CN205824189U - A kind of symmetric form bayonet-type magnetic fluid seal device - Google Patents
A kind of symmetric form bayonet-type magnetic fluid seal device Download PDFInfo
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- CN205824189U CN205824189U CN201620799269.5U CN201620799269U CN205824189U CN 205824189 U CN205824189 U CN 205824189U CN 201620799269 U CN201620799269 U CN 201620799269U CN 205824189 U CN205824189 U CN 205824189U
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- cannelure
- pole
- pole shoe
- pole tooth
- tooth
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Abstract
This utility model belongs to sealing field of mechanical engineering, is specifically related to a kind of symmetric form bayonet-type magnetic fluid seal device, including middle pole shoe, left pole shoe, right pole shoe, permanent magnet, shell；Middle pole shoe is arranged on the middle part of axle, and the left side of middle pole shoe is offered multiple pole tooth I, offered cannelure I, be provided with permanent magnet in cannelure I between two adjacent pole tooth I；Multiple pole tooth II is offered in the right side of middle pole shoe, offers cannelure II, be provided with permanent magnet in cannelure II between two adjacent pole tooth II；It is respectively mounted left pole shoe and right pole shoe in the left side of middle pole shoe and right side, pole tooth III and cannelure III is offered in the right side of left pole shoe, pole tooth IV and cannelure IV are offered in the left side of right pole shoe, pole tooth I is made to stretch in cannelure III, pole tooth III stretches in cannelure I, pole tooth II stretches in cannelure IV, and pole tooth IV stretches in cannelure II.Performance that this sealing device is pressure is high, and sealing property is stable.
Description
Technical field
This utility model belongs to sealing field of mechanical engineering, is specifically related to a kind of symmetric form bayonet-type magnetic fluid seal
Device.
Background technology
Along with economical growing, sealing property is required more and more higher by the association area such as industrial equipment, and traditional is close
Envelope mode has been difficult to meet the seal request of some special occasions, and the development of magnetic fluid technique has promoted Magneticfluid Seal Technique
Development, Magneticfluid Seal Technique just plays an increasingly important role in field of sealing technology.Existing sealing structure, its sealing ring
Being straight ring type, when seal failure, the leakage rate of magnetic fluid is big, when being applied under the conditions of wide arc gap, seals structure
Bearing capacity is low, it is difficult to meet the requirement of the special operation conditions such as high-speed overload.The most existing sealing device permanent magnet to seal between
The magnetic circuit of gap is longer, and the magnetic field force causing magnetic fluid in seal clearance to be subject to is strong, the magnetic fluid when there is seal failure
Loss amount is big.
Summary of the invention
This utility model is for the deficiency of present technology, it is provided that the symmetric form bayonet-type magnetic fluid of a kind of good sealing effect
Sealing device.
The technical solution of the utility model is as follows:
A kind of symmetric form bayonet-type magnetic fluid seal device, including middle pole shoe, left pole shoe, right pole shoe, permanent magnet, outer
Shell；Described middle pole shoe is arranged on the middle part of axle, and multiple pole tooth I, two adjacent pole tooth I are offered in the left side of middle pole shoe
Between offer cannelure I, in cannelure I, be provided with permanent magnet, the opposite polarity of the adjacent permanent magnet in two cannelure I；
Multiple pole tooth II is offered in the right side of middle pole shoe, offers cannelure II, in cannelure II between two adjacent pole tooth II
It is provided with permanent magnet, the opposite polarity of the adjacent permanent magnet in two cannelure II；
Described left pole shoe is installed on the axle on the left of middle pole shoe, and the right side of left pole shoe is offered multiple pole tooth III
Cannelure I is stretched into each cannelure I, pole tooth III of pole shoe left side in the middle of cannelure III, pole tooth III respectively one_to_one corresponding
In, leave gap between end and the permanent magnet of pole tooth III；In the middle of cannelure III one_to_one corresponding respectively, pole shoe left side is each
Individual pole tooth I, pole tooth I stretch in cannelure III, leave gap between end and the right side of cannelure III of pole tooth I；At ring
Injecting sealing medium in shape groove III, sealing medium is adsorbed on the left side of pole tooth I under the action of a magnetic force
Described right pole shoe is installed on the axle on the right side of middle pole shoe, and the left side of right pole shoe is offered pole tooth IV and annular
Groove IV, each cannelure II of pole shoe right side in the middle of pole tooth IV one_to_one corresponding respectively, pole tooth IV stretches in cannelure II, pole tooth
End and permanent magnet between leave gap；Each pole tooth II of pole shoe right side, pole in the middle of cannelure IV one_to_one corresponding respectively
Tooth II stretches in cannelure IV, leaves gap between pole tooth II end and the left side of cannelure IV；Inject in cannelure IV
Sealing medium, sealing medium is adsorbed on the right side of pole tooth II under the action of a magnetic force.
