CN205401722U - Labyrinth type magnetic fluid seal device - Google Patents
Labyrinth type magnetic fluid seal device Download PDFInfo
- Publication number
- CN205401722U CN205401722U CN201620156274.4U CN201620156274U CN205401722U CN 205401722 U CN205401722 U CN 205401722U CN 201620156274 U CN201620156274 U CN 201620156274U CN 205401722 U CN205401722 U CN 205401722U
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- pole shoe
- magnetic fluid
- wall
- magnetism
- 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- Withdrawn - After Issue
Links
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a labyrinth type magnetic fluid seal device, include axle, shell, bearing, separate magnetic ring, ladder sleeve, permanent magnet, end terminal, sealing washer. The permanent magnet is the tourus, installs on the middle part of axle, the end terminal is installed on the shell inner wall, and the inner wall of end terminal corresponds the same radial setting of permanent magnet, and the inner wall of end terminal and the coincidence of the outer wall axle center of permanent magnet are equipped with the space between the inner wall of end terminal and the outer wall of permanent magnet, and the inner wall of end terminal is at the ascending length of axle equals or the summary is greater than the permanent magnet outer wall in the ascending length of axle, the both sides of end terminal inner wall are equipped with the cascaded surface, the epaxial ladder sleeve that is equipped with respectively of permanent magnet both sides, the telescopic outer wall of ladder be equipped with the cascaded surface, the cascaded surface of end terminal inner wall both sides correspond the cooperation with the cascaded surface of two ladder sleeve outer walls respectively, the gap is left to the centre, forms sealedly through pouring into magnetic fluid into. This sealing device simple structure, sealed seal pressure is strong.
Description
Technical field
This utility model belongs to sealing field of mechanical engineering, is specifically related to a kind of labyrinth type magnetic fluid seal device.
Background technology
Along with economical growing, sealing property is required more and more higher by the association areas such as industrial equipment, traditional sealing means is difficult to meet the seal request of some special occasions, the development of magnetic fluid technique has promoted the development of Magneticfluid Seal Technique, and Magneticfluid Seal Technique just plays an increasingly important role in field of sealing technology.Magnet fluid sealing development trend requires to need to improve sealing reliability and sealability.When common magnetic fluid seal device bears the pressure of outside more than its specified pressure-bearing, magnetic fluid seal lost efficacy, magnetic fluid leakage rate causes that more greatly its self-reparing capability is more weak, namely secondary bearing capacity is relatively low, thus reducing the reliability of magnetic fluid seal, the leakage therefore prolonging resistance magnetic fluid has great importance for the pressure performance and reliability thereof improving magnetic fluid seal.Existing sealing device is mostly straight-through labyrinth structure when injecting magnetic fluid, once leak, magnetic fluid leakage rate is relatively big, thus causing that the self-reparing capability of sealing device is more weak, significantly reduces the reliability of sealing.
Summary of the invention
The purpose of this utility model is to provide a kind of labyrinth type magnetic fluid seal device, not only solves the difficult problem that existing sealing device self-reparing capability is relatively low, can improve the pressure performance of common magnetic fluid seal device simultaneously, and then improve the reliability of magnetic fluid seal.
The technical solution of the utility model is as follows:
A kind of labyrinth type magnetic fluid seal device, including axle, shell, bearing, magnetism-isolating loop, ladder bushing, permanent magnet, pole shoe, sealing ring.
Described permanent magnet is torus, is installed on the middle part of axle；Described pole shoe is installed on outer casing inner wall, same being radially arranged of the inwall correspondence permanent magnet of pole shoe, the inwall of pole shoe and the outer wall axis coinciding of permanent magnet, being provided with space between inwall and the outer wall of permanent magnet of pole shoe, the inwall of pole shoe length in the axial direction is equal or slightly larger than the outer wall of permanent magnet length in the axial direction.
The both sides of described pole shoe inwall are provided with cascaded surface；The axle of described permanent magnet both sides is respectively equipped with ladder bushing；The outer wall of described ladder bushing is provided with cascaded surface；The cascaded surface corresponding matching of respectively with two ladder bushing outer walls of cascaded surface of described pole shoe inwall both sides, gap is left in centre, forms sealing by injecting magnetic fluid.
Described ladder bushing and the outside of pole shoe are respectively equipped with interior magnetism-isolating loop and outer magnetism-isolating loop, and described interior magnetism-isolating loop and outer magnetism-isolating loop are torus shape, and outer magnetism-isolating loop is located on outer casing inner wall, and interior magnetism-isolating loop is located on axle.
