CN209293995U - A kind of negative pressure gland seal device - Google Patents
A kind of negative pressure gland seal device Download PDFInfo
- Publication number
- CN209293995U CN209293995U CN201822204587.4U CN201822204587U CN209293995U CN 209293995 U CN209293995 U CN 209293995U CN 201822204587 U CN201822204587 U CN 201822204587U CN 209293995 U CN209293995 U CN 209293995U
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- rotating shaft
- sealing
- cavity
- shell
- negative pressure
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Abstract
The utility model relates to sealing device technical field more particularly to a kind of negative pressure gland seal devices.The utility model discloses a kind of negative pressure gland seal devices, by injecting sealing liquid to liquid injection port, so that the shaft between third rotating shaft sealing component and the second rotating assembly reaches sealing state, by to vacuum buffer cavity extraction section vacuum, so that the barometric gradient between material cavity and vacuum buffer cavity reduces, prevent ambient atmos from entering material cavity, advantageously ensure that the vacuum degree of material cavity, in addition, if the liquid leakage of fluid-tight cavity, the liquid of fluid-tight cavity can enter in vacuum buffer cavity, avoid enter into material cavity, ensure again the vacuum degree of material cavity, improve the yield of product in material cavity, it is undesirable to solve existing shaft sealing device sealing performance, not the technical issues of not can guarantee product quality.
Description
Technical field
The utility model relates to sealing device technical field more particularly to a kind of negative pressure gland seal devices.
Background technique
Currently, mostly using oil sealing to guarantee that the vacuum of material material cavity in vacuum leaks at shaft or filling out
The structure types such as material sealing are sealed axle portion.But the structure type poor reliability of single oil sealing sealing or packing seal,
Sealing performance is undesirable, not can guarantee product quality.
Utility model content
The utility model discloses a kind of negative pressure gland seal devices, solve existing shaft sealing device sealing performance and pay no attention to
The technical issues of thinking, not can guarantee product quality.
The utility model provides a kind of negative pressure gland seal device, comprising: shell, first rotating shaft seal assembly, the second shaft
Seal assembly and third rotating shaft sealing component；
The shell is socketed in the outside of shaft；
The first rotating shaft seal assembly, the second rotating shaft sealing component and third rotating shaft sealing component are successively radially set
It sets between the shell and the shaft；
It is constituted on the outside of the first rotating shaft seal assembly, the shell, the second rotating shaft sealing component and the shaft
Vacuum buffer cavity, the surface of shell are provided with the vacuum port being connected to the vacuum buffer cavity；
It is constituted on the outside of the second rotating shaft sealing component, the shell, the third rotating shaft sealing component and the shaft
Fluid-tight cavity, the surface of shell are provided with the liquid injection port being connected to the fluid-tight cavity；
The first rotating shaft seal assembly is provided with material cavity away from the side of the vacuum buffer cavity.
Preferably, the surface of shell is provided with the first leakage fluid dram being connected to the fluid-tight cavity.
Preferably, the bottom of the shell is arranged in first leakage fluid dram.
Preferably, the surface of shell is provided with the second leakage fluid dram being connected to the vacuum buffer cavity.
Preferably, the bottom of the shell is arranged in second leakage fluid dram.
Preferably, the first rotating shaft seal assembly is oil sealing sealing component, packing seal component or mechanical sealing assembly.
Preferably, the second rotating shaft sealing component is oil sealing sealing component, packing seal component or mechanical sealing assembly.
Preferably, the third rotating shaft sealing component is oil sealing sealing component, packing seal component or mechanical sealing assembly.
Preferably, the first rotating shaft seal assembly, the second rotating shaft sealing component and the third rotating shaft sealing group
Part is oil sealing sealing component.
Preferably, the section of the shell is selected from round, rectangle or ellipse.
The utility model provides a kind of negative pressure gland seal device, wherein the second rotating shaft sealing component, shell, third shaft
Fluid-tight cavity is constituted on the outside of seal assembly and shaft, by injecting sealing liquid to liquid injection port, so that third rotating shaft sealing component
Shaft between the second rotating assembly reaches sealing state, first rotating shaft seal assembly, shell, the second rotating shaft sealing component and
Vacuum buffer cavity is constituted on the outside of shaft, by vacuum buffer cavity extraction section vacuum, so that material cavity and vacuum are slow
The barometric gradient rushed between cavity reduces, and prevents ambient atmos from entering material cavity, advantageously ensures that the vacuum degree of material cavity,
In addition, the liquid of fluid-tight cavity can enter in vacuum buffer cavity if the liquid leakage of fluid-tight cavity, material cavity is avoided enter into
Body ensures again the vacuum degree of material cavity, improves the yield of product in material cavity.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is a kind of structural schematic diagram of the negative pressure gland seal device provided in the utility model embodiment；
Wherein, appended drawing reference is as follows:
1, material cavity；2, first rotating shaft seal assembly；3, the second rotating shaft sealing component；4, third rotating shaft sealing component；
5, vacuum buffer cavity；6, fluid-tight cavity；7, vacuum port；8, liquid injection port；9, the first leakage fluid dram；10, the second leakage fluid dram；11, turn
Axis；12, shell.
