CN213685282U

CN213685282U - High-speed double-mechanical seal structure for ventilation

Info

Publication number: CN213685282U
Application number: CN202022471185.8U
Authority: CN
Inventors: 狄肖含
Original assignee: Yuhang Aerospace Equipment Co ltd
Current assignee: Yuhang Aerospace Equipment Co ltd
Priority date: 2020-10-31
Filing date: 2020-10-31
Publication date: 2021-07-13
Anticipated expiration: 2030-10-31

Abstract

The utility model discloses a ventilate with high-speed duplex mechanical seal structure, which comprises a rotating shaft, the surface of pivot is provided with the casing, be provided with sealed chamber between pivot and the casing. The utility model discloses in, cut off and seal and to make and connect between two casings, thereby make the connection have better leakproofness, supplementary sealed can improve the leakproofness between rotating ring and the pivot, thereby improve device's leakproofness, the rotating ring is made through graphite, can make it have stronger wear resistance and thermal deformation resistance, quiet ring is made through the high hardness alloy, can make it have better compressive resistance, thereby can improve device's life, moreover, the steam generator is simple in structure, thereby make the device have more effective sealing.

Description

High-speed double-mechanical seal structure for ventilation

Technical Field

The utility model relates to a seal structure technical field that ventilates especially relates to a ventilate and use high-speed duplex structure of sealing.

Background

For multi-channel rotary joints, most of the multi-channel rotary joints are sealed by elastic bodies, wear-resistant materials are used as main materials, and a certain amount of compensation force is added to realize the partition and sealing of a plurality of channels. The structure is simple, low in cost and stable in performance, and is widely applied. However, this construction does not satisfy the conditions of high speed and dry friction. The elastomer seal is mainly made of high polymer materials, and the materials have extremely high abrasion speed in a dry friction state, so that the high-speed operation condition of ventilation cannot be met, the sealing performance of the device is affected, and certain inconvenience is caused.

Disclosure of Invention

The utility model aims at solving the defects existing in the prior art and providing a high-speed double mechanical seal structure for ventilation.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a high-speed double mechanical seal structure for ventilation comprises a rotating shaft, wherein a shell is arranged on the outer surface of the rotating shaft, and a seal cavity is arranged between the rotating shaft and the shell;

a limiting stop ring is arranged between the rotating shaft and the shell and is in penetrating connection with the rotating shaft, and a bearing is arranged at the top of the limiting stop ring;

a movable ring and a static ring are arranged in the sealing cavity, the movable ring and the static ring are both connected with the rotating shaft in a penetrating way, and the static ring is positioned right above the movable ring;

the top of the movable ring is provided with a spring pad which is in through connection with the rotating shaft;

and a movable ring towing bracket is arranged in the sealing cavity.

As a further description of the above technical solution:

and a wave-shaped spring is arranged between the movable ring bracket and the spring pad, and the movable ring bracket is fixedly connected with the spring pad through the wave-shaped spring.

As a further description of the above technical solution:

the two shells are symmetrical to each other, a fastening nut is arranged between the two shells, and the two shells are fixedly connected through the fastening nut.

As a further description of the above technical solution:

and a partition seal is arranged between the two movable ring brackets.

As a further description of the above technical solution:

and an auxiliary seal is arranged between the movable ring and the rotating shaft.

As a further description of the above technical solution:

the movable ring is made of graphite, and the static ring is made of alloy.

The utility model discloses following beneficial effect has:

1. when the high-speed double mechanical seal structure for ventilation is used, the wave-shaped spring, the movable ring bracket, the movable ring, the partition seal, the auxiliary seal, the static ring and the fastening nut are arranged, the wave-shaped spring can enable the movable ring bracket and the movable ring to have better buffer performance, the fastening nut can facilitate the connection of two shells, thereby being convenient for assembly and disassembly, the partition seal can connect the two shells, thereby leading the connection to have better sealing performance, the auxiliary seal can improve the sealing performance between the movable ring and the rotating shaft, thereby improving the sealing performance of the device, the movable ring is made of graphite and has stronger wear resistance and thermal deformation resistance, the static ring is made of high-hardness alloy and has better pressure resistance, thereby can improve the life of device, simple structure to make the device have more effective sealed.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Illustration of the drawings:

