阅读说明：本技术 一种新型旋转接头 (Novel rotary joint ) 是由 林永财 朱佑益 苏志勇 林慕舟 朱韩珏 刘祥 陈鹏 于 2020-06-28 设计创作，主要内容包括：本发明公开了一种新型旋转接头,包括旋转轴,所述旋转轴一端套设与旋转设备相连的旋转接头本体,另一端与气管连接组件相连接,其中所述旋转轴中间设置用于输送气体的空腔；所述旋转轴的外侧同轴套设有轴承和将旋转轴与旋转接头本体之间密封的密封组件,所述密封组件包括密封圈套、星型密封圈、O形密封圈；所述星型密封圈的内环与旋转轴外侧边缘相贴合,其外环与密封圈套的内侧边缘相贴合；所述O形密封圈的内环与密封圈套的外侧边缘相贴合,其外环与旋转接头本体的内侧边缘相贴合；保证了密封组件与轴承的同轴度；减小O型密封圈与旋转接头本体的摩擦,使得旋转接头的密封性更好；提高使用寿命,性能更稳定；降低零部件加工难度、结构简单。(The invention discloses a novel rotary joint which comprises a rotary shaft, wherein one end of the rotary shaft is sleeved with a rotary joint body connected with rotary equipment, the other end of the rotary shaft is connected with a gas pipe connecting assembly, and a cavity for conveying gas is arranged in the middle of the rotary shaft; the outer side of the rotating shaft is coaxially sleeved with a bearing and a sealing assembly for sealing the rotating shaft and the rotating joint body, and the sealing assembly comprises a sealing ring sleeve, a star-shaped sealing ring and an O-shaped sealing ring; the inner ring of the star-shaped sealing ring is attached to the outer edge of the rotating shaft, and the outer ring of the star-shaped sealing ring is attached to the inner edge of the sealing ring sleeve; the inner ring of the O-shaped sealing ring is attached to the outer edge of the sealing ring sleeve, and the outer ring of the O-shaped sealing ring is attached to the inner edge of the rotary joint body; the coaxiality of the sealing assembly and the bearing is ensured; the friction between the O-shaped sealing ring and the rotary joint body is reduced, so that the sealing performance of the rotary joint is better; the service life is prolonged, and the performance is more stable; the processing difficulty of parts is reduced, and the structure is simple.)

1. A novel rotary joint comprises a rotary shaft, wherein one end of the rotary shaft is sleeved with a rotary joint body connected with rotary equipment, the other end of the rotary shaft is connected with a gas pipe connecting assembly, and a cavity for conveying gas is arranged in the middle of the rotary shaft; the method is characterized in that: the outer side of the rotating shaft is coaxially sleeved with a bearing and a sealing assembly for sealing the rotating shaft and the rotating joint body, and the sealing assembly comprises a sealing ring sleeve, a star-shaped sealing ring and an O-shaped sealing ring;

the inner ring of the star-shaped sealing ring is attached to the outer edge of the rotating shaft, and the outer ring of the star-shaped sealing ring is attached to the inner edge of the sealing ring sleeve;

the inner ring of the O-shaped sealing ring is attached to the outer edge of the sealing ring sleeve, and the outer ring of the O-shaped sealing ring is attached to the inner edge of the rotary joint body;

when the rotary joint body is driven by rotary equipment, the rotary joint body and the sealing assembly rotate together with the bearing outer ring on the outer side of the rotary shaft.

2. A novel swivel joint as claimed in claim 1, wherein: the number of the bearings on the outer side of the rotating shaft is two, the sealing assembly is arranged between the two bearings, and the two bearing outer rings respectively extrude the sealing ring sleeves from two sides of the sealing ring sleeves.

3. A novel swivel joint as claimed in claim 1 or 2, wherein: mounting grooves have all been seted up at the both ends of rotation axis, install the retaining ring that is used for restricting the bearing and removes in the mounting groove, and bearing cover is installed with trachea coupling assembling link to the rotation axis.