Also include that jump ring, described jump ring are arranged on the axle of the middle pole shoe left and right sides, be close to middle pole shoe both sides.
Also include that two bearings and two groups of magnetism-isolating loops, two groups of described magnetism-isolating loops are respectively provided on left pole shoe left side and the right side
On pole shoe right side, two bearings are installed on axle, and the left side and the right pole shoe that are respectively provided at magnetism-isolating loop on left pole shoe left side are right
The right side of magnetism-isolating loop on end face.
Described magnetism-isolating loop includes outer magnetism-isolating loop and interior magnetism-isolating loop, and outer magnetism-isolating loop is installed on the inwall of shell, interior every magnetic
Ring is installed on axle, there is gap between outer magnetism-isolating loop and interior magnetism-isolating loop, and outer magnetism-isolating loop is identical with the axial length of interior magnetism-isolating loop.
Described permanent magnet is radial magnetizing type permanent magnet.
The periphery of left pole shoe is offered groove I, the periphery of right pole shoe is offered groove II, described groove I
With installation rubber ring in groove II.
The quantity of pole tooth I is 2-8, and its radial height is 0.2-1mm, and the number of cannelure I is 1-7, cannelure I's
Radial height is 2-8mm；Pole tooth II and the quantity of pole tooth I, equivalently-sized, the quantity of cannelure II and cannelure I, size phase
With.
The quantity of described pole tooth III is 2-8, and its radial height is 0.2-1mm；The number of cannelure III is 2-8
Individual, its radial height is 2-8mm；Pole tooth IV and the quantity of pole tooth III, equivalently-sized, the number of cannelure IV and cannelure III
Amount, equivalently-sized.
Gap length between end and the right side of cannelure III of pole tooth I is 0.1-5mm, pole tooth II end and ring
Gap length between the left side of shape groove IV is 0.1-5mm.
Pole tooth I and pole tooth II is symmetrical relative to middle pole shoe.
Installation process of the present utility model is as follows: permanent magnet is separately mounted to middle pole shoe left side cannelure I and
In the cannelure II of right side, middle pole shoe is arranged on the middle part of axle, on the middle left side of pole shoe and the axle on right side point
Jump ring is not installed；Rubber ring is installed in the groove I of left pole shoe periphery, rubber is installed in the groove II of right pole shoe periphery
Circle, injects sealing medium in the cannelure III of left pole shoe right side, and sealing medium is magnetic fluid, in right pole shoe left side
Cannelure IV in inject sealing medium, this sealing medium is magnetic fluid, more left pole shoe is arranged on the left side of middle pole shoe
Axle on, on the axle on the right side that right pole shoe is arranged on middle pole shoe, make the pole tooth I on the left of middle pole shoe stretch into cannelure III
In, and contact with the sealing medium in cannelure III, make the pole tooth II on the right side of middle pole shoe stretch in cannelure IV, and and ring
Sealing medium contact in shape groove IV, in tooth III in pole stretches into the cannelure I on the left of middle pole shoe simultaneously, and the right-hand member of pole tooth III
There is gap with the left part of the permanent magnet in cannelure I in portion, pole tooth IV stretches into the cannelure II on the right side of middle pole shoe, and pole tooth
Gap is there is in the left part of IV with the right part of permanent magnet in cannelure II；In the left side of left pole shoe, magnetism-isolating loop and axle are installed successively
Hold, on the right side of right pole shoe, magnetism-isolating loop and bearing are installed successively；Shell is mounted on an axle, makes jacket live in state and be arranged on axle
On part, make the inner side of shell left end be close to be positioned at the bearing in left side；Finally by threadeding of end cap and shell right-hand member,
Compress the outer ring of the bearing being positioned at right side.
