CN105299231B - Vacuum rotation sealing device - Google Patents
Vacuum rotation sealing device Download PDFInfo
- Publication number
- CN105299231B CN105299231B CN201510755702.5A CN201510755702A CN105299231B CN 105299231 B CN105299231 B CN 105299231B CN 201510755702 A CN201510755702 A CN 201510755702A CN 105299231 B CN105299231 B CN 105299231B
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- China
- Prior art keywords
- vacuum
- rotary shaft
- sealing device
- vacuum chamber
- gland
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Abstract
The invention provides a vacuum rotation sealing device which comprises a rotary shaft, bearings, glands, a vacuum cavity, a vacuum suction nozzle, a clamping device, sealing pressing sleeves, sealing rings and auxiliary pieces. Air holes are formed in the portion, located in the vacuum cavity, of the rotary shaft. One end of the rotary shaft is connected with the clamping device. The vacuum suction nozzle is arranged on one side of the vacuum cavity. The rotary shaft is connected with the glands through the bearings and the glands are connected with the vacuum cavity. The sealing pressing sleeves and the sealing rings are arranged between the glands and the vacuum cavity. The vacuum rotation sealing device is easy to operate and control and a polyvinyl alcohol coating on a large-size polystyrene microsphere surface can be prepared.
Description
Technical field
The present invention relates to tiny balloon preparing technical field, and in particular to a kind of vacuum rotary sealing device.
Background technology
With the development of China's superpower laser, for laser inertial confinement fusion Physical Experiment multiple layer polymer target
The diametric requirements of ball are also increasing, therefore the research of large scale double-layer hollow microsphere preparation technology seems of crucial importance.In order to
Solve large scale plastic microsphere surface carry out PVA coatings this difficult problems, American Studies person D. Steinman etc. propose it is another
Feasible method --- dip coating.The preparation process kind is adsorbed the PS monolayers ball that is dried to be coated in capillary using vacuum fixture
Guan Shang, is then immersed in the microsphere in certain density PVA solution, proposes that 180 ° of inversions are overturn after ball (hangs on microsphere
PVA drops will flow in the middle of equatorial region), under thermal source be dried, solidification.With capillary attraction in the another of microsphere after to be dried
End, carries out same dipping, drying, cured, aforesaid operations is repeated required PS-PVA double-layer balls are obtained.
Although PVA can be coated in large scale plastic microsphere surface by dip coating, PVA coatings are relatively thin, uniformity and table
Surface roughness is poor, and the time for storing deuterium is shorter, therefore limits its development.Additionally, easily in upper once coating in preparation process
The vacuum stopper marking is left on spherical shell after upset, also easily occurs rough residue at microsphere edges at two ends.
The content of the invention
PVA coatings are relatively thin in order to solve prior art, and uniformity and surface roughness are poor, and the time for storing deuterium is short, apply
There is the vacuum stopper marking and a kind of unsmooth, vacuum rotary sealing device of present invention offer, the present invention in layer spherical shell
Suitable for more than 1000 μm large scale polystyrene（PS）The polyvinyl alcohol on plastic microsphere surface（PVA）It is prepared by coating.
The vacuum rotary sealing device of the present invention, is characterized in：Described device includes rotary shaft, bearing, gland, vacuum
Chamber, vacuum pumping mouth, clamper, sealed pressing sleeve, sealing ring and auxiliary member, are provided with the rotating shaft rod in vacuum chamber
Pore；One end of rotary shaft is connected with clamper；The side of vacuum chamber is provided with vacuum pumping mouth；By the way that bearing is by rotary shaft and presses
Lid is connected, and gland is connected with vacuum chamber；Sealed pressing sleeve, sealing ring are provided between gland and vacuum chamber.
Described pore is multiple, and is uniformly and symmetrically distributed.
The rotary shaft is hollow structure.
Described vacuum pumping mouth is using the concavo-convex interphase structure for being easy to seal.
The vacuum rotary sealing device of the present invention has the following advantages：Simple to operation, condition is gentle, it is easy to control
System, using the present invention the more uniform PVA coatings of large scale PS microsphere surface are obtained in that.The present disclosure additionally applies for outer boundary is mixed
The preparation of miscellaneous coating and multi-functional yin and yang sphere.
Description of the drawings
Fig. 1 is the profile of vacuum rotary sealing device of the present invention；
Fig. 2 is the top view of vacuum rotary sealing device of the present invention；
In figure, the 1. vacuum pumping mouth of 2. bearing of rotary shaft, 3. gland, 4. screw, 5. vacuum chamber 6.
7. the pore of 8. sealing ring of sealed pressing sleeve, 9. clamper 10..
Specific embodiment
Figures 1 and 2 show that the structure of vacuum rotary sealing device of the present invention.The vacuum rotary sealing device bag of the present invention
Include rotary shaft 1, bearing 2, gland 3, vacuum chamber 5, vacuum pumping mouth 6, sealed pressing sleeve 7, sealing ring 8, clamper 9 and auxiliary member.
