Eccentricity-adjustable planetary ball mill

Abstract

The utility model provides a planetary ball mill with an adjustable eccentric distance. The planetary ball mill comprises a fixed rack, a planetary revolution mechanism, a revolution motor and a rotation motor, the planetary revolution mechanism is arranged on the fixed rack, and is provided with at least one grinding tank assembly for accommodating a material to be ground and a grinding medium; the revolution motor is arranged on the fixed rack and is used for driving the planetary revolution mechanism to rotate relative to the fixed rack; the rotation motor is arranged on the planetary revolution mechanism and used for driving the grinding tank assembly to rotate relative to the planetary revolution mechanism; the planet revolution mechanism is further provided with an eccentric distance adjusting mechanism, the eccentric distance adjusting mechanism comprises a sliding rail, a sliding block and a locking piece which are arranged in the radial direction of a planet revolution rotating shaft, the sliding rail is in sliding fit with the sliding block, the locking piece is used for locking or releasing the sliding block, and the grinding tank assembly and the rotation motor are installed on the sliding block. And the eccentric distance of the grinding tank can be conveniently adjusted, so that the grinding conditions can be optimized according to different grinding requirements.

Description

Technical Field

[0001] This utility model relates to the field of planetary ball mill technology, and in particular to a planetary ball mill with adjustable eccentricity. Background Technology

[0002] Planetary ball mills, as highly efficient ultrafine powder preparation equipment, use planetary disks to drive grinding jars in planetary motion. This creates intense impact, shearing, and friction between the grinding balls and the material inside the jar, thereby achieving material crushing and mixing. The grinding effect is influenced by various parameters, including revolution speed, rotation speed, grinding time, ball-to-material ratio, and the eccentricity of the grinding jar (i.e., the distance between the center of the grinding jar and the center of revolution of the planetary disks).

[0003] In traditional planetary ball mill designs, the eccentricity of the grinding jar is determined by the size of the planetary gears, and is usually fixed. Alternatively, its adjustment is often cumbersome, requiring disassembly and reassembly of components, making it inconvenient for operators to quickly adjust according to actual grinding needs. However, eccentricity is a key factor affecting grinding energy and efficiency. Different eccentricities lead to significant changes in the trajectory and impact intensity of the grinding balls within the jar. For example, a larger eccentricity typically generates stronger impact forces, suitable for crushing harder materials; while a smaller eccentricity may be more conducive to generating high-frequency shearing and friction, suitable for fine grinding or mixing of certain materials.

[0004] Due to the lack of a convenient and effective eccentricity adjustment mechanism, traditional planetary ball mills often struggle to optimize grinding parameters to the best state when dealing with materials of different types, hardnesses, and initial particle sizes, or at different grinding stages of the same material (such as from coarse to fine grinding). Operators cannot flexibly change the eccentricity according to material characteristics or grinding objectives, which limits the equipment's versatility and further improvement of grinding effects.

[0005] Therefore, it is necessary to improve the existing planetary ball mill technology to overcome its shortcomings. Utility Model Content

[0006] To overcome the problems existing in related technologies, the purpose of this utility model is to provide an adjustable eccentricity planetary ball mill. This planetary ball mill, through an eccentricity adjustment mechanism set on the planetary revolution mechanism, allows for convenient adjustment of the eccentricity of the grinding jar, thereby optimizing grinding conditions according to different grinding requirements. This overcomes the problem that the difficulty in fixing or adjusting the eccentricity of planetary ball mills leads to an inability to flexibly optimize according to the target, thus affecting grinding efficiency and effect.

[0007] An eccentrically adjustable planetary ball mill includes:

[0008] Fixed frame;

[0009] A planetary orbiting mechanism is mounted on the fixed frame, and the planetary orbiting mechanism is provided with at least one grinding tank assembly for containing the material to be ground and the grinding media;

[0010] A planetary revolution motor, mounted on the fixed frame, is used to drive the planetary revolution mechanism to rotate relative to the fixed frame;

[0011] A self-rotating motor, mounted on the planetary revolution mechanism, is used to drive the grinding jar assembly to rotate relative to the planetary revolution mechanism;

[0012] The planetary revolution mechanism is also provided with an eccentricity adjustment mechanism, which includes a slide rail, a slider, and a locking member arranged radially along the planetary revolution axis. The slide rail and the slider are slidably engaged, and the locking member is used to lock or release the slider. The grinding jar assembly and the self-rotating motor are mounted on the slider.

