Checklist for Asphalt Mixing Plant Burner

The asphalt mixing plant burner is the key component of stone drying and heating. The current market has many varieties of fuel, different quality standards and complicated fuel sources. Under these conditions, whether the asphalt mixing plant burner can work well is the most basic requirement of the majority of users. So, how to adjust the asphalt mixing plant burner to the best condition? The following 7 parts should be noted in the daily inspection and maintenance.

Pressure regulating valve of asphalt mixing plant burner

Check the fuel regulator or pressure reducing valve regularly to make sure that the surface of the nut on the adjustable bolt is clean and removable. If the surface of the screw or nut is too dirty or rusty, the regulator valve needs to be repaired or replaced.

Fuel Pump of asphalt mixing plant burner

Check the fuel pump periodically to determine if the seals are intact and the internal pressure is stable. Replace seals that are broken or leaking. When using hot oil, check that all oil pipes are well insulated.

The filter of asphalt mixing plant burner

The filter installed between the tank and the pump must be cleaned regularly and checked for excessive wear to ensure that fuel reaches the pump from the tank smoothly and to reduce the likelihood of potential component failure. The “Y” filter on the burner should be cleaned regularly. Especially when using heavy oil or residual oil, it will prevent the injector nozzles and valves from clogging. When in working condition, check the pressure gauge on the burner to see if it is within the normal range.

Pressure device of asphalt mixing plant burner

For burners that require compressed air, check the pressure device to see if the required pressure is generated in the burner, and clean all filters on the supply line and check if there are any leaks in the line.

The blower of asphalt mixing plant burner

Check that the inlet protection device on the combustion and atomization air blowers is properly installed. 

Check that the blower housing is not damaged and leaking. 

Observe the operation of the blades. 

When the noise is too large or vibration, adjust the blades to eliminate the noise. 

For pulley-driven blowers, regularly lubricate the bearings and tense the belt to make sure the blower can produce the rated pressure. Clean and lubricate the air valve coupling to see if the operation is smooth, and replace the parts when there are obstacles to operation.

Determine whether the air pressure meets the working requirements. Too low air pressure will cause tempering, resulting in overheating of the guide plate at the front of the drum and the paddle plate in the combustion area. Wind pressure too high will make the current too high, resulting in high temperature of the bag or even scorched.

Oil injection nozzle of asphalt mixing plant burner

The oil injection nozzle should be cleaned regularly. Check the ignition electrode spark gap (about 3mm).

The flame detector of asphalt mixing plant burner

Clean the flame detector (electric eye) often. Make sure the position is correctly installed and the temperature is appropriate. Incorrect position and high temperature will cause unstable photoelectric signal and even fire breakage.

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