Using a water truck or sprinkler system to regularly water down the haul roads will minimise the amount of dust that becomes airborne when the trucks are operating. To be effective, the spray nozzle needs to be wide open and the spray powerful enough to reach the edges of the road.
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Tips for Using a Dongfeng or Jiefang Water Sprinkler Truck
1. Water Source Requirements:
It is essential to carefully read and follow the operating requirements strictly when using a water sprinkler truck (Dongfeng or Jiefang) to ensure proper usage. When utilizing rivers or ponds as a water source, it is crucial to fully immerse the suction pipe in the water and avoid sucking in stones or too much mud. Typically, a filtering device is installed at the end of the suction pipe to prevent this. Do not remove the filtering device while suctioning water. If the water source is shallow, it is necessary to dig the suction point deeper beforehand to ensure that there are no impurities or air entering. Different water sprinkler trucks require different water pumps. For example, a clean water pump necessitates no impurities in the water, while a turbid water pump requires no stones or excessive mud in the water.
2. Adding Priming Water:
For each water suction with a centrifugal water pump, a certain amount of priming water must be added to the pump. After adding the priming water, the water inlet should be closed. Self-priming water pumps need priming water only the first time they are used and not for subsequent uses.
3. The Water Inlet Pipe must Maintain a Certain Vacuum:
During water suction, the water inlet pipe system must maintain a certain level of vacuum in order to suck water into the tank. The water inlet pipe system must be sealed and reliable, with no damage to the soft hose and no cracks in the hard hose, otherwise, air leakage will occur, resulting in the inability to suck water.
4. Engage the Gear When Parking:
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Whether it is before water suction or before spraying, the power take-off device of the water sprinkler truck must be engaged in gear when parking.
5. Draining Water in Winter:
Before the arrival of winter, the water pump and water inside the pipe should be drained to prevent freezing and cracking.
6. Notes on Spraying Water:
The front nozzle of the water sprinkler truck is positioned low and close to the ground, with a higher spraying pressure, and can be used to rinse the road surface. The rear nozzle is positioned higher (usually one on each side of the back of the water sprinkler truck), with a wider spraying range, and can be used for highway construction and watering. When using the rear nozzle, the front spray pipe should be closed. When using an adjustable spray nozzle, the spraying width can be adjusted according to needs. The wider the spraying width, the less overlap in the middle, and the more uniform the water distribution.
7. Lubrication and Tightening:
During use, the lubrication points of the transmission assembly should be lubricated regularly, and the connecting points should be tightened frequently to ensure normal use.
8. Regular Drainage: