CN217130323U

CN217130323U - Rotary motion sealing mechanism

Info

Publication number: CN217130323U
Application number: CN202220136008.0U
Authority: CN
Inventors: 张果; 蓝峰; 李健; 瞿骑龙; 艾仕义; 王�锋
Original assignee: Aifake Oriental Testing Technology Chengdu Co ltd
Current assignee: Aifake Oriental Testing Technology Chengdu Co ltd
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2022-08-05
Anticipated expiration: 2032-01-18

Abstract

The utility model provides a rotary motion sealing mechanism, including locating outside bush and the bearing of axis of rotation, the bearing outside is equipped with the bearing bracket, and bearing bracket both ends are equipped with front end housing and rear end cap respectively, and the front end housing is located vacuum tank wall one side, and the axis of rotation tip is equipped with the parallel key. The utility model discloses simple structure seals the pairing rotation transmission shaft, and is sealed effectual, prevents that the vacuum chamber from influencing vacuum when managing to find time transmission shaft position gas leakage.

Description

Rotary motion sealing mechanism

Technical Field

The utility model belongs to the technical field of the helium leak hunting device in vacuum, concretely relates to rotary motion sealing mechanism.

Background

In the vacuum helium leak detection process, a product to be subjected to leak detection is required to be sent into a vacuum box, helium is used as a tracer gas, the helium is filled into a workpiece after the vacuum box is vacuumized, and then the leak condition of the workpiece is detected through a helium leak detector.

A power line body is arranged in the vacuum box, and a power motor of the vacuum box is arranged outside the box; the transmission shaft passes through the box wall and has high-speed rotation motion. In the prior art, when the vacuum box is evacuated, the transmission shaft part is easy to generate air leakage due to high-speed rotation movement, and the vacuum degree is influenced. Therefore, a sealing mechanism is needed to effectively seal the transmission shaft.

SUMMERY OF THE UTILITY MODEL

Based on above problem, the utility model aims to provide a rotary motion sealing mechanism.

In order to realize the above purpose, the utility model discloses a technical scheme be:

the utility model provides a rotary motion sealing mechanism, is including locating outside bush and the bearing of axis of rotation, the bearing outside is equipped with the bearing bracket, and bearing bracket both ends are equipped with front end housing and rear end cap respectively, and the front end housing is located vacuum tank wall one side, and the axis of rotation tip is equipped with the parallel key.

Preferably, an oil seal is arranged among the front end cover, the rotating shaft and the vacuum box wall.

Further preferably, a retainer ring is arranged between the rear end cover and the rotating shaft and used for fixing the transmission shaft and the bearing.

Further preferably, the front end cap and the rear end cap are connected with the bearing bracket through screws for connecting the components into an integral mechanism.

Further preferably, a seal ring and an oil seal are arranged between the front end cover and the rotating shaft. For sealing the drive shaft.

Further preferably, a seal ring is provided between the front end cap and the bearing holder. For sealing the front end cap.

Further preferably, a flange is provided between the vacuum chamber wall and the bearing bracket. Used for installing and fixing the whole mechanism.

Further preferably, a sealing ring is arranged between the bearing receptacle and the flange for sealing the bearing receptacle.

The utility model has the advantages that:

the utility model discloses simple structure seals the pairing rotation transmission shaft, and is sealed effectual, prevents that the vacuum chamber from influencing vacuum when managing to find time transmission shaft position gas leakage.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is a sectional view a-a.

The vacuum box comprises a vacuum box wall 1, a bearing 2, a flat key 3, a screw 4, a rotating shaft 5, a bearing bracket 6, a front end cover 7, a rear end cover 8, a bushing 9, a flange 10, a retainer ring 11, an oil seal 12 and a sealing ring 13.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

as shown in fig. 1 to 3, the rotary motion sealing mechanism comprises a bushing 9 and a bearing 2 which are arranged outside a rotating shaft 5, wherein a bearing bracket 6 is arranged outside the bearing 2, a front end cover 7 and a rear end cover 8 are respectively arranged at two ends of the bearing bracket 6, the front end cover 7 is positioned on one side of a vacuum box wall 1, and a flat key 3 is arranged at the end part of the rotating shaft 5.

And an oil seal 12 is arranged among the front end cover 7, the rotating shaft 5 and the vacuum box wall 1. And a retainer ring 11 is arranged between the rear end cover 8 and the rotating shaft 5. The front end cover 7 and the rear end cover 8 are connected with the bearing bracket 6 through screws 4. And a sealing ring 13 is arranged between the front end cover 7 and the rotating shaft 5. A sealing ring 13 is arranged between the front end cover 7 and the bearing bracket 6. A flange 10 is arranged between the vacuum box wall 1 and the bearing bracket 6. A sealing ring 13 is arranged between the bearing bracket 6 and the flange 10. The bearing bracket 6 presses the vacuum box wall 1 through a screw, a spring washer and a flat washer.

The above embodiments of the present invention are merely examples for illustrating the present invention and are not intended to limit the embodiments of the present invention. Variations and modifications in other variations will occur to those skilled in the art upon reading the foregoing description. Not all embodiments are exhaustive. All obvious changes or variations which are introduced by the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A rotary motion sealing mechanism characterized by: including locating outside bush and the bearing of axis of rotation, the bearing outside is equipped with the bearing bracket, and bearing bracket both ends are equipped with front end housing and rear end cap respectively, and the front end housing is located vacuum tank wall one side, and the axis of rotation tip is equipped with the parallel key.

2. A rotary motion seal mechanism according to claim 1, wherein: and oil seals are arranged among the front end cover, the rotating shaft and the vacuum box wall.

3. A rotary motion seal mechanism according to claim 1 or claim 2, wherein: and a check ring is arranged between the rear end cover and the rotating shaft.

4. A rotary motion seal mechanism according to claim 1 or claim 2, wherein: the front end cover and the rear end cover are connected with the bearing bracket through screws.

5. A rotary motion seal mechanism according to claim 1 or claim 2, wherein: and a sealing ring is arranged between the front end cover and the rotating shaft.

6. A rotary motion seal mechanism according to claim 1 or claim 2, wherein: and a sealing ring is arranged between the front end cover and the bearing bracket.

7. A rotary motion seal mechanism according to claim 1 or claim 2, wherein: and a flange is arranged between the vacuum box wall and the bearing bracket.

8. A rotary motion seal mechanism according to claim 7, wherein: and a sealing ring is arranged between the bearing bracket and the flange.