Single tank planetary ball millIt is a device designed specifically for small batch, high-precision grinding needs in laboratories. It achieves efficient grinding through unique planetary motion and is widely used in material research and development, sample preparation, and other fields. Its core components are a turntable and a ball mill jar installed on the turntable. When the turntable rotates, the ball mill jar revolves around the turntable axis and also rotates at high speed around itself, forming a planetary motion trajectory. This movement method causes the grinding balls (such as steel balls, agate balls, alumina balls, etc.) inside the ball milling jar to collide with each other at high speed, generating huge impact and friction forces, thereby grinding the material to the micrometer or even nanometer level.

　　Single tank planetary ball millIts components and functions are as follows:

1、 Drive System: Power Core

motor

To provide the power required for equipment operation, AC asynchronous motors are usually used, which have the characteristics of high power, stable speed, and high reliability. The motor transmits power to the main turntable through transmission devices such as belts and gears.

reducer

Reduce the high-speed speed of the motor to the appropriate speed required for the main turntable, while increasing the torque to ensure smooth and powerful rotation of the main turntable.

Transmission gear

Responsible for transmitting the power of the reducer to the main turntable and grinding tank, ensuring accurate speed ratios between the moving parts, and achieving coordinated revolution and rotation.

2、 Grinding system: the core of material crushing and mixing

Grinding jar (single jar)

Function: Loading materials and grinding media, it is a place for material crushing.

Material: Choose according to the properties of the material, common materials include:

Stainless steel: suitable for grinding metal materials and general inorganic materials, with strong wear resistance.

Agate: Suitable for materials with high purity requirements (such as semiconductor materials, pharmaceutical intermediates), it can effectively avoid material contamination.

Alumina ceramics: suitable for grinding high hardness materials, with strong corrosion resistance.

Polyurethane: Suitable for materials that are sensitive to metal pollution, such as certain electronic materials.

Structure: Typically cylindrical in shape with a smooth interior to reduce energy loss during the grinding process.

Grinding media

Function: Under the action of centrifugal force, friction force, and impact force, materials are squeezed, collided, and rubbed to achieve crushing and mixing.

Material: Common materials include steel balls, alumina balls, zirconia balls, agate balls, etc. Grinding media of different materials have different hardness, density, and wear resistance.

Size: The size of the grinding medium needs to be selected according to the material particle size and grinding requirements, usually with a diameter between a few millimeters and tens of millimeters.

3、 Transmission and Support Structure: Motion Coordination and Equipment Stability

Main turntable

Function: Carry the grinding tank and drive it to revolve around the central axis.

Structure: It is usually a circular disc-shaped structure, installed on the machine base through bearings to ensure smooth rotation.

Self rotating gear set

Function: Through gear transmission, the grinding tank rotates while revolving, forming a planetary gear system motion.

Composition: It includes fixed gears, intermediate gears, and self rotating gears, which transmit power through meshing to achieve the self rotation of the grinding tank.

base

Function: Support the entire device and provide a stable operating platform.

Structure: Usually welded from steel, it has sufficient strength and stiffness to withstand the huge centrifugal force and vibration generated during equipment operation.

4、 Control System: Automated Operation and Precise Control

Control Panel

Function: Provides a user interface for setting device parameters (such as speed, time) and starting/stopping the device.

Composition: Usually includes operating components such as power switch, start/stop button, speed adjustment knob, time setting button, etc.

PLC (Programmable Logic Controller)

Function: As the core of the control system, it automatically controls the operation of the motor and the output frequency of the frequency converter based on the parameters set by the operator and the operating status of the equipment detected by sensors, achieving automated operation of the equipment.

frequency converter

Function: Adjust the motor speed by changing the output frequency to change the motor speed, thereby achieving infinite adjustment of the main turntable speed to meet the grinding needs of different materials.

sensor

Function: Monitor the operating status of the equipment to ensure its safe operation.

Type:

Temperature sensor: detects the temperature of the grinding tank and motor to prevent equipment damage due to excessive temperature.

Vibration sensor: detects the vibration condition of the equipment, and when abnormal vibration occurs, promptly sends an alarm signal to remind operators to conduct inspection and maintenance.

5、 Auxiliary structure: Ensuring safety and convenience

protective shield

Function: To prevent operators from coming into contact with high-speed components during equipment operation and ensure their personal safety.

Structure: Usually installed around the grinding tank and transmission components, made of transparent materials for easy observation of equipment operation status.

shock absorption device

Function: Absorb the vibration generated during the operation of the equipment, reduce the impact of vibration on the surrounding environment and the equipment itself, and reduce noise.

Type: including shock-absorbing springs, rubber shock-absorbing pads, etc., usually installed at the bottom of the machine base.

Feeding and discharging device

Feeding device: used to load materials and grinding media into the grinding tank, usually including a feeding hopper and a screw conveyor.

Discharge device: used to discharge the ground material from the grinding tank, usually including a discharge sieve plate, a discharge chute, and a powder collection cover.