How to adjust the speed of the classifying wheel of Carbon Black Crushing Equipment to control the particle fineness?

1. Overview of equipment structure and working principle
The internal structure of Carbon Black Crushing Equipment includes an ultrafine classifier at the top and an ultrafine pulverizer at the bottom. The pulverizing chamber of the pulverizer consists of a pulverizing disc and a grinding hammer, which is responsible for pulverizing the raw carbon black into fine powder. The classifier is located at the top of the equipment and consists of a classifying wheel. Its main function is to classify the crushed powder according to the particle size.

The crushed fine powder is divided into standard products and substandard products under the action of the classifier. The standard product is discharged through the discharge pipe, and the substandard powder is returned to the feed port through the coarse material reflux device and continues to be crushed until it meets the standard. The speed of the classifying wheel has a direct impact on the classification effect.

2. Adjustment method of the speed of the classifying wheel
2.1 The role of the classifying wheel
The classifying wheel is the core component of the classifier. It generates centrifugal force through high-speed rotation to classify the crushed powder into different particle sizes. The speed of the classifying wheel directly affects the classification accuracy and particle fineness of the powder. Higher speed can generate greater centrifugal force, so that finer powders are easier to separate, while coarser powders will be retained in the classification chamber.

2.2 Ways to adjust the speed of the classifying wheel
Carbon Black Crushing Equipment is usually equipped with an electric speed control system or frequency converter, which allows the user to accurately adjust the speed of the classifying wheel. Ways to adjust the speed of the classifying wheel include:

Manual adjustment: The speed of the classifying wheel is set by a manual control device on the equipment (such as a speed knob or slider). This method is suitable for equipment that requires manual adjustment.
Automatic adjustment: Some advanced equipment is equipped with an automatic adjustment system that monitors the particle size of the powder in real time through sensors and automatically adjusts the speed of the classifying wheel to keep the particle fineness within the set range.
2.3 Relationship between classifying wheel speed and particle fineness
Higher speed: When the speed of the classifying wheel increases, the centrifugal force generated by the classifier increases, which can separate finer powders. This setting is suitable for occasions where higher product particle fineness is required. Higher speeds are usually accompanied by less screen residue.
Lower speed: When the speed of the classifying wheel decreases, the centrifugal force decreases, making it easier for coarser powders to remain in the classification chamber. At this point, the product particles are relatively coarse, but it can handle larger powders.
3. Practical operation of adjusting the speed of the grading wheel
In actual operation, the following factors need to be considered when adjusting the speed of the grading wheel:

Raw material properties: Different carbon black raw materials may have different physical properties, such as hardness, particle size distribution, etc., which will affect the speed setting of the grading wheel.
Product specifications: According to the quality requirements of the final product, select the appropriate grading wheel speed to ensure that the powder fineness meets the standard.
Equipment status: Regularly check the operating status of the equipment to ensure that the speed adjustment system of the grading wheel works normally to avoid affecting the grading effect.