CN215463925U - Magnetic stirring device for laboratory - Google Patents
Magnetic stirring device for laboratory Download PDFInfo
- Publication number
- CN215463925U CN215463925U CN202120201249.4U CN202120201249U CN215463925U CN 215463925 U CN215463925 U CN 215463925U CN 202120201249 U CN202120201249 U CN 202120201249U CN 215463925 U CN215463925 U CN 215463925U
- Authority
- CN
- China
- Prior art keywords
- magnetic
- stirrer
- coil
- base
- laboratory
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000003760 magnetic stirring Methods 0.000 title claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- 230000009471 action Effects 0.000 claims abstract description 8
- 239000000696 magnetic material Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 2
- 238000003756 stirring Methods 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010888 cage effect Methods 0.000 description 1
- 230000003047 cage effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
Images
Landscapes
- Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
Abstract
The utility model discloses a magnetic stirring device for a laboratory, which comprises a base and a stirrer made of a permanent magnetic material, wherein a magnetic coil which generates a magnetic field when being powered on is arranged in the base, a coil cover is arranged above the base corresponding to the magnetic coil, the coil cover is of an annular structure with a central hole, a light-transmitting top cover covers the central hole, and the light-transmitting top cover and the coil cover are constructed into a supporting surface for supporting a reaction container; the reaction vessel is characterized by further comprising a U-shaped hanging piece hung in the reaction vessel, a rotating seat is arranged at the bottom of the U-shaped hanging piece, a rotating fulcrum is arranged in the middle of the stirrer and penetrates through the rotating seat, and the stirrer rotates under the alternating action of magnetic fields generated by the three groups of magnetic coils. The magnetic stirring device for the laboratory can achieve a better stirring effect.
Description
Technical Field
The utility model relates to small-sized laboratory equipment, in particular to a magnetic stirring device for a laboratory.
Background
Stirring is an important standardized operation in most chemical reactions. Stirring is to stir through a stirring tool to enable reaction materials to generate certain circulation, so that gas, liquid and even suspended particles in the solution can be uniformly mixed. This is an important step in organic chemical reactions. In organic chemical reaction, the purpose of stirring is to make the reactant fully mixed with each other to avoid side reaction or organic matter decomposition caused by nonuniform concentration of reactant, local overlarge and nonuniform heating. Through stirring, the reaction is uniform, the reaction and heat dissipation can be facilitated, and the cage of reactant molecules can be destroyed for the reaction with the cage effect, so that the reaction molecules can meet the reaction as soon as possible. Laboratories are currently generally operated with glass rod stirring or with some small stirring device. For example, a magnetic stirring device is one of them. In contrast to conventional mechanical stirring devices, magnetic stirrers are laboratory instruments for mixing liquids, primarily for stirring or simultaneously heating and stirring low-viscosity liquids or solid-liquid mixtures. The basic principle is that magnetic stirrer inside container is driven by magnetic field to rotate circularly to stir liquid. In this process, the stirrer is placed in the container without restriction, so that the stirrer is not always positioned at the center of the bottom of the container during actual stirring, but is likely to approach the side wall of the container gradually and collide with the side wall during rotation. Due to the collision, the rotation speed of the stirrer is suddenly reduced, which means that the stirrer needs to be accelerated again to reach the rotation speed required by stirring, and the actual stirring efficiency is greatly reduced.
Disclosure of Invention
In view of the above problems in the prior art, the present invention aims to provide a magnetic stirring device for a laboratory, which has a better stirring effect.
In order to achieve the above object, the magnetic stirring apparatus for a laboratory according to an embodiment of the present invention includes a base and a stirrer made of a permanent magnetic material, wherein a magnetic coil generating a magnetic field when the stirrer is powered on is disposed in the base, the magnetic coil includes at least three groups and is equally distributed on a same circumference, a coil cover is disposed above the base corresponding to the magnetic coil, the coil cover is an annular structure having a central hole, and the central hole is covered with a transparent top cover, and the transparent top cover and the coil cover are configured as a supporting surface for supporting a reaction vessel; the reaction vessel is characterized by further comprising a U-shaped hanging piece hung in the reaction vessel, a rotating seat is arranged at the bottom of the U-shaped hanging piece, a rotating fulcrum is arranged in the middle of the stirrer and penetrates through the rotating seat, and the stirrer rotates under the alternating action of magnetic fields generated by the three groups of magnetic coils.
Preferably, a display module is arranged on the side edge of the base, and the display module is configured to display the rotation speed information of the stirrer under the excitation of the magnetic field.
Preferably, a rotating shaft is arranged at the geometric center of the circumference where the three groups of magnetic coils are located, a reference pointer made of a permanent magnetic material is arranged on the rotating shaft, and the reference pointer rotates around the rotating shaft under the alternating action of magnetic fields generated by the three groups of magnetic coils.
