CN210661809U

CN210661809U - High-stability rotary joint

Info

Publication number: CN210661809U
Application number: CN201920664995.XU
Authority: CN
Inventors: 杨勇; 李继锁
Original assignee: Tengxuan Technology Co ltd
Current assignee: Tengxuan Technology Co ltd
Priority date: 2019-05-09
Filing date: 2019-05-09
Publication date: 2020-06-02
Anticipated expiration: 2029-05-09

Abstract

The utility model provides a high-stability rotary joint, which comprises an outer pipe, a shell, a static ring and a movable ring, wherein the shell is provided with a mounting hole with an opening at the right end, the outer pipe is inserted into the mounting hole, the static ring is arranged in the mounting hole, and the left end surface of the movable ring is provided with a rotation stopping hole and a positioning hole from left to right in sequence; the outer wall of the rotating ring is provided with a shaft shoulder which protrudes outwards along the radial direction, and the right side surface of the shaft shoulder is contacted with the bottom wall of the rotation stopping hole; the hole wall of the rotation stopping hole is provided with a clamping block which is protruded inwards along the radial direction; and a clamping groove is arranged on the shaft shoulder at the position corresponding to the clamping block, and the clamping block is clamped in the clamping groove. The clamping block fixed on the outer pipe is arranged, the clamping groove matched with the clamping block is formed in the movable ring, the positioning precision of the rotation stopping component is improved, the rotation stopping gap is reduced, the action position of the rotation stopping action force is optimized, the stability of a sealing surface is greatly improved in the rotation process of the outer pipe, the following performance of the movable ring and the static ring is improved, and the sealing performance of a dynamic sealing contact surface is improved.

Description

High-stability rotary joint

Technical Field

The utility model relates to a rotary joint especially relates to a rotary joint of high stability.

Background

The rotary joint is a connecting sealing part for inputting fluid media (liquid, gas and the like) into rotary equipment from a static pipeline, and the longitudinal inner pipe is positioned in the rotary joint, is different from a conveying medium channel of the rotary joint, but also plays a role in conveying the medium.

The movable seal is realized by mutually laminating a movable ring and a static ring part which rotate relatively in a rotary joint, the conventional movable ring performs rotation stopping in a mode of a rotation stopping hole and a rotation stopping pin in the installation process of an outer pipe, the rotation stopping mode easily causes relative movement of the movable ring and the outer pipe in the rotation process due to the manufacturing and installation errors, the phenomena of movable ring deflection and the like are caused, the sealing stability is influenced, the following performance of the movable ring and the static ring is reduced, the shaking and even poor lamination of a sealing surface is caused, and further the leakage is caused, so that the sealing fault is caused.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the spline mode of rotating ring causes sealed face stability easily among the prior art low, has reduced the followability of rotating ring and quiet ring, causes sealed face shake or even the bad problem of sealed face laminating, the utility model provides a high stability's rotary joint solves above-mentioned problem.

The utility model provides a technical scheme that its technical problem adopted is: a high-stability rotary joint comprises an outer pipe, a shell, a stationary ring and a movable ring, wherein the shell is provided with a mounting hole with an opening at the right end, the outer pipe is inserted into the mounting hole, the stationary ring is arranged in the mounting hole, the left end surface of the movable ring is in sealing fit with the right end surface of the stationary ring, a rotation stopping hole and a positioning hole are sequentially arranged on the left end surface of the movable ring from left to right, and the diameter of the rotation stopping hole is larger than that of the positioning hole; the outer wall of the movable ring is provided with a shaft shoulder which protrudes outwards along the radial direction, the movable ring is inserted into the positioning hole from left to right, and the right side surface of the shaft shoulder is contacted with the bottom wall of the rotation stopping hole; the hole wall of the rotation stopping hole is provided with a clamping block which is protruded inwards along the radial direction; and a clamping groove is formed in the position, corresponding to the clamping block, of the shaft shoulder, and the clamping block is clamped in the clamping groove.

Further: the hole wall of the mounting hole is provided with a sealing sleeve, the static ring is inserted into the sealing sleeve, and the outer wall of the static ring is in sealing connection with the inner wall of the sealing sleeve.

Further: the number of the clamping blocks and the number of the clamping grooves are two, and the two clamping blocks and the two clamping grooves are uniformly distributed along the circumferential direction.

Further: the static ring is provided with a rotation stopping groove, a rotation stopping pin is inserted into the rotation stopping groove, and the rotation stopping pin is fixedly connected with the shell.

Further: the hole wall of the positioning hole is provided with a first sealing groove, a first sealing ring is installed in the first sealing groove, and the first sealing ring is in sealing contact with the outer wall of the movable ring.

