CN112326777A - Device for measuring the surface instability of a magnetic liquid - Google Patents
Device for measuring the surface instability of a magnetic liquid Download PDFInfo
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- CN112326777A CN112326777A CN202011052544.4A CN202011052544A CN112326777A CN 112326777 A CN112326777 A CN 112326777A CN 202011052544 A CN202011052544 A CN 202011052544A CN 112326777 A CN112326777 A CN 112326777A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/74—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables of fluids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/038—Measuring direction or magnitude of magnetic fields or magnetic flux using permanent magnets, e.g. balances, torsion devices
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Abstract
The invention discloses a measuring device for instability of the surface of a magnetic liquid, which comprises a supporting component, a transparent container, a tray and a measuring component, wherein the supporting component comprises a first supporting frame and a measuring platform; the transparent container is arranged at the top of the measuring platform; the tray is arranged on the supporting component, and the permanent magnet is arranged on the tray; the measuring component comprises an observing component, a moving component and a projection component, the observing component comprises a second supporting frame and an image collector, the second supporting frame is arranged at the top of the measuring platform, the image collector is arranged on the second supporting frame, the image collecting end of the image collector faces towards the transparent container, the moving component is connected with the tray and is used for driving the tray to move, the projection component comprises a light source and a projection plate, and the light source and the projection plate are arranged at the top of the measuring platform and are arranged relatively. The measuring device can adjust the distance between the permanent magnet and the magnetic liquid and intuitively measure the surface instability of the magnetic liquid.
Description
Technical Field
The invention belongs to the technical field of magnetic liquid detection, and particularly relates to a device for measuring the surface instability of a magnetic liquid.
Background
The magnetic liquid is a colloidal solution formed by wrapping nanoscale magnetic solid particles by a surfactant and then stably dispersing the nanoscale magnetic solid particles in a proper base carrier liquid. When the permanent magnet is gradually close to the magnetic liquid, the interface of the magnetic liquid begins to fluctuate under the action of the non-uniform magnetic field on the surface of the permanent magnet, and a three-dimensional peak state is formed, and the state is called as instability of the magnetic liquid. The surface instability of magnetic liquids is characterized by: as the distance between the permanent magnet and the magnetic liquid is gradually shortened, the number of three-dimensional peaks generated is gradually increased, and the distance is gradually reduced. When the permanent magnet is removed, the magnetic liquid can be restored to the original state, so that the surface instability of the magnetic liquid can be used for detecting the magnetic field intensity of the permanent magnet.
However, in the related art, the device for detecting surface instability of magnetic liquid cannot adjust the distance between the permanent magnet and the magnetic liquid, which affects the accuracy of the measured data.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the embodiment of the invention provides a device for measuring the instability of the surface of a magnetic liquid, which can adjust the distance between a permanent magnet and the magnetic liquid, measure the instability of the surface of the magnetic liquid more intuitively and improve the accuracy of measured data.
The device for measuring the instability of the surface of a magnetic liquid according to an embodiment of the invention comprises: the support assembly comprises a first support frame and a measuring platform, and the measuring platform is arranged at the top of the first support frame; the transparent container is arranged at the top of the measuring platform and is used for containing magnetic liquid; the tray is arranged on the supporting component, and a permanent magnet is arranged on the tray; the measuring assembly comprises an observing component, a moving component and a projection component, the observing component comprises a second supporting frame and an image collector, the second supporting frame is arranged at the top of the measuring platform, the image collector is arranged on the second supporting frame, the image collecting end of the image collector faces towards the transparent container, the moving component is arranged on the supporting component and is connected with the tray, the moving component is used for driving the tray to move so as to enable the tray to be close to and far away from the transparent container, the projection component comprises a light source and a projection plate, the light source and the projection plate are both arranged at the top of the measuring platform, the light source and the projection plate are arranged oppositely and at intervals, and the transparent container is arranged between the light source and the projection plate; the tray and the transparent container are oppositely arranged in the vertical direction, and the moving part is used for driving the tray to move up and down.
