Grinding mechanisms are applied in many household and industrial processes. Some of the applications require large sophisticated machines with high power consumption while others require smaller machines that consume fewer units. A hammer mill is used in most of these applications for grinding large pieces into fine segments of various grades. It comes in different sizes and styles meant for a variety of applications. However, the working mechanisms are similar. Hammers are used for the grinding process in each of the different types used in various industries.
It is quite important to know the various components of a hammer mill in order to understand how it works. It has a steel drum that contains hammers mounted on a central shaft. The shaft is connected to a mortar through a series of gears and belt drives. The gears are used to vary its speed depending on the preference of the user. As the shaft rotates, it swings the hammers and makes them crush large pieces fed into the machine. As the hammers grind on the large pieces, they push finely ground pieces to screen filters. The pieces are allowed to pass through selectively depending on their individual sizes.
The hammer mill can be either primary, secondary or tertiary in operation. The mode of classification used relies on the power input of the machine, size and application. Primary mills are used for small applications and can be powered by single face voltage sources. Tertiary mills on the other hand are known for their heavy power consumption and can be used in heavy industries. Technological inventions have led to the manufacture of screenless mills. They use air systems to filter ground material. They have a couple of advantages as compared to the screened type. These are increased reliability and reduced power consumption. Their cost of operation is quite cheap.