CN207740464U - It is a kind of can bidirectional rotation barrel cover type groove end surface mechanical sealing structure - Google Patents
It is a kind of can bidirectional rotation barrel cover type groove end surface mechanical sealing structure Download PDFInfo
- Publication number
- CN207740464U CN207740464U CN201721875675.6U CN201721875675U CN207740464U CN 207740464 U CN207740464 U CN 207740464U CN 201721875675 U CN201721875675 U CN 201721875675U CN 207740464 U CN207740464 U CN 207740464U
- Authority
- CN
- China
- Prior art keywords
- groove
- cell wall
- dynamic pressure
- barrel cover
- cover type
- 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.)
- Active
Links
Landscapes
- Mechanical Sealing (AREA)
Abstract
The utility model discloses it is a kind of can bidirectional rotation barrel cover type groove end surface mechanical sealing structure, rotating ring including mechanical seal and stationary ring, multiple barrel cover type fluid dynamic pressure grooves being uniformly distributed circumferentially are provided at least one seal face of the rotating ring or stationary ring, the dynamic pressure groove is symmetrical about its own radial centre lines, the dynamic pressure groove includes sequentially connected notch, cell wall and slot root, the notch is arranged in the high-pressure side of the seal face, the low-pressure side in the seal face is arranged in the slot root, the cell wall includes sequentially connected rectangular groove wall and taper cell wall, the rectangular groove wall is connected with the small conical surface of the taper cell wall, the big conical surface of the taper cell wall is connected with the slot root and forms pointed shape convergence structure.The utility model planform is simple in structure, and fluid film that is continuous, stablizing can be formed between dynamic and static ring seal face when the rotating ring of the device is with rotary shaft forward direction or counter-rotating convenient for design production.
Description
Technical field
The utility model is related to it is a kind of can bidirectional rotation non-contact hydrodynamic mechanical seal end face structure, especially
Be be related to it is a kind of can bidirectional rotation barrel cover type groove end surface mechanical sealing structure.
Background technology
Mechanical seal be divided into contact with it is contactless.Seal face does not connect mutually non-contact mechanical seal at runtime
It touches, without abrasion, power consumption is very small for end face, can be worked normally under the operating mode of high speed and high pressure.With common contact-type machinery
Sealing is compared, and the feature of non-contact mechanical seal maximum is the shallow slot for having deep about a few micrometers to several millimeters on its seal face
Or deep trouth.When the shaft is rotated, these slots can generate hydrodynamic, make to keep a few micrometers of minim gap between seal face,
It is air film or liquid film between gap, frictional force is very small when seal face high speed relative rotation at this time, and due to seal face
Between gap it is very small, pass through leakage rate therebetween also very little.The key problem in technology point of non-contact mechanical seal is seal face
On groove profile, different groove profiles has different hydrodynamic characteristics, therefore, occurs the dynamic of various shapes structure in practical
Indent.It can be used for groove profile such as patent US5222743, US5947481, CN01102213.2, the US6726213B2 of bidirectional rotation,
CN201210034116.8, CN201310059819.0 etc. once disclosed report.Opening up for dynamic pressure groove will not only have preferable shape
Shape will also be conducive to fabricate to improve dynamic pressure effect and adverse current pumping effect, easy to process to reduce production cost.It is two-way
Although slot is to the direction of rotation of axis without limitation, its hydrodynamic characteristic is not strong, fluid film insufficient rigidity.Most of two-way groove profiles
Since the hydrodynamic characteristic for lacking enough causes seal face gap too small, system pressure fluctuation at this time and rotor disturbance are often led
End face collision is caused, sealing surface wear and premature failure are made.
Utility model content
In order to solve the above technical problems, the utility model provide it is a kind of have a good hydrodynamic effect can bidirectional rotation
Barrel cover type groove end surface mechanical sealing structure, when the rotating ring of the device is with rotary shaft forward direction or counter-rotating, in dynamic and static ring end face
Between can form stable fluid film.
