CN109850328B - Magnetorheological suspensions anti storage device that subsides based on rotatory permanent magnet - Google Patents
Magnetorheological suspensions anti storage device that subsides based on rotatory permanent magnet Download PDFInfo
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- CN109850328B CN109850328B CN201910179584.6A CN201910179584A CN109850328B CN 109850328 B CN109850328 B CN 109850328B CN 201910179584 A CN201910179584 A CN 201910179584A CN 109850328 B CN109850328 B CN 109850328B
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Abstract
The invention provides a magnetorheological fluid anti-settling storage device based on a rotating permanent magnet, which comprises a storage container with a cylindrical structure, a permanent magnet and a magnetism isolating part, wherein the permanent magnet is arranged in the storage container; the magnetic isolation part is arranged on the outer side of the storage container, the permanent magnet is arranged on the outer side of the storage container, and the magnetic isolation part is positioned between the permanent magnet and the storage container; the permanent magnet is rotatably arranged on the outer side of the storage container by taking a central line of a connecting line between the end parts of the two magnetic poles as a rotating shaft, when the permanent magnet is in an anti-settling state, the extending direction of the two magnetic poles of the permanent magnet is parallel to the tangential direction of the side wall of the storage container, and when the permanent magnet is in a non-anti-settling state, the extending direction of the two magnetic poles of the permanent magnet is vertical to the tangential direction of the side wall of the storage container; the suspension stability of the magnetorheological fluid can be improved under the condition of not changing the material characteristics of the magnetorheological fluid, so that the quality and the shear yield stress of the magnetorheological fluid are ensured, and the magnetorheological fluid is convenient to use.
Description
Technical Field
The invention relates to a magnetorheological fluid storage device, in particular to a magnetorheological fluid anti-sedimentation storage device based on a rotating permanent magnet.
Background
Magnetorheological fluids are suspensions of micron-sized magnetic particles dispersed in a base liquid or water. When no external magnetic field is applied, the magnetorheological fluid has better fluidity; under the action of a strong magnetic field, the magnetorheological fluid can be continuously and reversibly converted into a Bingham fluid with high viscosity and low fluidity within milliseconds, the apparent viscosity of the Bingham fluid can be increased by more than two orders of magnitude, and the Bingham fluid has mechanical properties similar to solid. The characteristics of continuity, reversibility, easy control and quick response of the magnetorheological fluid ensure that the magnetorheological fluid device is successfully applied in the fields of aerospace, weapon control, robots, noise control, automobiles, ships and buildings. However, since the density of the discrete phase in the magnetorheological fluid is greater than that of the continuous phase (about 7 times), the sedimentation of solid particles is inevitable, and the magnetorheological fluid is required to have higher suspension stability in practical application. Therefore, the suspension stability is an important index for evaluating the performance of the magnetorheological fluid. The traditional methods for slowing down the sedimentation of the magnetorheological fluid are also multiple, such as coating a polymer coating on magnetic particles, increasing the viscosity of carrier fluid or using additives, and the like, but the methods increase the suspension stability of the magnetorheological fluid and reduce the shear yield stress of the magnetorheological fluid, so that the application scenes of the magnetorheological fluid are reduced.
Therefore, a new solution is continuously proposed to solve the above technical problem.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a magnetorheological fluid anti-settling storage apparatus based on a rotating permanent magnet, which can improve the suspension stability of the magnetorheological fluid without changing the material characteristics of the magnetorheological fluid, thereby ensuring the quality and shear yield stress of the magnetorheological fluid, and is convenient to use, capable of storing the magnetorheological fluid alone or having a device for storing the magnetorheological fluid, and wide in application range.