Preferably, an aperture is arranged in the central hole of the coil cover and close to one side of the base, and a plurality of LED lamps are arranged on the aperture at least at equal intervals.
Compared with the prior art, the laboratory magnetic stirring device provided by the utility model has the advantages that compared with the existing magnetic stirring device, the stirrer can be constrained at the geometric center of the circumference of the three groups of magnetic coils through the U-shaped hanging part, so that under the alternating action of a magnetic field, the stirrer cannot move towards the wall of the container, collision and deceleration cannot be caused, and a better stirring effect can be obtained.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
This document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology.
Drawings
Fig. 1 is a schematic perspective exploded view of a magnetic stirring apparatus for a laboratory according to the present invention.
FIG. 2 is a schematic diagram of the magnetic stirring device in the laboratory according to the present invention.
The main reference numbers:
1 … base plate; 2 … reaction vessel; 3 … U-shaped hanging piece; 4 … stirring bar; 11 … a base housing; 12 … display module; 13 … a magnetic coil; 14 … a rotating shaft; 15 … coil housing; 16 … light transmissive top cover; 17 … aperture; 18 … reference pointer; 31 … swivel; a 32 … bend; 41 … magnet N pole; 42 … magnet S pole; 43 … pivot point; BG1, BG2, BG3, BG4, BG5, BG6 … switch transistors.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure.
It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the word "comprising" or "comprises", and the like, in this disclosure is intended to mean that the elements or items listed before that word, include the elements or items listed after that word, and their equivalents, without excluding other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
To maintain the following description of the embodiments of the present disclosure clear and concise, a detailed description of known functions and known components have been omitted from the present disclosure.
As shown in fig. 1 to 2, a magnetic stirring apparatus for a laboratory according to an embodiment of the present invention includes a base 1 and a stirrer 4 made of a permanent magnetic material, wherein a magnetic coil 13 generating a magnetic field when being powered is disposed in the base 1, as shown in fig. 2, the magnetic coil 13 includes at least three groups, which are a coil a, a coil B, and a coil C, the three groups of magnetic coils 13 are equally distributed on a same circumference, a coil cover 15 is disposed above the base corresponding to the magnetic coil 13, the coil cover 15 is an annular structure having a central hole (not labeled), and the central hole is covered with a transparent top cover 16, and the transparent top cover 16 and the coil cover 15 are configured as a supporting surface (not shown) for supporting a reaction vessel 2; the reactor is characterized by further comprising a U-shaped hanging piece 3 hung in the reaction vessel 2, wherein a rotating base 31 is arranged at the bottom of the U-shaped hanging piece 3, a rotating fulcrum 43 is arranged in the middle of the stirrer 4, and the rotating fulcrum 43 is arranged on the rotating base 31 in a penetrating mode so that the stirrer 4 rotates under the alternating action of magnetic fields generated by the three groups of magnetic coils 13. Specifically, with further reference to fig. 2, in the present invention, the magnetic coil 13 is excited with three sets of coils connected in a star, and a bridge circuit of six switching transistors BG1 to BG6 switches the current through the three coils. For example, when BG1 and BG5 are switched on, current flows from coil a to coil B, coil a and coil B generate an electromagnetic field with the same polarity, coil C generates an opposite magnetic pole, and stirrer 4 rotates according to the characteristic that like poles repel each other and opposite poles attract each other because stirrer 4 is made of permanent magnetic material; further, if BG2 and BG4 are turned on and BG6 are turned on and current flows from coil B into coil a and flows out of coil C in parallel, coil a and coil C generate a magnetic field having the same magnetic pole, and coil B generates a different magnetic pole. Repeating the above steps, the stirrer 4 can stably rotate in the reaction vessel 2 near the center position under the constraint of the rotary base 31 to realize stirring. Referring to fig. 1, in the present invention, the U-shaped hanging member may be made of a corrosion-resistant and elastic polymer material, which should have good material stability, such as ABS plastic. Meanwhile, the elastic U-shaped mounting member is suitable for reaction vessels 2 with different sizes, and the end part of the elastic U-shaped mounting member, which is positioned outside the reaction vessels 2, can be directly bent into the bending part 32, so that the mounting is convenient.
In other modifications, as shown in fig. 1, a display module 12 is preferably disposed at a side edge of the base 1, and the display module 12 is configured to display information of the rotation speed of the stirrer 4 under magnetic field excitation.
In addition, in order to adjust the stirrer 4 to the magnetic field center as much as possible, a rotating shaft 14 is arranged at the geometric center of the circumference where the three groups of magnetic coils 13 are located, a reference pointer 18 made of a permanent magnetic material is arranged on the rotating shaft 14, and the reference pointer 18 rotates around the rotating shaft under the alternating action of the magnetic fields generated by the three groups of magnetic coils. The reference pointer 18 can on the one hand assist the setting of the rotor 4 in position and on the other hand also indicate the theoretical rotational speed at which the magnetic field can excite the rotor.
