CN205877002U - Labyrinth device for sealing magnetic fluid - Google Patents
Labyrinth device for sealing magnetic fluid Download PDFInfo
- Publication number
- CN205877002U CN205877002U CN201620878554.6U CN201620878554U CN205877002U CN 205877002 U CN205877002 U CN 205877002U CN 201620878554 U CN201620878554 U CN 201620878554U CN 205877002 U CN205877002 U CN 205877002U
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- China
- Prior art keywords
- pole shoe
- shoe ring
- pole
- ring
- permanent magnet
- 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.)
- Withdrawn - After Issue
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to a mechanical engineering field of sealing up specifically indicates a labyrinth device for sealing magnetic fluid, and the device is including axle, shell, first end terminal ring, second end terminal ring, third end terminal ring, first end terminal ring lie in the left side of second end terminal ring, utmost point tooth I is offered to the right -hand member of first end terminal ring, annular groove I is offered to the left end of first end terminal ring, installation permanent magnet I in annular groove I, utmost point tooth II and utmost point tooth III are offered to the left end of second end terminal ring, and annular groove II is offered to the right -hand member of second end terminal ring, installation permanent magnet III in annular groove II, disc installation third end terminal ring leaves the space between third end terminal ring and the first end terminal ring outside second end terminal ring, installation permanent magnet II in this space, utmost point tooth II lies in first end terminal ring utmost point tooth I's topmost top, and utmost point tooth III lies in the below that first end terminal encircled utmost point tooth I bottom, and utmost point tooth I stretches into in the space of utmost point tooth II and utmost point tooth III component.
Description
Technical field
This utility model belongs to mechanical engineering technical field of sealing technology, is specifically related to a kind of simple in construction, and self-reparing capability is high
Device for sealing magnetic fluid.
Background technology
When common device for sealing magnetic fluid bears the pressure of outside more than its specified pressure-bearing, magnet fluid sealing lost efficacy,
Magnetic fluid leakage rate causes more greatly its self-reparing capability more weak, i.e. secondary bearing capacity is relatively low, thus reduces magnet fluid sealing
Reliability, the leakage therefore prolonging resistance magnetic fluid has important for improving the pressure performance of magnet fluid sealing and reliability thereof
Meaning.Existing sealing device is mostly straight-through labyrinth structure when injecting magnetic fluid, once leaks, magnetic fluid
Leakage rate is relatively big, thus causes the critical voltage endurance capability of sealing device and the decline of self-reparing capability, significantly reduces sealing
Reliability.
Summary of the invention
This utility model aims to solve the problem that defect of the prior art, design one can improve magnet fluid sealing voltage endurance capability,
And the labyrinth type device for sealing magnetic fluid that self-reparing capability is strong.
The technical solution of the utility model is as follows:
A kind of labyrinth type device for sealing magnetic fluid, including axle, shell, the first pole shoe ring, the second pole shoe ring, the 3rd pole shoe
Ring, permanent magnet I, permanent magnet II, permanent magnet III, described axle is installed in shell, described axle and the cross section of inboard wall of shell
Concentric circular each other, the first described pole shoe ring is installed on the inwall of shell, the inner ring surface of the first pole shoe ring near axle, with axle it
Between leave gap；
The second described pole shoe ring is installed on axle, is positioned at the right side of the first pole shoe ring；The 3rd described pole shoe ring is installed
On the inwall of shell, being positioned at the right side of the first pole shoe ring, the inner ring surface of the 3rd pole shoe ring is positioned at the outer ring surface of the second pole shoe ring
Outside, leaves gap between inner ring surface and the outer ring surface of the second pole shoe ring of the 3rd pole shoe ring；3rd pole shoe ring and the first pole shoe
Leaving space between ring, permanent magnet II is installed in this space, permanent magnet II respectively with the first pole shoe ring and the 3rd pole shoe ring phase
Contact；
On the right side of the first described pole shoe ring, interval arranges plural pole tooth I, and described pole tooth I is to the second pole
The left side of boots ring extends, and leaves gap between the left side of the second pole shoe ring；On the left side of the second pole shoe ring, interval sets
Putting pole tooth II and pole tooth III, described pole tooth II and pole tooth III extends to the first pole shoe ring right side, with the first pole shoe ring
Gap is left between right side；Described pole tooth II is positioned at the top of the first pole shoe ring pole tooth I topmost, described pole tooth
III is positioned at the lower section of the pole tooth I of the first pole shoe ring bottom；
Annular groove I is offered in the left side of the first described pole shoe ring, installs permanent magnet I in annular groove I；Described
Annular groove II is offered in the right side of the second pole shoe ring, installs permanent magnet III in annular groove II.