Described outer magnetism-isolating loop is identical with the axial length of interior magnetism-isolating loop, is positioned in the same radial position of axle.
The both sides of axle are located at by described bearing, are positioned at the outside of outer magnetism-isolating loop and magnetism-isolating loop.
On described pole shoe both sides cascaded surface with on the cascaded surface of ladder bushing the height of each ladder all identical.
Gap size between the cascaded surface of respectively and two ladder bushing outer walls of cascaded surface of described pole shoe inwall both sides is 0.1-3mm, forms radial seal by injecting magnetic fluid.
Described permanent magnet is axial charging type permanent magnet.
Described sealing ring is located in the groove on the cylindrical of pole shoe.
This utility model is by being designed as stairstepping by the partial outer face of pole shoe both sides and the outer surface of sleeve, realize labyrinth type magnetic fluid seal, it is tilt upward stepped owing to sealing structure structure, therefore when there is leakage, the leakage rate of magnetic fluid can be reduced, magnetic fluid also functions to prolong the purpose of resistance leakage simultaneously.This utility model overcomes the difficult problem that existing sealing device self-reparing capability is relatively low, the left and right sides at permanent magnet, it is symmetrical arranged ladder bushing and not only greatly reduces the loss of magnetic fluid when seal failure, also improve the voltage endurance capability of magnetic fluid seal, expand its range of safety operation.This sealing device is easily installed and dismantles.
Accompanying drawing explanation
Accompanying drawing 1 is labyrinth type magnetic fluid seal device schematic diagram.
In figure, the title of each sequence number sign and correspondence thereof is as follows: 1-axle, 2-shell, 3-bearing, the outer magnetism-isolating loop of 4-, magnetism-isolating loop in 5-, 6-ladder bushing, 7-permanent magnet, 8-pole shoe, 9-end cap, 10-sealing ring.
Detailed description of the invention
The utility model is described in further detail to utilize embodiment below in conjunction with accompanying drawing.
Embodiment 1
As it is shown in figure 1, a kind of labyrinth type magnetic fluid seal device, including axle 1, shell 2, bearing 3, magnetism-isolating loop, ladder bushing 6, permanent magnet 7, pole shoe 8, sealing ring 10.
Permanent magnet 7 is torus, is installed on the middle part of axle 1；Pole shoe 8 is installed on shell 2 inwall, the same of inwall correspondence permanent magnet 7 of pole shoe 8 is radially arranged, the inwall of pole shoe 8 and the outer wall axis coinciding of permanent magnet 7, being provided with space between inwall and the outer wall of permanent magnet 7 of pole shoe 8, the inwall of pole shoe 8 length in the axial direction is equal or slightly larger than the outer wall of permanent magnet 7 length in the axial direction；Sealing ring 10 is located in the groove on the cylindrical of pole shoe 6；Permanent magnet 7 is axial charging type permanent magnet.
The both sides of pole shoe 8 inwall are provided with cascaded surface；The axle 1 of permanent magnet 7 both sides is respectively equipped with ladder bushing 6；The outer wall of ladder bushing 6 is provided with cascaded surface；The cascaded surface corresponding matching of respectively with two ladder bushing 6 outer walls of the cascaded surface of pole shoe 8 inwall both sides, gap is left in centre, forms sealing by injecting magnetic fluid.
The outside of ladder bushing 6 and pole shoe 8 is respectively equipped with interior magnetism-isolating loop 5 and outer magnetism-isolating loop 4, interior magnetism-isolating loop 5 and outer magnetism-isolating loop 4 in torus shape, and outer magnetism-isolating loop 4 is located on shell 2 inwall, and interior magnetism-isolating loop 5 is located on axle 1.
Outer magnetism-isolating loop 4 is identical with the axial length of interior magnetism-isolating loop 5, is positioned in the same radial position of axle 1.
The both sides of axle 1 are located at by bearing 3, are positioned at the outside of outer magnetism-isolating loop 4 and magnetism-isolating loop 5.
On the cascaded surface of pole shoe 8 both sides with on the cascaded surface of ladder bushing 6 the height of each ladder all identical.
Gap size between the cascaded surface of respectively and two ladder bushing 6 outer walls of the cascaded surface of pole shoe 8 inwall both sides is 0.1mm, forms radial seal by injecting magnetic fluid.
Embodiment 2
As it is shown in figure 1, a kind of labyrinth type magnetic fluid seal device, including axle 1, shell 2, bearing 3, magnetism-isolating loop, ladder bushing 6, permanent magnet 7, pole shoe 8, sealing ring 10.
Permanent magnet 7 is torus, is installed on the middle part of axle 1；Pole shoe 8 is installed on shell 2 inwall, the same of inwall correspondence permanent magnet 7 of pole shoe 8 is radially arranged, the inwall of pole shoe 8 and the outer wall axis coinciding of permanent magnet 7, being provided with space between inwall and the outer wall of permanent magnet 7 of pole shoe 8, the inwall of pole shoe 8 length in the axial direction is equal or slightly larger than the outer wall of permanent magnet 7 length in the axial direction；Sealing ring 10 is located in the groove on the cylindrical of pole shoe 6；Permanent magnet 7 is axial charging type permanent magnet.
The both sides of pole shoe 8 inwall are provided with cascaded surface；The axle 1 of permanent magnet 7 both sides is respectively equipped with ladder bushing 6；The outer wall of ladder bushing 6 is provided with cascaded surface；The cascaded surface corresponding matching of respectively with two ladder bushing 6 outer walls of the cascaded surface of pole shoe 8 inwall both sides, gap is left in centre, forms sealing by injecting magnetic fluid.
The outside of ladder bushing 6 and pole shoe 8 is respectively equipped with interior magnetism-isolating loop 5 and outer magnetism-isolating loop 4, interior magnetism-isolating loop 5 and outer magnetism-isolating loop 4 in torus shape, and outer magnetism-isolating loop 4 is located on shell 2 inwall, and interior magnetism-isolating loop 5 is located on axle 1.
Outer magnetism-isolating loop 4 is identical with the axial length of interior magnetism-isolating loop 5, is positioned in the same radial position of axle 1.
The both sides of axle 1 are located at by bearing 3, are positioned at the outside of outer magnetism-isolating loop 4 and magnetism-isolating loop 5.
On the cascaded surface of pole shoe 8 both sides with on the cascaded surface of ladder bushing 6 the height of each ladder all identical.
Gap size between the cascaded surface of respectively and two ladder bushing 6 outer walls of the cascaded surface of pole shoe 8 inwall both sides is 1.5mm, forms radial seal by injecting magnetic fluid.
Embodiment 3
As it is shown in figure 1, a kind of labyrinth type magnetic fluid seal device, including axle 1, shell 2, bearing 3, magnetism-isolating loop, ladder bushing 6, permanent magnet 7, pole shoe 8, sealing ring 10.
Permanent magnet 7 is torus, is installed on the middle part of axle 1；Pole shoe 8 is installed on shell 2 inwall, the same of inwall correspondence permanent magnet 7 of pole shoe 8 is radially arranged, the inwall of pole shoe 8 and the outer wall axis coinciding of permanent magnet 7, being provided with space between inwall and the outer wall of permanent magnet 7 of pole shoe 8, the inwall of pole shoe 8 length in the axial direction is equal or slightly larger than the outer wall of permanent magnet 7 length in the axial direction；Sealing ring 10 is located in the groove on the cylindrical of pole shoe 6；Permanent magnet 7 is axial charging type permanent magnet.
The both sides of pole shoe 8 inwall are provided with cascaded surface；The axle 1 of permanent magnet 7 both sides is respectively equipped with ladder bushing 6；The outer wall of ladder bushing 6 is provided with cascaded surface；The cascaded surface corresponding matching of respectively with two ladder bushing 6 outer walls of the cascaded surface of pole shoe 8 inwall both sides, gap is left in centre, forms sealing by injecting magnetic fluid.
The outside of ladder bushing 6 and pole shoe 8 is respectively equipped with interior magnetism-isolating loop 5 and outer magnetism-isolating loop 4, interior magnetism-isolating loop 5 and outer magnetism-isolating loop 4 in torus shape, and outer magnetism-isolating loop 4 is located on shell 2 inwall, and interior magnetism-isolating loop 5 is located on axle 1.
Outer magnetism-isolating loop 4 is identical with the axial length of interior magnetism-isolating loop 5, is positioned in the same radial position of axle 1.
The both sides of axle 1 are located at by bearing 3, are positioned at the outside of outer magnetism-isolating loop 4 and magnetism-isolating loop 5.
On the cascaded surface of pole shoe 8 both sides with on the cascaded surface of ladder bushing 6 the height of each ladder all identical.
Gap size between the cascaded surface of respectively and two ladder bushing 6 outer walls of the cascaded surface of pole shoe 8 inwall both sides is 3mm, forms radial seal by injecting magnetic fluid.
