CN205823639U - Vacuum machine sealing mechanism - Google Patents
Vacuum machine sealing mechanism Download PDFInfo
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- CN205823639U CN205823639U CN201620534063.XU CN201620534063U CN205823639U CN 205823639 U CN205823639 U CN 205823639U CN 201620534063 U CN201620534063 U CN 201620534063U CN 205823639 U CN205823639 U CN 205823639U
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- ring
- power transmission
- transmission shaft
- stationary ring
- vacuum
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Abstract
This utility model relates to a kind of vacuum machine sealing mechanism, belongs to the sealing device technical field of the delivery pump being specially adapted for vacuum and fluid.Including power transmission shaft, the pump housing, rotating ring and stationary ring, power transmission shaft is arranged in the pump housing, rotating ring is sleeved on power transmission shaft, and for being tightly connected between rotating ring, power transmission shaft and the pump housing, stationary ring one end is towards rotating ring, and the other end is then fixed on the pump housing by ring seat, and stationary ring is provided with oil storage tank in the one side of rotating ring, for the contact surface Seal Oil without interruption for stationary ring Yu rotating ring, and by stationary ring and rotating ring with oil storage tank for being divided into two annular sealing surfaces.Utility model is applied to vacuum machine, have low cost, compact conformation, without independent cooling system, take up room little, seal the advantages such as stable.
Description
Technical field
This utility model relates to a kind of vacuum machine sealing mechanism, belongs to the delivery pump being specially adapted for vacuum and fluid
Sealing device technical field.
Background technology
Power transmission shaft position air and the sealing of device interior in the middle of the vacuum equipment such as vacuum pump, lobe pump unit all the time
Problem is never properly settled, and the most traditional oil sealing class life-span is short, and single mechanical end face seal less reliable is double
End surface mechanical sealing cost is high, need that single lubricating and cooling system, structure are complicated, it is bigger to take up room.Tradition single-end surface machine
Rotating ring in the middle of tool sealing is all the annular design using one leptoprosopy in a wide face with stationary ring, two sealing surface joint places
There is one layer of very thin liquid film ensure lubrication and seal, but this layer of liquid film can be by equipment cavity body in the middle of vacuum types equipment
In vacuum suction chamber body, thus two sealing surface joint places are not or the most a small amount of liquid film, and such two sealing surfaces will be because of
Lack lubrication and dry grind, produce dry friction shriek and sealing surface Rapid Damage thus cause leakage of oil, gas leakage.Patent
2013203105523 use the mode of Electromagnetic Control to carry out gap adjustment, but its structure is complicated, needs by means of magnetic force, and magnetic
Power in use limitation is relatively big, job stability it cannot be guaranteed that；Patent 201020242699X needs substantial amounts of parts
Regulating and controlling, drive path is long, and efficiency is low, cannot ensure its stability sealed equally.
Based on this, make the application.
Utility model content
In order to overcome drawbacks described above present in existing vacuum equipment seal operation, the application provides a kind of sealing good
Good, dwell time length, it is effectively improved the vacuum machine sealing mechanism of equipment end vacuum pressure and efficiency.
For achieving the above object, the technical scheme that the application takes is as follows:
Vacuum machine sealing mechanism, including power transmission shaft, the pump housing, rotating ring and stationary ring, power transmission shaft is arranged in the pump housing, rotation
Change is sleeved on power transmission shaft, and for being tightly connected between rotating ring, power transmission shaft and the pump housing, stationary ring one end towards rotating ring,
The other end is then fixed on the pump housing by ring seat, and stationary ring is provided with oil storage tank in the one side of rotating ring, for for static
The contact surface Seal Oil without interruption of ring and rotating ring, and by stationary ring with rotating ring with oil storage tank for being divided into two annulars
Sealing surface；The pump housing, power transmission shaft, stationary ring and rotating ring surround vacuum machine inner vacuum end, and the pump housing, power transmission shaft, ring seat are with quiet
Stop ring forms vacuum machine outside atmosphere end.
Further, as preferably:
Between described ring seat and stationary ring, elastomer is set, it is furthermore preferred that the paired or single setting of described elastomer,
When being arranged in pairs, these two groups of elastomers lay respectively between stationary ring and the ring seat of power transmission shaft upper and lower surface, when single setting
Time, between this elastomer stationary ring and ring seat on the downside of power transmission shaft；Described elastomer is spring or can deformation formula glue
Body.
