CN203979407U - Mechanical seal structure - Google Patents
Mechanical seal structure Download PDFInfo
- Publication number
- CN203979407U CN203979407U CN201420410623.1U CN201420410623U CN203979407U CN 203979407 U CN203979407 U CN 203979407U CN 201420410623 U CN201420410623 U CN 201420410623U CN 203979407 U CN203979407 U CN 203979407U
- Authority
- CN
- China
- Prior art keywords
- ring
- stationary ring
- retainer
- annular groove
- mechanical seal
- 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.)
- Expired - Fee Related
Links
- 230000007704 transition Effects 0.000 claims abstract description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229920000459 Nitrile rubber Polymers 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 23
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 239000004809 Teflon Substances 0.000 description 3
- 229920006362 Teflon® Polymers 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 210000001138 tear Anatomy 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Mechanical Sealing (AREA)
Abstract
The utility model discloses a kind of mechanical seal structure, its technological scheme main points are, comprise the retainer of hollow, fixed cover is located at the rotating ring on retainer, rotating sleeve is located at the corrugated header on retainer and is fixed on the stationary ring on corrugated header, the surface of contact of stationary ring and rotating ring forms friction pair, between stationary ring and corrugated header, bellows is set, on retainer, depression is formed with annular groove, the corresponding stationary ring setting of opening of annular groove, annular groove has been embedded in ring plate, the internal diameter of ring plate is identical with the internal diameter of annular groove, the outer side wall of ring plate and stationary ring transition fit, ring plate is polyfluortetraethylene plate.The retainer of the utility model mechanical seal structure is difficult for vibration, rotating ring and stationary ring contact stabilization, the reliable and difficult seepage that occurs of sealing configuration.
Description
Technical field
The utility model relates to Sealing technical field, is specifically related to a kind of mechanical seal structure.
Background technique
Mechanical seal also claims end face seal, has a pair of end face perpendicular to spin axis, and under the effect of this end face elastic force outside hydrodynamic pressure and compensation machinery, the cooperation and the other end that rely on auxiliary seal keep laminating, and relative sliding, thereby prevent fluid leaks.Mechanical seal is made up of rotating ring, stationary ring, clamping element and seal element conventionally.Wherein, the end face of rotating ring and the stationary ring friction pair that partners, rotating ring is pressed on stationary ring end face its end face by the pressure of liquid in closed chamber, and on two ring end faces, produces suitable specific pressure and keep liquid film as thin as a wafer of one deck and reach the object of sealing.Clamping element produces pressure, can make pump also not keeping end face laminating under operating condition, prevents sealing medium seepage.Seal element plays the gap of gap, rotating ring and the housing of stationary seal ring and bearing, the vibration to water pump simultaneously, has impacted buffer function.The design of most of mechanical seal adopts softer material to make surface of revolution, makes its spin friction on harder stationary face, and the general combination of auto pump mechanical seal is to utilize material with carbon element as stationary ring, and it is moved on pottery or silicon carbide rotating ring.This pairing material have good running-in ability, thermal conductivity and mechanical strength and without excessive to advantages such as thermogalvanic corrisions.No matter adopt any material, all must between surface of contact, keep one deck fluid film, to play lubricated effect, the mode that adopts load on spring and fluid pressure to combine, can make to play between sealing surface good seal action.
But mechanical seal of the prior art, general rotating ring interlock is set in the rotating shaft of motor, the accuracy of its mounting structure requires very high, when electric machine rotation shakiness, or in the time of vibrational state, rotating shaft produces slight vibration, be easy to cause unstable contact the between rotating ring and stationary ring, not only easily cause wearing and tearing mutually between rotating ring and stationary ring, and easily produce seepage, affect the sealing effect of sealing configuration.
Model utility content
The deficiency existing for prior art, the utility model provides a kind of retainer to be difficult for vibration, rotating ring and stationary ring contact stabilization, sealing configuration is reliably difficult for occurring the mechanical seal structure of seepage.
For achieving the above object, the utility model provides following technological scheme: a kind of mechanical seal structure, comprise the retainer of hollow, fixed cover is located at the rotating ring on retainer, rotating sleeve is located at the corrugated header on retainer and is fixed on the stationary ring on corrugated header, the surface of contact of stationary ring and rotating ring forms friction pair, between stationary ring and corrugated header, bellows is set, on retainer, depression is formed with annular groove, the corresponding stationary ring setting of opening of annular groove, annular groove has been embedded in ring plate, the internal diameter of ring plate is identical with the internal diameter of annular groove, the outer side wall of ring plate and stationary ring transition fit, ring plate is polyfluortetraethylene plate.