According to the measuring device for the surface instability of the magnetic liquid, disclosed by the embodiment of the invention, the distance between the permanent magnet and the magnetic liquid in the transparent container is controlled by the moving part, so that the surface instability of the magnetic liquid can be intuitively reflected, the magnetic field size of the permanent magnet can also be detected, the form image of the magnetic liquid in the transparent container is shot by the image collector in real time, an operator can conveniently master the generation process of the surface instability of the magnetic liquid in the testing process in time, the surface instability of the magnetic liquid is analyzed according to the form image of the magnetic liquid, the accuracy of detection data is improved, and the form image of the magnetic liquid in the transparent container can be projected on the projection plate by arranging the projection assembly, so that the image of the magnetic liquid in the transparent container.
In some embodiments, the moving member includes a first rail and a first slider, the first rail is disposed at the bottom of the measuring platform and extends downward, the first slider is disposed on the first rail and is slidable along the extending direction of the first rail, and the tray is connected to the first slider.
In some embodiments, the moving part further comprises a driving unit provided at a bottom of the first support frame, the driving unit being connected to the tray.
In some embodiments, the height of the second support frame is greater than the height of the transparent container, the measuring assembly further includes a second guide rail and a second slider, one end of the second guide rail is connected to the measuring platform, the other end of the second guide rail is connected to the top of the second support frame, the second guide rail is located outside the transparent container, the second slider is arranged on the second guide rail and is slidable along the extending direction of the second guide rail, the second slider is rotatable around the extending direction of the second guide rail, and the image collector is connected to the second slider.
In some embodiments, the outer circumferential profile of the cross-section of the second rail is circular.
In some embodiments, the second rail is disposed in a curve.
In some embodiments, the height of the transparent container is greater than the height of the light source.
In some embodiments, the measuring platform is provided with a first through hole which penetrates through the measuring platform in the up-down direction, the supporting component further comprises a storage rack, the storage rack is matched in the first through hole, the storage rack is detachably connected with the measuring platform, and the transparent container is arranged at the top of the storage rack.
In some embodiments, the supporter includes a supporting portion and a connecting portion, the supporting portion is disposed in the first through hole, the supporting portion is connected to the measuring platform, the connecting portion is disposed at the top of the supporting portion and located outside the first through hole, and the transparent container is disposed at the top of the connecting portion.
In some embodiments, the material of the transparent container is a non-magnetic material.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for measuring surface instability of a magnetic liquid according to an embodiment of the present invention.
FIG. 2 is a schematic view of another angle structure of the device for measuring the instability of the surface of a magnetic liquid according to the embodiment of the present invention.
FIG. 3 is a schematic structural diagram of a rack in the apparatus for measuring the instability of the surface of a magnetic liquid according to the embodiment of the present invention.
Reference numerals:
a supporting component 1, a first supporting frame 11, a measuring platform 12, a shelf 13, a supporting part 131, a connecting part 132,
a transparent container 2, a tray 3, a permanent magnet 4,
a measuring component 5, an observation part 51, a second support frame 511, an image collector 512,
the moving member 52, the first guide rail 521, the first slider 522, the driving unit 523,
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1 to 3, the measuring device for the instability of the surface of a magnetic liquid according to an embodiment of the present invention comprises a support assembly 1, a transparent container 2, a tray 3 and a measuring assembly 5.
The support assembly 1 comprises a first support frame 11 and a measuring platform 12, the measuring platform 12 being arranged on top of the first support frame 11. As shown in fig. 1 and 2, the first support frame 11 may be vertically disposed on the ground along an up-down direction, and the measuring platform 12 extends horizontally and is disposed on the top of the first support frame 11.
The transparent container 2 is arranged on the top of the measuring platform 12, and the transparent container 2 is used for containing magnetic liquid. Preferably, the material of the transparent container 2 is a non-magnetic material. Specifically, the material of the transparent container 2 is an acrylic material or a glass material. As shown in fig. 1 and 2, the transparent container 2 is placed on the upper end surface of the measuring platform 12, and the transparent container 2 has a containing cavity with an open upper end inside, and the containing cavity is used for containing magnetic liquid.
The tray 3 is arranged on the supporting component 1, and the permanent magnet 4 is arranged on the tray 3. As shown in fig. 1 and 2, the tray 3 extends horizontally and is disposed on the support assembly 1, the tray 3 is located below the measuring platform 12, and the permanent magnet 4 is disposed on the upper end surface of the tray 3.