To achieve the above object, the utility model provides following technical solution：
The utility model provide it is a kind of can bidirectional rotation barrel cover type groove end surface mechanical sealing structure, including mechanical seal
Rotating ring and stationary ring, be provided with multiple barrel covers being uniformly distributed circumferentially at least one seal face of the rotating ring or stationary ring
Type fluid dynamic pressure groove, the dynamic pressure groove is symmetrical about its own radial centre lines, the dynamic pressure groove include sequentially connected notch,
Cell wall and slot root, the notch are arranged in the high-pressure side of the seal face, and the slot root is arranged in the low of the seal face
Side is pressed, the cell wall includes sequentially connected rectangular groove wall and taper cell wall, and the rectangular groove wall is small with the taper cell wall
The conical surface is connected, and the big conical surface of the taper cell wall is connected with the slot root and forms pointed shape convergence structure.
Optionally, drainage trough is provided on the dynamic pressure groove, the drainage trough extends to the slot root from the notch.
Optionally, the face of the slot root is the arcwall face concentric with the rotating ring or stationary ring.
Optionally, the dynamic pressure groove is to wait deep trouths.
Optionally, the groove depth of the dynamic pressure groove is 1~100 μm.
Optionally, the dynamic pressure groove is groove with variable depth, radial to be gradually become shallower as from the notch to the slot root, circumferencial direction by
The center line of the dynamic pressure groove gradually becomes shallower as to cell wall described in both sides.
Optionally, the drainage trough is to wait deep trouths.
Optionally, the groove depth of the drainage trough is 1~50 μm, and the width of the drainage trough is 0.5~4mm.
Optionally, the radical length ratio of the rectangular groove wall and the dynamic pressure groove is 0.2~0.8, the notch with it is described
The width ratio of slot root is 0.2~0.8, and the angle of the taper cell wall is 20 °~160 °.
The utility model achieves following technique effect compared with the existing technology：
It is provided by the utility model it is a kind of can bidirectional rotation barrel cover type groove end surface mechanical sealing structure shape and structure it is simple,
It is produced convenient for design；When the rotating ring of the device is with rotary shaft forward direction or counter-rotating, between dynamic and static ring seal face
Form fluid film that is continuous, stablizing；The big conical surface of taper cell wall is connected with slot root and forms pointed shape convergence structure, herein
Region flow area is obviously reduced, and after fluid is compressed, is formed higher-pressure region in this region, can be obviously improved the membrane pressure of fluid film
And rigidity, effectively improve the stability of two-way chute；When machine is run, rotating ring rotation generates relative motion with stationary ring, moves at this time
First rectangular groove wall of indent is upstream face, the other side with the first taper cell wall (or the second rectangular groove wall and second taper cell wall)
Second rectangular groove wall and the second taper cell wall (or the first rectangular groove wall and first taper cell wall) are back side, sealing ring surface with
Under the shear action of fluid, the bootable fluid of upstream face is pumped into dynamic pressure groove, and back side plays and drains out fluid in dynamic pressure groove
Effect, can effectively reduce by the leakage rate of sealing fluid and avoid the possibility that impurity particle in fluid deposits in slot.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the barrel cover type groove end face in the utility model；
Fig. 2 is the dynamic pressure slot structure schematic diagram that drainage trough is provided in the utility model；
Fig. 3 is A-A schematic diagrames when dynamic pressure groove etc. is deep in Fig. 2；
Fig. 4 is A-A schematic diagrames when dynamic pressure groove deepens in Fig. 2；
Fig. 5 is B-B schematic diagrames when dynamic pressure groove deepens in Fig. 2；
Reference sign：1 --- rotating ring；2 --- dynamic pressure groove；21 --- the first rectangular groove wall；22 --- the second rectangle
Cell wall；23 --- the first taper cell wall；24 --- the second taper cell wall；3 --- slot root；4 --- notch；5 --- drainage trough；
A --- low-pressure side；B --- high-pressure side；The radical length of L1 --- rectangular groove wall；Total radical length of L2 --- dynamic pressure groove；
The width of L3 --- notch；L4 --- the width of slot root；The width of L5 --- drainage trough；The groove depth of H1 --- dynamic pressure groove；
The groove depth of H2 --- drainage trough；The exradius of Ro --- rotating ring or stationary ring；The inner circle radius of Ri --- rotating ring or stationary ring；
Rg --- the radius of slot root；The angle that β 1 --- a points are formed with the line and c points of center of circle O and the line of center of circle O；β 2 --- b points
The angle formed with the line of center of circle O with line and the c point of center of circle O；β 3 --- the first taper cell wall and the second taper cell wall
Angle.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, below in conjunction with the accompanying drawings and have
Body embodiment is described in further detail utility model.