Described permanent magnet I and permanent magnet III is radial magnetizing type permanent magnet, and permanent magnet II is axial charging type permanent magnetism
Body.
Described permanent magnet I and the magnetic line of force of permanent magnet III are in opposite direction.
Also include magnetism-isolating loop and bearing, in the left side of the first pole shoe ring, magnetism-isolating loop and bearing are installed successively；At the 3rd pole shoe
The right side of ring installs magnetism-isolating loop and bearing successively.
Described magnetism-isolating loop is arranged on the inwall of shell.
The first described pole shoe ring includes radial section and axial direction part, and radial section is formed in one with axial direction part, and axial direction part hangs down
Directly in radial section axially in parallel with axle；Described pole tooth I is located on the right side of radial section, described axial direction part and the 3rd
Leaving space between pole shoe ring, permanent magnet II is installed in this space；The right side of described pole tooth II and the pole corresponding radial section of tooth III
End face.
Described pole tooth II is also set on axle, a part for the left side of pole tooth II and the right side pair of the first pole shoe ring
Should, leave gap between them.
Arranging female thread on the inner headed face of the second described pole shoe ring, the middle part of axle is arranged and the second pole shoe ring axial length
Consistent external screw thread, the second pole shoe ring is threaded connection and is fixed on axle.
Gap between right side and the left side of the second pole shoe ring of described pole tooth I is 0.1mm-5mm；Described pole
Gap between tooth II and the left side of pole tooth III and the right side of the first pole shoe ring is 0.1mm-5mm.
Gap between periphery and the inner headed face of the 3rd pole shoe ring of the second described pole shoe ring is 0.1mm-5mm, institute
Gap between inner ring surface and the axle of the first pole shoe ring stated is 0.3-5mm.
The installation process of sealing device described in the utility model is as follows: the second pole shoe ring screws in from right side and is provided with axle
Externally threaded shaft part, installs permanent magnet III, in the second pole shoe ring left side in the annular groove II of the second pole shoe ring right side
Pole tooth II and pole tooth III between space inject magnetic fluid；3rd pole is installed on the periphery on the right side of the second pole shoe ring
Boots ring, makes the right-hand member of the 3rd pole shoe ring and the right-hand member of the second pole shoe ring flush；The periphery of the second pole shoe ring is positioned at the 3rd
The left end of pole shoe ring installs permanent magnet II；Permanent magnet I is installed in the annular groove I of the first pole shoe ring left side, permanent magnet I's
Magnetic line of force direction is in opposite direction with the magnetic line of force of permanent magnet III, and the right-hand member in the first pole shoe ring injects magnetic fluid, by the first pole
Boots ring is mounted on an axle from left side, makes the pole tooth I of right-hand member in the first pole shoe ring stretch into pole tooth II and the pole of the second pole shoe ring left end
In the space of tooth III composition, the pole tooth II of the second pole shoe ring left end stretches into pole tooth I and the first pole shoe ring axial direction part group of the top
In the space become, pole tooth III stretches in the pole tooth I of bottom and the space of axle composition；Pacify successively in the left side of the first pole shoe ring
Dress magnetism-isolating loop and bearing, install magnetism-isolating loop and bearing successively on the right side of the second pole shoe ring；Last installation shell, shell on axle
Can cover the above-mentioned seal member being installed on axle, the inwall of shell left end is close to be positioned at the bearing in left side, the right-hand member of shell with
End cap is threaded connection, and end cap compresses the outer ring of the bearing being positioned at right side.
