CN109505984A - A kind of more magnetic source square device for sealing magnetic fluid - Google Patents
A kind of more magnetic source square device for sealing magnetic fluid Download PDFInfo
- Publication number
- CN109505984A CN109505984A CN201811274645.9A CN201811274645A CN109505984A CN 109505984 A CN109505984 A CN 109505984A CN 201811274645 A CN201811274645 A CN 201811274645A CN 109505984 A CN109505984 A CN 109505984A
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- CN
- China
- Prior art keywords
- ring
- pole shoe
- magnet
- shoe ring
- pole
- 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.)
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Classifications
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- 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
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force
Abstract
The present invention relates to a kind of more magnetic source square device for sealing magnetic fluid, including the right magnet ring of shell, left pole shoe ring, right pole shoe ring, interior pole shoe ring, outer pole shoe ring, the first from left magnet ring, the second from left magnet ring, right two magnet rings.The present invention solves the problems, such as existing sealing device there are shaft bias so that sealing device pressure resistance performance is influenced, so that the sealing technique Successful utilization is in the occasion that large-diameter rotates.
Description
Technical field
The invention belongs to sealing field of mechanical engineering, and in particular to a kind of more magnetic source square device for sealing magnetic fluid.
Background technique
In large-diameter rotary shaft magnetic fluid sealing, due to the influence of the factors such as process and assemble error, vibration, shaft phase
Bias can be occurred for pole shoe, it will reduce the pressure-resistant performance of magnetic fluid sealing, therefore improve wide arc gap magnetic fluid seal
Pressure-resistant performance be one of hot issue of current research.
Reduce the method for influence of the shaft bias to magnetic fluid sealing pressure resistance performance improves magnetic fluid first is that passing through
Sealing structure, the sealing device as described in documents 1 (patent of Publication No. CN105465373A).Although document above
The relatively common magnetic fluid seal performance of the sealing device is greatly improved, but its sealing device is not considered
The influence of Shaft Eccentricity On The Capacity of Magnetic Fluid Seals Against Pressure Difference performance.
Magnet fluid sealing is to generate magnetic field force in seal clearance using permanent magnet magnetic fluid is secured firmly between sealing
In gap, the pressure difference of two sides is resisted, to achieve the effect that sealing.
Summary of the invention
The object of the present invention is to provide a kind of more magnetic source square device for sealing magnetic fluid, deposit to solve existing sealing device
The problem that sealing device pressure resistance performance is influenced in shaft bias, so that the sealing technique Successful utilization was rotated in large-diameter
In occasion.
Technical scheme is as follows:
More magnetic source square device for sealing magnetic fluid, including shell, left pole shoe ring, right pole shoe ring, interior pole shoe ring, outer pole shoe
The right magnet ring of ring, the first from left magnet ring, the second from left magnet ring, right two magnet rings；
The interior pole shoe ring is set on axis, and the outer pole shoe ring is set on the inner wall of shell, interior pole shoe ring and outer pole shoe
Ring corresponds to each other, and there are spacing between the periphery of interior pole shoe ring and the inner headed face of outer pole shoe ring；The outer pole shoe ring it is interior
Disc is equipped with pole tooth I, and the periphery of pole tooth I pole shoe ring radially inward extends, with the periphery of interior pole shoe ring it
Between there are gap, filling magnetic fluid is sealed in the gap；
The left pole shoe ring, right pole shoe ring, outer magnet ring are set on the inner wall of shell, are located at the left and right of outer pole shoe ring
Two sides, are equipped with the second from left magnet ring between the left pole shoe ring and outer pole shoe ring, the right pole shoe ring and outer pole shoe ring it
Between be equipped with right two magnet rings, between the second from left magnet ring, right two magnet rings and the periphery of interior pole shoe ring there are
Spacing；
The left pole shoe ring and right pole shoe ring radially extend to the periphery of axis respectively, between the periphery of axis there are
Away from；
The right side of the left pole shoe ring is corresponded to each other by paraxial place with the left side of interior pole shoe ring；The interior pole shoe ring
Left side is equipped with annular groove I, is equipped with the first from left magnet ring in the annular groove I, the right side of the left pole shoe ring corresponds to ring
The position slot I is equipped with pole tooth II, and the pole tooth II extends along axial direction to the left side of the first from left magnet ring, with the first from left permanent magnet
There are gap between the left side of ring, filling magnetic fluid is sealed in the gap；
The left side of the right pole shoe ring is corresponded to each other by paraxial place with the right side of interior pole shoe ring；The interior pole shoe ring
Right side is equipped with annular groove II, and a right magnet ring is equipped in the annular groove II, and the left side of the right pole shoe ring is corresponding
The position annular groove II be equipped with pole tooth III, the pole tooth III along axial direction to the right a magnet ring right side extend, with the right side one
There are gap between the right side of magnet ring, filling magnetic fluid is sealed in the gap.
