阅读说明：本技术 一种错位自适应机械密封结构 (Dislocation self-adaptation mechanical seal structure ) 是由 赵磊 花文达 陈忠良 蒋妮 雷鸣 凌文辉 于 2020-12-15 设计创作，主要内容包括：本发明公开了一种错位自适应机械密封结构,通过主动机构壳体与密封壳体互相接触的端面实现容错机壳的平行错位,密封壳体和被动机构壳体之间的球面密封可以容错轴线夹角错位,能够使传动轴壳体不再同一轴线或是传动轴有小偏角时,能够自适应的调节,对传动轴连接关节位置进行密封,并且具有一定的耐高温能力。(The invention discloses a dislocation self-adaptive mechanical sealing structure, which realizes parallel dislocation of a fault-tolerant casing through the mutually contacted end surfaces of a driving mechanism casing and a sealing casing, and the spherical sealing between the sealing casing and a driven mechanism casing can realize fault-tolerant axial line included angle dislocation, so that when a transmission shaft casing is not the same axial line any more or a transmission shaft has a small deflection angle, the dislocation self-adaptive mechanical sealing structure can be self-adaptively adjusted to seal the position of a transmission shaft connecting joint and has certain high temperature resistance.)

1. A sealing structure is characterized by comprising a driving shaft (1), a driving mechanism shell (2), a connecting pin (3), a spring (4), a sealing shell (5), a driven mechanism shell (6) and a bearing shaft (7);

the driving shaft (1) is connected with a bearing shaft (7) through a connecting pin (3); a spring (4) is arranged in the sealing shell (5), and a circle of circular arc-shaped groove is formed in the inner wall of one end of the sealing shell; a circle of circular arc-shaped bulge is processed on the outer wall of one end of the driven mechanism shell (6) and matched with a circular arc-shaped groove on the inner wall of the sealing shell (5); the driving shaft (1) penetrates through a sealing shell (5) and is internally provided with a spring (4), until the sealing shell (5) is sleeved on the outer side of a connecting pin (3) at the joint of the driving shaft (1) and a bearing shaft (7), the outer side of the driving shaft (1) is sleeved with an active mechanism shell (2), one end of an opening of the active mechanism shell (2) is connected with one end of the sealing shell (5), a passive mechanism shell (6) is sleeved on the outer side of the bearing shaft (7), a circular arc-shaped bulge enters the circular arc-shaped groove at the other end of the sealing shell (5), the spring (4) is compressed, the sealing shell (5) compresses the active mechanism shell (2), and the active mechanism shell (2), the sealing shell (5) and the passive mechanism shell (6) form a communicated.

2. A sealing structure according to claim 1, wherein said sealing structure is made of metal.

3. A sealing structure according to claim 1, wherein said sealing structure is used in a high temperature environment.

4. A sealing arrangement according to claim 1, characterised in that the sealing arrangement has an adaptive adjustment function.

5. A sealing structure according to claim 1, wherein said sealing structure is made of metal.

Technical Field

The invention belongs to the technical field of mechanical sealing, and particularly relates to a dislocation self-adaptive mechanical sealing structure.

Background

For the existing transmission mechanism, materials such as rubber are generally adopted for sealing, but the temperature is low, and the sealing design of the joint connection of the transmission structure in a high-temperature environment is difficult to meet. The installation matching degree of part of high-temperature sealing designs is higher, the position relation of two structures needs to be accurately designed, and the engineering application difficulty is high.

Disclosure of Invention

In view of this, the present invention provides a self-adaptive mechanical seal structure for two transmission joint housings of a transmission connecting mechanism, which is mainly characterized by simple structure, high temperature resistance and capability of allowing a certain position deviation.

