CN205841766U - A kind of mechanical seal - Google Patents
A kind of mechanical seal Download PDFInfo
- Publication number
- CN205841766U CN205841766U CN201620602730.3U CN201620602730U CN205841766U CN 205841766 U CN205841766 U CN 205841766U CN 201620602730 U CN201620602730 U CN 201620602730U CN 205841766 U CN205841766 U CN 205841766U
- Authority
- CN
- China
- Prior art keywords
- seal
- ring
- mechanical seal
- axle sleeve
- rotating 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.)
- Active
Links
Landscapes
- Mechanical Sealing (AREA)
Abstract
This utility model relates to a kind of mechanical seal, including outer end cap, the axle sleeve being sheathed on outside rotating shaft, the primary seal being positioned on axle sleeve and secondary seal, described secondary seal is positioned at the atmospheric side of primary seal, described axle sleeve, primary seal, secondary seal and outer end cap surround annular seal space, described secondary seal is upstream pumping mechanical seal, described upstream pumping mechanical seal includes stationary ring, rotating ring, elastic parts and spring base, described stationary ring is fixing with outer end cap to be connected, described spring base and moving ring sleeve are located at outside axle sleeve, described elastic parts is between spring base and rotating ring, the end face of described rotating ring or stationary ring is provided with seal groove, outer end cap outside described secondary seal is provided with sealingfluid inlet and seal fluid outlet.Secondary seal is set to upstream pumping mechanical seal, for substituting traditional mechanical seal, sealing effectiveness can be effectively improved and increase the service life.
Description
Technical field
This utility model relates to a kind of mechanical seal.
Background technology
Along with the development of modern science and technology, the industries such as contacting mechanical seal is widely used in petrochemical industry, medicine food are led
Territory.Contacting mechanical seal relies on friction pair end face directly to contact operation and realizes medium-tight, and long-term operating there will be sealed end
Surface wear, thus sealing leak occurs, reduce the security performance of sealing, environmental-protecting performance, add and safeguard use cost.
Upstream pumping mechanical seal is a kind of novel non-contact end face seal theoretical based on Modern fluid hydrodynamic lubrication.
Upstream pumping mechanical seal its feature compared with standard machinery sealing is that it utilizes grooved faces technology to improve the stream of sealing
Body dynamic pressure effect.By dynamic pressure effect, making contactless abrasion between the end face of rotating ring and stationary ring, seal life is also greatly improved.
Utility model content
The purpose of this utility model is to provide a kind of good sealing effect, the mechanical seal of length in service life.
In order to achieve the above object, the technical solution adopted in the utility model is: a kind of mechanical seal, including outer end cap,
The axle sleeve being sheathed on outside rotating shaft, the primary seal being positioned on axle sleeve and secondary seal, described secondary seal is positioned at primary seal
Atmospheric side, described secondary seal is upstream pumping mechanical seal, and described upstream pumping mechanical seal includes stationary ring, rotating ring, elasticity
Assembly and spring base, described stationary ring is fixing with outer end cap to be connected, and described spring base and moving ring sleeve are located at outside axle sleeve, described elastic group
Part is between spring base and rotating ring, and the end face of described rotating ring or stationary ring is provided with seal groove, outside described secondary seal outside
End cap is provided with sealingfluid inlet and seal fluid outlet.
Mechanical seal as above a kind of, further illustrating as, described seal groove is multiple the most uniformly to divide
The helicla flute of cloth and the multiple drainage troughs being distributed uniformly and circumferentially being positioned at helicla flute upstream.
Mechanical seal as above a kind of, further illustrate into, described drainage trough is arcuate groove, described helicla flute top
It is positioned at the downstream at arcuate groove top.
Mechanical seal as above a kind of, further illustrate into, intersect between described adjacent two drainage troughs.
Mechanical seal as above a kind of, further illustrate into, position, described sealingfluid inlet is higher than seal fluid outlet
Position.
Mechanical seal as above a kind of, further illustrate into, described elastic parts includes spring and throw-out collar, described bullet
Spring abutment is provided with spring mounting hole near one end of atmospheric side, and described spring is positioned in spring mounting hole, and described throw-out collar is positioned at spring
And between rotating ring.
Mechanical seal as above a kind of, further illustrate into, described spring mounting hole is provided with outer axially outside,
Described rotating ring near one end of side medium between outer and axle sleeve.
Mechanical seal as above a kind of, further illustrate into, be provided with stationary ring anti-rotation between described stationary ring and outer end cap
Pin and stationary ring sealing ring, be provided with seal ring of moving ring between described rotating ring and axle sleeve.
Mechanical seal as above a kind of, further illustrate into, the material of described rotating ring and stationary ring is carbon graphite.