[0013] Furthermore, the slide rail is a dovetail groove guide rail, and the grinding tank assembly includes a tank body and a self-rotating bearing seat located at the bottom of the tank body. The self-rotating bearing seat and the self-rotating motor are fixedly connected to the slider, and the tank body is detachably fixed to the self-rotating bearing seat by fasteners.

[0014] Furthermore, the fixed frame includes a base and a sealed cover, the base and the sealed cover are detachably connected, and the base and the sealed cover form a sealed grinding chamber.

[0015] Furthermore, the eccentricity adjustable planetary ball mill also includes a temperature control module, which includes a semiconductor cooling chip disposed in the base, with the cold end of the semiconductor cooling chip close to the grinding chamber and flush with the base.

[0016] Furthermore, there are two grinding jar assemblies, which are symmetrically arranged, and there are two sliders corresponding to the two grinding jar assemblies.

[0017] Furthermore, the locking element is a one-button locking knob;

[0018] The eccentricity adjustment mechanism further includes a rotation adjustment component, which includes a gear shaft located at the axis of the planetary revolution mechanism and two racks respectively connected to the two sliders. The two racks are symmetrically arranged along the axis of the planetary revolution mechanism. The bottom of the gear shaft is provided with an adjustment gear embedded in the planetary revolution mechanism. The adjustment gear meshes with both racks simultaneously. The top of the gear shaft is fixedly connected to the one-button locking knob.

[0019] The one-button locking knob is used to selectively lock or release the rotation of the gear shaft. When the one-button locking knob is in the released state, the gear shaft is rotated by the one-button locking knob, which can cause the adjusting gear to rotate and drive the two racks to move symmetrically. After adjustment, the gear shaft is locked by the one-button locking knob.

[0020] Furthermore, the planetary ball mill with adjustable eccentricity also includes a sensing module;

[0021] The sensing module includes a temperature sensor and a vibration sensor. The temperature sensor is located on the outer wall of the grinding jar assembly and is used to monitor the temperature of the grinding jar assembly in real time. The vibration sensor is located on the planetary orbit mechanism or a fixed part of the grinding jar assembly and is used to monitor the vibration state during the grinding process in real time.

[0022] Furthermore, the planetary ball mill with adjustable eccentricity also includes a motor condition monitoring unit and a frequency converter;

[0023] The motor operating condition monitoring unit is electrically connected to the revolution motor and the rotation motor, and is used to monitor the operating current or operating power of the revolution motor and the rotation motor in real time;

[0024] The variable frequency drive is electrically connected to the revolution motor and the rotation motor, and is used to adjust the speed of the revolution motor and the rotation motor according to the control signal.

[0025] In one embodiment, the control signal may originate from a main controller, which is electrically connected to the sensing module, the motor condition monitoring unit, and the frequency converter, and is used to receive monitoring data from the sensing module and the motor condition monitoring unit, and output control signals to control the frequency converter based on the monitoring data.

[0026] Furthermore, the sensing module also includes an acoustic sensor, which is disposed on the planetary orbit mechanism and close to the grinding jar assembly, for collecting acoustic signals generated by the grinding jar assembly during the grinding process.

[0027] Furthermore, the planetary ball mill with adjustable eccentricity also includes an audible and visual alarm, which emits a warning signal when the revolution motor and the rotation motor stop.

[0028] The beneficial effects of this utility model are as follows:

[0029] This utility model provides an adjustable eccentricity planetary ball mill. By setting an eccentricity adjustment mechanism on the planetary revolution mechanism, the equipment can flexibly adjust the eccentricity of the grinding jar assembly. The eccentricity adjustment mechanism includes a slide rail arranged radially along the planetary revolution axis, a slider that slides with the slide rail, and a locking component for locking or releasing the slider. The grinding jar assembly and the self-rotating motor are mounted on the slider. This allows operators to conveniently and quickly change the eccentricity of the grinding jar according to the type, hardness, and initial particle size of the material to be ground, or for specific grinding objectives (such as pursuing high impact force to crush hard materials, or pursuing high-frequency shearing to achieve fine grinding). By optimizing the eccentricity, the movement trajectory and impact energy of the grinding balls in the jar can be effectively controlled, thereby significantly improving grinding efficiency, improving the particle size distribution of the final product, and potentially reducing energy consumption per unit product. This effectively solves the problems of limited applicability and difficulty in achieving optimal grinding effects caused by the fixed eccentricity of traditional equipment. Attached Figure Description

[0030] Figure 1 This is a partial structural schematic diagram of the planetary ball mill with adjustable eccentricity provided in this application;

[0031] Figure 2 This is a schematic diagram of the eccentricity adjustment mechanism provided in this application;

[0032] Figure 3 This is a schematic diagram of the one-button locking knob provided in this application.

