CN102537366B - Sealing method for split type magnetic liquid sealing device - Google Patents
Sealing method for split type magnetic liquid sealing device Download PDFInfo
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- CN102537366B CN102537366B CN201210002161.5A CN201210002161A CN102537366B CN 102537366 B CN102537366 B CN 102537366B CN 201210002161 A CN201210002161 A CN 201210002161A CN 102537366 B CN102537366 B CN 102537366B
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- pole shoe
- magnetic liquid
- sealing
- stainless steel
- gap
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Abstract
A sealing method for split type magnetic liquid sealing device belongs to the field of mechanical engineering sealing, and solves the problems that as the present large-diameter magnetic liquid rotation sealing device applies sealant at the jointed surface of a two-flap structure, the redundant sealant is extruded out after installation and remains on pole teeth at the inner circles of pole shoes, and uneven application influences the sealing performance at the same time. The sealing method is realized as follows: a stainless steel sheet is heated and kept at a temperature between 300 DEG C and 35 DEG C; the stainless steel sheet is stuck into a clearance between a sealing shaft and the pole teeth of the pole shoes; the stainless steel starts from a point at the jointed clearance between two half-pole shoes, and moves along the circumferences of the half-pole shoes to return the start point, so that the sealant extruded from the jointed surfaces of the pole shoes is vaporized; the thickness of the stainless steel sheet is smaller than the clearance between the sealing shaft and the pole teeth of the pole shoes, so as to enable the stainless steel sheet to stick into the clearance; a medical injector is used for sucking magnetic liquid at the jointed clearance between the two half-casings of the split type magnetic liquid sealing device, and the injector starts from a point at the jointed clearance, and continuously injects the magnetic liquid along the circumferences till returning the start point.
Description
Technical field
The invention belongs to sealing field of mechanical engineering.
Background technique
Shell and pole shoe in existing major diameter magnetic fluid seal device adopt split structure conventionally.On the junction plane of two valve structures, smear enough sealers to guarantee the sealability of junction plane separately at it.But owing to smearing the bad grasp of amount of sealer, tend to make unnecessary sealer to be extruded after installation, remain on the utmost point tooth of pole shoe inner circle, that smears is inhomogeneous simultaneously, affects sealability.
Summary of the invention
The technical issues that need to address of the present invention are, existing major diameter magnetic liquid rotating sealing device is smeared sealer at the junction plane place of two valve structures, after installation, tend to make unnecessary sealer to be extruded, remain on the utmost point tooth of pole shoe inner circle, that smears is inhomogeneous simultaneously, affects the problem of sealability.
The technical solution adopted for the present invention to solve the technical problems is:
The encapsulating method of Split magnetic liquid sealing device, sealing method comprises:
Two half-shells are buckled on the axle of required sealing, two half-shells are connected with bolt and nut, on its junction plane, smear sealer, form shell;
Two halves pole shoe is buckled on the axle of required sealing, two halves pole shoe is coupled together with bolt and nut, on its junction plane, smear sealer, form left pole shoe;
Other two halves pole shoe is buckled on the axle of required sealing, two halves pole shoe is coupled together with bolt and nut, on its junction plane, smear sealer, form right pole shoe;
The first rubber seal is embedded in the Baltimore groove on left pole shoe periphery, the second rubber seal is embedded in the Baltimore groove on right pole shoe periphery;
Successively the left pole shoe with rubber seal, permanent magnet and the right pole shoe with rubber seal are coaxially installed together, each faying surface is sticky glutinous with adhesive, composition black box;
Black box is pushed in the endoporus of shell, by screw and being threaded on shell, end cap is fixed on shell, make black box axial restraint, form Split magnetic liquid sealing device;
Heating stainless steel thin slice makes it keep 300 ℃～350 ℃ of temperature, stainless steel thin slice is stretched in the gap of seal shaft and pole shoe utmost point tooth, a bit from two halves pole shoe in conjunction with gap, connect mobile along its circumference, until starting point, the sealer vaporization that pole shoe junction plane is extruded;
The thickness of stainless steel thin slice is less than the gap of seal shaft and pole shoe utmost point tooth, and thin slice can be stretched in gap;
The combination gap place of two half-shells of Split magnetic liquid sealing device, draws magnetic liquid with injector for medical purpose, from a bit in conjunction with gap, injects continuously magnetic liquid along its circumference, until starting point.
