High-reliability axial surface sealing rotary joint

By using the rotating assembly to drive the extrusion assembly and wedge block to push the design of the pinch rod in the rotating joint, the problem of reducing sealing properties caused by wear of the sealing ring is solved, and the service life and sealing effect of the rotating joint are improved.

CN222334765UActive Publication Date: 2025-01-10BEIJING HENGSHENGWEIYE TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202421175925.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-28
Publication Date
2025-01-10
Estimated Expiration
2034-05-28

AI Technical Summary

Technical Problem

The sealing ring of the existing rotary joint is prone to wear after long-term use, resulting in reduced sealing and leakage of liquid media, and short service life. The existing technology has not effectively solved this problem.

Method used

A high-reliability shaft sealing rotary joint is designed, which drives the extrusion assembly to rotate through the rotating assembly, generates centrifugal force to deform and expand the sealing assembly, increases the tightness with the rotating assembly, and pushes the pin through the wedge block to make the The sealing ring is extruded to improve the sealing effect.

Benefits of technology

It effectively avoids the reduction in sealing during rotation, improves the service life of the joint and enhances the sealing effect, and prevents liquid media from leaking.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222334765U_ABST
    Figure CN222334765U_ABST
Patent Text Reader

Abstract

The utility model discloses a high-reliability axial surface sealing rotary joint, and relates to the technical field of sealing joints. The device comprises a shell, a rotating assembly is arranged in the shell, a sealing assembly is arranged in the shell, the inner side of the sealing assembly is attached to the outer surface of the rotating assembly, and an extrusion assembly is fixedly connected to the outer surface of the rotating assembly. The extrusion assembly is driven to rotate through rotation of the rotating assembly, centrifugal force can be generated in the rotating process of the rotating assembly, then the extrusion assembly can be driven to move and extrude the sealing assembly, when one side of the sealing assembly is extruded, the sealing assembly deforms and expands towards the inner ring, and therefore the sealing effect is improved. The inner side of the sealing assembly is attached to the outer surface of the rotating assembly, so that the tightness between the sealing assembly and the rotating assembly can be improved when the sealing assembly is expanded, the sealing performance of the rotating assembly is prevented from being reduced in the rotating process, and the service life of the rotating assembly is prolonged.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing joints, and in particular relates to a high-reliability axial surface sealing rotary joint. Background Art

[0002] The rotary joint is a sealed rotary connector that can rotate 360° to transport the medium. With a complete set of rotary joints, complex movements can also be coordinated. It can be used safely in places where it is difficult to install hoses or places where huge leaks are feared, and in harsh environmental conditions such as high temperature and high pressure.

[0003] The rotary joint is generally formed by sleeve-jointing the core shaft and the outer shell, and then fitting a sealing ring to seal between them. However, the sealing ring is prone to wear and tear after long-term use, which reduces the sealing performance. The liquid medium is prone to leakage during the rotation of the rotary joint, thereby reducing its service life.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a high-reliability axial surface sealing rotary joint to overcome the above-mentioned technical problems existing in the existing related technology.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a high-reliability axial surface sealing rotary joint, comprising a shell, a rotating component is arranged inside the shell, a sealing component is arranged inside the shell, the inner side of the sealing component is fitted with the outer surface of the rotating component, the outer surface of the rotating component is fixedly connected with an extrusion component, and one side of the extrusion component is fitted with one side of the sealing component.

[0008] Furthermore, the rotating assembly includes a bearing, the outer surface of the bearing is fixedly mounted on the inside of the housing, an inner tube is fixedly provided on the inside of the bearing, and one end of the inner tube is fixedly connected to a flange.

[0009] Furthermore, the sealing assembly comprises a sealing groove, the sealing groove is opened on the inner wall of the shell, and a sealing ring is arranged inside the sealing groove.