4. A novel swivel joint as claimed in claim 1, wherein: trachea coupling assembling includes trachea connecting seat and trachea connector, a trachea connecting seat tip is fixed in the tip of rotation axis through holding screw, and another tip is connected with the trachea connector.

5. A novel swivel joint as claimed in claim 3, wherein: the trachea connector is provided with a fixing piece for fixing a trachea, and the fixing piece comprises a snap ring arranged in a cavity of the trachea connector and a trachea sleeve matched with the snap ring;

when the air pipe is pushed towards the cavity of the air pipe connector, the spring pieces on the circumference of the snap ring clamp and fix the air pipe;

the air pipe sleeve is pushed inwards, the spring pieces on the circumference of the clamping ring are expanded outwards, and at the moment, the air pipe is separated from the clamping ring.

6. A novel swivel joint as claimed in claim 4 or 5, wherein: and a first sealing ring is arranged between the air pipe connecting seat and the rotating shaft, and a second sealing ring is arranged between the air pipe connecting seat and the air pipe connector.

Technical Field

The invention relates to the technical field of rotary joints, in particular to a novel rotary joint.

Background

The equipment which is usually used for production is always in a rotating state, and a certain medium is conveyed into the rotating equipment through a pipeline, particularly for conveying gas, a rotating joint is needed for connection; the rotary joint is a sealing device with one end connected with rotary equipment and the other end connected with a pipeline for conveying media; the medium is conveyed into the rotating equipment from the pipeline through the connecting structure, and the condition of no leakage needs to be ensured in the conveying process; therefore, the rotary joint is required to ensure the sealing performance under a certain pressure and a high rotating speed.

The existing rotary joint has the problems that a sealing element is easy to wear, the sealing performance of the rotary joint is poor, and the service life of the rotary joint is short.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a novel rotary joint.

In order to achieve the purpose, the invention provides the following technical scheme:

a novel rotary joint comprises a rotary shaft, wherein one end of the rotary shaft is sleeved with a rotary joint body connected with rotary equipment, the other end of the rotary shaft is connected with a gas pipe connecting assembly, and a cavity for conveying gas is arranged in the middle of the rotary shaft; the outer side of the rotating shaft is coaxially sleeved with a bearing and a sealing assembly for sealing the rotating shaft and the rotating joint body, and the sealing assembly comprises a sealing ring sleeve, a star-shaped sealing ring and an O-shaped sealing ring;

the inner ring of the star-shaped sealing ring is attached to the outer edge of the rotating shaft, and the outer ring of the star-shaped sealing ring is attached to the inner edge of the sealing ring sleeve;

the inner ring of the O-shaped sealing ring is attached to the outer edge of the sealing ring sleeve, and the outer ring of the O-shaped sealing ring is attached to the inner edge of the rotary joint body;

when the rotary joint body is driven by rotary equipment, the rotary joint body and the sealing assembly rotate together with the bearing outer ring on the outer side of the rotary shaft.

The invention further provides that: the number of the bearings on the outer side of the rotating shaft is two, the sealing assembly is arranged between the two bearings, and the two bearing outer rings respectively extrude the sealing ring sleeves from two sides of the sealing ring sleeves.

The invention further provides that: mounting grooves have all been seted up at the both ends of rotation axis, install the retaining ring that is used for restricting the bearing and removes in the mounting groove, and bearing cover is installed with trachea coupling assembling link to the rotation axis.

The invention further provides that: trachea coupling assembling includes trachea connecting seat and trachea connector, a trachea connecting seat tip is fixed in the tip of rotation axis through holding screw, and another tip is connected with the trachea connector.

