Single-channel rotary joint

Abstract

The utility model discloses a single-channel rotary joint, which relates to the technical field of rotary joints and comprises a sleeve, a sealing section is arranged on one side of the sleeve, a communication section is arranged on the other side of the sleeve, a rotary rod is arranged in the sleeve, a connecting section is arranged at the outer side end of the rotary rod, the inner side end of the rotary rod extends into the sleeve, and the inner side end of the rotary rod extends into the sleeve. A communicating groove is formed in the middle of the interior of the rotating rod in a penetrating mode, the outer side end of the communicating groove communicates with an inner cavity of the connecting section, the inner side end of the communicating groove communicates with the connecting section, and a through hole is formed in the position, corresponding to the communicating section, of the side wall of the sleeve; a bottom plate is arranged on the side, close to the communicating section, of the sleeve, and an inner sealing ring is arranged at the position, corresponding to the sealing section, of the inner side end of the rotating rod, so that the high-temperature-resistant and wear-resistant performance of a sealing element is improved, the centering performance is good, the lateral pressure is smaller, the radial wear-resistant performance is improved, and the service life of the rotating joint is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary joints, and particularly relates to a single-pass rotary joint. Background Technique

[0002] A single-pass rotary joint generally refers to a mechanical device that allows a pipeline to maintain continuous fluid transmission during rotation. The type and design of the single-pass rotary joint depend on the specific requirements of its application, such as the type of transmission medium, working pressure, temperature range, rotation speed, and angle, etc. Due to the structural design, the radial sealing surface of traditional rotary joints wears after long-term use, affecting the service life of the rotary joint. Content of the Utility Model

[0003] The purpose of the utility model is to provide a single-pass rotary joint to solve the problem that the radial sealing surface of the traditional rotary joint wears after long-term use due to the structural design, affecting the service life of the rotary joint as mentioned in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: a single-pass rotary joint, including a sleeve. One side of the sleeve is provided with a sealing section, and the other side of the sleeve is provided with a connecting section. A rotating rod is arranged inside the sleeve. The outer end of the rotating rod is provided with a connecting section, and the inner end of the rotating rod extends into the inside of the sleeve. A communication groove is penetrated through the middle position inside the rotating rod. The outer end of the communication groove is communicated with the inner cavity of the connecting section, and the inner end of the communication groove is communicated with the connecting section. A through hole is opened at the position of the sleeve wall corresponding to the connecting section. A bottom plate is arranged on one side of the sleeve close to the connecting section. An inner sealing ring is arranged at the position of the inner end of the rotating rod corresponding to the sealing section.

[0005] Preferably, a limiting hoop is clamped at the inner end of the rotating rod. The limiting hoop is composed of two semi-circular structures in the front and back. The two limiting hoops are fixedly connected by bolts. A limiting edge is arranged on the inner wall of the connecting section and on one side of the limiting hoop, and a limiting ring is arranged on the inner wall of the connecting section and on the other side of the limiting hoop.

[0006] Preferably, a first outer sealing ring is arranged on the outer surface of one side of the sleeve close to the connecting section, and a second outer sealing ring is arranged on the outer surface of one side of the bottom plate close to the sleeve and outside the sleeve.

[0007] Preferably, a connecting thread is arranged on the inner wall of the connecting section, and a connecting sealing ring is arranged on the outer circumference of the inner end of the connecting section and outside the communication groove.

[0008] Preferably, connecting bolt holes are penetrated through the outer edge of the bottom plate.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows: Instead of the traditional rotary joint structure design, a planar seal design is adopted, and a copper shell structure is used to improve the high-temperature and wear-resistant performance of the sealing element, with good centering, smaller lateral pressure, improved radial wear resistance, and extended service life of the rotary joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is an axonometric view of the main structure of the present utility model;

[0011] Figure 2 is an axonometric sectional view of the main structure of the present utility model;

[0012] Figure 3 is a front sectional view of the main structure of the present utility model;

[0013] Figure 4 is a front view schematic diagram of the main structure of the present utility model;

[0014] Figure 5 is a top sectional view of the main structure of the present utility model.

[0015] In the figure: 1 - sleeve, 2 - sealing section, 3 - connecting section, 4 - rotating rod, 5 - connecting section, 6 - connecting section, 7 - through hole, 8 - bottom plate, 9 - inner sealing ring, 10 - limiting hoop, 11 - limiting edge, 12 - limiting ring, 13 - first outer sealing ring, 14 - second outer sealing ring, 15 - connecting thread, 16 - connecting sealing ring, 17 - connecting bolt hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0017] Please refer to Figures 1-5, the present utility model provides a single - passage rotary joint, including a sleeve 1. One side of the sleeve 1 is provided with a sealing section 2, and the other side of the sleeve 1 is provided with a communicating section 3. A rotating rod 4 is arranged inside the sleeve 1. A connecting section 5 is arranged at the outer end of the rotating rod 4. The inner end of the rotating rod 4 extends into the inside of the sleeve 1. A communicating groove 6 is arranged through the middle position inside the rotating rod 4. The outer end of the communicating groove 6 is communicated with the inner cavity of the connecting section 5, and the inner end of the communicating groove 6 is communicated with the connecting section 3. A through - hole 7 is opened at the position of the side wall of the sleeve 1 corresponding to the communicating section 3. A bottom plate 8 is arranged on one side of the sleeve 1 close to the communicating section 3. An inner sealing ring 9 is arranged at the position of the inner end of the rotating rod 4 corresponding to the sealing section 2.

