CN113750881A - Self-balancing magnetic stirring rod - Google Patents
Self-balancing magnetic stirring rod Download PDFInfo
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- CN113750881A CN113750881A CN202111211857.4A CN202111211857A CN113750881A CN 113750881 A CN113750881 A CN 113750881A CN 202111211857 A CN202111211857 A CN 202111211857A CN 113750881 A CN113750881 A CN 113750881A
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Abstract
The invention discloses a self-balancing magnetic stirring rod, which comprises an external shell and a magnetic assembly arranged in the shell, wherein a cavity part is arranged in the shell and/or the magnetic assembly, and fluid is arranged in the cavity part and used for balancing the self-balancing magnetic stirring rod in the rotation process of the self-balancing magnetic stirring rod. According to the invention, the cavity part is arranged in the shell and/or the magnetic assembly, the fluid is arranged in the cavity part, when the self-balancing magnetic stirring rod rotates in the magnetic stirring cup, the fluid at the two ends of the cavity part provides the axial force for the self-balancing magnetic stirring rod to react, so that a centrifugal force is formed, the two ends of the self-balancing magnetic stirring rod are more balanced, the stirring liquid is more uniform, the cup wall of the magnetic stirring cup is not touched in the stirring process, and the stirring efficiency is higher.
Description
Technical Field
The invention relates to the technical field of stirrer accessories, in particular to a self-balancing magnetic stirring rod.
Background
Magnetic stirring is the stirring mode that often uses in the liquid mixing, mainly used stirring and the liquid of mixing different kinds, its rationale utilizes Faraday electromagnetic induction law, place the magnetic stirring stick on the bottom of cup of magnetic stirring cup promptly, there is induction coil in the magnetic stirring cup, can produce induced-current in the induction coil, the inside magnetic field that can produce of magnetic stirring cup, when magnetic field changes, and according to ampere's theorem, the circular telegram wire can receive the effect of ampere's power in magnetic field, thereby make the magnetic stirring stick at the magnetic field internal rotation, the magnetic stirring stick that magnetic field drive placed in the container carries out the circumference operation, thereby reach the purpose of even stirring liquid. At present, the most common magnetic stirring cup is to place a magnetic stirring rod at the bottom of the cup and push a magnetic stirring rotor to rotate by continuously changing the polarities at the two ends, so as to achieve the effect of uniformly stirring the liquid in the cup.
However, because the precision of stirring rod assembly and the inhomogeneous of material among the prior art, often lead to the focus of stirring rod can not set up between two parties, probably can also guarantee relative stability in the rotation of low speed, however the promotion of the rotation rate of stirring rod, the rotatory unstable problem of stirring rod that makes the focus deviation lead to is more and more serious, and then when making current magnetic stirring rod rotatory in the magnetic stirring cup, the magnetic stirring rod often can hit the cup wall of magnetic stirring cup, make liquid stirring inhomogeneous, the efficiency of stirring has been reduced, and can make the in-process of stirring the abnormal sound appear, influence user's experience.
Disclosure of Invention
The invention aims to provide a self-balancing magnetic stirring rod, and the self-balancing magnetic stirring rod is used for solving the technical problem that when the magnetic stirring rod rotates in a magnetic stirring cup in the prior art, the magnetic stirring rod often collides with the cup wall of the magnetic stirring cup, so that liquid is stirred unevenly.
The invention provides a self-balancing magnetic stirring rod which comprises an external shell and a magnetic assembly arranged in the shell, wherein a cavity part is arranged in the shell and/or the magnetic assembly, and fluid is arranged in the cavity part and used for balancing the magnetic stirring rod in the rotation process of the magnetic stirring rod.
Further, the cavity part is located between the shell and the magnetic assembly, the cavity part is cylindrical, the magnetic assembly is located in the hollow mandrel of the cavity part, and the magnetic stirring rod sequentially comprises the shell, the cavity part and the magnetic assembly from outside to inside.
Furthermore, the magnetic assembly is in a circular column shape, a mandrel of the magnetic assembly is hollow, and the cavity part is positioned in the hollow mandrel of the magnetic assembly; the magnetic stirring rod comprises a shell, a magnetic assembly and a cavity part from outside to inside in sequence.
Further, a stop part is arranged in the cavity part and used for dividing the inside of the cavity part into two or more closed cavities, and equivalent fluid is filled in the cavities in central symmetry of the two or more closed cavities so as to ensure that the magnetic stirring rod is in a balanced state when being installed at the bottom of the cup.