The measuring component 5 comprises an observing component 51 and a moving component 52, the observing component 51 comprises a second supporting frame 511 and an image collector 512, the second supporting frame 511 is arranged on the top of the measuring platform 12, the image collector 512 is arranged on the second supporting frame 511, and the image collecting end of the image collector 512 faces the transparent container 2. As shown in fig. 1 and 2, the second support frame 511 is vertically fixed to the upper end surface of the measurement platform 12 in the up-down direction. Specifically, the image collector 512 is a high-speed camera for capturing images of the form of the magnetic liquid in the transparent container 2 in real time.
A moving member 52 is provided on the support assembly 1 and connected to the tray 3, and the moving member 52 is used to drive the tray 3 to move so as to move the tray 3 closer to and away from the transparent container 2.
According to the measuring device for the surface instability of the magnetic liquid, disclosed by the embodiment of the invention, the distance between the permanent magnet and the magnetic liquid in the transparent container is controlled by the moving part, so that the surface instability of the magnetic liquid can be intuitively reflected, the size of the magnetic field of the permanent magnet can also be detected, the morphological image of the magnetic liquid in the transparent container is shot in real time by adopting the image collector, an operator can conveniently master the generation process of the surface instability of the magnetic liquid in the testing process in time, the surface instability of the magnetic liquid is analyzed according to the morphological image of the magnetic liquid, and the accuracy of detection data is improved.
In some embodiments, the tray 3 and the transparent container 2 are arranged oppositely in the up-down direction, and the moving member 52 is used to drive the tray 3 to move up and down. As shown in fig. 1 and 2, the tray 3 is located right below the transparent container 2, the permanent magnet 4 is located on the upper end surface of the tray 3, and the moving member 52 drives the tray 3 to move in the up-down direction so that the permanent magnet 4 on the tray 3 approaches and departs from the bottom of the transparent container 2.
The measuring device for the surface instability of the magnetic liquid controls the distance between the permanent magnet 4 and the magnetic liquid in the transparent container 2 through the moving part, can visually reflect the surface instability of the magnetic liquid by changing the distance between the permanent magnet 4 and the magnetic liquid, and can also detect the magnetic field size of the permanent magnet 4.
In some embodiments, the moving member 52 includes a first rail 521 and a first slider 522, the first rail 521 is disposed at the bottom of the measuring platform 12 and extends downward, the first slider 522 is disposed on the first rail 521 and is slidable along the extending direction of the first rail 521, and the tray 3 is connected to the first slider 522. As shown in fig. 1 and 3, the number of the first guide rails 521 is two, the two first guide rails 521 are arranged at intervals in the left-right direction, the tops of the two first guide rails 521 are connected with the bottom of the measuring platform 12, the first guide rails 521 extend in the up-down direction, the number of the first sliding blocks 522 is two, the two first sliding blocks 522 are in one-to-one correspondence with the two first guide rails 521, and the two first sliding blocks 522 are connected with the left and right end surfaces of the tray 3 respectively.
The measuring device for the instability of the surface of the magnetic liquid ensures the accuracy of the movement of the tray 3 in the up-down direction by providing the first guide rail 521 and the first slider 522.
In some embodiments, the moving part 52 further includes a driving unit 523, a fixed end of the driving unit 523 is disposed at the bottom of the first support frame 11, and a telescopic end of the driving unit 523 is connected to the tray 3. As shown in fig. 1 and 3, a driving unit 523 is connected to the bottom of the tray 3. Preferably, the driving unit 523 may be an electric push rod, a hydraulic cylinder, or an air cylinder. Specifically, the driving unit 523 is an electric push rod, the bottom of the electric push rod is bolted to the ground through a first pin, the top of the electric push rod is bolted to the bottom of the tray 3 through a second pin, the electric push rod includes a motor, a transmission case and a mechanical cylinder, the motor is arranged in the up-down direction, an output shaft (not shown) of the motor is connected to a power input shaft (not shown) of the transmission case, a power output shaft (not shown) of the transmission case is connected to the mechanical cylinder, a telescopic rod (not shown) which extends and retracts in the up-down direction is arranged in the mechanical cylinder, and the top of the telescopic rod is bolted to the bottom of the tray 3. Specifically, the motor can adopt a synchronous motor or an asynchronous motor, the transmission case is a gear transmission case or a belt transmission case, and the mechanical cylinder adopts a planetary ball screw.
In some embodiments, the height of the second support frame 511 is greater than the height of the transparent container 2. When the height of the second support frame 511 in the device for measuring the instability of the surface of the magnetic liquid is greater than the height of the transparent container 2, the image collector 512 can be ensured to collect morphological images of the magnetic liquid in the transparent container 2 at different height positions.
