Maintenance and maintenance of air compressor

Air compressor can operate correctly and has a long service life, excellent maintenance is important, so we must grasp the air compressor maintenance methods, master how to repair common problems. Maintenance of the air compressor must do a good job in basic maintenance and maintenance of key parts, when the oil pump fails. The gas pressure is not enough. Heat pipe radiator blockage and other problems to immediately find common fault reason, deal with common fault problems. Take a look at it with me below.

What is the air compressor maintenance method

1. basic maintenance

1. The disassembly and replacement time of air compressor refrigeration grease lies in the application of natural environment. Ambient humidity. Whether there is pH vapor in the floating dust and air. The newly purchased air compressor must be replaced with new oil for 500 hours after the initial operation, and then updated every 4000 hours according to the normal oil change cycle time. Equipment with less than 4000 hours of annual operation should be replaced every year.

2. The oil filter of the machine must be replaced for 300-500 hours at the first startup, 2000 hours at the second application, and then every 2000 hours at all normal times.

3. Check the tightness of the transmission belt every 2000 hours of operation of the equipment. If the transmission belt is soft, adjust it until the transmission belt is tight. In order to better maintain the transmission belt, it is necessary to avoid damage to the transmission belt due to oil pollution in all processes.

Maintenance of key parts of 2.

1. Air inlet filter element

the air filter element of the air compressor is the core component to filter out the air dust and dirt, because the vast majority of the air compressor only allows the particles within 15u to be filtered out. If the empty filter element is blocked and damaged, many fine particles exceeding 15u will enter the air compressor car to circulate, which will not only greatly shorten the oil filter element. The service life of the core separated from the oil will continue to cause a lot of fine particles to directly enter the rolling bearing cavity, accelerate the damage of the rolling bearing, expand the spacing of the motor rotor, reduce the high efficiency, and even cause the motor rotor to bite.

It is best to maintain the empty filter element once a week. During maintenance, twist off the screw cap, remove the empty filter element, compress it with 0.2-0.4Mpa air, blow out the floating dust particles on the outer surface of the empty filter element from the inner wall of the empty filter element, and wipe the dirt on the inner cavity of the air filter element shell with a clean towel. When reinstalling the empty filter element, pay attention to the sealing ring on the front surface of the empty filter element and the inner hole of the air filter element shell.

2. Oil filter

it is forbidden to use the oil filter element beyond the time limit, otherwise because the filter element is seriously blocked and the pressure difference exceeds the limit of the intake valve, the intake valve will automatically open, and a lot of dirt. Particulate matter will immediately cause oil to open the extruder screw server, causing serious harm. It is proposed to replace new filter elements every 1500-2000 hours.

3. Oil fine separation equipment

the oil fine separation equipment is a component that compresses and separates the screw grease of the extruder from the air. Under normal operation, the service life of the oil fine separation equipment is about 3000 hours, but the quality of the grease and the filtration precision of the gas are very harmful to its service life. The fine oil separation equipment must be replaced after it is written off or the pressure difference between the front, rear, left and right exceeds 0.12Mpa. Otherwise, the motor will be loaded and the oil fine separation equipment will be damaged.

4. Cooling tower cleaning

in order to eliminate the dust on the heat exhaust surface, the blowing cover of the cooling tower on the fan support frame shall be opened for every 2000h of operation of the air compressor, and the cooling tower shall be purged with a dust blowing cleaner until the dust on the heat exhaust surface is purged and tidy. If the stains on the heat removal surface are serious and cannot be purged and cleaned, the cooling tower can be removed, the oil in the cooling tower can be poured out, and the four import and export trades can be closed to prevent dirt from entering, and then the dust or tap water on both sides can be blown off by air compression for cleaning.

5. Discharge condensate

the moisture in the air is likely to solidify in the oil and gas separator tank, especially in humid weather, so the condensed water should be discharged every time. When the stone archway, pay attention to the equipment should be turned off. There is no working pressure in the tank of oil and gas separator. Adequate refrigeration. Condensate water shall be carried out after obtaining sufficient deposition.

How to repair the common problems of air compressor

1. The heat pipe radiator is blocked

when there is a lot of dust in the surrounding environment of the air compressor, long-term operation will cause a layer of smoke or grease to adhere to the surface of the heat pipe radiator, and its internal air-conditioning copper pipe is also easily blocked by oil accumulation, thus endangering the actual effect of heat exhaust. At this time, the heat pipe radiator needs to be cleaned up immediately.

2. Failure of oil pump

there is a short oil pump between the oil supply pump and the refrigeration compressor. When the oil pump cannot be turned on, the temperature of the refrigeration compressor will rise rapidly after starting, and it will shut down automatically in about 1 minute. In case of this kind of situation, open the inspection port at the bottom of the air compressor, remove the oil pump, and gently rotate the valve seat with your fingers to see if it can be promoted back and forth, left and right, and if it can be easily calibrated. If it is difficult to turn or return, the broken oil pump needs to be further disintegrated. If the seat or valve hole is greasy, use water sandpaper to polish until it can roll easily. If the torsion spring is broken or there is dirt stuck, it will also endanger the valve seat fitness exercise. At this time, the torsion spring needs to be replaced or cleaned up.

3. Gas pressure is not enough

when the diesel engine is running and the air compressor is pumping air into the air tank of the air compressor, the pressure gauge indicates that the standard air pressure cannot reach the development working pressure value. There are many reasons for this situation, most likely due:

(1) The pressure gauge fails. At this time, only the pressure gauge needs to be removed and replaced.

(2) The transmission system between the air compressor and the automobile engine The transmission belt is too loose and deviates, or the pipe between the air compressor and the air compressor air tank is cracked or the connector leaks steam.

(3) Oil and gas separator. The pipe or air filter element is clogged with too much accumulation.

(4) The air compressor automatic exhaust valve plate is not tightly sealed, the torsion spring is too soft or broken, and the anchor bolts of the air compressor cylinder head are loose. The sand hole and cylinder head gasket are damaged and leak steam.

(5) The air compressor cylinder liner and the piston rod and the engine piston friction is too much to leak steam.