Labyrinth type magnetic fluid seal device of the present utility model, its installation process is as follows: be respectively arranged in by sealing ring 10 in the groove on pole shoe 8 periphery；Ladder bushing 6 is installed in the left side of permanent magnet 7, and permanent magnet 7 and ladder bushing 6 are installed to pole shoe 8 from left side；Ladder bushing 6 is installed on the right side of pole shoe 8 again；Magnetic fluid is injected separately on the outer surface of ladder bushing 6 of the left and right sides, utilizes the ladder on pole shoe 8 inwall both sides to form labyrinth seal with the ladder on ladder bushing 6 outer wall；Above-mentioned parts are installed on axle 1；Left and right side at pole shoe 8 installs outer magnetism-isolating loop 4, magnetism-isolating loop 5 in the axle 1 outside ladder bushing 6 is installed；Bearing 3 is separately mounted on the axle 1 outside interior magnetism-isolating loop 5；Again shell 2 is enclosed within the outer surface of above-mentioned parts, threadeds compression by the right-hand member of end cap 9 with shell 2 and be positioned at the outer ring of bearing 3 on right side.
Claims (8)
1. a labyrinth type magnetic fluid seal device, including axle (1), shell (2), bearing (3), magnetism-isolating loop, ladder bushing (6), permanent magnet (7), pole shoe (8), sealing ring (10), it is characterised in that:
Described permanent magnet (7) is torus, is installed on the middle part of axle (1)；Described pole shoe (8) is installed on the inwall of shell (2), same being radially arranged of inwall correspondence permanent magnet (7) of pole shoe (8), the inwall of pole shoe (8) and the outer wall axis coinciding of permanent magnet (7), being provided with space between inwall and the outer wall of permanent magnet (7) of pole shoe (8), the inwall of pole shoe (8) length in the axial direction is equal or slightly larger than the outer wall of permanent magnet (7) length in the axial direction；
The both sides of described pole shoe (8) inwall are provided with cascaded surface；The axle (1) of described permanent magnet (7) both sides is respectively equipped with ladder bushing (6)；The outer wall of described ladder bushing (6) is provided with cascaded surface；The cascaded surface corresponding matching of respectively with two ladder bushing (6) outer walls of the cascaded surface of described pole shoe (8) inwall both sides, gap is left in centre, forms sealing by injecting magnetic fluid.
2. a kind of labyrinth type magnetic fluid seal device as claimed in claim 1, it is characterized in that: described ladder bushing (6) and the outside of pole shoe (8) are respectively equipped with interior magnetism-isolating loop (5) and outer magnetism-isolating loop (4), described interior magnetism-isolating loop (5) and outer magnetism-isolating loop (4) are in torus shape, outer magnetism-isolating loop (4) is located on shell (2) inwall, and interior magnetism-isolating loop (5) is located on axle (1).
3. a kind of labyrinth type magnetic fluid seal device as claimed in claim 2, it is characterised in that: described outer magnetism-isolating loop (4) is identical with the axial length of interior magnetism-isolating loop (5), is positioned in the same radial position of axle (1).
4. a kind of labyrinth type magnetic fluid seal device as claimed in claim 3, it is characterised in that: the both sides of axle (1) are located at by described bearing (3), are positioned at outer magnetism-isolating loop (4) and the outside of magnetism-isolating loop (5).
5. a kind of labyrinth type magnetic fluid seal device as claimed in claim 1, it is characterised in that: all identical with the height of each ladder on the cascaded surface of ladder bushing (6) on described pole shoe (8) both sides cascaded surface.
6. a kind of labyrinth type magnetic fluid seal device as claimed in claim 3, it is characterized in that: the gap size between the cascaded surface of respectively and two ladder bushing (6) outer walls of the cascaded surface of described pole shoe (8) inwall both sides is 0.1-3mm, form radial seal by injecting magnetic fluid.
7. a kind of labyrinth type magnetic fluid seal device as claimed in claim 1, it is characterised in that: described permanent magnet (7) is axial charging type permanent magnet.