The measuring assembly 5 further comprises a second guide rail 54 and a second slider 55, one end of the second guide rail 54 is connected with the measuring platform 12, the other end of the second guide rail 54 is connected with the top of the second support frame 511, the second guide rail 54 is located outside the transparent container 2, the second slider 55 is arranged on the second guide rail 54 and can slide along the extending direction of the second guide rail 54, the second slider 55 can rotate around the extending direction of the second guide rail 54, and the image collector 512 is connected with the second slider 55.
As shown in fig. 1 and 2, the lower end of the second guide rail 54 is connected to the upper end of the measuring platform 12, and the upper end of the second guide rail 54 is connected to the top of the second support frame 511. The image collector 512 is movable along the extending direction of the second guide rail 54 along with the second slide block 55, and can also rotate around the second guide rail 54, so that the position of the image collector 512 in the vertical direction and the shooting angle of the image collecting end can be adjusted, which is convenient for shooting morphological images of different positions and different angles of the magnetic liquid in the transparent container 2, and improves the accuracy of measuring the instability of the surface of the magnetic liquid.
In some embodiments, the outer circumferential profile of the cross-section of the second rail 54 is circular. The outer circumference of the cross section of the second guide rail 54 in the measuring device for the instability of the surface of the magnetic liquid is circular, and the sliding and rotating of the second slide block 12 around the second guide rail 54 are smoother.
In some embodiments, the second rail 54 is curved. As shown in fig. 1 and 2, the second guide rail 54 extends in the up-down direction and is bent around the outside of the transparent container 2, when the image collector 512 moves on the second guide rail 54 along with the second slider 55, because the second guide rail 54 is bent, the angle of the image collector 512 changes along with the bending radian of the second guide rail 54, so that the shooting requirements of different heights and positions are met, and the accuracy of measuring the instability of the surface of the magnetic liquid is improved.
In some embodiments, the measuring assembly 5 further comprises a projection assembly 53, the projection assembly 53 comprises a light source 531 and a projection plate 532, the light source 531 and the projection plate 532 are both disposed on top of the measuring platform 12, the light source 531 and the projection plate 532 are disposed opposite and spaced apart, the transparent container 2 is disposed between the light source 531 and the projection plate 532, and preferably, the height of the transparent container 2 is greater than the height of the light source 531. As shown in fig. 1 and 2, the light source 531 and the projection board 532 are both disposed on the upper end surface of the measurement platform 12, and the light source 531 and the projection board 532 are disposed at intervals in the front-rear direction and are accommodated between the light source 531 and the projection board 532 in a transparent manner. The device for measuring the instability of the surface of the magnetic liquid can project the morphological image of the magnetic liquid in the transparent container 2 on the projection plate 532 by arranging the projection assembly 53, so as to be convenient for observing the image of the magnetic liquid in the transparent container 2.
In some embodiments, the measuring platform 12 is provided with a first through hole (not shown) penetrating through the measuring platform 12 in the up-down direction, the supporting assembly 1 further includes a shelf 13, the shelf 13 is fitted in the first through hole, the shelf 13 is detachably connected to the measuring platform 12, and the transparent container 2 is disposed on the top of the shelf 13. Preferably, the supporter 13 includes a supporting portion 131 and a connecting portion 132, the supporting portion 131 is disposed in the first through hole, the supporting portion 131 is connected to the measuring platform 12, the connecting portion 132 is disposed on the top of the supporting portion 131 and located outside the first through hole, and the transparent container 2 is disposed on the top of the supporting portion 131.
As shown in fig. 1 and 3, a first through hole is formed between the light source 531 and the projection plate 532, the support portion 131 is disposed in the first through hole, the support portion 131 is located below the measuring platform 12, the lower end of the transparent container 2 is placed on the support portion 131, the front and rear ends of the support portion 131 are respectively connected to the connecting portion 132, and the connecting portion 132 is connected to the measuring platform 12 by a bolt. The measuring device for measuring the instability of the surface of the magnetic liquid is provided with the first through hole on the measuring platform 2, the supporting part 131 for supporting the transparent container 2 is arranged in the first through hole, and the bottom of the transparent container 2 is supported by the inner circumferential surface of the first through hole and the supporting part 131, so that the position of the transparent container 2 is prevented from being deviated, and the accuracy of measured data is improved.