As shown in Figs. 1-5, the utility model provide it is a kind of can bidirectional rotation barrel cover type groove end surface mechanical sealing structure, packet
Include the rotating ring and stationary ring of mechanical seal, be provided at least one seal face of the rotating ring or stationary ring it is multiple circumferentially uniformly
The barrel cover type fluid dynamic pressure groove 2 of distribution, in this present embodiment, as shown in Figure 1, being selected as being provided on the seal face of rotating ring 1
Multiple barrel cover type fluid dynamic pressure grooves 2 being uniformly distributed circumferentially, dynamic pressure groove 2 is symmetrical about its own radial centre lines, dynamic pressure groove 2
Including sequentially connected notch 4, cell wall and slot root 3, the high-pressure side B in the seal face is arranged in notch 4, and the setting of slot root 3 exists
The low-pressure side A of the seal face, the cell wall include sequentially connected rectangular groove wall and taper cell wall, the rectangular groove wall with
The small conical surface of the taper cell wall is connected, and the big conical surface of the taper cell wall is connected with the slot root and forms pointed shape receipts
Hold back structure.It is obviously reduced in pointed shape convergence structural region flow area, after fluid is compressed, higher-pressure region is formed in this region,
It can be obviously improved the membrane pressure and rigidity of fluid film, effectively improve the stability of two-way chute.
In this present embodiment, as shown in Figs. 1-2, the rectangular groove wall includes the first rectangular groove wall 21 and the second rectangular groove wall
22, the taper cell wall includes the first taper cell wall 23 and the second taper cell wall 24, the first rectangular groove wall 21 and the first cone tank
Wall 23 connects, and the second rectangular groove wall 22 is connect with the second taper cell wall 24.
For the ease of air storage reservoir, the lubricity between rotating ring and stationary ring is improved, rotating ring and stationary ring when avoiding machine startup
The case where mutually killing, in this present embodiment, as shown in Fig. 2, be provided with drainage trough 5 on dynamic pressure groove 2, drainage trough 5 is from slot
Mouth 4 extends to slot root 3, and dynamic pressure groove 2 is symmetrical about its own radial centre lines, and drainage trough 5 is about its own radial centre lines pair
Claim.Meanwhile drainage trough 5 can also store the impurity particle in fluid, prevent impurity particle from destroying the sealing of rotating ring 1 and stationary ring
Face.In this present embodiment, drainage trough 5 is chosen as equal deep trouths, and the optional value range of the groove depth H2 of drainage trough 5 is 1~50 μm, is drawn
The optional value range of the width L5 of chute 5 is 0.5~4mm.
In order to make the membrane pressure of fluid film be more evenly distributed, the face of slot root 3 is set as the arc concentric with the rotating ring or stationary ring
Shape face, in this present embodiment, as shown in Figs. 1-2, the face of slot root 3 is set as the arcwall face concentric with rotating ring 1, center of circle O.
In this present embodiment, as Figure 2-3, dynamic pressure groove 2 is to wait deep trouths, the optional value ranges of groove depth H1 of dynamic pressure groove 2
It is 1~100 μm.In another embodiment, as shown in Fig. 2,4,5, dynamic pressure groove 2 is groove with variable depth, it is radial from notch 4 to slot root 3 by
Gradual change is shallow, and circumferencial direction is gradually become shallower as from the center line of dynamic pressure groove 2 to cell wall described in both sides.When dynamic pressure groove 2 is groove with variable depth, become
The runner area of passage convergence of deep trouth 2 is stronger, is further constantly reduced from notch 4 to 3 flow area of slot root, with equal deep trouths
Dynamic pressure groove 2 is compared, and the membrane pressure and rigidity of bigger can be generated.
In this present embodiment, as shown in Figs 1-4, total radical length L2 of the radical length L1 Yu dynamic pressure groove 2 of rectangular groove wall
The ratio between be L1/L2=0.2~0.8；The ratio between the width L3 of notch 4 and the width L4 of slot root 3 are L3/L4=0.2~0.8；Slot dam
Than (Ro-Rg)/(Ro-Ri)=0.2~0.9；2/ 1=0.2~0.8 β slot weir ratio β；The angle of taper cell wall i.e. the first cone tank
The angle of wall 23 and the second taper cell wall 24 is 20 °~160 °.