The beneficial effects of the utility model are: secondary seal is set to upstream pumping mechanical seal, are used for substituting tradition
Mechanical seal, sealing effectiveness and increasing the service life can be effectively improved.The end face of rotating ring or stationary ring is provided with helicla flute, institute
State spiral fluted upstream and be provided with drainage trough, by helicla flute, use helicla flute dynamic pressure effect, utilize Jie leaking to helicla flute district
Matter forms one liquid seal band, intercepts medium and continues to leak out, thus reaches the purpose sealed, simultaneously by drainage trough,
Seal face operating lubricity can be improved, thus realize lubricating end surface and medium-tight double effects, make seal face be in
Boundary friction even fluid friction, reduces coefficient of friction, reduces heating, reduces and weares and teares, the purpose increased the service life,
And static pressure state does not leaks.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
Fig. 2 is A zoomed-in view in Fig. 1.
Fig. 3 is seal groove end face structure schematic diagram.
In figure: 1, stationary ring；2, stationary ring sealing ring；3, stationary ring stop pin；4, rotating ring；5, seal ring of moving ring；6, spring；7, bullet
Spring abutment；8, axle sleeve；9, throw-out collar；10, primary seal；11, sealingfluid inlet；12, seal fluid outlet；13, helicla flute；14, drain
Groove；15, outer end cap.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model embodiment is further elaborated.
As shown in Figure 1 to Figure 2, a kind of mechanical seal that this utility model provides, including outer end cap 15, it is sheathed on outside rotating shaft
Axle sleeve 8, axle sleeve 8 rotates with rotating shaft, the primary seal 10 being positioned on axle sleeve 8 and secondary seal, described secondary seal position
It is arranged in series on axle sleeve 8 in the atmospheric side of primary seal 10, i.e. primary seal and secondary seal.Described secondary seal is upstream
Pumping machine seals, and described upstream pumping mechanical seal includes stationary ring 1, rotating ring 4, elastic parts and spring base 7, described rotating ring 4
It is carbon graphite with the material of stationary ring 1.Described stationary ring 1 is fixing with outer end cap 15 to be connected, and also sets between stationary ring 1 and outer end cap 15
Stationary ring stop pin 3 and stationary ring sealing ring 2, described stationary ring stop pin 3 is had to be used for making to remain quiet between stationary ring 1 and outer end cap 15
Only, prevent stationary ring 1 from rotating.Described spring base 7 and rotating ring 4 are sheathed on outside axle sleeve 8, and described elastic parts is positioned at spring base 7 and moves
Between ring 4, spring base 7, elastic parts and rotating ring 4 rotate with axle sleeve 8, are provided with seal ring of moving ring between rotating ring 4 and axle sleeve 8
5.Described elastic parts includes spring 6 and throw-out collar 9, and described spring base 7 is provided with spring mounting hole near one end of atmospheric side, described
Spring 6 is positioned in spring mounting hole, and described throw-out collar 9, can be along axle outside spring mounting hole between spring 6 and rotating ring 4
To being provided with outer, described rotating ring 4 is near one end of side medium between outer and axle sleeve 8, i.e. spring base 7 has one to rotating ring 4
Individual position-limiting action, makes rotating ring 4 more steady when moving up and down.Described elastic parts can also use elastic ring to replace.
The end face of described rotating ring 4 or stationary ring 1 is provided with seal groove, and the outer end cap 15 outside described secondary seal is provided with close
Sealing liquid entrance 11 and seal fluid outlet 12, position, described sealingfluid inlet 11 is higher than seal fluid outlet 12 position, i.e. by sealing
Liquid flowing from top to bottom can take away the dregs in device, decreases abrasion, makes device the safest.By setting
Put seal groove, thus form stable liquid film on the end face that rotating ring 4 contacts with stationary ring 1, make between the end face of rotating ring 4 and stationary ring 1
Contactless abrasion, while decreasing abrasion, it is ensured that sealing effectiveness, extends service life.
As it is shown on figure 3, as preferably, described seal groove is multiple helicla flute 13 being distributed uniformly and circumferentially and is positioned at
Multiple drainage troughs 14 being distributed uniformly and circumferentially of helicla flute 13 upstream, described rotating ring 4 or stationary ring 1 are radially
Upstream, is downstream radially inward.Described drainage trough 14 is preferably arcuate groove, and described helicla flute 13 top is positioned at arcuate groove top
The downstream in portion, intersects as between the most adjacent two drainage troughs 14.Described drainage trough 14 can also use straight-line groove, when for
During arcuate groove, by increasing capacitance it is possible to increase the liquid inlet volume of end face.In the running, sealing fluid enters end face according to drainage trough 14 by the upstream, thus
Form liquid film, and be now provided with helicla flute 13 in end face downstream, utilize the sealing fluid being leaked in helicla flute 13, pass through
Dynamic pressure effect, forms one liquid seal barrier tape, thus reaches the purpose sealed, and can by the drainage trough 14 of upstream
Improve seal face operating lubricity, thus realize lubricating end surface and medium-tight double effects, make abrasion and temperature rise, compare end face
It is greatly reduced when not doing any process.
This utility model is not limited to examples detailed above, in claims limited range of the present utility model, this
Various deformation or amendment that skilled person can make without creative work are all protected by this patent.
