CN205841774U - A kind of zigzag tooth end-surface type magnetic fluid seal device - Google Patents
A kind of zigzag tooth end-surface type magnetic fluid seal device Download PDFInfo
- Publication number
- CN205841774U CN205841774U CN201620809859.1U CN201620809859U CN205841774U CN 205841774 U CN205841774 U CN 205841774U CN 201620809859 U CN201620809859 U CN 201620809859U CN 205841774 U CN205841774 U CN 205841774U
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- China
- Prior art keywords
- annular groove
- pole
- tooth
- pole shoe
- pole tooth
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- 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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Abstract
This utility model relates to sealing field of mechanical engineering, it is specifically related to a kind of zigzag tooth end-surface type magnetic fluid seal device, including left pole shoe, middle pole shoe, right pole shoe, permanent magnet, pole tooth I and annular groove I is offered in the left side of described middle pole shoe, and pole tooth II and annular groove II is offered in right side；Pole tooth III and annular groove III is offered in the right side of left pole shoe, pole tooth IV and annular groove IV are offered in the left side of right pole shoe, the pole tooth I on middle pole shoe is made to stretch in the annular groove III of left pole shoe, the pole tooth III of left pole shoe stretches in the annular groove I of middle pole shoe, the pole tooth II of middle pole shoe stretches in the annular groove IV of right pole shoe, and the pole tooth IV of right pole shoe stretches in the annular groove II of middle pole shoe；Pressing close to be respectively provided with at axle ladder recess on the left side of left pole shoe and the right side of right pole shoe, described permanent magnet is contained in ladder recess.Sealing device good sealing effect of the present utility model, sealing property is stable.
Description
Technical field
This utility model belongs to sealing field of mechanical engineering, is specifically related to a kind of zigzag tooth end-surface type magnetic fluid seal dress
Put.
Background technology
Magnetic fluid seal is pressure, and performance significantly reduces along with the increase of seal clearance.Therefore wide arc gap magnetic flow is improved
The pressure performance that body seals is one of hot issue of current research.Improve the side of the wide arc gap pressure performance of magnetic fluid-tight
One of method is by improving magnetic fluid seal structure.Existing magnetic fluid seal device by arranging labyrinth seal structure,
The sealing property of more traditional sealing structure is greatly improved, but owing to arranging axial seal ring, rotating shaft is at rotation process
The circular runout of middle generation is bigger on the impact of sealing property；Further, since seal structure to arrange the defect of existence, cause sealing
During inefficacy, the leakage rate of magnetic fluid is big, and pressure performance is relatively low, it is impossible to meet the requirement of the operating mode such as wide arc gap and high speed.
Summary of the invention
This utility model aims to solve the problem that existing sealing device magnetic fluid leakage rate is big, the difficulty that sealing property stability is relatively low
Topic, a kind of easy accessibility of design, the zigzag tooth end-surface type magnetic fluid seal device that sealing property is reliable and stable.
