Mill equipment classification
The mill equipment is designed for grinding products such as salt, sugar, medicinal herbs, nuts, soil, chemicals, flour, seeds, fruits, vegetables, etc.
Milling equipment is widely used in food and non-food industries, where they are often faced with the task of grinding certain types of products in order to produce fruit and vegetable mixtures, washing powders, animal feed, medicines, cereals, soups, spices, coffee and tea.
The application of the grinding mill equipment is very wide. Grinding and crushing covers many aspects of our life: medicine, cooking, everyday life.
There is a special type of mill with many options for external design and functional equipment for each type of production.
According to the method of the grinding process, the mill equipment is subdivided into:
- Rotary mills are used to fulfill several operations: impact and cutting. The grinding process in a rotary mill is as follows: the product enters the center of the grinding chamber and, when thrown onto the walls of the chamber, is crushed by the action of the rotor, which hits the walls and grinds the product. The rotor is equipped with teeth that are used as the main cutting tool. The more teeth a rotor has, the higher its crushing capacity. The products processed in rotary mills are fibrous, soft and hard substances. Rotary mills are actively used in the chemical, pharmaceutical and food industries. Chemicals, coal, medicines, seasonings, food granules, soil fertilizers, seeds, grains, etc. are produced using this equipment.
- Cutting mills are equipped with a rotor-knife and fixed cutting plates, which are not found on all models of mill equipment. The grinding process of a cutting mill is similar to the processing of a rotary mill. The only difference is that the rotor of the cutting mill is equipped not with teeth, but with a knife, which carries out the grinding action. In models with fixed cutting plates, the grinding process is more efficient, since product particles do not settle on the walls of the chamber, but are additionally processed using these blades. This design of the rotor allows you to reduce the cost of purchasing and selling the product.The cutting mill grinds soft, medium-hard, dry products: food products, medicines, coffee drinks, animal feed and mixtures, tea, cocoa, cigarettes and biological additives.
- Mechanical mortars, like rotary mills, perform several actions: grinding, mixing and grinding into a fine powder. The mill is equipped with a scraper, which helps to clean the surface of the mortar from the remains of the unprocessed product. The pestle makes grinding-abrasive movements, while from time to time it mixes the resulting mass. The mass likes mashed potatoes or powder. The power mortar works with a variety of materials of varying hardness, fragility and softness, such as ash, soil, salt, spices, yeast, seeds, etc.
- Disc mills are a device equipped with a special grinding disc. It rotates on its own axis, grabbing the product and passing it through its blades, thereby crushing it to the desired state. Disc mills, like cutting mills, can be equipped with additional blades, which remain stationary at the moment the disc rotates. This design increases the efficiency of the work and guarantees a higher quality of product chopping. Disc mills are engaged in batch and preliminary grinding of hard and fragile materials: glass, coal, ceramics, gypsum, chalk, coke.
- Ball mills use several balls of the same or unequal diameter as the main acting force. The grinding process occurs due to the rotation of the chamber and the impact of the balls, which develop high speeds and use the force of pressure and friction. To increase the grinding efficiency, the chambers are equipped with smaller balls. Combined with large balls, they give a greater crushing effect. Ball mills are widely used in the agricultural, pharmaceutical, geological, mineralogical industry. They easily grind soft, fibrous, hard and fragile materials by dry, wet or cryogenic grinding.
Thus, mill equipment is widely used in the modern industry. The grinding mills are especially popular at food productions, when it is necessary not only to pack the finished product, but also to process it before packaging.