CN105840836A - Mechanical seal device - Google Patents
Mechanical seal device Download PDFInfo
- Publication number
- CN105840836A CN105840836A CN201610318021.7A CN201610318021A CN105840836A CN 105840836 A CN105840836 A CN 105840836A CN 201610318021 A CN201610318021 A CN 201610318021A CN 105840836 A CN105840836 A CN 105840836A
- Authority
- CN
- China
- Prior art keywords
- ring
- type groove
- rotating shaft
- liquid
- stationary ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/38—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member sealed by a packing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/42—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by centrifugal force
Abstract
The invention provides a mechanical seal device. The mechanical seal device comprises a shell, a rotating shaft and a bearing; the rotating shaft is mounted on the shell through the bearing, a movable ring is fixed to the outer end of the rotating shaft, and the movable ring is located in a ring cavity between the rotating shaft and the shell; the movable ring is of a U-shaped groove structure with an opening facing the interior of the shell, the outer peripheral edge of the movable ring is not in contact with the shell, and the static ring is of a U-shaped groove structure with an opening facing the exterior portion of the shell; and the internal peripheral edge of the static ring is not in contact with the rotating shaft. Kinetic energy of liquid is used for blocking liquid leakage; liquid obtains energy in the rotatable movable ring, and leaves the movable ring at the high speed, and a liquid curtain wall for isolating the interior and the exterior is formed in front of a leakage gap and stops liquid leakage; due to the fact that the device is not in contact with a static object, the device cannot be worn and does not need to be replaced; the flow of needed liquid is small, and therefore consumed energy is not much; and after the static ring is additionally arranged, energy needed by liquid flowing in the annular sealed cavity is maintained to be equal to energy needed by the device.
Description
[technical field]
The present invention relates to mechanical seal field, be specially a kind of mechanically-sealing apparatus.
[background technology]
The most conventional mechanical seal is by rotating ring, stationary ring, spring and auxiliary sealing member 0 type circle
Deng composition, rotating ring is fixed in rotating shaft, rotates with axle, and stationary ring is fixed on housing, by
Built-in spring is pressed in the plane of rotating ring.No matter 2 of machinery start-stop, rotating ring and stationary ring are put down
Face sticks together all the time, separates interior or exterior space, plays the effect stoping liquid leakage.This close
Seal apparatus is effective, but sealing surface is easy to wear, it is necessary to change after work a period of time.
Flexible axle envelope is made by flexible material (rubber etc.) and skeleton, uses spring handle sealing lip
Being pressed on axle, internal pressure also functions to the effect that sealing lip is pressed on axle, thus plays prevention
The effect of liquid leakage.This sealing device seal pressure is relatively low, after work a period of time, just
Change.
Packing box seal is to fill filler in stuffing-box chamber, and after compression, filler is close on axle,
Separate interior or exterior space, stop liquid leakage.This sealing device is only used for low speed occasion, and
It is easily damaged.
Above-mentioned sealing device is all contact seal, and validity period is short, needs often to change.Therefore,
It is necessary to improve.
[summary of the invention]
It is an object of the invention to provide a kind of good seal performance, stablize durable mechanical seal dress
Put.
Technical scheme is as follows:
A kind of mechanically-sealing apparatus, including housing, rotating shaft, bearing, bearing is passed through in described rotating shaft
It is arranged on housing, it is characterised in that: the outer end of described rotating shaft is fixed with rotating ring, and rotating ring
In ring cavity between rotating shaft and housing；Described rotating ring is that opening is towards described enclosure interior
U-type groove structure, described rotating ring outer peripheral edge does not contacts with described housing；In described ring cavity, symmetry sets
Having stationary ring, the outer peripheral edge of described stationary ring is fixing with described housing to be connected, and described stationary ring is opening court
To the U-type groove structure of described hull outside, described stationary ring inner peripheral does not contacts with described rotating shaft；
Described stationary ring and described rotating ring enclose formation annular seal space, and described rotating ring is with described stationary ring not
Contact.
Preferably, uniform first helicla flute on the inwall of described rotating ring U-type groove, described stationary ring U
Uniform second helicla flute on the inwall of type groove, and the first helicla flute and the second helicla flute the most right
Claim.
Preferably, uniform first spiral salient, described stationary ring on the inwall of described rotating ring U-type groove
Uniform second spiral salient on the inwall of U-type groove；And first spiral salient and the second spiral salient
Symmetrically.
Preferably, the spiral salient of described rotating ring U-type groove inwall is fixed with the first U-shaped lid,
It is fixed with the second U-shaped lid on the spiral salient of the inwall of described stationary ring U-type groove, and first is U-shaped
Cover symmetrical with the second U-shaped lid.