The invention further provides that: the trachea connector is provided with a fixing piece for fixing a trachea, and the fixing piece comprises a snap ring arranged in a cavity of the trachea connector and a trachea sleeve matched with the snap ring;

when the air pipe is pushed towards the cavity of the air pipe connector, the spring pieces on the circumference of the snap ring clamp and fix the air pipe;

the air pipe sleeve is pushed inwards, the spring pieces on the circumference of the clamping ring are expanded outwards, and at the moment, the air pipe is separated from the clamping ring.

The invention further provides that: and a first sealing ring is arranged between the air pipe connecting seat and the rotating shaft, and a second sealing ring is arranged between the air pipe connecting seat and the air pipe connector.

The invention has the beneficial effects that: the bearing and the sealing component in the rotary joint are coaxially arranged on the rotary shaft and are arranged in the same inner cavity of the rotary joint body, so that the coaxiality of the sealing component and the bearing is ensured; the sealing assembly synchronously rotates on the outer ring of the bearing along with the rotary joint body, and the structure is more reasonable; the bearing and the sealing assembly are arranged in the same inner cavity of the rotary joint body, and the processing difficulty of the rotary joint body can be reduced; the structure enables the star-shaped sealing ring and the rotating shaft to be more uniformly attached together, so that the abrasion of the star-shaped sealing ring is reduced; the service life of the rotary joint is prolonged, and the performance is more stable; the processing difficulty of parts is reduced, and the structure is simpler.

Drawings

FIG. 1 is a schematic structural view of a novel rotary joint according to the present invention;

FIG. 2 is a cross-sectional view of a novel swivel joint of the present invention;

FIG. 3 is a schematic view of the internal structure of a novel rotary joint according to the present invention;

FIG. 4 is a schematic structural view of a seal assembly of a novel rotary joint of the present invention;

FIG. 5 is a schematic structural view of a fixing member of a novel rotary joint according to the present invention;

FIG. 6 is a schematic view of a rotary shaft of a novel rotary joint according to the present invention;

description of reference numerals: 1. a swivel joint body; 2. a rotating shaft; 21. a bearing; 22. a seal assembly; 221. sealing the snare; 222. a star-shaped sealing ring; 223. an O-shaped sealing ring; 24. a bearing retainer ring; 25. a bearing gland; 26. mounting grooves; 3. a trachea connection assembly; 31. a gas pipe connecting seat; 311. tightening the screw; 312. a first seal ring; 313. a second seal ring; 32. a gas pipe connector; 321. a fixing member; 3211. a snap ring; 32111. a spring plate; 3212. and a tracheal tube sleeve.

Detailed Description

An embodiment of a novel swivel joint according to the present invention is described in further detail with reference to fig. 1 to 6.

A novel rotary joint comprises a rotary shaft 2, wherein one end of the rotary shaft 2 is sleeved with a rotary joint body 1 connected with rotary equipment, the other end of the rotary shaft is connected with a gas pipe connecting assembly 3, a cavity used for conveying gas is formed in the middle of the rotary shaft 2, the gas pipe connecting assembly 3 is connected with a gas pipe for conveying gas, and the gas in the gas pipe flows into the cavity of the rotary shaft 2 after entering the gas pipe connecting assembly 3 and flows into the rotary equipment through the rotary joint body 1 to finish gas conveying; the bearing 21 and the sealing assembly 22 for sealing the space between the rotating shaft 2 and the rotating joint body 1 are coaxially sleeved on the outer side of the rotating shaft 2, and the sealing assembly 22 comprises a sealing ring sleeve 221, a star-shaped sealing ring 222 and an O-shaped sealing ring 223;

the inner ring of the star-shaped sealing ring 222 is attached to the outer edge of the rotating shaft 2, and the outer ring of the star-shaped sealing ring is attached to the inner edge of the sealing ring sleeve 221; sealing the sealing ring sleeve 221 and the rotating shaft 2;

the inner ring of the O-shaped sealing ring 223 is attached to the outer edge of the sealing ring sleeve 221, and the outer ring of the O-shaped sealing ring is attached to the inner edge of the rotary joint body 1; sealing the sealing ring sleeve 221 and the rotary joint body 1; the sealing performance between the rotating shaft 2 and the rotating joint body 1 is ensured, and gas leakage between the rotating shaft and the rotating joint body is avoided.