The technical solution of the utility model is as follows:
A kind of zigzag tooth end-surface type magnetic fluid seal device, including ring-type left pole shoe, middle pole shoe, right pole shoe, forever
Magnet, described middle pole shoe is set on axle, and pole tooth I is offered, between adjacent two pole tooth I in the interval, left side of middle pole shoe
Offer annular groove I；On right side, pole tooth II is offered at interval, offers annular groove II between adjacent two pole tooth II；
Described left pole shoe and right pole shoe are respectively arranged on the axle of the middle pole shoe left and right sides；The right-hand member of described left pole shoe
Pole tooth III and annular groove III is set on face；Described pole tooth III correspondence annular groove I is arranged, and stretches into annular groove I
In, bottom the right side of pole tooth III and annular groove I between leave gap, in annular groove I inject sealing medium, at magnetic
Under the effect of field force, sealing medium is adsorbed on the right side of pole tooth III；Described annular groove III correspondence pole tooth I is arranged,
Pole tooth I stretches in annular groove III, leaves gap between left side and the bottom of annular groove III of pole tooth I, recessed in annular
Injecting sealing medium in groove III, under the action of a magnetic force, sealing medium is adsorbed on the left side of pole tooth I；
Pole tooth IV and annular groove IV are set on the left side of described right pole shoe, the corresponding annular groove of described pole tooth IV
II is arranged, and stretches in annular groove II, and gap is left, at annular groove in the bottom of the left side of pole tooth IV and annular groove II
Injecting sealing medium in II, under the action of a magnetic force, sealing medium is adsorbed on the left side of pole tooth IV；Described annular is recessed
The corresponding pole tooth II of groove IV is arranged, and pole tooth II stretches in annular groove IV, the right side of pole tooth II and the bottom of annular groove IV it
Between leave gap, in annular groove IV inject sealing medium, under the action of a magnetic force, sealing medium is adsorbed in pole tooth II's
On right side；
Press close to be respectively provided with at axle ladder recess on the left side of described left pole shoe and the right side of right pole shoe, described
Permanent magnet is contained in ladder recess.
Described pole tooth I and pole tooth II is the most symmetrical, and described annular groove I and annular groove II is the most symmetrical.
Sealing device described in the utility model also includes that jump ring, magnetism-isolating loop, shell, bearing, described jump ring are installed on
On the axle of the middle pole shoe left and right sides, and it is close to the left and right end face of middle pole shoe；The left side of left pole shoe and the right side of right pole shoe are divided
Magnetism-isolating loop and bearing are installed the most successively.
Described magnetism-isolating loop includes outer magnetism-isolating loop and interior magnetism-isolating loop, and described outer magnetism-isolating loop is installed on the inwall of shell, interior
Magnetism-isolating loop is installed on axle, there is gap between inwall and the outer wall of interior magnetism-isolating loop of outer magnetism-isolating loop, outer magnetism-isolating loop and interior every magnetic
The axial length of ring is equal.
Described permanent magnet is radial magnetizing type permanent magnet, the permanent magnet on left pole shoe and the permanent magnet polarity on right pole shoe
On the contrary.
It is respectively provided with annular groove V on described left pole shoe and the periphery of right pole shoe.
The quantity of described pole tooth I is 2-8, and the radial height of pole tooth I is 0.2-7mm；The quantity of annular groove I is 1-
7, the axial depth of annular groove I is 1-25mm, radial height 0.8-10mm；Described pole tooth II and the quantity of pole tooth I, chi
Very little identical, annular groove II with the quantity of annular groove I, equivalently-sized.
The quantity of described pole tooth III is 2-8, and the radial height of pole tooth III is 0.2-7mm；The number of annular groove III
Amount is 2-8, and its axial depth is 1-25mm, and radial height is 0.8 ~ 10mm；The quantity of described pole tooth IV and pole tooth III,
Equivalently-sized, annular groove IV and the quantity of annular groove III, equivalently-sized.
Gap between left side and the bottom of annular groove III of described pole tooth I is 0.1-5mm；The right side of pole tooth II
Gap between the bottom of end face and annular groove IV is 0.1-5mm.
The installation process of sealing device of the present utility model is as follows: middle pole shoe is arranged on the middle part of axle, at dynode
Injecting sealing medium in the annular groove I of boots left side and the annular groove II of right side, sealing medium is magnetic fluid；On a left side
It is respectively mounted rubber ring, in the trapezoidal recess on left pole shoe and right pole shoe in the annular groove V of pole shoe and right pole shoe periphery
It is respectively mounted permanent magnet；Sealing medium is injected, in the annular of right pole shoe left side in the annular groove III of left pole shoe right side
Injecting sealing medium in groove IV, this sealing medium is magnetic fluid；In the left side of middle pole shoe, jump ring, Zuo Ji are installed successively
Boots, magnetism-isolating loop, bearing, install jump ring, right pole shoe, magnetism-isolating loop, bearing successively on the right side of middle pole shoe, makes on middle pole shoe
Pole tooth I stretches in annular groove III, and pole tooth II stretches in annular groove IV, makes the pole tooth III on left pole shoe stretch into annular groove
In I, the pole tooth IV on right pole shoe stretches in annular groove II, installs shell on axle, and jacket is lived in state and is installed on axle
Part, the inwall of shell left end is close to be positioned at the bearing in left side, and the right-hand member of shell is attached by screw thread with end cap, end cap pressure
Tightly it is positioned at the outer ring of the bearing on right side.
