Method for adjusting the size of the discharge port of the pe crusher

The discharge port size of a PE (Persistent) crusher, which is a type of jaw crusher, determines the size of the material that can exit the crusher. Adjusting the size of the discharge port is crucial for controlling the product size and optimizing the crushing process. Here's a general method for adjusting the size of the discharge port in a PE crusher:

1. Safety Precautions:

- Ensure all safety protocols are followed before starting any maintenance or adjustment work on the crusher.

- Lockout/tagout the power source to prevent accidental startup during maintenance.

- Use personal protective equipment (PPE) such as safety glasses, gloves, and ear protection.

2. Accessing the Adjustment Assembly:

- Open the crusher's access doors or remove the protective guards to expose the adjustment assembly.

- The adjustment assembly typically consists of an adjusting nut, a tension spring, and an adjusting screw or shim plate.

3. Understanding the Adjustment Mechanism:

- Identify how the adjustment mechanism works in your specific crusher model. In some crushers, the adjusting nut moves a tension spring that controls the movement of the jaw plate. In others, an adjusting screw or shim plate is used to change the position of the fixed jaw plate.

4. Removing the Adjusting Nut or Plate:

- Loosen the adjusting nut or unscrew the adjusting screw to allow for movement of the fixed jaw plate.

- In some cases, you may need to remove the tension spring to have better access to the adjustment assembly.

5. Adding or Removing Shims:

- If your crusher uses shims, add or remove shims between the fixed jaw plate and the crusher frame to adjust the discharge port size.

- The shims are placed between the frame and the fixed jaw plate and can be of different thicknesses to vary the gap size.

6. Checking the Jaw Plates:

- Ensure that the jaw plates are not worn or damaged. Worn plates can affect the crusher's performance and the accuracy of the discharge port size.

- If the plates are worn, they may need to be replaced before making any adjustments.

7. Making the Adjustment:

- Carefully adjust the size of the discharge port by adding or removing shims as needed.

- Use a dial indicator or a feeler gauge to measure the gap between the moving and fixed jaw plates to ensure it is within the desired range.

8. Reassembly and Tightening:

- Once the desired discharge port size is achieved, reassemble the adjustment assembly by tightening the adjusting nut or screw.

- Make sure that the tension spring is properly positioned and tensioned if it was removed earlier.

9. Testing and Verification:

- Test the crusher with a sample load to ensure that the discharge port is functioning correctly and that the desired size of the crushed material is being produced.

- Monitor the crusher's performance and make additional adjustments if necessary.

10. Documentation:

- Document the adjustment process, including the number of shims added or removed, the final gap size, and any other relevant information.

- Keep a record of the adjustment for future reference and maintenance purposes.

Always refer to the crusher's operator's manual or contact the manufacturer's support team for specific instructions tailored to your crusher model, as the adjustment process can vary slightly between different crushers.