The Introduction of Jaw Crusher
Jaw crusher is commonly known as jaw crusher, also known as tiger mouth. The crushing chamber is composed of two jaw plates, the moving jaw and the static jaw, which simulate the movement of the two jaws of animals to complete the material crushing operation. Although jaw crusher is an old ore crushing equipment, it is widely used in mining, smelting, building materials, highway, railway and other industries due to its simple structure, reliable operation, easy manufacturing and convenient maintenance.
Jaw crushers are often used as primary and secondary crushers, and can be used to crush all materials with a compressive strength below 320Mpa, such as basalt, granite, marble, and limestone.
According to the width of the feed opening, jaw crushers are divided into three types: large, medium, and small. The feed opening width greater than 600mm is large, between 300-600mm is medium, and less than 300mm is small.
Working Principle of Jaw Crusher
The motor is used as the power source. The motor inputs power to the pulley through the V-belt. The pulley drives the eccentric shaft to rotate to drive the movable jaw body to swing forward and backward and up and down.
When the movable jaw plate moves closer to the fixed jaw plate, the volume of the crushing chamber decreases, and the materials in the crushing chamber are squeezed or broken. When the movable jaw plate moves away from the fixed jaw plate, the volume of the crushing chamber increases, and the small pieces of crushed materials in the crushing chamber are discharged from the discharge port. This is a continuous cycle movement to achieve the crushing operation.
The structure of Jaw crusher
The main components of jaw crusher
The jaw crusher is mainly composed of the frame part, the eccentric shaft rotating part, the crushing chamber working part, the safety device, the discharge port adjustment device, etc.
Fragile parts of Jaw crusher
Fragile part : Toggle plate, Side guard, Moving jaw, Static jaw, Spring, Bearing, V-belt and Toggle plate pad.
Advantages of PE jaw crusher
High performance: It has a large output
Good stability: Compared with the jaw crusher of the same specification, it has higher stability.
High reliability: The heat-treated forged eccentric shaft, oversized bearings, E-type frame, etc. make the equipment durable and more reliable.
Easy operation and maintenance: It is more convenient to adjust the size of the discharge opening and replace the toggle plate, which can effectively shorten the operation and maintenance time.
wide application: Suitable for various crushing processes.
Technical parameters of PE jaw crusher
Adjustment method of jaw crusher discharge port
Shim adjustment: This adjustment method is often used for large jaw crushers. This method can be adjusted in multiple stages, the machine structure is relatively compact, and the weight of the equipment can be reduced, but the machine must be stopped during adjustment
Wedge adjustment: This adjustment device is often used for medium and small jaw crushers. This method can achieve step less adjustment, which is convenient to adjust and saves time. There is no need to stop the machine for adjustment, but it increases the size and weight of the machine
Factors affecting the production capacity of jaw crushers:
1. Hardness of materials: The harder the material, the more difficult it is to crush, and the more severe the wear on the equipment.
2. Composition of materials: The more fine powder contained in the material before the jaw crusher, the more it affects sand making, because these fine powders are easy to adhere and affect transportation.
3. Fineness of materials after crushing by jaw crusher: The fineness requirement is high, that is, the finer the material coming out of the crusher, the smaller the crushing capacity.
4. Viscosity of materials: The greater the viscosity of the material, the easier it is to adhere. Therefore, when selecting materials, it is important to note that the viscosity of the material should not be too large.
5. Humidity of materials: When the moisture content in the material is large, the material is easy to adhere in the jaw crusher, and it is also easy to cause blockage during the material feeding process, resulting in reduced sand making capacity.
