Sealing structure of rotating shaft and rotating sealing shaft

Abstract

The invention discloses a sealing structure of a rotating shaft and a rotating sealing shaft, and belongs to the field of bioreactors, and the rotating shaft at least comprises a bearing and a rotating shaft penetrating through the bearing. The sealing structure comprises a shell fixedly arranged on the outer side of the bearing in a sleeving mode, a chuck clamped at one end of the shell and a flange plate fixedly arranged on a rotating shaft in a sleeving mode, and the flange plate is located between the bearing and the chuck. And first sealing rings connected with the flange plate are arranged in the shell corresponding to the outer side of the bearing and on the chuck. And an oil seal is fixedly arranged on the shell corresponding to one end, far away from the flange plate, of the bearing. The sealing structure can achieve a complete sealing effect when the rotating shaft rotates at a high speed; meanwhile, the bearing can be effectively prevented from being exposed, so that a culture medium is prevented from being in contact with the bearing, and the safety of cell culture is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of bioreactors, in particular to a sealing structure of a rotating shaft and a rotating sealing shaft used for a disposable bioreactor. Background Art

[0002] A disposable bioreactor is a device used to replace the traditional stirred biofermentation tank for animal cell culture. It consists of a disposable reaction vessel and a stirring mechanism. The design needs to take into account the sealing problem of the rotating shaft. If the sealing is not good, on the one hand, the culture medium in the bag is easy to leak through the rotating shaft, and on the other hand, the external gas is easy to enter through the rotating shaft and contaminate the medium in the bag.

[0003] The traditional sealing method is generally to directly groove the shaft and put the sealing ring on the bearing. This method can generally achieve the required sealing effect on a fixed shaft, but the sealing ring is prone to wear due to the rotation of the rotating shaft, especially when the rotating shaft rotates unbalanced, the wear is aggravated and the sealing effect is greatly reduced; and the bearing is exposed to the outside and cannot meet the sterile conditions.

[0004] Therefore, the present invention provides a sealing structure of a rotating shaft and a rotating sealing shaft to solve the above problems. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] The present invention provides a sealing structure of a rotating shaft and a rotating sealing shaft, aiming to solve the problem in the background technology that the existing shaft sealing form is easy to wear, the sealing effect is reduced due to the use time, and it cannot be used for a long time.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a sealing structure for a rotating shaft, wherein the rotating shaft at least comprises a bearing and a rotating shaft passing through the bearing.

[0009] The sealing structure includes a housing fixedly sleeved on the outer side of the bearing, a chuck engaged at one end of the housing, and a flange fixedly sleeved on the rotating shaft, wherein the flange is located between the bearing and the chuck; a first sealing ring connected to the flange is arranged on the inner side of the housing corresponding to the outer side of the bearing and the chuck; an oil seal is fixedly arranged on the housing corresponding to the end of the bearing away from the flange. The first sealing ring and the oil seal can effectively seal the bearing and the housing, avoid the bearing being exposed to the outside, and ensure the safety of cell culture; adopting this sealing form, when the rotating shaft rotates at high speed, a complete sealing effect can be achieved, and it can be used for a long time.

[0010] Preferably, a sealing ring connected to the housing is fixedly provided on a surface of the chuck close to the flange.

[0011] Preferably, a second sealing ring connected to the flange is fixedly provided on the chuck corresponding to the inner side of the first sealing ring.

[0012] A rotary sealing shaft comprises the above-mentioned sealing structure.

[0013] (III) Beneficial effects

[0014] The sealing structure is simple in structure and easy to use. Through the sealing structure, a complete sealing effect can be achieved when the shaft rotates at high speed; at the same time, the bearing can be effectively prevented from being exposed to the outside, thereby preventing the culture medium from contacting the bearing, thereby ensuring the safety of cell culture. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a sealing structure of a rotating shaft and a rotating sealing shaft;

[0016] Figure 2 It is a schematic diagram of a sealing structure of a rotating shaft and an exploded structure of a rotating sealing shaft;

[0017] Figure 3 The invention is a sealing structure of a rotating shaft and a schematic diagram of a cross-sectional structure of a rotating sealing shaft.

[0018] In the figure:

[0019] 1. Bearing; 2. Drive shaft; 3. Housing; 4. Flange; 5. Chuck; 6. First sealing ring; 7. Sealing ring; 8. Second sealing ring; 9. Oil seal. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] The present invention provides a sealing structure for a rotating shaft, wherein the rotating shaft at least comprises a bearing 1 and a rotating shaft 2 penetrating the bearing 1 .

[0022] like Figure 1 , Figure 2 and Figure 3As shown, the sealing structure includes a housing 3 fixedly sleeved on the outer side of the bearing 1, a chuck 4 engaged at one end of the housing 3, and a flange 5 fixedly sleeved on the rotating shaft 2, wherein the flange 5 is located between the bearing 1 and the chuck 5; a first sealing ring 6 connected to the flange 5 is arranged inside the housing 3 corresponding to the outer side of the bearing 1 and on the chuck 5. An oil seal 9 is fixedly arranged on the housing 3 corresponding to the end of the bearing 1 away from the flange 4. In order to ensure the sealing between the bearing 1 and the housing 3, a second sealing ring 8 connected to the flange 4 is fixedly arranged on the chuck 5 corresponding to the inner side of the first sealing ring 6.

[0023] The rotating shaft is completely sealed in the housing 3 by the first sealing ring 6, the second sealing ring 8 and the oil seal 9, so that the rotating shaft 2 can be completely sealed when rotating at high speed and can be used for a long time; at the same time, it can effectively prevent the bearing 1 from being exposed to the outside and prevent the medium in the container from contacting the bearing 1, thereby ensuring the safety of cell culture.

[0024] Furthermore, a sealing ring 7 connected to the shell 3 is fixedly provided on one side of the chuck 5 close to the flange 4; the chuck 5 and the shell 1 are sealed by the sealing ring 7, so that a closed space is formed between the rotating shaft and the interior of the shell 3, thereby achieving a completely sealed effect.

[0025] In addition, the present invention also provides a rotary sealing shaft, which includes the above-mentioned sealing structure.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sealing structure for a rotating shaft, the rotating shaft comprising at least a bearing (1) and a rotating shaft (2) passing through the bearing (1); Features: The sealing structure comprises a housing (3) fixedly sleeved on the outside of the bearing (1), a chuck (4) clamped on one end of the housing (3), and a flange (5) fixedly sleeved on the rotating shaft (2), wherein the flange (5) is located between the bearing (1) and the chuck (5); A first sealing ring (6) connected to the flange (5) is provided inside the housing (3) corresponding to the outer side of the bearing (1) and on the chuck (5); An oil seal (9) is fixedly provided on the housing (3) at an end corresponding to the bearing (1) away from the flange (4).

2. The sealing structure of the rotating shaft according to claim 1, characterized in that: A sealing ring (7) connected to the housing (3) is fixedly provided on one side of the chuck (5) close to the flange (4).

3. The sealing structure of the rotating shaft according to claim 1, characterized in that: A second sealing ring (8) connected to the flange (4) is fixedly arranged on the inner side of the chuck (5) corresponding to the first sealing ring (6).

4. A rotary sealing shaft, characterized in that: The rotating sealing shaft comprises the sealing structure according to any one of claims 1-4.

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