How much do you know about the classification of hydraulic pneumatic valve

hydraulic pneumatic valve is a kind of operation automation components with pressure oil, it is with pressure oil pressure pneumatic valve control, usually with electromagnetic pressure pneumatic valve combination, can be used for remote control of hydropower station, oil, gas, water piping system on and off.
the following big blue hydraulic motor to test your understanding of the role and classification of hydraulic pneumatic valve?
the role of hydraulic pneumatic valve, used to reduce and stabilize a branch of the oil pressure in the system, often used for clamping, control and lubrication oil. Have, type of moving into straight-pilot, and superposition.
classified by control method: manual, electric and hydraulic control.
classified by function: flow pneumatic valve ( Throttling pneumatic valve, pneumatic valve, shunt collector of speed pneumatic valve, pneumatic valve (pressure Overflow pneumatic valve, relief valve, pneumatic valve order, unloading direction of pneumatic valve, pneumatic valve, Electromagnetic reversing pneumatic valve, pneumatic valve, manual directional one-way pneumatic valve, hydraulic control one-way valve.
according to the installation points: plate type pneumatic valve stack, tube type pneumatic valve, pneumatic valve, screw instrumentation pneumatic valve, pneumatic valve plate.
press control mode: manual pneumatic valve, pneumatic valve, electric pneumatic motor valve, hydraulic pneumatic valve, electric hydraulic pneumatic valve, etc.

, direction control is divided into one-way pneumatic valve according to the use and the reversing pneumatic valve.
one-way pneumatic valve: only allow fluid unidirectional connected in the pipeline, the reverse is cut off.
the reversing pneumatic valve: change between different line and broken relationships.
(1) according to the work location in the pneumatic valve pneumatic valve core number two, three, etc. ;
(2) according to the control of the channel number points, two-way, tee, four-way, five-way, etc. ;
(3) according to break up the driving mode of pneumatic valve core movement, motor, electric, hydraulic, etc.

, pressure control is divided into the overflow according to the use of pneumatic valve, pneumatic vacuum pneumatic valve and sequence valve. Pneumatic valve:
(1) the overflow to control the hydraulic system to be in when setting pressure constant state. For the overflow of the overload protection pneumatic valve pneumatic valve called security. When the system fails, the pressure to limit may cause damage, the pneumatic valve will open and the overflow mouth, to ensure the security of the system. Pneumatic valve:
(2) the reduced pressure to control the stability of the branch circuit be lower than the main loop hydraulic pressure.
the reduced pressure pneumatic valve according to its function of the control of pressure, and can be divided into fixed value reduced pressure pneumatic valve ( Output pressure for a constant value, differential vacuum pneumatic valve ( The input and output pressure difference for fixed value and constant ratio reduced pressure pneumatic valve ( Keep certain proportion between the input and output pressure. Pneumatic valve:
(3) in order to make a actuators ( Such as hydraulic cylinder, hydraulic motor action later, again in order to make other actuators. Oil pump pressure to drive the hydraulic cylinder movement, at the same time through A sequence of the pneumatic valve inlet on the area of A, when the hydraulic cylinder motion completely into pressure, role in the area of A upward thrust is greater than the spring after the setting of the pneumatic valve core rising oil inlet and oil outlet are interlinked, make the hydraulic cylinder motion.

, flow control using the adjustment between the pneumatic valve core and valve throttling mouth area and its local resistance on flow adjustment, so as to control the movement speed of executive element, the.
flow control pneumatic valve is divided into categories: according to the use of
1) pneumatic valve throttle: after setting throttling mouth area, little change can make the load pressure uniformity and movement request is not high movement speed of executive element, the basically remained stable.
(2) speed pneumatic valve: when load pressure changes can keep the import and export of pneumatic valve throttle differential pressure as a fixed value. At the throttle mouth area of setting later, no matter how change, load stress can keep through the throttle control pneumatic valve pneumatic valve flow rate constant, so that the movement speed of executive element, the stable.
3. Tap pneumatic valve: no matter the load size, can make the same oil source of two actuators, be equal to the flow for the amount of shunt pneumatic valve or synchronous pneumatic valve; For the proportion of shunt proportional distribution flow rate from pneumatic valve.
(4) collecting pneumatic valve: role, in contrast to the shunt pneumatic valve, pneumatic valve that flow into the collector flow proportional distribution.
5) shunt collector pneumatic valve: both shunt pneumatic valve and collecting pneumatic valve two functions.