Furthermore, in order to observe the actual rotating speed of the stirrer in the dark environment or in the presence of colored materials, the central hole of the coil cover 15 is close to the base 1 and is provided with a diaphragm 17 on one side of the base shell 11, and the diaphragm comprises a circular ring-shaped body 172 and a plurality of LED lamps 171 arranged at equal intervals. The LED lamp 171 provides illumination, so that the stirring effect can be better observed.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.
Claims (4)
1. The magnetic stirring device for the laboratory comprises a base and stirrers made of permanent magnet materials, and is characterized in that magnetic coils which generate a magnetic field when the stirrer is powered on are arranged in the base, the magnetic coils at least comprise three groups and are distributed on the same circumference in an equal distribution mode, a coil cover is arranged above the base corresponding to the magnetic coils, the coil cover is of an annular structure with a central hole, a light-transmitting top cover covers the central hole, and the light-transmitting top cover and the coil cover are constructed into a supporting surface for supporting a reaction container; the reaction vessel is characterized by further comprising a U-shaped hanging piece hung in the reaction vessel, a rotating seat is arranged at the bottom of the U-shaped hanging piece, a rotating fulcrum is arranged in the middle of the stirrer and penetrates through the rotating seat, and the stirrer rotates under the alternating action of magnetic fields generated by the three groups of magnetic coils.
2. The magnetic laboratory stirrer according to claim 1, wherein a display module is disposed on the side edge of the base, and the display module is configured to display information on the rotation speed of the stirrer excited by the magnetic field.
3. The magnetic laboratory stirrer according to claim 1, wherein a rotating shaft is disposed at the geometric center of the circumference of the three sets of magnetic coils, and a reference pointer made of a permanent magnetic material is disposed on the rotating shaft and rotates around the rotating shaft under the alternating action of the magnetic fields generated by the three sets of magnetic coils.
4. The magnetic laboratory mixing apparatus of claim 1, wherein an aperture is disposed in the central bore of the coil housing adjacent to a side of the base, the aperture having a plurality of LED lights disposed thereon at least equidistantly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120201249.4U CN215463925U (en) | 2021-01-25 | 2021-01-25 | Magnetic stirring device for laboratory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120201249.4U CN215463925U (en) | 2021-01-25 | 2021-01-25 | Magnetic stirring device for laboratory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215463925U true CN215463925U (en) | 2022-01-11 |
Family
ID=79761441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120201249.4U Expired - Fee Related CN215463925U (en) | 2021-01-25 | 2021-01-25 | Magnetic stirring device for laboratory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215463925U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114471303A (en) * | 2022-02-23 | 2022-05-13 | 上海天美科学仪器有限公司 | Novel high-efficient convenient cell magnetic stirrers control system |
-
2021
- 2021-01-25 CN CN202120201249.4U patent/CN215463925U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114471303A (en) * | 2022-02-23 | 2022-05-13 | 上海天美科学仪器有限公司 | Novel high-efficient convenient cell magnetic stirrers control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3173144A1 (en) | Light irradiation multi-sample parallel reaction device | |
| CN215463925U (en) | Magnetic stirring device for laboratory | |
| EP1539335B1 (en) | Magnetic stirring apparatus and method | |
| US9833757B2 (en) | Device for stirring | |
| US20170007972A1 (en) | Magnetic Stirring Device and Method of Using the Same | |
| JP2007136443A (en) | Agitating bar and agitation apparatus | |
| CN202289943U (en) | Magnetic stirring device | |
| KR101609327B1 (en) | Bowl system having a function of stirring | |
| KR20180047731A (en) | Viscosity monitoring stirrer | |
| CN214374842U (en) | Mixing device of magnetic bead reagent and sample analysis equipment | |
| US11479747B2 (en) | Arrayed lyser and homogenizer systems with multiple agitator devices | |
| CN204051587U (en) | A kind of sealed electric agitator | |
| US20230109862A1 (en) | Linear pulsating type magnetic mixing system and an associated method of operation | |
| CN208694975U (en) | A kind of photochemical reactor | |
| CN104209045B (en) | Sealed electric agitator | |
| CN209438112U (en) | Magnetic agitation liquid-liquid extraction instrument | |
| CN215842725U (en) | Heating stirring sample platform that chemical analysis used | |
| JPH10192679A (en) | Rotator for stirring, and stirring apparatus | |
| CN211026322U (en) | Magnetic drive mechanical stirring device | |
| CN220478673U (en) | Electromagnetic force dissolving device | |
| CN108404831A (en) | A kind of photochemical reactor | |
| CN219482669U (en) | Optical continuous flow reactor | |
| US20010055240A1 (en) | Mixing liquids and entrainment mixing of vapor into liquids | |
| CN219266314U (en) | Sample analyzer and reagent storage device | |
| CN215611094U (en) | Various-grade magnetic stirring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220111 |