CN107906204A - Staged pole shoe replaces the reciprocating sealing device of mixing with lip-type packing - Google Patents
Staged pole shoe replaces the reciprocating sealing device of mixing with lip-type packing Download PDFInfo
- Publication number
- CN107906204A CN107906204A CN201711326991.2A CN201711326991A CN107906204A CN 107906204 A CN107906204 A CN 107906204A CN 201711326991 A CN201711326991 A CN 201711326991A CN 107906204 A CN107906204 A CN 107906204A
- Authority
- CN
- China
- Prior art keywords
- ring
- pole shoe
- flux sleeve
- outer ring
- shell
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
Replace the reciprocating sealing device of mixing with lip-type packing the present invention relates to a kind of staged pole shoe, including axis, shell, outer ring flux sleeve, inner ring flux sleeve, pole shoe ring, magnet ring, the outer ring flux sleeve inner wall is ladder anchor ring, and the diameter of ladder anchor rings at different levels is sequentially reduced from left to right；The inner ring flux sleeve suit and axis, within the scope of the flux sleeve of outer ring；More than one group of pole shoe ring is arranged at intervals on the periphery of the inner ring flux sleeve；It is equipped with magnet ring between each group pole shoe ring, the magnet ring end contact with adjacent pole shoe ring respectively；The axially spaced annular groove I and pole tooth for setting more than one group on the periphery of the pole shoe ring, annular groove I and pole tooth are interspersed.Present invention aim to address the low problem of pressure-resistant performance existing for existing single magnetic source device for sealing magnetic fluid and more magnetic source device for sealing magnetic fluid.
Description
Technical field
The invention belongs to sealing field of mechanical engineering, and in particular to a kind of staged pole shoe replaces mixing with lip-type packing
Reciprocating sealing device.
Background technology
Reciprocation sealing is since technology is still not perfect, and also there are many defects:Magnetic liquid is easy to sew.Back and forth transported in axis
In dynamic, vigorous attached, formation liquid film can occur for partially liq；When magnetic field force is not enough to fetter this tunic, magnetic liquid will be
Enter secret room under differential pressure action, pollute；Operating temperature range is smaller.Because liquid viscosity declines under high temperature, under resistance to pressure
Drop, so refrigeration measure should be coordinated；Voltage endurance capability is caused to reduce by leakage.As a whole, this technological merit is exclusive, and
And as people study its further inquires into, these drawbacks can be addressed.Therefore magnetic liquid reciprocating shaft seal skill
Art has very high utility value and broader development prospect.One of method for improving the pressure-resistant performance of magnetic fluid seal is logical
Cross the quantity of magnetic source in increase magnet fluid sealing magnetic circuit and improve the shape of pole shoe, such as 1 (Publication No. of documents
The patent of CN105003654A) described in sealing device and documents 2 (patent of Publication No. CN206617583U) it is described
Sealing device.Although the relatively common magnetic fluid seal performance of two kinds of sealing devices described in document above is greatly carried
Height, but existing sealing structure is not only additionally operable to the sealing of reciprocal axis available for rotatory sealing, and its sealing performance still has further
The space of raising.
The content of the invention
Replace the reciprocating sealing device of mixing with lip-type packing the object of the present invention is to provide staged pole shoe, so as to solve
The low problem of pressure-resistant performance existing for certainly existing single magnetic source device for sealing magnetic fluid and more magnetic source device for sealing magnetic fluid, subtracts at the same time
Small stress concentration so that the sealing technique is successfully applied in the fields such as engineering machinery reciprocating shaft seal.