[0033] Figure label:

[0034] 100. Fixed frame; 200. Planetary revolution mechanism; 300. Grinding jar assembly; 400. Revolutionary motor; 500. Rotation motor; 610. Temperature sensor; 710. One-button locking knob; 720. Gear shaft; 730. Rack; 800. Semiconductor cooling chip. Detailed Implementation

[0035] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0036] like Figures 1 to 3As shown, this embodiment provides an eccentrically adjustable planetary ball mill. The planetary ball mill of this embodiment includes a fixed frame 100, which supports the various components of the equipment and provides a stable working platform. A planetary revolution mechanism 200 is provided on the fixed frame 100, which can revolve relative to the fixed frame 100. At least one grinding jar assembly 300 is provided on the planetary revolution mechanism 200 for containing the material to be ground and the grinding media. In this embodiment, preferably, two grinding jar assemblies 300 are symmetrically arranged on the planetary revolution mechanism 200.

[0037] The planetary revolution mechanism 200 is driven to revolve by a revolution motor 400 mounted on a fixed frame 100. The grinding jar assembly 300 is driven to rotate relative to the planetary revolution mechanism 200 by a rotation motor 500 mounted on the planetary revolution mechanism 200. The revolution motor 400 and the rotation motor 500 are reliable AC servo motors or AC asynchronous motors.

[0038] The planetary revolution mechanism 200 is equipped with an eccentricity adjustment mechanism. This mechanism adjusts the radial distance (eccentricity) of the grinding jar assembly 300 relative to the center of the planetary disk's revolution. The eccentricity adjustment mechanism includes a slide rail, a slider, and a locking element arranged radially along the planetary revolution axis. The slide rail is fixed to the planetary disk, and the slider slides against the slide rail. The grinding jar assembly 300 and its corresponding self-rotating motor 500 are mounted on the slider. The locking element locks or releases the slider's position on the slide rail, thereby fixing or allowing adjustment of the eccentricity. In a specific configuration, the slide rail can be a dovetail guide rail, which offers high stability and load-bearing capacity. Preferably, the grinding jar assembly 300 includes a jar for holding materials and a self-rotating bearing seat located at the bottom of the jar and mounting a self-rotating bearing. The self-rotating bearing seat and the self-rotating motor 500 thereon are fixedly connected to the slider, while the grinding jar body can be detachably fixed to the self-rotating bearing seat using fasteners (e.g., bolts, clamps, etc.). This detachable design makes it easy to replace grinding jars of different materials or capacities to meet different material requirements.

[0039] In a particularly preferred embodiment, two grinding jar assemblies 300 are provided, symmetrically arranged on the planetary disk. Two corresponding sliders are also provided, each carrying one grinding jar assembly 300 and the self-rotating motor 500. A one-button locking knob 710 is used for locking. The eccentricity adjustment mechanism further includes a rotation adjustment assembly for simultaneously and symmetrically adjusting the positions of the two sliders. The rotation adjustment assembly includes a gear shaft 720 located at the axis of the planetary revolution mechanism 200 and two racks 730 connected to the two sliders respectively. The two racks 730 are symmetrically arranged along the axis of the planetary revolution mechanism 200 and fixedly connected to their respective sliders. An adjusting gear is embedded in the planetary revolution mechanism 200 at the bottom of the gear shaft 720, meshing with both racks 730 simultaneously. Both racks 730 are arranged tangentially to the adjusting gear. The one-button locking knob 710 is fixedly connected to the top of the gear shaft 720. The one-touch locking knob 710 not only serves as an operating handle but also selectively locks or releases the rotation of the gear shaft 720 (e.g., engaging / disengaging the internal ratchet or locking pin via a push-pull knob). When the one-touch locking knob 710 is in the released state (i.e., the gear shaft 720 is not locked), rotating the knob will drive the gear shaft 720 and the adjusting gear to rotate. Since the adjusting gear meshes with the two racks 730, the two racks 730 will move symmetrically in the radial direction, thereby causing the two sliders and the grinding jar assembly 300 thereon to synchronously and symmetrically change their eccentricity. After adjustment, operating the one-touch locking knob 710 (e.g., pushing it back to its original position) will lock the gear shaft 720 and fix the current eccentricity setting. This symmetrical adjustment mechanism ensures the dynamic balance of the planetary disk, reduces equipment vibration and wear, and the one-touch locking knob 710 is convenient and quick to operate, improving adjustment efficiency. The adjustable eccentricity allows the ball mill to better adapt to different grinding needs. For example, by adjusting the eccentricity, the impact force of the grinding balls can be changed, thereby optimizing the grinding effect on materials of different hardness or particle size. Those skilled in the art will understand that any knob capable of achieving the above-mentioned push-pull or press-type locking and releasing functions is applicable. For example, in this embodiment, the one-button locking knob 710 can be a commercially available OTLK series product from IMAO (e.g., model OTLK4010-BK). This series of products allows for quick locking and releasing of the connecting shaft by axially pushing and pulling the knob body, and allows for shaft rotation adjustment in the released state.

