1、 Low stone removal efficiency

• Possible reasons：

  1. Excessive material flow and insufficient air volume result in insufficient suspension of materials.
  2. Blockage of the stone screen surface or uniform air plate affects the distribution of airflow.
  3. Fan reversal leads to incorrect airflow direction.
  4. The material flow rate is too small, the air volume is too large, the screen surface is uneven, and the material or airflow distribution is uneven.
  5. The reverse airflow velocity is too high, resulting in poor stone drainage.
  6. The transmission components are damaged, resulting in inaccurate motion trajectory.
  7. The surface of the stone sieve is worn or the inclination angle is too large.

• exclusion method：

  1. Adjust the material flow rate and air volume to fully suspend the material.
  2. Clean the stone screen surface and the uniform air plate to ensure smooth airflow.
  3. Check the direction of the fan to ensure its normal operation.
  4. Adjust the material flow and air volume to ensure a smooth screen surface.
  5. Adjust the reverse airflow speed to ensure smooth stone discharge.
  6. Check the transmission components and replace damaged parts in a timely manner.
  7. Replace the worn stone removal screen surface and adjust the inclination angle of the screen surface.

2、 There is too much grain in the stone

• Possible reasons：

  1. The total air volume has decreased, and the reverse airflow velocity in the inspection area is too low.
  2. The material flow rate is too large, the material layer is too thick, the wind resistance is too high, and the automatic grading is not good.
  3. The reverse airflow velocity in the inspection area is too low, resulting in air leakage or blockage of the inspection area sieve holes.
  4. The inclination angle of the stone sieve surface is too small.
  5. 振幅太小。

• exclusion method：

  1. Increase the total air volume and increase the reverse airflow velocity in the inspection area.
  2. Reduce material flow and decrease material layer thickness.
  3. Check and repair the air leakage area, clean the sieve holes in the inspection area.
  4. Adjust the inclination angle of the stone removal screen surface.
  5. Increase the amplitude to improve the stone removal effect.

3、 No stones can be exported

• Possible reasons：

  1. The inclination angle of the stone sieve surface is too large.
  2. The material flow rate is too low, the fan speed is too high, and the total air volume and the reverse airflow velocity in the inspection area are too high.

• exclusion method：

  1. Adjust the inclination angle of the stone removal screen surface.
  2. Adjust the material flow rate and fan speed, reduce the total air volume and the reverse airflow velocity in the inspection area.

4、 Excessive vibration of the body

• Possible reasons：

  1. The installation foundation is not sturdy.
  2. The frequency is too fast.
  3. Bearings and other components are worn and loose.

• exclusion method：

  1. Strengthen the installation foundation.
  2. Adjust the frequency, check for any collision between the screen body and the box body, and correct it.
  3. Check, replace, and tighten components such as bearings.

5、 There are blind spots or vortices on the screen surface

• Possible reasons：

  1. The suspension rod is twisted.
  2. The air deflector is deformed.
  3. The air guide plate is not parallel to the impeller.

• exclusion method：

  1. Correct the twisted suspension rod.
  2. Open the fan door to inspect and calibrate the air guide plate.
  3. Correct the air deflector to be parallel to the impeller.

6、 The temperature rise of the bearing is too high

• Possible reasons：

  1. The bearing has no oil or impurities mixed in.
  2. Improper assembly.

• exclusion method：

  1. Clean the bearings and add oil.
  2. Stop the machine and check the assembly status to ensure correct assembly.