阅读说明：本技术 一种新型轴封装置 (Novel shaft seal device ) 是由 高伦 于 2018-06-24 设计创作，主要内容包括：本发明涉及一种新型轴封装置。所述的轴封装置包括固定环安装座、固定环、转动环、伸缩环垫片、弹簧、伸缩环和轴封护套,所述的固定环安装座、固定环、转动环、伸缩环垫片、弹簧、伸缩环固定连接后设置在轴封护套内,所述的固定环固定安装在固定环安装座内,所述的固定环内设有空腔,所述的转动环设置在固定环的空腔内,所述的转动环内设有空腔,所述的伸缩环垫片设置在转动环的空腔内,所述的转动环内设有台阶圆,所述的弹簧一端卡在转动环的台阶圆上,另一端设置在伸缩环内,所述的伸缩环外壁上设有螺纹。本发明结构简单、安装方便、工作稳定、使用寿命长、密封效果好、散热快、冷却快。(The invention relates to a novel shaft seal device. The shaft seal device comprises a fixing ring mounting seat, a fixing ring, a rotating ring, a telescopic ring gasket, a spring, a telescopic ring and a shaft seal jacket, wherein the fixing ring mounting seat, the fixing ring, the rotating ring, the telescopic ring gasket, the spring and the telescopic ring are fixedly connected and then arranged in the shaft seal jacket, the fixing ring is fixedly arranged in the fixing ring mounting seat, a cavity is formed in the fixing ring, the rotating ring is arranged in the cavity of the fixing ring, a cavity is formed in the rotating ring, the telescopic ring gasket is arranged in the cavity of the rotating ring, a step circle is arranged in the rotating ring, one end of the spring is clamped on the step circle of the rotating ring, the other end of the spring is arranged in the telescopic ring, and a thread circle is arranged on the outer wall of the telescopic ring. The invention has the advantages of simple structure, convenient installation, stable work, long service life, good sealing effect, quick heat dissipation and quick cooling.)

1. A novel shaft seal device is characterized in that: the shaft seal device comprises a fixing ring mounting seat, a fixing ring, a rotating ring, a telescopic ring gasket, a spring, a telescopic ring and a shaft seal jacket, wherein the fixing ring mounting seat, the fixing ring, the rotating ring, the telescopic ring gasket, the spring and the telescopic ring are fixedly connected and then arranged in the shaft seal jacket, the fixing ring is fixedly arranged in the fixing ring mounting seat, a cavity is formed in the fixing ring, the rotating ring is arranged in the cavity of the fixing ring, a cavity is formed in the rotating ring, the telescopic ring gasket is arranged in the cavity of the rotating ring, a step circle is arranged in the rotating ring, one end of the spring is clamped on the step circle of the rotating ring, the other end of the spring is arranged in the telescopic ring, and a thread circle is arranged on the outer wall of the telescopic ring.

Technical Field

The invention relates to a shaft seal structure used on a pump body, in particular to a novel shaft seal device.

Background

The main structure of the horizontal centrifugal pump is that the pump and the motor are coaxially linked, a shaft seal is arranged between the pump and the motor, different industries have different requirements on a matched shaft seal structure due to different working conditions, and the shaft seal sealing performance difference of different structures is large. The marine horizontal centrifugal pump drifts along with a ship, and the installation position is located in a cabin with a relatively narrow space, so that the pump shaft seal is very inconvenient to adjust and maintain daily, the shaft seal of the marine centrifugal pump has higher quality requirements, and the shaft seal matched with the commercially available marine centrifugal pump is preferably mechanically sealed. When the marine horizontal centrifugal pump operates, the rotating speed of a dynamic ring of the mechanical seal is between 9ms and 16ms, and under such high linear speed, if a dynamic ring friction pair and a static ring friction pair are not cooled necessarily, the temperature can be increased rapidly, and the excessive temperature leads to burning loss of the dynamic ring seal pair and the static ring seal pair. Even if the friction pair is not burnt by high temperature, once the friction pair is contacted with cooling water at normal temperature, the friction pair is easy to crack due to large temperature difference between the friction pair and the cooling water, so that the mechanical sealing element fails, and leaked media enter along the pump shaft to easily cause motor burning accidents. The shaft seal water cooling system matched with the existing commercial marine horizontal centrifugal pump mainly comprises two main types of positive displacement or external special cooling water channels, and the existing water cooling structure is reliable in cooling, but relatively complex in structure, large in size and difficult to maintain, and is not the optimal shaft seal water cooling structure of the marine horizontal centrifugal pump.

Disclosure of Invention

The invention provides a novel shaft seal device which is simple in structure, convenient to install, stable in work, long in service life, good in sealing effect, fast in heat dissipation and fast in cooling.

The technical scheme of the invention is as follows: the shaft seal device comprises a fixing ring mounting seat, a fixing ring, a rotating ring, a telescopic ring gasket, a spring, a telescopic ring and a shaft seal jacket, wherein the fixing ring mounting seat, the fixing ring, the rotating ring, the telescopic ring gasket, the spring and the telescopic ring are fixedly connected and then arranged in the shaft seal jacket, the fixing ring is fixedly arranged in the fixing ring mounting seat, a cavity is formed in the fixing ring, the rotating ring is arranged in the cavity of the fixing ring, a cavity is formed in the rotating ring, the telescopic ring gasket is arranged in the cavity of the rotating ring, a step circle is arranged in the rotating ring, one end of the spring is clamped on the step circle of the rotating ring, the other end of the spring is arranged in the telescopic ring, and a thread circle is arranged on the outer wall of the telescopic ring.

The invention has the advantages of simple structure, convenient installation, stable work, long service life, good sealing effect, quick heat dissipation and quick cooling.

Drawings

Fig. 1 is a schematic structural view of the present invention.

In the figure, 1 is a fixed ring mounting seat, 2 is a fixed ring, 3 is a rotating ring, 4 is an expansion ring gasket, 5 is a spring, 6 is an expansion ring, and 7 is a shaft seal sheath.

Detailed Description

A novel shaft seal device comprises a fixed ring mounting seat 1, a fixed ring 2, a rotating ring 3, a telescopic ring gasket 4, a spring 5, a telescopic ring 6 and a shaft seal sheath 7, the fixed ring mounting seat 1, the fixed ring 2, the rotating ring 3, the telescopic ring gasket 4, the spring 5 and the telescopic ring 6 are fixedly connected and then arranged in the shaft seal sheath 7, the fixing ring 2 is fixedly arranged in the fixing ring mounting seat 1, a cavity is arranged in the fixing ring 2, the rotating ring 3 is arranged in the cavity of the fixed ring 2, a cavity is arranged in the rotating ring 3, the telescopic ring gasket 4 is arranged in the cavity of the rotating ring 3, a step circle is arranged in the rotating ring 3, one end of the spring 5 is clamped on the step circle of the rotating ring 3, the other end of the spring is arranged in the telescopic ring 6, and threads are arranged on the outer wall of the telescopic ring 6.

The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention; therefore, although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that the present invention may be modified and equivalents may be substituted; all technical solutions and modifications thereof that do not depart from the spirit and scope of the present invention should be construed to cover the scope of the claims that are appended hereto.