1. a rotating shaft; 2. a housing; 3. a moving ring; 4. a stationary ring; 5. a movable ring bracket; 6. isolating and sealing; 7. a spring pad; 8. a wave-shaped spring; 9. auxiliary sealing; 10. a bearing; 11. a limit stop ring; 12. sealing the cavity; 13. and (5) tightening the nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the present invention provides an embodiment: a high-speed double mechanical seal structure for ventilation comprises a rotating shaft 1, wherein a shell 2 is arranged on the outer surface of the rotating shaft 1, and a seal cavity 12 is arranged between the rotating shaft 1 and the shell 2; a limit stop ring 11 is arranged between the rotating shaft 1 and the shell 2, the limit stop ring 11 is connected with the rotating shaft 1 in a penetrating way, and a bearing 10 is arranged at the top of the limit stop ring 11; a moving ring 3 and a static ring 4 are arranged in the sealing cavity 12, the moving ring 3 and the static ring 4 are both connected with the rotating shaft 1 in a penetrating way, and the static ring 4 is positioned right above the moving ring 3; the top of the movable ring 3 is provided with a spring pad 7, and the spring pad 7 is connected with the rotating shaft 1 in a penetrating way; the inner part of the sealing cavity 12 is provided with a movable ring bracket 5.

A wave-shaped spring 8 is arranged between the movable ring bracket 5 and the spring pad 7, the movable ring bracket 5 is fixedly connected with the spring pad 7 through the wave-shaped spring 8, and the wave-shaped spring 8 can enable the movable ring bracket 5 and the movable ring 3 to have better buffering performance; the two shells 2 are symmetrical to each other, the fastening nut 13 is arranged between the two shells 2, the two shells 2 are fixedly connected through the fastening nut 13, and the fastening nut 13 can facilitate the connection of the two shells 2, so that the installation and the disassembly are convenient; a partition seal 6 is arranged between the two movable ring brackets 5, so that the two shells 2 can be connected, and the connection has better sealing property; an auxiliary seal 9 is arranged between the moving ring 3 and the rotating shaft 1, and the auxiliary seal 9 can improve the sealing property between the moving ring 3 and the rotating shaft 1, so that the sealing property of the device is improved; the movable ring 3 is made of graphite, the static ring 4 is made of high-hardness alloy, the movable ring 3 is made of graphite, so that the movable ring has high wear resistance and high heat deformation resistance, and the static ring 4 is made of alloy, so that the static ring has high pressure resistance, and the service life of the device can be prolonged.

The working principle is as follows: when using to ventilate with high-speed duplex sealed structure, wave type spring 8 can make and have better resiliency between rotating ring bracket 5 and the rotating ring 3, fastening nut 13 can be convenient for make two casings 2 connect, thereby be convenient for install and dismantle, it can make and connect between two casings 2 to cut off sealed 6, thereby make and connect and have better leakproofness, supplementary sealed 9 can improve the leakproofness between rotating ring 3 and the pivot 1, thereby improve the leakproofness of device, rotating ring 3 is made through graphite, can make it have stronger wear resistance and thermal deformation resistance, quiet ring 4 is made through high rigidity alloy, can make it have better compressive resistance, thereby can improve the life of device, moreover, the steam generator is simple in structure, thereby make the device have more effective sealing, and has certain practicality.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a ventilate and use high-speed duplex sealed structure, includes pivot (1), its characterized in that: a shell (2) is arranged on the outer surface of the rotating shaft (1), and a sealing cavity (12) is arranged between the rotating shaft (1) and the shell (2);

a limiting stop ring (11) is arranged between the rotating shaft (1) and the shell (2), the limiting stop ring (11) is connected with the rotating shaft (1) in a penetrating manner, and a bearing (10) is arranged at the top of the limiting stop ring (11);

a moving ring (3) and a static ring (4) are arranged in the sealing cavity (12), the moving ring (3) and the static ring (4) are both in penetrating connection with the rotating shaft (1), and the static ring (4) is positioned right above the moving ring (3);

the top of the movable ring (3) is provided with a spring pad (7), and the spring pad (7) is in through connection with the rotating shaft (1);

and a movable ring towing bracket (5) is arranged in the sealing cavity (12).

2. The high-speed double mechanical seal structure for ventilation according to claim 1, wherein: a wave-shaped spring (8) is arranged between the movable ring bracket (5) and the spring pad (7), and the movable ring bracket (5) is fixedly connected with the spring pad (7) through the wave-shaped spring (8).

3. The high-speed double mechanical seal structure for ventilation according to claim 1, wherein: the two shells (2) are symmetrical to each other, a fastening nut (13) is arranged between the two shells (2), and the two shells (2) are fixedly connected through the fastening nut (13).

4. The high-speed double mechanical seal structure for ventilation according to claim 1, wherein: and a partition seal (6) is arranged between the two movable ring brackets (5).

5. The high-speed double mechanical seal structure for ventilation according to claim 1, wherein: an auxiliary seal (9) is arranged between the movable ring (3) and the rotating shaft (1).

6. The high-speed double mechanical seal structure for ventilation according to claim 1, wherein: the moving ring (3) is made of graphite, and the static ring (4) is made of alloy.