Stone crushers are devices that are used in the processing of minerals to crush the raw materials extracted from the mine, which are called stone crushers.
What is a Crusher?
Jaw Crusher is a kind of machine used to crush the rocks, but the rocks have different reactions to crushing, some of which are easily crushed, but others are completely converted to powder. Become and eventually some of them are very resistant.
This type of crusher is capable of crushing large stones that are more than 5 cm in size by applying pressure between the two plates or the jaw. These rocks are always exposed to erosion due to their constant collision with the types of large stones that are considered entrances. Therefore, they are usually made of manganese steel and are highly resistant to this problem.
This machine has a capacity equal to 6 thousand tons per hour and the angle between two jaws in this type of machine is between 26 and 27 degrees. The size and model of all types of jaw crushers are also determined according to the dimensions of its opening, for example, if the model of this stone crusher is 100 x 200, it means that the entrance opening is 100 x 200 cm.
Jaws
The jaw crusher, which is one of the most common and widely used crushers, is made in two ways: single arm and double arm:
Single -arm crusher
In this type of stone crushers, its mobile jaw moves at a very low speed in four opposite directions: up, down, forward and backward. The pressure applied to the stones in this crusher is less and their entrance opening is smaller, so it is suitable for crushing hard stones. The single-arm jaw crusher is lighter, simpler and cheaper compared to the two-arm type, but it is not economical for abrasive and very hard stones.
Jawbone
In this type of crusher, the jaw motion is only front and back, but the pressure between the jaws is more than the single arm. Their entrance is larger and used to crush very hard stones. Of course, they have a heavier weight than the single arm type and are more costly use.
The jaw crusher consists of a fixed jaw and a movable jaw. The movement of the movable jaw is provided by an eccentric shaft connected to the motor by a belt and pulley. With the movement of the jaw, the materials are affected by the compressive force (and sometimes impact or shear) and are crushed. The distance between the two jaws in the upper part is called the opening and the distance between the two jaws in the lower part is called the throat.