A magnetic stirring device

Abstract

This utility model discloses a magnetic stirring device, including a magnetic stirring unit, a heating unit, and a temperature measuring unit. The magnetic stirring unit includes a rotating magnetic field generator and a magnetic rotor. The rotating magnetic field generator generates a rotating magnetic field, and the magnetic rotor can be placed inside a cup and rotates under the action of the rotating magnetic field to perform a stirring function. The heating unit includes a heating plate, which is placed at the bottom of the cup to heat the cup. The temperature measuring unit includes a temperature probe and a bracket. The bracket is adjustable in height and is located above the cup. The bracket has an insertion part to accommodate the handle of the temperature probe, adapting to different liquid levels in the cup. This utility model has a reasonable structure, is easy to use, has good adaptability, and helps reduce operating costs.

Description

Technical Field

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

[0002] With the development of science and technology, the requirements for precise control of experimental and production processes are becoming increasingly stringent in scientific research fields such as chemistry, biology, and materials science, as well as in industrial production. For example, in chemical synthesis, precise control of reaction temperature is needed to improve yield and purity; in biological experiments, it is necessary to avoid mechanical stirring that could damage cells while ensuring stable solution temperature. Traditional stirring equipment has a simple temperature detection unit design, poor adaptability, often requires manual support, or has a complex structure and high cost. Utility Model Content

[0003] This utility model discloses a magnetic stirring device, which solves the technical problems of existing technologies where the detection unit has a simple structure with poor adaptability or a complex structure with high cost. It has the advantages of reasonable structure, convenient use, good adaptability, and reduced operating costs. The technical solution adopted is as follows:

[0004] A magnetic stirring device, comprising:

[0005] A magnetic stirring unit includes a rotating magnetic field generator and a magnetic rotor. The rotating magnetic field generator is used to generate a rotating magnetic field, and the magnetic rotor can be disposed in the cup body and rotate under the action of the rotating magnetic field to perform a stirring function.

[0006] A heating unit includes a heating plate, which is located at the bottom of the cup body for heating the cup body;

[0007] The temperature measuring unit includes a temperature probe and a bracket. The bracket is adjustable in height and is located above the cup body. The bracket is provided with an insertion part to accommodate the handle of the temperature probe, so as to adapt to different liquid levels in the cup body.

[0008] Based on the above technical solution, it also includes a base body and a support rod. The rotating magnetic field generator is embedded in the base body below the heating plate. Multiple support legs are arranged circumferentially at the bottom of the heating plate. The support rod is detachably connected to the base body. The first end of the bracket is vertically adjustable and connected to the support rod.

[0009] Based on the above technical solution, the upright is inserted downwards into the base body, and the support legs are made of high-temperature resistant ceramic material.

[0010] Based on the above technical solution, the first end of the bracket is connected to the upright in an adjustable manner through a connector. The connector includes a movable block, a first set screw, and a second set screw. The movable block includes a first through hole for accommodating the first end of the bracket and a second through hole for accommodating the upright. The first set screw can be screwed to the movable block and abuts against the first end of the bracket in the first through hole. The second set screw can be screwed to the movable block and abuts against the upright in the second through hole.

[0011] Based on the above technical solution, the top surface of the insertion part that abuts against the temperature probe handle part includes a conical surface, and the side edge of the insertion part includes a notch that communicates with the central insertion hole of the insertion part, so as to facilitate the insertion and removal of the temperature probe through the notch.

[0012] Based on the above technical solution, the conical surface where the insertion part abuts against the temperature probe handle part includes anti-slip protrusions.

[0013] Based on the above technical solution, the magnetic rotor includes a plastic outer shell and a ferromagnetic inner core. Preferably, the plastic outer shell is made of polytetrafluoroethylene (PTFE), and the ferromagnetic inner core is made of magnet.

[0014] Based on the above technical solution, a controller is also included. The controller is electrically connected to the magnetic stirring unit, the heating unit and the temperature measuring unit respectively. When the temperature measuring unit detects that the liquid temperature in the cup has reached the set temperature value, the temperature measuring unit can send a signal to the controller, and the controller controls the heating unit to turn on and off. The magnetic stirring unit is designed such that the speed of the magnetic rotor is adjustable.

[0015] Based on the above technical solution, it also includes a panel and a knob that are electrically connected to the control. The panel is used to display the real-time temperature of the liquid in the cup, and the knob is used to adjust the rotation speed of the magnetic rotor.

[0016] Based on the above technical solution, multiple magnetic stirring devices are arranged in parallel.

[0017] Beneficial effects

[0018] This utility model has a reasonable structure. In the temperature measuring unit, the bracket is vertically movable above the cup body and has an insertion part for accommodating the temperature probe. This not only conveniently supports the temperature probe but also allows the height of the bracket to be adjusted according to the liquid level in the cup, ensuring that the tip of the temperature probe is always close to the center of the liquid, thus improving temperature measurement accuracy. The insertion part includes a conical surface, which effectively guides the handle of the temperature probe, ensuring it remains in a good position after insertion and simplifying user operation. Furthermore, the insertion part has a notch for easy side-mounting and placement of the temperature probe, further facilitating user operation. Additionally, the anti-slip protrusions on the conical surface of the insertion part provide good stability for the temperature probe after placement.

[0019] In this invention, the heating unit includes a heating plate, which works in conjunction with the temperature measuring unit to stir within a set temperature range, facilitating precise control of the stirring process. Furthermore, the magnetic stirring unit features an adjustable magnetic rotor speed, further enhancing the precise control of the stirring process. Attached Figure Description

[0020] 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 one embodiment of this utility model. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0021] Figure 1 Schematic diagram of the three-dimensional structure of this utility model Figure 1 ;

[0022] Figure 2 Schematic diagram of the three-dimensional structure of this utility model Figure 2 ;

[0023] Figure 3 Schematic diagram of the three-dimensional structure of this utility model Figure 3 ;

[0024] Figure 4 : A three-dimensional structural diagram of the temperature measuring unit after the temperature probe has been removed in this utility model; Detailed Implementation

[0025] The following description and accompanying drawings fully illustrate specific embodiments described herein to enable those skilled in the art to practice them. Some embodiments may include or substitute parts and features of other embodiments. The scope of the embodiments herein encompasses the entire scope of the claims and all available equivalents thereof. Throughout this document, the terms “first,” “second,” etc., are used only to distinguish one element from another without requiring or implying any actual relationship or order between the elements. Indeed, a first element can also be referred to as a second element, and vice versa. Furthermore, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a structure, apparatus, or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a structure, apparatus, or device. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the structure, apparatus, or device that includes said element. The various embodiments described herein are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments; similar or identical parts between embodiments can be referred to interchangeably.

[0026] The terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used in this document to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are used solely for the convenience of describing the document and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description herein, unless otherwise specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two elements; they can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0027] In this document, unless otherwise stated, the term "multiple" means two or more.

[0028] In this article, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0029] In this article, the term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0030] like Figures 1-4The magnetic stirring device shown includes a magnetic stirring unit 2, a heating unit 3, a temperature measuring unit 4, and a support rod 5 for the base body.

[0031] The base body includes a shell 1, and the bottom of the base body includes several columns for easy placement;

[0032] The magnetic stirring unit 2 includes a rotating magnetic field generator 21 and a magnetic rotor 22. The rotating magnetic field generator generates a rotating magnetic field, and the magnetic rotor 22 can be disposed inside the cup and rotates under the action of the rotating magnetic field to perform a stirring function. The magnetic field generator 21 and the magnetic rotor 22 are existing technologies, and those skilled in the art can select them according to their needs; further details are omitted here. Figure 2 As shown, the top surface of the housing 1 of the base body has an opening, and the rotating magnetic field generator 21 is embedded in the opening.

[0033] In this embodiment, the magnetic rotor 22 includes a polyvinyl fluoride outer shell and a magnetic steel inner core. This not only provides good high temperature resistance, wear resistance, and corrosion resistance, but also has good magnetic properties, which can precisely and stably stir the liquid in the cup and avoid contaminating the sample.