8. a kind of labyrinth type magnetic fluid seal device as claimed in claim 1, it is characterised in that: described sealing ring (10) is located in the groove on the cylindrical of pole shoe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620156274.4U CN205401722U (en) | 2016-03-02 | 2016-03-02 | Labyrinth type magnetic fluid seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620156274.4U CN205401722U (en) | 2016-03-02 | 2016-03-02 | Labyrinth type magnetic fluid seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205401722U true CN205401722U (en) | 2016-07-27 |
Family
ID=56947992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620156274.4U Withdrawn - After Issue CN205401722U (en) | 2016-03-02 | 2016-03-02 | Labyrinth type magnetic fluid seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205401722U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570465A (en) * | 2016-03-02 | 2016-05-11 | 广西科技大学 | Labyrinth type magnetic fluid sealing device |
| CN107842613A (en) * | 2017-12-13 | 2018-03-27 | 广西科技大学 | A kind of arc step formula device for sealing magnetic fluid |
| CN108468811A (en) * | 2018-02-11 | 2018-08-31 | 广西科技大学 | A kind of magnetic fluid sealing structure |
| CN108869753A (en) * | 2018-08-13 | 2018-11-23 | 广西科技大学 | A kind of magnetic fluid sealing structure |
| PL423350A1 (en) * | 2017-11-02 | 2019-05-06 | Akademia Gorniczo Hutnicza Im Stanislawa Staszica W Krakowie | Hybrid protective sealing for a rolling bearing |
| CN113187897A (en) * | 2021-06-18 | 2021-07-30 | 北京交通大学 | Magnetic liquid seal and labyrinth seal combined sealing device |
-
2016
- 2016-03-02 CN CN201620156274.4U patent/CN205401722U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570465A (en) * | 2016-03-02 | 2016-05-11 | 广西科技大学 | Labyrinth type magnetic fluid sealing device |
| CN105570465B (en) * | 2016-03-02 | 2018-11-27 | 广西科技大学 | A kind of labyrinth type magnetic fluid seal device |
| PL423350A1 (en) * | 2017-11-02 | 2019-05-06 | Akademia Gorniczo Hutnicza Im Stanislawa Staszica W Krakowie | Hybrid protective sealing for a rolling bearing |
| CN107842613A (en) * | 2017-12-13 | 2018-03-27 | 广西科技大学 | A kind of arc step formula device for sealing magnetic fluid |
| CN107842613B (en) * | 2017-12-13 | 2019-04-02 | 广西科技大学 | A kind of arc step formula device for sealing magnetic fluid |
| CN108468811A (en) * | 2018-02-11 | 2018-08-31 | 广西科技大学 | A kind of magnetic fluid sealing structure |
| CN108869753A (en) * | 2018-08-13 | 2018-11-23 | 广西科技大学 | A kind of magnetic fluid sealing structure |
| CN113187897A (en) * | 2021-06-18 | 2021-07-30 | 北京交通大学 | Magnetic liquid seal and labyrinth seal combined sealing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205401722U (en) | Labyrinth type magnetic fluid seal device | |
| CN105570465B (en) | A kind of labyrinth type magnetic fluid seal device | |
| CN103115152B (en) | Magnetic fluid and maze alternated type combined sealing | |
| CN106090238B (en) | A kind of staggered device for sealing magnetic fluid of split-type | |
| CN205401727U (en) | Symmetry type magnetic fluid seal device | |
| CN205401723U (en) | Cascaded magnetic fluid seal device of symmetry type | |
| CN106015586B (en) | A kind of stepped end-surface type magnetic fluid seal device | |
| CN106015360B (en) | A kind of labyrinth type device for sealing magnetic fluid | |
| CN106151526B (en) | A kind of split-type labyrinth type device for sealing magnetic fluid | |
| CN204164550U (en) | A kind of pipeline extension device of triple seal structure | |
| CN105570468A (en) | Symmetrical magnetic fluid sealing device | |
| CN106015585A (en) | Floating ring-magnetofluid sealing device | |
| CN105742861A (en) | Waterproof connection structure for radio-frequency connector | |
| CN205877002U (en) | Labyrinth device for sealing magnetic fluid | |
| CN203711867U (en) | Rotor braking device | |
| CN205663888U (en) | Many magnetic sources terminal surface formula magnetic fluid seal device | |
| CN204381412U (en) | A kind of speed electric rolling-ball main shaft body | |
| CN103486308B (en) | A kind of used at ultra-low temperature vacuum protective valve | |
| CN207368776U (en) | Electronic water pump rotor assembly and electronic water pump | |
| CN205824189U (en) | A kind of symmetric form bayonet-type magnetic fluid seal device | |
| CN206386270U (en) | A kind of vacuum pump full floating sealing structure | |
| CN205383316U (en) | Joint voltage limiting valve | |
| CN205122880U (en) | Gas tightness DIN type connector structure | |
| CN205663889U (en) | Tandem type terminal surface formula magnetic fluid seal device | |
| CN205212620U (en) | Sealing member of motor shaft through wires hole |
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: 20160727 Effective date of abandoning: 20181127 |