The invention provides a magnetorheological fluid anti-settling storage device based on a rotating permanent magnet, which comprises a storage container with a cylindrical structure, a permanent magnet and a magnetism isolating part, wherein the permanent magnet is arranged in the storage container;
the magnetic isolation part is arranged on the outer side of the storage container, the permanent magnet is arranged on the outer side of the storage container, and the magnetic isolation part is positioned between the permanent magnet and the storage container;
the permanent magnet is rotatably arranged on the outer side of the storage container by taking a central line of a connecting line between the end parts of the two magnetic poles as a rotating shaft, when the permanent magnet is in an anti-settling state, the extending direction of the two magnetic poles of the permanent magnet is parallel to the tangential direction of the side wall of the storage container, and when the permanent magnet is in a non-anti-settling state, the extending direction of the two magnetic poles of the permanent magnet is vertical to the tangential direction of the side wall of the storage container.
Further, the magnetism isolating part is of a plate-shaped structure, the side surface facing the storage container is of an arc-shaped surface structure, and the arc-shaped surface side of the magnetism isolating part is attached to the outer side wall of the storage container.
Further, the length of the magnetism isolating part is larger than the liquid level height of the magnetorheological fluid in the storage container.
Further, still include the magnetic conduction piece, be provided with the magnetic shield in the magnetic conduction piece, the magnetic shield is divided into two symmetrical parts with the magnetic conduction piece, the permanent magnet rotatable setting is in the magnetic conduction piece.
Further, the magnetic conduction block is provided with a magnet mounting hole, the permanent magnet is rotatably arranged in the magnet mounting hole, the extending directions of the two magnetic poles of the permanent magnet are perpendicular to the axial direction of the magnet mounting hole, and the axis of the magnet mounting hole is located on the magnetic isolation plate.
Further, the one end terminal surface of magnetic conduction piece is provided with the semicircle recess, magnetic conduction piece is 2, and the semicircle recess of two magnetic conduction pieces is just to forming a cylindrical holding tank, storage container sets up in the holding tank, separate the magnetism part and fix and set up in the semicircle recess and separate magnetism part and magnetism board fixed connection.
The invention has the beneficial effects that: the invention can improve the suspension stability of the magnetorheological fluid under the condition of not changing the material characteristics of the magnetorheological fluid, thereby ensuring the quality and the shear yield stress of the magnetorheological fluid, is convenient to use, can independently store the magnetorheological fluid or has a device for storing the magnetorheological fluid, and has wide application range.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic structural view of the present invention in a non-anti-settling state.
Fig. 2 is a schematic structural view of the present invention in a state of anti-settling.
Fig. 3 is a schematic structural view of the magnetic conductive block of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings, in which:
the invention provides a magnetorheological fluid anti-settling storage device based on a rotating permanent magnet, which comprises a storage container 3 with a cylindrical structure, a permanent magnet 4 and a magnetic isolation part 2;
the magnetic isolation part is arranged on the outer side of the storage container, the permanent magnet is arranged on the outer side of the storage container, and the magnetic isolation part is positioned between the permanent magnet and the storage container;
the permanent magnet is rotatably arranged on the outer side of the storage container by taking a central line of a connecting line between the end parts of the two magnetic poles as a rotating shaft, when the permanent magnet is in an anti-settling state, the extending direction of the two magnetic poles of the permanent magnet is parallel to the tangential direction of the side wall of the storage container, and when the permanent magnet is in a non-anti-settling state, the extending direction of the two magnetic poles of the permanent magnet is vertical to the tangential direction of the side wall of the storage container; the storage container can be a special storage container for storing the magnetorheological fluid, and can also be a magnetorheological device, such as a cylinder body of a magnetorheological damper with a columnar structure.