Sealing device the second pole shoe ring described in the utility model is threaded connection with axle, and sealing dress has been better achieved
Put the axial location of entirety, and can prevent medium to be sealed from leaking at mechanical connection by threaded mode；This practicality is new
The pole tooth of type the first pole shoe ring right side and the second pole shoe ring left side forms labyrinth seal structure, and this labyrinth seal structure can have
Effect improves the secondary bearing capacity of magnet fluid sealing；This sealing device is at the middle part of the left side of the first pole shoe ring and the second pole shoe
The permanent magnet of radial magnetizing type is installed at the middle part of the right side of ring, simultaneously on the periphery of the second pole shoe ring the first pole shoe ring with
The permanent magnet of axial charging type, when being high-pressure medium by sealed environment, radial magnetizing type permanent magnetism are installed between the 3rd pole shoe ring
The radial force that body produces can make magnetic fluid resist the on high-tension side pressure from leaking medium from inside to outside, when by sealing ring
When border is vacuum condition, it is outside to internal leakage that the axial force that axial charging type permanent magnet produces can make magnetic fluid opposing
The pressure of medium so that this device not only can solve the external leakage problem of pressure medium, it is also possible to solve vacuum environment
Internal leakage problem；This utility model is by the shape arranging radial magnetizing type permanent magnet and axial charging type permanent magnet combines
Formula, can improve the magnetic field intensity in seal clearance, thus improve magnet fluid sealing voltage endurance capability；The letter of this utility model structure
Single, utilize minimum structure space to realize maximum sealing function.
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 structure title of correspondence is as follows: 1-axle, 2-shell, 3-magnetism-isolating loop, 4-the first pole shoe ring,
41-pole tooth I, 42-annular groove I, 5-the 3rd pole shoe ring, 6-the second pole shoe ring, 61-pole tooth II, 62-pole tooth III, 63-annular
Groove II, 7-permanent magnet I, 8-bearing, 9-end cap, 10-permanent magnet II, 11-permanent magnet III.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings.
Labyrinth type device for sealing magnetic fluid as shown in Figure 1, including axle 1, shell the 2, first pole shoe ring the 4, second pole shoe ring
6, the 3rd pole shoe ring 5, permanent magnet I7, permanent magnet II10, permanent magnet III11, described axle 1 is installed in shell 2, described axle
1 and the cross section of inboard wall concentric circular each other of shell 2, the first described pole shoe ring 4 is installed on the inwall of shell 2, the first pole shoe
The inner ring surface of ring 4 is near axle 1, and leaves gap between axle 1；
The second described pole shoe ring 6 is installed on axle 1, is positioned at the right side of the first pole shoe ring 4；The 3rd described pole shoe ring 5
Being installed on the inwall of shell 2, be positioned at the right side of the first pole shoe ring 4, the inner ring surface of the 3rd pole shoe ring 5 is positioned at the second pole shoe ring 6
Outer ring surface outside, leave gap between inner ring surface and the outer ring surface of the second pole shoe ring 6 of the 3rd pole shoe ring 5；3rd pole shoe ring 5
And leaving space between the first pole shoe ring 4, permanent magnet II10 is installed in this space, permanent magnet II10 respectively with the first pole shoe ring
4 and the 3rd pole shoe ring 5 contact；
On the right side of the first described pole shoe ring 4 interval arrange plural pole tooth I41, described pole tooth I41 to
The left side of the second pole shoe ring 6 extends, and leaves gap between the left side of the second pole shoe ring 6；The left side of the second pole shoe ring 6
Upper interval arranges pole tooth II61 and pole tooth III62, and described pole tooth II61 and pole tooth III62 is to the right side of the first pole shoe ring 4
Extend, and leave gap between the right side of the first pole shoe ring 4；Described pole tooth II61 is positioned at first pole shoe ring 4 the top
The top of pole tooth I41, described pole tooth III62 is positioned at the lower section of the pole tooth I41 of the first pole shoe ring 4 bottom；
Annular groove I42 is offered in the left side of the first described pole shoe ring 4, installs permanent magnet I7 in annular groove I42；
Annular groove II63 is offered in the right side of the second described pole shoe ring 6, installs permanent magnet III11 in annular groove II63.
