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Common Failures and Solutions of Hydraulic Cone Crusher

Mar. 28, 2020

Hydraulic series cone crusher is an advanced level cone crusher developed by the world's advanced crushing technology. It is widely used in metallurgy, construction, hydropower, transportation, chemical industry, and building materials industries. It is suitable for crushing hard and medium hardness. All kinds of ore and rocks above. Hydraulic cone crusher is a high-performance cone crusher. In the design, the rotation speed, stroke, and crushing cavity type are optimized to make it achieve interlaminar crushing, significantly increase the output, and greatly improve the shape of the product.

The principle of industrial hydraulic cone crusher:

When the hydraulic cone crusher works, the rotation of the motor is performed by a pulley or a coupling, a cone crusher drive shaft, and a cone crusher under the force of an eccentric sleeve to perform a swing motion around a fixed point. Therefore, the crushing wall of the crushing cone is sometimes close to and sometimes away from the surface of the mortar wall fixed on the adjusting sleeve, so that the ore is continuously impacted, crushed and bent in the crushing cavity to achieve the crushing of the ore. The motor drives the eccentric sleeve to rotate through the bevel gear so that the crushing cone rotates. The crushing cone is sometimes near and away from the fixed cone to complete the crushing and discharging. The connection between the support sleeve and the frame body is compressed by a spring. When the crusher falls into an unbreakable object such as a metal block, the spring will compress and deform, expelling foreign objects, achieving insurance and preventing machine damage.

Hydraulic Series Cone Crusher

Hydraulic Series Cone Crusher

Common faults and solutions:

Various faults often occur when the cone crusher works due to the grinding of the moving cone and insufficient spring pressure. The hydraulic cone crusher factory has summarized several common faults through years of practical operation experience to Analyze the causes and solutions of various failures.

1. The oil pump is hot. The fault is usually caused by too high oil concentration or low oil temperature in the oil pump. It can be solved by changing thin oil or heating.

2. The oil pump can work normally but the oil pressure display is too low. The cause of this failure may be blocked oil suction pipe, worn oil pump gear, or inaccurate display of pressure gauge. It can be solved by cleaning the oil pipe, replacing the oil pump or pressure gauge.

3. The oil pump works and the pressure indication is normal but there is no oil return. The fault is usually due to the blocked oil return pipe, the slope of the oil return pipe is too small or the oil is sticky and the temperature is low. Warm solution.

4. There is no oil in the oil level indicator or the oil flow is interrupted or the oil pressure drops. The cause of the failure is a blocked oil pipe, low oil temperature or abnormal operation of the oil pump. Generally, methods such as cleaning the oil pipe system, oil heating, and checking and repairing the oil pump can be taken Troubleshoot.

5. The oil return is reduced, and the oil in the fuel tank is also reduced. The cause may be that there is an oil leak under the crusher or the oil drain groove is clogged. The oil leaks from the seal ring. It can be checked by stopping the machine to eliminate oil leakage and adjust the oil supply. Solved by deepening the oil drainage ditch.

6. The cooler does not work or is not effective. The reason may be that there is no cooling water or insufficient water supply. The cooling system is blocked. Solution: Open the large watergate, normal water supply, check the water pressure gauge, and clean the cooler.

7. Oil return temperature is too high (> 60 ℃), cause analysis: harmful friction on eccentric shaft sleeve friction surface, abnormal bearing operation or insufficient oil groove section, blockage, solution: stop and repair oil supply, cooling system friction surface, Rinse clean.

8. There is oil in the water, and there is water in the oil. Failure analysis: The cooling water pressure exceeds the oil pressure or the individual water pipes in the cooler is broken, and the water penetrates into the oil. The solution: Make the cooling water pressure lower than the oil pressure by 0.5k / cm. Check the water pipe connector of the cooler for water leakage.

9. The drive shaft rotates unevenly, the sound is abnormal, the pulley rotates and the moving cone does not move. Analysis of the reasons: the installation of the teeth of the bevel gear is defective. The unbreakable object causes the shaft to break. The solution: stop the gear change, correct the meshing gap or replace the main shaft, and strengthen the iron removal system.

10. The crusher vibrates strongly and the speed of the movable cone increases. Reason analysis: There is no oil or dirty between the main shaft and the bushing, the movable cone sinks or the spherical bearing is damaged or the gap between the tapered bushing is small. The solution: stop the inspection, Find out the cause / clean, refuel/repair or replace or adjust the clearance.

11. There are more large pieces of broken products, cause analysis: movable cone wear, solution: reduce the ore outlet; replace the elbow.

12. Vibration is large during work. Reason analysis: insufficient spring pressure, more fine particles and viscous materials, uneven ore feeding, and insufficient spring elasticity. The solution is to compress or replace the spring and adjust the ore feeding.

13. I heard a cracking sound during rotation. Reason analysis: The lining board (moving, fixed) is loose, the screws or earrings are damaged, and the lining board is not tight and impacted. The solution: stop the machine for inspection, repair or replacement.

14. There is no water in the water seal device. Cause analysis: The water seal water supply pipe is abnormal. Solution: Stop the machine to find out the reason for the water supply interruption.