[0010] Furthermore, the extrusion assembly comprises a fixing ring, the interior of the fixing ring is fixedly connected to the outer surface of the inner tube, a sliding groove is provided at the top end of the fixing ring, and a wedge block is slidably provided inside the sliding groove.

[0011] Furthermore, the extrusion assembly further comprises an installation groove, the inner wall of the installation groove is provided with a connecting groove, a push rod is slidably arranged inside the connecting groove, and one end of the push rod is in contact with one side of the sealing ring;

[0012] One end of the push rod is fixedly connected with a wedge-shaped disk, and one side of the wedge-shaped disk is in contact with one side of the wedge-shaped block.

[0013] Furthermore, an annular groove is provided on the inner wall of the shell, and a mounting hole is provided on the outer surface of the shell, and the interior of the mounting hole is communicated with the interior of the annular groove.

[0014] Furthermore, a through groove is provided inside the inner tube, and one side of the through groove is connected to the inside of the annular groove.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model drives the extrusion component to rotate by the rotation of the rotating component. During the rotation of the rotating component, the centrifugal force can be generated, thereby driving the extrusion component to move and squeeze the sealing component. When one side of the sealing component is squeezed, it deforms and expands toward the inner circle. Since the inner side of the sealing component fits the outer surface of the rotating component, the tightness between the sealing component and the rotating component can be increased when the sealing component expands, thereby avoiding the reduction of the sealing performance of the rotating component during the rotation process and increasing its service life.

[0017] 2. The utility model pushes the wedge-shaped disk to move by the wedge-shaped block. When the wedge-shaped disk moves, it can drive the push rod fixedly connected to one side of it to move. Since one end of the push rod fits with one side of the sealing ring, when the push rod moves, it can squeeze the sealing ring, causing it to deform and expand toward the inner ring, so that the sealing ring and the inner tube fit more closely, thereby improving the sealing effect.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the utility model embodiments, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2It is a structural schematic diagram of the utility model from a right side viewing angle;

[0022] Figure 3 It is a structural schematic diagram of a partial cross-section of the rotating assembly of the utility model;

[0023] Figure 4 For the utility model Figure 3 A magnified schematic diagram of the local structure at point A;

[0024] Figure 5 It is a schematic cross-sectional view of the structure of the utility model from a top view;

[0025] Figure 6 It is a structural schematic diagram of the utility model from a left viewing angle.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Housing; 2. Rotating assembly; 201. Bearing; 202. Inner tube; 203. Flange; 3. Sealing assembly; 301. Sealing groove; 302. Sealing ring; 4. Extrusion assembly; 401. Fixed ring; 402. Sliding groove; 403. Wedge block; 404. Mounting groove; 405. Connecting groove; 406. Push rod; 407. Wedge disk; 5. Annular groove; 6. Mounting hole; 7. Through groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the described embodiments are only part of the utility model embodiments, 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.

[0029] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0030] See also Figure 1-Figure 6 As shown, the utility model is a high-reliability axial surface sealing rotary joint, including a shell 1, a rotating component 2 is arranged inside the shell 1, a sealing component 3 is arranged inside the shell 1, the inner side of the sealing component 3 is fitted with the outer surface of the rotating component 2, the outer surface of the rotating component 2 is fixedly connected with an extrusion component 4, and one side of the extrusion component 4 is fitted with one side of the sealing component 3.

[0031] When in use, by fixing the rotating component 2 to the device and rotating it, the extrusion component 4 fixedly connected to its outer surface can be driven to rotate. During the rotation of the rotating component 2, centrifugal force can be generated, thereby driving the extrusion component 4 to move and squeeze the sealing component 3. When one side of the sealing component 3 is squeezed, it deforms and expands toward the inner circle. Since the inner side of the sealing component 3 fits the outer surface of the rotating component 2, when the sealing component 3 expands, the tightness between it and the rotating component 2 can be increased, thereby improving its sealing effect.

