Jaw crusher & Cone crusher-Tips of Daily Maintenance

Jaw crusher is an earlier crushing equipment, because of its simple structure, sturdiness, reliable operation, easy maintenance, and repair, and relatively low production and construction costs, it is still widely used in the metallurgy, and chemical industry until now.  building materials, electric power, transportation, and other industrial sectors, it is used for coarse, medium, and fine crushing of various ores and rocks with a compressive strength of 147-245MPa.

jaw crushers
Jaw crushers are generally divided into two types: compound pendulum and simple pendulum, which are mainly used for coarse and medium crushing. In recent years, compound pendulum jaw crushers for fine crushing and high-strength, high-hardness micro-carbon ferrochromium powerful jaw crushers have emerged.

Jaw crushers can actually be divided into two types, a coarse crusher and a fine crusher respectively called a coarse jaw crusher and a fine jaw crusher. The fine and coarse jaw crushers are also different in model naming. The coarse jaw crusher is generally named in the form of “PE+number”, and the fine jaw crusher is called in the form of “PEX+number”.

Introduction to the structure of jaw crusher: The jaw crusher is mainly composed of: a fixed jaw plate, movable jaw plate, frame, upper and lower guard plates, adjustment seat, movable jaw tie rod, etc. A good understanding of the internal structure of the jaw crusher can help the jaw crusher during use and when problems occur.

Applicable materials:

The jaw crusher is mainly used in the first crushing of material processing. The inlet and outlet are larger than other crushers. It is the first procedure of material processing, so it is suitable for many materials, such as metal ore and Non-metallic minerals can be used. Common ones include river pebble, granite, basalt, iron ore, limestone, quartzite, diabase, iron ore, gold ore, copper ore, etc. However, jaw crushers are also divided into many series and models. Different crushers may be suitable for different materials. You can choose a suitable crusher according to your own needs, including processing materials, production capacity, applicable areas, and discharge applications.

Jaw Crusher Daily Maintenance

What problems will occur during the operation of the jaw crusher?

1. The main machine of the jaw crusher suddenly stops (commonly known as a boring car).

2. Why does the output of the jaw crusher fail to reach the factory standard?

3. Why is there a beating or impact sound when the jaw crusher is moving and the fixed jaw plate is working?

4. The main sheave and movable jaw of the jaw crusher run normally, but the crushing work stops.

How to solve the problems in the operation of the jaw crusher?

1. Why does the output of the jaw crusher fail to reach the factory standard? Method of exclusion:
  • Replace or increase the crusher
  • Replace the motor wiring
  • Adjust the discharge port to the nominal discharge port specified in the manual and add a crusher for the fine crushing
  • Check the tooth pitch size of the tooth plate. If it does not meet the standard, the jaw plate must be replaced, and the relative position of the fixed jaw plate and the movable jaw plate should be adjusted to ensure that the tooth top is fixed and pressed to prevent displacement
  • Increase the voltage of the work site to adapt to the heavy load requirements of the host
  • Replace the bearing or movable jaw
2. Why there is a beating or impact sound when the jaw crusher is moving and the fixed jaw plate is working? Method of exclusion:
  • Tighten or align the bolts
  • Adjust the discharge port to ensure the correct clearance between the two jaws
3. The main sheave and movable jaw of the jaw crusher run normally, but the crushing work stops. Method of exclusion:
  • Replace the tension spring
  • Replace the tie rod
  • Reinstall or replace the bracket
4.The main machine of the jaw crusher suddenly stops (commonly known as the boring car) elimination method:
  • Clear the blockage of the discharge port to ensure smooth discharge
  • Tighten or replace the V-belt
  • Reinstall or replace the fixed bushing
  • Requirements
  • Replace the bearing
A Cone crusher is a crushing machine suitable for raw materials in metallurgy, construction, road construction, chemical, and silicate industries. According to different crushing principles and product particle size, it is divided into many models.

It has the advantages of reliable structure, high productivity, better-finished particle size and shape, easy adjustment, and lower operating costs. The cone crusher’s spring release system has overload protection, allowing the flow passage to pass through the crushing chamber without damaging the crusher.
Cone Crusher factory

Cone crushers can be divided into four types: compound cone crushers, spring cone crushers, hydraulic cone crushers, and gyratory crushers. According to different models, cone crushers are divided into vertical shaft cone crushers, (VSC) series cone crushers (compound cone crushers), Simmons cone crushers, PY cone crushers, single-cylinder hydraulic cone crushers, multi-cylinder hydraulic cone crushers Cone Crusher, Gyratory Crusher, etc.

Introduction to the structure of a cone crusher: the structure of a cone crusher mainly includes a frame, horizontal shaft, moving cone, balance wheel, eccentric sleeve, upper crushing wall (fixed cone), lower crushing wall (moving cone), hydraulic coupling, lubrication system, hydraulic system.

Applicable materials:

A Cone crusher is mainly used for hard materials, such as calcite, limestone, granite, river pebble, dolomite, bluestone, glass, basalt, iron ore, etc.

Cone Crusher Daily Maintenance

How to maintain the cone crusher?

1. When the material to be crushed by the cone crusher is wet or has large water content, the fixing bolts for fixing the dust-proof sealing slip ring should be checked frequently;

2. It is necessary to produce at full capacity, otherwise the particle size of the product will be too coarse;

3. The lubricating oil should be replaced frequently, and it should not be too dirty. If it is too dirty, it will accelerate the wear of gears, bowl-shaped bushes, bushings, etc., and even cause the bushings to grind to death;

4. The fixed condition of the slip ring should be checked frequently to prevent the phenomenon that a large amount of dust and ore entering the equipment body due to the fact that the slip ring of the dust-proof sealing box is not found to fall off during the operation of the cone crusher, which will affect the operation of the equipment and even cause the equipment to malfunction;

5. There is water in the oil of the crusher, which will cause the oil level of the oil tank to rise. The water pressure in the cooler is higher than the oil pressure, the cooler is leaking, the water supply volume of the water seal is too large, or the water supply pipe is blocked, all of which can cause water to be mixed into the cone crusher oil, causing the oil level in the oil tank to be “forced to rise”. 

In response to this situation, we can adjust the water pressure to be slightly lower than the oil pressure; check and repair the leaking parts; adjust the water supply; clean the return water and fuel tank, and replace them with new oil.

Sandrock Mining supplies qualifies Jaw crushers and cone crushers with reasonable price. If you have any questions about crushers, please feel free to contact Sandrock now!