Technical scheme is as follows：
The staged pole shoe replaces the reciprocating sealing device of mixing, including axis, shell, outer ring magnetic conduction with lip-type packing
Set, inner ring flux sleeve, pole shoe ring, magnet ring, the axis penetrate by the end wall of shell from the left side and pass through whole shell,
The inner headed face of the end wall of the shell is in contact with the periphery of axis；
The outer ring flux sleeve is arranged in shell, and the outer wall of outer ring flux sleeve is in contact with the inner wall of shell, outer ring flux sleeve
Inner wall be ladder anchor ring, the diameter of ladder anchor rings at different levels is sequentially reduced from left to right；The inner ring flux sleeve is set in axis
On, within the scope of the flux sleeve of outer ring；
More than one group of pole shoe ring is arranged at intervals on the periphery of the inner ring flux sleeve, each group pole shoe ring is led with outer ring respectively
The ladder anchor rings at different levels of magnetosheath correspond；The periphery of each group pole shoe ring radially encloses the ranks at different levels of flux sleeve
Terraced anchor ring extension, gap is left between the ladder anchor rings at different levels of outer ring flux sleeve；
It is equipped with magnet ring between each group pole shoe ring, the magnet ring end contact with adjacent pole shoe ring respectively；
It is axially spaced on the periphery of the pole shoe ring that more than one group of annular groove I and pole tooth be set, annular groove I and
Pole tooth is interspersed；Y-type seal ring I is equipped with the annular groove I；The pole tooth radially encloses the interior of flux sleeve
Disc extends, and leaves gap between the inner headed face of outer ring flux sleeve, magnetic fluid is equipped with the gap.
The inner headed face of the pole shoe ring is equipped with annular groove II, the annular groove II and is equipped with sealing ring.
The inner headed face of the end wall of the shell is equipped with more than one spaced annular groove III, the annular
Y-type seal ring II is equipped with groove III.
The ladder anchor ring of the inner wall of the outer ring flux sleeve is equipped with 3-11 grades.
The magnet ring is axial charging permanent magnet, and corresponding ladder anchor ring is arranged at intervals 2-10.
The adjacent magnet ring magnetic line of force direction is opposite.
Magnet fluid sealing is to produce magnetic field force in seal clearance using permanent magnet magnetic fluid is secured firmly between sealing
In gap, the pressure difference of both sides is resisted, so as to reach the effect of sealing；Lip packing may be used as bar sealing, and to be also used as piston close
Envelope, this seal are type sealings of energizing, and Fluid pressure is automatically loaded on seal lip, so the Fluid pressure sealed
During increase, sealing effect also can guarantee that.
The structure that the present invention is combined by designing a kind of y-type seal ring with magnet fluid sealing, pole shoe outer ring surface open up pole tooth,
Y-type seal ring is installed on the outer ring surface of pole shoe, so as to fulfill a kind of magnet fluid sealing and the combination of rubber seal so that
Seal the increase of voltage endurance capability at double.The present invention is on the basis of single magnet fluid sealing, by setting multistage magnetic source and improving pole
The distribution of y-type seal ring on boots, while the form on permanent magnet is placed on, so that magnet fluid sealing voltage endurance capability increases greatly
By force；The loss of magnetic fluid when the sealing structure of y-type seal ring can reduce seal failure, while maximumlly improve sealing
The service life of circle, convenient production and processing, while add the secondary bearing capacity and self-reparing capability of sealing device.Magnetic current
Body can realize zero leakage function with auxiliary seal ring, and the effect of uniqueness is respectively provided with simultaneously for the dust-proof of sealing ring and lubrication, into
One step improves existing reciprocating sealing device and sealing reliability, expands its range of safety operation.
