CN215567929U - Double-end-face mechanical sealing device capable of radially displacing - Google Patents
Double-end-face mechanical sealing device capable of radially displacing Download PDFInfo
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- CN215567929U CN215567929U CN202122085491.2U CN202122085491U CN215567929U CN 215567929 U CN215567929 U CN 215567929U CN 202122085491 U CN202122085491 U CN 202122085491U CN 215567929 U CN215567929 U CN 215567929U
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Abstract
The utility model discloses a double-end-face mechanical sealing device capable of radially displacing, which relates to the technical field of stirring equipment and comprises a bottom flange, a movable ring sleeve and a shaft sleeve which are sequentially arranged from bottom to top, wherein the inner wall surfaces of the movable ring sleeve and the shaft sleeve are arranged in a manner of being tightly attached to a stirring shaft; the sealing seat main body is connected with the bottom flange through a connecting mechanism, the connecting mechanism comprises a first pressing ring fastened on the bottom flange, a rubber ring horizontally arranged is connected between the top surface of the first pressing ring and the bottom surface of the sealing seat main body, a second pressing ring penetrates through the rubber ring through a bolt and is fastened with the first pressing ring, and a third pressing ring penetrates through the rubber ring through a bolt and is fastened with the sealing seat main body. The utility model can ensure that the rotating shaft can rotate and radially deviate, and has good sealing effect.
Description
Technical Field
The utility model relates to the technical field of stirring equipment, in particular to a double-end-face mechanical sealing device capable of radial displacement, which is used in cooperation with a top-mounted stirrer in the chemical industry, the food industry, the dye industry, the cosmetic industry and the pharmaceutical industry.
Background
Mechanical seal is widely used for mechanical stirring sealing device, and in the agitated vessel operation process of some high demands, the (mixing) shaft has the axial rotation motion and has radial displacement motion, adopts ordinary double mechanical seal technical to realize, and sealed very easy leaks if radial displacement causes equipment damage very easily greatly to lead to sealed effect not good, the double mechanical seal in present market can not radial displacement. In addition, in the installation process of the stirrer, installation errors occur more or less, but the small installation errors easily cause damage to the stirring shaft after the stirrer is used for a long time.
Disclosure of Invention
The utility model aims to overcome the defects of the technology and provide a double-end-face mechanical sealing device capable of radially displacing, which can ensure that a rotating shaft can rotate and radially shift and has a good sealing effect.
In order to realize the purpose of the utility model, the utility model adopts the technical scheme that:
a double-end-face mechanical sealing device capable of radially displacing comprises a bottom flange, a movable ring sleeve and a shaft sleeve which are sequentially arranged from bottom to top, wherein the inner wall surfaces of the movable ring sleeve and the shaft sleeve are tightly attached to a stirring shaft; the sealing seat is characterized in that the sealing seat main body is connected with the bottom flange through a connecting mechanism, the connecting mechanism comprises a first pressing ring fastened on the bottom flange, a horizontally arranged rubber ring is connected between the top surface of the first pressing ring and the bottom surface of the sealing seat main body, a second pressing ring is arranged above the first pressing ring, the second pressing ring penetrates through the rubber ring through a bolt and is fastened with the first pressing ring, a third pressing ring is arranged below the sealing seat main body, and the third pressing ring penetrates through the rubber ring through a bolt and is fastened with the sealing seat main body.
The further improvement of the utility model is that the part of the rubber ring which is not contacted with the first pressure ring and the sealing seat main body is upwards bent and protruded, so that the tensile resistance of the rubber ring in the shifting process of the stirring shaft is improved.
The utility model is further improved in that a PTFE sealing ring is arranged in a cavity formed between the sealing seat main body and the movable ring sleeve.
The utility model is further improved in that the top of the shaft sleeve is provided with a locking mechanism which can tightly press the shaft sleeve on the outer wall of the stirring shaft.
The utility model is further improved in that a first O-shaped rubber sealing ring is embedded on the inner wall surface of the movable ring sleeve, and a second O-shaped rubber sealing ring is embedded on the bottom wall of the first pressing ring.
The utility model has the further improvement that the bearing seat is provided with an oil nozzle communicated with the bearing cavity.