The axial length of the outer pole shoe ring is less than the axial length of interior pole shoe ring.
The quantity for the pole tooth II that the right side of the left pole shoe ring is equipped with is 2 ~ 5；
The quantity for the pole tooth III that the left side of the right pole shoe ring is equipped with is 2 ~ 5.
Quantity of the inner headed face of the outer pole shoe ring equipped with pole tooth I is 1 ~ 10.
The size in the gap between the pole tooth I and the periphery of interior pole shoe ring is 0.05 ~ 3mm；The pole tooth II
The size in the gap between the left side of the first from left magnet ring is 0.05 ~ 3mm；The pole tooth III and a right magnet ring
Right side between gap size be 0.05 ~ 3mm.
The first from left magnet ring, the second from left magnet ring, a right magnet ring, right two magnet rings are axial charging
Type magnet ring；
The first from left magnet ring, the magnetic line of force of the second from left magnet ring are contrary；One magnet ring of the right side, the right side two are forever
The magnetic line of force of magnet ring is contrary；The first from left magnet ring is contrary with the right magnetic line of force of a magnet ring；It is described
The second from left magnet ring it is contrary with the right magnetic line of force of two magnet rings.
The periphery of the left pole shoe ring, right pole shoe ring is equipped with annular groove III, is equipped with sealing in the annular groove III
Circle.
More magnetic source square device for sealing magnetic fluid further include left magnetism-isolating loop, right magnetism-isolating loop；The left magnetism-isolating loop
It is set to right magnetism-isolating loop on the inner wall of shell, left magnetism-isolating loop is located at the left side of left pole shoe, and right magnetism-isolating loop is located at the right side of right pole shoe.
More magnetic source square device for sealing magnetic fluid, further include left bearing and right bearing, the left bearing and the right side
Bearing is set on axis, and the left bearing is set on the left of left magnetism-isolating loop, is contacted with left magnetism-isolating loop；The right bearing is set
In the right side of right magnetism-isolating loop, contacted with right magnetism-isolating loop.
The present invention by design square pole shoe, by pole tooth design left pole shoe, right pole shoe in the radial direction with outer pole shoe
On inner headed face axial direction, and permanent magnet is installed corresponding to the tooth of pole on the both ends of interior pole shoe and left and right pole shoe, makes left pole
Boots and right pole shoe and interior pole shoe form radial seal space, and outer pole shoe and interior pole shoe form axial seal space, while in left pole
Magnetic fluid is injected in gap between boots, right pole shoe, outer pole shoe and interior pole shoe, to realize that a kind of double magnetic source square magnetic fluid is close
Seal apparatus.It is close to make that the present invention overcomes existing sealing device shaft bias in the case where high-speed overload to lead to magnetic current bulk diffusion
The problem of sealing property decline, is designed using square pole shoe structure, and magnetic current bulk diffusion is to sealing caused by reducing because of shaft bias
The influence of device pressure resistance performance improves the voltage endurance capability and sealing reliability of magnetic fluid seal under the conditions of large-diameter, expands
Its range of safety operation.