It is provided by the utility model it is a kind of can bidirectional rotation barrel cover type groove end surface mechanical sealing structure, machine run
When, rotating ring 1 rotates, and generates relative motion with stationary ring, the first rectangular groove wall 21 of dynamic pressure groove 2 is with the first taper cell wall 23 at this time
Upstream face, correspondingly, the other side the second rectangular groove wall 22 and the second taper cell wall 24 are back side (or the second square of dynamic pressure groove 2
Shape cell wall 22 and the second taper cell wall 24 are upstream face, correspondingly, the first rectangular groove wall 21 and the first taper cell wall 23 are backwater
Face), under the shear action of sealing ring surface and fluid, the bootable fluid of upstream face is pumped into dynamic pressure groove 2, and the backwater
Face plays the role of draining out fluid in dynamic pressure groove 2, can effectively reduce by the leakage rate of sealing fluid and avoid in fluid
The possibility that impurity particle deposits in slot, in the utility model can bidirectional rotation barrel cover type groove end surface mechanical sealing structure shape
Shape is simple in structure, is sealed in dynamic and static ring convenient for design production when the rotating ring of the device is with rotary shaft forward direction or counter-rotating
Fluid film that is continuous, stablizing can be formed between end face.
It applies specific case in this specification to be expounded the principles of the present invention and embodiment, the above reality
The explanation for applying example is merely used to help understand the method and its core concept of the utility model；Meanwhile for the general of this field
Technical staff, according to the thought of the utility model, there will be changes in the specific implementation manner and application range.To sum up institute
It states, the content of the present specification should not be construed as a limitation of the present invention.
Claims (9)
1. it is a kind of can bidirectional rotation barrel cover type groove end surface mechanical sealing structure, include the rotating ring and stationary ring of mechanical seal, it is special
Sign is, multiple barrel cover type fluids being uniformly distributed circumferentially are provided at least one seal face of the rotating ring or stationary ring
Dynamic pressure groove, the dynamic pressure groove is symmetrical about its own radial centre lines, the dynamic pressure groove include sequentially connected notch, cell wall and
Slot root, the notch are arranged in the high-pressure side of the seal face, and the low-pressure side in the seal face, institute is arranged in the slot root
It includes sequentially connected rectangular groove wall and taper cell wall to state cell wall, and the rectangular groove wall is connected with the small conical surface of the taper cell wall
It connects, the big conical surface of the taper cell wall is connected with the slot root and forms pointed shape convergence structure.
2. it is according to claim 1 can bidirectional rotation barrel cover type groove end surface mechanical sealing structure, which is characterized in that it is described
Drainage trough is provided on dynamic pressure groove, the drainage trough extends to the slot root from the notch.
3. it is according to claim 1 can bidirectional rotation barrel cover type groove end surface mechanical sealing structure, which is characterized in that it is described
The face of slot root is the arcwall face concentric with the rotating ring or stationary ring.
4. it is according to claim 1 or 2 can bidirectional rotation barrel cover type groove end surface mechanical sealing structure, which is characterized in that
The dynamic pressure groove is to wait deep trouths.
5. it is according to claim 4 can bidirectional rotation barrel cover type groove end surface mechanical sealing structure, which is characterized in that it is described
The groove depth of dynamic pressure groove is 1~100 μm.
6. it is according to claim 1 or 2 can bidirectional rotation barrel cover type groove end surface mechanical sealing structure, which is characterized in that
The dynamic pressure groove is groove with variable depth, and radial to be gradually become shallower as from the notch to the slot root, circumferencial direction is by the dynamic pressure groove
Heart line gradually becomes shallower as to cell wall described in both sides.
7. it is according to claim 2 can bidirectional rotation barrel cover type groove end surface mechanical sealing structure, which is characterized in that it is described
Drainage trough is to wait deep trouths.
8. it is according to claim 7 can bidirectional rotation barrel cover type groove end surface mechanical sealing structure, which is characterized in that it is described
The groove depth of drainage trough is 1~50 μm, and the width of the drainage trough is 0.5~4mm.
