Rotary shaft of rotary joint anti-cutting sealing ring

Abstract

The utility model relates to a rotating shaft of an anti-cutting sealing ring of a rotating joint, which belongs to the technical field of rotating joints and comprises a rotating shaft and a sleeve, a snap spring groove is arranged on the surface of the rotating shaft, and a first anti-cutting slope is arranged on one side of the snap spring groove far away from a mounting end. According to the rotating shaft of the anti-cutting sealing ring of the rotating joint, the first anti-cutting slope is arranged on the left side of the snap spring groove in the surface of the rotating shaft, and the second anti-cutting slope is arranged on the left side of the annular outer groove, so that when the sleeve is mounted on the surface of the rotating shaft, the sealing ring on the inner wall of the sleeve is prevented from being cut through the first anti-cutting slope and the second anti-cutting slope; the utility model relates to a rotary joint, which solves the problems that when a rotating shaft clamp spring groove of an existing rotary joint is provided with a right angle on two sides, the inner diameter of a sealing ring and the outer diameter of a rotating shaft have a certain compression amount, so that when the sealing ring passes through the left side of the clamp spring groove, the right angle can cut the sealing ring, the sealing ring is easy to damage, leakage is generated, and potential safety hazards are caused.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary joints, in particular to a rotary shaft of a rotary joint anti-cutting sealing ring. Background Art

[0002] Hydraulic pipe adapters are important connecting parts in hydraulic systems. They are mainly used to connect hydraulic components and pipelines of different sizes and shapes. In hydraulic systems, hydraulic adapters play a key role in connecting hydraulic components and pipelines due to their different sizes and shapes. There are many types of hydraulic pipe adapters, such as hydraulic hoses, high-pressure ball valves, quick connectors, ferrule-type pipe connectors, welding-type pipe connectors, high-pressure hoses, transition-type pipe connectors, three-way pipe connectors, non-standard pipe connectors, flared pipe connectors, right-angle pipe connectors, swivel pipe connectors, etc.

[0003] Among them, rotary joints are widely used in metallurgy, petrochemical industry, engineering machinery, agricultural machinery, non-ferrous metals, etc. Users select rotary joints of different materials and sizes according to different working media, on-site ambient temperature, working pressure level, and flow requirements of working media. All rotary joints are divided into two major parts, a rotating shell and a rotating shaft. The shell and the shaft fit closely with a small gap. The two parts are combined into a complete set of products. Its characteristics are: when any part is fixed, the other part can rotate 360 ​​degrees around it, and it rotates while working without leakage. Because the rotary joint can rotate 360 ​​degrees, it has no special requirements for the installation site and installation direction, so it is widely used.

[0004] However, at the retaining spring groove of the rotating shaft of the existing rotary joint, since the two sides of the retaining spring groove of the rotating shaft are at right angles, the inner diameter of the sealing ring and the outer diameter of the rotating shaft have a compression amount of 0.6mm-0.8mm. Therefore, when the sealing ring passes the left side of the retaining spring groove, the sealing ring will be cut at the right angle, which can easily damage the O-ring and cause leakage, posing a safety hazard. In view of this, the present application proposes a rotating shaft of a rotary joint that can prevent the sealing ring from being cut. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a rotating shaft of a rotary joint with an anti-cut sealing ring, which has the advantages of preventing the sealing ring from being cut, etc., and solves the problem of the retaining spring groove of the rotating shaft of the existing rotary joint. Since the two sides of the retaining spring groove of the rotating shaft are right angles, the inner diameter of the sealing ring and the outer diameter of the rotating shaft have a certain amount of compression. Therefore, when the sealing ring passes the left side of the retaining spring groove, the sealing ring will be cut at the right angle, which can easily damage the sealing ring and cause leakage, posing a safety hazard.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotating shaft of a rotary joint anti-cut sealing ring, comprising a rotating shaft and a sleeve, a retaining ring groove is provided on the surface of the rotating shaft, a first anti-cut slope is provided on the side of the retaining ring groove away from the mounting end, an annular outer groove is provided on the surface of the rotating shaft, a second anti-cut slope is provided on the side of the annular outer groove away from the mounting end, a sleeve is sleeved on the surface of the rotating shaft, and two sealing rings are fixedly installed on the inner side wall of the sleeve.

[0007] Furthermore, an inner side wall of the sleeve is provided with an annular inner groove matched with the annular outer groove, and the two sealing rings are located on both sides of the annular inner groove.

