CN206958256U - A kind of bidirectional compensating formula mechanical seal - Google Patents
A kind of bidirectional compensating formula mechanical seal Download PDFInfo
- Publication number
- CN206958256U CN206958256U CN201720532357.3U CN201720532357U CN206958256U CN 206958256 U CN206958256 U CN 206958256U CN 201720532357 U CN201720532357 U CN 201720532357U CN 206958256 U CN206958256 U CN 206958256U
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- China
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- mechanical seal
- spring base
- rubber standoff
- formula mechanical
- stationary ring
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Abstract
The utility model discloses a kind of bidirectional compensating formula mechanical seal, a kind of bidirectional compensating formula mechanical seal includes elastic component and two symmetrical seal assemblies；The seal assembly includes rubber standoff, spring base, rotating ring, stationary ring and interstage sleeve；The bore area of the rubber standoff protrudes to be formed axially as the bulge loop of arcuation to axle center；The outer wall of the rubber standoff is in step-like, and the spring base is tightly sleeved in the outside of rubber standoff and abutted with the axial end of step, and the elastic component is set in the outside of spring base, and is connected to vertically on spring base；The other end of the rubber standoff and rotating ring axially abut, and the rotating ring abuts with stationary ring, and interstage sleeve is socketed in the outside of stationary ring and abutted with the axial end of stationary ring, are compensated between centers is automatically provided, the advantages of still keeping fabulous sealing under vibration.
Description
Technical field
A kind of seal is the utility model is related to, more particularly to a kind of bidirectional compensating formula mechanical seal.
Background technology
The sealing of mechanical seal mainly includes between rotating shaft and seal, between the dynamic and static ring of seal, seal and peace
Fill the sealing between hole position.
The working face of rotating ring and the working face of stationary ring in the case of relatively high speed rotation when working, because rotating ring revolves
The power turned is generally from motivation main shaft, thus the vibration in rotary course is inevitable, and the frequency vibrated is generally very
Height, typically elastic component can be all axially set in mechanical seal, such as spring or bellows；So as to which the vibration to axial direction provides compensation；
But radially, as can not be effectively compensated between axle and seal so that there may be instantaneous when work
Gap, and cause the suspended particulate in liquid to enter in sealing surface, it is greatly reduced the reliability of sealing.
Utility model content
The purpose of this utility model is to provide a kind of bidirectional compensating formula mechanical seal, which solves existing mechanical seal and lacks
The problem of few radial seal compensation.
Above-mentioned technical purpose of the present utility model technical scheme is that：
A kind of bidirectional compensating formula mechanical seal, including elastic component and two symmetrical seal assemblies；The seal assembly bag
Include rubber standoff, spring base, rotating ring, stationary ring and interstage sleeve；The bore area of the rubber standoff protrudes to be formed to axle center
The bulge loop of arcuation；The outer wall of the rubber standoff in step-like, the spring base be tightly sleeved the outside of rubber standoff and with
The axial end of the step of rubber standoff abuts, and the elastic component is set in the outside of spring base, and is connected to spring vertically
On seat；The other end of the rubber standoff axially abuts with rotating ring, and the rotating ring abuts with stationary ring, and interstage sleeve is socketed in the outer of stationary ring
Portion simultaneously abuts with the axial end of stationary ring.
Using such scheme, by the guide effect of bulge loop, seal can be easier to be socketed in rotating shaft, and be socketed
Face contact is become by a contact after completion, but is same as the plastic deformation of axial direction will not occur in end；For having installed
Into mechanical seal, mutually abutted with end between two seal assemblies, and the precompression being separated from each other is provided by elastic component, with
This causes between spring base and rubber standoff, between rubber standoff and rotating ring, between rotating ring and stationary ring, between stationary ring and interstage sleeve,
And enough precompressions are all kept between the mounting hole where interstage sleeve and mechanical seal installation, so as to form good sealing group
Close；When rubber standoff and rotating ring are with axis of rotation, shaft vibration, be tightly sleeved bulge loop in rotating shaft on the one hand by
Compensation can be provided in pre- deformation, the bulge loop of another aspect arcuation can produce the micro- rotation for being tangential to axle center relative to rotating shaft, and
Because bulge loop is originally cambered surface in the axial direction, bulge loop abuts with rotating shaft all the time in rotation process, so as to all the time can be to shaking
Movable property life compensation between centers compensation.
More preferably：The relative end set of the rubber standoff has radially projecting stopper, and the stopper is covered
Cover on the axial end of spring base.
Using such scheme, stopper causes two seal assemblies during mutual abut all the time using rubber as abutting table
Face, so that the first good resealing can be formed between two seal assemblies.
More preferably：The spring base is Z-shaped along the section for crossing axle center.