The present invention passes through the magnetic line of force of the first from left magnet ring, the second from left magnet ring, a right magnet ring, right two magnet rings
Direction setting layout, forms the flux loop of multilayer closure, enables magnetic fluid is more firm in corresponding gap to deposit
?.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of more magnetic source square device for sealing magnetic fluid provided in an embodiment of the present invention；
Each serial number mark and corresponding title are as follows in figure:
1- axis, 2- shell, the left pole shoe ring of 3-, the right pole shoe ring of 4-, pole shoe ring in 5-, the outer pole shoe ring of 6-, 7- the first from left magnet ring, 8-
The second from left magnet ring, one magnet ring of the right side 9-, the right side 10- two magnet rings, the pole the 11- pole tooth I, 12- pole tooth II, 13- tooth III, 14-
The left magnetism-isolating loop of sealing ring, 15-, the right magnetism-isolating loop of 16-, 17- left bearing, 18- right bearing, 19- end cap.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
As shown in Figure 1, more magnetic source square device for sealing magnetic fluid, including shell 2, left pole shoe ring 3, right pole shoe ring
4, the right magnet ring 9 of interior pole shoe ring 5, outer pole shoe ring 6, the first from left magnet ring 7, the second from left magnet ring 8, right two magnet rings
10；
The interior pole shoe ring 5 is set on axis 1, and the outer pole shoe ring 6 is set on the inner wall of shell 2, interior pole shoe ring 5 and outer
Pole shoe ring 6 corresponds to each other, and there are spacing between the periphery of interior pole shoe ring 5 and the inner headed face of outer pole shoe ring 6；The outer pole shoe
The inner headed face of ring 6 be equipped with pole tooth I11, the pole tooth I11 radially inward pole shoe ring 5 periphery extend, with interior pole shoe
There are gap between the periphery of ring 5, filling magnetic fluid is sealed in the gap；
The left pole shoe ring 3, right pole shoe ring 4, outer magnet ring 8 are set on the inner wall of shell 2, are located at outer pole shoe ring 6
The left and right sides, between the left pole shoe ring 3 and outer pole shoe ring 6 be equipped with the second from left magnet ring 8, the right pole shoe ring 4 with
Right two magnet rings 10, the second from left magnet ring 8, two magnet ring 10 of the right side and interior pole shoe ring 5 are equipped between outer pole shoe ring 6
Periphery between there are spacing；
The left pole shoe ring 3 and right pole shoe ring 4 radially extend to the periphery of axis 1 respectively, stay between the periphery of axis 1
There is spacing；
The right side of the left pole shoe ring 3 corresponds to each other at paraxial 1 with the left side of interior pole shoe ring 5；The interior pole shoe
The left side of ring 5 is equipped with annular groove I, is equipped with the first from left magnet ring 7, the right side of the left pole shoe ring 3 in the annular groove I
The corresponding position annular groove I is equipped with pole tooth II12, and the pole tooth II12 extends along axial direction to the left side of the first from left magnet ring 7,
There are gap between the left side of the first from left magnet ring 7, filling magnetic fluid is sealed in the gap；
The left side of the right pole shoe ring 4 corresponds to each other at paraxial 1 with the right side of interior pole shoe ring 5；The interior pole shoe
The right side of ring 5 is equipped with annular groove II, and a right magnet ring 9, the left end of the right pole shoe ring 4 are equipped in the annular groove II
Face corresponds to the position annular groove II equipped with pole tooth III13, and the pole tooth III13 is along the right side of an axial direction magnet ring 9 to the right
Extend, there are gap between the right side of a right magnet ring 9, filling magnetic fluid is sealed in the gap.
The axial length of the outer pole shoe ring 6 is less than the axial length of interior pole shoe ring 5.
The quantity for the pole tooth II12 that the right side of the left pole shoe ring 3 is equipped with is 2 ~ 5；
The quantity for the pole tooth III13 that the left side of the right pole shoe ring 4 is equipped with is 2 ~ 5.
Quantity of the inner headed face of the outer pole shoe ring 6 equipped with pole tooth I11 is 1 ~ 10.
The size in the gap between the pole tooth I11 and the periphery of interior pole shoe ring 5 is 0.05 ~ 3mm；The pole tooth
The size in the gap between II12 and the left side of the first from left magnet ring 7 is 0.05 ~ 3mm；The pole tooth III13 and the right side one is forever
The size in the gap between the right side of magnet ring 9 is 0.05 ~ 3mm.
The first from left magnet ring 7, the second from left magnet ring 8, a right magnet ring 9, right two magnet rings 10 are axis
To the type magnet ring that magnetizes；
The first from left magnet ring 7, the magnetic line of force of the second from left magnet ring 8 are contrary；It is one magnet ring 9 of the right side, right
The magnetic line of force of two magnet rings 10 is contrary；The magnetic line of force direction phase of the first from left magnet ring 7 and a right magnet ring 9
Instead；The second from left magnet ring 8 is contrary with the right magnetic line of force of two magnet rings 10.
The periphery of the left pole shoe ring 3, right pole shoe ring 4 is equipped with annular groove III, is equipped in the annular groove III close
Seal 14.
More magnetic source square device for sealing magnetic fluid further include left magnetism-isolating loop 15, right magnetism-isolating loop 16；It is described it is left every
Magnet ring 15 and right magnetism-isolating loop 16 are set on the inner wall of shell 2, and left magnetism-isolating loop 15 is located at the left side of magnetic guiding loop 6, right magnetism-isolating loop 16
In the right side of magnetic guiding loop 6.