A sealing structure comprises a driving shaft (1), a driving mechanism shell (2), a connecting pin (3), a spring (4), a sealing shell (5), a driven mechanism shell (6) and a bearing shaft (7);

the driving shaft (1) is connected with a bearing shaft (7) through a connecting pin (3); a spring (4) is arranged in the sealing shell (5), and a circle of circular arc-shaped groove is formed in the inner wall of one end of the sealing shell; a circle of circular arc-shaped bulge is processed on the outer wall of one end of the driven mechanism shell (6) and matched with a circular arc-shaped groove on the inner wall of the sealing shell (5); the driving shaft (1) penetrates through a sealing shell (5) and is internally provided with a spring (4), until the sealing shell (5) is sleeved on the outer side of a connecting pin (3) at the joint of the driving shaft (1) and a bearing shaft (7), the outer side of the driving shaft (1) is sleeved with an active mechanism shell (2), one end of an opening of the active mechanism shell (2) is connected with one end of the sealing shell (5), a passive mechanism shell (6) is sleeved on the outer side of the bearing shaft (7), a circular arc-shaped bulge enters the circular arc-shaped groove at the other end of the sealing shell (5), the spring (4) is compressed, the sealing shell (5) compresses the active mechanism shell (2), and the active mechanism shell (2), the sealing shell (5) and the passive mechanism shell (6) form a communicated.

The invention has the following beneficial effects:

according to the dislocation self-adaptive mechanical sealing structure, parallel dislocation of the fault-tolerant enclosure is realized through the mutually contacted end surfaces of the driving mechanism shell 2 and the sealing shell 5, the spherical sealing between the sealing shell and the driven mechanism shell can be subjected to fault-tolerant axial line included angle dislocation, so that when the transmission shaft shell is not the same axial line any more or a transmission shaft has a small deflection angle, self-adaptive adjustment can be realized, the position of a transmission shaft connecting joint is sealed, and the dislocation self-adaptive mechanical sealing structure has certain high temperature resistance.

Drawings

FIG. 1 is a schematic structural view of a self-adaptive mechanical seal structure according to the present invention;

fig. 2 is a schematic diagram of the offset adaptive mechanical sealing structure according to the present invention when the offset adaptive mechanical sealing structure is deflected at a small angle.

The device comprises a driving shaft 1, a driving mechanism 2, a connecting pin 3, a spring 4, a sealing shell 5, a driven mechanism shell 6 and a bearing shaft 7.

Detailed Description

The invention is described in detail below by way of example with reference to the accompanying drawings.

The invention provides a self-adaptive fault-tolerant sealing structure which is made of metal and has high temperature resistance, and the structure is specifically shown in figure 1 and comprises a driving shaft 1, a driving mechanism shell 2, a connecting pin 3, a spring 4, a sealing shell 5, a driven mechanism shell 6 and a bearing shaft 7.

The driving shaft 1 is connected with a bearing shaft 7 through a connecting pin 3; a spring 4 is arranged in the sealing shell 5, and a circle of circular arc-shaped groove is formed in the inner wall of one end of the sealing shell; a circle of circular arc-shaped bulge is processed on the outer wall of one end of the driven mechanism shell 6 and matched with the circular arc-shaped groove on the inner wall of the sealing shell 5 to form ball sealing; the driving shaft 1 penetrates through the sealing shell 5, a spring 4 is installed inside the sealing shell, until the sealing shell 5 is sleeved outside a connecting pin 3 at the joint of the driving shaft 1 and a bearing shaft 7, the driving mechanism shell 2 is sleeved outside the driving shaft 1, one end of an opening of the driving mechanism shell 2 is connected with one end of the sealing shell 5, the driven mechanism shell 6 is sleeved outside the bearing shaft 7, a circular arc-shaped bulge enters the inside of a circular arc-shaped groove at the other end of the sealing shell 5, the spring 4 is compressed, then the driving mechanism shell 2 is compressed by the sealing shell 5, and the driving mechanism shell 2, the sealing shell 5 and the driven mechanism shell 6 form a communicated.

As shown in figure 2, the sealing structure adopts two matching surfaces for sealing, the end surfaces of the driving mechanism shell 2 and the sealing shell 5 which are contacted with each other can tolerate the parallel dislocation of the shell, and the spherical sealing between the sealing shell 5 and the driven mechanism shell 6 can tolerate the dislocation of the included angle of the fault axis, so the structure can be self-adaptive to high-temperature environments with low installation precision and harsh pneumatic sealing, belongs to a self-adaptive fault-tolerant sealing structure, is simple and reliable to use, and can bear higher temperature environment conditions according to the difference of metal materials.

In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.