Further, a stop piece is arranged in the cavity part and used for dividing the interior of the cavity part into two or more non-closed cavities, and the height of the stop piece is slightly higher than the liquid level of the fluid.
Further, the fluid is a sodium chloride solution, and the fluid accounts for 30% -80% of the volume of the cavity part.
The invention also provides a self-balancing magnetic stirring rod, which comprises an external shell and a magnetic assembly arranged in the shell, wherein an annular balancing piece is sleeved outside the shell and is provided with a hollow cavity, and the annular balancing piece is symmetrical by taking the axis of the magnetic stirring rod as a symmetry axis; the inner cavities of the semicircular balance pieces positioned on the two sides of the symmetry axis are communicated or not communicated with each other, and fluid is arranged in the cavities.
Further, a stop part is arranged in the cavity and used for dividing the interior of the cavity into two or more non-closed cavities, and the height of the stop part is slightly higher than the liquid level of the fluid.
Further, be provided with the stop part in the cavity, the stop part be used for with two or more airtight cavities are cut apart into to the cavity is inside, it has equivalent fluid to fill in the cavity of two or more airtight cavity centrosymmetries to be in balanced state when guaranteeing that magnetic stirring rod installs at the bottom of the cup.
Further, the fluid is a sodium chloride solution; the fluid occupies 30-80% of the volume of the cavity.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the cavity part is arranged in the shell and/or the magnetic assembly, the fluid is arranged in the cavity part, and by arranging the fluid, when the self-balancing magnetic stirring rod rotates in the magnetic stirring cup, the fluid at the two ends of the cavity part provides axial force for the self-balancing magnetic stirring rod to react, and in the rotating process of the stirring rod, the fluid in the cavity generates centrifugal force, so that the rotating process of the self-balancing magnetic stirring rod is more stable, the stirring liquid is more uniform, the stirring process does not touch the cup wall of the magnetic stirring cup any more, the stirring efficiency is higher, and the noise in the stirring process can be effectively reduced.
In a container larger than a handheld drinking cup, a magnetic stirring rod is required to stir the solution in the container, and the stirring rod in the prior art has the problems that the stirring rod rotates unstably in the container and collides with the cup wall in the stirring process of the large container.
Drawings
Fig. 1 is a schematic structural view of a self-balancing magnetic stirring rod according to a first embodiment of the present invention;
fig. 2 is an exploded view of a self-balancing magnetic stirring rod according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along A-A in FIG. 1;
FIG. 4 is an enlarged view of a portion of FIG. 3 at B;
FIG. 5 is a schematic structural diagram of a cavity according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view of the cavity portion taken along C-C in FIG. 5;
fig. 7 is a schematic structural diagram of a self-balancing magnetic stirring rod with a support portion according to a first embodiment of the present invention;
fig. 8 is an exploded view of a self-balancing magnetic stirring rod according to a second embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a cavity provided in the second embodiment of the present invention;
FIG. 10 is a cross-sectional view of the cavity portion taken along line D-D of FIG. 9;
FIG. 11 is a first schematic structural diagram of a cavity according to a third embodiment of the present invention;
FIG. 12 is a cross-sectional view of the cavity portion taken along line E-E of FIG. 11;
FIG. 13 is an enlarged partial schematic view at F of FIG. 12;
fig. 14 is a schematic structural diagram of a cavity part provided in the third embodiment of the present invention;
FIG. 15 is a cross-sectional view of the cavity portion taken along line G-G of FIG. 14;
FIG. 16 is a first schematic structural diagram of a cavity according to a fourth embodiment of the present invention;
FIG. 17 is a cross-sectional view of the cavity portion taken along H-H in FIG. 16;
FIG. 18 is an enlarged partial view at I of FIG. 17;
fig. 19 is a second schematic structural view of a cavity provided in the fourth embodiment of the present invention;
FIG. 20 is a cross-sectional view of the cavity portion taken along J-J in FIG. 19;
fig. 21 is a first schematic structural view of a self-balancing magnetic stirring rod according to a fifth embodiment of the present invention;
FIG. 22 is an exploded view of the self-balancing magnetic stir bar of FIG. 21;
FIG. 23 is a first schematic structural view of the balance member of FIG. 21;
FIG. 24 is a first cross-sectional view taken along line K-K of FIG. 23;
FIG. 25 is a second cross-sectional view taken along section K-K of FIG. 23;
FIG. 26 is a second schematic structural view of the balance of FIG. 21;
FIG. 27 is a first cross-sectional view taken along line L-L of the counterbalance assembly of FIG. 26;
FIG. 28 is a second sectional view taken along line L-L of the counterbalance assembly of FIG. 26;
fig. 29 is a second schematic structural view of a self-balancing magnetic stirring rod according to a fifth embodiment of the present invention;
FIG. 30 is an exploded view of the self-balancing magnetic stir bar of FIG. 29;
FIG. 31 is a schematic view of the counterbalance of FIG. 29;
FIG. 32 is a first cross-sectional view taken along line M-M of FIG. 31;
FIG. 33 is a second sectional view taken along line M-M of FIG. 31;
fig. 34 is a third schematic structural view of a self-balancing magnetic stirring rod provided in the fifth embodiment of the present invention.