The present invention compares had beneficial effect with prior art:
Utilize the high temperature stainless steel thin slice of heating to make unnecessary sealer vaporization, guaranteed the complete of seal clearance, improved sealing reliability.Draw magnetic liquid with injector for medical purpose, inject the gap of two half-shells junction planes, filled up the gap that between junction plane, gluing forms, guaranteed sealing.
Accompanying drawing explanation
The plan view of Fig. 1 Split magnetic liquid sealing device.
The A-A partial sectional view of Fig. 2 Fig. 1.
The I partial enlarged drawing of Fig. 3 Fig. 2.
In figure: the combination gap place 9 of shell 1, left pole shoe 2, permanent magnet 3, right pole shoe 4, end cap 5, screw 6, the second rubber seal 7, the first rubber seal 8, shell.
Embodiment
The encapsulating method of Split magnetic liquid sealing device, sealing method comprises:
Two half-shells are buckled on the axle of required sealing, two half-shells are connected with bolt and nut, on its junction plane, smear sealer, form shell 1;
Two halves pole shoe is buckled on the axle of required sealing, two halves pole shoe is coupled together with bolt and nut, on its junction plane, smear sealer, form left pole shoe 2;
Other two halves pole shoe is buckled on the axle of required sealing, two halves pole shoe is coupled together with bolt and nut, on its junction plane, smear sealer, form right pole shoe 4;
The first rubber seal 8 is embedded in the Baltimore groove on left pole shoe 2 peripheries, the second rubber seal 7 is embedded in the Baltimore groove on right pole shoe 4 peripheries;
Successively the left pole shoe 2 with rubber seal, permanent magnet 3 and the right pole shoe 4 with rubber seal are coaxially installed together, each faying surface is sticky glutinous with adhesive, composition black box;
Black box is pushed in the endoporus of shell 1, by screw 6 and being threaded on shell, end cap 5 is fixed on shell 1, make black box axial restraint, form Split magnetic liquid sealing device;
Heating stainless steel thin slice makes it keep 300 ℃～350 ℃ of temperature, stainless steel thin slice is stretched in the gap of seal shaft and pole shoe utmost point tooth, a bit from two halves pole shoe in conjunction with gap, connect mobile along its circumference, until starting point, the sealer vaporization that pole shoe junction plane is extruded; The temperature of heating stainless steel thin slice remain on 300 ℃～350 ℃ of numerical value two end values and between arbitrary value, all can reach the object of sealer vaporization.
The thickness of stainless steel thin slice is less than the gap of seal shaft and pole shoe utmost point tooth, and thin slice can be stretched in gap;
The combination gap place 9 of two half-shells of Split magnetic liquid sealing device, as Fig. 2,3, draws magnetic liquid with injector for medical purpose, from a bit in conjunction with gap, injects continuously magnetic liquid along its circumference, until starting point.
The plan view of Fig. 1 Split magnetic liquid sealing device.
Claims (1)
1. the encapsulating method of Split magnetic liquid sealing device, sealing method comprises:
Two half-shells are buckled on the axle of required sealing, two half-shells are connected with bolt and nut, on its junction plane, smear sealer, form shell (1);
Two halves pole shoe is buckled on the axle of required sealing, two halves pole shoe is coupled together with bolt and nut, on its junction plane, smear sealer, form left pole shoe (2);
Other two halves pole shoe is buckled on the axle of required sealing, two halves pole shoe is coupled together with bolt and nut, on its junction plane, smear sealer, form right pole shoe (4);
The first rubber seal (8) is embedded in the Baltimore groove on left pole shoe (2) periphery, the second rubber seal (7) is embedded in the Baltimore groove on right pole shoe (4) periphery;
Successively the left pole shoe (2) with rubber seal, permanent magnet (3) and the right pole shoe (4) with rubber seal are coaxially installed together, each faying surface is sticky glutinous with adhesive, composition black box;
Black box is pushed in the endoporus of shell (1), by screw (6) and being threaded on shell, end cap (5) is fixed on to shell (1) upper, make black box axial restraint, form Split magnetic liquid sealing device;
It is characterized in that:
