CN220727117U

CN220727117U - Dynamic ring type mechanical oil seal

Info

Publication number: CN220727117U
Application number: CN202322322655.8U
Authority: CN
Inventors: 何燕飞; 韩志强; 李志超
Original assignee: Dalian Chuangming Machinery Co ltd
Current assignee: Dalian Chuangming Machinery Co ltd
Priority date: 2023-08-29
Filing date: 2023-08-29
Publication date: 2024-04-05
Anticipated expiration: 2033-08-29

Abstract

The utility model relates to the technical field of mechanical oil seals, and discloses a power ring type mechanical oil seal which comprises a stationary ring, a movable ring and a sealing assembly, wherein the stationary ring is fixedly connected with an end cover, the movable ring is arranged on a rotating shaft, the front end of the stationary ring is a first connecting ring, the rear end of the movable ring is a second connecting ring, and the end part of the second connecting ring is abutted against the inner end surface of the stationary ring. According to the utility model, the first sealing ring can completely seal the gap between the stationary ring and the end cover, grease can be completely prevented from leaking outwards from the gap between the stationary ring and the end cover, the second sealing ring can completely seal the gap between the movable ring and the rotating shaft, grease can be completely prevented from leaking outwards from the gap between the movable ring and the rotating shaft, the third sealing ring seals the gap between the first connecting ring and the second connecting ring, the possibility that grease outwards flows out from the gap between the first connecting ring and the second connecting ring is reduced, and the steam groove plays a role in preventing steam, so that the service life of the oil seal is greatly prolonged.

Description

Dynamic ring type mechanical oil seal

Technical Field

The utility model relates to the technical field of mechanical oil seals, in particular to a power ring type mechanical oil seal.

Background

Oil seals are mechanical elements used to seal grease (oil is the most common liquid substance in transmission systems, also referred to generally as liquid substance meaning) and isolate the components of the transmission components that require lubrication from the output components, and prevent oil leakage.

Traditional oil blanket structure mostly can not play comparatively qualified sealed effect, and traditional oil blanket can produce wearing and tearing to the pivot simultaneously, influences sealed effect.

Disclosure of Invention

In order to make up for the defects, the utility model provides a power ring type mechanical oil seal, which aims to solve the problem that the sealing effect is reduced due to abrasion of part of oil seal structures in the prior art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the power ring type mechanical oil seal comprises a static ring, a movable ring and a sealing assembly, wherein the static ring is fixedly connected with an end cover, the movable ring is arranged on a rotating shaft, the front end of the static ring is a first connecting ring, the rear end of the movable ring is a second connecting ring, the end part of the second connecting ring is propped against the inner end surface of the static ring, outer comb teeth are arranged on the outer side of the upper end of the first connecting ring and matched with the movable ring and inner comb teeth, two second sealing grooves are arranged at the contact part of the outer side of the movable ring and the rotating shaft, a second sealing ring is arranged in each second sealing groove, a third sealing groove and a fourth sealing groove are correspondingly arranged on the inner side of each first connecting ring and the inner side of each second connecting ring, and a third sealing ring is arranged in each third sealing groove.

As a further description of the above technical solution:

a first sealing groove is formed in the position, corresponding to the end cover, of the outer side of the static ring, and a first sealing ring is installed in the first sealing groove.

As a further description of the above technical solution:

the stationary ring is close to the outer comb teeth and is provided with an integrally formed positioning boss, the outer diameter of the positioning boss is larger than the size of a positioning groove of the stationary ring, the corner between the positioning boss and the stationary ring is a positioning groove, and the groove wall of the positioning groove abuts against the end cover.

As a further description of the above technical solution:

the end face of the movable ring, which is close to the inner comb teeth, is provided with steam grooves, the inner comb teeth are matched with the outer comb teeth, and the steam grooves play a certain role in preventing steam, so that the service life of the oil seal is greatly prolonged.

As a further description of the above technical solution:

the first sealing ring, the second sealing ring and the third sealing ring are all rubber elastic pieces.

The utility model has the following beneficial effects:

according to the utility model, the first sealing ring can completely seal the gap between the stationary ring and the end cover, grease can be completely prevented from leaking outwards from the gap between the stationary ring and the end cover, the second sealing ring can completely seal the gap between the movable ring and the rotating shaft, grease can be completely prevented from leaking outwards from the gap between the movable ring and the rotating shaft, the third sealing ring seals the gap between the first connecting ring and the second connecting ring, the possibility that grease outwards flows out from the gap between the first connecting ring and the second connecting ring is reduced, and the steam groove plays a role in preventing steam, so that the service life of the oil seal is greatly prolonged.

Drawings

FIG. 1 is an external structural view of a power ring type mechanical oil seal provided by the utility model;

FIG. 2 is a front view cross-section structure diagram of the power ring type mechanical oil seal provided by the utility model;

fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Legend description:

1. a stationary ring; 11. a first seal groove; 12. a positioning groove; 2. a moving ring; 21. a second seal groove; 3. a first connection ring; 31. a third seal groove; 4. a second connecting ring; 41. a fourth seal groove; 51. a first seal ring; 52. a second seal ring; 53. a third seal ring; 6. an end cap; 7. a rotating shaft; 8. inner comb teeth; 61. outer comb teeth; 9. positioning the boss; 22. a steam groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, one embodiment provided by the present utility model is: the dynamic ring type mechanical oil seal comprises a static ring 1 and a dynamic ring 2, wherein sealing components are arranged on the static ring 1 and the dynamic ring 2.

Referring to fig. 1-2, a stationary ring 1 is fixedly connected with an end cover 6, the stationary ring 1 is close to a retaining ring groove and is provided with an integrally formed positioning boss 9, the outer diameter of the positioning boss 9 is far larger than the installation size (the size of a positioning groove 12) of the stationary ring 1, a corner between the positioning boss 9 and the stationary ring 1 is provided with the positioning groove 12, the positioning groove 12 is used for abutting the end cover 6, a movable ring 2 is fixedly connected with a rotating shaft 7, the stationary ring 1 is rotationally connected with the movable ring 2, and inner comb teeth 8 are matched with outer comb teeth 61.

Referring to fig. 2-3, a first connecting ring 3 is coaxially arranged on the side wall of the stationary ring 1, which is close to the moving ring 2, the inner ring wall of the first connecting ring 3 is attached to the rotating shaft 7, a second connecting ring 4 is coaxially arranged on the side wall of the moving ring 2, which is close to the stationary ring 1, the inner ring wall of the second connecting ring 4 is attached to the outer ring wall of the first connecting ring 3, the end part of the first connecting ring 3 is abutted against the end wall of the moving ring 2, and the end wall of the second connecting ring 4 is abutted against the end wall of the stationary ring 1.

Referring to fig. 2-3, the sealing assembly comprises a first sealing ring 51, the first sealing ring 51 is coaxially sleeved outside the stationary ring 1, a first sealing groove 11 is formed in the groove wall of the positioning groove 12, the first sealing ring 51 is located in the first sealing groove 11, and the outer annular wall of the first sealing ring 51 abuts against the inner annular wall of the end cover 6.

Referring to fig. 2 to 3, the first seal ring 51 may completely seal the gap between the stationary ring 1 and the end cap 6, and completely prevent grease from leaking out of the gap between the stationary ring 1 and the end cap 6.

Referring to fig. 2, the sealing assembly includes a second sealing ring 52, the second sealing ring 52 is coaxially sleeved outside the rotating shaft 7, two second sealing grooves 21 are formed in the inner annular wall of the moving ring 2, the second sealing ring 52 is located in the second sealing groove 21, and the outer annular wall of the second sealing ring 52 abuts against the bottom wall of the second sealing groove 21.

Referring to fig. 2 to 3, the second seal ring 52 can completely seal the gap between the moving ring 2 and the rotating shaft 7, and completely prevent grease from leaking out of the gap between the moving ring 2 and the rotating shaft 7.