Brief description of the drawings
Fig. 1 is the structure diagram of sealing device of the present invention;
Each sequence number sign and corresponding title are as follows in figure：
1- axis, 2- shells, 3- outer rings flux sleeve, 4- inner ring flux sleeves, 5- pole shoe rings, 6- magnet rings, 7- annular grooves I, 8-
Pole tooth, 9-Y type sealing ring I, 10- annular groove II, 11- sealing rings, 12- annular grooves III, 13-Y type sealing rings II.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, the staged pole shoe replace with lip-type packing mixing reciprocating sealing device, including axis 1,
Shell 2, outer ring flux sleeve 3, inner ring flux sleeve 4, pole shoe ring 5, magnet ring 6, the axis 1 pass through the end of shell 2 from the left side
Wall penetrates and passes through whole shell 2, and the inner headed face of the end wall of the shell 2 is in contact with the periphery of axis 1；
The outer ring flux sleeve 3 is arranged in shell 2, and the outer wall of outer ring flux sleeve 3 is in contact with the inner wall of shell 2, and outer ring is led
The inner wall of magnetosheath 3 is ladder anchor ring, and the diameter of ladder anchor rings at different levels is sequentially reduced from left to right；4 sets of the inner ring flux sleeve
Loaded on axis 1, within the scope of outer ring flux sleeve 3；
Be arranged at intervals more than one group of pole shoe ring 5 on the periphery of the inner ring flux sleeve 4, each group pole shoe ring 5 respectively with outside
The ladder anchor rings at different levels for enclosing flux sleeve 3 correspond；The periphery of each group pole shoe ring 5 radially encloses flux sleeve 3
Ladder anchor rings at different levels extension, leave gap between the ladder anchor rings at different levels of outer ring flux sleeve 3；
Magnet ring 6 is equipped between each group pole shoe ring 5, end face of the magnet ring 6 respectively with adjacent pole shoe ring 5 connects
Touch；
The axially spaced annular groove I7 and pole tooth 8 for setting more than one group, annular groove on the periphery of the pole shoe ring 5
I7 and pole tooth 8 are interspersed；Y-type seal ring I9 is equipped with the annular groove I7；The pole tooth 8 is radially enclosed and led
The inner headed face extension of magnetosheath 3, leaves gap between the inner headed face of outer ring flux sleeve 3, magnetic fluid is equipped with the gap.
The inner headed face of the pole shoe ring 5, which is equipped with annular groove II10, the annular groove II10, is equipped with sealing
Circle 11.
The inner headed face of the end wall of the shell 2 is equipped with more than one spaced annular groove III 12, described
Y-type seal ring II13 is equipped with annular groove III 12.
The ladder anchor ring of the inner wall of the outer ring flux sleeve 3 is equipped with 3-11 grades.
The magnet ring 6 is axial charging permanent magnet, and corresponding ladder anchor ring is arranged at intervals 2-10.
Adjacent 6 magnetic line of force direction of magnet ring is opposite.
Claims (6)
1. a kind of staged pole shoe replaces the reciprocating sealing device of mixing, including axis with lip-type packing（1）, shell（2）, outer ring
Flux sleeve（3）, inner ring flux sleeve（4）, pole shoe ring（5）, magnet ring（6）, the axis（1）Pass through shell from the left side（2）'s
End wall penetrates and passes through whole shell（2）, the shell（2）End wall inner headed face and axis（1）Periphery be in contact, its
It is characterized in that：
The outer ring flux sleeve（3）Arranged on shell（2）It is interior, outer ring flux sleeve（3）Outer wall and shell（2）Inner wall connect
Touch, outer ring flux sleeve（3）Inner wall be ladder anchor ring, the diameter of ladder anchor rings at different levels is sequentially reduced from left to right；Described is interior
Enclose flux sleeve（4）It is set in axis（1）On, positioned at outer ring flux sleeve（3）Within the scope of；
The inner ring flux sleeve（4）Periphery on be arranged at intervals more than one group of pole shoe ring（5）, each group pole shoe ring（5）Point
Not with outer ring flux sleeve（3）Ladder anchor rings at different levels correspond；The each group pole shoe ring（5）Periphery radially
Enclose flux sleeve（3）Ladder anchor rings at different levels extension, with outer ring flux sleeve（3）Ladder anchor rings at different levels between leave gap；
The each group pole shoe ring（5）Between be equipped with magnet ring（6）, magnet ring（6）Respectively with adjacent pole shoe ring（5）'s
End contact；
The pole shoe ring（5）Periphery on axially spaced more than one group of annular groove I is set（7）With pole tooth（8）, ring
Connected in star I（7）With pole tooth（8）It is interspersed；The annular groove I（7）In be equipped with y-type seal ring I（9）；The pole tooth
（8）Radially enclose flux sleeve（3）Inner headed face extension, with outer ring flux sleeve（3）Inner headed face between leave gap, should between
Magnetic fluid is equipped with gap.
2. staged pole shoe as claimed in claim 1 replaces the reciprocating sealing device of mixing with lip-type packing, its feature exists
In：The pole shoe ring（5）Inner headed face be equipped with annular groove II（10）, the annular groove II（10）It is interior to be equipped with sealing
Circle（11）.