[0032] The utility model drives the extrusion component 4 to rotate by the rotation of the rotating component 2. During the rotation process, the rotating component 2 can generate centrifugal force, thereby driving the extrusion component 4 to move and causing it to squeeze the sealing component 3. When one side of the sealing component 3 is squeezed, it deforms and expands toward the inner circle. Since the inner side of the sealing component 3 fits with the outer surface of the rotating component 2, the tightness between the sealing component 3 and the rotating component 2 can be increased when the sealing component 3 expands, thereby avoiding the reduction of the sealing performance of the rotating component 2 during the rotation process and increasing its service life.

[0033] In one embodiment, for the above-mentioned rotating component 2, the rotating component 2 includes a bearing 201, the outer surface of the bearing 201 is fixedly installed with the interior of the housing 1, an inner tube 202 is fixedly provided inside the bearing 201, and one end of the inner tube 202 is fixedly connected with a flange 203.

[0034] The flange 203 facilitates the fixed installation of the inner tube 202 and the connecting device. Since the inner tube 202 is arranged on the inner side of the bearing 201, the friction between the inner tube 202 and the outer shell 1 can be reduced when the inner tube 202 rotates.

[0035] In one embodiment, for the sealing assembly 3 , the sealing assembly 3 includes a sealing groove 301 . The sealing groove 301 is opened on the inner wall of the housing 1 . A sealing ring 302 is disposed inside the sealing groove 301 .

[0036] The sealing groove 301 and the sealing ring 302 are both provided in multiple groups, thereby ensuring the sealing performance between the sealing groove 301 and the inner tube 202 and achieving a better use effect.

[0037] In one embodiment, for the above-mentioned extrusion assembly 4, the extrusion assembly 4 includes a fixing ring 401, the interior of the fixing ring 401 is fixedly connected to the outer surface of the inner tube 202, a sliding groove 402 is opened at the top of the fixing ring 401, and a wedge block 403 is slidably arranged inside the sliding groove 402.

[0038] When the inner tube 202 rotates, it can drive the fixed ring 401 fixedly connected to its outer surface to rotate. Since a sliding groove 402 is provided inside the fixed ring 401, and a wedge block 403 is slidingly provided inside the sliding groove 402, when the fixed ring 401 rotates, the centrifugal force generated by it can drive the wedge block 403 to move inside the sliding groove 402, so as to facilitate the stable operation of the extrusion assembly 4.

[0039] In one embodiment, for the extrusion assembly 4, the extrusion assembly 4 further includes a mounting groove 404, the inner wall of the mounting groove 404 is provided with a connecting groove 405, a push rod 406 is slidably provided inside the connecting groove 405, and one end of the push rod 406 is in contact with one side of the sealing ring 302;

[0040] One end of the push rod 406 is fixedly connected to a wedge-shaped disk 407 , and one side of the wedge-shaped disk 407 is in contact with one side of the wedge block 403 .

[0041] Since one side of the wedge block 403 is in contact with one side of the wedge disk 407, when the wedge block 403 moves, it can push the wedge disk 407 to move. When the wedge disk 407 moves, it can drive the push rod 406 fixedly connected to one side thereof to move. Since one end of the push rod 406 is in contact with one side of the sealing ring 302, when the push rod 406 moves, it can squeeze the sealing ring 302, causing it to deform and expand toward the inner ring, thereby making the sealing ring 302 fit more closely with the inner tube 202, thereby improving the sealing effect.

[0042] In one embodiment, for the above-mentioned housing 1 , an annular groove 5 is formed on the inner wall of the housing 1 , and a mounting hole 6 is formed on the outer surface of the housing 1 , and the interior of the mounting hole 6 is communicated with the interior of the annular groove 5 .

[0043] The arrangement of the mounting holes 6 facilitates the fixed installation with the external pipe, and the mounting holes 6 are arranged in multiple groups, which facilitates the fixed installation with multiple pipes, which is more convenient.