[0008] Furthermore, an inner shaft channel is provided at one end of the rotating shaft, and a connecting hole communicating with the inner shaft channel is provided on the surface of the annular outer groove.

[0009] Furthermore, an external hexagonal stopper is fixedly mounted on the surface of the rotating shaft, and one side of the sleeve is in contact with the external hexagonal stopper.

[0010] Furthermore, an inner retaining ring is sleeved on the surface of the rotating shaft, and one side of the inner retaining ring is in contact with one side of the sleeve.

[0011] Furthermore, an external retaining ring is embedded in the interior of the retaining ring groove, and one side of the external retaining ring is in contact with one side of the internal retaining ring.

[0012] Furthermore, a connecting pipe is fixedly mounted on the surface of the sleeve, a connecting external thread is provided on the surface of the connecting pipe, and an axis external thread is provided on the surface of the rotating shaft away from one end of the sleeve.

[0013] Compared with the prior art, the utility model provides a rotary shaft of a rotary joint anti-cutting sealing ring, which has the following beneficial effects:

[0014] The rotary shaft of the sealing ring of the rotary joint is prevented from being cut. A first anti-cutting slope is arranged on the left side of the retaining spring groove on the surface of the rotary shaft, and a second anti-cutting slope is arranged on the left side of the annular outer groove. When the sleeve is installed on the surface of the rotary shaft, the sealing ring on the inner wall of the sleeve is prevented from being cut by the first anti-cutting slope and the second anti-cutting slope. This solves the problem of the retaining spring groove of the rotary shaft of the existing rotary joint. When the two sides of the retaining spring groove of the rotary shaft are right angles, the inner diameter of the sealing ring and the outer diameter of the rotary shaft have a certain amount of compression. Therefore, when the sealing ring passes through the left side of the retaining spring groove, the right angle will cut the sealing ring, which is easy to damage the sealing ring, causing leakage and posing a safety hazard. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2This is a front view cross-sectional view of the rotating shaft of the utility model;

[0017] Figure 3 It is a three-dimensional schematic diagram of the rotating shaft of the utility model.

[0018] In the figure: 1. rotating shaft; 2. retaining ring groove; 3. first anti-cutting slope; 4. annular outer groove; 5. second anti-cutting slope; 6. sleeve; 7. sealing ring; 8. annular inner groove; 9. inner passage of the shaft; 10. connecting hole; 11. external hexagonal stopper; 12. inner retaining ring; 13. outer retaining ring; 14. connecting pipe; 15. connecting external thread; 16. external thread of the shaft. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 A rotating shaft of a rotary joint with an anti-cut sealing ring comprises a rotating shaft 1 and a sleeve 6. A retaining ring groove 2 is provided on the surface of the rotating shaft 1. A first anti-cut slope 3 is provided on the side of the retaining ring groove 2 away from the mounting end. An annular outer groove 4 is provided on the surface of the rotating shaft 1. A second anti-cut slope 5 is provided on the side of the annular outer groove 4 away from the mounting end. The surface of the rotating shaft 1 is sleeved with a sleeve 6. Two sealing rings 7 are fixedly installed on the inner side wall of the sleeve 6.

[0021] A first anti-cut slope 3 and a second anti-cut slope 5 are provided on the side of the retaining ring groove 2 and the annular outer groove 4 away from the installation end, that is, the left side. The first anti-cut slope 3 and the second anti-cut slope 5 are used to change the left right angle of the retaining ring groove 2 and the annular outer groove 4 into a bevel, so that when the sleeve 6 is put on the surface of the rotating shaft 1, the sealing ring 7 slides over the first anti-cut slope 3 and the second anti-cut slope 5 and will not be cut, thereby avoiding the hidden danger of leakage caused by damage to the sealing ring 7 during assembly.

[0022] Among them, the inner wall of the sleeve 6 is provided with an annular inner groove 8 adapted to the annular outer groove 4, two sealing rings 7 are located on both sides of the annular inner groove 8, and two sealing rings 7 are located at both ends of the annular outer groove 4 and the annular inner groove 8 to seal the annular outer groove 4 and the annular inner groove 8 to prevent leakage.

[0023] At the same time, an inner shaft channel 9 is opened at one end of the rotating shaft 1, and a connecting hole 10 connected to the inner shaft channel 9 is opened on the surface of the annular outer groove 4. The inner shaft channel 9 is connected to the inner spaces of the annular outer groove 4 and the annular inner groove 8 through the connecting hole 10.