Described oil storage tank upper seal face is big compared with sealing surface below oil storage tank.It is positioned at the sealing surface above oil storage tank with big
Gas end connects, and neither affects flushing and nor affects on normal sealing, and is positioned at the sealing surface below oil storage tank and connects with vacuum end, very
The existence of dead end well ensure that the continuity of diaphragm seal on this sealing surface, is in even if being positioned at the diaphragm seal above oil storage tank
Partly dry grind or without oil condition, the sealing surface below oil storage tank also can guarantee that the complete of the oil film between stationary ring and rotating ring
Property.
It is provided with sealing shroud and clamping sleeve between described power transmission shaft and the pump housing, and sealing shroud and clamping sleeve are respectively in rotation
Ring both sides, sealing shroud is positioned at the side of vacuum end, and clamping sleeve is positioned at the side of atmosphere end.It is furthermore preferred that outside described clamping sleeve
It is provided with clamp nut, plays and hold out against and the effect of fixed static ring.
Described ring seat is provided with snap ring towards the side of stationary ring, is used for positioning stationary ring, prevents it from misplacing.
The application can effectively solve the integrity problem of tradition single mechanical end face seal, it is possible to replaces double mechanical
Be sealed in the technical conditions in vacuum equipment field, low cost, simple in construction, without independent cooling system, take up room little etc. excellent
Point.Wherein, in the middle of the sealing surface of stationary ring, there is a liquid storage partition grooves, stationary ring sealing surface is divided into two annular isoplanars
Two annular sealing surfaces of degree, Main Function is to ensure that the liquid film of that A annular sealing surface close to vacuum, and close to air
The state of that B annular sealing surface is half dry grinding or without liquid status, because two sealing surfaces are same plane and close to vacuum
That A annular sealing surface has one layer of liquid film the thinnest, even if even if so being half dry grinding close to that B annular sealing surface of air
Or without oil condition, also dry grinding truly can will not be formed with the gap thickness of rotating ring sealing surface one oil film of holding
The series of problems such as the abnormal sound caused and high temperature, because this gap is very thin, thus can effectively cut off stationary ring close to vacuum
The liquid film in that A annular sealing surface and rotating ring face seal face and atmosphere, it is ensured that the integrity of liquid film, the most effectively
Solve single mechanical end face seal integrity problem in the middle of the vacuum equipment such as vacuum pump, lobe pump.We are through a large amount of
Experiment, the most often set mechanical seal all operates more than 3000h, tears that A annular sealing surface close to vacuum of stationary ring after machine open
Liquid film integrity degree is fabulous, and after the operating of 3000h, the abrasion of sealing surface is almost nil, and the dwell time phase in vacuum equipment cavity
Add 10 times more than than traditional mechanical single seal, improve end vacuum pressure and the efficiency of vacuum equipment.
Accompanying drawing explanation
Fig. 1 is the sectional structure chart of the application；
Fig. 2 is the partial enlarged drawing at M position in Fig. 1.
Wherein label: 1. power transmission shaft；2. the pump housing；3. rotating ring；4. stationary ring；5. sealing shroud；6. clamping sleeve；7.
Clamp nut；8. ring seat；9. oil storage tank；10. rinse mouth；11. ring seat O；12. snap rings；13. stationary ring O；
14. elastomers.