[0018] During use, the bottom plate 8 is fixedly arranged at a position suitable for the medium flow direction through bolts. The bottom plate 8 and the sleeve 1 are hermetically connected by welding. The medium is circulated through the pipeline to the through - groove 6 inside the rotating rod 4 through the connecting section 5. The rotating rod 4 is rotatably connected to the inside of the sleeve 1 through the sealing section 2. An inner sealing ring 9 is arranged between the rotating rod 4 and the sealing section 2 to ensure the sealing between the rotating rod 4 and the sealing section 2. The medium is input into the communicating section 3 inside the sleeve 1 through the through - groove 6. A through - hole 7 is opened at the position of one side of the sleeve 1 corresponding to the communicating section 3. The medium is input into the through - hole 7 through the communicating section 3 and then output through the through - hole 7.

[0019] A limiting hoop 10 is clamped at the inner end of the rotating rod 4. The limiting hoop 10 is composed of two semi - circular structures in the front and back. The two limiting hoops 10 are fixedly connected by bolts. A limiting edge 11 is arranged on the inner wall of the communicating section 3 on one side of the limiting hoop 10, and a limiting ring 12 is arranged on the inner wall of the communicating section 3 on the other side of the limiting hoop 10. By clamping the limiting hoop 10 at the inner side of the rotating rod 4, arranging the limiting edge 11 on one side of the limiting hoop 10 inside the communicating section 3, the limiting hoop 10 abuts against the limiting edge 11, and clamping the limiting ring 12 on the other side of the limiting hoop 10 inside the communicating section 3, the limiting ring 12 abuts against the limiting hoop 10. The limiting ring 12 limits one side of the limiting hoop 10, and the limiting edge 11 limits the other side of the limiting hoop 10, so as to limit the position of the rotating rod 4 arranged inside the sleeve 1 through the limiting hoop 10.

[0020] A first outer sealing ring 13 is arranged on the outer surface of one side of the sleeve 1 close to the communicating section 3, and a second outer sealing ring 14 is arranged on the outer surface of one side of the bottom plate 8 close to the sleeve 1 and outside the sleeve 1. The first outer sealing ring 13 seals between the outside of the through - hole 7 and the medium - communicating device on one side, and the second outer sealing ring 14 seals between the outside of the through - hole 7 and the medium - communicating device on the other side.

[0021] The inner wall of the connecting section 5 is provided with a connecting thread 15. On the inner side end of the connecting section 5 and around the outer side of the communication groove 6, a connecting sealing ring 16 is provided. The medium pipeline is fixedly arranged inside the connecting section 5 through the connecting thread 15, and the connecting sealing ring 16 is arranged inside the connecting section 5 to ensure the sealing performance between the pipeline and the connecting section 5.

[0022] Through holes for connecting bolts 17 are provided through the outer edge of the bottom plate 8. The bottom plate 8 is fixedly arranged on the medium communication device by bolts passing through the through holes for connecting bolts 17.

[0023] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A single-channel rotary joint, characterized in that: The invention comprises a sleeve (1), a sealing section (2) is provided on one side of the sleeve (1), a connecting section (3) is provided on the other side of the sleeve (1), a rotating rod (4) is provided inside the sleeve (1), a connecting section (5) is provided at the outer end of the rotating rod (4), the inner end of the rotating rod (4) extends into the interior of the sleeve (1), a connecting groove (6) is provided through the middle position of the interior of the rotating rod (4), the outer end of the connecting groove (6) is connected to the inner cavity of the connecting section (5), the inner end of the connecting groove (6) is connected to the connecting section (3), a through hole (7) is provided on the side wall of the sleeve (1) at a position corresponding to the connecting section (3), a bottom plate (8) is provided on the side of the sleeve (1) close to the connecting section (3), and an inner sealing ring (9) is provided at a position corresponding to the sealing section (2) at the inner end of the rotating rod (4).

2. A single-channel rotary joint according to claim 1, characterized in that: The inner end of the rotating rod (4) is provided with a clamping limit hoop (10), the limit hoop (10) is a front and rear half-circle structure, the two limit hoops (10) are fixedly connected by bolts, the inner wall of the connecting section (3) and on one side of the limit hoop (10) are provided with a limit edge (11), and the inner wall of the connecting section (3) and on the other side of the limit hoop (10) are provided with a limit ring (12).

3. A single-channel rotary joint according to claim 1, characterized in that: A first outer sealing ring (13) is provided on the outer surface of one side of the sleeve (1) close to the connecting section (3), and a second outer sealing ring (14) is provided on the outer surface of one side of the bottom plate (8) close to the sleeve (1) and on the outside of the sleeve (1).

4. A single-channel rotary joint according to claim 1, characterized in that: The inner wall of the connecting section (5) is provided with a connecting thread (15), and the inner end of the connecting section (5) and a connecting sealing ring (16) are provided around the outer side of the connecting groove (6).

5. A single-channel rotary joint according to claim 1, characterized in that: A connecting bolt hole (17) is provided through the outer edge of the bottom plate (8).

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