阅读说明：本技术 一种用于旋转轴的多重密封装置 (Multiple sealing device for rotating shaft ) 是由 陶守宝 邵利 徐睿 于 2021-02-09 设计创作，主要内容包括：本发明涉及一种用于旋转轴的多重密封装置,包括：旋转轴；旋转轴外侧依次包覆第一套筒和第二套筒,第一套筒和第二套筒通过过盈配合方式安装于轴上；第二套筒外圈设置对向放置的两组V型组合密封圈,V型组合密封圈一端套置密封盖,V型组合密封圈外圈设置支撑座,支撑座通过连接螺栓组与密封盖固定；支撑座的另一侧通过连接螺栓组与壳体固定；设置一密封环套置于第一套筒外侧,同时设置一密封盘,套置于密封环外侧,并与支撑座通过螺栓固定连接。本发明能够保证旋转轴在运转过程中,壳体内部的水不会由此泄漏,从而保证轴端其他部件不被损坏,提高使用寿命,以及保持设备工作环境的安全与清洁。(The present invention relates to a multiple sealing device for a rotating shaft, comprising: a rotating shaft; the outer side of the rotating shaft is sequentially coated with a first sleeve and a second sleeve, and the first sleeve and the second sleeve are arranged on the shaft in an interference fit mode; the outer ring of the second sleeve is provided with two groups of V-shaped combined sealing rings which are oppositely arranged, one end of each V-shaped combined sealing ring is sleeved with a sealing cover, the outer ring of each V-shaped combined sealing ring is provided with a supporting seat, and the supporting seat is fixed with the sealing cover through a connecting bolt group; the other side of the supporting seat is fixed with the shell through a connecting bolt group; set up a sealing ring cover and arrange first sleeve outside in, set up a sealed dish simultaneously, the sealing ring outside is arranged in to the cover to pass through bolt fixed connection with the supporting seat. The invention can ensure that water in the shell can not leak from the rotating shaft in the running process, thereby ensuring that other parts at the shaft end are not damaged, prolonging the service life and keeping the safety and cleanness of the working environment of equipment.)

1. A multiple seal assembly for a rotating shaft, comprising:

a rotating shaft;

the outer side of the rotating shaft is sequentially coated with a first sleeve and a second sleeve, and the first sleeve and the second sleeve are connected in an interference fit mode;

the second sleeve outer ring is provided with two groups of V-shaped combined sealing rings which are oppositely arranged, the sealing cover is sleeved outside the V-shaped combined sealing rings, the sealing cover is provided with a supporting seat, and the supporting seat is fixed with the sealing cover through a connecting bolt group; a shell is arranged on one side of the supporting seat and is simultaneously fixed with the sealing cover and the supporting seat through a connecting bolt group; set up a sealing ring cover and arrange in the first sleeve outside sets up a sealed dish simultaneously, and the cover is arranged in the sealing ring outside to pass through bolt fixed connection with the supporting seat.

2. The multiple seal device for a rotating shaft according to claim 1, wherein the support base is fixed to the housing by a bolt group.

3. The multiple seal arrangement for a rotating shaft of claim 1 wherein two O-ring seals are disposed between said seal ring and said seal disk.

4. The multiple seal arrangement for a rotating shaft of claim 1, wherein two sets of V-shaped seal rings are placed back-to-back with a spacer ring disposed between the two sets.

5. The multiple seal arrangement for a rotating shaft of claim 1, wherein the second sleeve inside the corresponding support seat on the rotating shaft and the first sleeve inside the housing are in interference fit with the shaft.

Technical Field

The invention relates to the technical field of sealing, in particular to a multiple sealing structure suitable for a rotating shaft with a larger diameter.

Background

The common rotating shaft seal is mostly a pressure filling type seal or a local seal structure adopted by a shaft with a smaller diameter, and cannot realize combined multiple sealing, so that the existing methods cannot well realize the sealing of the rotating shaft with a larger diameter and the opening of the shell.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a multiple sealing structure, which ensures that water in the shell cannot leak from the rotating shaft in the operation process, thereby ensuring that other parts at the shaft end are not damaged, prolonging the service life and keeping the working environment of the equipment safe and clean.

The technical scheme adopted by the invention for solving the technical problems is as follows: constructing a multiple seal assembly for a rotating shaft comprising:

a rotating shaft;

the outer side of the rotating shaft is sequentially coated with a first sleeve and a second sleeve, and the first sleeve and the second sleeve are connected with the shaft in an interference fit mode;

the second sleeve outer ring is matched with the supporting seat to form a cavity structure, two groups of V-shaped combined sealing rings which are placed back to back are filled in the cavity structure, the two groups of V-shaped sealing rings are separated by a spacer ring, the end face of the outer side of each V-shaped combined sealing ring is pressed by a sealing cover, the outer ring of each V-shaped combined sealing ring is provided with a supporting seat, and the supporting seats are fixed with the shell through connecting bolt groups. The inside shaft part outer lane of casing sets up first sleeve, and first sleeve outside sets up the sealing ring, is provided with sealed dish simultaneously for guaranteeing the sealed effect of sealing ring, and sealed dish cover is arranged in the sealing ring outside to pass through the bolt fastening with the supporting seat.