[0024] An external hexagonal stopper 11 is fixedly mounted on the surface of the rotating shaft 1 , one side of the sleeve 6 contacts the external hexagonal stopper 11 , and the left side position of the sleeve 6 is limited by the external hexagonal stopper 11 .

[0025] Secondly, an inner retaining ring 12 is sleeved on the surface of the rotating shaft 1 , one side of the inner retaining ring 12 contacts one side of the sleeve 6 , and the right side position of the sleeve 6 is limited by the inner retaining ring 12 .

[0026] At the same time, an external retaining ring 13 is embedded in the inner part of the retaining ring groove 2, and one side of the external retaining ring 13 contacts one side of the inner retaining ring 12, so that the external retaining ring 13 is clamped in the inner part of the retaining ring groove 2 to limit the position of the inner retaining ring 12.

[0027] Finally, a connecting pipe 14 is fixedly mounted on the surface of the sleeve 6 , a connecting external thread 15 is provided on the surface of the connecting pipe 14 , and a shaft external thread 16 is provided on the surface of the end of the rotating shaft 1 away from the sleeve 6 .

[0028] When this embodiment is in use, the first anti-cut slope 3 and the second anti-cut slope 5 are provided on the side of the retaining ring groove 2 and the annular outer groove 4 away from the installation end, that is, the left side. The left right angles of the retaining ring groove 2 and the annular outer groove 4 are changed into a bevel through the first anti-cut slope 3 and the second anti-cut slope 5, so that when the sleeve 6 is sleeved on the surface of the rotating shaft 1, the sealing ring 7 slides over the first anti-cut slope 3 and the second anti-cut slope 5 and will not be cut, thereby avoiding damage to the sealing ring 7 during assembly, and completely solving the problem of leakage due to assembly. Moreover, it is very easy to assemble, which also shortens the assembly time, improves efficiency, makes assembly very easy, and reduces labor intensity.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary shaft of a rotary joint anti-cutting sealing ring, comprising a rotary shaft (1) and a sleeve (6), characterized in that: The surface of the rotating shaft (1) is provided with a retaining ring groove (2), and a first anti-cutting slope (3) is provided on the side of the retaining ring groove (2) away from the mounting end; the surface of the rotating shaft (1) is provided with an annular outer groove (4), and a second anti-cutting slope (5) is provided on the side of the annular outer groove (4) away from the mounting end; the surface of the rotating shaft (1) is sleeved with a sleeve (6), and two sealing rings (7) are fixedly mounted on the inner side wall of the sleeve (6).

2. The rotating shaft of the anti-cutting sealing ring of the rotary joint according to claim 1, characterized in that: The inner side wall of the sleeve (6) is provided with an annular inner groove (8) matched with the annular outer groove (4), and the two sealing rings (7) are located on both sides of the annular inner groove (8).

3. The rotary shaft of the anti-cutting sealing ring of the rotary joint according to claim 1, characterized in that: An inner shaft channel (9) is provided at one end of the rotating shaft (1), and a connecting hole (10) communicating with the inner shaft channel (9) is provided on the surface of the annular outer groove (4).

4. The rotary shaft of the anti-cutting sealing ring of a rotary joint according to claim 1, characterized in that: An external hexagonal stopper (11) is fixedly mounted on the surface of the rotating shaft (1), and one side of the sleeve (6) is in contact with the external hexagonal stopper (11).

5. The rotary shaft of the anti-cutting sealing ring of a rotary joint according to claim 1, characterized in that: An inner retaining ring (12) is sleeved on the surface of the rotating shaft (1), and one side of the inner retaining ring (12) is in contact with one side of the sleeve (6).

6. The rotary shaft of the anti-cutting sealing ring of a rotary joint according to claim 5, characterized in that: An external retaining ring (13) is embedded inside the retaining ring groove (2), and one side of the external retaining ring (13) is in contact with one side of the internal retaining ring (12).

7. The rotary shaft of the anti-cutting sealing ring of a rotary joint according to claim 1, characterized in that: A connecting pipe (14) is fixedly mounted on the surface of the sleeve (6), a connecting external thread (15) is provided on the surface of the connecting pipe (14), and an external shaft thread (16) is provided on the surface of the rotating shaft (1) at one end away from the sleeve (6).

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