This utility model is respectively provided with pole tooth and annular groove on the middle ultra-Left pole shoe of pole shoe and right pole shoe, makes middle pole shoe
Pole tooth be positioned at left pole shoe and the annular groove of right pole shoe, make the pole tooth of left pole shoe and right pole shoe be positioned at the annular of middle pole shoe
In groove, and injecting magnetic fluid respectively in annular groove, form the sealing structure of zigzag tooth end-surface type, this structure is significantly
The loss of magnetic fluid when reducing seal failure, improves the voltage endurance capability of magnetic fluid seal under the conditions of wide arc gap, expands
Its range of safety operation；The end face of left pole shoe and right pole shoe is installed permanent magnet, only need to be from magnetic fluid seal structure
Two ends carry out, for magnetic, can reach the purpose saving magnetic energy；Simple in construction of the present utility model, easy accessibility.
Accompanying drawing explanation
Fig. 1 is the structural representation of sealing device described in the utility model
In figure, each sequence number indicates and the title of correspondence is as follows: 1-axle, 2-shell, 3-bearing, 4-ladder recess, the left pole of 5-
Boots, pole shoe in the middle of 51-pole tooth III, 52-annular groove III, 6-, 61-pole tooth I, 62-annular groove I, 63-pole tooth II, 64 rings
Connected in star II, 7 right pole shoes, 71-pole tooth IV, 72-annular groove IV, the outer magnetism-isolating loop of 8-, magnetism-isolating loop in 9-, 10 end caps, 11-permanent magnetism
Body, 12-jump ring, 13-annular groove V.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings.
A kind of zigzag tooth end-surface type magnetic fluid seal device as shown in Figure 1, including ring-type left pole shoe 5, dynode
Boots 6, right pole shoe 7, permanent magnet 11, described middle pole shoe 6 is set on axle 1, and pole tooth is offered at the interval, left side of middle pole shoe 6
I61, offers annular groove I62 between adjacent two pole tooth I61；On right side, pole tooth II63, adjacent two pole teeth are offered in interval
Annular groove II64 is offered between II63；
Described left pole shoe 5 and right pole shoe 7 are respectively arranged on the axle 1 of middle pole shoe 6 left and right sides；Described left pole shoe 5
Right side on pole tooth III51 and annular groove III52 is set；Described pole tooth III51 correspondence annular groove I62 is arranged, and
Stretch in annular groove I62, bottom the right side of pole tooth III51 and annular groove I62 between leave gap；Described annular is recessed
Groove III52 correspondence pole tooth I61 is arranged, and pole tooth I61 stretches in annular groove III52, the left side of pole tooth I61 and annular groove
Gap is left between the bottom of III52；
Arranging pole tooth IV 71 and annular groove IV 72 on the left side of described right pole shoe 7, described pole tooth IV 71 is corresponding
Annular groove II64 is arranged, and stretches in annular groove II64, and the bottom of the left side of pole tooth IV 71 and annular groove II64 is stayed
There is gap；The corresponding pole tooth II63 of described annular groove IV 72 is arranged, and pole tooth II63 stretches in annular groove IV 72, pole tooth II63
Right side and the bottom of annular groove IV 72 between leave gap；
Press close at axle 1, to be respectively provided with ladder recess 4 on the left side of described left pole shoe 5 and the right side of right pole shoe 7, institute
The permanent magnet 11 stated is contained in ladder recess 4.
Described pole tooth I61 and pole tooth II63 is the most symmetrical, described annular groove I62 and annular groove II64 difference one
One is symmetrical.
Sealing device described in the utility model also includes jump ring 12, magnetism-isolating loop, shell 2, bearing 3, described jump ring 12
It is installed on the axle 1 of middle pole shoe 6 left and right sides, and is close to the left and right end face of middle pole shoe 6；The left side of left pole shoe 5 and right pole
The right side of boots 7 installs magnetism-isolating loop and bearing 3 the most successively.
Described magnetism-isolating loop includes that outer magnetism-isolating loop 8 and interior magnetism-isolating loop 9, described outer magnetism-isolating loop 8 are installed on the interior of shell 2
Wall, interior magnetism-isolating loop 9 is installed on axle 1, there is gap, outer magnetism-isolating loop between inwall and the outer wall of interior magnetism-isolating loop 9 of outer magnetism-isolating loop 8
8 and the axial length of interior magnetism-isolating loop 9 equal.
Described permanent magnet 11 is radial magnetizing type permanent magnet, the permanent magnet on left pole shoe 5 and the permanent magnet on right pole shoe 7
Opposite polarity.
It is respectively provided with annular groove V 13 on described left pole shoe 5 and the periphery of right pole shoe 7.
The quantity of described pole tooth I61 is 2-8, and the radial height of pole tooth I61 is 0.2-7mm；The number of annular groove I62
Amount is 1-7, and the axial depth of annular groove I62 is 1-25mm, radial height 0.8-10mm；Described pole tooth II63 and pole tooth
The quantity of I61, equivalently-sized, annular groove II64 with the quantity of annular groove I62, equivalently-sized.
The quantity of described pole tooth III51 is 2-8, and the radial height of pole tooth III51 is 0.2-7mm；Annular groove
The quantity of III52 is 2-8, and its axial depth is 1-25mm, and radial height is 0.8 ~ 10mm；Described pole tooth IV 71 and pole tooth
The quantity of III51, equivalently-sized, annular groove IV 72 and the quantity of annular groove III52, equivalently-sized.
Gap between left side and the bottom of annular groove III52 of described pole tooth I61 is 0.1-5mm；Pole tooth
Gap between right side and the bottom of annular groove IV 72 of II63 is 0.1-5mm.
The installation process of sealing device of the present utility model is as follows: middle pole shoe 6 is arranged on the middle part of axle 1, in centre
Injecting sealing medium in the annular groove I62 of pole shoe 6 left side and the annular groove II64 of right side, sealing medium is magnetic flow
Body；It is respectively mounted rubber ring, at left pole shoe 5 and right pole shoe 7 in the annular groove V 13 of left pole shoe 5 and right pole shoe 7 periphery
On trapezoidal recess 4 in be respectively mounted permanent magnet 11；Sealing medium is injected in the annular groove III52 of left pole shoe 5 right side,
Injecting sealing medium in the annular groove IV 72 of right pole shoe 7 left side, this sealing medium is magnetic fluid；At middle pole shoe 6
Left side jump ring 12, left pole shoe 5, magnetism-isolating loop, bearing 3 are installed successively, jump ring 12, right is installed successively on the right side of middle pole shoe 6
Pole shoe 7, magnetism-isolating loop, bearing 3, make the pole tooth I61 on middle pole shoe 6 stretch in annular groove III52, and pole tooth II63 stretches into annular
In groove IV 72, making the pole tooth III51 on left pole shoe 5 stretch in annular groove I62, the pole tooth IV 71 on right pole shoe 7 stretches into ring
In connected in star II64, installing shell 2 on axle 1, shell 2 covers the above-mentioned part being installed on axle 1, the inwall of shell 2 left end
Being close to be positioned at the bearing 3 in left side, the right-hand member of shell 2 is attached by screw thread with end cap 10, and end cap 10 compresses and is positioned at right side
The outer ring of bearing 3.
