Magnetic stirring device and experimental apparatus

Abstract

A magnetic stirring device and experimental apparatus are disclosed. The magnetic stirring device includes a support platform, a driving component, a transmission assembly, and at least two stirring elements. The support platform is used to place a container containing a sample to be stirred. The driving component is located on the side of the support platform facing away from the container. The transmission assembly includes a first transmission mechanism and a transmission shaft. The driving component is connected to the transmission shaft and drives the transmission shaft to rotate around its axis. At least two stirring elements are spaced apart circumferentially along the transmission shaft. Each stirring element includes a stirring shaft and a magnetic element, with the magnetic element located at the end of the stirring shaft facing away from the driving component. The first transmission mechanism connects the transmission shaft and each stirring shaft. The driving component drives the transmission shaft to rotate, causing the transmission shaft to drive each stirring shaft to rotate around its own axis via the first transmission mechanism, resulting in each magnetic element rotating. This magnetic stirring device can perform stirring operations on multiple containers with uniform stirring effect, which helps to meet the needs of high-throughput experiments.

Description

Technical Field

[0001] This utility model relates to the field of experimental equipment technology, specifically to a magnetic stirring device and experimental equipment. Background Technology

[0002] Currently, common stirring devices are generally single magnetic stirring centers, meaning a single drive unit drives a single magnet to stir multiple containers. Because the distance between different containers and the magnet varies, the stirring effect of this device differs for different containers. In other words, current magnetic stirring devices show significant differences in stirring effect across multiple containers, making it difficult to meet the needs of high-throughput experiments. Utility Model Content

[0003] The purpose of this invention is to provide a magnetic stirring device and experimental equipment to solve the problem of significant differences in the stirring effect of magnetic stirring devices on multiple containers.

[0004] To achieve the objectives of this utility model, the following technical solution is provided:

[0005] In a first aspect, this utility model provides a magnetic stirring device, comprising:

[0006] A support platform is used to place containers containing samples to be stirred.

[0007] A driving component is disposed on the side of the support platform facing away from the container;

[0008] A transmission assembly includes a first transmission mechanism and a transmission shaft, wherein the driving member is connected to the transmission shaft and is used to drive the transmission shaft to rotate about the axis of the transmission shaft;

[0009] At least two stirring elements are arranged circumferentially along the drive shaft. Each stirring element includes a stirring shaft and a magnetic element. The magnetic element is disposed at the end of the stirring shaft facing away from the drive element. The first transmission mechanism is respectively connected to the drive shaft and each stirring shaft.

[0010] The driving component drives the transmission shaft to rotate, so that the transmission shaft drives each of the stirring shafts to rotate around its own axis through the first transmission mechanism, so that each of the magnetic components rotates.

[0011] In one embodiment, the axis of the drive shaft is parallel to the axis of each of the stirring shafts, and the rotation direction of each of the stirring shafts is the same.

[0012] In one embodiment, the first transmission mechanism is located on the side of the support platform facing away from the driving member;

[0013] The drive shaft is rotatably connected to the support platform; the support platform has a first mounting hole through it along the axial direction of the drive shaft, the drive shaft passes through the first mounting hole and can rotate relative to the first mounting hole, and one end of the drive shaft facing away from the drive member protrudes from the support platform and is connected to the first transmission mechanism.

[0014] Each of the stirring shafts is rotatably connected to the support platform; the support platform is also provided with at least two second mounting holes along the axial direction of the transmission shaft, and the stirring shaft corresponds to the second mounting hole one by one. The end of the stirring shaft facing away from the magnetic component extends into the second mounting hole and can rotate relative to the second mounting hole.

[0015] In one embodiment, the first transmission mechanism includes a first transmission gear and at least two second transmission gears. The first transmission gear is fixedly connected to the transmission shaft. Each of the second transmission gears is spaced apart in the circumferential direction of the first transmission gear. The first transmission gear and each of the second transmission gears are meshed. Each of the second transmission gears is connected to the stirring shaft in a one-to-one correspondence.

[0016] In one embodiment, the stirring elements are arranged at equal intervals along the circumference of the drive shaft;

[0017] There are two agitators, which are respectively located on opposite sides of the drive shaft in the radial direction; or

[0018] The stirring element is at least three, and the centers of the projections of each stirring element in the axial direction of the drive shaft are connected sequentially to form a regular polygon; the center of the projection of the drive shaft in the axial direction of the drive shaft is located at the geometric center of the regular polygon.

[0019] In one embodiment, there are multiple drive shafts, which are spaced apart, and each drive shaft has at least two stirring elements arranged circumferentially; there are multiple first transmission mechanisms, and each of the multiple drive shafts corresponds to one of the multiple first transmission mechanisms; each drive shaft is connected to at least two stirring elements through the first transmission mechanism.

[0020] The transmission assembly further includes a second transmission mechanism, through which the plurality of transmission shafts are connected. The driving member is connected to one of the plurality of transmission shafts and is used to drive the transmission shaft connected thereto to rotate, so that the transmission shaft drives the other transmission shafts to rotate through the second transmission mechanism. The rotation directions of each transmission shaft are the same.

[0021] In one embodiment, the plurality of drive shafts are divided into at least two groups, and each group of drive shafts includes at least two drive shafts;

[0022] The second transmission mechanism includes a first synchronization component and a second synchronization component. Each transmission shaft in each group of transmission shafts is connected by the first synchronization component, and each pair of adjacent groups of transmission shafts is connected by the second synchronization component. The number of the first synchronization components is the same as the number of groups of transmission shafts.

[0023] In one embodiment, the first synchronization component includes at least one first synchronization belt and at least two first synchronization pulleys, the first synchronization pulleys being connected one-to-one with the drive shafts within the group, and the first synchronization belt being wound around at least two of the first synchronization pulleys;

[0024] The second synchronization component includes a second synchronization belt and two second synchronization pulleys. One of the two adjacent sets of transmission shafts is connected to one of the second synchronization pulleys in a one-to-one correspondence. The second synchronization belt is wound around the two second synchronization pulleys.

[0025] In one embodiment, the magnetic stirring device further includes a temperature control component disposed on the support platform, the temperature control component being used to heat and / or cool the sample inside the container.

[0026] In one embodiment, the temperature control component includes a temperature control station and a temperature control mechanism. The temperature control station is disposed on the side of the support platform facing away from the driving member. The temperature control mechanism is connected to the temperature control station and is used to adjust the temperature of the temperature control station. The temperature control station is used to place a container and transfer its temperature to the container.

[0027] In one embodiment, the temperature control mechanism includes at least one of the following:

[0028] A heating film is attached to the side and / or bottom of the temperature control platform, and the heating film is used to heat the temperature control platform;

[0029] A heating rod is inserted inside the temperature control platform, and the heating rod is used to heat the temperature control platform;

[0030] A semiconductor refrigeration chip is attached to the side and / or bottom surface of the temperature control platform, and the semiconductor refrigeration chip is used to cool or heat the temperature control platform;

[0031] A temperature-controlled circulating pump is connected to a flow channel inside the temperature control platform. The temperature-controlled circulating pump is used to input fluid into the flow channel to cool or heat the temperature control platform.

[0032] In one embodiment, the temperature control mechanism includes the thermoelectric cooler, which is attached to two opposite sides of the temperature control platform and is used to cool the temperature control platform.

[0033] The temperature control component also includes a heat dissipation mechanism, which is disposed on two sides of the temperature control platform on which the semiconductor cooling chip is attached, and the heat dissipation mechanism is used to dissipate heat from the semiconductor cooling chip.

[0034] In one embodiment, the heat dissipation mechanism includes a fan, a heat sink, and an air duct cover. The heat sink is connected to the temperature control panel and corresponds to the semiconductor cooling chip. The air duct cover covers the heat sink and has openings at both ends in the extending direction of the heat sink. The fan is disposed at one of the openings.

[0035] In one embodiment, the heat dissipation mechanism includes a first heat dissipation component, a second heat dissipation component, and a refrigerant circulation pump. The first heat dissipation component and the second heat dissipation component each correspond to one of the semiconductor cooling chips. The first heat dissipation component has a first inlet, a first fluid pipeline, and a first outlet. The first fluid pipeline is connected to both the first inlet and the first outlet.

[0036] The second heat sink has a second inlet, a second fluid conduit, and a second outlet. The second fluid conduit is connected to both the second inlet and the second outlet, and the first outlet is connected to the second inlet.

[0037] The refrigerant circulation pump is connected to the first inlet and the second outlet. The refrigerant circulation pump is used to introduce refrigerant from the first inlet and to discharge the refrigerant that has passed through the first fluid pipeline and the second fluid pipeline from the second outlet.

[0038] In one embodiment, the temperature control platform has a plurality of receiving holes along the axial direction of the stirring shaft, and the plurality of receiving holes correspond one-to-one with the plurality of stirring shafts, with one end of the stirring shaft facing the magnetic component extending into the receiving hole;

[0039] The magnetic element is lower than the surface of the temperature control station facing away from the support platform; or, the magnetic element is flush with the surface of the temperature control station facing away from the support platform; or, the magnetic element protrudes from the surface of the temperature control station facing away from the support platform.

[0040] Secondly, this utility model provides an experimental device, including a container tray and a magnetic stirring device as described in any one of the various embodiments of the first aspect. The container tray is detachably connected to the magnetic stirring device. The container tray has a receiving hole for receiving a container. The magnetic stirring device drives the stir bar inside the container to rotate.

[0041] In one embodiment, the receiving holes are provided in a one-to-one correspondence with the magnetic components; or

[0042] The number of receiving holes is greater than the number of magnetic components. The container tray has multiple clearance holes on the bottom wall facing the magnetic stirring device. Each clearance hole corresponds to one of the magnetic components and is used to receive the magnetic components. At least two receiving holes are equally spaced around the circumference of each magnetic component.

[0043] This invention relates to a magnetic stirring device where a drive unit is connected to a transmission shaft. The transmission shaft, through a first transmission mechanism, drives at least two stirring elements to rotate synchronously. Each stirring element's shaft is equipped with a magnetic component, which, when rotating, drives a stir bar inside the container. Therefore, the sample to be stirred within the container also moves under the rotation of the stir bar, accelerating sample dissolution or related chemical reactions. This magnetic stirring device achieves multi-center magnetic stirring with a single drive unit, resulting in uniform stirring effects in multi-container reactions, thus helping to meet the high-throughput experimental requirements of magnetic stirring devices. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a perspective view of an experimental apparatus according to one embodiment;

[0046] Figure 2 A perspective view of a magnetic stirring apparatus according to one embodiment;

[0047] Figure 3 This is a perspective view of another embodiment of the magnetic stirring device;

[0048] Figure 4 This is a side view of a partial structure of a magnetic stirring device according to one embodiment;

[0049] Figure 5 yes Figure 4 A top view of the magnetic stirring device shown;

[0050] Figure 6 This is a schematic diagram of the transmission path of the second transmission mechanism in one embodiment;

[0051] Figure 7 This is a schematic diagram of the transmission path of the second transmission mechanism in another embodiment;

[0052] Figure 8 This is a schematic diagram of the transmission path of the second transmission mechanism in another embodiment;

[0053] Figure 9 This is a schematic diagram of the transmission path of the second transmission mechanism in another embodiment;

[0054] Figure 10 This is a schematic diagram illustrating the configuration of a first synchronization component and a second synchronization component according to one embodiment;

[0055] Figure 11 This is a schematic diagram illustrating the configuration of the first and second synchronization components in another embodiment;

[0056] Figure 12 This is a schematic diagram illustrating the configuration of the first and second synchronization components in another embodiment;

[0057] Figure 13 This is a perspective view of a temperature control component according to one embodiment;

[0058] Figure 14 This is a perspective view of a partial structure of a temperature control component according to one embodiment;

[0059] Figure 15 This is a perspective view of the structure of a temperature control component according to another embodiment.

[0060] Explanation of reference numerals in the attached figures:

[0061] 100-Magnetic stirring device, 10-Mounting box, 11-Supporting platform, 12-Motor board, 13-Power supply assembly, 131-Relay, 132-Cooling component, 133-Power board, 134-Dustproof connector, 14-Heat dissipation grille, 20-Drive component;

[0062] 30-Transmission assembly, 31-First transmission mechanism, 311-First transmission gear, 312-Second transmission gear, 32-Transmission shaft, 33-Second transmission mechanism, 331-First synchronization assembly, 3311-First synchronization belt, 3312-First synchronization pulley, 332-Second synchronization assembly, 3321-Second synchronization belt, 3322-Second synchronization pulley, 333-Tensioner, 36-Limiting element, 37-Third transmission mechanism;

[0063] 40 - Stirring component; 41 - Stirring shaft; 42 - Magnetic component;

[0064] 50-Temperature control component, 51-Temperature control panel, 511-Accommodation hole, 52-Temperature control mechanism, 521-Protection switch pressure plate, 522-Temperature sensor, 523-Temperature protection switch, 524-First insulation board, 53-Heat dissipation mechanism, 5311-Fan, 5312-Heat dissipation fin, 5313-Air duct cover, 532-First heat dissipation component, 5321-First inlet, 5322-First outlet, 533-Second heat dissipation component, 5331-Second inlet, 5332-Second outlet;

[0065] 200 - Container tray, 210 - Second insulation board, 300 - Container. Detailed Implementation

[0066] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0067] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or it can be in a middle component. When a component is said to be "connected" to another component, it can be directly connected to the other component or it may be in a middle component.

[0068] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this invention includes any and all combinations of one or more of the associated listed items.

[0069] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0070] Current magnetic stirring devices generally use a single drive unit to drive a single magnet to stir multiple containers, or a single drive unit to drive a single magnet to rotate. The number of containers is set one-to-one with the number of drive units and magnets. The former can easily lead to different stirring effects in different containers, while the latter solves the problem of inconsistent stirring effects, but it results in a large space occupation and high cost of the device.

[0071] For reference Figure 1 , Figure 3 and Figure 4This invention provides a magnetic stirring device 100, including a support platform 11, a driving member 20, a transmission assembly 30, and at least two stirring elements 40. The support platform 11 is used to place a container 300 containing a sample to be stirred. The driving member 20 is disposed on the side of the support platform 11 facing away from the container 300. The transmission assembly 30 includes a first transmission mechanism 31 and a transmission shaft 32. The driving member 20 is connected to the transmission shaft 32 and drives the transmission shaft 32 to rotate around its axis. At least two stirring elements 40 are spaced apart circumferentially along the transmission shaft 32. Each stirring element 40 includes a stirring shaft 41 and a magnetic element 42. The magnetic element 42 is disposed at the end of the stirring shaft 41 facing away from the driving member 20. The first transmission mechanism 31 connects the transmission shaft 32 and each stirring shaft 41. The driving member 20 drives the transmission shaft 32 to rotate, so that the transmission shaft 32 drives each stirring shaft 41 to rotate around its own axis via the first transmission mechanism 31, causing each magnetic element 42 to rotate.

[0072] Optionally, the magnetic stirring device 100 includes a mounting box 10, with a support platform 11 serving as the top plate of the mounting box 10, and the driving component 20 housed within the mounting box 10. The driving component 20 can be electrically driven, hydraulically driven, pneumatically driven, etc., without limitation. When the driving component 20 is electrically driven, it can correspond to a DC motor, AC motor, servo motor, stepper motor, etc.; when the driving component 20 is hydraulically driven, it can correspond to a hydraulic pump, hydraulic motor, hydraulic cylinder, etc.; when the driving component 20 is pneumatically driven, it can correspond to a cylinder, pneumatic motor, solenoid valve, etc., without limitation. The driving component 20 and the transmission shaft 32 can be directly or indirectly connected, without limitation.

[0073] Optionally, the magnetic stirring device 100 also includes a motor board 12, which is housed within the mounting box 10, and the drive unit 20 is fixedly mounted on the motor board 12. The magnetic stirring device 100 also includes a power supply assembly 13, which includes a relay 131, a cooling component 132, a power board 133, a dustproof connector 134, etc. The power board 133 provides the low-voltage DC power required for the control circuit of the relay 131, and the relay 131 controls the switching and rotation direction of the drive unit 20. The relay 131, cooling component 132, and power board 133 are housed within the mounting box 10, while the dustproof connector 134 is located outside the mounting box 10. The dustproof interface is connected to the power board 133, protecting the interface of the power board 133 from environmental factors such as dust and moisture, while ensuring a stable power supply to the power board 133.

[0074] Optionally, the side wall of the mounting box 10 is provided with a heat dissipation grille 14. The position of the heat dissipation grille 14 can correspond to that of the cooling component 132. The heat generated by the drive component 20, relay 131 and other components is discharged through the heat dissipation grille 14 via the cooling component 132. The cooling component 132 can be a cooling fan, exhaust fan, etc., and there are no restrictions.

[0075] Optionally, the material of the stirring shaft 41 can be polyphenylene sulfide (PPS), polytetrafluoroethylene (PTFE), polycarbonate (PC), polyoxymethylene (POM), nylon (PA), polyetheretherketone (PEEK), polyimide (PI), etc., without limitation. The connection method between the magnetic component 42 and the stirring shaft 41 can be adhesive, snap-fit, screw, etc., without limitation.

[0076] Optionally, both the drive shaft 32 and the stirring shaft 41 are rotatably connected to the support platform 11.

[0077] The magnetic stirring device 100 of this invention has a drive component 20 connected to a transmission shaft 32. The transmission shaft 32, through a first transmission mechanism 31, can drive at least two stirring elements 40 to rotate synchronously. Each stirring element 40 has a stirring shaft 41 equipped with a magnetic element 42, which, when rotating, drives a stir bar inside the container 300. Therefore, the sample to be stirred inside the container 300 also moves under the rotation of the stir bar, accelerating sample dissolution or related chemical reactions. The magnetic stirring device 100 of this invention can achieve multi-center magnetic stirring with a single drive component 20, resulting in uniform stirring effects in multiple containers 300, thus helping to meet the high-throughput experimental requirements of the magnetic stirring device 100.

[0078] For reference Figure 3 In one embodiment, the axis of the drive shaft 32 is parallel to the axis of each stirring shaft 41, and the rotation direction of each stirring shaft 41 is the same.

[0079] The fact that all stirring shafts 41 rotate in the same direction ensures that all magnetic components 42 rotate in the same direction and that all magnetic components 42 rotate synchronously, thereby minimizing the influence between adjacent magnetic components 42 and preventing the magnetic forces from canceling each other out and affecting the stirring effect.

[0080] Optionally, when the drive shaft 32 drives the stirring shaft 41 through an external meshing spur gear, the drive shaft 32 and the stirring shaft 41 rotate in opposite directions.

[0081] Optionally, the drive shaft 32 can achieve the reverse rotation of the stirring shaft 41 through an odd number of chain links of the sprocket.

[0082] Optionally, when the drive shaft 32 drives the stirring shaft 41 through the synchronous pulley and synchronous belt, the drive shaft 32 and the stirring shaft 41 can rotate in the same or opposite directions.

[0083] The parallel shaft structure eliminates the need for complex transmission components such as bevel gears or worm gears, significantly reducing the size of the magnetic stirring device 100 and enabling a high-density layout, which helps achieve a high-throughput configuration for the magnetic stirring device 100. Furthermore, the parallel shaft drive allows for the extensive use of standard components such as spur gears, sprockets, and synchronous pulleys, reducing device costs.

[0084] The transmission assembly 30 can be located below the support platform 11, above the support platform 11, or partially below and partially above the support platform 11; there are no specific restrictions.

[0085] For reference Figure 3 and Figure 5 In one embodiment, the first transmission mechanism 31 is located on the side of the support platform 11 facing away from the drive member 20. The transmission shaft 32 is rotatably connected to the support platform 11; the support platform 11 has a first mounting hole through it along the axial direction of the transmission shaft 32, the transmission shaft 32 passes through the first mounting hole and can rotate relative to the first mounting hole, and one end of the transmission shaft 32 facing away from the drive member 20 protrudes from the support platform 11 and is connected to the first transmission mechanism 31.

[0086] Each stirring shaft 41 is rotatably connected to the support platform 11; the support platform 11 is also provided with at least two second mounting holes along the axial direction of the transmission shaft 32, and the stirring shaft 41 corresponds to the second mounting hole one by one. The end of the stirring shaft 41 facing away from the magnetic component 42 extends into the second mounting hole and can rotate relative to the second mounting hole.

[0087] Optionally, the second mounting holes are spaced apart circumferentially from the first mounting holes. The second mounting holes may penetrate the support platform 11, or they may be blind holes; there are no restrictions.

[0088] Optionally, the transmission assembly 30 also includes a first bearing, which is configured to correspond one-to-one with the transmission shaft 32. The outer ring of the first bearing is connected and fixed to the wall of the first mounting hole, and the inner ring of the first bearing is connected and fixed to the transmission shaft 32. The inner ring of the first bearing rotates relative to the outer ring to realize the rotation of the transmission shaft 32 relative to the support platform 11.

[0089] Optionally, the transmission assembly 30 also includes a second bearing, which is configured to correspond one-to-one with the stirring shaft 41. The outer ring of the second bearing is connected and fixed to the inner wall of the second mounting hole, and the inner ring of the second bearing is connected and fixed to the stirring shaft 41. The inner ring of the second bearing rotates relative to the outer ring to realize the rotation of the stirring shaft 41 relative to the support platform 11.

[0090] Optionally, the transmission assembly 30 also includes a limiting member 36, which is disposed between the first transmission mechanism 31 and the support platform 11. The limiting member 36 is used to restrict the axial movement of the first bearing and the second bearing relative to the support platform 11. Specifically, the limiting member 36 is a sheet metal part, that is, the limiting member 36 is a thin metal plate. The connection method between the limiting member 36 and the support platform 11 can be welding, gluing, riveting, or bolting, etc., without limitation.

[0091] The first and second mounting holes provide installation space for the drive shaft 32 and the stirring shaft 41, facilitating the subsequent installation of the first transmission mechanism 31, and also limiting the relative position between the drive shaft 32 and the stirring shaft 41.

[0092] For reference Figure 5 In one embodiment, the first transmission mechanism 31 includes a first transmission gear 311 and at least two second transmission gears 312. The first transmission gear 311 is connected and fixed to the transmission shaft 32. Each second transmission gear 312 is spaced apart in the circumferential direction of the first transmission gear 311. The first transmission gear 311 and each second transmission gear 312 are meshed. Each second transmission gear 312 is connected to the stirring shaft 41 in a one-to-one correspondence.

[0093] Optionally, the outer peripheral surface of each second transmission gear 312 meshes with the outer peripheral surface of the first transmission gear 311.

[0094] Optionally, the drive shaft 32 passes through the center of the first drive gear 311 and is connected and fixed thereto; the stirring shaft 41 passes through the center of the second drive gear 312 and is connected and fixed thereto in a corresponding manner. The stirring shaft 41 and the drive shaft 32 can be connected to the first transmission mechanism 31 by snap-fit, screw-fit, bonding, welding, etc., without limitation.

[0095] By setting a first transmission gear 311 and multiple second transmission gears 312, the operation of one transmission shaft 32 driving multiple stirring shafts 41 to rotate is realized. At the same time, the energy loss of multiple energy conversions in traditional series transmission is avoided. No additional transmission structure is required, which simplifies the axial space occupation of the first transmission mechanism 31.

[0096] It is understood that the first transmission mechanism 31 can also be implemented in other ways, such as a combination of synchronous pulleys and synchronous belts, without any specific limitation. For example, the first transmission mechanism 31 includes multiple synchronous pulleys and at least one synchronous belt, with the transmission shaft 32 and the stirring shaft 41 connected to the synchronous pulleys one by one, and the synchronous belt wound around each synchronous pulley.

[0097] For reference Figure 3 and Figure 5In one embodiment, each stirring element 40 is arranged at equal intervals along the circumference of the drive shaft 32; there are two stirring elements 40, which are respectively located on opposite sides of the drive shaft 32 in the radial direction; or, there are at least three stirring elements 40, and the centers of the projections of each stirring element 40 in the axial direction of the drive shaft 32 are connected sequentially to form a regular polygon.

[0098] Specifically, when there are two agitators 40, the centers of the orthographic projections of the two agitators 40 and the drive shaft 32 along the axial direction of the drive shaft 32 are located on a straight line. When there are three agitators 40, the centers of the orthographic projections of each agitator 40 along the axial direction of the drive shaft 32 are connected sequentially to form an equilateral triangle. For example... Figure 5 As shown, when there are four stirring components 40, the centers of the orthographic projections of each stirring component 40 on the axial direction of the transmission shaft 32 are connected sequentially to form a square, and so on.

[0099] Optionally, the center of the orthographic projection of the drive shaft 32 in the axial direction of the drive shaft 32 is located at the geometric center of the regular polygon.

[0100] This configuration improves transmission stability and ensures a uniform magnetic field distribution.

[0101] Optionally, there can be N drive shafts 32, where N is a positive integer. The number of stirring components 40 (stirring centers) corresponding to the magnetic stirring device 100 can be 2N, 3N, 4N, 5N, etc., without limitation. Specifically, the number of stirring centers corresponding to the magnetic stirring device 100 can be 2, 3, 4, 6, 12, 24, 36, 48, etc., without limitation.

[0102] The stirring shafts 41 are arranged at equal intervals around the drive shaft 32, so that the projection of the center of the stirring component 40 onto the axis of the drive shaft 32 is evenly distributed on the circumference with the drive shaft 32 as the center, forming a rotationally symmetrical structure. This arrangement makes the radial force on the drive shaft 32 evenly distributed, avoiding bending or vibration of the drive shaft 32 due to uneven loading, thereby improving the transmission stability.

[0103] For reference Figures 3 to 5 In one embodiment, there are multiple drive shafts 32, which are spaced apart, and each drive shaft 32 has at least two stirring elements 40 arranged in the circumferential direction; there are multiple first transmission mechanisms 31, and the multiple drive shafts 32 correspond one-to-one with the multiple first transmission mechanisms 31; each drive shaft 32 is connected to at least two stirring elements 40 through the first transmission mechanism 31.

[0104] The transmission assembly 30 also includes a second transmission mechanism 33, through which multiple transmission shafts 32 are connected. The driving member 20 is connected to one of the multiple transmission shafts 32. The driving member 20 is used to drive the transmission shaft 32 connected to it to rotate, so that the transmission shaft 32 drives the other transmission shafts 32 to rotate through the second transmission mechanism 33. The rotation direction of each transmission shaft 32 is the same.

[0105] It is understood that "multiple" in the embodiments of this application refers to two or more.

[0106] Optionally, multiple drive shafts 32 are arranged in an array.

[0107] Optionally, the second transmission mechanism 33 can be a belt drive, gear drive, chain drive, etc., without limitation.

[0108] The magnetic stirring device 100 is equipped with multiple drive shafts 32, and each drive shaft 32 is connected to at least two stirring shafts 41. This enables the magnetic stirring device 100 to rotate in multiple centers, allowing the magnetic stirring device 100 to drive the stir bar in more containers 300 containing samples to be stirred to rotate, further increasing the experimental throughput and thus improving the working efficiency of the magnetic stirring device 100.

[0109] Specifically, such as Figure 5 As shown, the magnetic stirring device 100 of this utility model has 12 drive shafts 32, each drive shaft 32 corresponds to 4 stirring elements 40, the second transmission mechanism 33 is connected in series with the 12 drive shafts 32, the first transmission mechanism 31 drives the drive shafts 32 and the stirring elements 40, and the driving element 20 is driven connected to one of the drive shafts 32 (such as the drive shaft 32 near the middle position) or any drive shaft 32, so that a single driving element 20 drives 48 magnetic rotation centers. Correspondingly, the magnetic stirring device 100 of this utility model can simultaneously drive the stirring elements in 48 containers 300 to rotate.

[0110] For reference Figures 6 to 12 In one embodiment, the plurality of drive shafts 32 are divided into at least two groups (e.g., 2 groups, 3 groups, 4 groups, 5 groups, 6 groups, or other values), and each group of drive shafts 32 includes at least two drive shafts 32 (e.g., 2, 3, 4, 5, 6, or other values). The second transmission mechanism 33 includes a first synchronization component 331 and a second synchronization component 332. Each drive shaft 32 in each group of drive shafts 32 is connected by the first synchronization component 331, and each adjacent group of drive shafts 32 is connected by the second synchronization component 332. The number of first synchronization components 331 is the same as the number of groups of drive shafts 32.

[0111] Optionally, the first synchronization component 331 may be a synchronous belt pulley drive or a gear drive, and the second synchronization component 332 may be a synchronous belt pulley drive, a coupling or universal joint, a gear drive structure (such as a bevel gear or planetary gear structure), etc.

[0112] Optionally, the number of drive shafts 32 included in each group of drive shafts 32 may be the same or different, without limitation.

[0113] Optionally, each pair of adjacent drive shafts 32 can be connected by at least one second synchronization component 332, the number of which is greater than or equal to the number of drive shafts 32 minus 1.

[0114] Each group of drive shafts 32 and its matching first synchronization component 331 constitute an independent module. The modular structure reduces the complexity of the system and makes it easy to adjust the number or groups of drive shafts 32 according to actual needs. The layered design of intra-group transmission and inter-group transmission makes it difficult for local errors of a certain group of drive shafts 32 (such as shaft bending and gear wear) to be transmitted to other groups, thus improving the system's fault tolerance. After grouping, multiple groups of drive shafts 32 can drive the rotation of multiple stirring components 40, thereby completing the high-throughput setting of the magnetic stirring device 100.

[0115] For reference Figures 6 to 12 In one embodiment, the first synchronization component 331 includes at least one first synchronization belt 3311 and at least two first synchronization pulleys 3312. The first synchronization pulleys 3312 are connected one-to-one with the drive shafts 32 in the group, and the first synchronization belt 3311 is wound around the at least two first synchronization pulleys 3312. The second synchronization component 332 includes a second synchronization belt 3321 and two second synchronization pulleys 3322. One drive shaft 32 in each of two adjacent groups of drive shafts 32 is connected one-to-one with the second synchronization pulleys 3322, and the second synchronization belt 3321 is wound around the two second synchronization pulleys 3322.

[0116] Optional, such as Figure 10 , Figure 11 and Figure 12 As shown, the second transmission mechanism 33 also includes a tensioning pulley 333, which is wound around the first synchronous belt 3311 and / or the second synchronous belt 3321. The tensioning pulley 333 is used to tension the first synchronous belt 3311 and / or the second synchronous belt 3321. The tensioning pulley 333 can be located on the inner side of the first synchronous belt 3311, the outer side of the first synchronous pulley 3312, the inner side of the second synchronous belt 3321, or the outer side of the second synchronous belt 3321, without limitation. The number of tensioning pulleys 333 can be one or more, without limitation. The tensioning pulley 333 can compensate for the elongation through an automatic adjustment mechanism, so that the first synchronous belt 3311 and the second synchronous belt 3321 maintain the initial tension state and prevent the first synchronous belt 3311 and the second synchronous belt 3321 from slipping.

[0117] Optionally, the second synchronous pulley 3322 and the first synchronous pulley 3312 are spaced apart on the same drive shaft 32 to realize the transmission connection between the two sets of drive shafts 32.

