CN108679232B - Magnetic liquid sealing device adapting to axial and radial displacement of joint - Google Patents
Magnetic liquid sealing device adapting to axial and radial displacement of joint Download PDFInfo
- Publication number
- CN108679232B CN108679232B CN201810725735.9A CN201810725735A CN108679232B CN 108679232 B CN108679232 B CN 108679232B CN 201810725735 A CN201810725735 A CN 201810725735A CN 108679232 B CN108679232 B CN 108679232B
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- China
- Prior art keywords
- sealing ring
- rubber sealing
- ring
- clamping plate
- pole shoe
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- 238000007789 sealing Methods 0.000 title claims abstract description 183
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 64
- 239000007788 liquid Substances 0.000 title claims abstract description 62
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 28
- 230000005389 magnetism Effects 0.000 claims description 24
- 238000005096 rolling process Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 10
- 239000000696 magnetic material Substances 0.000 claims description 4
- 239000011553 magnetic fluid Substances 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 7
- 239000004020 conductor Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- VQAPWLAUGBBGJI-UHFFFAOYSA-N [B].[Fe].[Rb] Chemical compound [B].[Fe].[Rb] VQAPWLAUGBBGJI-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention discloses a magnetic liquid sealing device adapting to axial and radial displacement of a joint, which comprises: an end cap; the first clamping plate with the rubber sealing ring is fixed on the end cover through a first screw and a second screw; the second clamping plate with the rubber sealing ring is arranged in the groove of the end cover; the basic sealing structure is fixed on the second clamping plate with the rubber sealing ring through the third screw and the fourth screw, so that the basic sealing structure is isolated from the end cover through the first clamping plate with the rubber sealing ring and the second clamping plate with the rubber sealing ring. The device separates the component and the magnetic liquid sealing structure which are connected through the two clamping plates, so that the axial and radial deformation and displacement of the connecting component can not be loaded on the parts in the magnetic liquid basic sealing structure, and the service life of the magnetic liquid sealing can be prolonged.
Description
Technical Field
The invention relates to the technical field of mechanical engineering sealing, in particular to a magnetic liquid sealing device which is suitable for axial and radial displacement of a joint.
Background
The magnetic liquid is a novel functional material with the fluidity of the liquid and the response characteristic of the solid magnetic material to the magnetic field, and has wide application in the engineering field, wherein the magnetic liquid sealing is one of the numerous applications of the magnetic liquid. The magnetic liquid sealing technology has the advantages of zero leakage, no abrasion, long service life, convenient maintenance and the like, and is widely applied to different sealing occasions in various industries. In the fields of chemical industry and the like, the magnetic liquid sealing device is often connected with structures such as end covers or flanges with large diameters, the diameters of the structures such as the end covers or the flanges are large, and large deformation can occur when the structures are stressed or heated, so that axial or radial displacement can occur at the connecting part of the magnetic liquid sealing device, the parts of the magnetic liquid sealing device are subjected to large axial force or radial force, the performance of the magnetic liquid sealing device in use is affected, and the service life of the magnetic liquid sealing device is shortened.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent.
Therefore, the invention aims to provide a magnetic liquid sealing device which is suitable for axial and radial displacement of a connecting part, and the device ensures that the axial and radial deformation and displacement of a connecting part cannot be loaded on parts in a magnetic liquid basic sealing structure, so that the service life of the magnetic liquid sealing can be prolonged.
To achieve the above object, according to one aspect of the present invention, there is provided a magnetic liquid sealing apparatus adapted to axial and radial displacement of a joint, comprising: an end cap; the first clamping plate with the rubber sealing ring is fixed on the end cover through a first screw and a second screw, wherein the first clamping plate with the rubber sealing ring comprises a first rubber sealing ring and a first clamping plate, and the first rubber sealing ring is arranged in a groove of the first clamping plate; the second clamping plate with the rubber sealing ring is arranged in the groove of the end cover, wherein the second clamping plate with the rubber sealing ring comprises a second rubber sealing ring, a third rubber sealing ring and a second clamping plate, and the second rubber sealing ring and the third rubber sealing ring are arranged in the groove of the second clamping plate; the basic sealing structure is fixed on the second clamping plate with the rubber sealing ring through a third screw and a fourth screw, so that the first clamping plate with the rubber sealing ring and the second clamping plate with the rubber sealing ring are isolated from the end cover through the first clamping plate with the rubber sealing ring and the second clamping plate with the rubber sealing ring.
According to the magnetic liquid sealing device adapting to axial and radial displacement of the joint, the parts connected with the magnetic liquid sealing structure are isolated through the two clamping plates, so that the axial and radial displacement of the joint caused by the axial and radial deformation or displacement of structures such as an end cover or a flange connected with the magnetic liquid sealing structure is overcome, the axial and radial deformation and displacement of the connecting parts cannot be loaded on parts in the magnetic liquid basic sealing structure, and the service life of the magnetic liquid sealing can be prolonged.
In addition, the magnetic liquid sealing device adapting to axial and radial displacement of the joint according to the above embodiment of the present invention may further have the following additional technical features:
further, in one embodiment of the present invention, the basic sealing structure further includes: the shell is internally provided with a fourth rubber sealing ring and a fifth rubber sealing ring; the shaft sleeve with the sealing group is arranged in the shell, wherein the shaft sleeve with the sealing group comprises a right rolling bearing, a right magnetism isolating ring, a right pole shoe with a rubber sealing ring, an annular permanent magnet, a left pole shoe with a rubber sealing ring, a left magnetism isolating ring, a left rolling bearing and a shaft sleeve, and the right rolling bearing, the right magnetism isolating ring, the right pole shoe with the rubber sealing ring, the annular permanent magnet, the left pole shoe with the rubber sealing ring, the left magnetism isolating ring and the left rolling bearing are sequentially sleeved outside the shaft sleeve; the left end ring is sleeved on one side of the shaft sleeve with the sealing group, and is rotationally screwed into threads on the inner wall of the shell; and the right end ring is sleeved on the other side of the outer side of the shaft sleeve with the sealing group, and the first set screw and the second set screw are screwed in.
Further, in one embodiment of the present invention, the right pole piece with the rubber seal ring comprises a sixth rubber seal ring and a right pole piece, wherein the sixth rubber seal ring is installed in a groove of the right pole piece; the left pole shoe with the rubber sealing ring comprises a seventh rubber sealing ring and a left pole shoe, and the seventh rubber sealing ring is arranged in a groove of the left pole shoe.
Further, in one embodiment of the present invention, the left pole shoe and the right pole shoe are made of magnetic conductive materials, wherein pole teeth and tooth grooves are machined on the inner walls of the left pole shoe and the right pole shoe, the number of the pole teeth of each pole shoe is 2 to 10, the width of the pole teeth is at least 0.3mm, and the width of the tooth grooves is at least 0.5mm.
Further, in one embodiment of the invention, a sealing gap between the left pole shoe with the rubber sealing ring, the right pole shoe with the rubber sealing ring and the shaft sleeve is 0.001 to 1mm, and magnetic liquid is filled in the sealing gap to realize dynamic sealing.
Further, in an embodiment of the present invention, the materials of the left magnetism isolating ring, the right magnetism isolating ring and the housing are non-magnetic materials.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic structural view of a magnetic liquid seal adapted for axial and radial displacement of a joint according to one embodiment of the present invention.
Reference numerals illustrate:
the magnetic liquid sealing device 10, the end cover 100, the first clamping plate 200 with the rubber sealing ring, the first screw 201, the second screw 202, the first rubber sealing ring 210, the first clamping plate 220, the second clamping plate 300 with the rubber sealing ring, the second rubber sealing ring 310, the third rubber sealing ring 320, the second clamping plate 330, the third screw 401, the fourth screw 402, the sixth rubber sealing ring 403, the right pole piece 404, the seventh rubber sealing ring 405, the left pole piece 406, the shell 410, the fourth rubber sealing ring 411, the fifth rubber sealing ring 412, the right rolling bearing 421, the right magnetism isolating ring 422, the right pole piece 423 with the rubber sealing ring, the annular permanent magnet 424, the left pole piece 425 with the rubber sealing ring, the left magnetism isolating ring 426, the left rolling bearing 427, the shaft sleeve 428, the left end ring 430, the right end ring 440, the first set screw 441 and the second set screw 442.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
A magnetic liquid seal device adapted for axial and radial displacement of a joint according to an embodiment of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a schematic illustration of a magnetic liquid seal adapted for axial and radial displacement of a joint in accordance with one embodiment of the present invention.
As shown in fig. 1, the magnetic liquid seal 10 that accommodates axial and radial displacement of the joint includes: an end cap 100, a first clamping plate 200 with rubber sealing rings, a second clamping plate 300 with rubber sealing rings, and a basic sealing structure 400 (not specifically identified in the figures).