Further: the outer wall of the static ring is provided with a second sealing groove, a second sealing ring is installed in the second sealing groove, and the second sealing ring is in sealing contact with the inner hole wall of the sealing sleeve.

The beneficial effects of the utility model are that, the utility model relates to a high stability's rotary joint fixes the fixture block on the outer tube and sets up on the rotating ring with fixture block complex draw-in groove through setting up, has improved the positioning accuracy of the part that splines, has reduced the clearance of splines, has optimized the effect position of the effect of splines simultaneously, has improved the stability of sealed face greatly at the outer tube rotation in-process, has improved the followability of rotating ring and quiet ring for the end face contact of quiet ring and rotating ring keeps closely laminating all the time, has improved the sealing performance of dynamic seal contact surface.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural view of a high-stability rotary joint of the present invention;

FIG. 2 is an enlarged view of a portion of the high stability swivel of FIG. 1 at A;

FIGS. 3 and 4 are schematic structural views of the rotating ring;

fig. 5 is a schematic view of a latch in the outer tube.

In the figure, the sealing device comprises an outer pipe 1, an outer pipe 2, a shell 3, a static ring 4, a movable ring 5, a mounting hole 6, a rotation stopping hole 7, a positioning hole 8, a shaft shoulder 9, a clamping block 10, a clamping groove 11, a sealing sleeve 12, a rotation stopping pin 13, a first sealing ring 14 and a second sealing ring.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used only for convenience in describing and simplifying the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present invention includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.

As shown in fig. 1 and 2, the utility model provides a high-stability rotary joint, including outer tube 1, casing 2, stationary ring 3 and rotating ring 4, casing 2 is provided with right-hand member open-ended mounting hole 5, outer tube 1 is inserted in mounting hole 5, stationary ring 3 is arranged in mounting hole 5, the left end face of rotating ring 4 is in sealing fit with the right end face of stationary ring 3, rotating stop hole 6 and locating hole 7 are arranged on the left end face of rotating ring 4 from left to right in proper order, the diameter of rotating stop hole 6 is greater than the diameter of locating hole 7; as shown in fig. 4 and 5, a shaft shoulder 8 protruding outward in the radial direction is provided on the outer wall of the rotating ring 4, the rotating ring 4 is inserted into the positioning hole 7 from left to right, and the right side surface of the shaft shoulder 8 contacts with the bottom wall of the rotation stop hole 6; referring to fig. 5, the hole wall of the rotation stopping hole 6 is provided with a clamping block 9 protruding inwards in the radial direction; a clamping groove 10 is formed in the position, corresponding to the clamping block 9, of the shaft shoulder 8, and the clamping block 9 is clamped in the clamping groove 10.

The outer tube 1 rotates in casing 2 when rotary joint uses, and then drives the quiet ring 3 of rotating ring 4 laminating and rotate, and the medium transmits through outer tube 1 and casing 2, and rotating ring 4 and quiet ring 3 keep laminating sealed state when relative rotation to this realizes the movive seal between rotating part and the non-rotating part. The fixture block 9 and the fixture block 9 are fixedly arranged on the hole wall of the rotation stopping hole 6, the fixture block 9 can be directly machined on the hole wall of the rotation stopping hole 6 through machining methods such as milling, or the fixture block 9 is fixedly arranged in the rotation stopping hole 6 in a welding mode, the fixture block 9 is clamped and arranged in the clamping groove 10 in the installation process of the movable ring 4 and the outer pipe 1, and the movable ring 4 and the outer pipe can be prevented from rotating relatively in the mode that the fixture block 9 is arranged in the clamping groove 10.

The mode that the fixture block 9 was installed in draw-in groove 10 has abandoned among the prior art to carry on spacingly through the mode that the hole 6 is only changeed to the only commentaries on classics round pin 12, can improve both sides 'size precision and form and position tolerance precision between fixture block 9 and draw-in groove 10 and then reduce the clearance of only changeing, make outer tube 1 can keep the steady rotation by rotating movable ring 4 when driving movable ring 4 to rotate, the stability of having improved movable ring 4 and static ring 3 laminating each other and the followability between them have avoided outer tube 1 to have improved rotary joint's sealing reliability at the face shake of rotating in-process movable ring 4 and static ring 3 laminating.