This utility model offers pole tooth and cannelure at middle pole shoe, and offers pole tooth and ring on left pole shoe and right pole shoe
Shape groove, makes the pole tooth on middle pole shoe be positioned at the cannelure on left pole shoe and right pole shoe, and makes on left pole shoe and right pole shoe
Pole tooth is positioned at the cannelure of middle pole shoe, the labyrinth seal structure of symmetric form bayonet-type, and the bearing capacity of this sealing structure is strong,
During seal failure, the loss amount of magnetic fluid is little, can meet the high sealing performance requirement under the special operation conditions such as high-speed overload；Middle
Pole tooth and cannelure on pole shoe, left pole shoe, right pole shoe are all multiple along being radially arranged of axle, form the radial seal of bayonet-type
Ring, reduces the axle circular runout in the rotation process impact on seal clearance size, thus improves stablizing of sealing property
Property；In the cannelure of middle pole shoe, permanent magnet, the opposite polarity of adjacent permanent magnet are installed, substantially reduce permanent magnet to magnetic
The magnetic circuit of fluid-tight gap location, strengthens the permanent magnet magnetic field force to magnetic fluid, effectively reduces the loss of magnetic fluid, expands
The safe condition range of sealing device.
Accompanying drawing explanation
Fig. 1 is the magnetic fluid seal device of magnetic source tandem type
In figure, each sequence number indicates and the structure title of correspondence is as follows: 1-axle, 2-shell, 3-bearing, magnetism-isolating loop in 4-, outside 5-
Magnetism-isolating loop, the left pole shoe of 6-, pole shoe in the middle of 61-pole tooth III, 62-cannelure III, 7-, 71-pole tooth I, 72-cannelure I, 73-pole
The right pole shoe of tooth II, 74-cannelure II, 8-, 81-pole tooth IV, 82-pole tooth IV, 9-jump ring, 10-end cap, 11-groove II, 12-is close
Envelope medium, 13-permanent magnet, 14-groove I.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is further described.
As it is shown in figure 1, a kind of symmetric form bayonet-type magnetic fluid seal device, including middle pole shoe 7, left pole shoe 6, the right side
Pole shoe 8, permanent magnet 13, shell 2；Described middle pole shoe 7 is arranged on the middle part of axle 1, and the left side of middle pole shoe 7 is offered multiple
Pole tooth I71, offers cannelure I72 between two adjacent pole tooth I71, is provided with permanent magnet 13, adjacent two in cannelure I72
The opposite polarity of the permanent magnet 13 in individual cannelure I72；Multiple pole tooth II73, adjacent two are offered in the right side of middle pole shoe 7
Offer cannelure II74 between individual pole tooth II73, in cannelure II74, be provided with permanent magnet 13, two adjacent cannelure II74
In the opposite polarity of permanent magnet 13；Pole tooth I71 and pole tooth II73 is symmetrical relative to middle pole shoe 7；
Described left pole shoe 6 is installed on the axle 1 on the left of middle pole shoe 7, and the right side of left pole shoe 6 is offered multiple poles tooth
Each cannelure I72 of pole shoe 7 left side, pole tooth in the middle of III61 and cannelure III62, pole tooth III61 one_to_one corresponding respectively
III61 stretches in cannelure I72, leaves gap between end and the permanent magnet 13 of pole tooth III61；Cannelure III62 difference one
Each pole tooth I71, pole tooth I71 of one corresponding dynode boots 7 left side stretch in cannelure III62, the end of pole tooth I71 and ring
Leaving gap between the right side of shape groove III62, inject sealing medium 12 in cannelure III62, sealing medium 12 is in magnetic field
It is adsorbed under the effect of power on the left side of pole tooth I71；
Described right pole shoe 8 is installed on the axle 1 on the right side of middle pole shoe 7, and pole tooth IV 81 is offered in the left side of right pole shoe 8
With cannelure IV 82, each cannelure II74 of pole shoe 7 right side in the middle of pole tooth IV 81 one_to_one corresponding respectively, pole tooth IV 81 stretches into
In cannelure II74, between end and the permanent magnet 13 of pole tooth IV 81, leave gap；In the middle of cannelure IV 82 one_to_one corresponding respectively
Each pole tooth II73, pole tooth II73 of pole shoe 7 right side stretch in cannelure IV 82, pole tooth II73 end and cannelure IV 82
Leaving gap between left side, inject sealing medium 12 in cannelure IV 82, sealing medium 12 is inhaled under the action of a magnetic force
Invest on the right side of pole tooth II73.