The mechanically-sealing apparatus that the present invention provides by installing rotating ring, the liquid of leakage in rotating shaft outer end
In the U-type groove of body entrance rotating ring, also phantom ring high-speed rotary transfers to obtain energy flow at high speed, U-shaped
When the liquid of groove high speed flowing departs from rotating ring, its axial flow direction and liquid leakage direction phase
Instead, after encountering the liquid of leakage, swiftly flowing liquid retarding pressure rises, thus prevents
The leakage of liquid；Owing to rotating ring does not contacts with stationary object, thus there is not abrasion, the most easily
Damage part；Liquid velocity for sealing is higher, but its amount is little, thus the energy consumed is few；
And after installing stationary ring additional, maintain this partially liq energy needed for the flowing of ring packing intracavity
The energy that amount needs equal to this device.
[accompanying drawing explanation]
Fig. 1 is the cross-sectional view of the embodiment of the present invention one, two, three, four；
Fig. 2 is the profile of the embodiment of the present invention one rotating ring；
Fig. 3 is the profile of the embodiment of the present invention one stationary ring；
Fig. 4 is the profile of the embodiment of the present invention two rotating ring；
Fig. 5 is the profile of the embodiment of the present invention two stationary ring；
Fig. 6 is the profile of the embodiment of the present invention three rotating ring；
Fig. 7 is the profile of the embodiment of the present invention three stationary ring；
Fig. 8 is the profile of the embodiment of the present invention four rotating ring；
Fig. 9 is the profile of the embodiment of the present invention four stationary ring；
[detailed description of the invention]
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Embodiment one:
Referring to Fig. 1 to Fig. 3, described mechanically-sealing apparatus includes housing 1, rotating shaft 2, axle
Holding 3, described rotating shaft 2 is arranged on housing 1 by bearing 3.
The outer end of described rotating shaft 2 is fixed with rotating ring 4, and rotating ring 4 is positioned at rotating shaft 2 and housing
In ring cavity 6 between 1；Described rotating ring 4 is that opening is towards the U-type groove within described housing 1
Structure, described rotating ring 4 outer peripheral edge does not contacts with described housing 1 and forms a seam with described housing
Gap 61；Described ring cavity 6 is arranged with stationary ring 5, the outer peripheral edge of described stationary ring 5 and described shell
Body 1 is fixing to be connected, described stationary ring 5 be opening towards the U-type groove structure outside described housing 1,
Described stationary ring 5 inner peripheral does not contacts with described rotating shaft 2；Described stationary ring 5 encloses with described rotating ring 4
Close formed annular seal space 7, and described rotating ring 4 does not contacts with described stationary ring 5 and with described shell
Body forms a gap 62.
During work, the liquid of starting leakage enters axially into annular seal space 7 zone of action,
Under frictional force effect, phantom ring 4 rotates, and departs from after rotating ring throws away and is formed before gap leakage 61
Curtain wall, barrier liquid leaks out；Come to reenter rotating ring 4 in the revolution of stationary ring 5 surface to make
With region, enter circulation next time；After having installed stationary ring 5 additional, due to the liquid base for sealing
This does not contacts with the liquid beyond annular seal space 7, and the kinetic energy of this partially liq and pressure can obtain
Preserving with part, the energy that this device is consumed is for maintaining this partially liq in ring packing
Flowing in chamber 7.
Embodiment two:
Referring to Fig. 1, Fig. 4 and Fig. 5, described stationary ring 5 encloses formation ring with described rotating ring 4
Shape annular seal space 7, the inwall of the U-type groove of described rotating ring 4 has the first helicla flute 41, described quiet
Uniform second helicla flute 51 on the inwall of the U-type groove of ring 5, and the first helicla flute 41 and second
Helicla flute 51 is uniformly distributed and symmetrically, described helicla flute 41 rotarily drives with described rotating ring
Liquid throws away along described U-type groove near the side of described housing；After throwing away before gap leakage shape
Becoming curtain wall, barrier liquid leaks out；On stationary ring surface, revolution comes to reenter rotating ring region,
Enter circulation next time.After having installed stationary ring 5 additional, due to for seal liquid the most not with ring
Liquid contact beyond shape annular seal space 7, the kinetic energy of this partially liq and pressure can be able to part to be protected
Depositing, the energy that this device is consumed is for maintaining this partially liq in annular seal space 7
Flowing.Inner wall even distribution first helicla flute 41 of the U-type groove of described rotating ring 4 accelerates sealing fluid
The speed that body throws away, on the inwall of the U-type groove of described stationary ring 5, uniform second helicla flute 51 carries
The high speed sealing liquid revolution, the two coordinates the sealing property making this device more preferable.
