5 Common Faults of Sand Washing Machines

The sand washing machine is an essential piece of production equipment in the manufactured sand production line. Its primary function is to remove soil and dust from the surface of the sand, ensuring that the manufactured sand meets standard construction requirements. However, prolonged use inevitably leads to potential failures. Below are five common causes of failure for sand washing machines, along with their solutions.

1. Sand Washing Machine Shaft Breakage

There are two main reasons for shaft breakage in sand washing machines. The first relates to issues with the shaft itself, such as poor quality or insufficient strength of the hollow shaft material, or improper handling during installation. The second involves operational factors, including uneven sand return volumes, unbalanced operating loads on the classifier, or incorrect operation by technicians.

Solution: If the fracture is minor, it can be re-welded; if severe, replace with a new hollow shaft.

2. Abnormal Vibration or Noise in Sand Washing Machines

Abnormal vibration or noise during operation may result from blockages caused by oversized material particles or improper installation of the sand washing machine.

Solution: Stop feeding, allow remaining materials to process fully before shutting down for inspection, and restart the sand washing machine only after confirming proper setup.

3. Bent Spiral Blades or Spokes in Spiral Sand Washers

This issue often arises when excessive returned sand blocks the return tank, or when insufficient screw lift occurs prior to startup.

Solution: Replace bent spiral blades or spokes, reduce material throughput, and ensure the spiral reaches the specified height.

4. Premature Gear Damage in Sand Washing Machines

Prolonged use leads to wear-induced gear damage.

Solution: Perform regular maintenance on the sand washing machine and replace worn gears promptly.

5. Vibration of the Lifting Rod in Sand Washing Machines

Vibration in the lifting rod is typically caused by a bent shaft head, sand ingress into the shaft head, or wear on the shaft head balls.

Solution: Regularly clean the shaft head and inspect it for bending, as well as check the wear condition of both the shaft head and its balls.

The above outlines the causes and solutions for five common failure issues in sand washing machines. During operation, prioritize maintenance and repair to ensure optimal performance. Regular upkeep enhances sand washing efficiency and extends service life.