[0040] Although this embodiment preferably describes a symmetrical adjustment method for the two grinding jar assemblies 300 to facilitate the dynamic balance of the planetary revolution mechanism 200, this is not a limitation of the present invention. The core of the eccentricity adjustment mechanism of the present invention lies in the slide rail radially arranged along the axis of rotation of the planetary revolution mechanism 200, the slider slidingly engaged with the slide rail, and the locking element for locking or releasing the slider. Therefore, when only one grinding jar assembly 300 is provided on the planetary revolution mechanism 200, the grinding jar assembly 300 and its corresponding self-rotating motor 500 are also mounted on one slider. In this case, the slider can be manually adjusted radially by sliding directly on the slide rail and fixed by a locking element (e.g., a manual locking bolt or a quick-locking handle) to achieve eccentricity adjustment. Alternatively, an independent adjustment mechanism can be provided for the single slider, such as a single lead screw and nut mechanism or a single gear and rack mechanism (not linked to another slider), which is driven by the operator to change the position of the slider. If multiple grinding jar assemblies 300 are installed on the planetary revolution mechanism 200 but it is not necessary or inconvenient to achieve the dual-jar symmetrical linkage adjustment as described above, each grinding jar assembly 300 and its self-rotation motor 500 can be installed on their respective sliders and equipped with independent eccentricity adjustment and locking mechanisms, allowing the operator to independently adjust the eccentricity of each grinding jar assembly 300.

[0041] In a further embodiment, the fixed frame 100 may include a base and a detachably connected sealing cover, which, when fastened or sealed together, form a sealed grinding chamber. This sealed structure facilitates grinding under a specific atmosphere, such as under the protection of an inert gas (e.g., nitrogen, argon), to prevent material oxidation or other chemical reactions, thus preserving the original properties of the material. For temperature control, the eccentrically adjustable planetary ball mill may also include a temperature control module. The temperature control module may include a semiconductor cooling chip 800 located inside the base near the grinding chamber. The cold end of the semiconductor cooling chip 800 faces or is flush with the base, transferring cooling energy to the grinding chamber area through heat conduction to achieve cooling control of the grinding process. The temperature control module can be electrically connected to the main controller, which automatically controls the process based on data from the temperature sensor 610 (when the system is equipped with both a main controller and a temperature sensor). The temperature control module allows the ball mill to be used for grinding heat-sensitive materials or for mechanochemical synthesis under conditions requiring controlled reaction temperatures. Of course, the temperature control module can also take other forms, such as cooling or heating outside the grinding tank or below the planetary disk through a liquid circulation pipe.

[0042] Furthermore, the planetary ball mill can also be equipped with an intelligent parameter adjustment system to enhance the equipment's monitoring and regulation capabilities. The intelligent parameter adjustment system includes a sensing module, a motor condition monitoring unit, a frequency converter, and a main controller.

