How to solve the problem of insufficient gas production by screw air compressor?
1 selection problem
Many users just don't know the specific gas consumption situation they are producing. They are about the type selection. At this time, the exhaust pressure does not come up, and the rated exhaust pressure is lower than the rated exhaust gas. This can not be checked. At a time, there is a leak point in the pipeline. Close the valve behind the gas tank, if the unit can quickly raise the pressure, open the valve; the pressure drops quickly, and finally at a pressure point, then it can be confirmed that the compressor unit is too small, the unit The amount of exhaust is less than the actual amount of gas produced. Solution: Add a new unit, so that the displacement of the compressor is more than 10-20% of the gas consumption.
2 leaking problem
This is the most likely cause of this failure. You can start the oil-free compressor and stop when the tank has a certain pressure (slightly above atmospheric pressure). Then use your ears to listen to the sound of air leaks at the joints of external pipes, gas supply pipes, check valves, safety valves, pressure switches, etc. If there is a leak, then it is necessary to repair the leaking place.
3 gas production standards
If the user increases the equipment that requires gas, the gas consumption will exceed the gas output of the screw compressor, indicating that the machine is overloaded. At this time, even if it has been producing gas, it can not meet your needs. Maybe you will think that it is not producing enough gas. This kind of case is very common, so please check carefully whether your own gas consumption has increased recently.
4 machine wear
Air compressor yin and yang rotor wear: When there is large wear between the yin and yang rotors and the stator cavity, the internal leakage of the air compressor is very large, and the air pressure opportunity is not loaded.
Air compressor lubricating oil: The price of special oil for screw air compressor is slightly more expensive. Some unscrupulous suppliers provide users with special oil for non-air compressors, which makes the air compressor oil emulsification and cannot form an effective air seal. The efficiency of the air compressor is very low, even without gas. At this time, the operator of the air compressor can hear that the noise of most air compressors is very different between the actual full load and the actual load, mainly because the noise at the suction end is very obvious. When the internal leakage is large, there is noise change at the suction end, and no pressure is generated. This situation can be sure that the air compressor is lazy and does not breathe. Air compressor loading without air pumping is a common air compressor failure. General professional air compressor maintenance personnel can help you solve this problem quickly.
5 air compressor loading does not breathe general reasons and solutions
(1) The intake valve is not open:
When the air compressor is turned on, the internal pressure will be slowly established first. When the pressure reaches 5 Bar (most air compressors are like this, except for special ones), the air intake valve is opened by the solenoid valve control cylinder, and the air compressor takes in air into the loading state. There may be three reasons for the air compressor not to enter the air, solenoid valve (circuit, valve body, pipeline), cylinder (valve or diaphragm, seal, pipeline), intake valve (valve or diaphragm, seal, tube) Road) has failed.
(2) Air compressor dummy loading:
The false load of the air compressor is mainly caused by the failure of the output point of the PLC. The PLC is in the running loading state. Due to the failure of the output point, the solenoid valve signal is not given, and the air intake machine does not operate. Maintenance PLC should be professional air compressor maintenance engineer, non-professionals do not recommend disassembly.
(3) Minimum pressure check valve failure:
The minimum pressure check valve is the easiest to judge whether there is a fault. When the internal pressure is high, but there is no pressure output, it can be judged that the minimum pressure check valve is faulty. The best way to break the minimum pressure check valve is to replace it.
6 air pressure shortage cause
The barometer failed. (90% of practitioners are concerned about 'compressor network')
Oil-water separator, pipeline or air filter deposits are too much and clogged, need to be maintained on time