Using such scheme, Z-type can form preferable covering to rubber standoff, and abutted position is provided for elastic component, and
And Z can form certain pre-deflection after elastic component abutting.
More preferably：The ring portion is closely embedded on the inwall of spring base.
Using such scheme, spring base is formed with rotating ring while fixed rubber standoff and sealed；And rotating ring is played and determined
The effect of the heart.
More preferably：The seal groove of arcuation is provided with the axial end of the rubber standoff, the rotating ring includes
Dynamic head and moving axis, the end of the dynamic head coordinates with seal groove to abut, and the axial end of the moving axis abuts with stationary ring.
Using such scheme, arcuation can with gap path it is longer so that between rotating ring and rubber standoff and spring base
Sealing effectiveness is more preferable, and arcuation can be avoided abutting and interfered, and micro- deformation energy of rubber standoff is kept while abutting and sealing
Power.
More preferably：The diameter of the moving axis is less than dynamic head.
Using such scheme, avoid producing interference between rotating ring and spring base when micro- deformation is produced.
More preferably：The interstage sleeve makes by material of rubber, and interstage sleeve is radially projecting is provided with sealing ring.
Using such scheme so that interstage sleeve and the inner wall of the hole installing where it can form good pre-sealed
More preferably：The side seal groove of indent is provided with the peripheral outer wall of the stationary ring.
Using such scheme so that when interstage sleeve forms pre-sealed with the inner wall of the hole installing where it, interstage sleeve can part
Deform upon and be embedded in side channel, so as to effectively strengthen pre-sealed effect
More preferably：The end seal groove of indent is provided with the axial end of the stationary ring.
Using such scheme, when interstage sleeve is connected to the axial end of mounting hole, interstage sleeve can be deformed upon partly simultaneously
In built-in end sealing groove, so as to effectively strengthen end face seal.
More preferably：The elastic component is spring or bellows.
Using such scheme, the applicable temperature range of bellows is high, and spring Applicable temperature is low, the material price of bellows
Height, spring are relatively relatively inexpensive；Both choose according to specific operating mode.
In summary, the utility model has the advantages that：
Comprehensive tight sealing is formed between each component；And micro- rotation regulation of rubber standoff so that seal is turning
In axle rotation process, the vibration for being capable of countershaft all the time provides between centers compensation；It still can keep fabulous with vibration
Sealing.
Brief description of the drawings
Fig. 1 is the structural representation of the mechanical seal of embodiment 1；
Fig. 2 is the structural representation of the mechanical seal of embodiment 2.
In figure, 1, rubber standoff；2nd, elastic component；3rd, spring base；4th, rotating ring；5th, stationary ring；6th, interstage sleeve；11st, interstage sleeve；12nd, it is close
Sealing groove；13rd, stopper；41st, head is moved；42nd, moving axis；51st, side seal groove；52nd, end seal groove；61st, sealing ring.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
This specific embodiment is only that it is not to limitation of the present utility model, ability to explanation of the present utility model
Field technique personnel can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but
As long as all protected in the scope of protection of the utility model by Patent Law.
Embodiment 1：A kind of bidirectional compensating formula mechanical seal, as shown in figure 1, including elastic component 2 and two symmetrical sealings
Component, elastic component 2 is spring or bellows, to provide the precompression of seal assembly sealing, the applicable temperature range of bellows
Height, spring Applicable temperature is low, and the material price of bellows is high, and spring is relatively relatively inexpensive；Both choose according to specific operating mode.
Seal assembly includes rubber standoff 1, spring base 3, rotating ring 4, stationary ring 5 and interstage sleeve 6.The bore area of rubber standoff 1
The bulge loop 11 to form that axial direction is arcuation is protruded to axle center, bulge loop 11 is the groundwork position for providing micro- rotation compensation.Rubber branch
The outer wall of frame 1 is in step-like, and spring base 3 is Z-shaped along the section for crossing axle center, and spring base 3 is tightly sleeved in the outside of rubber standoff 1
And abutted with the axial end of the step of rubber standoff 1.The relative end set of rubber standoff 1 has radially projecting stopper
13, stopper 13 is covered on the axial end of spring base 3；Elastic component 2 is set in the outside of spring base 3, and is connected to vertically
On spring base 3；When installation, elastic component 2 is pressurized and produces precompression, the end face phase of the rubber standoff 1 on two components
Mutually abut.
The seal groove 12 of arcuation is provided with the axial end of the other end of rubber standoff 1, rotating ring 4 includes dynamic first 41 and moved
Axle 42, dynamic first 41 end coordinates with seal groove 12 to abut, and the close inwall for being embedded in spring base 3.The diameter of moving axis 42 is small
In dynamic first 41, the axial end of moving axis 42 abuts with stationary ring 5.