The process of anti-settling of the present invention is such that: as shown in fig. 1: if the magnetorheological fluid does not need to be subjected to anti-settling, the extension directions of the two magnetic poles of the permanent magnet (namely the linear extension directions of the south and north poles) are in a state of being vertical to the tangential direction of the side wall of the storage container, at the moment, magnetic lines of force are from south poles to north poles inside the permanent magnet, and the magnetic lines of force are from north poles to south poles outside the permanent magnet; as shown in fig. 2: when the magnetorheological fluid is required to be stored in a settlement-resistant manner, at the moment, the permanent magnet is rotated, so that the extending directions of the two magnetic poles of the permanent magnet are parallel to the tangential direction of the side wall of the storage container, at the moment, the magnetic lines of force of the permanent magnet are from the north pole to the south pole, although the magnetic isolation part exists, the direction of the magnetic lines of force is changed relative to the magnetic isolation part, therefore, the magnetic lines of force can pass through the storage container, and due to the action of the magnetic isolation plate and the magnetic conduction block, the magnetic lines of force can penetrate through the storage container as much as possible, so that the magnetic particles in the magnetorheological fluid are in a suspension state under the combined action of gravity, buoyancy, viscous force and magnetic field force under the action of an external magnetic field, the settlement of the magnetic particles is resisted, and the.
In this embodiment, the magnetism isolating part 2 is a plate-shaped structure, the side surface facing the storage container is an arc-shaped surface structure, and the arc-shaped surface side of the magnetism isolating part 2 is attached to the outer side wall of the storage container. The length of the magnetism isolating part is larger than the height of the liquid level of the magnetorheological fluid in the storage container, wherein the length of the magnetism isolating part is the size in the direction perpendicular to the paper surface in the attached drawing 1, and the anti-settling state can be effectively ensured to be converted only when the length of the magnetism isolating part is larger than the height of the magnetorheological fluid.
In this embodiment, the magnetic field generator further comprises a magnetic conduction block 5, a magnetic isolation plate 1 is arranged in the magnetic conduction block 5, the magnetic isolation plate 1 divides the magnetic conduction block into two symmetrical parts, and the permanent magnet 4 is rotatably arranged on the magnetic conduction block, as shown in the figure, under the combined action of the structure and the magnetic isolation part, reliable conversion of the direction of a magnetic line of force of the permanent magnet can be ensured.
In this embodiment, the magnetic conductive block is provided with a magnet mounting hole 6, the permanent magnet 4 is rotatably disposed in the magnet mounting hole 6, and the extending direction of the two magnetic poles of the permanent magnet is perpendicular to the axial direction of the magnet mounting hole, the axis of the magnet mounting hole is located on the magnetic isolation plate, that is, when the extending direction of the two magnetic poles of the permanent magnet is perpendicular to the tangential direction of the sidewall of the storage container, the extending direction of the magnetic isolation plate can also divide the permanent magnet into two symmetrical halves, and under this structure, the balance of magnetic force line distribution can be ensured, and the stability of the whole system can also be ensured.
In this embodiment, a semicircular arc groove is formed in an end face of one end of the magnetic conduction block, and the axial direction of the semicircular arc groove is parallel to the axial direction of the magnet installation hole; thereby ensuring the accuracy of the parallelism and perpendicularity of the permanent magnet and the tangent of the side wall of the storage container; the magnetic conduction piece is 2, and the semicircle recess of two magnetic conduction pieces 5 is just to forming a cylindrical holding tank, storage container sets up in holding tank 7, separate the fixed setting of magnetism part in semicircle recess and separate magnetism part and magnetism board fixed connection, through this kind of structure, can guarantee the stability of structure, guarantee to have sufficient magnetic field in the magnetic current becomes regional when anti state of subsiding.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (5)
1. The utility model provides a magnetorheological suspensions anti storage device that subsides based on rotatory permanent magnet which characterized in that: the magnetic separation device comprises a storage container with a cylindrical structure, a rotary permanent magnet and a magnetic separation part;
the magnetic isolation component is arranged on the outer side of the storage container, the rotary permanent magnet is arranged on the outer side of the storage container, and the magnetic isolation component is positioned between the rotary permanent magnet and the storage container;
the rotating permanent magnet is rotatably arranged on the outer side of the storage container by taking a central line of a connecting line between the end parts of the two magnetic poles as a rotating shaft, when the rotating permanent magnet is in an anti-settling state, the extending direction of the two magnetic poles of the rotating permanent magnet is parallel to the tangential direction of the side wall of the storage container, and when the rotating permanent magnet is in a non-anti-settling state, the extending direction of the two magnetic poles of the rotating permanent magnet is vertical to the tangential direction of the side wall of the storage container.