Detailed description of the invention
Embodiment 1
The present embodiment vacuum machine sealing mechanism, in conjunction with Fig. 1, by power transmission shaft 1, the pump housing 2, rotating ring 3 and stationary ring 4 structure
Becoming, power transmission shaft 1 is arranged in the pump housing 2, and rotating ring 3 is sleeved on power transmission shaft 1, and sets between rotating ring 3, power transmission shaft 1 and the pump housing 2
It is equipped with sealing shroud 5, clamping sleeve 6 and clamp nut 7；Stationary ring 4 one end is towards rotating ring 3, and the other end is then fixed on by ring seat 8
On the pump housing 2, in conjunction with Fig. 2, stationary ring 4 is provided with oil storage tank 9 in the one side of rotating ring 3, and oil storage tank 9 depth H is >
0.01mm, width I are > 0.01mm, be simultaneously suitable for the sealing device of the stationary ring relevant with vacuum and rotating ring, be used for be
Stationary ring 4 and the contact surface Seal Oil without interruption of rotating ring 3, and stationary ring 4 is divided for boundary with oil storage tank 9 with rotating ring 3
Be two annular sealing surfaces: be positioned at below oil storage tank 9 for A annular sealing surface, be positioned at above oil storage tank 9 for B ring packing
Face, stationary ring 4 and rotating ring 3 rubbing surface width F are > 0.5mm, it is simultaneously suitable for the stationary ring 4 relevant with vacuum and rotates
The sealing device of ring 3；It is provided with rinse mouth 10 on the pump housing 2 above power transmission shaft 1, is used for supplying flushing liquor；Wherein, ring seat 8 exists
It is set with ring seat O 11 with the pump housing 2 junction, and ring seat 8 arranges snap ring 12 in the one side of stationary ring 4, and ring seat 8 is with quiet
Stationary ring O 13 is set between stop ring 4, is positioned at the pump housing 2 below power transmission shaft 1, stationary ring 4, rotating ring 3 enclose with power transmission shaft 1
Vacuum machine internal vacuum end, the pump housing 2, power transmission shaft 1, ring seat 8 is become to form vacuum machine outside atmosphere end with stationary ring 4.
Embodiment 2
The present embodiment is identical with the setting of embodiment 1 and operation principle, and difference is: arrange between ring seat 8 and stationary ring 4
Spring is as one group of elastomer 14, between this elastomer 14 stationary ring 4 and ring seat 8 on the downside of power transmission shaft 1, and this position stress
More frequent, arrange in this place, play the effect stablizing its transmission.
Embodiment 3
The present embodiment is identical with the setting of embodiment 1 and operation principle, and difference is: arrange between ring seat 8 and stationary ring 4
Spring is as elastomer 14, and this elastomer 14 organizes setting in pairs, and this many groups elastomer 14 lays respectively at power transmission shaft 1 upper and lower surface
Stationary ring 4 and ring seat 8 between, to guarantee the stability of transmission.
The application can effectively solve the integrity problem of tradition single mechanical end face seal, it is possible to replaces double mechanical
Be sealed in the technical conditions in vacuum equipment field, low cost, compact conformation, without independent cooling system, take up room little etc. excellent
Point.Wherein, in the middle of the sealing surface of stationary ring 4, have one to cut off reservoir 9, the sealing surface of stationary ring 4 is divided into two annular
Two annular sealing surfaces of isoplanar degree, are positioned at the sealing surface above oil storage tank 9 and connect with atmosphere end, and neither impact is rinsed the most not
Impact is normal to be sealed, and is positioned at the sealing surface below oil storage tank 9 and connects with vacuum end, and the existence of vacuum end well ensure that this
The continuity of diaphragm seal on sealing surface, even if being positioned at the diaphragm seal above oil storage tank 9 to be in half dry grinding or without oil condition, is positioned at storage
Sealing surface below oil groove 9 also can guarantee that the integrity of the oil film between stationary ring and rotating ring；And the Main Function of oil storage tank 9
Be to ensure that the liquid film of the A annular sealing surface close to vacuum end, and close to the state of the B annular sealing surface of atmosphere end be half dry grinding or
Without liquid status, because two sealing surfaces are same plane, the A annular sealing surface close to vacuum has one layer of liquid film the thinnest, so
Even if the B annular sealing surface close to air is half dry grinding or without oil condition, also an oil film can be kept with rotating ring 3 sealing surface
Gap thickness, will not form the series of problems such as abnormal sound and high temperature that dry grinding truly causes；Meanwhile, because this
Gap is very thin, can effectively cut off the stationary ring 4 A annular sealing surface close to vacuum end with the liquid film in rotating ring 3 face seal face with big
Gas contacts, it is ensured that the integrity of liquid film, the most effectively solves single mechanical end face seal in the vacuum such as vacuum pump, lobe pump
Integrity problem in the middle of equipment.