Also include that jump ring 9, described jump ring 9 are arranged on the axle 1 of middle pole shoe 7 left and right sides, be close to middle pole shoe 7 liang
Side.
Also include two bearings 3 and two groups of magnetism-isolating loops, two groups of described magnetism-isolating loops be respectively provided in left pole shoe 6 left side and
On right pole shoe 8 right side, two bearings 3 are installed on axle 1, are respectively provided at left side and the right side of magnetism-isolating loop on left pole shoe 6 left side
The right side of magnetism-isolating loop on pole shoe 8 right side.
Described magnetism-isolating loop includes outer magnetism-isolating loop 5 and interior magnetism-isolating loop 4, and outer magnetism-isolating loop 5 is installed on the inwall of shell 2, interior
Magnetism-isolating loop 4 is installed on axle 1, there is gap, outer magnetism-isolating loop 5 and the axle of interior magnetism-isolating loop 4 between outer magnetism-isolating loop 5 and interior magnetism-isolating loop 4
Identical to length.
Described permanent magnet 13 is radial magnetizing type permanent magnet.
The periphery of left pole shoe 6 offers groove I14, the periphery of right pole shoe 8 is offered groove II11, described
Rubber ring is installed in groove I14 and groove II11.
The quantity of pole tooth I71 is 2-8, and its radial height is 0.2-1mm, and the number of cannelure I72 is 1-7, annular
The radial height of groove I72 is 2-8mm；Pole tooth II73 and the quantity of pole tooth I71, equivalently-sized, cannelure II74 and cannelure I72
Quantity, equivalently-sized.
The quantity of described pole tooth III61 is 2-8, and its radial height is 0.2-1mm；The number of cannelure III62 is
2-8, its radial height is 2-8mm；Pole tooth IV 81 and the quantity of pole tooth III61, equivalently-sized, cannelure IV 82 and cannelure
The quantity of III62, equivalently-sized.
Gap length between end and the right side of cannelure III62 of pole tooth I71 is 0.1-5mm, pole tooth II73 end
Gap length between end and the left side of cannelure IV 82 is 0.1-5mm.