More magnetic source square device for sealing magnetic fluid further include left bearing 17 and right bearing 18, the left bearing
17 and right bearing 18 be set on axis 1, the left bearing 17 is set to left 15 left side of magnetism-isolating loop, connects with left magnetism-isolating loop 15
Touching；The right bearing 18 is set to the right side of right magnetism-isolating loop 16, contacts with right magnetism-isolating loop 16.
Claims (10)
1. a kind of more magnetic source square device for sealing magnetic fluid, including shell (2), left pole shoe ring (3), right pole shoe ring (4), interior pole shoe
The right magnet ring (9) of ring (5), outer pole shoe ring (6), the first from left magnet ring (7), the second from left magnet ring (8), right two magnet rings
(10)；It is characterized by:
The interior pole shoe ring (5) is set on axis (1), and the outer pole shoe ring (6) is set on the inner wall of shell (2), interior pole
Boots ring (5) and outer pole shoe ring (6) correspond to each other, between the periphery of interior pole shoe ring (5) and the inner headed face of outer pole shoe ring (6) there are
Spacing；The inner headed face of the outer pole shoe ring (6) is equipped with pole tooth I(11), the pole tooth I(11) pole shoe ring radially inward
(5) periphery extends, and there are gap between the periphery of interior pole shoe ring (5), filling magnetic fluid is sealed in the gap；
The left pole shoe ring (3), right pole shoe ring (4), the second from left magnet ring (8), right two magnet rings (10) are set to shell (2)
Inner wall on, be located at the left and right sides of outer pole shoe ring (6), be equipped between the left pole shoe ring (3) and outer pole shoe ring (6)
The second from left magnet ring (8) is equipped with right two magnet rings (10) between the right pole shoe ring (4) and outer pole shoe ring (6), described
There are spacing between the second from left magnet ring (8), right two magnet rings (10) and the periphery of interior pole shoe ring (5)；
The left pole shoe ring (3) and right pole shoe ring (4) radially extend to the periphery of axis (1) respectively, the outer circle with axis (1)
There are spacing between face；
The right side of the left pole shoe ring (3) corresponds to each other at paraxial (1) with the left side of interior pole shoe ring (5)；Described
The left side of interior pole shoe ring (5) is equipped with annular groove I, is equipped with the first from left magnet ring (7) in the annular groove I, the left pole shoe
The right side of ring (3) corresponds to the position annular groove I equipped with pole tooth II(12), the pole tooth II(12) along axial direction to the first from left permanent magnet
The left side of ring (7) extends, there are gap between the left side of the first from left magnet ring (7), in the gap filling magnetic fluid into
Row sealing；
The left side of the right pole shoe ring (4) corresponds to each other at paraxial (1) with the right side of interior pole shoe ring (5)；Described
The right side of interior pole shoe ring (5) is equipped with annular groove II, and a right magnet ring (9), the right pole are equipped in the annular groove II
The left side of boots ring (4) corresponds to the position annular groove II equipped with pole tooth III(13), the pole tooth III(13) along axial direction to the right one
The right side of magnet ring (9) extends, and there are gap between the right side of a right magnet ring (9), fills magnetic in the gap
Fluid is sealed.
2. more magnetic source square device for sealing magnetic fluid as described in claim 1, it is characterised in that: the outer pole shoe ring (6)
Axial length be less than interior pole shoe ring (5) axial length.
3. more magnetic source square device for sealing magnetic fluid as described in claim 1, it is characterised in that: the left pole shoe ring (3)
The pole tooth II(12 that is equipped with of right side) quantity be 2 ~ 5.
4. more magnetic source square device for sealing magnetic fluid as described in claim 1, it is characterised in that: the right pole shoe ring (4)
The pole tooth III(13 that is equipped with of left side) quantity be 2 ~ 5.
5. more magnetic source square device for sealing magnetic fluid as described in claim 1, it is characterised in that: the outer pole shoe ring (6)
Inner headed face be equipped with pole tooth I(11) quantity be 1 ~ 10.
6. more magnetic source square device for sealing magnetic fluid as described in claim 1, it is characterised in that: the pole tooth I(11) with
The size in the gap between the periphery of interior pole shoe ring (5) is 0.05 ~ 3mm；The pole tooth II(12) and the first from left magnet ring
(7) size in the gap between left side is 0.05 ~ 3mm；The pole tooth III(13) right side with a right magnet ring (9)
The size in the gap between end face is 0.05 ~ 3mm.