Described permanent magnet I7 and permanent magnet III11 is radial magnetizing type permanent magnet, and permanent magnet II10 is axial charging type
Permanent magnet.
Described permanent magnet I7 and the magnetic line of force of permanent magnet III11 are in opposite direction.
Also include magnetism-isolating loop 3 and bearing 8, in the left side of the first pole shoe ring 4, magnetism-isolating loop 3 and bearing 8 are installed successively；The 3rd
The right side of pole shoe ring 5 installs magnetism-isolating loop 3 and bearing 8 successively.
Described magnetism-isolating loop 3 is arranged on the inwall of shell 2.
The first described pole shoe ring 4 includes radial section and axial direction part, and radial section is formed in one with axial direction part, and axial direction part hangs down
Directly in radial section axially in parallel with axle 1；Described pole tooth I41 is located on the right side of radial section, described axial direction part with
Leaving space between 3rd pole shoe ring 5, permanent magnet II10 is installed in this space；Described pole tooth II61 and III62 pair, pole tooth
Answer the right side of radial section.
Described pole tooth II62 is also set on axle 1, a part for the left side of pole tooth II62 and the right side of the first pole shoe ring 4
End face is corresponding, leaves gap between them.
Arranging female thread on the inner headed face of the second described pole shoe ring 6, the middle part of axle 1 arranges axial with the second pole shoe ring 6
The external screw thread that length is consistent, the second pole shoe ring 6 is threaded connection and is fixed on axle 1.
Gap between right side and the left side of the second pole shoe ring 6 of described pole tooth I41 is 0.1mm-5mm；Described
Pole tooth II61 and the right side of the left side of pole tooth III62 and the first pole shoe ring 4 between gap be 0.1mm-5mm.
Gap between periphery and the inner headed face of the 3rd pole shoe ring 5 of the second described pole shoe ring 6 is 0.1mm-5mm,
Gap between inner ring surface and the axle 1 of the first described pole shoe ring 4 is 0.3-5mm.
The installation process of sealing device described in the utility model is as follows: the second pole shoe ring 6 screws in from right side and arranges axle 1
There is externally threaded shaft part, permanent magnet III11 is installed in the annular groove II63 of the second pole shoe ring 6 right side, at the second pole shoe
Magnetic fluid is injected in space between the pole tooth II61 and pole tooth III62 of ring 6 left side；Cylindrical on the right side of the second pole shoe ring 6
3rd pole shoe ring 5 is installed on face, makes the right-hand member of the 3rd pole shoe ring 5 and the right-hand member of the second pole shoe ring 6 flush；In the second pole shoe ring 6
Periphery on be positioned at the 3rd pole shoe ring 5 left end install permanent magnet II10；Annular groove in the first pole shoe ring 4 left side
The magnetic line of force direction installing permanent magnet I7, permanent magnet I7 in I42 is in opposite direction with the magnetic line of force of permanent magnet III11, in the first pole
The right-hand member of boots ring 4 injects magnetic fluid, the first pole shoe ring 4 is arranged on axle 1 from left side, makes right-hand member in the first pole shoe ring 4
Pole tooth I41 stretches in the space of pole tooth II61 and pole tooth III62 composition of the second pole shoe ring 6 left end, the second pole shoe ring 6 left end
Pole tooth II61 stretches in the space of the pole tooth I41 of the top and the first pole shoe ring 4 axial direction part composition, and pole tooth III62 stretches under
In the space that the pole tooth I41 of side and axle 1 form；Install successively in the left side of the first pole shoe ring 4 every magnetic 3 ring and bearing 8, second
The right side of pole shoe ring 6 installs magnetism-isolating loop 3 and bearing 8 successively；Last installation shell 2 on axle 1, shell 2 can cover above-mentioned installation
Seal member on axle 1, the inwall of shell 2 left end is close to be positioned at the bearing 8 in left side, and the right-hand member of shell 2 and end cap 9 pass through spiral shell
Stricture of vagina connects, and end cap 9 compresses the outer ring of the bearing 8 being positioned at right side.