Embodiment three:
Referring to Fig. 1, Fig. 6 and Fig. 7, described stationary ring 5 encloses formation ring with described rotating ring 4
Shape annular seal space 7, the inwall of the U-type groove of described rotating ring 4 has the first spiral salient 42, described
Uniform second spiral salient 52 on the inwall of the U-type groove of stationary ring 5, and the first spiral salient 42
It is uniformly distributed with the second spiral salient 52 and symmetrically, described first spiral salient 42 is with institute
State rotating ring to rotarily drive liquid and throw away near the side of described housing along described U-type groove；After throwing away
Forming curtain wall before gap leakage 61, barrier liquid leaks out；Turned round on stationary ring surface
Reenter rotating ring region, enter circulation next time.After having installed stationary ring 5 additional, owing to being used for
The liquid sealed does not contacts with the liquid beyond annular seal space 7, moving of this partially liq
Can be able to part with pressure preserve, the energy that this device is consumed is for maintaining this part liquid
Body flowing in annular seal space 7.Inner wall even distribution first spiral shell of the U-type groove of described rotating ring 4
Rotation protruding 42 accelerates and seals the speed that liquid throws away, the inwall of the U-type groove of described stationary ring 5
Upper uniform second spiral salient 52 improves the speed sealing liquid revolution, and the two cooperation makes this
The sealing property of device is more preferable.
Embodiment four:
Referring to Fig. 1, Fig. 8 and Fig. 9, described stationary ring 5 encloses formation ring with described rotating ring 4
Shape annular seal space 7, the inwall of the U-type groove of described rotating ring 4 is formed with some first spiral salients 42,
Some described first spiral salients 42 are uniformly distributed, and described rotating ring 4 includes the first U-shaped lid 43,
Described first U-shaped lid 43 is fixedly arranged on described first spiral salient 42 and is positioned at U-type groove,
And formed some between described U-type groove, first spiral salient the 42, first U-shaped lid 43 three
First spiral channel 44；The inwall of the U-type groove of described stationary ring 5 is formed with some second spirals
Protruding 52, some described second spiral salients 52 are uniformly distributed, and described stationary ring 5 includes second
U-shaped lid 53, described second U-shaped lid 53 is fixedly arranged on described second spiral salient 52 also
It is positioned at U-type groove, and described U-type groove, second spiral salient the 52, second U-shaped lid 53 3
Some second spiral channels 54 are formed between person.
Described first spiral channel 44 rotarily drives liquid with described rotating ring and leans on along described U-type groove
Nearly described housing 1 side throws away, and forms curtain wall, stop liquid after throwing away before gap leakage 61
Body leaks out；Come to reenter rotating ring district by the second spiral channel 54 revolution the most again
Territory, enters circulation next time.After having installed stationary ring 5 additional, due to the liquid for sealing the most not
Contacting with the liquid beyond annular seal space 7, the kinetic energy of this partially liq and pressure can be able to portion
Code insurance is deposited, and the energy that this device is consumed is for maintaining this partially liq at annular seal space 7
Interior flowing.Described first spiral channel 44 accelerates and seals the speed that liquid throws away, described
Second spiral channel 54 improves the speed sealing liquid revolution, and the two cooperation makes this device
Sealing property is more preferable.
The present invention utilizes the kinetic energy of liquid to stop fluid leakage.Liquid obtains in the rotating ring rotated
Obtain energy, leave rotating ring at a high speed, be previously formed one liquid curtain inside and outside isolation at gap leakage
Wall, stops liquid leakage.Owing to not contacting with stationary object, because of without wearing and tearing, it is not necessary to more
Change；Required fluid flow is little, therefore consumed energy is few.
Above-described is only embodiments of the present invention, it should be noted here that for ability
For the those of ordinary skill in territory, without departing from the concept of the premise of the invention, it is also possible to
Make improvement, but these belong to protection scope of the present invention.
Claims (4)
1. a mechanically-sealing apparatus, including housing, rotating shaft, bearing, described rotating shaft is passed through
Bearing is arranged on housing, it is characterised in that: the outer end of described rotating shaft is fixed with rotating ring, and
In rotating ring ring cavity between rotating shaft and housing；Described rotating ring is opening towards in described housing
The U-type groove structure in portion, described rotating ring outer peripheral edge does not contacts with described housing；In described ring cavity right
Claiming to be provided with stationary ring, the outer peripheral edge of described stationary ring is fixing with described housing to be connected, and described stationary ring is for opening
Mouth is towards the U-type groove structure of described hull outside, and described stationary ring inner peripheral does not connects with described rotating shaft
Touch；Described stationary ring and described rotating ring enclose formation annular seal space, and described rotating ring is quiet with described
Ring does not contacts.