Some specific examples of measuring devices for the instability of a surface of a magnetic liquid according to the invention are described below with reference to fig. 1 to 3.
The device for measuring the instability of the surface of a magnetic liquid according to an embodiment of the invention comprises a support assembly 1, a transparent container 2, a tray 3 and a measuring assembly 5.
Supporting component 1 includes first support frame 11, measuring platform 12 and supporter 13, and measuring platform 12 establishes at the top of first support frame 11, and first support frame 11 is along the vertical subaerial of establishing of upper and lower direction, and measuring platform 12 is the horizontal extension and fixes the top at first support frame 11, is equipped with the first through-hole that runs through measuring platform 12 on measuring platform 12 in the upper and lower direction.
The transparent container 2 is placed on the upper end face of the measuring platform 12, and an accommodating cavity with an opening at the upper end is formed inside the transparent container 2 and used for accommodating magnetic liquid.
Tray 3 is the level and extends and establish on supporting component 1, and tray 3 is located measuring platform 12's below, and permanent magnet 4 places the up end at tray 3. The tray 3 is positioned right below the transparent container 2, and the permanent magnet 4 is positioned on the upper end surface of the tray 3.
The measuring unit 5 includes an observation unit 51, a moving unit 52, a second guide 54, a second slider 55, and a projection unit 53. The observation component 51 includes a second support frame 511 and an image collector 512, the second support frame 511 is vertically fixed on the upper end surface of the measurement platform 12 along the up-down direction, the image collector 512 is arranged on the second support frame 511, and the image collecting end of the image collector 512 faces the transparent container 2.
The moving member 52 is provided on the support assembly 1 and connected to the tray 3, and the moving member 52 drives the tray 3 up and down to move the tray 3 closer to and away from the transparent container 2.
The moving member 52 includes a first rail 521, a first slider 522, and a driving unit 523. The first rail 521 is disposed at the bottom of the measuring platform 12 and extends downward, the first slider 522 is disposed on the first rail 521 and is slidable along the extending direction of the first rail 521, and the tray 3 is connected to the first slider 522. As shown in fig. 1 and 3, the number of the first guide rails 521 is two, the two first guide rails 521 are arranged at intervals in the left-right direction, the tops of the two first guide rails 521 are connected with the bottom of the measuring platform 12, the first guide rails 521 extend in the up-down direction, the number of the first sliding blocks 522 is two, the two first sliding blocks 522 are in one-to-one correspondence with the two first guide rails 521, and the two first sliding blocks 522 are connected with the left and right end surfaces of the tray 3 respectively.
The fixed end of the driving unit 523 is disposed at the bottom of the first supporting frame 11, and the telescopic end of the driving unit 523 is connected to the bottom of the tray 3. The driving unit 523 is an electric push rod, the bottom of the electric push rod is bolted to the ground through a first pin, the top of the electric push rod is bolted to the bottom of the tray 3 through a second pin, the electric push rod comprises a motor, a transmission case and a mechanical cylinder, the motor is arranged along the up-down direction, an output shaft (not shown) of the motor is connected with a power input shaft (not shown) of the transmission case, the power output shaft (not shown) of the transmission case is connected with the mechanical cylinder, an expansion link (not shown) which extends and retracts along the up-down direction is arranged in the mechanical cylinder, and the top of the expansion link is bolted to the bottom of the tray 3.
The lower end of the second guide rail 54 is connected with the upper end of the measuring platform 12, the upper end of the second guide rail 54 is connected with the top of the second support frame 511, the second guide rail 54 is located outside the transparent container 2, the second slider 55 is arranged on the second guide rail 54 and can slide along the extending direction of the second guide rail 54, the second slider 55 can rotate around the extending direction of the second guide rail 54, the image collector 512 is connected with the second slider 55, the outer peripheral outline of the cross section of the second guide rail 54 is circular, and the second guide rail 54 is arranged in a bent manner.
The projection assembly 53 includes a light source 531 and a projection plate 532, the light source 531 and the projection plate 532 are both disposed on the upper end surface of the measuring platform 12, the light source 531 and the projection plate 532 are arranged at intervals in the front-rear direction, and the transparent container 2 is disposed between the light source 531 and the projection plate 532.
The operation of the apparatus for measuring the surface instability of a magnetic liquid according to an embodiment of the invention is described below with reference to fig. 1 to 3.