Wherein the end cap 100. The first clamping plate 200 with the rubber sealing ring is fixed on the end cover 100 through the first screw 201 and the second screw 202, wherein the first clamping plate 200 with the rubber sealing ring comprises a first rubber sealing ring 210 and a first clamping plate 220, and the first rubber sealing ring 210 is installed in a groove of the first clamping plate 220. The second clamping plate 300 with the rubber sealing ring is installed in the groove of the end cover 100, wherein the second clamping plate 300 with the rubber sealing ring comprises a second rubber sealing ring 310, a third rubber sealing ring 320 and a second clamping plate 330, and the second rubber sealing ring 310 and the third rubber sealing ring 320 are installed in the groove of the second clamping plate 330. The basic sealing structure 400 is fixed to the second clamping plate 300 with rubber sealing ring by the third screw 401 and the fourth screw 402 to be isolated from the end cap 100 by the first clamping plate 200 with rubber sealing ring and the second clamping plate 300 with rubber sealing ring. According to the device 10 provided by the embodiment of the invention, the two clamping plates are used for isolating the connected parts and the magnetic liquid sealing structure, so that the axial and radial deformation and displacement of the connected parts cannot be loaded on parts in the magnetic liquid basic sealing structure, and the service life of the magnetic liquid sealing can be prolonged.
Specifically, as shown in FIG. 1, the embodiment of the present invention fits the second clamping plate 330 into the recess of the end cap 100; the third rubber sealing ring 310 and the fifth rubber sealing ring 320 are arranged in the groove of the second clamping plate 330; mounting the first rubber seal 210 in the groove of the first clamping plate 220 to form a first clamping plate 200 with the rubber seal; the first clamping plate 200 with the rubber sealing ring is fixed on the end cover 100 through the first screw 201 and the second screw 202; the basic sealing structure 400 is fixed to the second clamping plate 330 by the third screw 401 and the fourth screw 402.
When the device 10 of the embodiment of the present invention works, the magnetic liquid sealing basic sealing structure 400 is fixed on the structure such as the end cover 100 or the flange of the device to be sealed through the first clamping plate 220 and the second clamping plate 330, the structure such as the end cover 100 or the flange of the device to be sealed is isolated from the magnetic liquid sealing basic sealing structure 400, and the axial and radial deformation and displacement of the connecting component cannot be loaded on the parts in the magnetic liquid basic sealing structure 400, so that the service life of the magnetic liquid sealing can be prolonged;
further, in one embodiment of the present invention, the basic sealing structure 400 further includes: housing 410, sleeve 420 with a sealing set (not specifically identified in the figures), left end ring 430, and right end ring 440.
Wherein, a fourth rubber sealing ring 411 and a fifth rubber sealing ring 412 are arranged in the groove of the shell 410. The shaft sleeve 420 with the sealing group is arranged in the shell 410, wherein the shaft sleeve 420 with the sealing group comprises a right rolling bearing 421, a right magnetism isolating ring 422, a right pole shoe 423 with a rubber sealing ring, an annular permanent magnet 424, a left pole shoe 425 with a rubber sealing ring, a left magnetism isolating ring 426, a left rolling bearing 427 and a shaft sleeve 428, and the right rolling bearing 421, the right magnetism isolating ring 422, the right pole shoe 423 with the rubber sealing ring, the annular permanent magnet 424, the left pole shoe 425 with the rubber sealing ring, the left magnetism isolating ring 426 and the left rolling bearing 427 are sleeved outside the shaft sleeve 428 in sequence. The left end ring 430 is sleeved on one side of the shaft sleeve 420 with the sealing group and is screwed into threads on the inner wall of the shell. The right end 440 is looped around the other side of the sleeve with seal set and the first and second set screws 441, 442 are threaded.
In one embodiment of the present invention, the right pole piece 423 with the rubber sealing ring comprises a sixth rubber sealing ring 403 and a right pole piece 404, wherein the sixth rubber sealing ring 403 is installed in a groove of the right pole piece 404; the left pole piece 425 with rubber seal ring comprises a seventh rubber seal ring 405 and a left pole piece 406, the seventh rubber seal ring 405 is installed in the groove of the left pole piece 406.
Specifically, as shown in fig. 1, a sixth rubber seal 403 is installed in a groove of a right pole shoe 404 to form a right pole shoe 423 with a rubber seal, and a seventh rubber seal 405 is installed in a groove of a left pole shoe 406 to form a left pole shoe 425 with a rubber seal; the right rolling bearing 421, the right magnetism isolating ring 422, the right pole shoe 423 with the rubber sealing ring, the annular permanent magnet 424, the left pole shoe 425 with the rubber sealing ring, the left magnetism isolating ring 426 and the left rolling bearing 427 are sleeved on the outer side of the shaft sleeve 428 in sequence to form the shaft sleeve 420 with the sealing group; loading sleeve 420 with a sealing group into housing 410; the left end ring 430 is sleeved outside the shaft sleeve 420 and is screwed into the threads on the inner wall of the housing 410; the right end ring 440 is sleeved outside the shaft sleeve 420, and the first fastening screw 441 and the second fastening screw 442 are screwed in; the second rubber seal 411 and the fourth rubber seal 412 are mounted in the groove of the case 410, and thus the mounting of the magnetic liquid seal basic seal structure 400 is completed.