In the figure:
10. a housing; 11. a first housing; 111. a first tank body; 12. a second housing; 20. a magnetic assembly; 30. a cavity portion; 31. a cavity; 40. a support portion; 41. a support surface; 50. a stopper; 60. a balance member; 61. and (7) installing holes.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
Referring to fig. 1 to 7, in an embodiment of the present invention, a self-balancing magnetic stirring rod is disclosed, which includes an outer casing 10 and a magnetic assembly 20 disposed inside the outer casing 10, wherein a cavity 30 is disposed inside the outer casing 10 and outside the magnetic assembly 20, that is, the cavity 30 may be disposed between the outer casing 10 and the magnetic assembly 20.
The cavity part 30 is internally provided with fluid which is used for balancing the magnetic stirring rod in the rotation process of the magnetic stirring rod, and the fluid at the two ends in the cavity part 30 provides axial force for the self-balancing magnetic stirring rod to react to form centrifugal force, so that the two ends of the self-balancing magnetic stirring rod are more balanced, and the stirring liquid is more uniform; the fluid may be water, or a solution of water, such as a sodium chloride solution; or fine sand with uniform particles; and a mixed solution of water and fine sand, and the like.
The shell 10 is in a spindle shape, the shell 10 includes a first shell 11 and a second shell 12 opposite to the first shell 11, the first shell 11 and the second shell 12 have the same shape and structure, and the first shell 11 and the second shell 12 are fixed together; the two half shells are fixed in a sealing mode through threads and buckles, or the first shell 11, the magnetic assembly 20 and the cavity portion 30 are assembled firstly, and then the second shell is formed through an injection molding process, so that the shells of the self-balancing magnetic stirring rod are integrated, and the integrity and the sealing performance of the self-balancing magnetic stirring rod are improved.
In the specific embodiment, the cavity portion 30 is located between the shell 10 and the magnetic assembly 20, the cavity portion 30 is in a circular column shape, the magnetic assembly 20 is located in a hollow mandrel of the cavity portion 30, and the self-balancing magnetic stirring rod sequentially includes the shell 10, the cavity portion 30 and the magnetic assembly 20 from outside to inside.
Specifically, the first shell 11 is provided with a first groove 111 in a concave manner, the second shell 12 is provided with a second groove in a concave manner, the magnetic assembly 20 is sleeved in the cylindrical cavity portion 30 of the circular ring, one end of the cavity portion 30 is located in the first groove 111, the other end of the cavity portion is located in the second groove, fluid is located in the cavity portion 30, and the first shell 11 and the second shell 12 are tightly combined to form a stirring rod shell body.
Specifically, the fluid is a sodium chloride solution, and the concentration of the sodium chloride solution can be adjusted according to needs to adjust the density of the liquid in the magnetic stirring rod; in addition, the volume of the fluid can be filled according to the actual situation and can be 1% -100%; preferably 30% -80% of the chamber portion 30 is filled with fluid, and specifically may be 40%, 50%, 60%, 70% and more.
Preferably, the housing 10 is provided with a support portion 40 for abutting the self-balancing magnetic stirring rod on the bottom of the magnetic stirring cup, the support portion 40 is located in the middle of the outer side wall of the housing 10, and in a horizontal placement state, the gravity center of the self-balancing magnetic stirring rod is substantially overlapped with the center point of the stirring rod in the normal direction.
In actual assembly, assembly errors often cause that the gravity center of the shell 10, the gravity center of the supporting part 40 and the gravity center of the magnetic assembly 20 cannot be completely overlapped, and due to the existence of fluid in the cavity part, the stirring rod can automatically approach to a stable state of gravity center overlapping in work, so that the running stability of the stirring rod is effectively improved.
