixed ring and the installation end through elastic component and regulating part, guarantee that the elastic component supports tightly, realize leak-proof purpose, extension rotary joint life.

Description

Rotary joint

Technical Field

The utility model relates to a connection structure field, more specifically says that it relates to a rotary joint.

Background

The rotary joint is mainly used for connecting a fixed pipeline and a rotary motion pipeline, one end of the rotary joint is connected with the fixed pipeline, the other end of the rotary joint is connected with the rotary pipeline, the rotary joint is used for ensuring the free rotation of the rotary pipeline, and the fixed pipeline is communicated with the rotary motion pipeline without leakage, so that the rotary joint is widely applied to pipelines of cooling and drying equipment in industries such as steel, metallurgy, papermaking, glass, printing and dyeing, chemical industry, medicine, petroleum, cigarettes, food, plastics, rubber and the like.

The widely used rotary joint that adopts mechanical seal now, its theory of operation is: under the action of spring tension, the fixing ring axially positions the hollow rotating shaft, and a sliding sealing surface with a self-lubricating function is formed by the contact surface of the graphite fixing ring and the rotating shaft to achieve the purpose of sealing. One disadvantage of prior rotary joints that employ mechanical seals. The fixed ring and the rotating shaft have sliding friction, after the fixed ring is used for a period of time, the fixed ring can be worn and thinned, the spring extends, the pressure of the spring is reduced, the pressure between the fixed ring and the rotating shaft is reduced, the sealing performance is poor, and leakage of media (liquid and gas) can be caused.

SUMMERY OF THE UTILITY MODEL

An it is not enough to prior art existence, the utility model aims to provide a rotary joint, this rotary joint fixes the installation end through first fixed ring to adjust the pressure between first fixed ring and the installation end through elastic component and regulating part, guarantee that the elastic component supports tightly, realize leak-proof purpose, extension rotary joint life.

The above technical purpose of the present invention can be achieved by the following technical solutions: a rotary joint comprises a fixed joint and a movable joint; a fixed cavity is arranged in the fixed joint; the movable joint comprises a movable sleeve; one end of the movable sleeve is a mounting end; the mounting end is embedded into the fixed joint, and the movable sleeve is communicated with the fixed cavity;

the fixed joint comprises a first fixed ring, an elastic piece and an adjusting piece; the first fixing ring and the elastic piece are arranged in the fixing cavity; one side surface of the first fixing ring is abutted against the mounting end, and the other side surface of the first fixing ring is abutted against one end surface of the elastic piece; the other end surface of the elastic part is abutted against the adjusting part; the adjusting member is horizontally moved in the axial direction and compresses or releases the elastic member.

In one embodiment, the fixed joint further comprises an attachment port; the movable sleeve extends to the outside of the fixed joint along the connecting port; the diameter of the mounting end is larger than the caliber of the connecting port.

In one embodiment, a second fixing ring is arranged between the mounting end and the wall of the fixing cavity.

In one embodiment, the resilient member is a compression spring.

In one embodiment, the adjustment member comprises an adjustment shaft; the fixed joint is provided with a through hole; the adjusting shaft is penetrated through a through hole from the outside of the fixed joint and then abuts against the other end face of the elastic piece; the adjusting shaft is provided with an external thread, and the inner surface of the through hole is provided with an internal thread; the adjusting shaft is in threaded connection with the through hole.

In one embodiment, a gasket is further arranged on the fixed joint; the gasket is provided with a through hole; the through hole is coaxial with the through hole; the gasket is provided with internal threads; the adjusting shaft penetrates through the gasket.

In one embodiment, the adjustment member further comprises a nut; the nut is abutted against the elastic piece; the adjusting shaft penetrates through the nut.

To sum up, the utility model discloses following beneficial effect has:

1. the utility model fixes the mounting end through the first fixing ring, and adjusts the pressure of the elastic part through the elastic part and the adjusting part, so as to adjust the pressure between the first fixing ring and the mounting end, ensure the elastic part to be tightly supported and realize the purpose of leakage prevention;

2. the utility model discloses because the installation end is rotatable in fixed chamber, produce sliding friction between installation end and the first solid fixed ring, lead to the wearing and tearing attenuation of first solid fixed ring, when appearing leaking, through the elasticity of adjusting the regulating part adjustment elastic component, can compensate first solid fixed ring's wearing and tearing volume.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the structure of the adjusting member;

in the figure: 1. fixing the joint; 11. a fixed cavity; 12. a first retaining ring; 13. a compression spring; 14. an adjustment member; 141. an adjustment shaft; 142. a nut; 15. a connecting port; 16. a gasket; 17. perforating; 2. a movable joint; 21. an active cannula; 211. an installation end; 3. a second retaining ring.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