The utility model has the beneficial effects that:
according to the utility model, through the arrangement of the rubber ring, when radial offset vibration occurs in the operation process of the stirring shaft, the influence of the vibration on the internal structure of the stirring shaft can be well eliminated, the sealing effect is well protected, and meanwhile, the offset error in installation can be well compensated.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: the sealing device comprises a bottom flange 1, a movable ring sleeve 2, a shaft sleeve 3, a sealing seat main body 4, a bearing seat 5, a bearing cavity 6, a bearing 7, a sealing element 8, a first pressing ring 9, a rubber ring 10, a second pressing ring 11, a third pressing ring 12, a PTFE sealing ring 13, a locking mechanism 14, a first O-shaped rubber sealing ring 15, a second O-shaped rubber sealing ring 16 and an oil nozzle 17.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
As shown in fig. 1, a double-end-face mechanical sealing device capable of radial displacement comprises a bottom flange 1, a movable ring sleeve 2 and a shaft sleeve 3 which are sequentially arranged from bottom to top, wherein the inner wall surfaces of the movable ring sleeve 2 and the shaft sleeve 3 are arranged to be tightly attached to a stirring shaft, a sealing seat main body 4 is arranged on the outer sides of the movable ring sleeve 2 and the shaft sleeve 3, a bearing seat 5 is fixed on the sealing seat main body 4, a bearing cavity 6 provided with a bearing 7 is arranged in the bearing seat 5, the bearing seat 5 is connected with the outer wall of the shaft sleeve 3 through the bearing 7, and a sealing element 8 is arranged in a cavity formed between the bearing seat 5 and the shaft sleeve 3 and a cavity formed between the sealing seat main body 4 and the shaft sleeve 3 above and below the bearing 7 respectively; be connected through coupling mechanism between seal receptacle main part 4 and the bottom flange 1, coupling mechanism is including fastening in the first clamping ring 9 on bottom flange 1, be connected with the rubber ring 10 that the level set up between the top surface of first clamping ring 9 and the bottom surface of seal receptacle main part 4, first clamping ring 9 top is equipped with second clamping ring 11, second clamping ring 11 passes rubber ring 10 through the bolt and fastens with first clamping ring 9, seal receptacle main part 4 below is equipped with third clamping ring 12, third clamping ring 12 passes rubber ring 10 through the bolt and fastens with seal receptacle main part 4.
Specifically, the part of the rubber ring 10 which is not in contact with the first pressing ring 9 and the seal seat main body 4 is bent and protruded upwards, so that the tensile resistance of the rubber ring 10 in the shifting process of the stirring shaft is improved.
Specifically, a PTFE sealing ring 13 is arranged in a cavity formed between the sealing seat main body 4 and the movable ring sleeve 2.
In particular, the top of the sleeve 3 is provided with a locking mechanism 14 capable of pressing the sleeve 3 against the outer wall of the stirring shaft.
Specifically, a first O-shaped rubber sealing ring 15 is embedded on the inner wall surface of the movable ring sleeve 2, and a second O-shaped rubber sealing ring 16 is embedded on the bottom wall of the first pressing ring 9.
Specifically, the bearing seat 5 is provided with an oil nozzle 17 communicated with the bearing cavity 6.
The described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (6)
1. A double-end-face mechanical sealing device capable of radially displacing comprises a bottom flange, a movable ring sleeve and a shaft sleeve which are sequentially arranged from bottom to top, wherein the inner wall surfaces of the movable ring sleeve and the shaft sleeve are tightly attached to a stirring shaft; the sealing seat is characterized in that the sealing seat main body is connected with the bottom flange through a connecting mechanism, the connecting mechanism comprises a first pressing ring fastened on the bottom flange, a horizontally arranged rubber ring is connected between the top surface of the first pressing ring and the bottom surface of the sealing seat main body, a second pressing ring is arranged above the first pressing ring, the second pressing ring penetrates through the rubber ring through a bolt and is fastened with the first pressing ring, a third pressing ring is arranged below the sealing seat main body, and the third pressing ring penetrates through the rubber ring through a bolt and is fastened with the sealing seat main body.
2. A radially displaceable double mechanical seal according to claim 1 wherein the portion of the rubber ring not in contact with the first pressure ring and the seal housing body is upwardly convex.
3. A radially displaceable double mechanical seal according to claim 1 wherein a PTFE seal ring is disposed in the cavity formed between the seal housing body and the moving collar.
4. A radially displaceable double mechanical seal according to claim 1, wherein said sleeve has a locking mechanism at its top for pressing the sleeve against the outer wall of the mixer shaft.
5. The radially displaceable double mechanical seal of claim 1, wherein a first O-ring seal is disposed on an inner wall of said movable collar, and a second O-ring seal is disposed on a bottom wall of said first pressure ring.
6. The radially displaceable double mechanical seal of claim 1, wherein said bearing housing defines a nipple communicating with said bearing cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122085491.2U CN215567929U (en) | 2021-08-31 | 2021-08-31 | Double-end-face mechanical sealing device capable of radially displacing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122085491.2U CN215567929U (en) | 2021-08-31 | 2021-08-31 | Double-end-face mechanical sealing device capable of radially displacing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215567929U true CN215567929U (en) | 2022-01-18 |
Family
ID=79845011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122085491.2U Active CN215567929U (en) | 2021-08-31 | 2021-08-31 | Double-end-face mechanical sealing device capable of radially displacing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215567929U (en) |
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2021
- 2021-08-31 CN CN202122085491.2U patent/CN215567929U/en active Active
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