The housing 10 and the support 40 may be made of an insulating material and/or a stainless steel material, and the housing 10, the support 40, and the magnetic assembly 20 may rotate together, and when the self-balancing magnetic stirring bar is placed in the magnetic stirring cup, the support is used to contact with the bottom of the cup, and the housing 10 does not contact with the bottom of the magnetic stirring cup.
One end of the supporting part 40, which is far away from the outer shell surface, is provided with a plurality of supporting surfaces 41 which are used for abutting against the bottom of the magnetic stirring cup, the height of each supporting surface 41 is higher than the highest position of the middle part of the stirring rod, the height difference can be 1mm, 2mm or even more, and at most, the height difference is not more than 5mm, and the specific height difference depends on the size of the stirring rod; specifically, the height difference can be increased along with the increase of the axial length of the stirring rod; when setting up the stirring rod stirring that certain difference in height is, this supporting part can be supplementary stirs or the disturbance to the liquid of bottommost, promotes the whole efficiency of stirring of solution.
The number of the supporting surfaces 41 can be one, two or more, the two supporting surfaces 41 are arranged at two ends of the supporting portion 40 in a reverse manner, the supporting surfaces 41 are equivalent to a supporting point, the self-balancing magnetic stirring rod can be prevented from axially overturning and overturning in the magnetic stirring cup, and the shell 10, the supporting portion 40 and the cavity portion 30 are all made of non-magnetic materials; the support portion 40 may be designed to be flush with the bottom surface of the thickest portion of the stirring rod in the middle thereof.
Preferably, the self-balancing magnetic stirring rod can be arranged into a spindle-shaped structure, the middle part of the shell is in contact with the cup bottom, and an independently designed supporting part structure is eliminated.
Referring to fig. 8 to 10, a second embodiment of the present invention discloses a self-balancing magnetic stirring rod, which includes an outer casing 10 and a magnetic assembly 20 disposed inside the outer casing 10, wherein a cavity portion 30 is disposed inside the magnetic assembly 20, i.e., the cavity portion 30 is disposed inside the magnetic assembly 20.
The magnetic assembly 20 is in a cylindrical shape, a mandrel of the magnetic assembly 20 is hollow, the cavity portion 30 is located in the hollow mandrel of the magnetic assembly 20, fluid is located in the cavity portion 30, and the self-balancing magnetic stirring rod sequentially comprises the shell 10, the magnetic assembly 20 and the cavity portion 30 from outside to inside.
Specifically, first shell 11 goes up the concave first cell body 111 that is equipped with, the concave second cell body that is equipped with on second shell 12, cavity portion 30 is cylindric, the cylindrical magnetic force component 20 cover of ring is located outside cavity portion 30, magnetic force component 20's one end is located first cell body 111, the other end is located the second cell body, fluid is located cavity portion 30, first shell 11 and second shell 12 accessible adhesive bonding, threaded connection, first shell subassembly magnetic force component of joint or preparation earlier and cavity portion, form integrative structure stirring rod shell by injection moulding's mode again, guarantee that the equipment is accomplished the back, self-balancing magnetic stirring rod is whole stable sealed.
As further shown in fig. 11 to 15, in the above embodiment, the structure inside the cavity portion 30 is modified, and the cavity portion 30 may be a circular cylindrical shape or a cylindrical shape.
In this embodiment, a stopper 50 is disposed in the cavity portion 30, the stopper 50 is used for dividing the interior of the cavity portion 30 into two or more closed cavities 31, each cavity 31 is filled with fluid, and the fluid amount in each closed cavity 31 is equal or unequal; when unequal amounts of fluid are filled in the sealed cavity 31, the amounts of fluid in the cavities 31 of the symmetrical corresponding portions need to be equal.
Referring to fig. 16 to 20, in another embodiment, the structure inside the cavity portion 30 is modified, a stopper 50 is disposed inside the cavity portion 30, the stopper 50 is used for dividing the inside of the cavity portion 30 into two or more non-sealed cavities 31, wherein the height of the stopper 50 is slightly higher than the liquid level of the fluid, so that when the fluid flows through the two non-sealed cavities 31, the fluid can be effectively prevented from remaining in one of the non-sealed cavities 31; the fluid volume can be set to be 1% -100% of the volume of the cavity part; preferably 30% -80% of the chamber portion 30 is filled with fluid, and specifically may be 40%, 50%, 60%, 70% and more. The height of the stopper 50 is designed to be correspondingly adjusted when injecting the volume of the fluid such that the height of the stopper 50 is slightly higher than the height of the fluid when the stirring rod is horizontally placed.