[0034] Heating unit 3 includes a heating plate 31, which is located at the bottom of the cup body for heating the cup body. In this embodiment, the bottom of the heating plate 31 has multiple support legs 32 arranged circumferentially. The support legs 32 are made of high-temperature resistant ceramic material, such as... Figure 2 As shown, the heating plate 31 is mounted above the rotating magnetic field generator 21. The way the heating part on the heating plate 31 is spaced apart from the rotating magnetic field generator avoids the rotating magnetic field generator 21 being affected by high temperature, which helps to improve the service life of the rotating magnetic field generator 21. In this embodiment, the heating plate 31 adopts PTC (positive temperature coefficient) or PID (proportional-integral-derivative) control technology, which can accurately adjust the heating power and achieve rapid temperature response and stable control.

[0035] Temperature measuring unit 4 includes temperature probe 41 and bracket 42, such as Figure 3 and 4 As shown, the upright 5 is inserted downwards into the insertion hole on the back plate of the housing 1, making it easy to put on and take off. The bracket 42 is located above the cup body, and the first end of the bracket 42 is adjustable in height and connected to the upright 5. Specifically, the first end of the bracket 42 is connected to the upright 5 in an adjustable height position through a connector 43. The connector 43 includes a movable block 431, a first set screw 432, and a second set screw 433. The movable block 431 includes a first through hole for accommodating the first end of the bracket 42 and a second through hole for accommodating the upright 5. The first set screw 432 can be screwed to the movable block 431 and abuts against the first end of the bracket 42 in the first through hole to fix the movable block 431 and the bracket 42. The second set screw 433 can be screwed to the movable block 431 and abuts against the upright 5 in the second through hole to fix the movable block 431 and the upright 5.

[0036] like Figure 4 As shown, the second end of the bracket 42 is provided with an insertion part 44 for accommodating the handle of the temperature probe 41. Thus, when the height of the bracket 42 is adjusted up and down, the height of the temperature probe 41 can also be adjusted, making it easy to adapt to different liquid levels in the cup. By adjusting the position, the end of the temperature probe 41 is always positioned close to the center of the liquid in the cup, which helps improve temperature measurement accuracy. Furthermore, it is easy to adapt to temperature probes of different specifications, offering good flexibility in use.

[0037] In this embodiment, the temperature probe is a thermocouple with a measurement accuracy of 0.1℃, which is beneficial for precise temperature control.

[0038] like Figure 4 As shown, the top surface of the insertion part 44 that abuts against the handle part of the temperature probe 41 includes a conical surface, and the lower part of the handle part of the temperature probe 41 includes a second conical surface that is adapted to the conical surface. Thus, when the temperature probe 41 is placed, the conical surface can play a guiding role, so that the temperature probe 41 can maintain a good position after being inserted.

[0039] like Figure 4 As shown, the side edge of the insertion part 44 includes a notch communicating with the central insertion hole of the insertion part 44, so as to facilitate the insertion and removal of the temperature probe 41 through the notch. In addition, the conical surface of the insertion part 44 that abuts against the handle of the temperature probe 41 includes anti-slip protrusions, so that the temperature probe 41 has good stability after placement.

[0040] The system also includes a controller, which is electrically connected to the magnetic stirring unit 2, the heating unit 3, and the temperature measuring unit 4. In this embodiment, when the temperature measuring unit 4 detects that the liquid temperature in the cup has reached the set temperature range, the temperature measuring unit 4 sends a signal to the controller, which then controls the heating unit 3 to turn off. After a period of time, when the temperature measuring unit 4 detects that the liquid temperature in the cup is lower than the set temperature range, the temperature measuring unit 4 sends a signal to the controller again, which then controls the heating unit 3 to turn on. This ensures that stirring is performed under relatively constant temperature conditions, which is beneficial for precise control of the stirring process. In addition, the magnetic stirring unit 2 is designed with an adjustable magnetic rotor speed. In this embodiment, the magnetic rotor 22 is infinitely adjustable, allowing for flexible adjustment of the stirring speed according to experimental needs to achieve the best mixing, reaction, or dispersion effect.

[0041] In addition, it includes a panel 6 and a knob 7 that are electrically connected to the control. The panel 6 and the knob 7 are embedded in the inclined side wall of the housing 1. The panel is used to display the real-time temperature of the liquid in the cup, and the knob 7 is used to adjust the rotation speed of the magnetic rotor 22, making it easy to operate.

[0042] The magnetic stirring device is arranged in parallel with multiple units sharing a single body. This allows for precise temperature control and stirring of multiple different samples or reaction systems, enabling simultaneous experiments with different temperature or stirring speed requirements, thus improving experimental efficiency and facilitating comparative experiments.

[0043] The present invention has been described above by way of example, but the present invention is not limited to the specific embodiments described above. Any modifications or variations made based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A magnetic stirring device, characterized by include: The magnetic stirring unit (2) includes a rotating magnetic field generator (21) and a magnetic rotor (22). The rotating magnetic field generator (21) is used to generate a rotating magnetic field, and the magnetic rotor (22) can be placed in the cup body and rotate under the action of the rotating magnetic field to play a stirring role. The heating unit (3) includes a heating plate (31), which is located at the bottom of the cup body for heating the cup body; The temperature measuring unit (4) includes a temperature probe (41) and a bracket (42). The bracket (42) is positioned above the cup body in an adjustable manner, and the bracket (42) is provided with an insertion part (44) for accommodating the handle of the temperature probe (41) to accommodate different liquid levels in the cup body.

2. The magnetic stirring device according to claim 1, characterized in that, It also includes a seat body and a support rod (5). The rotating magnetic field generator (21) is embedded in the seat body below the heating plate (31). The heating plate (31) has multiple legs (32) arranged circumferentially at the bottom. The support rod (5) is detachably connected to the seat body. The first end of the bracket (42) is connected to the support rod (5) in an adjustable position.

3. The magnetic stirring device according to claim 2, characterized in that, The upright (5) is inserted downwards into the base body, and the support leg (32) is made of high-temperature resistant ceramic material.

4. The magnetic stirring device according to claim 3, characterized in that, The first end of the bracket (42) is connected to the upright (5) in an adjustable manner via a connector (43). The connector (43) includes a movable block (431), a first set screw (432), and a second set screw (433). The movable block (431) includes a first through hole for accommodating the first end of the bracket (42) and a second through hole for accommodating the upright (5). The first set screw (432) can be screwed to the movable block (431) and abuts against the first end of the bracket (42) in the first through hole. The second set screw (433) can be screwed to the movable block (431) and abuts against the upright (5) in the second through hole.

5. The magnetic stirring device according to claim 1, characterized in that, The top surface of the insertion part (44) that abuts against the handle of the temperature probe (41) includes a conical surface, and the side edge of the insertion part (44) includes a notch that communicates with the central insertion hole of the insertion part (44) to facilitate the insertion and removal of the temperature probe (41) through the notch.

6. The magnetic stirring device according to claim 5, characterized in that, The conical surface of the insertion part (44) that abuts against the handle of the temperature probe (41) includes anti-slip protrusions.

7. The magnetic stirring device according to claim 1, characterized in that, The magnetic rotor (22) includes a plastic outer shell and a ferromagnetic inner core.

8. The magnetic stirring apparatus according to any one of claims 1 to 7, characterized in that, It also includes a controller, which is electrically connected to the magnetic stirring unit (2), the heating unit (3) and the temperature measuring unit (4) respectively. When the temperature measuring unit (4) detects that the liquid temperature in the cup has reached the set temperature value, the temperature measuring unit (4) can send a signal to the controller, and the controller controls the heating unit (3) to turn on and off. The magnetic stirring unit (2) is designed such that the speed of the magnetic rotor (22) is adjustable.

9. The magnetic stirring device according to claim 8, characterized in that, It also includes a panel (6) and a knob (7) electrically connected to the control, the panel (6) for displaying the real-time temperature of the liquid in the cup, and the knob (7) for adjusting the rotation speed of the magnetic rotor (22).

10. The magnetic stirring device according to claim 8, characterized in that, Multiple magnetic stirring devices are arranged in parallel.

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