By adopting technique scheme, retainer fixed cover is located in rotating shaft, and can rotate with rotating shaft interlock, corrugated header is fixed on the housing of equipment, and stationary ring is fixed on corrugated header and maintains static, in the time that rotating shaft drives retainer to rotate, be fixed between rotating ring on retainer and stationary ring and relatively rotate and form friction pair, realize motive sealing; And on retainer, being recessed to form annular groove, annular groove depression position can engage and is embedded in rotating shaft, avoids retainer and rotating shaft generation axially collect together and destroy the sealing surface between stationary ring and rotating ring, causes between stationary ring and rotating ring and weares and teares; Be embedded in teflon ring plate at annular groove, due to ring plate and stationary ring transition fit, can realize the secondary motive sealing between ring plate and stationary ring on the one hand, even if having a small amount of liquid driven torus and stationary ring place to leak out, secondary motive sealing can make up, on the other hand, in the time of rotating shaft generation high vibration, ring plate can play effective damping, buffering effect, the Relative Vibration between stable drive seat and stationary ring, avoid rotating ring and stationary ring that relative collision friction occurs and impaired, guarantee sealing reliability.
The utility model is further set to, and stationary ring is made up of graphite, and rotating ring is made up of aluminium oxide ceramics.
By adopting technique scheme, stationary ring is made up of graphite, and rotating ring is made up of aluminium oxide ceramics, has ensured running-in ability, thermal conductivity and mechanical strength between rotating ring and stationary ring, guarantee to keep one deck fluid film simultaneously between rotating ring and the surface of contact of stationary ring, further improve its sealability.
The utility model is further set to, and corresponding corrugated header one side of bellows is linkedly set with upper spring seat, and corresponding stationary ring one side of bellows is linkedly set with lower spring cup, between upper spring seat and lower spring cup, is provided with spring.
By adopting technique scheme, between upper spring seat and lower spring cup, spring is set, the elastic force of spring acts on respectively the two ends of bellows, one end is connected on corrugated header, the other end produces back pressure pressure to stationary ring, make to produce between stationary ring and rotating ring a contact, make to remain closely connected between stationary ring and rotating ring, guarantee to form one deck fluid film on the surface of contact between rotating ring and stationary ring, to play effect lubricated and sealing, effectively avoid wearing and tearing between rotating ring and stationary ring, prevent its surface of contact generation seepage simultaneously.
The utility model is further set to, and retainer, upper spring seat, lower spring cup, spring and corrugated header are made by stainless steel material.
By adopting technique scheme, retainer, upper spring seat, lower spring cup, spring and corrugated header are made by stainless steel material, avoid its in use corrosion, the working life of extension device.
The utility model is further set to, and bellows is made up of nitrile rubber.
By adopting technique scheme, bellows is made up of nitrile rubber, has good decay resistance and certain ductility, the sealing requirements while meeting its work and ductility requirement.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model mechanical seal structure;
Fig. 2 is the structural representation of the utility model mechanical seal structure and rotating shaft.
Reference character: 1, retainer; 11, annular groove; 2, corrugated header; 3, rotating ring; 4, stationary ring; 5, bellows; 6, ring plate; 7, spring; 71, upper spring seat; 72, lower spring cup; 8, rotating shaft.
Embodiment
Referring to figs. 1 through Fig. 2, the utility model mechanical seal structure embodiment is described further.