In the above scheme, the supporting seat is fixed on the sealing cover through the bolt group.

In the above scheme, two O-shaped sealing rings are arranged between the sealing ring and the sealing disc.

In the above scheme, two groups of V-shaped sealing rings are placed back to back, and a spacing ring is arranged between the two groups of V-shaped sealing rings.

Wherein, correspond the inside first sleeve of casing, the ascending second sleeve of outside direction and the axle on the rotation axis and be interference fit.

Different from the prior art, the invention provides a multiple sealing device for a rotating shaft, which has the following structure: the outer side of the rotating shaft is sequentially coated with a first sleeve and a second sleeve, and the first sleeve and the second sleeve are connected with the rotating shaft in an interference fit mode; two groups of V-shaped combined sealing rings which are arranged back to back are arranged on the outer ring of the second sleeve, and the V-shaped combined sealing rings are tightly pressed by a sealing cover and a supporting seat; the supporting seat is fixed with the shell through a connecting bolt group, and an O-shaped ring seal is arranged between the supporting seat and the shell; a sealing ring and a sealing disc are arranged on the outer side of the first sleeve, and the sealing disc is sleeved on the outer side of the sealing ring and fixed with the supporting seat through bolts; and three O-shaped ring seals are arranged on the contact surface of the sealing disc and the sealing ring. The invention can ensure that water in the shell can not leak from the rotating shaft in the running process, thereby ensuring that other parts at the shaft end are not damaged, prolonging the service life and keeping the safety and cleanness of the working environment of equipment.

The implementation of the multiple sealing structure of the invention has the following beneficial effects:

1. convenient to use, production efficiency are high: the invention can be quickly positioned, aligned and adjusted in batch production, and can be used independently or in combination due to the modular structure, thereby effectively improving the production efficiency;

2. simple structure, good controllability and long service life, and is suitable for the process of pit batch production.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic structural view of a multiple sealing device for a rotating shaft according to the present invention.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in fig. 1, the present invention provides a multiple sealing apparatus for a rotating shaft, comprising:

a rotating shaft 1;

the outer side of the rotating shaft 1 is sequentially coated with a first sleeve 9 and a second sleeve 17, and the first sleeve 9 and the second sleeve 17 are connected with the rotating shaft 1 in an interference fit mode;

two groups of V-shaped combined sealing rings 3 which are placed back to back are arranged on the outer ring of the second sleeve 17, the two groups of sealing rings are separated by a spacer ring 4, a sealing cover 16 is sleeved on the outer side of each V-shaped combined sealing ring 3, and the sealing cover 16 is connected to the supporting seat 15 through a bolt group 2; the supporting seat 15 is fixed on the shell 13 through the connecting bolt group 5; a sealing ring 8 is arranged on the outer side of the first sleeve 9 in a sleeved mode, and a sealing disc 12 is arranged on the outer side of the sealing ring 8 in a sleeved mode and fixedly connected with the supporting seat 15 through bolts.

Wherein, the sealing cover 16 is fixed on the supporting seat 15 through a bolt group.

Wherein 2O-rings 6 and 7 are provided between the sealing ring 8 and the sealing disc 12.

Wherein, a space ring 4 is arranged between the two groups of V-shaped sealing rings 3.

The second sleeve 17 corresponding to the inside of the housing 13 on the rotating shaft 1 and the first sleeve 9 in the outside direction are in interference fit with the shaft.

The invention is mainly applied to the sealing structure at the opening position of the rotating shaft and the shell. The multiple sealing structures on the inner side and the outer side of the shell 13 can ensure the sealing effect of the rotating shaft in the operation process.

The invention is applied to a sealing structure at the opening of a rotating shaft and a shell, in particular to a sealing structure in which a mixture of materials and water is arranged in the shell, and the rotating shaft needs to extend out of the shell so as to be convenient for installing related parts such as a bearing seat and the like. Firstly, sleeves in interference fit are arranged on shaft sections of a rotating shaft and used for protecting the shaft sections in a normal production process and under special conditions such as jamming and the like, two groups of V-shaped combined sealing rings which are placed back to back are arranged on the outer ring of the sleeve on one side outside a shell, the two groups of sealing rings are separated by a spacer ring, and a sealing cover arranged on the end face is matched to enable the V-shaped combined sealing rings to be pressed tightly so as to obtain the optimal sealing effect; the middle part of the supporting seat is connected with a sealing disc through a bolt, an O-shaped ring is arranged on the outer side of the sealing disc fixing bolt to serve as a seal, a sealing ring is arranged inside the sealing disc, a sleeve is arranged inside the sealing ring, and the sleeve and the main shaft are in interference fit and used for protecting the main shaft; and two O-shaped ring sealing structures are arranged on the radial contact surface of one side of the sleeve and one side of the sealing disc. The sealing of a plurality of contact surfaces can be effectively guaranteed through the multi-sealing structure, the rotating shaft is effectively protected through the design of the sleeve, and all structures are convenient to detach and replace.

As shown in fig. 1, reference numerals 2, 5, and 14 are bolt groups, and reference numerals 6, 7, 10, and 11 are O-rings.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.