Specific embodiment
The utility model embodiment discloses a kind of negative pressure gland seal device, for solving existing shaft sealing device sealing
The technical issues of performance is undesirable, not can guarantee product quality.
Referring to Fig. 1, a kind of structural schematic diagram of the negative pressure gland seal device provided in the utility model embodiment.
A kind of one embodiment of the negative pressure gland seal device provided in the utility model embodiment includes: shell 12, first
Rotating shaft sealing component 2, the second rotating shaft sealing component 3 and third rotating shaft sealing component 4.
Shell 12 is socketed in the outside of shaft 11.
First rotating shaft seal assembly 2, the second rotating shaft sealing component 3 and third rotating shaft sealing component 4 are successively radially arranged in
Between shell 12 and shaft 11.
Vacuum buffer cavity is constituted on the outside of first rotating shaft seal assembly 2, shell 12, the second rotating shaft sealing component 3 and shaft
5,12 surface of shell is provided with the vacuum port 7 being connected to vacuum buffer cavity 5, for vacuumizing to vacuum buffer cavity 5.
The setting position of vacuum port 7 has certain level height, is not specifically limited herein to the position of vacuum port 7.
In the utility model embodiment, the top of shell 12 is arranged in vacuum port 7, convenient for the operation of staff.If true
7 are eated dishes without rice or wine set on lower, leakage will enter pipeline and be pumped into vacuum equipment, damage equipment.
Fluid-tight cavity 6 is constituted on the outside of second rotating shaft sealing component 3, shell 12, third rotating shaft sealing component 4 and shaft 11,
12 surface of shell is provided with the liquid injection port 8 being connected to fluid-tight cavity 6, for the injection sealing liquid into fluid-tight cavity 6.
The setting position of liquid injection port 8 has certain level height, is conducive to the storage for sealing liquid, herein to liquid injection port
8 position is not specifically limited.
In the utility model embodiment, the top of shell 12 is arranged in liquid injection port 8.
First rotating shaft seal assembly 2 is provided with material cavity 1 away from the side of vacuum buffer cavity 5.
The side of material cavity 1 is arranged in first rotating shaft seal assembly 2, is sealed material cavity for the prior art, this
Place does not repeat them here.
It should be noted that material cavity 1 is also equipped with vacuum port 7, for vacuumizing to material cavity 1.
In the utility model embodiment, by liquid injection port 8 inject sealing liquid so that third rotating shaft sealing component 4 with
Shaft 11 between second rotating shaft sealing component 3 reaches sealing state, by making to 5 extraction section vacuum of vacuum buffer cavity
The barometric gradient obtained between material cavity 1 and vacuum buffer cavity 5 reduces, and prevents ambient atmos from entering material cavity 1, is conducive to
Guarantee the vacuum degree of material cavity 1, in addition, the liquid of fluid-tight cavity 6 can be slow into vacuum if the liquid leakage of fluid-tight cavity 6
It rushes in cavity 5, avoids enter into material cavity 1, ensure again the vacuum degree of material cavity 1, improve product in material cavity
Yield.
It is that one embodiment of negative pressure turning gear provided by the embodiment of the utility model a kind of is retouched in detail above
It states, a kind of another embodiment of negative pressure turning gear provided by the embodiment of the utility model will be retouched in detail below
It states.
Referring to Fig. 1, in a kind of another embodiment of the negative pressure turning gear provided in the utility model embodiment, shell
12 surface of body is provided with the first leakage fluid dram 9 being connected to fluid-tight cavity 6, for sealing liquid to be discharged.
Further, the level height of the first leakage fluid dram 9 is less than the level height of liquid injection port 8, in order to the discharge of liquid,
The setting position of the first leakage fluid dram 9 is not specifically limited herein, the first leakage fluid dram 9 can be turned in the bottom of shell 12,
On the side wall for the shell 12 that can be set.
In the utility model embodiment, the bottom of shell 12 is arranged in the first leakage fluid dram 9, avoids residual in fluid-tight cavity 6
Liquid is sealed, the discharge for sealing liquid is conducive to.
Further, 12 surface of shell is provided with the second leakage fluid dram 10 being connected to vacuum buffer cavity 5, is used for discharge liquor
The sealing liquid that envelope cavity 6 leaks out.
Further, the second leakage fluid dram 10 can be set in the bottom of shell 12, and the side wall in shell 12 also can be set
On, the height of the second leakage fluid dram 10 cannot be too high, is not specifically limited herein to the position of turning of the second leakage fluid dram 10.