Before using the device for measuring the instability of the surface of the magnetic liquid of the present invention, firstly, a measurer places the measured magnetic liquid in the transparent container 2, places the transparent container 2 on the top of the supporting portion 131 in the first through hole, then places the measured permanent magnet 4 on the tray 3, starts the driving unit 523, the driving unit 523 drives the tray 3 to move up and down to make the permanent magnet 4 far away from or close to the magnetic liquid in the transparent container 2, adjusts the distance between the permanent magnet 4 and the transparent container 2 according to the measurement requirement, suspends the driving unit 523 when the distance between the permanent magnet 4 and the magnetic liquid in the transparent container 2 reaches the required measurement distance, starts the light source 531, projects the morphological image of the magnetic liquid in the transparent container 2 onto the projection plate 532 by the light source 531, and when the image on the projection plate 532 is stable, the measurer holds the image collector 512 to slide up and down along the second guide rail 54 by hand, and the angle of the figure collector is rotated according to the requirement, so that the magnetic liquid in the transparent container 2 is subjected to multi-position and multi-angle figure collection, and finally the surface instability of the magnetic liquid is analyzed and calculated according to the collected figure information.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific 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 disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A device for measuring the instability of a surface of a magnetic liquid, comprising:
the support assembly comprises a first support frame and a measuring platform, and the measuring platform is arranged at the top of the first support frame;
the transparent container is arranged at the top of the measuring platform and is used for containing magnetic liquid;
the tray is arranged on the supporting component, and a permanent magnet is arranged on the tray;
the measuring assembly comprises an observing component, a moving component and a projection component, the observing component comprises a second supporting frame and an image collector, the second supporting frame is arranged at the top of the measuring platform, the image collector is arranged on the second supporting frame, the image collecting end of the image collector faces towards the transparent container, the moving component is arranged on the supporting component and is connected with the tray, the moving component is used for driving the tray to move so as to enable the tray to be close to and far away from the transparent container,
the projection assembly comprises a light source and a projection plate, the light source and the projection plate are both arranged at the top of the measuring platform, the light source and the projection plate are arranged oppositely and at intervals, and the transparent container is arranged between the light source and the projection plate;
the tray and the transparent container are oppositely arranged in the vertical direction, and the moving part is used for driving the tray to move up and down.
2. The apparatus of claim 1, wherein the moving member comprises a first rail and a first slider, the first rail is disposed at the bottom of the measuring platform and extends downward, the first slider is disposed on the first rail and is slidable along the extending direction of the first rail, and the tray is connected to the first slider.
3. The apparatus of claim 2, wherein the moving member further comprises a drive unit disposed at a bottom of the first support frame, the drive unit being coupled to the tray.
4. The apparatus of claim 1, wherein the second support shelf has a height greater than the height of the transparent container,
the measuring component further comprises a second guide rail and a second sliding block, one end of the second guide rail is connected with the measuring platform, the other end of the second guide rail is connected with the top of the second supporting frame, the second guide rail is located on the outer side of the transparent container, the second sliding block is arranged on the second guide rail and along the extending direction of the second guide rail, the second sliding block can wind the extending direction of the second guide rail, and the image collector is connected with the second sliding block.
5. The apparatus of claim 4, wherein the peripheral profile of the cross-section of the second rail is circular.
6. The apparatus for measuring the surface instability of a magnetic liquid of claim 5, wherein the second track is curved.
7. The apparatus of claim 1, wherein the transparent container has a height greater than the height of the light source.
8. The device for measuring the instability of the surface of a magnetic liquid according to any one of claims 1 to 7, wherein the measuring platform is provided with a first through hole passing through the measuring platform in the vertical direction, the support assembly further comprises a rack fitted in the first through hole and detachably connected to the measuring platform, and the transparent container is disposed on the top of the rack.
9. The apparatus of claim 8, wherein the holder comprises a support portion and a connecting portion, the support portion is disposed in the first through hole and connected to the measuring platform, the connecting portion is disposed on a top of the support portion and located outside the first through hole, and the transparent container is disposed on a top of the connecting portion.
10. The device for measuring the instability of a surface of a magnetic liquid according to any of claims 1 to 7, characterized in that the material of the transparent container is a non-magnetic material.
Priority Applications (1)
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| CN113406071A (en) * | 2021-05-19 | 2021-09-17 | 杭州电子科技大学 | Magnetic drive liquid drop motion testing device and testing method thereof |
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