Installation process of the present utility model is as follows: permanent magnet 13 is separately mounted to the cannelure of middle pole shoe 7 left side
In the cannelure II74 of I72 and right side, middle pole shoe 7 is arranged on the middle part of axle 1, on left side and the right side of middle pole shoe 7
It is respectively mounted jump ring 9 on the axle 1 of side；Rubber ring is installed in the groove I14 of left pole shoe 6 periphery, at right pole shoe 8 periphery
Installing rubber ring in groove II11, inject sealing medium 12 in the cannelure III62 of left pole shoe 6 right side, sealing medium is
Magnetic fluid, injects sealing medium 12 in the cannelure IV 82 of right pole shoe 8 left side, and this sealing medium is magnetic fluid, then
On the axle 1 in the left side that left pole shoe 6 is arranged on middle pole shoe 7, on the axle 1 on the right side that right pole shoe 8 is arranged on middle pole shoe 7,
Make the pole tooth I71 on the left of middle pole shoe 7 stretch in cannelure III62, and contact with the sealing medium in cannelure III62, make
Pole tooth II73 on the right side of middle pole shoe 7 stretches in cannelure IV 82, and contacts with the sealing medium in cannelure IV 82, pole simultaneously
Tooth III61 stretches in the cannelure I72 on the left of middle pole shoe 7, and the right part of pole tooth III61 and the permanent magnetism in cannelure I72
There is gap in the left part of body, pole tooth IV 82 stretches into the cannelure II74 on the right side of middle pole shoe 7, and the left part of pole tooth IV 82 with
In cannelure II74 there is gap in the right part of permanent magnet；In the left side of left pole shoe 6, magnetism-isolating loop and bearing 3 are installed successively, on the right side
The right side of pole shoe 8 installs magnetism-isolating loop and bearing 3 successively；Shell 2 is arranged on axle 1, makes shell 2 cover and above-mentioned be arranged on axle 1
On part, make the inner side of shell 2 left end be close to be positioned at the bearing 3 in left side；Screw thread finally by end cap 10 with shell 2 right-hand member
Connect, compress the outer ring of the bearing 3 being positioned at right side.
Claims (10)
1. a symmetric form bayonet-type magnetic fluid seal device, including middle pole shoe (7), left pole shoe (6), right pole shoe (8), forever
Magnet (13), shell (2)；It is characterized in that:
Described middle pole shoe (7) is arranged on the middle part of axle (1), and multiple pole tooth I(71 is offered in the left side of middle pole shoe (7)),
Two adjacent pole tooth I(71) between offer cannelure I(72), at cannelure I(72) in be provided with permanent magnet (13), adjacent two
Individual cannelure I(72) in the opposite polarity of permanent magnet (13)；Multiple pole tooth II(73 is offered in the right side of middle pole shoe (7)),
Two adjacent pole tooth II(73) between offer cannelure II(74), at cannelure II(74) in be provided with permanent magnet (13), adjacent
Two cannelure II(74) in the opposite polarity of permanent magnet (13)；
Described left pole shoe (6) is installed on the axle (1) in middle pole shoe (7) left side, the right side of left pole shoe (6) is offered multiple
Pole tooth III(61) and cannelure III(62), pole tooth III(61) distinguish each annular of pole shoe (7) left side in the middle of one_to_one corresponding
Groove I(72), pole tooth III(61) stretch into cannelure I(72) in, pole tooth III(61) end and permanent magnet (13) between leave between
Gap；Cannelure III(62) distinguish each pole tooth I(71 of pole shoe (7) left side in the middle of one_to_one corresponding), pole tooth I(71) stretch into ring
Shape groove III(62) in, pole tooth I(71) end and cannelure III(62) right side between leave gap；
Described right pole shoe (8) is installed on the axle (1) on middle pole shoe (7) right side, and pole tooth is offered in the left side of right pole shoe (8)
IV (81) and cannelure IV (82), each cannelure II of pole shoe (7) right side in the middle of pole tooth IV (81) one_to_one corresponding respectively
(74), pole tooth IV (81) stretches into cannelure II(74) in, leave gap between end and the permanent magnet (13) of pole tooth IV (81)；Ring
Each pole tooth II(73 of pole shoe (7) right side in the middle of shape groove IV (82) one_to_one corresponding respectively), pole tooth II(73) stretch into cannelure
In IV (82), pole tooth II(73) leave gap between end and the left side of cannelure IV (82).
2. symmetric form bayonet-type magnetic fluid seal device as claimed in claim 1, it is characterised in that: also include jump ring (9),
Described jump ring (9) is arranged on the axle (1) of middle pole shoe (7) left and right sides, is close to middle pole shoe (7) both sides.