Claims (10)
1. a zigzag tooth end-surface type magnetic fluid seal device, including ring-type left pole shoe (5), middle pole shoe (6), right pole shoe
(7), permanent magnet (11), it is characterised in that:
Described middle pole shoe (6) is set on axle (1), and pole tooth I(61 is offered at the interval, left side of middle pole shoe (6)), adjacent
Two pole tooth I(61) between offer annular groove I(62)；On right side, pole tooth II(63 is offered at interval), adjacent two pole tooth II
(63) annular groove II(64 is offered between)；
Described left pole shoe (5) and right pole shoe (7) are respectively arranged on the axle (1) of middle pole shoe (6) left and right sides；Described left pole
Pole tooth III(51 is set on the right side of boots (5)) and annular groove III(52)；Described pole tooth III(51) corresponding annular groove
I(62) arrange, and stretch into annular groove I(62) in, pole tooth III(51) right side and annular groove I(62) bottom between stay
There is gap；Described annular groove III(52) corresponding pole tooth I(61) arrange, pole tooth I(61) stretch into annular groove III(52) in,
Pole tooth I(61) left side and annular groove III(52) bottom between leave gap；
Pole tooth IV (71) and annular groove IV (72), described pole tooth IV (71) are set on the left side of described right pole shoe (7)
Corresponding annular groove II(64) arrange, and stretch into annular groove II(64) in, the left side of pole tooth IV (71) and annular groove II
(64) gap is left in bottom；The corresponding pole tooth II(63 of described annular groove IV (72)) arrange, pole tooth II(63) stretch into annular
In groove IV (72), pole tooth II(63) right side and the bottom of annular groove IV (72) between leave gap；
Press close to axle (1) place on the left side of described left pole shoe (5) and the right side of right pole shoe (7) and be respectively provided with ladder recess
(4), described permanent magnet (11) is contained in ladder recess (4).
2. zigzag tooth end-surface type magnetic fluid seal device as claimed in claim 1, it is characterised in that: described pole tooth I
(61) and pole tooth II(63) symmetrical one by one, described annular groove I(62) and annular groove II(64) symmetry the most one by one.
3. zigzag tooth end-surface type magnetic fluid seal device as claimed in claim 1, it is characterised in that: also include jump ring
(12), described jump ring (12) is installed on the axle (1) of middle pole shoe (6) left and right sides, and is close to the left and right of middle pole shoe (6)
End face.
4. zigzag tooth end-surface type magnetic fluid seal device as claimed in claim 1, it is characterised in that: also include magnetism-isolating loop,
Shell (2), bearing (3), the left side of left pole shoe (5) and the right side of right pole shoe (7) install magnetism-isolating loop and bearing (3) the most successively.
5. zigzag tooth end-surface type magnetic fluid seal device as claimed in claim 4, it is characterised in that: described magnetism-isolating loop bag
Including outer magnetism-isolating loop (8) and interior magnetism-isolating loop (9), described outer magnetism-isolating loop (8) is installed on the inwall of shell (2), and interior magnetism-isolating loop (9) is pacified
It is loaded on axle (1), between inwall and the outer wall of interior magnetism-isolating loop (9) of outer magnetism-isolating loop (8), there is gap, outer magnetism-isolating loop (8) and interior
The axial length of magnetism-isolating loop (9) is equal.
6. zigzag tooth end-surface type magnetic fluid seal device as claimed in claim 1, it is characterised in that: described permanent magnet
(11) being radial magnetizing type permanent magnet, the permanent magnet on left pole shoe (5) and the permanent magnet polarity on right pole shoe (7) are contrary.
7. zigzag tooth end-surface type magnetic fluid seal device as claimed in claim 1, it is characterised in that: described left pole shoe
And on the periphery of right pole shoe (7), be respectively provided with annular groove V (13) (5).