Claims (10)
1. a labyrinth type device for sealing magnetic fluid, including axle (1), shell (2), the first pole shoe ring (4), the second pole shoe ring (6),
3rd pole shoe ring (5), permanent magnet I(7), permanent magnet II(10), permanent magnet III(11), described axle (1) is installed on shell (2)
In, described axle (1) and the cross section of inboard wall concentric circular each other of shell (2), it is characterised in that:
Described the first pole shoe ring (4) is installed on the inwall of shell (2), the inner ring surface of the first pole shoe ring (4) near axle (1),
And axle leaves gap between (1)；
Described the second pole shoe ring (6) is installed on axle (1), is positioned at the right side of the first pole shoe ring (4)；The 3rd described pole shoe ring
(5) being installed on the inwall of shell (2), be positioned at the right side of the first pole shoe ring (4), the inner ring surface of the 3rd pole shoe ring (5) is positioned at
Outside the outer ring surface of diode boot ring (6), leave between inner ring surface and the outer ring surface of the second pole shoe ring (6) of the 3rd pole shoe ring (5)
Gap；Space, permanent magnet II(10 is left between 3rd pole shoe ring (5) and the first pole shoe ring (4)) it is installed in this space, permanent magnetism
Body II(10) contact with the first pole shoe ring (4) and the 3rd pole shoe ring (5) respectively；
On the right side of described the first pole shoe ring (4), interval arranges plural pole tooth I(41), described pole tooth I(41)
Extend to the left side of the second pole shoe ring (6), and leave gap between the left side of the second pole shoe ring (6)；Second pole shoe ring (6)
Left side on interval pole tooth II(61 is set) and pole tooth III(62), described pole tooth II(61) and pole tooth III(62) to first
The right side of pole shoe ring (4) extends, and leaves gap between the right side of the first pole shoe ring (4)；Described pole tooth II(61) position
In the first pole shoe ring (4) pole tooth I(41 topmost) top, described pole tooth III(62) be positioned at the first pole shoe ring (4) under
End pole tooth I(41) lower section；
Annular groove I(42 is offered in the left side of described the first pole shoe ring (4)), at annular groove I(42) in install permanent magnet I
(7)；Annular groove II(63 is offered in the right side of described the second pole shoe ring (6)), at annular groove II(63) in install permanent magnetism
Body III(11).
2. labyrinth type device for sealing magnetic fluid as claimed in claim 1, it is characterised in that: described permanent magnet I(7) and permanent magnetism
Body III(11) it is radial magnetizing type permanent magnet, permanent magnet II(10) it is axial charging type permanent magnet.
3. labyrinth type device for sealing magnetic fluid as claimed in claim 1 or 2, it is characterised in that: described permanent magnet I(7) and
Permanent magnet III(11) the magnetic line of force in opposite direction.
4. labyrinth type device for sealing magnetic fluid as claimed in claim 1, it is characterised in that: also include magnetism-isolating loop (3) and bearing
(8), the left side in the first pole shoe ring (4) installs magnetism-isolating loop (3) and bearing (8) successively；On the right side of the 3rd pole shoe ring (5) successively
Magnetism-isolating loop (3) and bearing (8) are installed.
