The working principle of pneumatic control valve < / div >

electric conversion components converting the electrical signal to pneumatic signal, the electrical signal input control pneumatic output. The most commonly used electric - Qi transformation components is solenoid pneumatic valve ( Solenoidactuatedvalves) 。 Solenoid pneumatic valve is both the electric control part and the aerodynamic performance of the part of the interface, and air supply system interface. Solenoid pneumatic valve take orders to release, stop or change the flow of compressed air, the electricity - Pneumatic control, can realize the function of pneumatic valve are: the direction of the aerodynamic performance of the component motion control, ON/OFF switch quantity control, OR/NOT/AND logical manipulation. In electromagnetic pneumatic valve in the family, the most important thing is that the electromagnetic control reversing pneumatic valve ( Solenoidactuateddirectionalcontrolvalves) 。 Electromagnetic manipulation of the reversing operation principle of the pneumatic valve
in the pneumatic circuit, electromagnetic control reversing the effect of the pneumatic valve is to control air channel of communication, break or change the direction of the flow of compressed air. First operation principle is the effect of the electromagnetic force generated by electromagnetic coil propulsion pneumatic valve core switch, achieve airflow reversing. According to the electromagnetic control part is different with respect to the manner of the reversing pneumatic valve propulsion, can be divided into direct acting solenoid pneumatic valve and pilot operated solenoid pneumatic valve. Direct acting solenoid pneumatic valve directly using the electromagnetic propulsion pneumatic reversing valve core, while the guiding type reversing pneumatic valve using the electromagnetic pilot pneumatic valve output of pilot pressure pneumatic reversing valve core.

the picture above shows that l ( Three way two) Straight moving type electromagnetic air valve ( Often break type) Structure of a brief profile and work principle. Coil electricity, produces the electromagnetic static iron core, pneumatic valve core has been moving up the electromagnetic effect, gasket is raised, 1, 2, connect, 2, 3, disconnect, pneumatic valve inlet, can control a cylinder. When power outage, the pneumatic valve core on the effect of the spring force is restorable, namely 1, 2, 2, 3, pneumatic valve in exhaust conditions.

the picture above shows that 5/2 ( Two five road) Straight moving type electromagnetic air valve ( Often break type) Structure of a brief profile and work principle. Starting condition, 1, 2 inlet; 4, 5 and exhaust; coil electricity, produces the electromagnetic static iron core, make the forerunner pneumatic valve action, compressed air through gas path into the pneumatic valve pilot piston makes the piston starts, at the center of the piston, sealing surface open channel, 1, 4 intake, 2, 3 exhaust; when the power is, the forerunner of pneumatic valve under the effect of spring reset, return to original state.
the function of the pneumatic valve: ( 函数)
menu of pneumatic valve and shown its electricity - The complexity of qi transformation. The function of the pneumatic valve by two Numbers show that M and N, called M road N a solenoid pneumatic valve, 'N' indicates that the reversing switch position of the pneumatic valve, also shows that the condition of pneumatic valve. Pneumatic valve position number is the value of N, such as two pneumatic valve has two bearing selection when there are two conditions, the three pneumatic valve has three bearing selection that there are three kinds of different conditions. 'M' show that pneumatic valve external interface pathways, including air inlet, the outlet and the vent, the number of the channel is the value of M, such as two-way pneumatic valve, three-way pneumatic valve, etc. Figure 4. 1 a example of the pneumatic valve for 3/2 direct acting solenoid pneumatic valve, pronounced 'three way two pneumatic valve', indicates that the pneumatic valve has two, namely, 'tong' and 'off' status, there are three port, respectively 1: air intake, 2: the outlet, 3: vent.