Further referring to fig. 21 to 33, a fifth embodiment further provides a self-balancing magnetic stirring rod, which includes an external casing 10 and a magnetic assembly 20 disposed inside the casing 10, an annular balancing member 60 is sleeved outside the casing 10, the annular balancing member 60 is provided with a hollow cavity 31, the annular balancing member 60 is symmetrical with an axial center line of the self-balancing magnetic stirring rod as a symmetry axis, the annular balancing member 60 transversely penetrates through two mounting holes 61, and two ends of the casing 10 are respectively clamped on the two mounting holes 61.
A fluid is provided in the hollow cavity 31 of the balance 60; the inner cavities 31 of the semicircular balancing pieces 60, in which the balancing pieces 60 are positioned at the two sides of the symmetry axis, can be communicated or not; when the left and right halves of the balancing member 60 are communicated, the fluid in the internal cavities 31 of the left and right halves of the balancing member can be communicated with each other, so that the fluid always keeps a gravity balance state; when the left and right halves of the balance 60 are not in communication; the quality and the volume of the fluid inside the left and right semi-ring balance pieces are equal, and the balance of the balance pieces is guaranteed.
Preferably, the fluid may be water, or a solution of water, such as a sodium chloride solution; or fine sand with uniform particles; and mixed solution of water and fine sand, etc.; the fluid can be set to be 1% -100% of the volume of the cavity part; preferably 30% -80% of the chamber portion 30 is filled with fluid, and specifically may be 40%, 50%, 60%, 70% and more.
The balance member 60 can be integrally constructed or separately constructed to form a complete balance member; when the stirring rod is arranged on the stirring rod, the stirring rod can be relatively and fixedly connected with the stirring rod; further balancing members may be made integral with the mixer bar housing 10.
Referring to fig. 26-28, a cavity 30 is provided in the balancing member 60, a cavity 31 is provided in the cavity, a stopper 50 is provided in the cavity 31, the stopper 50 is used for dividing the inside of the cavity 31 into two or more non-closed cavities 31, the height of the stopper 50 is slightly higher than the liquid level of the fluid, and when the stirring rod is placed at the bottom of intersection, the fluid in the cavity can be automatically balanced; referring specifically to fig. 28, in addition, the stopper 50 is used to divide the interior of the chamber 31 into two or more sealed chambers 31, and the volumes of the fluids in the sealed chambers 31 of the axially and circumferentially symmetrical parts of the sealed chambers are consistent, so as to ensure that the stirring rod can be automatically balanced when being installed on the cup bottom.
Referring to fig. 29 to 34, the present invention further provides a self-balancing magnetic stirring rod, which includes an outer casing 10 and a magnetic assembly 20 disposed inside the casing 10, wherein a balancing member 60 is disposed outside the casing 10, the balancing member 60 is provided with a hollow cavity 31, the balancing member 60 is symmetrically disposed with respect to an axial center line of the outer casing 10 as a symmetry axis, and the balancing member 60 is configured in a circular arc bracelet shape.
The balance piece 60 is provided with a mounting hole 61, and a cavity 31 is arranged in the balance piece; a fluid is disposed within the cavity 31. The balance pieces 60 are symmetrically arranged by taking the central shaft of the stirring rod as a symmetry axis; the balance piece 60 is divided into two semi-arc balance pieces by taking the symmetry axis as a central line, and a cavity 31 is arranged in the two semi-arc balance pieces; the two semi-arc cavities 31 can be communicated or not communicated; when they are communicated, the fluids in the two arc-shaped balance pieces 60 can flow each other; when they are not communicated, the mass and volume of fluid in the two semicircular arc cavities are identical, and the same fluid is filled in the two semicircular arc cavities.
When the two semi-arc cavities are arranged in a split mode and fluid filled in the two semi-arc cavities does not circulate, the two semi-arc cavities can be fixed with each other through structures such as clamping and clamping rings.
Preferably, the fluid may be water, or a solution of water, such as a sodium chloride solution; or fine sand with uniform particles; and mixed solution of water and fine sand, etc.; the fluid can be set to be 1% -100% of the volume of the cavity part; preferably 30% -80% of the chamber portion 30 is filled with fluid, and specifically may be 40%, 50%, 60%, 70% and more.