Heating stainless steel thin slice makes it keep 300 ℃ ~ 350 ℃ of temperature, stainless steel thin slice is stretched in the gap of seal shaft and pole shoe utmost point tooth, a bit from two halves pole shoe in conjunction with gap, along its circumference continuous moving, until starting point, the sealer vaporization that pole shoe junction plane is extruded;
The thickness of stainless steel thin slice is less than the gap of seal shaft and pole shoe utmost point tooth, and thin slice can be stretched in gap;
The combination gap place (9) of two half-shells of Split magnetic liquid sealing device, draws magnetic liquid with injector for medical purpose, from a bit in conjunction with gap, injects continuously magnetic liquid along its circumference, until starting point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210002161.5A CN102537366B (en) | 2012-01-05 | 2012-01-05 | Sealing method for split type magnetic liquid sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210002161.5A CN102537366B (en) | 2012-01-05 | 2012-01-05 | Sealing method for split type magnetic liquid sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102537366A CN102537366A (en) | 2012-07-04 |
| CN102537366B true CN102537366B (en) | 2014-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201210002161.5A Expired - Fee Related CN102537366B (en) | 2012-01-05 | 2012-01-05 | Sealing method for split type magnetic liquid sealing device |
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| CN (1) | CN102537366B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133699B (en) * | 2013-02-07 | 2015-04-15 | 北京交通大学 | Method for improving sealing pressure endurance capability of large-gap sectioning type magnetic liquid |
| CN103133698B (en) * | 2013-02-07 | 2015-04-15 | 北京交通大学 | Method of changing sealing clearances of split type magnetic liquid |
| CN103133700B (en) * | 2013-03-21 | 2015-09-30 | 北京交通大学 | A kind of magnetic liquid rotating sealing device |
| CN103234049B (en) * | 2013-04-12 | 2015-10-28 | 北京交通大学 | Improve the sealing reliability of Split magnetic liquid sealing device and the method in life-span |
| CN103670456B (en) * | 2013-11-20 | 2016-01-20 | 中国矿业大学 | A kind of hydraulic prop for mine of magnetic fluid sealing |
| CN103925370B (en) * | 2014-04-29 | 2016-01-20 | 北京交通大学 | Add the magnetic fluid seal device of magnetic fat |
| CN104089022B (en) * | 2014-07-04 | 2015-07-22 | 北京交通大学 | Modified split type magnetic liquid sealing device |
| CN104534100B (en) * | 2015-01-08 | 2015-10-28 | 北京交通大学 | Improve high linear speed and the new method in stationary magnetic hydraulic seal life-span |
| CN109780219B (en) * | 2019-03-08 | 2020-09-29 | 石家庄学院 | Split type shell structure, magnetic liquid sealing device and shell sealing method |
| CN112431928B (en) * | 2020-11-25 | 2022-09-23 | 清华大学 | Magnetic liquid sealing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4598914A (en) * | 1982-02-10 | 1986-07-08 | Nippon Seiko K.K. | Sealing and bearing means by use of ferrofluid |
| US4708350A (en) * | 1985-07-24 | 1987-11-24 | Hitachi, Ltd. | Magnetic liquid seal with magnetized deformable magnet |
| DE69721549T2 (en) * | 1996-10-02 | 2004-04-08 | Rigaku/usa, Inc., Danvers | FERROFLUID SEALING |
| JP2005163895A (en) * | 2003-12-02 | 2005-06-23 | Eagle Ind Co Ltd | Magnetic fluid seal device |
-
2012
- 2012-01-05 CN CN201210002161.5A patent/CN102537366B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4598914A (en) * | 1982-02-10 | 1986-07-08 | Nippon Seiko K.K. | Sealing and bearing means by use of ferrofluid |
| DE3304623C2 (en) * | 1982-02-10 | 1989-12-28 | Nippon Seiko K.K., Tokio/Tokyo, Jp | |
| US4708350A (en) * | 1985-07-24 | 1987-11-24 | Hitachi, Ltd. | Magnetic liquid seal with magnetized deformable magnet |
| EP0210527B1 (en) * | 1985-07-24 | 1990-06-06 | Hitachi, Ltd. | Magnetic liquid seal |
| DE69721549T2 (en) * | 1996-10-02 | 2004-04-08 | Rigaku/usa, Inc., Danvers | FERROFLUID SEALING |
| JP2005163895A (en) * | 2003-12-02 | 2005-06-23 | Eagle Ind Co Ltd | Magnetic fluid seal device |
Non-Patent Citations (2)
| Title |
|---|
| 新型2000L混捏机轴头密封用填料压盖的改进设计;时新江;《矿山机械》;20060330;第34卷(第3期);119 * |
| 时新江.新型2000L混捏机轴头密封用填料压盖的改进设计.《矿山机械》.2006,第34卷(第3期),119. |
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| CN102537366A (en) | 2012-07-04 |
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Granted publication date: 20140709 Termination date: 20200105 |