Magnetic stirrer

Abstract

The utility model discloses a magnetic stirrer, which relates to the technical field of chemical experiment stirring, and comprises a bottle body, a bottle cap is detachably mounted on the bottle body, a lithium battery, a battery positioning mechanism, a PC circuit board and a driving motor are arranged in the bottle body, the lithium battery is positioned in the battery positioning mechanism, a speed regulation module and a charging module are arranged on the PCB circuit board, and the driving motor is connected with the speed regulation module. The bottle body is provided with a speed regulation knob, a switch and a Type-C charging groove, the output end of the speed regulation module is electrically connected with the input end of the driving motor, the control end of the switch is provided with a yellow wire, and the yellow wire is electrically connected with the PCB; according to the utility model, through the arrangement of the rotating disc, the magnetic pole, the speed regulation module, the charging module and other structures, the stirring requirements under different experiment scenes can be met, the external Type-C connector can be connected with the Type-C charging groove, an external power supply is not needed during use, and the device is simple in structure, low in cost, small in size and easy to carry and use.

Description

Technical Field

[0001] This utility model relates to the field of chemical experimental stirring technology, and in particular to a magnetic stirrer. Background Technology

[0002] In chemical experiments, various reactants need to be added to a container to react. In order to ensure that the substances in the solution react fully and prevent clumping, and to ensure that the substances in the solution are evenly distributed in the solution, so as to facilitate the experiment and the test of the solution, a magnetic stirrer is usually used to stir the solution.

[0003] Existing magnetic stirrers used in chemical experiments are bulky, expensive, difficult to carry around, and unusable without a power outlet, thus limiting their application. Therefore, a newer magnetic stirrer is needed to meet these needs. Utility Model Content

[0004] The purpose of this invention is to provide a magnetic stirrer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a magnetic stirrer, comprising a bottle body, a bottle cap detachably mounted on the bottle body, a lithium battery, a battery positioning mechanism, a PCB circuit board, and a drive motor disposed inside the bottle body, the lithium battery being located within the battery positioning mechanism, a speed control module and a charging module disposed on the PCB circuit board, a speed control knob, a switch, and a Type-C charging slot disposed on the bottle body, the output end of the speed control module being electrically connected to the input end of the drive motor, a turntable being fixedly mounted on the output end of the drive motor, magnetic poles being fixedly mounted on the turntable, a red wire being disposed at the output end of the lithium battery, the output end of the red wire being electrically connected to the PCB circuit board, a blue wire being disposed at the output end of the speed control knob, the blue wire being electrically connected to the input end of the speed control module, a yellow wire being disposed at the control end of the switch, the yellow wire being electrically connected to the PCB circuit board, a drive motor fixing mechanism being disposed on the bottle body and the drive motor, and a PCB circuit board snap-fit ​​fixing mechanism being disposed on the bottle body.

[0006] Preferably, the battery positioning mechanism includes a positioning sleeve fixedly installed inside the bottle, and an elastic compression block is fixedly installed on the positioning sleeve.

[0007] Preferably, the drive motor fixing mechanism includes a triangular fixing plate fixedly installed on the drive motor, a fixing block fixedly installed on the inner wall of the bottle, and screws screwed into the triangular fixing plate and the fixing block.

[0008] Preferably, the PCB circuit board clamping and fixing mechanism includes a compression spring fixedly installed on the inner wall of the bottle, and a retainer fixedly installed on the other end of the compression spring, the retainer clamping onto the PCB circuit board.

[0009] Preferably, a miniature guide telescopic rod is fixedly installed on the inner wall of the bottle, and the other end of the miniature guide telescopic rod is fixedly installed on the sleeve.

[0010] Preferably, the outer wall of the bottle body is provided with a threaded groove and a limiting ring, and the inner wall of the bottle cap is provided with an external threaded protrusion, wherein the threaded groove and the external threaded protrusion are adapted to each other.

[0011] The beneficial effects of this utility model are:

[0012] In this invention, the rotating disc drives the magnetic poles to rotate, and the magnetic poles, under the influence of magnetic force, drive the induced magnetic poles inside the container to rotate, thereby mixing the liquid in the container. Turning the speed control knob allows the speed of the drive motor to be adjusted under the action of the speed control module, which can adapt to the stirring needs of different experimental scenarios. The external Type-C connector can be connected to the Type-C charging slot, and the lithium battery can be charged under the action of the charging module. No external power supply is required during use. The device has a simple structure, resulting in low cost and small size, making it easy to carry and use.

[0013] In this invention, by setting up a PCB circuit board clamping and fixing mechanism, a drive motor fixing mechanism, etc., the screw holes on the triangular fixing plate are aligned with the screw slots on the fixing block, and the triangular fixing plate is fixed to the fixing block with screws to fix the drive motor in the bottle body. The outer periphery of the PCB circuit board is placed into the clamp, and the clamp will clamp and fix the PCB circuit board under the reaction force of the compression spring. When it is necessary to disassemble the PCB circuit board, the clamp can be directly moved to separate the clamp from the PCB circuit board, thereby releasing the fixation of the PCB circuit board and facilitating the disassembly, inspection, and replacement of the PCB circuit board. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a magnetic stirrer proposed in this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of a magnetic stirrer, including the turntable and magnetic poles, according to this utility model.

[0016] Figure 3 This is a schematic diagram of the triangular fixing plate, fixing block, and other structures of a magnetic stirrer proposed in this utility model.

[0017] Figure 4This is a schematic diagram of the structure of a magnetic stirrer with threaded grooves and external threaded protrusions proposed in this utility model.

[0018] In the diagram: 1. Bottle body; 2. Bottle cap; 3. Lithium battery; 4. Battery positioning mechanism; 41. Positioning sleeve; 42. Elastic compression block; 5. PCB circuit board; 6. Speed ​​control module; 7. Charging module; 8. Speed ​​control knob; 9. Switch; 10. Type-C charging slot; 11. Drive motor; 12. Turntable; 13. Magnetic pole; 14. Red wire; 15. Blue wire; 16. Yellow wire; 17. Drive motor fixing mechanism; 171. Triangular fixing plate; 172. Fixing block; 173. Screw; 18. PCB circuit board snap-fit ​​fixing mechanism; 181. Compression spring; 182. Sleeve; 183. Miniature guide telescopic rod; 19. Threaded groove; 20. External threaded protrusion. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Example:

[0021] like Figure 1-4 As shown, this embodiment provides a magnetic stirrer, including a bottle body 1, a bottle cap 2 detachably mounted on the bottle body 1, a lithium battery 3, a battery positioning mechanism 4, a PCB circuit board 5, and a drive motor 11 disposed inside the bottle body 1. The lithium battery 3 is located inside the battery positioning mechanism 4. The PCB circuit board 5 is provided with a speed control module 6 and a charging module 7. The bottle body 1 is provided with a speed control knob 8, a switch 9, and a Type-C charging slot 10. The output end of the speed control module 6 is electrically connected to the input end of the drive motor 11, and a turntable 1 is fixedly mounted on the output end of the drive motor 11. 2. A magnetic pole 13 is fixedly installed on the turntable 12. A red wire 14 is provided at the output end of the lithium battery 3. The output end of the red wire 14 is electrically connected to the PCB circuit board 5. A blue wire 15 is provided at the output end of the speed control knob 8. The blue wire 15 is electrically connected to the input end of the speed control module 6. A yellow wire 16 is provided at the control end of the switch 9. The yellow wire 16 is electrically connected to the PCB circuit board 5. A drive motor fixing mechanism 17 is provided on the bottle body 1 and the drive motor 11. A PCB circuit board snap-fit ​​fixing mechanism 18 is provided on the bottle body 1.

[0022] The lithium battery 3 is placed into the battery positioning mechanism 4 to fix the lithium battery 3, and the PCB circuit board 5 is fixed by the PCB circuit board snap-fit ​​fixing mechanism 18. Then, the speed control module 6 is connected to the speed control knob 8 through the blue wire 15, and the PCB circuit board 5 is connected to the switch 9 through the yellow wire 16. The charging module 7 and the Type eC charging slot 10 are electrically connected, and the drive motor 11 is fixed by the drive motor fixing mechanism 17. The drive motor 11 is then electrically connected to the speed control module 6. The bottle cap 2 is then screwed onto the bottle body 1 through the threaded groove 19 and the external threaded protrusion 20. The limiting ring 21 can limit the movement of the bottle cap 2. When it is necessary to stir and mix the solution, place the container on the cap 2 and start the drive motor 11 by switching on the switch 9. The rotation of the drive motor 11 will drive the turntable 12 to rotate, which in turn drives the magnetic pole 13 to rotate. Another induction magnetic pole adapted to the magnetic pole 13 is placed in the container beforehand. Under the action of magnetic force, the rotation of the magnetic pole 13 will drive the induction magnetic pole in the container to rotate. The rotation of the induction magnetic pole can stir the liquid in the container and thus mix the liquid. The speed of the drive motor 11 can be adjusted by turning the speed control knob 8 under the action of the speed control module 6 to adapt to the stirring needs of different experimental scenarios. The external Type-C connector can be connected to the Type-C charging slot 10, and the lithium battery 3 can be charged under the action of the charging module 7. No external power supply is required during use. The device has a simple structure, resulting in low cost and small size, making it easy to carry and use.

[0023] In this embodiment of the utility model, the battery positioning mechanism 4 further includes a positioning sleeve 41 fixedly installed inside the bottle body 1, and an elastic compression block 42 is fixedly installed on the positioning sleeve 41.

[0024] To facilitate the fixing and disassembly of the lithium battery 3, the lithium battery 3 is placed into the positioning sleeve 41. A set of elastic compression blocks 42 will press against both ends of the lithium battery 3 and fix the lithium battery 3. The lithium battery 3 can be directly removed from the positioning sleeve 41 to complete the disassembly of the lithium battery 3, which is convenient for the installation and removal of the lithium battery 3.

[0025] In this embodiment of the utility model, the drive motor fixing mechanism 17 further includes a triangular fixing plate 171 fixedly installed on the drive motor 11, a fixing block 172 fixedly installed on the inner wall of the bottle body 1, and screws 173 screwed into the triangular fixing plate 171 and the fixing block 172.

[0026] To fix the drive motor 11 inside the bottle body 1, align the screw holes on the triangular fixing plate 171 with the screw slots on the fixing block 172, and then fix the triangular fixing plate 171 onto the fixing block 172 with screws 173 to fix the drive motor 11 inside the bottle body 1.

[0027] In this embodiment of the utility model, the PCB circuit board snap-fit ​​fixing mechanism 18 further includes a compression spring 181 fixedly installed on the inner wall of the bottle body 1, and a retainer 182 fixedly installed on the other end of the compression spring 181, which snaps onto the PCB circuit board 5; a miniature guide telescopic rod 183 is fixedly installed on the inner wall of the bottle body 1, and the other end of the miniature guide telescopic rod 183 is fixedly installed on the retainer 182.

[0028] To facilitate the disassembly, inspection, and replacement of PCB circuit board 5, the outer periphery of PCB circuit board 5 is inserted into the retaining sleeve 182. At this time, the compression spring 181 is compressed, and the miniature guide telescopic rod 183 guides the retaining sleeve 182. Under the reaction force of the compression spring 181, the retaining sleeve 182 will drive the retaining sleeve 182 to lock and fix the PCB circuit board 5. When it is necessary to disassemble the PCB circuit board 5, simply move the retaining sleeve 182 to separate it from the PCB circuit board 5, thereby releasing the fixation of the PCB circuit board 5 and facilitating the disassembly, inspection, and replacement of the PCB circuit board 5.

[0029] In this embodiment of the utility model, the outer wall of the bottle body 1 is provided with a threaded groove 19 and a limiting ring 21, and the inner wall of the bottle cap 2 is provided with an external threaded protrusion 20, the threaded groove 19 and the external threaded protrusion 20 being compatible.

[0030] To facilitate the opening and closing of the bottle body 1, the bottle cap 2 is screwed onto the bottle body 1 through the threaded groove 19 and the external threaded protrusion 20. The limiting ring 21 can limit the movement of the bottle cap 2, thus closing the opening of the bottle body 1. The bottle cap 2 can be screwed out of the bottle body 1 through the threaded groove 19 and the external threaded protrusion 20, thus opening the bottle body 1.

[0031] Working principle: When in use, the lithium battery 3 is placed into the positioning sleeve 41. A set of elastic compression blocks 42 will press against both ends of the lithium battery 3 and fix the lithium battery 3. Then, the outer periphery of the PCB circuit board 5 is placed into the retaining sleeve 182. At this time, the compression spring 181 will be compressed. The miniature guide telescopic rod 183 can guide the retaining sleeve 182. Under the reaction force of the compression spring 181, the retaining sleeve 182 will drive the retaining sleeve 182 to clamp and fix the PCB circuit board 5. When it is necessary to disassemble the PCB circuit board 5, simply move the retaining sleeve 182 to separate the retaining sleeve 182 from the PCB circuit board 5, which can release the fixation of the PCB circuit board 5, making it convenient for the disassembly, inspection and replacement of the PCB circuit board 5. Next, connect the speed control module 6 to the speed control knob 8 via the blue wire 15, connect the PCB circuit board 5 to the switch 9 via the yellow wire 16, and electrically connect the charging module 7 and the Type-C charging slot 10. Then, align the screw holes on the triangular fixing plate 171 with the screw slots on the fixing block 172, and fix the triangular fixing plate 171 to the fixing block 172 with screws 173 to fix the drive motor 11 inside the bottle body 1. Then, electrically connect the drive motor 11 and the speed control module 6. Finally, screw the bottle cap 2 onto the bottle body 1 via the threaded groove 19 and the external threaded protrusion 20. The limiting ring 21 can limit the movement of the bottle cap 2. When it is necessary to stir and mix the solution, place the container on the cap 2 and start the drive motor 11 by switching on the switch 9. The rotation of the drive motor 11 will drive the turntable 12 to rotate, and the rotation of the turntable 12 will drive the magnetic pole 13 to rotate. Another induction magnetic pole that is compatible with the magnetic pole 13 is placed in the container in advance. Under the action of magnetic force, the rotation of the magnetic pole 13 will drive the induction magnetic pole in the container to rotate. The rotation of the induction magnetic pole can stir the liquid in the container and thus mix the liquid. The speed of the drive motor 11 can be adjusted by turning the speed control knob 8 under the action of the speed control module 6. It can adapt to the stirring needs of different experimental scenarios. The external Type-C connector can be connected to the Type-C charging slot 10, and the lithium battery 3 can be charged under the action of the charging module 7. No external power supply is required during use. The device has a simple structure, resulting in low cost and small size, making it easy to carry and use.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A magnetic stirrer comprising a bottle body (1) on which a bottle cap (2) is detachably mounted, characterized in that: The bottle body (1) is provided with a lithium battery (3), a battery positioning mechanism (4), a PCB circuit board (5) and a driving motor (11), the lithium battery (3) is located in the battery positioning mechanism (4), the PCB circuit board (5) is provided with a speed regulating module (6) and a charging module (7), the bottle body (1) is provided with a speed regulating knob (8), a switch (9) and a Type-C charging slot (10), the output end of the speed regulating module (6) and the input end of the driving motor (11) are electrically connected, the output end of the driving motor (11) is fixedly installed with a rotating disc (12), the rotating disc (12) is fixedly installed with a magnetic pole (13), the output end of the lithium battery (3) is provided with a red wire (14), the output end of the red wire (14) and the PCB circuit board (5) are electrically connected, the output end of the speed regulating knob (8) is provided with a blue wire (15), the blue wire (15) and the input end of the speed regulating module (6) are electrically connected, the control end of the switch (9) is provided with a yellow wire (16), the yellow wire (16) and the PCB circuit board (5) are electrically connected, the bottle body (1) and the driving motor (11) are provided with a driving motor fixing mechanism (17), and the bottle body (1) is provided with a PCB circuit board clamping fixing mechanism (18).

2. A magnetic stirrer according to claim 1, characterized in that: The battery positioning mechanism (4) comprises a positioning sleeve (41) fixedly installed in the bottle body (1), and the positioning sleeve (41) is fixedly installed with an elastic extrusion block (42).

3. A magnetic stirrer as claimed in claim 1, wherein: The driving motor fixing mechanism (17) comprises a triangular fixing plate (171) fixedly installed on the driving motor (11), the inner wall of the bottle body (1) is fixedly installed with a fixing block (172), and the triangular fixing plate (171) and the fixing block (172) are screwed with screws (173).

4. A magnetic stirrer as claimed in claim 1, wherein: The PCB circuit board clamping fixing mechanism (18) comprises a compression spring (181) fixedly installed on the inner wall of the bottle body (1), and the other end of the compression spring (181) is fixedly installed with a clamping sleeve (182), and the clamping sleeve (182) is clamped on the PCB circuit board (5).

5. A magnetic stirrer according to claim 4, wherein: The inner wall of the bottle body (1) is fixedly installed with a micro guide telescopic rod (183), and the other end of the micro guide telescopic rod (183) is fixedly installed on the clamping sleeve (182).

6. A magnetic stirrer as claimed in claim 1, wherein: The outer wall of the bottle body (1) is provided with a threaded groove (19) and a limiting ring (21), and the inner wall of the bottle cap (2) is provided with an external thread protrusion (20), and the threaded groove (19) and the external thread protrusion (20) are matched.

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