[0043] The sensing module is used to collect key physical parameters during the grinding process in real time. The sensing module may include a temperature sensor 610 and a vibration sensor. The temperature sensor 610 is preferably a high-precision thermocouple or platinum resistance thermometer, with its sensing end closely attached to or in contact with the outer wall of the grinding jar assembly 300 to monitor the surface temperature of the grinding jar accurately and in real time. The vibration sensor may be located at a fixed position on the planetary disk of the planetary mechanism 200 near the grinding jar assembly 300, or on a fixed component of the grinding jar assembly 300 itself, to monitor the vibration state of the planetary disk or grinding jar during the grinding process in real time. The vibration sensor may be an accelerometer, a piezoelectric vibration sensor, or a laser Doppler vibrometer, etc., and its installation method can be selected according to actual conditions, such as bolt fixing, magnetic adsorption, or strong adhesive bonding, to ensure accurate pickup of vibration signals. In an optional embodiment, the sensing module may also include an acoustic sensor. The acoustic sensor is preferably a high-sensitivity microphone, installed on the planetary mechanism 200 near the grinding jar assembly 300, to collect acoustic signals generated by the interaction between the grinding balls and the material during the grinding process.

[0044] The motor condition monitoring unit is electrically connected to the revolution motor 400 and the rotation motor 500. This unit is preferably integrated within the frequency converter that controls the motors, or it can be connected in series in the motor circuit as a separate current / power sensor module. The motor condition monitoring unit is used to monitor the operating current or power of the revolution motor 400 and the rotation motor 500 in real time.

[0045] The frequency converter is electrically connected to the revolution motor 400 and the rotation motor 500. The frequency converter has the function of receiving control signals and dynamically adjusting the speed of the connected motors accurately and quickly.

[0046] The main controller is electrically connected to the sensors of the sensing module, the motor condition monitoring unit, and the frequency converter. The main controller receives real-time monitoring data collected by the sensing module and the motor condition monitoring unit, and processes and analyzes this data. Based on user-defined or preset strategies, or further combined with specific control algorithms, the main controller outputs control signals to the rotary motor 400 and the self-rotating motor 500 via the frequency converter to adjust their speeds. For example, based on data from the temperature sensor 610, when the temperature of the grinding tank assembly 300 exceeds a preset threshold, the main controller reduces the speed of the rotary motor 400 and / or the self-rotating motor 500 via the frequency converter to control the temperature rise; or, when the temperature is too high, it directly controls the motor to stop and triggers an alarm (if an audible and visual alarm is configured). Similarly, when the vibration sensor detects abnormal vibration (e.g., amplitude or frequency exceeding the normal range), the main controller can determine that the equipment is operating unstablely or the grinding state is abnormal, and then adjust the motor speed or execute a protective shutdown. Furthermore, the main controller can determine the stage of the grinding process (such as changes in material particle size) or the grinding endpoint based on the acoustic signal characteristics (such as changes in intensity at specific frequencies) collected by acoustic sensors (if configured), and automatically adjust the grinding parameters or stop grinding accordingly. The main controller can receive signals from acoustic sensors and determine the grinding endpoint based on their characteristics, thereby controlling the motor to stop via the frequency converter driver.

[0047] Furthermore, the intelligent parameter adjustment system may also include an audible and visual alarm. The audible and visual alarm is electrically connected to the main controller. When the main controller determines that grinding is complete and controls the revolution motor 400 and the rotation motor 500 to stop, or when it detects an abnormal situation, it can simultaneously drive the audible and visual alarm to issue a warning signal, so that operators can promptly understand the equipment status and improve operational safety.

[0048] The eccentricity adjustable planetary ball mill of this embodiment, through the design and coordination of the above-described structures, especially the flexible and adjustable eccentricity adjustment mechanism, the controllable grinding environment (sealed cavity and temperature control module), and the optional intelligent monitoring / regulation system, significantly improves the equipment's material adaptability, functional versatility, and automation level. It can better adapt to different grinding needs, achieve more precise control of grinding parameters, improve grinding efficiency and quality, and reduce operational difficulty.

[0049] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this application. Any specific values ​​in all examples shown and discussed herein should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0050] Furthermore, it should be noted that the use of terms such as "first" and "second" is merely for ease of distinction, and unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

[0051] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A planetary ball mill with adjustable eccentricity, characterized in that, include: Fixed frame (100); A planetary orbit mechanism (200) is provided on the fixed frame (100), and the planetary orbit mechanism (200) is provided with at least one grinding tank assembly (300) for containing the material to be ground and the grinding media; A planetary revolution motor (400) is mounted on the fixed frame (100) and is used to drive the planetary revolution mechanism (200) to rotate relative to the fixed frame (100); A self-rotating motor (500) is mounted on the planetary revolution mechanism (200) for driving the grinding jar assembly (300) to rotate relative to the planetary revolution mechanism (200); The planetary revolution mechanism (200) is also provided with an eccentricity adjustment mechanism. The eccentricity adjustment mechanism includes a slide rail, a slider and a locking member arranged radially along the axis of the planetary revolution. The slide rail is slidably engaged with the slider. The locking member is used to lock or release the slider. The grinding jar assembly (300) and the self-rotating motor (500) are mounted on the slider.