2. The magnetorheological fluid anti-settling storage device based on the rotating permanent magnet according to claim 1, wherein: the magnetic isolation component is of a plate-shaped structure, the side surface facing the storage container is of an arc surface structure, and the arc surface side of the magnetic isolation component is attached to the outer side wall of the storage container.
3. The magnetorheological fluid anti-settling storage device based on the rotating permanent magnet according to claim 2, wherein: the length of the magnetic isolation part is larger than the liquid level height of the magnetorheological fluid in the storage container.
4. The magnetorheological fluid anti-settling storage device based on the rotating permanent magnet according to claim 1, wherein: the magnetic separation device is characterized by further comprising a magnetic conduction block, wherein a magnetic separation plate is arranged in the magnetic conduction block, and the magnetic separation plate divides the magnetic conduction block into two symmetrical parts;
the magnetic conduction block is provided with a magnet mounting hole, the rotary permanent magnet is rotatably arranged in the magnet mounting hole, and the extension directions of two magnetic poles of the rotary permanent magnet are vertical to the axial direction of the magnet mounting hole; when the extension direction of the two magnetic poles of the rotating permanent magnet is perpendicular to the tangential direction of the side wall of the storage container, the rotating permanent magnet is divided into two symmetrical halves by the extension direction of the magnetism isolating plate.
5. The magnetorheological fluid anti-settling storage device based on the rotating permanent magnet according to claim 4, wherein: the one end terminal surface of magnetic conduction piece is provided with the semicircle recess, magnetic conduction piece is 2, and the semicircle recess of two magnetic conduction pieces is just to forming a cylindrical holding tank, storage container sets up in the holding tank, it sets up in the semicircle recess and separates magnetism part and magnetism-isolating plate fixed connection to separate the magnetism part fixedly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910179584.6A CN109850328B (en) | 2019-03-11 | 2019-03-11 | Magnetorheological suspensions anti storage device that subsides based on rotatory permanent magnet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910179584.6A CN109850328B (en) | 2019-03-11 | 2019-03-11 | Magnetorheological suspensions anti storage device that subsides based on rotatory permanent magnet |
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| Publication Number | Publication Date |
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| CN109850328A CN109850328A (en) | 2019-06-07 |
| CN109850328B true CN109850328B (en) | 2020-08-11 |
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| CN201910179584.6A Expired - Fee Related CN109850328B (en) | 2019-03-11 | 2019-03-11 | Magnetorheological suspensions anti storage device that subsides based on rotatory permanent magnet |
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| CN112590912A (en) * | 2021-01-11 | 2021-04-02 | 安徽小龙仔儿童用品有限公司 | Anti-toppling baby carriage |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4835509A (en) * | 1986-07-29 | 1989-05-30 | Nippondenso Co., Ltd. | Noncontact potentiometer |
| JPH05290994A (en) * | 1992-04-07 | 1993-11-05 | Kokusai Electric Co Ltd | Plasma generator |
| JP2011127616A (en) * | 2009-12-15 | 2011-06-30 | Kurimoto Ltd | Rotary device with sealing means using magnetic viscous fluid |
| CN101718324B (en) * | 2009-12-29 | 2012-02-01 | 重庆仪表材料研究所 | Wobble wheel rotary magneto-rheological damper |
| CN104361964B (en) * | 2014-11-10 | 2017-11-24 | 三峡大学 | A kind of rotary type rheostat based on magnetic rheology effect |
| CN105857977A (en) * | 2016-06-17 | 2016-08-17 | 广州溢滔钱潮减震科技股份有限公司 | Electromagnetic storage device for preventing magneto-rheological fluid settlement |
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Granted publication date: 20200811 Termination date: 20210311 |