Referring to fig. 2-3, a third sealing groove 31 is formed in the outer annular wall of the first connecting ring 3, a fourth sealing groove 41 is formed in the inner annular wall of the second connecting ring 4, the third sealing groove 31 is communicated with the fourth sealing groove 41, and a third sealing ring 53 is coaxially sleeved in the third sealing groove 31.

Referring to fig. 2 to 3, the third seal ring 53 seals the gap between the first and second connection rings 3 and 4, reducing the possibility of grease flowing out from the gap between the first and second connection rings 3 and 4.

Referring to fig. 3, the end face of the positioning boss 9 is integrally formed with a baffle ring, the baffle ring is located on one side of the lower portion of the positioning boss 9 away from the positioning groove 12, the end face of the moving ring 2, which is close to the inner comb teeth 8, is provided with a steam groove table 22, the inner comb teeth 8 and the outer comb teeth 61 are matched with each other, and the steam groove (22) plays a certain role in preventing steam, so that the service life of the oil seal is greatly prolonged.

Referring to fig. 3, the inner comb teeth 8 and the outer comb teeth 61 further limit the connection between the stationary ring 1 and the moving ring 2, so that the contact area between the stationary ring 1 and the moving ring 2 is increased, and the moving ring 2 is more stable in the rotating process and is not separated due to overlarge channeling.

Referring to fig. 3, the first seal ring 51, the second seal ring 52, and the third seal ring 53 are elastic members made of rubber or the like.

Working principle: when the oil seal is assembled, the first sealing ring 51 is sleeved in the first sealing groove 11, the third sealing ring 53 is sleeved in the third sealing groove 31, then the second sealing ring 52 and the moving ring 2 are sleeved on the rotating shaft 7, the second connecting ring 4 is sleeved outside the first connecting ring 3, and an external force is applied to the moving ring 2, so that the third sealing ring 53 is deformed and clamped in the fourth sealing groove 41. Finally, the oil seal is integrally pressed in the end cover 6, so that the positioning groove 12 is abutted against the end cover 6.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The power ring type mechanical oil seal is characterized in that: including quiet ring (1), rotating ring (2) and seal assembly, quiet ring (1) and end cover (6) fixed connection, rotating ring (2) install on pivot (7), quiet ring (1) front end is first go-between (3), rotating ring (2) rear end is second go-between (4), second go-between (4) tip and quiet ring (1) interior terminal surface support and close, first go-between (3) upper end outside is equipped with outer broach (61) and rotating ring (2), interior broach (8) cooperate, rotating ring (2) outside and pivot (7) contact department are equipped with two second seal grooves (21), install second seal groove (52) in second seal groove (21), first go-between (3) and second go-between (4) inboard correspondence are equipped with third seal groove (31) and fourth seal groove (41) from top to bottom, install third seal groove (53) in third seal groove (31).

2. The power ring mechanical oil seal of claim 1, wherein: a first sealing groove (11) is formed in the position, corresponding to the end cover (6), of the outer side of the static ring (1), and a first sealing ring (51) is installed in the first sealing groove (11).

3. The power ring mechanical oil seal of claim 1, wherein: the static ring (1) is close to the outer comb teeth (61) and is provided with an integrated positioning boss (9), the outer diameter of the positioning boss (9) is larger than the size of a positioning groove (12) of the static ring (1), the corner between the positioning boss (9) and the static ring (1) is the positioning groove (12), and the groove wall of the positioning groove (12) is propped against the end cover (6).

4. The power ring mechanical oil seal of claim 1, wherein: the end face, close to the inner comb teeth (8), of the movable ring (2) is provided with steam grooves (22), the inner comb teeth (8) are matched with the outer comb teeth (61), and the steam grooves (22) play a certain role in preventing steam, so that the service life of the oil seal is greatly prolonged.

5. The power ring mechanical oil seal of claim 2, wherein: the first sealing ring (51), the second sealing ring (52) and the third sealing ring (53) are all rubber elastic parts.