[0044] In one embodiment, for the inner tube 202 , a through groove 7 is provided inside the inner tube 202 , and one side of the through groove 7 is connected to the inside of the annular groove 5 .

[0045] When the external pipeline transports the medium to the inside of the mounting hole 6, it enters the inside of the annular groove 5 through the mounting hole 6, and then enters the inside of the through groove 7 through the annular groove 5, thereby completing the medium transportation, which is relatively convenient.

[0046] According to the above technical scheme, 1. the rotation of the rotating component 2 drives the extrusion component 4 to rotate. During the rotation process, the rotating component 2 can generate centrifugal force, thereby driving the extrusion component 4 to move and squeeze the sealing component 3. When one side of the sealing component 3 is squeezed, it deforms and expands toward the inner ring. Since the inner side of the sealing component 3 fits with the outer surface of the rotating component 2, when the sealing component 3 expands, the tightness between it and the rotating component 2 can be increased, thereby avoiding the decrease of the sealing performance of the rotating component 2 during the rotation process, and improving its service life; 2. The wedge block 403 pushes the wedge disk 407 to move. When the wedge disk 407 moves, it can drive the push rod 406 fixedly connected to one side thereof to move. Since one end of the push rod 406 fits with one side of the sealing ring 302, when the push rod 406 moves, it can squeeze the sealing ring 302, deform it, and expand it toward the inner ring, so that the sealing ring 302 and the inner tube 202 fit more closely, thereby improving the sealing effect.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-reliability axial surface sealing rotary joint, comprising a housing (1), characterized in that: A rotating assembly (2) is arranged inside the housing (1), a sealing assembly (3) is arranged inside the housing (1), the inner side of the sealing assembly (3) is in contact with the outer surface of the rotating assembly (2), an extrusion assembly (4) is fixedly connected to the outer surface of the rotating assembly (2), and one side of the extrusion assembly (4) is in contact with one side of the sealing assembly (3).

2. A high reliability axial surface seal rotary joint according to claim 1, characterized in that: The rotating assembly (2) comprises a bearing (201), the outer surface of the bearing (201) being fixedly mounted inside the housing (1), an inner tube (202) being fixedly arranged inside the bearing (201), and one end of the inner tube (202) being fixedly connected to a flange (203).

3. A high reliability axial surface sealing rotary joint according to claim 2, characterized in that: The sealing assembly (3) comprises a sealing groove (301), wherein the sealing groove (301) is formed on the inner wall of the housing (1), and a sealing ring (302) is arranged inside the sealing groove (301).

4. A high reliability axial surface seal rotary joint according to claim 3, characterized in that: The extrusion assembly (4) comprises a fixing ring (401), the interior of the fixing ring (401) is fixedly connected to the outer surface of the inner tube (202), a sliding groove (402) is provided at the top end of the fixing ring (401), and a wedge block (403) is slidably provided inside the sliding groove (402).

5. A high reliability axial surface seal rotary joint according to claim 4, characterized in that: The extrusion assembly (4) further comprises a mounting groove (404), the inner wall of the mounting groove (404) being provided with a connecting groove (405), a push rod (406) being slidably arranged inside the connecting groove (405), and one end of the push rod (406) being in contact with one side of the sealing ring (302); One end of the push rod (406) is fixedly connected to a wedge-shaped disk (407), and one side of the wedge-shaped disk (407) is in contact with one side of the wedge-shaped block (403).

6. The high reliability axial surface sealing rotary joint according to claim 1, characterized in that: An annular groove (5) is provided on the inner wall of the outer shell (1), and a mounting hole (6) is provided on the outer surface of the outer shell (1), wherein the interior of the mounting hole (6) is connected to the interior of the annular groove (5).

7. A high reliability axial surface seal rotary joint according to claim 2, characterized in that: A through groove (7) is provided inside the inner tube (202), and one side of the through groove (7) is connected to the inside of the annular groove (5).