Referring to fig. 1, a rotary joint includes a fixed joint 1 and a movable joint 2; a fixed cavity 11 is arranged in the fixed joint 1; the movable joint 2 comprises a movable sleeve 21; one end of the movable sleeve 21 is a mounting end 211; a second fixing ring 3 is arranged between the mounting end 211 and the wall of the fixing cavity 11;

the fixed joint 1 comprises a first fixed ring 12, a compression spring 13, an adjusting piece 14, a connecting port 15 and a gasket 16; the first fixing ring 12 and the compression spring 13 are both arranged in the fixing cavity 11; one side surface of the first fixing ring 12 abuts against the mounting end 211, and the other side surface of the first fixing ring 12 abuts against one end surface of the compression spring 13; the other end surface of the compression spring 13 is abutted against the adjusting piece 14; the movable sleeve 21 extends along the connecting port 15 to the outside of the fixed joint 1; the diameter of the mounting end 211 is larger than the caliber of the connecting port 15, and the movable sleeve 21 is communicated with the fixed cavity 11;

referring to fig. 2, the adjusting member 14 includes an adjusting shaft 141 and a nut 142; the fixed joint 1 is provided with a through hole 17; the adjusting shaft 141 penetrates through the through hole 17 from the outside of the fixed joint 1 and abuts against the other end face of the compression spring 13; the adjusting shaft 141 is provided with an external thread (not shown in the figure), and the inner surface of the through hole 17 is provided with an internal thread (not shown in the figure); the adjusting shaft 141 is in threaded connection with the through hole 17; the gasket 16 is provided with a through hole; said through hole is coaxial with the through hole 17; the gasket 16 is provided with internal threads (not shown in the figure); the adjusting shaft 141 penetrates through the gasket 16; the gasket 16 can be arranged outside the fixed cavity 11, and the adjusting shaft 141 sequentially penetrates through the gasket 16, the through hole 17 and the nut 142; the gasket 16 can also be arranged in the fixing cavity 11, and the adjusting shaft 141 is sequentially provided with the through hole 17, the gasket 16 and the nut 142; the nut 142 abuts against the compression spring 13;

the adjusting member 14 is horizontally moved in the axial direction and compresses or releases the compression spring 13.

One end of the rotary joint is connected with the fixed pipeline, the other end of the rotary joint is connected with the movable sleeve 21, the function is to ensure that the movable sleeve 21 freely rotates, namely the fixed joint 1 is movably connected with the movable joint 2, the diameter of the installation end 211 is larger than the caliber of the connecting port 15, and the installation end 211 can keep the shaft to constantly rotate in the fixed cavity 11 and cannot be separated from the fixed joint 1; a liquid or gas flows in the movable sleeve 21 to the fixed chamber 11. When the mounting end 211 rotates, so that the sliding friction is generated on the surface of the first fixing ring 12 abutting against the mounting end 211 to be thinned, the pressure between the first fixing ring 12 and the mounting end 211 is reduced, the sealing degree is poor, and the leakage is easily caused. At this time. The adjusting shaft 141 is twisted to push the adjusting shaft to the inside of the fixing cavity 11, the adjusting shaft 141, the gasket 16, the through hole 17 and the nut 142 have pretightening force, the adjusting shaft 141 drives the nut 142 to push the compression spring 13, the compression degree of the compression spring 13 is higher, the pressure of the compression spring 13 on the first fixing ring 12 is increased, the pressure between the first fixing ring 12 and the mounting end 211 is maintained, and the sealing degree is ensured to be good. The second fixing ring 3 functions to maintain a degree of sealing between the mounting end 211 and the wall of the fixing chamber 11.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A rotary joint comprises a fixed joint and a movable joint; a fixed cavity is arranged in the fixed joint; the movable joint comprises a movable sleeve; one end of the movable sleeve is a mounting end; the mounting end is embedded into the fixed joint, and the movable sleeve is communicated with the fixed cavity;

the fixing joint is characterized by comprising a first fixing ring, an elastic piece and an adjusting piece; the first fixing ring and the elastic piece are arranged in the fixing cavity; one side surface of the first fixing ring is abutted against the mounting end, and the other side surface of the first fixing ring is abutted against one end surface of the elastic piece; the other end surface of the elastic part is abutted against the adjusting part; the adjusting member is horizontally moved in the axial direction and compresses or releases the elastic member.

2. The swivel joint of claim 1, wherein the fixed joint further comprises an attachment port; the movable sleeve extends to the outside of the fixed joint along the connecting port; the diameter of the mounting end is larger than the caliber of the connecting port.

3. The swivel joint of claim 1, wherein a second securing ring is provided between the mounting end and the wall of the securing chamber.

4. The rotary union of claim 1, wherein said resilient member is a compression spring.

5. The swivel joint of claim 1, wherein said adjustment member comprises an adjustment shaft; the fixed joint is provided with a through hole; the adjusting shaft is penetrated through a through hole from the outside of the fixed joint and then abuts against the other end face of the elastic piece; the adjusting shaft is provided with an external thread, and the inner surface of the through hole is provided with an internal thread; the adjusting shaft is in threaded connection with the through hole.

6. The swivel joint of claim 5, wherein the fixed joint further comprises a spacer; the gasket is provided with a through hole; the through hole is coaxial with the through hole; the gasket is provided with internal threads; the adjusting shaft penetrates through the gasket.

7. The swivel joint of claim 5, wherein the adjustment member further comprises a nut; the nut is abutted against the elastic piece; the adjusting shaft penetrates through the nut.