Through great many of experiments, often set mechanical seal all operates more than 3000h, tears after machine stationary ring 4 open close to the A ring of vacuum end
The liquid film integrity degree of shape sealing surface is fabulous, and after the operating of 3000h, stationary ring 4 is almost nil with the sealing surface wear of rotating ring 3, and
Dwell time in vacuum equipment cavity is compared traditional mechanical single seal and adds 10 times more than, improves the pole of vacuum equipment
Limit vacuum pressure and efficiency.
Above content is that the preferred implementation combining this utility model creation is entered one to what provided technical scheme made
Step describes in detail, it is impossible to assert that this utility model is created and is embodied as being confined to these explanations above-mentioned, for this utility model
For creating person of an ordinary skill in the technical field, on the premise of creating design without departing from this utility model, it is also possible to
Make some simple deduction or replace, all should be considered as belonging to the protection domain that this utility model is created.
Claims (10)
1. vacuum machine sealing mechanism, it is characterised in that: including power transmission shaft, the pump housing, rotating ring and stationary ring, power transmission shaft is arranged on
In the pump housing, rotating ring is sleeved on power transmission shaft, and stationary ring one end is then fixed on the pump housing by ring seat towards rotating ring, the other end
On, stationary ring is provided with oil storage tank in the one side of rotating ring, by stationary ring with rotating ring with oil storage tank for being divided into two
Individual annular sealing surface；The pump housing, power transmission shaft, ring seat form vacuum machine outside atmosphere end with stationary ring, and below power transmission shaft, pump
Body, power transmission shaft, stationary ring and rotating ring surround vacuum machine inner vacuum end.
2. vacuum machine sealing mechanism as claimed in claim 1, it is characterised in that: the described oil storage tank depth H that arranges is >
0.01mm, width I are > 0.01mm, it is simultaneously suitable for the stationary ring relevant with vacuum and the sealing device of rotating ring and static
The sealing device that ring runs with rotating ring exchange.
3. vacuum machine sealing mechanism as claimed in claim 1, it is characterised in that: described oil storage tank is provided with one or many
Individual.
4. vacuum machine sealing mechanism as claimed in claim 1, it is characterised in that: described stationary ring and rotating ring rubbing surface
Width F is > 0.5mm, it is simultaneously suitable for the stationary ring relevant with vacuum and the sealing device of rotating ring and stationary ring and rotation
The sealing device that ring exchange runs.
5. vacuum machine sealing mechanism as claimed in claim 1, it is characterised in that: arrange between described power transmission shaft and the pump housing
Having sealing shroud and clamping sleeve, and sealing shroud and clamping sleeve are respectively in rotating ring both sides, sealing shroud is positioned at the side of vacuum end, compresses
Set is positioned at the side of atmosphere end.
6. vacuum machine sealing mechanism as claimed in claim 1, it is characterised in that: described ring seat is towards the side of stationary ring
It is provided with snap ring.
7. the vacuum machine sealing mechanism as described in any one of claim 1-6, it is characterised in that: described ring seat and stationary ring
Between elastomer is set.
8. vacuum machine sealing mechanism as claimed in claim 7, it is characterised in that: described elastomer in pairs more organizes setting,
This many groups elastomer lays respectively between stationary ring and the ring seat of power transmission shaft upper and lower surface.
9. vacuum machine sealing mechanism as claimed in claim 7, it is characterised in that: described elastomer list group is arranged, this group
Between elastomer stationary ring and ring seat on the downside of power transmission shaft.
10. as claimed in claim 8 or 9 vacuum machine sealing mechanism, it is characterised in that: described elastomer be spring or
Can deformation formula viscoelastic body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620534063.XU CN205823639U (en) | 2016-06-02 | 2016-06-02 | Vacuum machine sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620534063.XU CN205823639U (en) | 2016-06-02 | 2016-06-02 | Vacuum machine sealing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205823639U true CN205823639U (en) | 2016-12-21 |
Family
ID=57568350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620534063.XU Active CN205823639U (en) | 2016-06-02 | 2016-06-02 | Vacuum machine sealing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205823639U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864043A (en) * | 2016-06-02 | 2016-08-17 | 徐华岳 | Vacuum mechanical seal mechanism |
-
2016
- 2016-06-02 CN CN201620534063.XU patent/CN205823639U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864043A (en) * | 2016-06-02 | 2016-08-17 | 徐华岳 | Vacuum mechanical seal mechanism |
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| GR01 | Patent grant |