2. The planetary ball mill with adjustable eccentricity according to claim 1, characterized in that: The slide rail is a dovetail groove guide rail. The grinding tank assembly (300) includes a tank body and a self-rotating bearing seat located at the bottom of the tank body. The self-rotating bearing seat and the self-rotating motor (500) are fixedly connected to the slider. The tank body is detachably fixed to the self-rotating bearing seat by fasteners.

3. The planetary ball mill with adjustable eccentricity according to claim 1 or 2, characterized in that: The fixed frame (100) includes a base and a sealed cover, the base and the sealed cover are detachably connected, and the base and the sealed cover form a sealed grinding cavity.

4. The planetary ball mill with adjustable eccentricity according to claim 3, characterized in that: The eccentricity adjustable planetary ball mill also includes a temperature control module, which includes a semiconductor cooling chip (800) disposed in the base. The cold end of the semiconductor cooling chip (800) is close to the grinding chamber and flush with the base.

5. The planetary ball mill with adjustable eccentricity according to claim 1, characterized in that: Two grinding jar assemblies (300) are provided, and the two grinding jar assemblies (300) are symmetrically arranged. Two sliders are provided corresponding to the two grinding jar assemblies (300).

6. The planetary ball mill with adjustable eccentricity according to claim 5, characterized in that: The locking component is a one-button locking knob (710); The eccentricity adjustment mechanism further includes a rotation adjustment component, which includes a gear shaft (720) located at the axis of the planetary revolution mechanism (200) and two racks (730) respectively connected to the two sliders. The two racks (730) are symmetrically arranged along the axis of the planetary revolution mechanism (200). The bottom of the gear shaft (720) is provided with an adjustment gear embedded in the planetary revolution mechanism (200). The adjustment gear meshes with both racks (730) at the same time. The top of the gear shaft (720) is fixedly connected to the one-button locking knob (710). The one-button locking knob (710) is used to selectively lock or release the rotation of the gear shaft (720). When the one-button locking knob (710) is in the released state, the gear shaft (720) is driven to rotate by the one-button locking knob (710), which can cause the adjusting gear to rotate and drive the two racks (730) to move symmetrically. After adjustment, the gear shaft (720) is locked by the one-button locking knob (710).

7. The planetary ball mill with adjustable eccentricity according to claim 1, characterized in that: The planetary ball mill with adjustable eccentricity also includes a sensing module; The sensing module includes a temperature sensor (610) and a vibration sensor. The temperature sensor (610) is located on the outer wall of the grinding jar assembly (300) and is used to monitor the temperature of the grinding jar assembly (300) in real time. The vibration sensor is located on the planetary orbit mechanism (200) or a fixed component of the grinding jar assembly (300) and is used to monitor the vibration state during the grinding process in real time.

8. The planetary ball mill with adjustable eccentricity according to claim 7, characterized in that: The planetary ball mill with adjustable eccentricity also includes a motor condition monitoring unit and a frequency converter; The motor operating condition monitoring unit is electrically connected to the revolution motor (400) and the rotation motor (500) and is used to monitor the operating current or operating power of the revolution motor (400) and the rotation motor (500) in real time. The variable frequency drive is electrically connected to the revolution motor (400) and the rotation motor (500) and is used to adjust the speed of the revolution motor (400) and the rotation motor (500) according to the control signal.

9. The planetary ball mill with adjustable eccentricity according to claim 8, characterized in that: The sensing module also includes an acoustic sensor, which is disposed on the planetary orbit mechanism (200) and close to the grinding jar assembly (300) for collecting acoustic signals generated by the grinding jar assembly (300) during the grinding process.

10. The planetary ball mill with adjustable eccentricity according to claim 8, characterized in that: The planetary ball mill with adjustable eccentricity also includes an audible and visual alarm, which emits a warning signal when the revolution motor and the rotation motor stop.

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