A kind of mechanical seal structure, comprise the retainer 1 of hollow, fixed cover is located at the rotating ring 3 on retainer 1, rotating sleeve is located at the corrugated header 2 on retainer 1 and is fixed on the stationary ring 4 on corrugated header 2, retainer 1 fixed cover is located in rotating shaft 8, and can rotate with rotating shaft 8 interlocks, corrugated header 2 is fixed on the housing of equipment, and stationary ring 4 is fixed on corrugated header 2 and maintains static, in the time that rotating shaft 8 drives retainer 1 to rotate, be fixed between rotating ring 3 on retainer 1 and stationary ring 4 and relatively rotate and form friction pair, realize motive sealing, further, between stationary ring 4 and corrugated header 2, bellows 5 is set, corresponding corrugated header 2 one sides of bellows 5 are linkedly set with upper spring seat 71, corresponding stationary ring 4 one sides of bellows 5 are linkedly set with lower spring cup 72, between upper spring seat 71 and lower spring cup 72, be provided with spring 7, spring 7 is elastic stretch state, the elastic force of spring 7 acts on respectively the two ends of bellows 5, one end is connected on corrugated header 2, the other end produces back pressure pressure to stationary ring 4, make to produce between stationary ring 4 and rotating ring 3 contact, make to remain closely connected between stationary ring 4 and rotating ring 3, guarantee to form one deck fluid film on the surface of contact between rotating ring 3 and stationary ring 4, to play effect lubricated and sealing, effectively avoid wearing and tearing between rotating ring 3 and stationary ring 4, prevent its surface of contact generation seepage simultaneously, and on retainer 1, be recessed to form annular groove 11, the corresponding stationary ring 4 of opening of annular groove 11 arranges, annular groove 11 position of caving in can engage and is embedded in rotating shaft 8, avoids retainer 1 and rotating shaft 8 to occur axially to collect together and destroys the sealing surface between stationary ring 4 and rotating ring 3, causes between stationary ring 4 and rotating ring 3 and weares and teares, be embedded in teflon ring plate 6 at annular groove 11, preferably, the internal diameter of ring plate 6 is identical with the internal diameter of annular groove 11, the outer side wall of ring plate 6 and stationary ring 4 transition fit, teflon is as a kind of sealing member material of excellent performance, there is good decay resistance and elastic recovery, the coefficient of sliding friction of itself and cemented carbide only 0.03, can realize the secondary motive sealing between ring plate 6 and stationary ring 4 on the one hand, even if having a small amount of liquid driven torus 3 and stationary ring 4 places to leak out, secondary motive sealing can make up, on the other hand, in the time there is high vibration in rotating shaft 8, ring plate 6 can play effective damping, buffering effect, Relative Vibration between stable drive seat 1 and stationary ring 4, avoid rotating ring 3 and stationary ring 4 that relative collision friction occurs and impaired, guarantee sealing reliability.
Preferably, stationary ring 4 is made up of graphite, and rotating ring 3 is made up of aluminium oxide ceramics, has ensured running-in ability, thermal conductivity and mechanical strength between rotating ring 3 and stationary ring 4, guarantee to keep one deck fluid film simultaneously between rotating ring 3 and the surface of contact of stationary ring 4, further improve its sealability; Retainer 1, upper spring seat 71, lower spring cup 72, spring 7 and corrugated header 2 are made by stainless steel material, avoid its in use corrosion, the working life of extension device; Bellows 5 is made up of nitrile rubber, has good decay resistance and certain ductility, the sealing requirements while meeting its work and ductility requirement.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment, and all technological schemes belonging under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. a mechanical seal structure, comprise the retainer of hollow, fixed cover is located at the rotating ring on retainer, rotating sleeve is located at the corrugated header on retainer and is fixed on the stationary ring on corrugated header, the surface of contact of described stationary ring and rotating ring forms friction pair, between described stationary ring and corrugated header, bellows is set, it is characterized in that: on described retainer, depression is formed with annular groove, the corresponding stationary ring setting of opening of annular groove, described annular groove has been embedded in ring plate, the internal diameter of ring plate is identical with the internal diameter of annular groove, the outer side wall of ring plate and stationary ring transition fit, described ring plate is polyfluortetraethylene plate.
2. mechanical seal structure according to claim 1, is characterized in that: described stationary ring is made up of graphite, and described rotating ring is made up of aluminium oxide ceramics.
3. mechanical seal structure according to claim 1 and 2, it is characterized in that: corresponding corrugated header one side of described bellows is linkedly set with upper spring seat, corresponding stationary ring one side of described bellows is linkedly set with lower spring cup, between described upper spring seat and lower spring cup, is provided with spring.
4. mechanical seal structure according to claim 3, is characterized in that: described retainer, upper spring seat, lower spring cup, spring and corrugated header are made by stainless steel material.
5. mechanical seal structure according to claim 4, is characterized in that: described bellows is made up of nitrile rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420410623.1U CN203979407U (en) | 2014-07-23 | 2014-07-23 | Mechanical seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420410623.1U CN203979407U (en) | 2014-07-23 | 2014-07-23 | Mechanical seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203979407U true CN203979407U (en) | 2014-12-03 |
Family
ID=51976853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420410623.1U Expired - Fee Related CN203979407U (en) | 2014-07-23 | 2014-07-23 | Mechanical seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203979407U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595492A (en) * | 2015-01-17 | 2015-05-06 | 宁波九乐厨房电器科技有限公司 | Sealing structure for food debris processing machine |
-
2014
- 2014-07-23 CN CN201420410623.1U patent/CN203979407U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595492A (en) * | 2015-01-17 | 2015-05-06 | 宁波九乐厨房电器科技有限公司 | Sealing structure for food debris processing machine |
| CN104595492B (en) * | 2015-01-17 | 2016-12-07 | 宁波九乐厨房电器科技有限公司 | A kind of sealing structure of food waste disposer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20160723 |