8. zigzag tooth end-surface type magnetic fluid seal device as claimed in claim 1, it is characterised in that: described pole tooth I
(61) quantity is 2-8, pole tooth I(61) radial height be 0.2-7mm；Annular groove I(62) quantity be 1-7, ring
Connected in star I(62) axial depth be 1-25mm, radial height 0.8-10mm；Described pole tooth II(63) and pole tooth I(61)
Quantity, equivalently-sized, annular groove II(64) with annular groove I(62) quantity, equivalently-sized.
9. zigzag tooth end-surface type magnetic fluid seal device as claimed in claim 1, it is characterised in that: described pole tooth III
(51) quantity is 2-8, pole tooth III(51) radial height be 0.2-7mm；Annular groove III(52) quantity be 2-8
Individual, its axial depth is 1-25mm, and radial height is 0.8 ~ 10mm；Described pole tooth IV (71) and pole tooth III(51) quantity,
Equivalently-sized, annular groove IV (72) and annular groove III(52) quantity, equivalently-sized.
10. zigzag tooth end-surface type magnetic fluid seal device as claimed in claim 1, it is characterised in that: described pole tooth I
(61) left side and annular groove III(52) bottom between gap be 0.1-5mm；Pole tooth II(63) right side and ring
Gap between the bottom of connected in star IV (72) is 0.1-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620809859.1U CN205841774U (en) | 2016-07-29 | 2016-07-29 | A kind of zigzag tooth end-surface type magnetic fluid seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620809859.1U CN205841774U (en) | 2016-07-29 | 2016-07-29 | A kind of zigzag tooth end-surface type magnetic fluid seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205841774U true CN205841774U (en) | 2016-12-28 |
Family
ID=57641704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620809859.1U Withdrawn - After Issue CN205841774U (en) | 2016-07-29 | 2016-07-29 | A kind of zigzag tooth end-surface type magnetic fluid seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205841774U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972219A (en) * | 2016-07-29 | 2016-09-28 | 广西科技大学 | Staggered tooth end face type magnetic fluid sealing device |
| CN107893856A (en) * | 2017-12-14 | 2018-04-10 | 广西科技大学 | A kind of telescopic device for sealing magnetic fluid of mixed type |
| CN107906207A (en) * | 2017-12-13 | 2018-04-13 | 广西科技大学 | A kind of series parallel type device for sealing magnetic fluid |
| CN107956883A (en) * | 2017-12-14 | 2018-04-24 | 广西科技大学 | A kind of radial direction socket type labyrinth type device for sealing magnetic fluid |
| CN113790270A (en) * | 2021-09-29 | 2021-12-14 | 北京交通大学 | Embedded sleeve type magnetic liquid sealing device |
-
2016
- 2016-07-29 CN CN201620809859.1U patent/CN205841774U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972219A (en) * | 2016-07-29 | 2016-09-28 | 广西科技大学 | Staggered tooth end face type magnetic fluid sealing device |
| CN107906207A (en) * | 2017-12-13 | 2018-04-13 | 广西科技大学 | A kind of series parallel type device for sealing magnetic fluid |
| CN107906207B (en) * | 2017-12-13 | 2023-05-02 | 广西科技大学 | Series-parallel magnetic fluid sealing device |
| CN107893856A (en) * | 2017-12-14 | 2018-04-10 | 广西科技大学 | A kind of telescopic device for sealing magnetic fluid of mixed type |
| CN107956883A (en) * | 2017-12-14 | 2018-04-24 | 广西科技大学 | A kind of radial direction socket type labyrinth type device for sealing magnetic fluid |
| CN113790270A (en) * | 2021-09-29 | 2021-12-14 | 北京交通大学 | Embedded sleeve type magnetic liquid sealing device |
| CN113790270B (en) * | 2021-09-29 | 2022-04-26 | 北京交通大学 | Embedded sleeve type magnetic liquid sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161228 Effective date of abandoning: 20171003 |