3. staged pole shoe as claimed in claim 1 replaces the reciprocating sealing device of mixing with lip-type packing, its feature exists
In：The shell（2）The inner headed face of end wall be equipped with more than one spaced annular groove III（12）, the ring
Connected in star III（12）It is interior to be equipped with y-type seal ring II（13）.
4. staged pole shoe as claimed in claim 1 replaces the reciprocating sealing device of mixing with lip-type packing, its feature exists
In：The outer ring flux sleeve（3）Inner wall ladder anchor ring be equipped with 3-11 grades.
5. staged pole shoe as claimed in claim 4 replaces the reciprocating sealing device of mixing with lip-type packing, its feature exists
In：The magnet ring（6）For axial charging permanent magnet, 2-10 are arranged at intervals.
6. mixed type reciprocating sealing device as claimed in claim 5, it is characterised in that：The adjacent magnet ring（6）
Magnetic line of force direction is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711326991.2A CN107906204A (en) | 2017-12-13 | 2017-12-13 | Staged pole shoe replaces the reciprocating sealing device of mixing with lip-type packing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711326991.2A CN107906204A (en) | 2017-12-13 | 2017-12-13 | Staged pole shoe replaces the reciprocating sealing device of mixing with lip-type packing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107906204A true CN107906204A (en) | 2018-04-13 |
Family
ID=61854533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711326991.2A Pending CN107906204A (en) | 2017-12-13 | 2017-12-13 | Staged pole shoe replaces the reciprocating sealing device of mixing with lip-type packing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107906204A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185464A (en) * | 2018-10-24 | 2019-01-11 | 广西科技大学 | A kind of magnetic conductive cylinder staged device for sealing magnetic fluid |
| WO2019214194A1 (en) * | 2018-05-08 | 2019-11-14 | 清华大学 | Combined seal of magnetic fluid and lip seal |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4526380A (en) * | 1984-01-27 | 1985-07-02 | Ferrofluidics Corporation | Single pole piece multiple-stage ferrofluid seal apparatus |
| CN101420147A (en) * | 2008-12-08 | 2009-04-29 | 北京交通大学 | Electric main shaft sealing construction for carving, milling and grinding |
| CN101776151A (en) * | 2010-03-08 | 2010-07-14 | 北京交通大学 | Reciprocating shaft magnetic liquid sealing structure |
| CN202091519U (en) * | 2011-05-20 | 2011-12-28 | 北京交通大学 | Magnetic liquid rotating sealing device |
| CN103115152A (en) * | 2013-01-30 | 2013-05-22 | 北京交通大学 | Magnetic fluid and maze alternated type combined sealing |
| CN104455462A (en) * | 2014-09-29 | 2015-03-25 | 北京交通大学 | Magnetic liquid sealing device with labyrinth structure formed in pole shoes |
-
2017
- 2017-12-13 CN CN201711326991.2A patent/CN107906204A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4526380A (en) * | 1984-01-27 | 1985-07-02 | Ferrofluidics Corporation | Single pole piece multiple-stage ferrofluid seal apparatus |
| CN101420147A (en) * | 2008-12-08 | 2009-04-29 | 北京交通大学 | Electric main shaft sealing construction for carving, milling and grinding |
| CN101776151A (en) * | 2010-03-08 | 2010-07-14 | 北京交通大学 | Reciprocating shaft magnetic liquid sealing structure |
| CN202091519U (en) * | 2011-05-20 | 2011-12-28 | 北京交通大学 | Magnetic liquid rotating sealing device |
| CN103115152A (en) * | 2013-01-30 | 2013-05-22 | 北京交通大学 | Magnetic fluid and maze alternated type combined sealing |
| CN104455462A (en) * | 2014-09-29 | 2015-03-25 | 北京交通大学 | Magnetic liquid sealing device with labyrinth structure formed in pole shoes |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019214194A1 (en) * | 2018-05-08 | 2019-11-14 | 清华大学 | Combined seal of magnetic fluid and lip seal |
| CN109185464A (en) * | 2018-10-24 | 2019-01-11 | 广西科技大学 | A kind of magnetic conductive cylinder staged device for sealing magnetic fluid |
| CN109185464B (en) * | 2018-10-24 | 2020-07-17 | 广西科技大学 | Magnetic conduction cylinder stepped magnetic fluid sealing device |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180413 |