9. it is according to claim 1 can bidirectional rotation barrel cover type groove end surface mechanical sealing structure, which is characterized in that it is described
The radical length ratio of rectangular groove wall and the dynamic pressure groove is 0.2~0.8, the width ratio of the notch and the slot root is 0.2~
0.8, the angle of the taper cell wall is 20 °~160 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721875675.6U CN207740464U (en) | 2017-12-28 | 2017-12-28 | It is a kind of can bidirectional rotation barrel cover type groove end surface mechanical sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721875675.6U CN207740464U (en) | 2017-12-28 | 2017-12-28 | It is a kind of can bidirectional rotation barrel cover type groove end surface mechanical sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207740464U true CN207740464U (en) | 2018-08-17 |
Family
ID=63120478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721875675.6U Active CN207740464U (en) | 2017-12-28 | 2017-12-28 | It is a kind of can bidirectional rotation barrel cover type groove end surface mechanical sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207740464U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906206A (en) * | 2017-12-28 | 2018-04-13 | 温州市天成密封件制造有限公司 | It is a kind of can bidirectional rotation barrel cover type groove end surface mechanical sealing structure |
| WO2021200938A1 (en) * | 2020-03-31 | 2021-10-07 | イーグル工業株式会社 | Sliding component |
-
2017
- 2017-12-28 CN CN201721875675.6U patent/CN207740464U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906206A (en) * | 2017-12-28 | 2018-04-13 | 温州市天成密封件制造有限公司 | It is a kind of can bidirectional rotation barrel cover type groove end surface mechanical sealing structure |
| WO2021200938A1 (en) * | 2020-03-31 | 2021-10-07 | イーグル工業株式会社 | Sliding component |
| JP7480278B2 (en) | 2020-03-31 | 2024-05-09 | イーグル工業株式会社 | Sliding parts |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107906206A (en) | It is a kind of can bidirectional rotation barrel cover type groove end surface mechanical sealing structure | |
| CN106439023B (en) | A kind of cosine curve type mechanical seal end surface structure | |
| CN103470773B (en) | Imitative pinion type multichannel groove end face seal structure | |
| CN202327105U (en) | Mechanical sealing device for fixed taper type waveform curved surface | |
| CN205877184U (en) | Mechanical seal ring with imitative chinese sweet gum lobate shaped groove | |
| CN207740464U (en) | It is a kind of can bidirectional rotation barrel cover type groove end surface mechanical sealing structure | |
| CN103453147B (en) | There is the non-contact mechanical seal ring of double rotational directions fluid dynamic pressure groove | |
| CN205877198U (en) | Mechanical seal ring with oval groove | |
| CN102588600A (en) | Profiled groove end surface non-contact mechanical seal with backflow function | |
| CN110925426A (en) | Upstream pumping mechanical sealing ring with elliptical groove | |
| CN201851656U (en) | Hydrostatic and hydrodynamic combined mechanical sealing structure | |
| CN104235372A (en) | Dynamic pressure tank mechanical seal structure with improved liquid film cavitation characteristic | |
| CN102322528A (en) | The asymmetric waviness end face of a kind of active and static pressure combined type fluid machinery sealing configuration | |
| CN101985981A (en) | Dynamic and static pressure integrated mechanical sealing structure with inclined straight line slots of nucleus main pump | |
| CN104154235A (en) | Spiral distribution convergent micropore texture mechanical seal | |
| CN205350360U (en) | Liquid film seal end face slot type structure that can two -way rotation | |
| CN108050258B (en) | A kind of mechanical seal structure of imitative brambles shape type groove | |
| CN205978439U (en) | Cosine curve type mechanical seal terminal surface structure | |
| CN205244387U (en) | Two -way rotatory petal -shaped terminal surface mechanical seal structure | |
| CN107314112A (en) | A kind of mechanical seal end surface structure of sharpening disk texture | |
| CN207178702U (en) | Dynamic pressure pumping formula non-contacting mechanical seal | |
| CN204187000U (en) | A kind of lightning class groove end surface mechanical sealing structure | |
| CN107327576A (en) | A kind of combined low leakage mechanical seal end face structure of annular groove cavitation texture | |
| CN211288740U (en) | Upstream pumping mechanical sealing ring with elliptical groove | |
| CN206988428U (en) | A kind of combined low leakage mechanical seal end face structure of annular groove cavitation texture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |