CN206626181U - The safe mechanically-sealing apparatus of rotating - Google Patents
The safe mechanically-sealing apparatus of rotating Download PDFInfo
- Publication number
- CN206626181U CN206626181U CN201720296840.6U CN201720296840U CN206626181U CN 206626181 U CN206626181 U CN 206626181U CN 201720296840 U CN201720296840 U CN 201720296840U CN 206626181 U CN206626181 U CN 206626181U
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- Prior art keywords
- rotating
- fixed
- ring
- axle sleeve
- locking nut
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Abstract
The utility model discloses a kind of safe mechanically-sealing apparatus of rotating, including the axle sleeve being set in rotating shaft, the sealing gland and seal assembly being set on axle sleeve, sealing gland is fixed on pump case, the seal assembly includes rotating ring, stationary ring, stationary seat, the stationary seat is fixed in sealing gland, stationary ring is fixed on stationary seat, the rotating ring is fixed on axle sleeve by screw, locking nut is provided with the outside of rotating ring, locking nut is fixed on axle sleeve, locking nut is connected with rotating limiter, the rotating limiter is fixed on axle sleeve, rotating limiter is provided with plug structure.It is connected by the locking nut of rotating limiter and rotating ring, fixed effect can be played, also can prevent locking nut from loosening when motor reversal, improve the reliability of mechanical seal.
Description
Technical field
The utility model belongs to technical field of mechanical, the safe mechanical seal dress of more particularly to a kind of rotating
Put.
Background technology
Mechanically-sealing apparatus of the prior art generally comprises rotating ring, stationary ring, stationary seat and auxiliary seal component, rotating ring and led to
Cross screw to be fixed in rotating shaft, in order to fix rotating ring, screwed by locking nut and blocked in rotating shaft, by rotating ring, motor is normal
During operation, mechanical seal fixation, reliability height.Exactly because also this structure, in motor reversal, locking nut can go out
Now loosen, influence security and sealing property.Therefore, design a mechanism sealing device, makes it remain to pacify in motor reversal
Entirely, stably, reliable operation be urgent need to resolve technical barrier.
The content of the invention
In view of the deficienciess of the prior art, the utility model provides a kind of rotating safe mechanical seal dress
Put.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：The safe machinery of rotating
Sealing device, including axle sleeve, the sealing gland and seal assembly that are set on axle sleeve being set in rotating shaft, sealing gland are fixed
In on pump case, the seal assembly includes rotating ring, stationary ring, stationary seat, and the stationary seat is fixed in sealing gland, and stationary ring is fixed
In on stationary seat, the rotating ring is fixed on axle sleeve by screw, is provided with locking nut on the outside of rotating ring, locking nut is fixed on axle
Put, block rotating ring, locking nut is connected with rotating limiter, and the rotating limiter is fixed on axle sleeve, rotating
Limiter is provided with plug structure.
Further, the locking nut is provided with spacing with the rotating of the plug respective outer side edges of rotating limiter
Groove, plug structure insertion rotating stopper slot in block fixation, fixed effect can be played, also can motor reversal when
Wait, prevent locking nut from loosening, improve the reliability of mechanical seal.
Further, the plug structure is two or more.
Further, the rotating limiter is to have reeded labyrinth structure, Jie to be sealed with pump case junction
When matter passes through labyrinth structure, pressure is gradually reduced, and the quantity of groove is 2-5, and channel section is shaped as trapezoidal, and slot bottom width is
2mm, groove top width are 3.2mm, groove depth 2mm.
Further, spring and seal O-ring are provided between the stationary seat and sealing gland, seal O-ring is by spring
It is enclosed between sealing gland and stationary seat, sealing gland with stationary seat in relative motion on axle sleeve, roll by seal O-ring
Dynamic friction.
Further, guiding limitator is set on the sealing gland, is provided with what is coordinated with guiding limitator on stationary seat
Guide and limit groove, guiding limitator alignment guide stopper slot insertion during installation, fixed stationary seat.
Further, the sealing gland is provided with steam vent, and bleed screw is set on steam vent, and steam vent is pressed through sealing
The sealed chamber of lid connection rotating ring and stationary ring.
Further, stuffing box is set between the sealing gland and axle sleeve, is filler in stuffing box, stuffing box is provided with can
To compress the gland of filler, gland is bolted on sealing gland by filler depression bar.
Compared with prior art, the utility model advantage is：
It is connected by the locking nut of rotating limiter and rotating ring, fixed effect can be played, also can be in electricity
When machine inverts, prevent locking nut from loosening, improve the reliability of mechanical seal.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of rotating limiter of the present utility model；
Fig. 3 is the sectional view of the rotating limiter provided with labyrinth structure；
Fig. 4 is the structural representation of the sealing gland provided with guiding limitator and steam vent；
Fig. 5 is Fig. 4 sectional view.
In figure, 1. axle sleeves；2. sealing gland；3. pump case；4. rotating limiter；5. rotating ring；6. stationary ring；7. stationary seat；
8. locking nut；9. stuffing box；10. gland；11. filler depression bar bolt；21. guiding limitator；22. steam vent；41. insert
Dial structure；42. labyrinth structure；221. bleed screw.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment is further described to the utility model.
As illustrated in fig. 1 and 2, the safe mechanically-sealing apparatus of rotating, including axle sleeve 1, the set being set in rotating shaft
Loaded on the sealing gland 2 and seal assembly on axle sleeve 1, sealing gland 2 is fixed on pump case 3, and seal assembly includes rotating ring 5, quiet
Ring 6, stationary seat 7, stationary seat 7 are fixed in sealing gland 2, and stationary ring 6 is fixed on stationary seat 7, and rotating ring 5 is fixed on by screw
On the axle sleeve 1 of rotating shaft, the outside of rotating ring 5 is provided with locking nut 8, and locking nut 8 is fixed on axle sleeve 2, blocks rotating ring 5, locking screw
Mother 8 is connected with rotating limiter 4, and rotating limiter 4 is fixed on axle sleeve 2 by screw, and rotating limiter 4 is provided with
Plug structure 41, plug structure 41 are two.
Locking nut 8 is provided with the rotating stopper slot coordinated with the plug structure 41 of rotating limiter 4, plug structure
Fixation is blocked in 41 insertion rotating stopper slots, fixed effect can be played, can also be prevented from locking when motor reversal
Nut loosening, improve the reliability of mechanical seal.
It can be rubbed in view of rotating limiter 4 with pump case 3, the casting silizin with wearability can be selected as just
The material of limiter is inverted, according to the service condition of equipment, can be changed in time after rotating limiter wear out failure, user
Just.
In order to improve sealing effectiveness, spring and seal O-ring, seal O-ring are provided between stationary seat 7 and sealing gland 2
So that spring is enclosed between sealing gland 2 and stationary seat 7, spacer medium, ensure that spring is not corroded；Meanwhile sealing gland 2
With stationary seat 7 in relative motion on axle sleeve 1, rolling friction occurs for seal O-ring, and force of rolling friction is less than the cunning of prior art
Kinetic force of friction, effectively extend the service life of seal O-ring, ensure sealing effectiveness.
In order to provide performance more preferable mechanically-sealing apparatus, following more excellent improvement can be made.
It is possible, firstly, to the structure by improving rotating limiter 4, reduces the environmental pressure of sealing surface, improves sealing effect
Fruit and the service life of seal, as shown in figure 3, rotating limiter 4 is set as having reeded labyrinth knot with the junction of pump case 3
Structure 42, when the medium to be sealed passes through labyrinth structure 42, pressure is gradually reduced, and can so reduce sealing surface environmental pressure；It is recessed
When the quantity of groove is 3, channel section is shaped as trapezoidal, slot bottom width 2mm, groove top width is 3.2mm, groove depth is 2mm, warp
Test checking is crossed, for groove under this structure proportion, antihypertensive effect is best.
Secondly, consolidate between the stationary seat 7 and sealing gland 2 of traditional mechanical sealing assembly typically by stop pin
It is fixed, but in use, stop pin easily bends deformation, damage, and when installing stationary seat 7 and sealing gland 2, prevents
The space shipped and resell on another market is smaller, it is difficult to positions, brings more inconvenience.Therefore, as shown in Figures 4 and 5, can be set on sealing gland 2
Guiding limitator 21, guiding limitator 21 can be two or more, be provided with what is coordinated with guiding limitator 21 on stationary seat 7
Guide and limit groove, the insertion of the alignment guide stopper slot of limiter 21 is directly directed to during installation, you can fixed stationary seat 7, Jin Erfang
Only stationary ring 6 rotates, convenient and swift.
Also it is exactly that the rotating ring 5 of mechanical seal and the end face of stationary ring 6 partner friction pair, are produced on two ring end faces
Appropriate ratio is pressed and kept one layer of very thin liquid film and reaches the purpose of sealing, if in the sealed chamber of rotating ring 5, stationary ring 6
Liquid is lacked, causes to dry grind, causes end face to be burnt when serious, crackle etc., seal failure, leaks.So as Figures 1 and 4 with 5 institutes
Show, steam vent 22 can be provided with sealing gland 2, bleed screw 221 is set on steam vent 22, steam vent 22 passes through sealing gland
Connect rotating ring 5, the sealed chamber of stationary ring 6.In initial start-up, deflated, can caused in sealed chamber by bleed screw 221
Full of medium, rotating ring 5 and stationary ring 6 is avoided to dry grind.
Finally, the main reason for mechanical seal leakage it is friction pair abrasion.If the rubbing surface of rotating ring 5 and stationary ring 6 damages,
Medium can leak out of sealed chamber along axle sleeve 1.Therefore, filled out as shown in figure 1, can be set between sealing gland 2 and axle sleeve 1
Hopper 9, it is filler that stuffing box 9 is interior, and as last sealing emergent together, the gland that can compress filler is set on stuffing box 9
10, gland 10 is fixed on sealing gland 2 by filler depression bar bolt 11, when leaking, tightens filler depression bar spiral shell
Bolt 11 makes gland 10 compress filler, prevents leakage, plays a part of emergent sealing, improves machine envelope reliability.
In summary, the utility model is connected by the locking nut of rotating limiter and rotating ring, can be played
Fixed effect, it also can prevent locking nut from loosening when motor reversal, improve the reliability of mechanical seal.
Certainly, it is to limitation of the present utility model that described above, which is not, and the utility model is also not limited to the example above, this
The those of ordinary skill of technical field, in essential scope of the present utility model, the variations, modifications, additions or substitutions made, all
The scope of protection of the utility model should be belonged to.
Claims (3)
1. the safe mechanically-sealing apparatus of rotating, including the axle sleeve being set in rotating shaft, the sealing that is set on axle sleeve
Gland and seal assembly, sealing gland are fixed on pump case, it is characterised in that：The seal assembly includes rotating ring, stationary ring, stationary ring
Seat, the stationary seat are fixed in sealing gland, and stationary ring is fixed on stationary seat, and the rotating ring is fixed on axle sleeve by screw
On, locking nut is provided with the outside of rotating ring, locking nut is fixed on axle sleeve, blocks rotating ring, and locking nut is connected with rotating limit
Position device, the rotating limiter are fixed on axle sleeve, and rotating limiter is provided with plug structure.
2. the safe mechanically-sealing apparatus of rotating according to claim 1, it is characterised in that：The locking nut
The rotating stopper slot with the plug respective outer side edges of rotating limiter is provided with, is blocked in plug structure insertion rotating stopper slot
Firmly fix.
3. the safe mechanically-sealing apparatus of rotating according to claim 2, it is characterised in that：The plug structure
To be two or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720296840.6U CN206626181U (en) | 2017-03-24 | 2017-03-24 | The safe mechanically-sealing apparatus of rotating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720296840.6U CN206626181U (en) | 2017-03-24 | 2017-03-24 | The safe mechanically-sealing apparatus of rotating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206626181U true CN206626181U (en) | 2017-11-10 |
Family
ID=60208568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720296840.6U Active CN206626181U (en) | 2017-03-24 | 2017-03-24 | The safe mechanically-sealing apparatus of rotating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206626181U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223899A (en) * | 2018-01-12 | 2018-06-29 | 江苏远洋阀门智控股份有限公司 | A kind of valve rod angle floating sealing structure |
| CN114060524A (en) * | 2021-11-26 | 2022-02-18 | 淄博诺方德化工装备科技有限公司 | Container type strong corrosion resistant double-end-face mechanical seal |
-
2017
- 2017-03-24 CN CN201720296840.6U patent/CN206626181U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223899A (en) * | 2018-01-12 | 2018-06-29 | 江苏远洋阀门智控股份有限公司 | A kind of valve rod angle floating sealing structure |
| CN114060524A (en) * | 2021-11-26 | 2022-02-18 | 淄博诺方德化工装备科技有限公司 | Container type strong corrosion resistant double-end-face mechanical seal |
| CN114060524B (en) * | 2021-11-26 | 2024-05-03 | 淄博诺方德化工装备科技有限公司 | Packaging type strong corrosion-resistant double-end-face mechanical seal |
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| GR01 | Patent grant |