Mechanically-sealing apparatus the most according to claim 1, it is characterised in that: described dynamic
Uniform first helicla flute on the inwall of ring U-type groove, on the inwall of described stationary ring U-type groove uniform
Two helicla flutes, and the first helicla flute and the second helicla flute symmetrical.
Mechanically-sealing apparatus the most according to claim 1, it is characterised in that: described dynamic
Uniform first spiral salient on the inwall of ring U-type groove, uniform on the inwall of described stationary ring U-type groove
Second spiral salient；And first spiral salient and the second spiral salient symmetrical.
Mechanically-sealing apparatus the most according to claim 3, it is characterised in that: described dynamic
The first U-shaped lid it is fixed with, described stationary ring U-type groove interior on the spiral salient of ring U-type groove inwall
Be fixed with the second U-shaped lid on the spiral salient of wall, and the first U-shaped lid and the second U-shaped lid mutual
Symmetrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610318021.7A CN105840836A (en) | 2016-05-13 | 2016-05-13 | Mechanical seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610318021.7A CN105840836A (en) | 2016-05-13 | 2016-05-13 | Mechanical seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105840836A true CN105840836A (en) | 2016-08-10 |
Family
ID=56592138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610318021.7A Pending CN105840836A (en) | 2016-05-13 | 2016-05-13 | Mechanical seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105840836A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1209388A2 (en) * | 2000-11-21 | 2002-05-29 | Eagle Industry Co., Ltd. | Mechanical seal |
| CN1828098A (en) * | 2006-01-27 | 2006-09-06 | 浙江工业大学 | Non-contact mechanical end face sealing structure |
| US20070228664A1 (en) * | 2006-03-31 | 2007-10-04 | Krishnamurthy Anand | Mechanical seals and methods of making |
| CN201306445Y (en) * | 2008-10-16 | 2009-09-09 | 东营海森密封技术有限责任公司 | Liquid film lubrication double end surface non-contact mechanical seal device |
| CN103062412A (en) * | 2012-12-24 | 2013-04-24 | 浙江工业大学 | Micro-bulge double-layer composite groove deep end surface mechanical seal structure |
| CN202971297U (en) * | 2012-07-10 | 2013-06-05 | 中国铝业股份有限公司 | Sealing device of centrifugal pump |
| JP2014178015A (en) * | 2013-03-15 | 2014-09-25 | Eagle Burgmann Japan Co Ltd | Tight seal structure |
| CN104455456A (en) * | 2014-11-05 | 2015-03-25 | 中国航空动力机械研究所 | Fluid power sealing device |
| CN105202190A (en) * | 2015-10-10 | 2015-12-30 | 霍凤伟 | Shallow slot mechanical seal |
| CN105422865A (en) * | 2016-01-12 | 2016-03-23 | 中国航空动力机械研究所 | Hydrodynamic sealing structure |
| CN105465371A (en) * | 2015-12-30 | 2016-04-06 | 南京林业大学 | Bidirectional-rotation self-pumping fluid dynamic pressure type mechanical seal |
-
2016
- 2016-05-13 CN CN201610318021.7A patent/CN105840836A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1209388A2 (en) * | 2000-11-21 | 2002-05-29 | Eagle Industry Co., Ltd. | Mechanical seal |
| CN1828098A (en) * | 2006-01-27 | 2006-09-06 | 浙江工业大学 | Non-contact mechanical end face sealing structure |
| US20070228664A1 (en) * | 2006-03-31 | 2007-10-04 | Krishnamurthy Anand | Mechanical seals and methods of making |
| CN201306445Y (en) * | 2008-10-16 | 2009-09-09 | 东营海森密封技术有限责任公司 | Liquid film lubrication double end surface non-contact mechanical seal device |
| CN202971297U (en) * | 2012-07-10 | 2013-06-05 | 中国铝业股份有限公司 | Sealing device of centrifugal pump |
| CN103062412A (en) * | 2012-12-24 | 2013-04-24 | 浙江工业大学 | Micro-bulge double-layer composite groove deep end surface mechanical seal structure |
| JP2014178015A (en) * | 2013-03-15 | 2014-09-25 | Eagle Burgmann Japan Co Ltd | Tight seal structure |
| CN104455456A (en) * | 2014-11-05 | 2015-03-25 | 中国航空动力机械研究所 | Fluid power sealing device |
| CN105202190A (en) * | 2015-10-10 | 2015-12-30 | 霍凤伟 | Shallow slot mechanical seal |
| CN105465371A (en) * | 2015-12-30 | 2016-04-06 | 南京林业大学 | Bidirectional-rotation self-pumping fluid dynamic pressure type mechanical seal |
| CN105422865A (en) * | 2016-01-12 | 2016-03-23 | 中国航空动力机械研究所 | Hydrodynamic sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160810 |