Claims (9)
1. a mechanical seal, including outer end cap, the axle sleeve being sheathed on outside rotating shaft, the primary seal being positioned on axle sleeve and two grades close
Envelope, described secondary seal is positioned at the atmospheric side of primary seal, it is characterised in that: described secondary seal is that pumping machinery is close
Envelope, described upstream pumping mechanical seal includes stationary ring, rotating ring, elastic parts and spring base, and described stationary ring is fixing with outer end cap even
Connecing, described spring base and moving ring sleeve are located at outside axle sleeve, described elastic parts between spring base and rotating ring, described rotating ring or quiet
The end face of ring is provided with seal groove, and the outer end cap outside described secondary seal is provided with sealingfluid inlet and seal fluid outlet.
A kind of mechanical seal the most according to claim 1, it is characterised in that: described seal groove is multiple the most equal
The helicla flute of even distribution and the multiple drainage troughs being distributed uniformly and circumferentially being positioned at helicla flute upstream.
A kind of mechanical seal the most according to claim 2, it is characterised in that: described drainage trough is arcuate groove, described spiral
Groove top is positioned at the downstream at arcuate groove top.
4. according to a kind of mechanical seal described in Claims 2 or 3, it is characterised in that: between described adjacent two drainage troughs mutually
Intersect.
A kind of mechanical seal the most according to claim 1, it is characterised in that: position, described sealingfluid inlet is higher than sealing fluid
Exit position.
A kind of mechanical seal the most according to claim 1, it is characterised in that: described elastic parts includes spring and throw-out collar,
Described spring base is provided with spring mounting hole near one end of atmospheric side, and described spring is positioned in spring mounting hole, described throw-out collar position
Between spring and rotating ring.
A kind of mechanical seal the most according to claim 6, it is characterised in that: described spring mounting hole is provided with axially outside
Outer, described rotating ring near one end of side medium between outer and axle sleeve.
A kind of mechanical seal the most according to claim 1, it is characterised in that: it is provided with stationary ring between described stationary ring and outer end cap
Stop pin and stationary ring sealing ring, be provided with seal ring of moving ring between described rotating ring and axle sleeve.
A kind of mechanical seal the most according to claim 1, it is characterised in that: the material of described rotating ring and stationary ring is carbon stone
Ink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620602730.3U CN205841766U (en) | 2016-06-20 | 2016-06-20 | A kind of mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620602730.3U CN205841766U (en) | 2016-06-20 | 2016-06-20 | A kind of mechanical seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205841766U true CN205841766U (en) | 2016-12-28 |
Family
ID=58152521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620602730.3U Active CN205841766U (en) | 2016-06-20 | 2016-06-20 | A kind of mechanical seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205841766U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952902A (en) * | 2016-06-20 | 2016-09-21 | 成都通密封股份有限公司 | Mechanical seal |
-
2016
- 2016-06-20 CN CN201620602730.3U patent/CN205841766U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952902A (en) * | 2016-06-20 | 2016-09-21 | 成都通密封股份有限公司 | Mechanical seal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6776232B2 (en) | Sliding parts | |
| CN201306445Y (en) | Liquid film lubrication double end surface non-contact mechanical seal device | |
| CN105952902A (en) | Mechanical seal | |
| JP2017180838A (en) | Sealing device | |
| CN104769340A (en) | Sliding component | |
| CN205841766U (en) | A kind of mechanical seal | |
| CN102297152A (en) | Oil film lubrication non-contact serial mechanical seal device for high-temperature oil pump | |
| CN109681637A (en) | A kind of daul-side dry round gas seal for screw vacuum dry pump | |
| CN104019240A (en) | Self-cleaning type polypropylene recycle gas compressor gas film sealing structure | |
| CN206555446U (en) | A kind of self-lubricating non-contact mechanical seal device | |
| CN104989825B (en) | A kind of gland seal device | |
| CN104343722A (en) | Floating ring seal device | |
| CN103629357B (en) | The sealing mechanism of vane type rotary valve | |
| CN205715677U (en) | A kind of nano-level grinder Bidirectional balance mechanical seal device | |
| CN105402416A (en) | Sealing ring for rotating shaft | |
| CN202251055U (en) | Film-lubrication non-contact serial mechanical sealing device for high-temperature oil pump | |
| CN204403384U (en) | Contactless dynamic sealing assembly | |
| CN107191596A (en) | A kind of non-contact mechanical seal and the seal assembly for preventing lubrication leakage | |
| CN103821943A (en) | Non-contact mechanical sealing method and non-contact mechanical sealing device for high-temperature and high-viscosity medium pump | |
| CN205639618U (en) | Mechanical seal end face slot type structure with bispin is to hydrodynamic effect | |
| KR101382040B1 (en) | Shaft sealing structure and rotary fluid machine | |
| CN104389907B (en) | Anti-wearing liner | |
| CN203532749U (en) | High-speed and high-pressure mechanical sealing device | |
| CN208997352U (en) | Double positioning magnetic mechanical seal bearing arrangement | |
| CN208268408U (en) | A kind of multiple lip seal device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |