Magnetic coupling speed reduction stirrer
By designing a magnetically coupled speed-reducing agitator, the problem of easy wear of mechanical seals in traditional agitators is solved, achieving a highly efficient and leak-free mixing process, thus improving production efficiency and mixing quality.
Patent Information
- Application Number
- CN202520195231.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-02-08
AI Technical Summary
The mechanical seals of traditional mixers are prone to wear, leading to high maintenance costs and equipment downtime, which affects production efficiency.
A magnetically coupled speed reducer is used, which avoids mechanical seals by using magnetic coupling to drive the stirring device. The rotation of the stirring shaft is achieved by magnetic coupling, and the motor parameters can be adjusted to adapt to different stirring tasks and material characteristics.
It achieves a highly efficient mixing process, eliminates the risk of leakage, reduces maintenance costs, improves production efficiency and mixing quality, adapts to different container sizes, and allows for flexible adjustment of mixing parameters.
Smart Images
Figure CN223861757U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of stirrers, and in particular to a magnetically coupled decelerated stirrer. Background Technology
[0002] An agitator is a device used for mixing and stirring substances. Structurally, it typically consists of an agitator, a stirring shaft, a motor, and a container. The agitator is the component that directly contacts the substance being stirred. Agitators come in various shapes, commonly including paddle, anchor, turbine, and spiral types. Different shapes of agitators are suitable for different stirring tasks. For example, paddle agitators have a simple structure and are suitable for mixing low-viscosity liquids; spiral agitators are better for stirring high-viscosity fluids. The stirring shaft connects the agitator and the motor. The motor provides power for the rotation of the stirring shaft, enabling the agitator to rotate at high speed within the container, thereby driving the liquid, solid particles, or a mixture of liquid and solid. The working principle of an agitator is mainly based on the rotation of the agitator, which applies shear force, convection, and diffusion to the material. During the stirring process, the agitator pushes the material in a circular motion, causing convection and allowing the material at different locations to come into contact and mix. Simultaneously, the edges of the agitator and the material... Friction between particles generates shear force, which can disperse agglomerated solid particles or better mix different phases of liquid. For processes requiring heat transfer, stirring can also accelerate heat transfer, making the material temperature more uniform. Stirring has a wide range of applications. In the chemical industry, it is used for mixing materials in various chemical reactions. For example, in the production of synthetic agitators, different chemical raw materials are thoroughly mixed to ensure that the reaction proceeds uniformly. In the food industry, it is used to make beverages, jams, and other products. When making juice, the stirrer can thoroughly mix fruit pulp and juice to make the taste more uniform. In the construction industry, it is used for mixing building materials such as concrete to ensure that cement, sand, and other components are mixed evenly and to guarantee the quality of building materials. In the pharmaceutical field, it is also used in many processes such as mixing drug components. In order to improve its sealing performance and reduce equipment maintenance costs, a magnetically coupled decelerating stirrer is particularly needed.
[0003] However, the mechanical seals of traditional mixers are prone to wear and require regular replacement. This not only increases maintenance costs, but also causes equipment downtime during the seal replacement process, affecting production efficiency. Utility Model Content
[0004] The purpose of this invention is to provide a magnetically coupled decelerating stirrer to solve the problem mentioned in the background art of the existing magnetically coupled decelerating stirrer, which has a mechanical seal that is prone to wear and needs to be replaced regularly. This not only increases maintenance costs, but also causes equipment downtime and affects production efficiency during the replacement process.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a magnetically coupled decelerating stirrer, comprising a main body, a display screen on the surface of the main body, control keys on the surface of the main body, a bottom pad installed at the bottom of the main body, a limiting seat fixedly connected to the top of the main body, and stirring devices on the surfaces of both the main body and the limiting seat;
[0006] The stirring device includes a container bottle, a fixed base, a stirring shaft, a stirring paddle, an inner magnet, a bracket, a lifting groove, a first motor, a screw, a lifting block, a fixed plate, a transmission groove, a second motor, a rotating shaft, a driving wheel, a driven wheel, a transmission shaft, and an outer magnet. The container bottle is placed inside the limiting base. The fixed base is fixedly connected to the bottom of the container bottle. The stirring shaft is rotatably connected to the top of the fixed base. The stirring paddle is fixedly connected to the outer wall surface of the stirring shaft. The inner magnet is fixedly connected to the top of the stirring shaft. A bracket is fixedly connected to the rear side of the main body. The surface of the bracket has a lifting mechanism. The lifting groove has a first motor fixedly connected to its bottom interior. A screw is fixedly connected to the output end of the first motor. A lifting block is threaded onto the outer wall surface of the screw. A fixing plate is fixedly connected to the outer side of the lifting block. A transmission groove is formed inside the fixing plate. A second motor is fixedly connected to the top of the fixing plate. A rotating shaft is fixedly connected to the output end of the second motor. A drive wheel is fixedly connected to one end of the rotating shaft. A driven wheel meshes with one side of the drive wheel. A transmission shaft is fixedly connected to the bottom of the driven wheel. An external magnet is fixedly connected to the bottom surface of the transmission shaft.
[0007] Preferably, the bottom pads are provided in four identical sets at the bottom of the main body, and are symmetrically distributed at the four corners of the main body with respect to the central axis of the main body.
[0008] Preferably, the position of the container bottle corresponds to the position of the limiting seat, and the outer wall size of the container bottle matches the inner wall size of the limiting seat.
[0009] Preferably, the stirring paddles are arranged in multiple sets on the surface of the stirring shaft, and are distributed in a circular pattern with equal spacing around the center of the stirring shaft.
[0010] Preferably, the screw drives the lifting block to slide up and down in the lifting groove via a first motor, and the outer wall size of the lifting block matches the inner wall size of the lifting groove.
[0011] Preferably, the rotating shaft is configured to rotate in conjunction with the driving wheel via a second motor, and the driven wheel drives the transmission shaft and the external magnet to rotate together via the driving wheel.
[0012] Preferably, the diameter of the driving wheel is smaller than the diameter of the driven wheel, and the number of teeth on the driven wheel is greater than the number of teeth on the driving wheel.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This magnetic coupling deceleration stirrer, through the setting of the stirring device, allows the operator to first input commands through the control keys on the main body surface. These commands are transmitted to the control system inside the equipment, and at the same time, relevant operation information is displayed on the screen, facilitating real-time monitoring by the operator. At this time, if it is necessary to adjust the height of the stirring device to adapt to containers of different sizes, the first motor will start. After the first motor is powered on, its output end drives the screw to start rotating. Since the lifting block is threadedly connected to the screw, under the action of the screw rotation, the lifting block makes a smooth up-and-down linear motion along the lifting groove. The lifting groove provides precise guidance for the movement of the lifting block, ensuring its stable movement trajectory and avoiding shaking or deviation. The movement of the lifting block drives the outer fixing plate, thereby adjusting the height of the entire transmission assembly to match the position of the container. When the transmission assembly is adjusted to the appropriate position, the second motor starts. The output end of the second motor drives the rotating shaft to rotate at high speed, and the drive wheel at one end of the rotating shaft rotates synchronously. Since the drive wheel and Driven wheels mesh with each other, and the rotational force of the driving wheel is transmitted to the driven wheels, causing the driven wheels to drive the transmission shaft at the bottom to rotate. The external magnet fixedly connected to the bottom of the transmission shaft rotates at high speed under the drive of the transmission shaft. The external magnet and the internal magnet above the stirring shaft are magnetically coupled. The rotating magnetic field of the external magnet drives the internal magnet to rotate synchronously. Since the internal magnet is fixed on the stirring shaft, the stirring shaft also starts to rotate. The stirring paddle fixed to the outer wall of the stirring shaft rotates at high speed in the material in the container under the drive of the stirring shaft. The stirring paddle, through its own shape and the shearing force and convection generated by its rotation, fully mixes and stirs the material in the container, achieving a highly efficient stirring process. During the entire stirring process, the operator can adjust the operating parameters of the first and second motors at any time according to actual needs through the control keys to adapt to different stirring tasks and material characteristics. In this process, a sealed container can be used. Compared with traditional stirrers, the stirring device uses magnetic coupling transmission and has no mechanical seal components, which completely isolates the material inside the container from the outside world and eliminates the risk of leakage. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the left side view of the appearance of this utility model;
[0015] Figure 2 This is a schematic diagram of the right side view of the appearance of this utility model;
[0016] Figure 3 This is a schematic diagram of the stirring device of this utility model;
[0017] Figure 4 This is a schematic diagram of the structure of the first motor and screw of this utility model.
[0018] In the diagram: 1. Main body; 2. Display screen; 3. Control keys; 4. Base pad; 5. Limiting seat; 6. Stirring device; 601. Container bottle; 602. Fixed seat; 603. Stirring shaft; 604. Stirring paddle; 605. Inner magnet; 606. Support; 607. Lifting groove; 608. First motor; 609. Screw; 610. Lifting block; 611. Fixed plate; 612. Transmission groove; 613. Second motor; 614. Rotating shaft; 615. Driving wheel; 616. Driven wheel; 617. Transmission shaft; 618. Outer magnet. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Please see Figure 1-4 This utility model provides a technical solution: a magnetic coupling deceleration stirrer, including a main body 1, a display screen 2 on the surface of the main body 1, control keys 3 on the surface of the main body 1, a bottom pad 4 installed at the bottom of the main body 1, a limiting seat 5 fixedly connected to the top of the main body 1, and a stirring device 6 on the surface of both the main body 1 and the limiting seat 5.
[0021] The stirring device 6 includes a container bottle 601, a fixed base 602, a stirring shaft 603, a stirring paddle 604, an inner magnet 605, a bracket 606, a lifting groove 607, a first motor 608, a screw 609, a lifting block 610, a fixed plate 611, a transmission groove 612, a second motor 613, a rotating shaft 614, a driving wheel 615, a driven wheel 616, a transmission shaft 617, and an outer magnet 618. The container bottle 601 is placed inside the limiting seat 5. The fixed base 602 is fixedly connected to the bottom of the container bottle 601. The stirring shaft 603 is rotatably connected to the top of the fixed base 602. The stirring paddle 604 is fixedly connected to the outer wall surface of the stirring shaft 603. The inner magnet 605 is fixedly connected to the top of the stirring shaft 603. The rear side of the main body 1 is fixedly connected to... A bracket 606 is provided, and a lifting groove 607 is formed on the surface of the bracket 606. A first motor 608 is fixedly connected to the bottom of the lifting groove 607. A screw 609 is fixedly connected to the output end of the first motor 608. A lifting block 610 is threaded onto the outer wall surface of the screw 609. A fixing plate 611 is fixedly connected to the outer side of the lifting block 610. A transmission groove 612 is formed inside the fixing plate 611. A second motor 613 is fixedly connected to the top of the fixing plate 611. A rotating shaft 614 is fixedly connected to the output end of the second motor 613. A driving wheel 615 is fixedly connected to one end of the rotating shaft 614. A driven wheel 616 meshes with one side of the driving wheel 615. A transmission shaft 617 is fixedly connected to the bottom of the driven wheel 616. An external magnet 618 is fixedly connected to the bottom surface. Through the setup of the stirring device 6, the operator first inputs commands via the control keys 3 on the surface of the main body 1. These commands are transmitted to the internal control system of the equipment, and relevant operating information is displayed on the screen 2 for real-time monitoring. If the height of the stirring device 6 needs to be adjusted to accommodate containers 601 of different sizes, the first motor 608 will start. After the first motor 608 is powered on, its output end drives the screw 609 to rotate. Since the lifting block 610 is threadedly connected to the screw 609, under the rotation of the screw 609, the lifting block 610 moves smoothly up and down along the lifting groove 607. The lifting groove 607 provides precise positioning for the movement of the lifting block 610. The guide ensures stable movement trajectory, preventing wobbling or deviation. The movement of the lifting block 610 drives the outer fixing plate 611, thereby adjusting the height of the entire transmission assembly to match the position of the container bottle 601. Once the transmission assembly is adjusted to the appropriate position, the second motor 613 starts. The output end of the second motor 613 drives the rotating shaft 614 to rotate at high speed. The driving wheel 615 at one end of the rotating shaft 614 rotates synchronously. Since the driving wheel 615 and the driven wheel 616 mesh with each other, the rotational force of the driving wheel 615 is transmitted to the driven wheel 616, causing the driven wheel 616 to drive the bottom transmission shaft 617 to start rotating. The external magnet 618, fixedly connected to the bottom of the transmission shaft 617, rotates at high speed under the drive of the transmission shaft 617.The outer magnet 618 and the inner magnet 605 above the stirring shaft 603 are magnetically coupled. The rotating magnetic field of the outer magnet 618 drives the inner magnet 605 to rotate