What Is a Pneumatic Grinder?
A pneumatic grinder is a revolutionary device that uses air to grind and process objects.
The characteristics of airflow mills are that they create a high-speed airflow vortex, which simplifies the structure and facilitates cleaning and maintenance. In addition, the particle size of the raw material can be set freely by adjusting the air volume and rotation speed.
Furthermore, pneumatic grinders employ a self-grinding method in which the raw materials are crushed against each other, and the air acts as a buffer to prevent temperature rise. Processing is possible in a short time without damaging the structure of the components. Because of these features, pneumatic grinders are used in a wide range of fields, including pharmaceuticals, food, and chemicals.
Pneumatic grinders have a simple structure and are easy to clean and maintain. Their ability to adjust particle size and process materials quickly and without damage makes them useful in a wide variety of industries.
Uses of Pneumatic Grinders
Pneumatic grinders are self-grinding, which means that there is no metal-to-metal friction or collision, and the risk of contamination is low. Therefore, they can be used safely in fields where quality is important, such as food and medicine.
Specifically, they are used in the powder processing of raw materials for foods, Chinese medicine, pharmaceuticals, chemicals, resins, and ores. For example, in the milling of grains, wheat and rice flours can be efficiently processed. They are also used to powder spices, allowing the original ingredients of the food to be utilized without damaging the internal structure of the raw material.
Pneumatic grinders demonstrate their performance in a variety of fields. They are highly reliable in fields where safety is required, such as food and pharmaceuticals, due to the low risk of contamination by foreign materials. In addition, since the internal structure of raw materials can be pulverized without damaging them, products can be created that make the most of the original ingredients of the materials.
Principle of Pneumatic Grinders
Pneumatic grinders use screw blades to generate a high-speed air current, which causes particles to collide with each other. The material can be separated according to particle size. Specifically, materials and dregs that are smaller than the particle size are discharged with the rising airflow.
On the other hand, materials that have not been crushed to the set particle size will remain. This principle results in a finer and more uniform particle size with less variation than powders from other milling processes.
The principle of pneumatic grinders allows for improved product quality and more efficient processing. For example, uniformity of particle size is important in the production of foods and medicines. By improving their quality, consumers can purchase them with confidence.
In addition, because grinding is performed in an energy-efficient manner, environmentally-friendly manufacturing is possible, cleaning and maintenance are easier, and there is a low risk of foreign material contamination.
Types of Pneumatic Grinders
Pneumatic grinders are classified into three main types: jet mills, dry media mills, and fluid energy mills. Selecting the appropriate type of pneumatic grinder will enable the production of efficient and high-quality products.
1. Jet Mill
Jet mills are a type of pneumatic grinder that inject compressed air or steam at high speed to pulverize the material to be ground into fine particles. Because of their high pulverization capacity, jet mills are widely used in fields where precise particle size control is required, such as in the manufacture of pharmaceuticals and chemicals.
2. Dry Media Mill
Dry media mills are pneumatic grinders in which the material and the grinding media (balls, rods, etc.) are fed into the mill at the same time and milled by the airflow. Grinding is carried out by the collision of the material to be ground and the media. This type of mill is suitable for milling various materials such as metals, ceramics, and resins, and is characterized by its high uniformity of particle size.
3. Fluid Energy Mill
Fluid energy mills are pneumatic grinders that pulverize materials by bringing them to a high-pressure state through a high-speed air stream and then rapidly expanding them. This method can produce fine particles while preventing component change and deterioration caused by heat.
This type is suitable for processing foods and medicines and is used in fields where high quality is required.