3. symmetric form bayonet-type magnetic fluid seal device as claimed in claim 1, it is characterised in that: also include two bearings
(3) and two groups of magnetism-isolating loops, two groups of described magnetism-isolating loops are respectively provided on left pole shoe (6) left side and right pole shoe (8) right side,
Two bearings (3) are installed on axle (1), are respectively provided at left side and right pole shoe (8) right-hand member of magnetism-isolating loop on left pole shoe (6) left side
The right side of magnetism-isolating loop on face.
4. symmetric form bayonet-type magnetic fluid seal device as claimed in claim 3, it is characterised in that: described magnetism-isolating loop bag
Including outer magnetism-isolating loop (5) and interior magnetism-isolating loop (4), outer magnetism-isolating loop (5) is installed on the inwall of shell (2), and interior magnetism-isolating loop (4) is installed on
On axle (1), there is gap between outer magnetism-isolating loop (5) and interior magnetism-isolating loop (4), outer magnetism-isolating loop (5) is axial long with interior magnetism-isolating loop (4)
Spend identical.
5. symmetric form bayonet-type magnetic fluid seal device as claimed in claim 1, it is characterised in that: described permanent magnet
(13) it is radial magnetizing type permanent magnet.
6. symmetric form bayonet-type magnetic fluid seal device as claimed in claim 1, it is characterised in that: at left pole shoe (6)
Groove I(14 is offered on periphery), the periphery of right pole shoe (8) is offered groove II(11), described groove I(14) and recessed
Groove II(11) interior installation rubber ring.
7. symmetric form bayonet-type magnetic fluid seal device as claimed in claim 1, it is characterised in that: number pole tooth I(71)
Amount is 2-8, and its radial height is 0.2-1mm, cannelure I(72) number be 1-7, cannelure I(72) radial height
For 2-8mm；Pole tooth II(73) with pole tooth I(71) quantity, equivalently-sized, cannelure II(74) with cannelure I(72) quantity,
Equivalently-sized.
8. symmetric form bayonet-type magnetic fluid seal device as claimed in claim 1, it is characterised in that: described pole tooth III
(61) quantity is 2-8, and its radial height is 0.2-1mm；Cannelure III(62) number be 2-8, its radial height is
2-8mm；Pole tooth IV (81) and pole tooth III(61) quantity, equivalently-sized, cannelure IV (82) and cannelure III(62) number
Amount, equivalently-sized.
9. symmetric form bayonet-type magnetic fluid seal device as claimed in claim 1, it is characterised in that: described pole tooth I
(71) end and cannelure III(62) right side between gap length be 0.1-5mm, pole tooth II(73) end with annular
Gap length between the left side of groove IV (82) is 0.1-5mm.
10. symmetric form bayonet-type magnetic fluid seal device as claimed in claim 1, it is characterised in that: described pole tooth I
(71) with pole tooth II(73) symmetrical relative to middle pole shoe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620799269.5U CN205824189U (en) | 2016-07-28 | 2016-07-28 | A kind of symmetric form bayonet-type magnetic fluid seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620799269.5U CN205824189U (en) | 2016-07-28 | 2016-07-28 | A kind of symmetric form bayonet-type magnetic fluid seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205824189U true CN205824189U (en) | 2016-12-21 |
Family
ID=57556441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620799269.5U Withdrawn - After Issue CN205824189U (en) | 2016-07-28 | 2016-07-28 | A kind of symmetric form bayonet-type magnetic fluid seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205824189U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015583A (en) * | 2016-07-28 | 2016-10-12 | 广西科技大学 | Symmetrical staggered-tooth type magnetic fluid sealing device |
-
2016
- 2016-07-28 CN CN201620799269.5U patent/CN205824189U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015583A (en) * | 2016-07-28 | 2016-10-12 | 广西科技大学 | Symmetrical staggered-tooth type magnetic fluid 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 |
Granted publication date: 20161221 Effective date of abandoning: 20171003 |
|
| AV01 | Patent right actively abandoned |