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As a manufacturer of cement tanker trailers in China, sometimes we receive feedback from clients about the tank being prone to blockages in the discharge pipeline, often caused by improper usage. We offer an in-depth guide on handling blockages in bulk cement truck trailers to address this issue.
1. Pre-loading Preparation
Clear any ash or cement slagging from the tank and discharge pipeline. Ensure pipelines and valves operate smoothly without obstructions or air leaks and that all connections are secure.
2. De-pressurize Before Loading
Open the exhaust valve to release residual air pressure in the tank before using the charging port.
3. Monitor the Load
When loading, turn on the material level switch. Cease loading as soon as the material level sensor emits a full-capacity alert.
4. Seal the Tank
After loading, clean any cement residue from the charging port, secure its cover, and lock it in place.
5. Prepare for Unloading
Park the vehicle on a flat unloading site. Attach the unloading pipe, ensuring the butterfly and pressure relief valves are closed. The secondary air pipe should also be opened. Connect the compressed air, making sure the air compressor starts without a load.
6. Pressurize Safely
Before increasing tank pressure, verify the unloading valve is closed. Adjust the secondary air nozzle valve to control the air-to-cement ratio only after reaching the required discharge pressure.
7. Monitor Pressure During Unloading
Watch the pressure gauge closely. If a sudden pressure spike occurs, indicating a blockage, cease air supply, release compressed gas, and then the blockage should be removed.
8. Assign a Dedicated Operator
Have a dedicated individual oversee the air compressor and prohibit unauthorized personnel from operating it. Maintain a consistent engine speed during pressurized discharge.
9. De-pressurize Post Unloading
Release any remaining air from the tank after unloading, and close all valves. The tank should be pressure-free when the vehicle is in motion.
10. Weather Considerations
Refrain from loading or unloading in rainy conditions. Regularly check the feeding port cover for a tight seal, ensuring no moisture or humid air enters the tank.
11. Safety During Maintenance
Switch off the engine, apply the hand brake, and securely wedge the wheels when working under the vehicle.
12. Qualified Testing After Repairs
Only qualified personnel should test-drive a repaired vehicle. It should be void of any passengers or cargo. If road tests are necessary, use a testing license issued by the traffic authority.
13. Safe Parking on Slopes
When parked downhill, engage the reverse gear; when uphill, engage the first gear. Use triangular wooden wedges to chock the tires securely.
14. Regular Equipment Checks
Periodically inspect all equipment, especially the hoses, valves, and connectors for wear and tear. Replace any components showing signs of deterioration to ensure the smooth operation of the tanker.
15. Training and Updates
Ensure all operators and crew undergo regular training sessions and are updated on any modifications or new operational procedures for the cement tanker trailer. Knowledge empowerment is key to preventing issues and ensuring safe operations.
By following these steps, you’ll optimize the operation and longevity of your cement tanker trailer. Always prioritize safety and regular maintenance checks.