[0118] For example, refer to Figures 6 to 9 The first synchronization component 331 includes a first synchronization belt 3311 and two first synchronization pulleys 3312, and each set of transmission shafts 32 includes two transmission shafts 32. Figures 6 to 9 This corresponds to the four different transmission paths of the second transmission mechanism 33. Figures 6 to 9 The first synchronizer pulley 3312 at the beginning of the transmission path can be connected to the drive component 20, and the transmission connection between multiple transmission shafts 32 is realized through the first synchronizer assembly 331 and the second synchronizer assembly 332. The beginning and end of each transmission path can be switched according to the first synchronizer pulley 3312 connected to the drive component 20.

[0119] For example, refer to Figures 10 to 12 The magnetic stirring device 100 includes two sets of drive shafts 32, each set of drive shafts 32 including six drive shafts 32. The two sets of drive shafts 32 are connected by a second synchronous belt 3321 and two second synchronous pulleys 3322. Each set of drive shafts 32 is provided with a first synchronous belt 3311 and six first synchronous pulleys 3312, and each first synchronous pulley 3312 is connected to one drive shaft 32. The two sets of drive shafts 32 correspond to one second synchronous component 332, which includes two second synchronous pulleys 3322 and a second synchronous belt 3321. One drive shaft 32 in one set of drive shafts 32 and one drive shaft 32 in an adjacent set of drive shafts 32 are respectively connected to one second synchronous pulley 3322. That is, these two drive shafts 32 serve to connect the drive shafts 32 within their respective sets and also to connect the drive shafts 32 between sets. Moreover, each drive shaft 32 is connected to both a first synchronous pulley 3312 and a second synchronous pulley 3322. Multiple tensioning pulleys 333 are spaced apart on the outer side of the first synchronous belt 3311 to tension the first synchronous belt 3311.

[0120] Understandably, although Figures 10 to 12 Only one second synchronization component 332 is provided between the two sets of drive shafts 32. To improve transmission stability, two or more second synchronization components 332 can be provided, such as... Figures 10 to 12 The second synchronization component 332 is combined with it, and there are no specific restrictions.

[0121] The first synchronization assembly 331 and the second synchronization assembly 332, which are configured with synchronous belt pulleys, enable intra-group and inter-group transmission. The transmission ratio of the synchronous belt is precise, ensuring that all transmission shafts 32 rotate synchronously. The synchronous pulleys mesh with the synchronous belt to transmit power. This configuration gives the first synchronization assembly 331 and the second synchronization assembly 332 advantages such as high efficiency, stability, and low noise.

[0122] For reference Figure 3 In one embodiment, the drive shaft 32 can be directly connected to the drive member 20, or the drive shaft 32 can be indirectly connected to the drive member 20. The transmission assembly 30 also includes a third transmission mechanism 37, which connects the drive member 20 and the drive shaft 32. The third rotation mechanism can be a coupling drive, gear drive, chain drive, etc., and is not limited thereto.

[0123] In one embodiment, the transmission assembly 30 further includes a detection element disposed at the second transmission mechanism 33. The detection element is used to detect the operating state of the second transmission mechanism 33. The detection element can be a photoelectric sensor, an acceleration sensor, a laser sensor, etc., and is not limited thereto.

[0124] Optionally, the detection components include a photoelectric sensor and a sensing element. The photoelectric sensor is fixedly mounted on the support platform 11 and located at the rearmost first synchronous pulley 3312 in the transmission path, for example, at the first synchronous pulley 3312 that is farthest from the transmission shaft 32 connected to the drive component 20. The sensing element is mounted on the first synchronous belt 3311 corresponding to the first synchronous pulley 3312 and can move with the first synchronous belt 3311 and be inserted into the photoelectric sensor to cause a signal change in the photoelectric sensor. When the first synchronous belt 3311 or the second synchronous belt 3321 breaks or detaches, causing the drive to be unable to be transmitted to the rear, the abnormal operation of the second transmission mechanism 33 can be detected in real time, so that the staff can handle it in time.

[0125] It is understandable that the detection component can also be set at the first transmission mechanism 31 to detect the working status of the first transmission mechanism 31. The specific implementation can be referred to the above-described settings, and will not be repeated here.

[0126] For reference Figure 1 In one embodiment, the magnetic stirring device 100 further includes a temperature control component 50, which is disposed on the support platform 11 and is used to heat and / or cool the sample in the container 300.

[0127] Optionally, the temperature control component 50 and the support platform 11 are detachably connected. Specifically, the connection method between the temperature control component 50 and the support platform 11 can be screwed, snap-fitted, or pin-connected, etc., without limitation. The temperature control range of the temperature control component 50 is -30℃ to 150℃.

[0128] The magnetic stirrer 100 with temperature control component 50 helps to heat or cool the sample to be stirred in container 300 according to the temperature requirements of different reactions, thus expanding the application range of magnetic stirrer 100.

[0129] For reference Figure 13 and Figure 14 In one embodiment, the temperature control component 50 includes a temperature control station 51 and a temperature control mechanism 52. The temperature control station 51 is disposed on the side of the support platform 11 facing away from the drive member 20. The temperature control mechanism 52 is connected to the temperature control station 51 and is used to adjust the temperature of the temperature control station 51. The temperature control station 51 is used to place the container 300 and transfer its temperature to the container 300.

[0130] Optionally, the temperature control mechanism 52 includes a protection switch plate 521, a temperature sensor 522, and a temperature protection switch 523. The protection switch plate 521 is used to attach the temperature protection switch 523 to the temperature control panel 51. The outer surfaces of the temperature sensor 522 and the temperature protection switch 523 are coated with thermally conductive silicone grease to ensure full contact with the temperature control panel 51 and improve the sensitivity of the temperature sensor 522 and the temperature protection switch 523. The temperature protection switch 523 contains a bimetallic strip or a thermistor (such as a PTC thermistor). When the temperature exceeds a preset threshold, the bimetallic strip bends due to heat or the resistance of the thermistor changes abruptly, triggering a mechanical or electronic switch to cut off the circuit and prevent thermal runaway of the temperature control panel 51 and related structures.

[0131] The temperature control mechanism 52 can precisely control the temperature of the temperature control station 51 according to the needs of experiments or production. The existing magnetic stirring device 100 has a relatively simple temperature control method. The magnetic stirring device 100 of this utility model can quickly and accurately achieve heating, cooling and constant temperature operation, meeting the strict temperature requirements of different experiments or production processes.

[0132] In one embodiment, the temperature control mechanism 52 includes at least one of the following: a heating film, attached to the side and / or bottom surface of the temperature control platform 51, used to heat the temperature control platform 51; a heating rod, inserted into the interior of the temperature control platform 51, used to heat the temperature control platform 51; a thermoelectric cooler, attached to the side and / or bottom surface of the temperature control platform 51, used to cool or heat the temperature control platform 51; and a temperature-controlled circulation pump, connected to a flow channel inside the temperature control platform 51, used to input fluid into the flow channel to cool or heat the temperature control platform 51.

[0133] For reference Figure 14 and Figure 15Optionally, the temperature control mechanism 52 also includes a first insulation plate 524, which is attached to the bottom wall and / or outer wall of the temperature control console 51. The connection between the first insulation plate 524 and the temperature control console 51 can be adhesive, screwed, snap-fit, etc., without limitation. The material of the first insulation plate 524 can be polyphenylene sulfide (PPS), polytetrafluoroethylene (PTFE), phenolic resin (PF), silicone rubber (SiR), insulation cotton, sponge, foam film, etc., without limitation. Specifically, the first insulation plate 524 is provided on all four side walls and the bottom wall of the temperature control console 51.

[0134] Optionally, the heating film can be a silicone heating film, a polyimide heating film, an epoxy heating film, a polyester heating film, etc., without limitation.

[0135] Optionally, the heating rod can be a metal heating rod, a ceramic heating rod, a quartz heating rod, etc., or a resistance heating rod, an induction heating rod, a microwave heating rod, etc., without limitation. There can be multiple heating rods, which are arranged at intervals.

[0136] Optionally, the thermoelectric cooler includes a cold side and a hot side, and the cold side and hot side of the thermoelectric cooler can be switched by the direction of the current flowing into the thermoelectric cooler. When the thermoelectric cooler cools the temperature control station 51, the cold side is in close contact with the temperature control station 51; when the thermoelectric cooler heats the temperature control station 51, the hot side is in close contact with the temperature control station 51.

[0137] Optionally, the temperature-controlled circulating pump can be a low-temperature circulating pump or a high-temperature circulating pump, and the fluid can be a gas or a liquid (such as water, antifreeze, heat transfer oil, etc.), without restriction. The low-temperature circulating pump and the high-temperature circulating pump can be centrifugal, reciprocating, etc., without restriction.

[0138] Setting specific heating and cooling components to control the temperature of container 300 and the sample to be stirred within it helps broaden the application scenarios of the magnetic stirring device 100. Furthermore, completing stirring and temperature control simultaneously within a single device helps save experimental time and improve experimental efficiency.

[0139] For reference Figure 13 In one embodiment, the temperature control mechanism 52 includes a thermoelectric cooler attached to two opposite sides of the temperature control platform 51, which is used to cool the temperature control platform 51. The temperature control assembly 50 also includes a heat dissipation mechanism 53 disposed on the two sides of the temperature control platform 51 on which the thermoelectric cooler is attached, which is used to dissipate heat from the thermoelectric cooler.

[0140] Specifically, the heat dissipation mechanism 53 is used to dissipate heat from the hot surface of the semiconductor cooling chip during the cooling process.

[0141] Optionally, the connection between the heat dissipation mechanism 53 and the temperature control station 51 can be screwed, welded, glued, snap-fitted, etc., without restriction. The heat dissipation mechanisms 53 corresponding to the two semiconductor cooling chips can be the same or different, without restriction. The heat dissipation type of the heat dissipation mechanism 53 can be any of the following: air cooling, liquid cooling, phase change cooling, heat pipe cooling, or vapor chamber cooling, without restriction.

[0142] When a thermoelectric cooler achieves cooling through the Peltier effect, the cold side absorbs heat while the hot side releases an equal amount of heat (including additional Joule heat). If the hot side does not dissipate heat sufficiently, the heat will be transferred back to the cold side, leading to a decrease in cooling efficiency or even system failure. Excessive heat can also be transferred to other components, affecting their normal operation. The heat dissipation mechanism 53, which provides heat dissipation to the hot side of the thermoelectric cooler, helps maintain cooling efficiency and ensures system stability.

[0143] For reference Figure 13 and Figure 14 In one embodiment, the heat dissipation mechanism 53 includes a fan 5311, a heat sink 5312, and an air duct cover 5313. The heat sink 5312 is connected to the temperature control panel 51 and corresponds to the semiconductor cooling chip. The air duct cover 5313 covers the heat sink 5312 and has openings at both ends in the extending direction of the heat sink 5312. The fan 5311 is disposed at one of the openings.

[0144] Optionally, the heatsink 5312 can be made of a high thermal conductivity material, specifically aluminum and aluminum alloys, copper and copper alloys, graphene-reinforced heatsink 5312, etc., without limitation. The heatsink 5312 can be designed in different shapes, such as needle-like, fin-like, columnar, etc. The heatsink 5312 forms a heat dissipation channel, and the air blown out by the fan 5311 carries away heat along the heat dissipation channel. The connection between the air channel cover 5313 and the heatsink 5312 can be screwed, welded, glued, snap-fitted, etc., without limitation. The fan 5311 can use a hydraulic bearing, a double ball bearing, or a magnetic levitation bearing to reduce noise.

[0145] Specifically, there are two fans 5311, two heat sinks 5312, and two air duct covers 5313, and each corresponds to one of the two thermoelectric coolers.

[0146] By employing air cooling to dissipate heat from the hot surface of the thermoelectric cooler, the temperature control station 51 can reach a temperature range of 0℃-150℃, ensuring the cooling efficiency of the thermoelectric cooler. At the same time, the air cooling structure is simpler and easier to match with the thermoelectric cooler.

[0147] For reference Figure 15In one embodiment, the heat dissipation mechanism 53 includes a first heat dissipation component 532, a second heat dissipation component 533, and a refrigerant circulation pump. The first heat dissipation component 532 and the second heat dissipation component 533 each correspond to a semiconductor cooling chip. The first heat dissipation component 532 has a first inlet 5321, a first fluid pipeline, and a first outlet 5322. The first fluid pipeline is connected to both the first inlet 5321 and the first outlet 5322.

[0148] The second heat sink 533 has a second inlet 5331, a second fluid pipeline and a second outlet 5332. The second fluid pipeline is connected to both the second inlet 5331 and the second outlet 5332. The first outlet 5322 is connected to the second inlet 5331.

[0149] The refrigerant circulation pump is connected to the first inlet 5321 and the second outlet 5332. The refrigerant circulation pump is used to introduce refrigerant from the first inlet 5321 and to discharge the refrigerant that has passed through the first fluid pipeline and the second fluid pipeline from the second outlet 5332.

[0150] Optionally, the first heat sink 532 and the second heat sink 533 are made of high thermal conductivity materials, such as aluminum alloy or copper alloy. Furthermore, both the first heat sink 532 and the second heat sink 533 are in close contact with the hot surface of their respective semiconductor cooling chips.

[0151] Optionally, the cooling medium can be liquid or gaseous. Specifically, the cooling medium can be water, coolant, or heat transfer oil, without any restrictions.

[0152] Optionally, the refrigerant circulation pump can be a vane pump, positive displacement pump, centrifugal pump, gear pump, etc., without restriction.

[0153] Optionally, the first and second fluid lines can be parallel straight pipes, U-shaped pipes, serpentine pipes, spiral coils, etc., without restriction. Specifically, the first fluid line at the first inlet 5321 is wide, the first fluid line at the first outlet 5322 is narrow, the second fluid line at the second inlet 5331 is wide, and the second fluid line at the second outlet 5332 is narrow, which increases the flow velocity of the cooling medium at the first outlet 5322 and the second outlet 5332, thereby improving the convective heat transfer capacity.

[0154] Optionally, the first inlet 5321 and the first outlet 5322 can be spaced apart and disposed on the same side of the first heat sink 532, or they can be disposed on opposite sides of the first heat sink 532, without limitation. Correspondingly, the second inlet 5331 and the second outlet 5332 can be spaced apart and disposed on the same side of the second heat sink 533, or they can be disposed on opposite sides of the second heat sink 533, without limitation. The placement of the first inlet 5321 and the second outlet 5332 on the same side of the first heat sink 532 and the second heat sink 533 facilitates the installation of the refrigerant circulation pump; the placement of the first outlet 5322 and the second inlet 5331 on the same side of the first heat sink 532 and the second heat sink 533 facilitates communication between them.

[0155] Optionally, the refrigerant circulation pump is equipped with seals at the connection points of the first inlet 5321 and the second outlet 5332. The seals can be made of rubber (nitrile rubber, fluororubber, EPDM rubber, silicone rubber, hydrogenated nitrile rubber), plastic (fluoroplastics, nylon, polyurethane), etc., without limitation. The seals can be O-rings, plug seals, etc.

[0156] The first heat sink 532 and the second heat sink 533 are respectively used to dissipate heat from the two thermoelectric coolers. The temperature range of this temperature control station 51 can reach -30℃ to 150℃, which can ensure the cooling efficiency of the thermoelectric coolers and avoid the reduction of service life caused by overheating of the internal junctions of the thermoelectric coolers. At the same time, the first heat sink 532 and the second heat sink 533, which use fluid heat dissipation, have low operating noise and high energy efficiency.

[0157] For reference Figure 13 , Figure 14 and Figure 15 In one embodiment, the temperature control platform 51 has a plurality of receiving holes 511 along the axial direction of the stirring shaft 41, with each receiving hole 511 corresponding to a plurality of stirring shafts 41. The end of the stirring shaft 41 facing the magnetic component 42 extends into the receiving hole 511. The magnetic component 42 is lower than the surface of the temperature control platform 51 facing away from the support platform 11. Alternatively, the magnetic component 42 is flush with the surface of the temperature control platform 51 facing away from the support platform 11. Alternatively, the magnetic component 42 protrudes from the surface of the temperature control platform 51 facing away from the support platform 11.

[0158] Optionally, the drive shaft 32 passes through the support platform 11, and the temperature control platform 51 does not need to have a hole to accommodate the drive shaft 32.

[0159] Optionally, the receiving hole 511 can be a blind hole or a through hole, without limitation. When the receiving hole 511 is a blind hole, the magnetic element 42 is lower than the surface of the temperature control table 51 facing away from the support table 11; when the receiving hole 511 is a through hole, the magnetic element 42 protrudes from the surface of the temperature control table 51 facing away from the support table 11, or the magnetic element 42 is flush with the surface of the temperature control table 51 facing away from the support table 11.

[0160] The temperature control platform 51 is equipped with receiving holes 511 corresponding to the magnetic component 42 and the stirring shaft 41. Under the premise that the magnetic components 42 do not interfere with each other, the distance between the magnetic component 42 and the stir bar in the container 300 is reduced, which makes the magnetic coupling efficiency between the magnetic component 42 and the stir bar higher. This makes the magnetic component 42 drive the stir bar to rotate more stably and powerfully, thereby enhancing the stirring effect on the sample to be stirred in the container 300.

[0161] Specifically, in one embodiment, the implementation steps of the magnetic stirring device 100 of this utility model are as follows: a semiconductor cooling chip is used as a cooling element, and a heating film is used as a heating element. During cooling, the semiconductor cooling chip transfers the heat from the temperature control station 51 to the hot surface, and the heat dissipation mechanism 53 dissipates heat from the hot surface. During heating, the heating film is energized and generates heat. When the magnetic stirring device 100 has multiple magnetic centers, the driving component 20 drives one of the transmission shafts 32 to rotate. The transmission shaft 32 drives the other transmission shafts 32 to rotate through the second transmission mechanism 33. Each transmission shaft 32 then drives multiple stirring shafts 41 to rotate through the first transmission mechanism 31.

[0162] For reference Figure 2 and Figure 3 This utility model provides another magnetic stirring device 100. Compared with the aforementioned magnetic stirring device 100, this embodiment provides multiple drive shafts 32, eliminates the first drive mechanism 31 and stirring shaft 41, and directly sets the magnetic component 42 on the drive shaft 32. The multiple drive shafts 32 are connected by a second drive mechanism 33.

[0163] For example, there are 12 drive shafts 32 and 12 magnetic elements 42, with each magnetic element 42 disposed at one end of the drive shaft 32 to form 12 magnetic rotation centers. When the magnetic stirring device 100 is in operation, the drive member 20 drives one of the drive shafts 32, which drives the remaining drive shafts 32 to rotate through a second transmission mechanism 33 connected thereto. When the magnetic stirring device 100 corresponding to the 12 magnetic rotation centers drives the stir bar in 48 containers 300 to rotate, one magnetic component 42 drives four containers 300. To ensure the consistency of stirring in each container 300, the drive shaft 32 passes through the support platform 11 and the temperature control platform 51, and the bottom of the container tray 200 is also provided with a clearance hole so that the magnetic component 42 can enter the clearance hole, thereby realizing that one magnetic component 42 drives four containers 300 to stir evenly. When the magnetic stirring device 100 corresponding to the 12 magnetic rotation centers drives the stir bar in 12 containers 300 to rotate, one magnetic component 42 drives one container 300. The magnetic component 42 can be located below the container tray 200, such as the end face of the temperature control platform 51 facing away from the drive component 20.

[0164] For reference Figure 1 and Figure 2 This utility model provides an experimental device, including a container tray 200 and a magnetic stirring device 100 as described in any of the aforementioned embodiments. The container tray 200 and the magnetic stirring device 100 are detachably connected. The container tray 200 has a receiving hole for receiving a container 300. The magnetic stirring device 100 drives the stir bar inside the container 300 to rotate.

[0165] Optionally, the connection between the container tray 200 and the magnetic stirring device 100 can be by screw connection, pin connection, snap connection, etc., without limitation.

[0166] Optionally, the container pallet 200 includes a pallet body and a second insulation board 210. The second insulation board 210 can be disposed on the side, top, and / or bottom surface of the pallet body, and the pallet body has receiving holes. The material of the pallet body can be aluminum and aluminum alloys, copper and copper alloys, thermally conductive ceramics, etc., without limitation. The material of the second insulation board 210 can be polyphenylene sulfide (PPS), polytetrafluoroethylene (PTFE), phenolic resin (PF), silicone rubber (SiR), etc., without limitation. Specifically, the second insulation board 210 is disposed on the four side walls and bottom wall of the pallet body.

[0167] Optionally, the size and number of receiving holes can be set according to the specifications of container 300. For example, when the volume of container 300 is 8ml, the number of receiving holes can be 48; when the volume of container 300 is 40ml, the number of receiving holes can be 12. The number of receiving holes can also be 4, 6, 8, 10, 16, 20, 24, 30, 36 or other values, without limitation.

[0168] During use, the experimental equipment of this invention has a container 300 containing the sample to be stirred and a stir bar housed in the receiving hole of the container tray 200. The magnetic stirring device 100 drives the stir bar inside the container 300 to rotate so that the sample is thoroughly stirred. The experimental equipment of this invention can simultaneously drive multiple containers 300 to perform stirring operations, realizing high-throughput stirring of multiple containers 300 corresponding to multiple magnetic stirring centers, and the stirring effect is consistent.

[0169] In one embodiment, the receiving holes are provided one-to-one with the magnetic components 42, that is, the number of receiving holes is the same as the number of magnetic components 42; or, the number of receiving holes is greater than the number of magnetic components 42, and the container tray 200 is provided with a plurality of clearance holes facing the bottom wall of the magnetic stirring device 100, the plurality of clearance holes are one-to-one with a plurality of magnetic components 42, and the clearance holes are used to receive the magnetic components 42.

[0170] Optionally, each magnetic element 42 may have at least two receiving holes evenly spaced around its circumference. This arrangement helps to ensure uniform stirring in the multiple containers 300. For example, the number of receiving holes corresponding to each magnetic element 42 may be 2, 3, 4, 5, 6, or other values; or, the number of receiving holes corresponding to different magnetic elements 42 may be partially the same or completely different, such as some magnetic elements 42 corresponding to 2 receiving holes, some magnetic elements 42 corresponding to 3 receiving holes, and some magnetic elements 42 corresponding to 4 receiving holes.

[0171] Optionally, the number of receiving holes is a multiple of the number of magnetic components 42, meaning that the number of receiving holes corresponding to each magnetic component 42 is the same. For example, if there are 12 magnetic components 42 and 48 receiving holes, a clearance hole is formed on the bottom surface at the center of the area enclosed by every 4 receiving holes, thus forming 12 clearance holes. The 12 magnetic components 42 extend into the 12 clearance holes respectively. This arrangement ensures that the magnetic force exerted by each magnetic component 42 on the corresponding multiple containers 300 is approximately equal, resulting in a consistent stirring effect.

[0172] Optionally, the corresponding container tray 200 can be selected based on the number and layout of the magnetic components 42.

[0173] Setting clearance holes helps to reduce the straight-line distance between the magnetic component 42 and the stir bar, prevents the stir bar from tilting towards the magnetic component 42, improves the magnetic coupling efficiency between the magnetic component 42 and the stir bar, and enhances the stirring effect of the stir bar.

[0174] In the description of the embodiments of this utility model, it should be noted that the orientation or positional relationship of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other indicators are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0175] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the present utility model.

Claims

1. A magnetic stirring device, characterized in that, include: A support platform is used to place containers containing samples to be stirred. A driving component is disposed on the side of the support platform facing away from the container; A transmission assembly includes a first transmission mechanism and a transmission shaft, wherein the driving member is connected to the transmission shaft and is used to drive the transmission shaft to rotate about the axis of the transmission shaft; At least two stirring elements are arranged circumferentially along the drive shaft. Each stirring element includes a stirring shaft and a magnetic element. The magnetic element is disposed at the end of the stirring shaft facing away from the drive element. The first transmission mechanism is respectively connected to the drive shaft and each stirring shaft. The driving component drives the transmission shaft to rotate, so that the transmission shaft drives each of the stirring shafts to rotate around its own axis through the first transmission mechanism, so that each of the magnetic components rotates.

2. The magnetic stirring device according to claim 1, characterized in that, The axis of the drive shaft is parallel to the axis of each of the stirring shafts, and the rotation direction of each of the stirring shafts is the same.

3. The magnetic stirring device according to claim 1, characterized in that, The first transmission mechanism is located on the side of the support platform facing away from the driving member; The drive shaft is rotatably connected to the support platform; the support platform has a first mounting hole through it along the axial direction of the drive shaft, the drive shaft passes through the first mounting hole and can rotate relative to the first mounting hole, and one end of the drive shaft facing away from the drive member protrudes from the support platform and is connected to the first transmission mechanism. Each of the stirring shafts is rotatably connected to the support platform; the support platform is also provided with at least two second mounting holes along the axial direction of the transmission shaft, and the stirring shaft corresponds to the second mounting hole one by one. The end of the stirring shaft facing away from the magnetic component extends into the second mounting hole and can rotate relative to the second mounting hole.

4. The magnetic stirring device according to claim 3, characterized in that, The first transmission mechanism includes a first transmission gear and at least two second transmission gears. The first transmission gear is fixedly connected to the transmission shaft. Each of the second transmission gears is spaced apart in the circumferential direction of the first transmission gear. The first transmission gear and each of the second transmission gears are meshed. Each of the second transmission gears is connected to the stirring shaft in a one-to-one correspondence.

5. The magnetic stirring device according to claim 1, characterized in that, The stirring components are arranged at equal intervals along the circumference of the drive shaft; There are two agitators, which are respectively located on opposite sides of the drive shaft in the radial direction; or The stirring element is at least three, and the centers of the projections of each stirring element in the axial direction of the drive shaft are connected sequentially to form a regular polygon; the center of the projection of the drive shaft in the axial direction of the drive shaft is located at the geometric center of the regular polygon.

6. The magnetic stirring apparatus according to any one of claims 1-5, characterized in that, There are multiple drive shafts, which are spaced apart, and each drive shaft has at least two stirring elements arranged in its circumferential direction; there are multiple first transmission mechanisms, and each of the multiple drive shafts corresponds to one of the multiple first transmission mechanisms; each drive shaft is connected to at least two stirring elements through the first transmission mechanism. The transmission assembly further includes a second transmission mechanism, through which the plurality of transmission shafts are connected. The driving member is connected to one of the plurality of transmission shafts and is used to drive the transmission shaft connected thereto to rotate, so that the transmission shaft drives the other transmission shafts to rotate through the second transmission mechanism. The rotation directions of each transmission shaft are the same.

7. The magnetic stirring device according to claim 6, characterized in that, The plurality of drive shafts are divided into at least two groups, and each group of drive shafts includes at least two drive shafts; The second transmission mechanism includes a first synchronization component and a second synchronization component. Each transmission shaft in each group of transmission shafts is connected by the first synchronization component, and each pair of adjacent groups of transmission shafts is connected by the second synchronization component. The number of the first synchronization components is the same as the number of groups of transmission shafts.

8. The magnetic stirring device according to claim 7, characterized in that, The first synchronization component includes at least one first synchronization belt and at least two first synchronization pulleys. The first synchronization pulleys are connected to the drive shafts in the group one by one, and the first synchronization belt is wound around the at least two first synchronization pulleys. The second synchronization component includes a second synchronization belt and two second synchronization pulleys. One of the two adjacent sets of transmission shafts is connected to one of the second synchronization pulleys in a one-to-one correspondence. The second synchronization belt is wound around the two second synchronization pulleys.

9. The magnetic stirring device according to claim 1, characterized in that, The magnetic stirring device also includes a temperature control component, which is disposed on the support platform and is used to heat and / or cool the sample in the container.

10. The magnetic stirring device according to claim 9, characterized in that, The temperature control component includes a temperature control station and a temperature control mechanism. The temperature control station is located on the side of the support platform facing away from the drive component. The temperature control mechanism is connected to the temperature control station and is used to adjust the temperature of the temperature control station. The temperature control station is used to place the container and transfer its temperature to the container.

11. The magnetic stirring device according to claim 10, characterized in that, The temperature control mechanism includes at least one of the following: A heating film is attached to the side and / or bottom of the temperature control platform, and the heating film is used to heat the temperature control platform; A heating rod is inserted inside the temperature control platform, and the heating rod is used to heat the temperature control platform; A semiconductor refrigeration chip is attached to the side and / or bottom surface of the temperature control platform, and the semiconductor refrigeration chip is used to cool or heat the temperature control platform; A temperature-controlled circulating pump is connected to a flow channel inside the temperature control platform. The temperature-controlled circulating pump is used to input fluid into the flow channel to cool or heat the temperature control platform.

12. The magnetic stirring device according to claim 11, characterized in that, The temperature control mechanism includes the semiconductor cooling chip, which is attached to two opposite sides of the temperature control platform and is used to cool the temperature control platform. The temperature control component also includes a heat dissipation mechanism, which is disposed on two sides of the temperature control platform on which the semiconductor cooling chip is attached, and the heat dissipation mechanism is used to dissipate heat from the semiconductor cooling chip.

13. The magnetic stirring device according to claim 12, characterized in that, The heat dissipation mechanism includes a fan, a heat sink, and an air duct cover. The heat sink is connected to the temperature control panel and corresponds to the semiconductor cooling chip. The air duct cover is disposed on the heat sink and has openings at both ends in the extension direction of the heat sink. The fan is disposed at one of the openings.

14. The magnetic stirring device according to claim 12, characterized in that, The heat dissipation mechanism includes a first heat dissipation component, a second heat dissipation component, and a refrigerant circulation pump. The first heat dissipation component and the second heat dissipation component each correspond to one of the semiconductor cooling chips. The first heat dissipation component has a first inlet, a first fluid pipeline, and a first outlet. The first fluid pipeline is connected to both the first inlet and the first outlet. The second heat sink has a second inlet, a second fluid conduit, and a second outlet. The second fluid conduit is connected to both the second inlet and the second outlet, and the first outlet is connected to the second inlet. The refrigerant circulation pump is connected to the first inlet and the second outlet. The refrigerant circulation pump is used to introduce refrigerant from the first inlet and to discharge the refrigerant that has passed through the first fluid pipeline and the second fluid pipeline from the second outlet.

15. The magnetic stirring device according to claim 10, characterized in that, The temperature control platform has multiple receiving holes along the axial direction of the stirring shaft, and each of the multiple receiving holes corresponds to one of the multiple stirring shafts. The end of the stirring shaft facing the magnetic component extends into the receiving hole. The magnetic element is lower than the surface of the temperature control station facing away from the support platform; or, the magnetic element is flush with the surface of the temperature control station facing away from the support platform; or, the magnetic element protrudes from the surface of the temperature control station facing away from the support platform.

16. An experimental apparatus, characterized in that, The device includes a container tray and a magnetic stirring device as described in any one of claims 1 to 15, wherein the container tray is detachably connected to the magnetic stirring device, the container tray has a receiving hole for receiving a container, and the magnetic stirring device drives a stir bar inside the container to rotate.

17. The experimental apparatus according to claim 16, characterized in that, The receiving holes are provided in a one-to-one correspondence with the magnetic components; or The number of receiving holes is greater than the number of magnetic components. The container tray has multiple clearance holes on the bottom wall facing the magnetic stirring device. Each clearance hole corresponds to one of the magnetic components and is used to receive the magnetic components. At least two receiving holes are equally spaced around the circumference of each magnetic component.

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