Further, in an embodiment of the present invention, the left pole piece 406 and the right pole piece 404 are made of magnetic conductive materials, wherein the inner walls of the left pole piece 406 and the right pole piece 406 are machined with pole teeth and tooth grooves, the number of the pole teeth of each pole piece is 2 to 10, the width of the pole teeth is at least 0.3mm, and the width of the tooth grooves is at least 0.5mm. That is, the width of the teeth is greater than 0.3mm and the tooth slot width is greater than 0.5mm.
Further, in an embodiment of the present invention, the materials of the left magnetism isolating ring 426, the right magnetism isolating ring 422, and the housing 410 are non-magnetic materials.
Specifically, the left magnetism isolating ring 426 and the right magnetism isolating ring 422 may have a circular ring structure, and the materials thereof are non-magnetically conductive materials, such as stainless steel, which are not limited herein.
Further, in one embodiment of the present invention, the sealing gap between the left pole piece 423 with rubber seal ring, the right pole piece 425 with rubber seal ring and the shaft sleeve 428 is 0.001 to 1mm, and the magnetic liquid is injected into the sealing gap to realize dynamic sealing.
That is, the sealing gap between the left pole piece 406, the right pole piece 404 and the shaft sleeve 428 may be selected from a range of 0.001-1 mm, wherein the materials of the left pole piece 406, the right pole piece 404 and the shaft sleeve 428 are materials with good magnetic conductivity, such as electrical pure iron, which can be set by those skilled in the art according to practical situations, and are not limited herein. The type of the magnetic liquid can be different in base carrier liquid according to different sealing gas and environmental temperature under actual working conditions, generally, ester base magnetic liquid, fluorocarbon base magnetic liquid or silicone oil base magnetic liquid can be selected for vacuum sealing, and silicone oil base magnetic liquid can be selected for low-temperature sealing.
Further, the left rolling bearing 427 and the right rolling bearing 421 can select different types of bearings according to axial and radial stress conditions under actual working conditions, such as deep groove ball bearings or angular contact ball bearings. The material of the ring permanent magnet 424 may be ferromagnetic, such as rubidium-iron-boron. The left end ring 430 may be a circular ring structure with threads machined on the outer side, and may be screwed with threads on the inner wall of the housing 410, and the threads may be tightened to axially position the parts on the sleeve. The right end ring 440 may be a circular ring structure with 2-6 threaded holes formed in the wall, and the magnetic liquid seal device, when in use, is connected to the shaft, and can clamp the shaft by the set screws in the respective threaded holes.
In summary, the device 10 of the embodiment of the invention isolates the connecting component and the magnetic liquid sealing structure through the clamping plate, and the axial and radial deformation and displacement of the connecting component cannot be loaded on the parts in the magnetic liquid sealing structure, so that the service life of the magnetic liquid sealing can be prolonged. Therefore, the problems that when the magnetic liquid sealing device is arranged on structures such as an end cover or a flange with a large diameter, the components in the magnetic liquid sealing structure are subjected to large axial force or radial force due to large deformation of the end cover or the flange when the end cover or the flange is stressed or heated and the sealing service life is shortened are effectively solved.