Interstage sleeve 6 is socketed in the outside of stationary ring 5 and abutted with the axial end of stationary ring 5.Interstage sleeve 6 makes by material of rubber,
Interstage sleeve 6 is radially projecting to be provided with sealing ring 61, and sealing ring 61 abuts with the inwall on mounting structure when installation.
Embodiment 2：As shown in Fig. 2 being with the difference of embodiment 1, indent is provided with the peripheral outer wall of stationary ring 5
Side seal groove 51, side seal groove 51 and bulge loop 11 are in same axial location；The end seal of indent is provided with the axial end of stationary ring 5
Groove 52；When sealing ring 61 forms pre-sealed with inner wall of the hole installing, interstage sleeve 6 can partly deform upon and in embedded side channel, together
When interstage sleeve 6 is connected to the axial end of mounting hole, interstage sleeve 6 can partly deform upon and in built-in end sealing groove 52 sample, with
This strengthens the sealing effectiveness between interstage sleeve 6 and stationary ring 5.
Claims (10)
1. a kind of bidirectional compensating formula mechanical seal, it is characterized in that：Including elastic component (2) and two symmetrical seal assemblies；It is described
Seal assembly includes rubber standoff (1), spring base (3), rotating ring (4), stationary ring (5) and interstage sleeve (6)；The rubber standoff (1)
Bore area protrudes to be formed axially as the bulge loop (11) of arcuation to axle center；The outer wall of the rubber standoff (1) is described in step-like
Spring base (3) is tightly sleeved in the outside of rubber standoff (1) and abutted with the axial end of the step of rubber standoff (1), described
Elastic component (2) is set in the outside of spring base (3), and is connected to vertically on spring base (3)；The rubber standoff (1) it is another
One end and rotating ring (4) axially abut, and the rotating ring (4) abuts with stationary ring (5), interstage sleeve (6) be socketed in the outside of stationary ring (5) and with
The axial end of stationary ring (5) abuts.
2. a kind of bidirectional compensating formula mechanical seal according to claim 1, it is characterized in that：The rubber standoff (1) is relative
End set have radially projecting stopper (13), the stopper (13) is covered on the axial end of spring base (3).
3. a kind of bidirectional compensating formula mechanical seal according to claim 2, it is characterized in that：Axle is crossed on spring base (3) edge
The section of the heart is Z-shaped.
4. a kind of bidirectional compensating formula mechanical seal according to claim 1, it is characterized in that：Rotating ring (4) part is close
It is embedded on the inwall of spring base (3).
5. a kind of bidirectional compensating formula mechanical seal according to claim 4, it is characterized in that：The axle of the rubber standoff (1)
The seal groove (12) of arcuation is provided with to end face, the rotating ring (4) includes dynamic head (41) and moving axis (42), the dynamic head (41)
End and seal groove (12) coordinate and abut, the axial end of the moving axis (42) abuts with stationary ring (5).
6. a kind of bidirectional compensating formula mechanical seal according to claim 5, it is characterized in that：The diameter of the moving axis (42) is small
In dynamic head (41).
7. a kind of bidirectional compensating formula mechanical seal according to claim 1, it is characterized in that：The interstage sleeve (6) using rubber as
Material makes, and interstage sleeve (6) is radially projecting is provided with sealing ring (61).
8. a kind of bidirectional compensating formula mechanical seal according to claim 7, it is characterized in that：The week of the stationary ring (5) is outwards
The side seal groove (51) of indent is provided with wall.
9. a kind of bidirectional compensating formula mechanical seal according to claim 7, it is characterized in that：The axial end of the stationary ring (5)
The end seal groove (52) of indent is provided with face.
10. a kind of bidirectional compensating formula mechanical seal according to claim 1, it is characterized in that：The elastic component (2) is spring
Or bellows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720532357.3U CN206958256U (en) | 2017-05-13 | 2017-05-13 | A kind of bidirectional compensating formula mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720532357.3U CN206958256U (en) | 2017-05-13 | 2017-05-13 | A kind of bidirectional compensating formula mechanical seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206958256U true CN206958256U (en) | 2018-02-02 |
Family
ID=61374808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720532357.3U Active CN206958256U (en) | 2017-05-13 | 2017-05-13 | A kind of bidirectional compensating formula mechanical seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206958256U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115264074A (en) * | 2022-09-28 | 2022-11-01 | 中密控股股份有限公司 | Combined sealing ring applied to large-scale extrusion granulator |
-
2017
- 2017-05-13 CN CN201720532357.3U patent/CN206958256U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115264074A (en) * | 2022-09-28 | 2022-11-01 | 中密控股股份有限公司 | Combined sealing ring applied to large-scale extrusion granulator |
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