螺桿式空壓機(jī)進(jìn)氣閥的工作過程是：啟動.加載.卸載.容調(diào).停機(jī)

（1）啟動。電機(jī)啟動，主機(jī)開始運(yùn)轉(zhuǎn)，進(jìn)氣閥關(guān)閉狀態(tài)閥芯上的小孔進(jìn)氣，經(jīng)過壓縮的油氣進(jìn)入油氣桶，系統(tǒng)壓力逐漸上升。
（2）加載。電機(jī)是三角轉(zhuǎn)換，控制系統(tǒng)（壓力開關(guān)）會比較系統(tǒng)的實際壓力與設(shè)定壓力，當(dāng)系統(tǒng)壓力低于壓力開關(guān)設(shè)定下限壓力時，壓力開關(guān)動作使加載電磁閥（三向電磁閥）加電三向電磁閥開啟，向進(jìn)氣門伺服汽缸供氣推動控制氣缸打開蝶閥，進(jìn)氣閥全開吸氣；經(jīng)由電磁閥的壓力同時關(guān)閉泄放閥，機(jī)器不再放空，罐內(nèi)壓力持續(xù)上升至向外供氣。
（3）卸載。當(dāng)壓力上升到壓差開關(guān)上限壓力時，壓差開關(guān)發(fā)出一個電信號給三向電磁閥，電磁閥關(guān)閉停止向進(jìn)氣門伺服氣缸供氣，控制氣缸不受壓則蝶閥關(guān)閉維持小孔進(jìn)氣，此時受配重控制止回閥能及時迅速的緊密關(guān)閉，同時泄放閥打開釋放油氣桶內(nèi)壓力至基本油壓。空壓機(jī)處于空載運(yùn)行，在加載電磁閥連續(xù)失電20min后，系統(tǒng)進(jìn)入空車過久停車狀態(tài)。
（4）容調(diào)。空壓機(jī)加載過程中為減少空壓機(jī)的空重負(fù)荷次數(shù)，安裝有反比例閥，當(dāng)機(jī)組壓力達(dá)到壓力開關(guān)上限前反比例閥提前動作，減少向伺服汽缸的供氣量，進(jìn)氣閥伺服氣缸閥桿推力減少，在彈簧力的作用下閥桿回縮，當(dāng)彈簧力與氣缸的氣體推力平衡時，閥桿處于半開狀態(tài)，進(jìn)氣量減少實現(xiàn)空壓機(jī)的容量調(diào)節(jié)。
（5）停機(jī)。停機(jī)信號來自空車過久或系統(tǒng)壓力長時間處于壓力上限，電機(jī)停止，主機(jī)停轉(zhuǎn)不再吸氣，進(jìn)氣閥的內(nèi)部止回閥迅速關(guān)閉確保沒有停機(jī)吐油的現(xiàn)象，泄放閥持續(xù)放空至外部大氣壓力。

The working process of screw type air compressor intake valve is: start. Loading. Unloadingcapacity adjusting. Stop

(1) start. The motor is started, the engine starts to revolve, close the inlet orifice state valve on the inlet valve, compressed gas into the oil gas barrel, system pressure gradually increased.

(2) loading. The motor is delta conversion, control system (pressure switch) will be the actual pressure system and the set pressure, when the system pressure below the set pressureswitch limit pressure, the pressure switch to load the electromagnetic valve (three to thepower of three solenoid valve) to the solenoid valve to open, push the control cylinder opens the valve to the valve

(3) unloading. When the pressure is increased to the pressure switch upper limit pressure,differential pressure switch sends a signal to the three to the solenoid valve, electromagneticvalve is closed to stop the air intake valve servo, control cylinder compression is not closing butterfly valve to maintain 
the inlet orifice, the tightly closed weight control check valve can be quickly, at the same time release discharge valve is opened to release the pressure in the oil gas barrel to basicoil. Air compressor 
unload operation, continuous loss of power 20min in the loading of electromagnetic valve,the system into the empty parking state too long.

(4) a capacity adjusting. In order to reduce the number of empty and load of the air compressor air 
compressor loading process, equipped with reverse proportional valve, when the unitpressure reaches the pressure switch cap of inverse proportion valve early action, reduce to the gas supply servo cylinder, intake valve servo cylinder valve stem thrust reduction, in thespring under the action of force stem retraction, gas thrust balance when the spring forceand the cylinder, the valve stem is half open state, the intake to reduce the amount of air compressor capacity control implementation.

(5) stop. Stop signal from the empty too long or system pressure long time in the upper pressure limit, the motor stops, the host stops no longer inspiratory, internal valve check valve closed 
quickly to ensure no stop spit oil phenomenon, the discharge valve for venting to the external atmospheric pressure.