阅读说明：本技术 旋转接头装置 (Rotary joint device ) 是由 王晓伟 庞朝兴 刘彦伟 贾立杰 郭俊波 曹一鸣 张宏志 于 2021-03-29 设计创作，主要内容包括：本发明涉及接头,特别是一种旋转接头装置。包括本体、中空的转轴,本体的外端封闭且设有径向的接口,本体为阶梯孔结构,本体的外轴孔内安装转轴,其特征在于：本体的外轴孔的外周面和转轴的内端分别设有凸缘结构,转轴的内端套装轴承座,转轴与轴承座之间安装陶瓷轴承,轴承座与本体的凸缘结构通过螺栓连接；本体的底部与转轴的内端面之间依次安装弹簧、密封圈和浮动环,密封圈的外圆周面设有环形的凹槽,该凹槽内安装O形圈,密封圈与浮动环之间、浮动环与转轴的内端面之间通过弹簧的压力紧贴密封。本发明使用寿命更长,结构原理简单,耐高温高腐蚀,降低维修成本。(The invention relates to a joint, in particular to a rotary joint device. Including body, hollow pivot, the outer end of body seals and is equipped with radial interface, and the body is the shoulder hole structure, the outer downthehole installation pivot of axle of body, its characterized in that: the outer peripheral surface of the outer shaft hole of the body and the inner end of the rotating shaft are respectively provided with a flange structure, the inner end of the rotating shaft is sleeved with a bearing seat, a ceramic bearing is arranged between the rotating shaft and the bearing seat, and the bearing seat is connected with the flange structure of the body through a bolt; a spring, a sealing ring and a floating ring are sequentially arranged between the bottom of the body and the inner end face of the rotating shaft, an annular groove is formed in the outer circumferential face of the sealing ring, an O-shaped ring is arranged in the groove, and the sealing ring and the floating ring and the inner end face of the rotating shaft are tightly attached and sealed through the pressure of the spring. The invention has longer service life, simple structure principle, high temperature and high corrosion resistance and reduced maintenance cost.)

1. The utility model provides a rotary joint device, includes body, hollow pivot, and the outer end of body is sealed and is equipped with radial interface, and the body is the shoulder hole structure, the outer downthehole installation pivot of axle of body, its characterized in that: the outer peripheral surface of the outer shaft hole of the body and the inner end of the rotating shaft are respectively provided with a flange structure, the inner end of the rotating shaft is sleeved with a bearing seat, a ceramic bearing is arranged between the rotating shaft and the bearing seat, and the bearing seat is connected with the flange structure of the body through a bolt; a spring, a sealing ring and a floating ring are sequentially arranged between the bottom of the body and the inner end face of the rotating shaft, an annular groove is formed in the outer circumferential face of the sealing ring, an O-shaped ring is arranged in the groove, and the sealing ring and the floating ring and the inner end face of the rotating shaft are tightly attached and sealed through the pressure of the spring.

2. The rotary joint assembly according to claim 1, wherein: the outer end of the sealing ring is provided with an inner conical surface structure, and the floating ring is provided with an outer conical surface structure matched with the inner conical surface structure.

3. The rotary joint assembly according to claim 1, wherein: the material of the sealing ring is corrosion-resistant high-nickel cast iron.

4. The rotary joint assembly according to claim 1, wherein: the body is provided with a sight hole, and the sight hole corresponds to the floating ring.

Technical Field

The invention relates to a joint, in particular to a rotary joint device.

Background

A large number of rotary joints are used in a ball mill in the cement industry, when the temperature of an outlet of the ball mill reaches a high limit, air supply is stopped and water supply is changed according to a program, and the conventional rotary joint is short in service life and frequent in replacement under the working condition of high temperature, high pressure and water-gas mixed use, normal production is influenced, and the production cost is increased.

Disclosure of Invention

The present invention is directed to solve the above-mentioned problems, and provides a rotary joint device having a longer service life.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a rotary joint device comprises a body and a hollow rotating shaft, wherein the outer end of the body is closed and is provided with a radial interface, the body is of a stepped hole structure, the rotating shaft is arranged in an outer shaft hole of the body, the outer peripheral surface of an outer shaft hole of the body and the inner end of the rotating shaft are respectively provided with a flange structure, a bearing seat is sleeved at the inner end of the rotating shaft, a ceramic bearing is arranged between the rotating shaft and the bearing seat, and the bearing seat is connected with the flange structure of the body through a bolt; a spring, a sealing ring and a floating ring are sequentially arranged between the bottom of the body and the inner end face of the rotating shaft, an annular groove is formed in the outer circumferential face of the sealing ring, an O-shaped ring is arranged in the groove, and the sealing ring and the floating ring and the inner end face of the rotating shaft are tightly attached and sealed through the pressure of the spring.