The position being located in vacuum chamber 5 on the bar of rotary shaft 1 of hollow structure has been uniformly and symmetrically distributed 16 circular pores 10.Rotate
One end of axle 1 is connected with clamper 9, whether realizes the absorption clamping to large scale PS monolayer ball by evacuation or puts down.Pressure
Lid 3 is cylinder, and it is as shown in Figure 2 that the edge of gland 3 is provided with four groups of symmetrical interior hexagonal stigma screw holes.Vacuum pumping mouth 6 is fixed on
The side of circular tube shaped vacuum chamber 5.Its annexation is that rotary shaft 1 is connected with gland 3 by bearing 3, gland 3 be provided with true
The vacuum chamber 5 of empty pumping mouth 6 is connected by interior hexagonal chapiter screw 4.Vacuum chamber 5 is with sealed pressing sleeve 7, sealing ring 8 by pressure
Lid 3 compresses sealed pressing sleeve 7 and sealing ring 8 reaches sealing effectiveness.
Vacuum pumping mouth 6 in vacuum rotary sealing device of the present invention is using the concavo-convex interphase structure for being easy to seal.Interior hexagonal
The external diameter of chapiter screw 4 must match with the opening inside diameter of gland 3 and vacuum chamber 5.
Large scale PS microsphere surface is carried out in spin-coating method in more uniform PVA coating procedures, vacuum chamber 5 being fixed
Afterwards, rotary shaft 1 is rotated flexibly, without screens phenomenon, and requires the deflection that clamper 9 is visible by naked eyes.Clamper 9 and rotation
Axle 1 is tightly connected.By carrying out PVA coatings to large scale PS microsphere surface using the device, can obtain PVA coatings it is more uniform,
The less PS-PVA double-layer balls of surface defect.
Claims (4)
1. a kind of vacuum rotary sealing device, it is characterised in that：Described device includes rotary shaft（1）, bearing（2）, gland
（3）, vacuum chamber（5）, vacuum pumping mouth（6）, clamper（9）, sealed pressing sleeve（7）, sealing ring（8）And auxiliary member, positioned at vacuum
Chamber（5）Interior rotary shaft（1）Pore is provided with bar（10）；Rotary shaft（1）One end and clamper（9）It is connected；Vacuum chamber
Room（5）Side be provided with vacuum pumping mouth（6）；By bearing（2）By rotary shaft（1）With gland（3）It is connected, gland（3）With vacuum
Chamber（5）It is connected；Gland（3）With vacuum chamber（5）Between be provided with sealed pressing sleeve（7）And sealing ring（8).
2. vacuum rotary sealing device according to claim 1, it is characterised in that：Described pore（10）For multiple, and
It is uniformly and symmetrically distributed.
3. vacuum rotary sealing device according to claim 1, it is characterised in that：The rotary shaft（1）For hollow structure.
4. vacuum rotary sealing device according to claim 1, it is characterised in that：Described vacuum pumping mouth（6）Using easy
In the concavo-convex interphase structure of sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510755702.5A CN105299231B (en) | 2015-11-10 | 2015-11-10 | Vacuum rotation sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510755702.5A CN105299231B (en) | 2015-11-10 | 2015-11-10 | Vacuum rotation sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105299231A CN105299231A (en) | 2016-02-03 |
| CN105299231B true CN105299231B (en) | 2017-04-12 |
Family
ID=55196839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510755702.5A Expired - Fee Related CN105299231B (en) | 2015-11-10 | 2015-11-10 | Vacuum rotation sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105299231B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114622868B (en) * | 2020-12-10 | 2023-09-08 | 中国科学院沈阳自动化研究所 | Underwater sealing joint |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL84691A0 (en) * | 1986-12-03 | 1988-05-31 | Sealing Devices Pty Ltd | Improved rotary seal |
| JPH0726624B2 (en) * | 1989-08-10 | 1995-03-29 | 三菱電機株式会社 | Oil rotary vacuum pump shaft seal device |
| CN2895904Y (en) * | 2006-03-14 | 2007-05-02 | 台州市星光真空设备制造有限公司 | Leakage-proof type vacuum motive seal |
| CN101994836A (en) * | 2010-09-10 | 2011-03-30 | 佛山市钜仕泰粉末冶金有限公司 | Sealing device of vacuum moving element |
| WO2013096115A1 (en) * | 2011-12-19 | 2013-06-27 | Aktiebolaget Skf | Pressure resistant static and dynamic seal assembly and method |
| CN205136602U (en) * | 2015-11-10 | 2016-04-06 | 中国工程物理研究院激光聚变研究中心 | Sealing device is rotated in vacuum |
-
2015
- 2015-11-10 CN CN201510755702.5A patent/CN105299231B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN105299231A (en) | 2016-02-03 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170412 Termination date: 20191110 |
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| CF01 | Termination of patent right due to non-payment of annual fee |