When the sealing liquid leakage of fluid-tight cavity 6, into vacuum buffer cavity 5, the second leakage fluid dram 10 can be discharged
The sealing liquid of leakage.
In the utility model embodiment, the bottom of shell 12 is arranged in the second leakage fluid dram 10, avoids in vacuum buffer cavity 5
Residual seal liquid is conducive to the discharge for sealing liquid.
Further, first rotating shaft seal assembly 2 can be oil sealing sealing component, packing seal component or mechanical seal group
Part, the second rotating shaft sealing component 3 can be oil sealing sealing component, packing seal component or mechanical sealing assembly, and third shaft is close
Sealing assembly 4 or oil sealing sealing component, packing seal component or mechanical sealing assembly.
Oil sealing sealing component, packing seal component or mechanical sealing assembly are the prior art, are not repeated herein.
Further, first rotating shaft seal assembly 2, the second rotating shaft sealing component 3 and third rotating shaft sealing component 4 are oil
It is sealed sealing assembly.
It should be noted that the structure type of mechanical seal is higher to the design, processing and matching requirements of shaft 11, work as hair
Its maintenance cost is high when raw damage, therefore, in the utility model embodiment, first rotating shaft seal assembly 2, the second rotating shaft sealing group
Part 3 and third rotating shaft sealing component 4 are oil sealing sealing component, and oil sealing sealing component is most preferably, so that the utility model mentions
The negative pressure shaft seal structure of confession is simple, cheap.
Further, the section of shell 12 is selected from round, rectangle or ellipse.
In the utility model embodiment, the section of shell 12 is circle, does not do and has to the shape in the section of shell 12 herein
Body limits.
A kind of negative pressure gland seal device provided by the utility model is described in detail above, for the one of this field
As technical staff have change in specific embodiments and applications based on the idea of the embodiment of the present invention
Place, in conclusion the content of the present specification should not be construed as a limitation of the present invention.
Claims (10)
1. a kind of negative pressure gland seal device characterized by comprising shell, first rotating shaft seal assembly, the second rotating shaft sealing component
With third rotating shaft sealing component；
The shell is socketed in the outside of shaft；
The first rotating shaft seal assembly, the second rotating shaft sealing component and third rotating shaft sealing component are successively radially arranged in
Between the shell and the shaft；
Vacuum is constituted on the outside of the first rotating shaft seal assembly, the shell, the second rotating shaft sealing component and the shaft
Buffering cavity, the surface of shell are provided with the vacuum port being connected to the vacuum buffer cavity；
Fluid-tight is constituted on the outside of the second rotating shaft sealing component, the shell, the third rotating shaft sealing component and the shaft
Cavity, the surface of shell are provided with the liquid injection port being connected to the fluid-tight cavity；
The first rotating shaft seal assembly is provided with material cavity away from the side of the vacuum buffer cavity.
2. negative pressure gland seal device according to claim 1, which is characterized in that the surface of shell is provided with and the fluid-tight
First leakage fluid dram of cavity connection.
3. negative pressure gland seal device according to claim 2, which is characterized in that first leakage fluid dram is arranged in the shell
Bottom.
4. negative pressure gland seal device according to claim 1, which is characterized in that the surface of shell is provided with and the vacuum
Second leakage fluid dram of buffering cavity connection.
5. negative pressure gland seal device according to claim 4, which is characterized in that second leakage fluid dram is arranged in the shell
Bottom.
6. negative pressure gland seal device according to claim 1, which is characterized in that the first rotating shaft seal assembly is that oil sealing is close
Sealing assembly, packing seal component or mechanical sealing assembly.
7. negative pressure gland seal device according to claim 2, which is characterized in that the second rotating shaft sealing component is that oil sealing is close
Sealing assembly, packing seal component or mechanical sealing assembly.
8. negative pressure gland seal device according to claim 3, which is characterized in that the third rotating shaft sealing component is that oil sealing is close
Sealing assembly, packing seal component or mechanical sealing assembly.
9. negative pressure gland seal device according to claim 8, which is characterized in that the first rotating shaft seal assembly, described
Two rotating shaft sealing components and the third rotating shaft sealing component are oil sealing sealing component.
10. negative pressure gland seal device according to claim 1, which is characterized in that the section of the shell is selected from round, rectangle
Or ellipse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822204587.4U CN209293995U (en) | 2018-12-26 | 2018-12-26 | A kind of negative pressure gland seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822204587.4U CN209293995U (en) | 2018-12-26 | 2018-12-26 | A kind of negative pressure gland seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209293995U true CN209293995U (en) | 2019-08-23 |
Family
ID=67648756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822204587.4U Active CN209293995U (en) | 2018-12-26 | 2018-12-26 | A kind of negative pressure gland seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209293995U (en) |
-
2018
- 2018-12-26 CN CN201822204587.4U patent/CN209293995U/en active Active
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