When the rotary joint body 1 is driven by a rotary device, the rotary joint body 1 and the sealing assembly 22 rotate together with the outer ring of the bearing 21 at the outer side of the rotary shaft 2, wherein the outer side wall of the rotary shaft 2 is processed into a polished rod with a smaller friction coefficient, so that friction is reduced; the bearing 21 and the sealing component 22 in the rotary joint are coaxially arranged on the rotating shaft 2 and are arranged in the same inner cavity of the rotary joint body 1, so that the coaxiality of the sealing component 22 and the bearing 21 is ensured; the sealing component 22 synchronously rotates on the outer ring of the bearing 21 along with the rotary joint body 1, and the structure is more reasonable; meanwhile, the processing difficulty of the rotary joint body 1 can be reduced; in addition, the star-shaped sealing ring 222 and the rotating shaft 2 can be more uniformly attached together by the structure, so that the abrasion of the star-shaped sealing ring 222 is reduced; the sealing performance of the rotary joint is better, the service life of the rotary joint is prolonged, and the performance is more stable; the processing difficulty of parts is reduced, and the structure is simpler.

The number of the bearings 21 on the outer side of the rotating shaft 2 is two, the sealing assembly 22 is arranged between the two bearings 21, and the outer rings of the two bearings 21 respectively press the sealing ring sleeves from two sides of the sealing ring sleeves, so that the sealing assembly 22 synchronously rotates on the rotating shaft 2 along with the rotating joint body 1.

Mounting grooves 26 are formed in two ends of the rotating shaft 2, a bearing retainer ring 24 used for limiting the movement of the bearing 21 is mounted in each mounting groove 26, and a bearing gland 25 is mounted at the connecting end of the rotating shaft 2 and the air pipe connecting assembly 3; the bearing 21 is prevented from moving in the rotating process, so that the stability of the rotary joint structure is ensured.

The air pipe connecting assembly 3 comprises an air pipe connecting seat 31 and an air pipe connecting head 32, wherein one end of the air pipe connecting seat 31 is fixed at the end of the rotating shaft 2 through a set screw 311, so that the air pipe connecting seat 31 is more firmly connected to the rotating shaft 2; the other end is connected with the air pipe connector 32, which is convenient for the connection between the air pipe connector 32 and the rotating shaft 2.

The trachea connector 32 is provided with a fixing piece 321 for fixing a trachea, and the fixing piece 321 comprises a snap ring 3211 arranged in the cavity of the trachea connector 32 and a trachea sleeve 3212 matched with the snap ring 3211;

when the air pipe is pushed towards the cavity of the air pipe connector 32, the spring pieces 32111 on the circumference of the snap ring 3211 clamp and fix the air pipe, so that the air pipe is conveniently connected and installed; meanwhile, a sealing ring is arranged in the cavity of the air pipe connector 32, so that air leakage at the joint of the air pipe and the air pipe connector 32 is avoided;

the tracheal tube is sleeved with a 3212 by pushing inwards, the spring pieces 32111 on the circumference of the snap ring 3211 are expanded outwards, and at the moment, the tracheal tube is separated from the snap ring 3211; the trachea is convenient to be dismantled from the trachea connector 32, and the efficiency is improved.

A first sealing ring 312 is arranged between the air pipe connecting seat 31 and the rotating shaft 2, so that the sealing property between the air pipe connecting seat 31 and the rotating shaft 2 is ensured; and a second sealing ring 313 is arranged between the air pipe connecting seat 31 and the air pipe connector 32, so that the sealing performance of the air pipe connector 32 connected to the air pipe connecting seat 31 is ensured.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.