The working environment of dust 

suppression sprayers in coal yards 

is generally harsh.After ten to fifteen 

months of use,the equipment will 

be covered by a thick layer of dust.

Therefore,regular maintenance and 

inspection of dust suppression sprayers 

are crucial to reduce the probability 

of equipment failure and extend their 

service life.

The maintenance and daily inspection of coal yard dust 

sprayers should include the following items:

1.Check V-Belt Tension:Inspect if the V-belt is slack.If there 

is slack, adjust it according to the dust sprayer's manual.

2.Lubrication of Plunger Pump:Frequently check if the 

lubricating oil and plunger grease in the plunger pump 

are sufficient.Add oil if necessary.

3.Inspect Spray Tube and Joints:Examine if the spray tube 

is broken or if the spray tube joint gasket is damaged. 

Replace if broken or damaged.

4.Lubricate and Clean:Lubricate each lubrication point,

keep them clean,and promptly remove sludge.

5.Electrical Components:Do not disassemble electrical 

appliances,avoid colliding with the water nozzle,ensure 

the water level is not lower than the height of the pump,

and do not disassemble the equipment yourself.

6.Antifreeze Measures:When the ambient temperature is 

below 0°C,take measures to prevent the circulating water 

system from freezing and cracking.

7.Prevent Debris Entry:Ensure mud,sand,and debris do 

not enter the water tank to avoid blocking pipes and 

nozzles or damaging the plunger pump.If the nozzle is 

blocked or leaks,shut down the pump to clean and 

remove the blockage.

8.Drain Water After Use:After operating the dust sprayer,

drain the water in the machine,especially in low-

temperature areas prone to freezing.Thoroughly drain 

the water when not in use to prevent freezing and 

cracking of equipment and pipes.

9.Nozzle Condition:Check the condition of the nozzle 

for wear or leaks.

10.Inspect Accessories:Verify the normal operation and 

condition of the pressure gauge,control valve,and other 

accessories.

11.Release Pressure:After use,drain the water in the 

pipeline and equipment,and loosen the pressure 

regulating handle of the control valve.

Regular maintenance and proper inspection can 

significantly enhance the longevity and reliability 

of dust suppression sprayers in coal yards.