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Daily maintenance for jaw and cone crushers

November 8, 2024

A crusher is a machine that breaks down large rocks into smaller rocks, gravel, or rock dust. Crushers can be used to reduce the size of materials, change the form of waste materials so that they can be disposed of or recycled more efficiently, or reduce the size of a solid mix of raw materials so that pieces of different compositions can be easily separated in the next step.

Jaw crushers

Because of their simple structure, sturdiness, reliable operation, ease of maintenance and repair, and relatively low production and construction costs, jaw crushers are still widely used in the metallurgy and chemical industries today. It is used for coarse, medium, and fine crushing of various ores and rocks with a compressive strength of 147 – 245 MPa in building materials, electric power, transportation, and other industrial sectors.

Jaw crushers are classified into compound and simple pendulum types, primarily used for coarse and medium crushing, respectively.

Introduction to the Jaw Crusher Structure: A fixed jaw plate, movable jaw plate, frame, upper and lower guard plates, adjustment seat, movable jaw tie rod, and other components make up the jaw crusher. A good understanding of the jaw crusher's internal structure can help the jaw crusher during use and when problems arise.

Applications

The jaw crusher is primarily used for material processing's first crushing. Other crushers' inlets and outlets are larger. Because it is the first procedure of material processing, it is suitable for a wide range of materials, including metal ore and non-metallic minerals. River pebble, granite, basalt, iron ore, limestone, quartzite, diabase, iron ore, gold ore, copper ore, and others are common.

Daily jaw crusher maintenance

Issues that may arise during the jaw crusher's operation.

The jaw crusher's main machine abruptly stops, commonly known as a boring car.

  • Clear the discharge port blockage to ensure smooth discharge.
  • Replace or tighten the V-belt.
  • Replace or reinstall the fixed bushing.
  • Change the bearing.

The jaw crusher's output falls short of the factory standard.

Follow this process to eliminate the problem:

  • Replace or increase the crusher.
  • Change the motor wiring.
  • Adjust the discharge port to the manual's nominal discharge port and add a crusher for fine crushing.
  • Examine the tooth plate's tooth pitch size. If the jaw plate does not meet the standard, it must be replaced, and the relative position of the fixed jaw plate and the movable jaw plate must be adjusted to ensure that the tooth top is set and pressed to prevent displacement.
  • Increase the voltage at the work site to meet the host's high load requirements.
  • Change the bearing or movable jaw.

A beating or impact sound when the jaw crusher is moving and the fixed jaw plate is working.

  • Bolts should be tightened or aligned.
  • Adjust the discharge port to ensure that the clearance between the two jaws is correct.

The jaw crusher's primary sheave and movable jaw continue to operate normally, but the crushing process is halted.

  • Change the tension spring.
  • Change the tie rod.
  • Replace or reinstall the bracket.

Cone crusher

A cone crusher is a type of crushing machine used in the metallurgy, construction, road construction, chemical, and silicate industries. It is classified into several models based on different crushing principles and product particle sizes.

It has the advantages of a dependable structure, high productivity, improved particle size and shape, ease of adjustment, and lower operating costs. In addition, the overload protection in the cone crusher's spring release system allows the flow passage to pass through the crushing chamber without damaging the crusher.

Compound cone crushers, spring cone crushers, hydraulic cone crushers, and gyratory crushers are the four types of cone crushers. A cone crusher's structure mainly consists of a frame, a horizontal shaft, a moving cone, a balance wheel, an eccentric sleeve, an upper crushing wall (fixed cone), a lower crushing wall (moving cone), a hydraulic coupling, a lubrication system, and a hydraulic system.

Applications

Cone crushers are primarily used for hard materials like calcite, limestone, granite, river pebble, dolomite, bluestone, glass, basalt, iron ore, etc.

Daily cone crusher maintenance

When the material to be crushed by the cone crusher is wet or has a high-water content, the bolts used to secure the dust-proof sealing slip ring should be checked regularly.

Producing at full capacity is required. If not, the particle size of the product will be too coarse.

The lubricating oil should be changed frequently and should not be too dirty. If it is too dirty, it will hasten the wear of gears, bowl-shaped bushes, bushings, and other components and may even cause the bushings to grind to death.

The fixed condition of the slip ring should be checked regularly to avoid the phenomenon of a large amount of dust and ore entering the equipment body due to the slip ring of the dust-proof sealing box falling off during the operation of the cone crusher. This can affect the operation of the equipment and even cause it to malfunction.

Water in the crusher's oil causes the oil level in the oil tank to rise. In this case, you can adjust the water pressure slightly lower than the oil pressure, inspect and repair leaking parts, adjust the water supply, clean the return water and fuel tank, and replace them with new oil.

Why choose IMS Engineering?

IMS Engineering offers a range of high-quality and reliable specialist solutions for crusher plants at competitive prices.

Our complete range of solutions is manufactured and supplied by world-leading brands for guaranteed efficiency. This includes equipment like horizontal-shaft impactors, jaw crushers, and cone crushers critical for any stage of crushing for a comprehensive portfolio of closed-circuit and open-circuit portable crusher plants.

Contact IMS Engineering for details

With more than 60 years of experience and partnering with leading brands of specialist equipment, IMS Engineering is an industry leader and the ideal partner for your comminution mining company.

Contact us for more information about primary, secondary, and tertiary crushing equipment for your plants.

 

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