Uneven spreading of asphalt distributors is an inevitable problem in the process of using asphalt distributors. For this reason, our professional manufacturer of Chengli highway maintenance vehicles specially publishes the reasons and solutions for this problem as follows, so as to facilitate car buyers in When such problems are encountered, they can be solved in time to relieve everyone's troubles in using the car.
1. The main reasons for uneven distribution of asphalt distributors
1. Check whether the asphalt nozzle is loose or blocked;
2. The position of the asphalt nozzle is not uniform;
3. The speed is too fast or too slow;
4. The asphalt viscosity is too large;
5. The height of the spray pipe from the ground is too high or too low.
The solution to the uneven distribution of the asphalt distributor:
1. Clean up all asphalt nozzles to check whether there are damaged nozzles and replace them in time;
2. Adjust all asphalt nozzles to the same position;
3. Reduce the speed of the vehicle to control the one-size-fits-all spray;
4. The height of the spray pipe from the ground can be adjusted and closed-loop control.
Since the spraying fan angle will be affected by factors such as vehicle speed, asphalt type, temperature, viscosity, etc., it is best to determine the ground clearance based on construction experience, and adjust it based on this: if the spraying pipe is too high off the ground, it will reduce asphalt spraying. The impact force will weaken the effect of "impact-splash-homogenization"; if the height of the spraying pipe is too low, the overlap of the asphalt spraying fan will be reduced, and the height of the spraying pipe should be adjusted according to the actual situation to improve the asphalt spraying effect.
5. Improve asphalt properties
When the asphalt viscosity is large, the asphalt flow resistance is large, the injection forming is small, and the overlap number is reduced. In order to overcome these shortcomings, the general practice is to increase the diameter of the nozzle, but this will inevitably reduce the jet velocity, weaken the "impact-splash-homogenization" effect, and make the lateral distribution uneven. In order to improve the performance of asphalt construction technology, the characteristics of asphalt should be improved.
2 Heating operation method of asphalt distributor
.Turn on the power of the main car and the total power of the control computer as shown (above)
2. Start the gas-oil generator as shown (above)
3. Open the generator damper → open the starter lock‚ → close the damper → after the voltage is stabilized, open the relay switch, and the heat transfer oil pump behind will turn up.
4. When the set temperature is set to the desired temperature on the computer screen, turn on the burner, and then the burner will work within 20 seconds.
5. After heating up to the required temperature, turn off the burner, let the heat transfer oil pump circulate for 5-10 minutes, let the temperature of the heat transfer oil equalize, and then turn off the gasoline generator, and the spraying operation can be started.
6. Heating specification: temperature of emulsified asphalt (50℃-70℃), base asphalt (150℃-180℃), SBC modified asphalt (180℃-200℃).
When heating asphalt, pay attention to the following:
1. It is absolutely forbidden to use the burner and rotate the heat transfer oil pump when the sprayer is running.
2. After the burner is ignited, the operator is not allowed to leave the sprayer to prevent the burner from turning off by itself.
3. If the burner goes out by itself, it is not allowed to ignite immediately, and it must be stopped for 1 to 2 minutes.
4. Due to the low power of the burner of the sprayer, it can only be used for heat preservation and a small amount of use.
5. The allowable temperature of heat transfer oil is less than or equal to 250℃. Check whether the capacity of heat transfer oil is lacking every half month.
6. When the asphalt liquid level in the tank is lower than the combustion chamber, it cannot be used in general.