According to the magnetic liquid sealing device adapting to the axial and radial displacement of the joint, provided by the embodiment of the invention, the axial and radial displacement of the joint caused by the axial and radial deformation or displacement of the end cover, the flange and other structures connected with the magnetic liquid sealing structure is overcome through the parts and the magnetic liquid sealing structure which are connected by the two clamping plates in an isolated way, so that the axial and radial deformation and displacement of the connecting parts cannot be loaded on parts in the magnetic liquid basic sealing structure, and the service life of the magnetic liquid sealing can be prolonged.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (3)
1. A magnetic liquid seal adapted for axial and radial displacement at a joint, comprising:
an end cap;
the first clamping plate with the rubber sealing ring is fixed on the end cover through a first screw and a second screw, wherein the first clamping plate with the rubber sealing ring comprises a first rubber sealing ring and a first clamping plate, and the first rubber sealing ring is arranged in a groove of the first clamping plate;
the second clamping plate with the rubber sealing ring is arranged in the groove of the end cover, wherein the second clamping plate with the rubber sealing ring comprises a second rubber sealing ring, a third rubber sealing ring and a second clamping plate, and the second rubber sealing ring and the third rubber sealing ring are arranged in the groove of the second clamping plate; and
the basic sealing structure is fixed on the second clamping plate with the rubber sealing ring through a third screw and a fourth screw so as to be isolated from the end cover through the first clamping plate with the rubber sealing ring and the second clamping plate with the rubber sealing ring;
the basic sealing structure further comprises:
the shell is internally provided with a fourth rubber sealing ring and a fifth rubber sealing ring;
the shaft sleeve with the sealing group is arranged in the shell, wherein the shaft sleeve with the sealing group comprises a right rolling bearing, a right magnetism isolating ring, a right pole shoe with a rubber sealing ring, an annular permanent magnet, a left pole shoe with a rubber sealing ring, a left magnetism isolating ring, a left rolling bearing and a shaft sleeve, and the right rolling bearing, the right magnetism isolating ring, the right pole shoe with the rubber sealing ring, the annular permanent magnet, the left pole shoe with the rubber sealing ring, the left magnetism isolating ring and the left rolling bearing are sequentially sleeved outside the shaft sleeve;
the left end ring is sleeved on one side of the outer side of the shaft sleeve with the sealing group and is rotationally screwed into threads on the inner wall of the shell;
the right end ring is sleeved on the other side of the outer side of the shaft sleeve with the sealing group, and the first fastening screw and the second fastening screw are screwed in;
the right pole shoe with the rubber sealing ring comprises a sixth rubber sealing ring and a right pole shoe, and the sixth rubber sealing ring is arranged in a groove of the right pole shoe;
the left pole shoe with the rubber sealing ring comprises a seventh rubber sealing ring and a left pole shoe, and the seventh rubber sealing ring is arranged in a groove of the left pole shoe;
the left magnetism isolating ring, the right magnetism isolating ring and the shell are made of non-magnetic materials.
2. The magnetic fluid seal adapted for axial and radial displacement of a joint of claim 1 wherein said left and right pole pieces are of magnetically permeable material, wherein the inner walls of said left and right pole pieces are machined with teeth and tooth slots, the number of said teeth per pole piece being 2 to 10, the width of said teeth being at least 0.3mm, and the width of said tooth slots being at least 0.5mm.
3. The magnetic liquid sealing device for adapting to axial and radial displacement of a joint according to claim 1, wherein a sealing gap between the left pole shoe with the rubber sealing ring, the right pole shoe with the rubber sealing ring and the shaft sleeve is 0.001-1 mm, and magnetic liquid is filled in the sealing gap to realize dynamic sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810725735.9A CN108679232B (en) | 2018-07-04 | 2018-07-04 | Magnetic liquid sealing device adapting to axial and radial displacement of joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810725735.9A CN108679232B (en) | 2018-07-04 | 2018-07-04 | Magnetic liquid sealing device adapting to axial and radial displacement of joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108679232A CN108679232A (en) | 2018-10-19 |
| CN108679232B true CN108679232B (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810725735.9A Active CN108679232B (en) | 2018-07-04 | 2018-07-04 | Magnetic liquid sealing device adapting to axial and radial displacement of joint |
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| CN112197009B (en) * | 2020-09-10 | 2021-05-11 | 清华大学 | Magnetic liquid sealing device's shell and stirred tank/reation kettle |
| CN112178200B (en) * | 2020-09-27 | 2021-09-24 | 清华大学 | Magnetic liquid sealing device |
| CN112728102B (en) * | 2020-12-29 | 2022-02-22 | 清华大学 | Magnetic liquid sealing device |
| CN112728111B (en) * | 2021-01-18 | 2022-08-19 | 清华大学 | Magnetic liquid sealing device |
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| SU1737202A2 (en) * | 1990-04-27 | 1992-05-30 | Центральное специализированное конструкторское бюро | Magnetic-liquid seal |
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| CN106195026A (en) * | 2016-09-09 | 2016-12-07 | 广西科技大学 | A kind of bearing cap device for sealing magnetic fluid |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4443015A (en) * | 1982-07-14 | 1984-04-17 | Five Star Seal Corporation | Cartridge type rotary shaft seal with bearings and bellows |
| SU1095002A1 (en) * | 1983-05-24 | 1984-05-30 | Дзержинский филиал Ленинградского научно-исследовательского и конструкторского института химического машиностроения | Shaft magnetic-liquid seal |
| JPS6465341A (en) * | 1987-09-04 | 1989-03-10 | Nippon Seiko Kk | Damper device employing magnetic fluid |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108679232A (en) | 2018-10-19 |
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