synchronously. Since the inner magnet 605 is fixed on the stirring shaft 603, the stirring shaft 603 also begins to rotate. The stirring paddle 604, fixed to the outer wall of the stirring shaft 603, rotates at high speed in the material inside the container 601 under the drive of the stirring shaft 603. The stirring paddle 604, through its shape and the shearing force and convection generated by its rotation, thoroughly mixes and stirs the material inside the container 601, achieving a highly efficient stirring process. During the entire stirring process, the operator can adjust the operating parameters of the first motor 608 and the second motor 613 at any time according to actual needs using the control key 3 to adapt to different stirring tasks and material characteristics. In this process, a sealed container 601 can be used. Compared with traditional stirrers, the stirring device 6 uses magnetic coupling transmission and has no mechanical seal components, which completely isolates the material inside the container 601 from the outside, eliminating the risk of leakage.
[0022] Furthermore, four identical sets of bottom pads 4 are provided at the bottom of the main body 1, and are symmetrically distributed at the four corners of the main body 1 along the central axis of the main body 1. The bottom pads 4 greatly enhance the overall stability of the agitator. When the agitator 6 is running, it will generate a certain amount of vibration and force. The four symmetrically distributed bottom pads 4 can evenly distribute these forces, preventing the main body 1 from shaking or shifting due to uneven force, ensuring that the agitation process is carried out smoothly, and avoiding the impact of equipment shaking on the agitation effect and the uniformity of material mixing. At the same time, the bottom pads 4 can also play a certain role in shock absorption and sound insulation, reducing the impact of noise and vibration generated during equipment operation on the surrounding environment.
[0023] Furthermore, the position of the container bottle 601 corresponds to the position of the limiting seat 5, and the outer wall size of the container bottle 601 matches the inner wall size of the limiting seat 5. The limiting seat 5 provides precise positioning and stable support for the container bottle 601. The close fit ensures that the container bottle 601 can be stably placed in the limiting seat 5, preventing displacement or shaking during the stirring process. This ensures that the stirring shaft 603 and the central axis of the container bottle 601 remain aligned, allowing the stirring paddle 604 to stir the material evenly and efficiently within the container bottle 601, improving the stirring quality and efficiency. In addition, the limiting seat 5 can also protect the container bottle 601 to a certain extent, preventing it from being damaged by external impacts.
[0024] Furthermore, multiple sets of stirring paddles 604 are arranged on the surface of the stirring shaft 603, and are distributed at equal intervals around the center of the stirring shaft 603. The arrangement of stirring paddles 604 significantly improves the uniformity and efficiency of material mixing. Driven by the stirring shaft 603, the multiple sets of surrounding stirring paddles 604 can simultaneously apply forces to the material from multiple directions, generating strong convection and shear forces. The stirring paddles 604 at different positions work together to form a complex and orderly flow pattern of the material in the container bottle 601, accelerating the mixing of the material and ensuring that various components are fully mixed. Whether it is a low-viscosity liquid or a mixture containing solid particles, efficient and uniform mixing can be achieved.
[0025] Furthermore, the screw 609 drives the lifting block 610 to slide up and down within the lifting groove 607 via the first motor 608. The outer wall size of the lifting block 610 matches the inner wall size of the lifting groove 607. Through the setting of the lifting groove 607 and the lifting block 610, the height of the stirring device can be precisely adjusted. The close cooperation allows the lifting block 610 to move smoothly and accurately up and down along the lifting groove 607 under the drive of the screw 609, avoiding shaking or jamming caused by excessive gaps. This feature allows the stirrer to easily adapt to containers 601 of different heights, meeting diverse stirring needs. The operator can flexibly adjust the position of the stirring device by controlling the first motor 608 according to the actual situation, ensuring that the outer magnet 618 and the inner magnet 605 always maintain the best magnetic coupling state, improving the stirring effect.
[0026] Furthermore, the rotating shaft 614, through the cooperation of the second motor 613 and the driving wheel 615, forms a rotating structure. The driven wheel 616 drives the transmission shaft 617 and the external magnet 618 to rotate together through the driving wheel 615. The second motor 613 provides a stable and adjustable power source for the entire stirring device. The second motor 613 can precisely adjust the speed and torque according to the instructions input by the operator on the control key 3, thereby flexibly controlling the rotation speed and force of the driving wheel 615. This allows the stirrer to adjust the stirring speed according to the characteristics of different materials and the requirements of the stirring process, achieving efficient stirring. Whether it is necessary to stir quickly to accelerate mixing or to stir at low speed to prevent excessive shearing of materials, the second motor 613 can provide stable and reliable power support.
[0027] Furthermore, the diameter of the driving wheel 615 is smaller than that of the driven wheel 616, and the number of teeth on the driven wheel 616 is greater than that on the driving wheel 615. Through the arrangement of the driving wheel 615 and the driven wheel 616, the effect of speed reduction and torque increase is achieved. When the driving wheel 615 rotates at high speed under the drive of the second motor 613, due to its smaller diameter and fewer teeth, after meshing with the driven wheel 616, which has a larger diameter and more teeth, the rotational speed of the driven wheel 616 will decrease, while the torque will increase accordingly. This characteristic allows the drive shaft 617 and the external magnet 618 to rotate at a lower speed and a larger torque, providing stronger power for the stirring process. When stirring high-viscosity materials or requiring a larger stirring force, this speed reduction and torque increase design can ensure that the stirring shaft 603 and the stirring paddle 604 work stably and efficiently, improving the applicability and stirring effect of the stirrer.
[0028] Working Principle: Before the mixing task begins, the operator sets a series of parameters on the control key 3 of the main body 1 according to the material characteristics, mixing requirements, and the specifications of the selected container 601. These parameters cover key information such as mixing time, mixing speed, and the initial height of the mixing device 6. After setting, the command is immediately transmitted to the equipment's control system, and the display screen 2 displays the set values in real time for the operator to confirm. If the height of the container 601 used for this mixing is different from the previous one, the control system will drive the first motor 608 to start. The output shaft of the first motor 608 drives the screw 609 to rotate, causing the lifting block 610 to move precisely within the lifting groove 607. During this process... The lifting groove 607 provides a stable guide for the lifting block 610, ensuring its smooth rise or fall. This drives the fixed plate 611 and the entire transmission assembly to adjust to a suitable height, achieving the optimal coupling distance between the outer magnet 618 and the inner magnet 605. When the height is adjusted to the correct position, the second motor 613 starts, and its output power is transmitted to the driving wheel 615 through the rotating shaft 614. Due to the difference in diameter and number of teeth between the driving wheel 615 and the driven wheel 616, the driven wheel 616 drives the transmission shaft 617 at a lower speed and a higher torque, thereby driving the outer magnet 618 to rotate. The rotating magnetic field of the outer magnet 618 passes through the wall of the container bottle 601 and generates magnetic coupling with the inner magnet 605, driving the stirring shaft 603 to rotate at high speed and stir. Shaft 603 drives multiple sets of surrounding agitators 604 to rotate at high speed within the material in container 601. The agitators 604 at different positions work synergistically to apply complex shear forces and convection to the material. For low-viscosity liquids, the agitators 604 quickly break up any potential concentration gradients, accelerating molecular diffusion and achieving rapid and uniform mixing. For mixtures containing solid particles, the rotation of the agitators 604 not only creates turbulence in the liquid, suspending the solid particles, but also disperses agglomerated particles through shear forces, ensuring uniform mixing. During the mixing process, the control system monitors parameters such as mixing time and speed in real time. If the material characteristics are complex, the operator can adjust the first motor 6 at any time via control key 3. The operating status of the first motor 608 and the second motor 613 is as follows: For example, in the initial stage of mixing, the mixing speed can be increased to quickly disperse the materials. When the mixing is nearing completion, the speed is reduced to avoid over-mixing and damage to the material structure. After mixing is completed, the second motor 613 stops running, and the mixing shaft 603 and the mixing paddle 604 also stop rotating. If it is necessary to replace the container bottle 601, the first motor 608 can be restarted to raise the mixing device 6 for easy replacement. This achieves efficient, precise, and flexible operation of the entire mixing process. The model of the first motor 608 is Y315S-2, and the model of the second motor 613 is Y315S-2. This completes the use of a magnetically coupled decelerated mixer.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A magnetically coupled decelerating stirrer, comprising a main body (1), characterized in that: The surface of the main body (1) is provided with a display screen (2), the surface of the main body (1) is provided with control keys (3), the bottom of the main body (1) is provided with a bottom pad (4), the upper part of the main body (1) is fixedly connected with a limiting seat (5), and the surfaces of the main body (1) and the limiting seat (5) are both provided with stirring devices (6). The stirring device (6) includes a container bottle (601), a fixed base (602), a stirring shaft (603), a stirring paddle (604), an inner magnet (605), a bracket (606), a lifting groove (607), a first motor (608), a screw (609), a lifting block (610), a fixed plate (611), a transmission groove (612), a second motor (613), a rotating shaft (614), a driving wheel (615), a driven wheel (616), a transmission shaft (617), and... An outer magnet (618) is placed inside the limiting seat (5), a container bottle (601) is placed inside the container bottle (601), a fixed base (602) is fixedly connected to the bottom inside the container bottle (601), a stirring shaft (603) is rotatably connected above the fixed base (602), a stirring paddle (604) is fixedly connected to the outer wall surface of the stirring shaft (603), an inner magnet (605) is fixedly connected above the stirring shaft (603), and a bracket (606) is fixedly connected to the rear side of the main body (1). The support (606) has a lifting groove (607) on its surface. A first motor (608) is fixedly connected to the bottom of the lifting groove (607). A screw (609) is fixedly connected to the output end of the first motor (608). A lifting block (610) is threadedly connected to the outer wall surface of the screw (609). A fixing plate (611) is fixedly connected to the outer side of the lifting block (610). A transmission groove (612) is formed inside the fixing plate (611). A second motor (613) is fixedly connected above the fixed plate (611). A rotating shaft (614) is fixedly connected to the output end of the second motor (613). A driving wheel (615) is fixedly connected to one end of the rotating shaft (614). A driven wheel (616) is engaged on one side of the driving wheel (615). A transmission shaft (617) is fixedly connected to the bottom of the driven wheel (616). An external magnet (618) is fixedly connected to the bottom surface of the transmission shaft (617).
2. The magnetically coupled decelerated stirrer according to claim 1, characterized in that: The bottom pad (4) is provided in four identical sets at the bottom of the main body (1), and is symmetrically distributed at the four corners of the main body (1) with respect to the central axis of the main body (1).
3. The magnetically coupled decelerating stirrer according to claim 1, characterized in that: The position of the container bottle (601) corresponds to the position of the limiting seat (5), and the outer wall size of the container bottle (601) matches the inner wall size of the limiting seat (5).
4. The magnetically coupled decelerating stirrer according to claim 1, characterized in that: The stirring paddles (604) are arranged in multiple sets on the surface of the stirring shaft (603), and are distributed in a circular pattern with equal spacing around the center of the stirring shaft (603).
5. A magnetically coupled decelerating stirrer according to claim 1, characterized in that: The screw (609) drives the lifting block (610) to slide up and down in the lifting groove (607) via the first motor (608). The outer wall size of the lifting block (610) matches the inner wall size of the lifting groove (607).
6. A magnetically coupled decelerating stirrer according to claim 1, characterized in that: The rotating shaft (614) is connected to the driving wheel (615) by the second motor (613) to form a rotating structure. The driven wheel (616) drives the transmission shaft (617) and the external magnet (618) to rotate together through the driving wheel (615).
7. A magnetically coupled decelerating stirrer according to claim 1, characterized in that: The diameter of the driving wheel (615) is smaller than that of the driven wheel (616), and the number of teeth of the driven wheel (616) is greater than that of the driving wheel (615).