Jaw crusher: types, principle and applications
A jaw or toggle crusher consists of a set of vertical jaws, one jaw being fixed and the other being moved back and forth relative to it by a cam or pitman mechanism. The jaws are farther apart at the top than at the bottom, forming a tapered chute so that the material is crushed progressively smaller and smaller as it travels downward until it is small enough to escape from the bottom opening.
TYPES OF JAW CRUSHERS
Blake jaw crusher:
In the Blake or jaw crusher the moveable jaw is pivoted at top. The greatest amount of motion is at the bottom which means it has the little tendency to choke.
Dodge jaw crusher:
In the dodge jaw crusher the moving jaw is pivoted at the bottom. As minimum movement is at the bottom it has a greater tendency to choke.
PRINCIPLE OF JAW CRUSHER
This jaw crusher uses motor as its power. Through the motor's wheels, the eccentric shaft is driven by the triangle belt and slot wheel to make the movable jaw plate move by a regulated track. Therefore, the materials in the crushing cavity composed of fixed jaw plate, movable jaw plate and side-lee board can be crushed and discharged through the discharging opening.
INDUSTERIAL APPLICATIONS
Jaw Crusher can be used in mining, metallurgical industry, construction, road and railway building, chemistry etc.
FEATURES OF JAW CRUSHER
• Simple structure easy maintenance.
• Stable performance.
• Even final particles and high crushing ratio.