Further, in the annular cavity portion 30 of the balancing member 60, a stopper 50 is disposed in the cavity 31, the stopper 50 is used for dividing the inside of the cavity 31 into two or more non-sealed cavities 31, and the height of the stopper 50 is slightly higher than the liquid level of the fluid, so as to balance the fluid at both ends.
Further, in the annular cavity portion 30 of the balancing piece 60, the stop piece 50 is arranged in the cavity 31, the stop piece 50 is used for dividing the inside of the cavity 31 into two or more closed cavities 31, and the volumes of the fluids in the closed cavities 31 of the axially and circumferentially symmetrical portions of the closed cavities are consistent, so that the stirring rod can be automatically balanced when being installed at the bottom of the cup.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. The utility model provides a self-balancing magnetic stirring rod, includes outside casing and sets up the magnetic force component inside the casing, its characterized in that: a cavity part is arranged in the shell and/or the magnetic assembly, and fluid is arranged in the cavity part and used for balancing the magnetic stirring rod in the rotating process of the magnetic stirring rod.
2. The self-balancing magnetic stir bar of claim 1 wherein: the magnetic stirring rod comprises a shell, a cavity part and a magnetic assembly, wherein the cavity part is positioned between the shell and the magnetic assembly, the cavity part is in a circular column shape, the magnetic assembly is positioned in a hollow mandrel of the cavity part, and the magnetic stirring rod sequentially comprises the shell, the cavity part and the magnetic assembly from outside to inside.
3. The self-balancing magnetic stir bar of claim 1 wherein: the magnetic assembly is in a circular column shape, a mandrel of the magnetic assembly is hollow, and the hollow part is positioned in the hollow mandrel of the magnetic assembly; the magnetic stirring rod comprises a shell, a magnetic assembly and a cavity part from outside to inside in sequence.
4. The self-balancing magnetic stir bar of claim 1 wherein: the improved cup is characterized in that a stop piece is arranged in the cavity part and used for dividing the inside of the cavity part into two or more closed cavities, and equal-quantity fluid is filled in the centrally symmetrical cavities of the two or more closed cavities so as to ensure that the magnetic stirring rod is in a balanced state when being installed at the bottom of the cup.
5. The self-balancing magnetic stir bar of claim 1 wherein: the cavity part is internally provided with a stop piece, the stop piece is used for dividing the interior of the cavity part into two or more non-closed cavities, and the height of the stop piece is slightly higher than the height of the liquid level of the fluid.
6. The self-balancing magnetic stir bar of claim 1 wherein: the fluid is sodium chloride solution, and the fluid accounts for 30-80% of the volume of the cavity part.
7. The utility model provides a self-balancing magnetic stirring rod, includes outside casing and sets up the magnetic force component inside the casing, its characterized in that: an annular balancing piece is sleeved outside the shell and provided with a hollow cavity, and the annular balancing piece is symmetrical by taking the axis of the magnetic stirring rod as a symmetry axis; the inner cavities of the semicircular balance pieces positioned on the two sides of the symmetry axis are communicated or not communicated with each other, and fluid is arranged in the cavities.
8. The self-balancing magnetic stir bar of claim 7, wherein: be provided with the stopper in the cavity, the stopper be used for with cavity is inside to be cut apart into two or a plurality of non-airtight cavities, the height of stopper is a little higher than fluid liquid level height.
9. The self-balancing magnetic stir bar of claim 7, wherein: be provided with the stop part in the cavity, the stop part be used for with two or more airtight cavities are cut apart into to the cavity is inside, it has equivalent fluid to fill in the cavity of two or more airtight cavity centrosymmetric to be in balanced state when guaranteeing that magnetic stirring rod installs at the bottom of a cup.
10. The self-balancing magnetic stir bar of claim 7, wherein: the fluid is a sodium chloride solution; the fluid occupies 30-80% of the volume of the cavity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111211857.4A CN113750881B (en) | 2021-10-18 | 2021-10-18 | Self-balancing magnetic stirring rod |
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| CN202111211857.4A CN113750881B (en) | 2021-10-18 | 2021-10-18 | Self-balancing magnetic stirring rod |
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| CN113750881B CN113750881B (en) | 2022-06-24 |
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| CN113750881B (en) | 2022-06-24 |
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