5. labyrinth type device for sealing magnetic fluid as claimed in claim 4, it is characterised in that: described magnetism-isolating loop (3) is arranged on
On the inwall of shell (2).
6. labyrinth type device for sealing magnetic fluid as claimed in claim 1, it is characterised in that: described the first pole shoe ring (4) bag
Including radial section and axial direction part, radial section is formed in one with axial direction part, and axial direction part is perpendicular to radial section and puts down with the axial of axle (1)
OK；Described pole tooth I(41) it is located on the right side of radial section, leave sky between described axial direction part and the 3rd pole shoe ring (5)
Between, permanent magnet II(10) it is installed in this space；Described pole tooth II(61) and pole tooth III(62) right-hand member of corresponding radial section
Face.
7. labyrinth type device for sealing magnetic fluid as claimed in claim 6, it is characterised in that: described pole tooth II(62) also it is set with
On axle (1), pole tooth II(62) the part of left side corresponding with the right side of the first pole shoe ring (4), leave between them
Gap.
8. labyrinth type device for sealing magnetic fluid as claimed in claim 1, it is characterised in that: described the second pole shoe ring (6)
Arranging female thread on inner headed face, the middle part of axle (1) arranges the external screw thread consistent with the second pole shoe ring (6) axial length, the second pole
Boots ring (6) is threaded connection and is fixed on axle (1).
9. labyrinth type device for sealing magnetic fluid as claimed in claim 1, it is characterised in that: right-hand member described pole tooth I(41)
Gap between the left side of face and the second pole shoe ring (6) is 0.1mm-5mm；Described pole tooth II(61) and pole tooth III(62)
Left side and the right side of the first pole shoe ring (4) between gap be 0.1mm-5mm.
10. labyrinth type device for sealing magnetic fluid as claimed in claim 1, it is characterised in that: described the second pole shoe ring (6)
Gap between the inner headed face of periphery and the 3rd pole shoe ring (5) is 0.1mm-5mm, the internal ring of described the first pole shoe ring (4)
Gap between face and axle (1) is 0.3-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620878554.6U CN205877002U (en) | 2016-08-15 | 2016-08-15 | Labyrinth device for sealing magnetic fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620878554.6U CN205877002U (en) | 2016-08-15 | 2016-08-15 | Labyrinth device for sealing magnetic fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205877002U true CN205877002U (en) | 2017-01-11 |
Family
ID=57703188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620878554.6U Withdrawn - After Issue CN205877002U (en) | 2016-08-15 | 2016-08-15 | Labyrinth device for sealing magnetic fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205877002U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015360A (en) * | 2016-08-15 | 2016-10-12 | 广西科技大学 | Labyrinth-type magnetofluid sealing device |
| CN107830177A (en) * | 2017-12-13 | 2018-03-23 | 广西科技大学 | A kind of device for sealing magnetic fluid |
| CN112178204A (en) * | 2020-10-26 | 2021-01-05 | 清华大学 | Labyrinth type magnetic liquid sealing device |
-
2016
- 2016-08-15 CN CN201620878554.6U patent/CN205877002U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015360A (en) * | 2016-08-15 | 2016-10-12 | 广西科技大学 | Labyrinth-type magnetofluid sealing device |
| CN107830177A (en) * | 2017-12-13 | 2018-03-23 | 广西科技大学 | A kind of device for sealing magnetic fluid |
| CN107830177B (en) * | 2017-12-13 | 2019-04-02 | 广西科技大学 | A kind of device for sealing magnetic fluid |
| CN112178204A (en) * | 2020-10-26 | 2021-01-05 | 清华大学 | Labyrinth type magnetic liquid sealing device |
| CN112178204B (en) * | 2020-10-26 | 2022-02-25 | 清华大学 | Labyrinth type magnetic liquid sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170111 Effective date of abandoning: 20180216 |
|
| AV01 | Patent right actively abandoned |