7. more magnetic source square device for sealing magnetic fluid as described in claim 1, it is characterised in that:
The first from left magnet ring (7), the second from left magnet ring (8), a right magnet ring (9), right two magnet rings (10) are equal
For axial charging type magnet ring；
The first from left magnet ring (7), the magnetic line of force of the second from left magnet ring (8) are contrary；One magnet ring of the right side
(9), the magnetic line of force of right two magnet rings (10) is contrary；The first from left magnet ring (7) and a right magnet ring (9)
The magnetic line of force is contrary；The magnetic line of force of the second from left magnet ring (8) and right two magnet rings (10) is contrary.
8. more magnetic source square device for sealing magnetic fluid as described in claim 1, it is characterised in that: the left pole shoe ring (3),
The periphery of right pole shoe ring (4) is equipped with annular groove III, is equipped with sealing ring (14) in the annular groove III.
9. more magnetic source square device for sealing magnetic fluid as described in claim 1, it is characterised in that: further include left magnetism-isolating loop
(15), right magnetism-isolating loop (16)；The left magnetism-isolating loop (15) and right magnetism-isolating loop (16) is set on the inner wall of shell (2), and a left side is every magnetic
Ring (15) is located at the left side of left pole shoe (3), and right magnetism-isolating loop (16) is located at the right side of right pole shoe (4).
10. more magnetic source square device for sealing magnetic fluid as described in claim 1, it is characterised in that: further include left bearing (17)
With right bearing (18), the left bearing (17) and right bearing (18) are set on axis (1), and the left bearing (17) is set
On the left of left magnetism-isolating loop (15), contacted with left magnetism-isolating loop (15)；The right bearing (18) is set to the right side of right magnetism-isolating loop (16),
It is contacted with right magnetism-isolating loop (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811274645.9A CN109505984B (en) | 2018-10-30 | 2018-10-30 | Square magnetic fluid sealing device with multiple magnetic sources |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811274645.9A CN109505984B (en) | 2018-10-30 | 2018-10-30 | Square magnetic fluid sealing device with multiple magnetic sources |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109505984A true CN109505984A (en) | 2019-03-22 |
| CN109505984B CN109505984B (en) | 2020-11-27 |
Family
ID=65747110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811274645.9A Active CN109505984B (en) | 2018-10-30 | 2018-10-30 | Square magnetic fluid sealing device with multiple magnetic sources |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109505984B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007258573A (en) * | 2006-03-24 | 2007-10-04 | Eagle Ind Co Ltd | Magnetic fluid sealing device |
| CN205824188U (en) * | 2016-07-28 | 2016-12-21 | 广西科技大学 | A kind of magnetic fluid seal device of magnetic source tandem type |
| CN107882999A (en) * | 2017-12-13 | 2018-04-06 | 广西科技大学 | A kind of embedded device for sealing magnetic fluid of magnetic source |
| CN107956882A (en) * | 2017-12-13 | 2018-04-24 | 广西科技大学 | A kind of multistage disk device for sealing magnetic fluid |
| CN207554797U (en) * | 2017-12-14 | 2018-06-29 | 广西科技大学 | A kind of telescopic device for sealing magnetic fluid of mixed type |
| CN207584031U (en) * | 2017-12-13 | 2018-07-06 | 广西科技大学 | A kind of embedded device for sealing magnetic fluid of magnetic source |
| CN207634699U (en) * | 2017-12-14 | 2018-07-20 | 广西科技大学 | A kind of radially type labyrinth type device for sealing magnetic fluid |
-
2018
- 2018-10-30 CN CN201811274645.9A patent/CN109505984B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007258573A (en) * | 2006-03-24 | 2007-10-04 | Eagle Ind Co Ltd | Magnetic fluid sealing device |
| CN205824188U (en) * | 2016-07-28 | 2016-12-21 | 广西科技大学 | A kind of magnetic fluid seal device of magnetic source tandem type |
| CN107882999A (en) * | 2017-12-13 | 2018-04-06 | 广西科技大学 | A kind of embedded device for sealing magnetic fluid of magnetic source |
| CN107956882A (en) * | 2017-12-13 | 2018-04-24 | 广西科技大学 | A kind of multistage disk device for sealing magnetic fluid |
| CN207584031U (en) * | 2017-12-13 | 2018-07-06 | 广西科技大学 | A kind of embedded device for sealing magnetic fluid of magnetic source |
| CN207554797U (en) * | 2017-12-14 | 2018-06-29 | 广西科技大学 | A kind of telescopic device for sealing magnetic fluid of mixed type |
| CN207634699U (en) * | 2017-12-14 | 2018-07-20 | 广西科技大学 | A kind of radially type labyrinth type device for sealing magnetic fluid |
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| Publication number | Publication date |
|---|---|
| CN109505984B (en) | 2020-11-27 |
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