Compared with the prior art, the invention adopting the technical scheme has the beneficial effects that:

the service life is longer, and the structure principle is simple, high temperature and high corrosion resistance, reduction cost of maintenance.

Further, the optimization scheme of the invention is as follows:

the outer end of the sealing ring is provided with an inner conical surface structure, and the floating ring is provided with an outer conical surface structure matched with the inner conical surface structure.

The material of the sealing ring is corrosion-resistant high-nickel cast iron.

The body is provided with a sight hole, and the sight hole corresponds to the floating ring.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

in the figure: a body 1; a rotating shaft 2; a bearing seat 3; a ceramic bearing 4; a spring 5; an O-ring 6; a seal ring 7; a floating ring 8; a bolt 9; a sight hole 10.

Detailed Description

The invention is further described in detail below with reference to the figures and examples.

Referring to fig. 1, the present embodiment is a rotary joint device, which is composed of a body 1 and a rotating shaft 2, etc., wherein the body 1 has a stepped hole structure, the outer end of the body 1 is closed and is provided with a radial internal thread interface, and the outer circumferential surface of an outer shaft hole of the body 1 is provided with a flange structure. The outer downthehole installation pivot 2 of axle of body 1, pivot 2 is hollow structure, and its interior terminal surface is equipped with the flange structure, and the inner suit bearing frame 3 of pivot 2 installs ceramic bearing 4 between pivot 2 and the bearing frame 3, and ceramic bearing 4 is located the outside of the flange structure of pivot 2, and the flange structure of bearing frame 3 and body 1 passes through bolt 9 to be connected, and the material of body 1, pivot 2, bearing frame 3 and bolt 9 is the stainless steel.

A spring 5, a sealing ring 7 and a floating ring 8 are sequentially arranged between the bottom of the body 1 and the inner end face of the rotating shaft 2, the spring 5 and the sealing ring 7 are located in an inner shaft hole of the body 1, the sealing ring 7 is annular and made of corrosion-resistant high-nickel cast iron, an annular groove is formed in the outer circumferential face of the sealing ring 7, an O-shaped ring 6 is arranged in the groove, and the sealing ring 7 and the circumferential face of the inner shaft hole of the body 1 are sealed through the O-shaped ring 6. The outer end of the sealing ring 7 is provided with an inner conical surface structure, the floating ring 8 is provided with an outer conical surface structure matched with the inner conical surface, the floating ring 8 is made of graphite, the spring 5 is a pressure spring, and the sealing ring 7 and the floating ring 8 and the inner end surface of the rotating shaft 2 are tightly attached and sealed through the pressure of the spring 5. The body 1 is provided with a sight hole 10 corresponding to the floating ring.

This embodiment is overall structure single circulation formula, and inside sealed and radial seal through axial elasticity compensation, realize fixed with the transport effect of fluid in the rotary part, simple structure, it is convenient to maintain, synthesizes excellent in use effect. In the embodiment, the body 1, the rotating shaft 2, the bearing seat 3, the spring 5 and the bolt 9 are all made of stainless steel, the ceramic bearing 4 is installed in the bearing seat 3, the sealing ring 7 is made of corrosion-resistant high-nickel cast iron, and the floating ring 8 is made of graphite, so that the corrosion resistance under the condition of long-term water supply can be improved, and the service life is prolonged; the graphite floating ring 8 can realize self-lubrication, the matching surface of the floating ring 8 and the sealing ring 7 is of a conical surface structure, the sealing effect is enhanced along with pressure when fluid passes through, and the influence on the sealing effect is small during rotation, centering and vibration; the body 1 is provided with a sight hole 10 corresponding to the position of the floating ring 8, and when water leakage or air leakage occurs, the inner seal is worn, and parts need to be repaired or replaced in time; when the pressure of water or air exceeds the working pressure due to the blockage of the outlet pipeline of the connector, the fluid is discharged by jetting from the sight hole 10 through the seal. The adaptive media for conveying the fluid are water and air, and the working pressure is used as follows: 0.4-1.5MPa, the highest service temperature is less than or equal to 80 ℃, and the maximum rotation speed is allowed to be 50 R.P.M.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, which is defined in the appended claims.