Working principle of high-efficiency coarse crusher
The core working principle of an efficient coarse crusher is "mechanical forced crushing", which compresses, splits, and impacts materials through the transmission of kinetic energy to achieve the purpose of crushing. Taking the most common jaw crusher as an example:
1. Core structure:
Fixed jaw plate: equivalent to a fixed platform.
Active jaw plate: Periodic reciprocating motion, forming a crushing chamber with a fixed jaw plate.
Eccentric shaft: The core transmission component that converts the rotational motion of the motor into the reciprocating motion of the movable jaw plate.
Flywheel: stores energy to ensure smooth operation of the machine.
2. Workflow:
Feed: The material is fed into the crushing chamber composed of a fixed jaw plate and a movable jaw plate through the feed inlet at the top of the crusher.
Squeezing and crushing: The motor drives the belt and pulley to rotate the eccentric shaft. The movable jaw moves back and forth accordingly. When the movable jaw plate approaches the fixed jaw plate, a huge squeezing and splitting force is generated on the material between the two jaw plates, causing them to break.
Discharge: When the movable jaw plate leaves the fixed jaw plate, the crushed material with a size smaller than the discharge port is discharged from the bottom by its own gravity. The materials that have not yet reached the size are left in the crushing chamber and continue to be squeezed until they meet the crushing standards before being discharged.
Core features: This is an intermittent forced crushing process with high efficiency and simple structure, suitable for primary crushing of hard materials with high compressive strength (such as granite, basalt, ore, etc.).
2、 Maintenance methods for high-efficiency coarse crushers
Regular maintenance is the key to ensuring efficient operation of equipment, extending its service life, and avoiding unexpected shutdowns. Please follow the four level maintenance system of "daily, weekly, monthly, and annual" as follows:
A. Daily maintenance (after each shift)
Comprehensive inspection: Before starting up, check all fastening bolts, especially the fastening of core components such as jaw plates and elbow plates.
Lubrication inspection: Check whether the oil level at lubrication points such as bearings is normal to ensure sufficient lubrication.
Cleaning work: After stopping the machine, clean the accumulated materials and dust inside and outside the machine to keep the equipment clean.
Abnormal noise and vibration monitoring: During operation, pay attention to monitoring for any abnormal impact sounds and observe for any abnormal vibrations.
B. Weekly/Monthly Maintenance
Lubricating grease filling: Regularly add an appropriate amount of lubricating grease to the bearing seat according to the frequency of use and equipment requirements. Pay attention to cleaning and prevent dust from entering.
Inspection of vulnerable parts: Focus on checking the wear of the jaw plate (broken plate). If there is severe wear or significant decrease in production efficiency, it should be adjusted or replaced in a timely manner to ensure product granularity.
Transmission component inspection: Check the tension and wear of the belt and pulley, and adjust or replace them if necessary.
C. Regular maintenance (every six months or one year)
Replace bearings and lubricating oil: For equipment that requires thin oil lubrication, the oil tank should be cleaned regularly and new lubricating oil should be replaced.
Comprehensive maintenance: Disassemble and inspect core components such as the spindle, elbow plate, and bearing seat, measure wear, and replace all worn or fatigued parts.
Structural integrity check: Check for cracks or deformations in the rack to ensure the stability of the equipment's main structure.