The hole wall of the mounting hole 5 is provided with a sealing sleeve 11, the static ring 3 is inserted into the sealing sleeve 11, and the outer wall of the static ring 3 is in sealing connection with the inner wall of the sealing sleeve 11. The sealing sleeve 11 is embedded in the mounting hole 5, the surface quality and the processing precision of the mounting hole 5 are not high due to the material of the mounting hole 5 on the shell 2 and the processing mode, the sealing sleeve 11 can improve the size precision and optimize the surface quality such as surface roughness and hardness, the fixed ring is installed in the sealing sleeve 11 embedded in the mounting hole 5, the sealing property between the inner wall of the sealing sleeve 11 and the outer wall of the static ring 3 can be improved, and the sealing life is prolonged.

The number of the clamping blocks 9 and the clamping grooves 10 is two, and the two clamping blocks 9 and the two clamping grooves 10 are uniformly distributed along the circumferential direction. The symmetrically distributed clamping grooves 10 and the clamping blocks 9 can stop the rotation of the rotating ring 4 at the circumferential symmetric positions, the rotation stopping limiting stress positions are balanced, the stability of the rotating ring 4 in the outer tube 1 is improved, and the rotation stopping effect is improved.

The stationary ring 3 is provided with a rotation stopping groove, a rotation stopping pin 12 is inserted into the rotation stopping groove, and the rotation stopping pin 12 is fixedly connected with the shell 2. The rotation stopping requirement of the static ring 3 in the mounting hole 5 of the shell 2 can be met by inserting the rotation stopping pin 12 into the rotation stopping groove, so that the static ring 3 only has the freedom degree of axial movement, and the stability of a dynamic sealing surface is guaranteed.

The hole wall of the positioning hole 7 is provided with a first sealing groove, a first sealing ring 13 is installed in the first sealing groove, and the first sealing ring 13 is in sealing contact with the outer wall of the movable ring 4. Be provided with the second seal groove on the outer wall of quiet ring 3, install second sealing washer 14 in the second seal groove, second sealing washer 14 with the inner hole wall sealing contact of seal cover 11.

The first sealing ring 13 can provide reliable sealing between the positioning hole 7 and the movable ring 4, the second sealing ring 14 can provide reliable sealing between the static ring 3 and the sealing sleeve 11, and the static sealing contact part is sealed in a sealing ring mode, so that the effect is reliable, and the sealing life is long.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of the term does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a high stability's rotary joint, includes outer tube (1), casing (2), quiet ring (3) and rotating ring (4), set up right-hand member open-ended mounting hole (5) on casing (2), outer tube (1) insert in mounting hole (5), quiet ring (3) set up in mounting hole (5), the left end face of rotating ring (4) with the right-hand member face of quiet ring (3) seals the laminating, its characterized in that: a rotation stopping hole (6) and a positioning hole (7) are sequentially arranged on the left end face of the movable ring (4) from left to right, and the diameter of the rotation stopping hole (6) is larger than that of the positioning hole (7); a shaft shoulder (8) protruding outwards in the radial direction is arranged on the outer wall of the movable ring (4), the movable ring (4) is inserted into the positioning hole (7) from left to right, and the right side surface of the shaft shoulder (8) is in contact with the bottom wall of the rotation stopping hole (6); the wall of the rotation stopping hole (6) is provided with a clamping block (9) which protrudes inwards along the radial direction; a clamping groove (10) is formed in the position, corresponding to the clamping block (9), of the shaft shoulder (8), and the clamping block (9) is clamped in the clamping groove (10).

2. A high stability swivel joint as claimed in claim 1, wherein: the hole wall of the mounting hole (5) is provided with a sealing sleeve (11), the static ring (3) is inserted into the sealing sleeve (11), and the outer wall of the static ring (3) is in sealing connection with the inner wall of the sealing sleeve (11).

3. A high stability swivel joint as claimed in claim 2, wherein: the number of the clamping blocks (9) and the clamping grooves (10) is two, and the two clamping blocks (9) and the two clamping grooves (10) are uniformly distributed along the circumferential direction.

4. A high stability swivel joint as claimed in claim 3, wherein: the static ring (3) is provided with a rotation stopping groove, a rotation stopping pin (12) is inserted into the rotation stopping groove, and the rotation stopping pin (12) is fixedly connected with the shell (2).

5. A high stability swivel joint as claimed in claim 4, wherein: the hole wall of the positioning hole (7) is provided with a first sealing groove, a first sealing ring (13) is installed in the first sealing groove, and the first sealing ring (13) is in sealing contact with the outer wall of the movable ring (4).

6. A high stability swivel joint as claimed in claim 2, wherein: the outer wall of the static ring (3) is provided with a second sealing groove, a second sealing ring (14) is installed in the second sealing groove, and the second sealing ring (14) is in sealing contact with the inner hole wall of the sealing sleeve (11).