Common Fault Analysis and Treatment Methods of Sand Making Machine

Sand-making machine, also known as a vertical shaft impact crusher, is a widely used mechanical sand-making equipment. In production, the sand-making machine will inevitably encounter various problems. Once the machine fails, it will affect the production efficiency and thus the economic benefits. Today, I will introduce 10 common troubleshooting methods. If you encounter such problems, I hope to provide some help.

1. The operation of the equipment is unstable, and the fuselage swings too much

Causes of failure: 1) The wearing parts on the impeller are seriously worn. 2) The feed size is too large. 3) There are obstacles in the impeller channel, making the feeding uneven and swinging.

Solution: 1) Replace the wearing parts to balance the internal impeller of the sand-making machine. 2) Strictly control the feed particle size, not exceeding the maximum particle size allowed by the equipment. 3) Remove obstructions from the impeller passage and cleanly broken cavities frequently.

2. An abnormal sound is heard during the operation of the device

Cause of failure: The connecting bolts or lining plates, impellers, and other vulnerable parts inside the sand-making machine are loose and fall.

Solution: Immediately stop the machine and re-secure any loose parts.

3. The bearing is not flexible

Cause of failure: Material or other foreign objects have entered the sand-making machine’s bearing sealing ring.

Solution: Open the sealing ring and clean out the foreign bodies.

4. Bearing temperature increases

Causes of failure: 1) Dust and foreign matter enter the bearing components. 2) The bearing is damaged due to grinding. 3) The bearing lacks oil.

Solution: 1) Clean the foreign bodies. 2) Replace the bearings with new ones. 3) Add lubricating oil on time.

5. The sealing rings at the upper and lower ends of the shaft are damaged

Failure reason: Heat generated by friction between the upper (lower) bushing and the bottom surface of the upper (lower) gland causes damage over time.

Solution: Replace with new upper and lower sealing rings.

6. Oil seeps from the upper and lower ends of the shaft

Cause of failure: Because the sealing ring moves up and down with the bearing, a worn sealing ring leaks oil.

Solution: Replace the sealing ring.

7. Increased Emission Issues

Causes of failure: 1) The V-belt in the transmission system has loosened due to prolonged equipment operation; 2) The feed size is excessively large; 3) The impeller speed is improper, resulting in reduced efficiency.

Solution: 1) Adjust the belt tension; 2) Strictly adhere to the feeding requirements of the sand making machine (excessive feeding can cause severe equipment vibration, while insufficient feeding leads to inadequate impact and crushing, making it difficult to produce qualified finished products); 3) Adjust the impeller speed until it reaches the optimal standard.

8. Sudden Loud Noise or Roaring Sound

Causes of failure: 1) Bearing or gear malfunction; 2) Loose bolts; 3) Severe wear of wearing parts.

Solution: 1) Inspect the condition of bearings and gears, repairing or replacing them promptly as needed; 2) Tighten all bolts; 3) Replace worn-out components.

9. Excessive Idle Resistance

Cause of failure: Material blockage within the bearing seal cover.

Solution: Remove the clogged material from the bearing and check the corresponding equipment for clogged material.

10. The sound of metal colliding in the sand making machine

Cause of failure: The bushing, impeller, or other parts are loose and fall off.

Solution: Check the whole machine, and tighten or replace related parts.