What is the principle of pneumatic actuators

What is the principle of pneumatic actuators?




for the principle, we must first understand how the internal structure of pneumatic actuators. Major structure of the pneumatic actuator usually consists of cylinder, piston, tooth
axles, end cover, seals, screws, etc; Complete sets of pneumatic device should also include the opening instructions, limit, solenoid valve, the locator, pneumatic components,
, manual institutions, and signal feedback etc parts.
when the pneumatic actuators work, when the compressed gas from the pipe mouth into the pneumatic actuator, gas drive two piston within the cylinder to
on both ends of the movement, the rack on the piston driven gear on the axis of rotation counterclockwise rotation 90 °, the valve is in open state. At the same time to enter
pneumatic actuator gas may also be exported from the other end of the nozzle.
on the contrary, when the compressed air from export mouth into the pneumatic actuator, to middle high pressure gas to promote two-way piston movement, this time the teeth on the piston article
will clockwise (90 °, back in the opposite direction when the valve is closed, into the gas and oil from the air inlet on just now.
for standard transmission principle, according to customer demand, pneumatic actuators can be device with standard instead of transmission principle, namely choose standard axis along
clockwise rotation to open valve, counterclockwise rotation to close the valve. The single function ( Spring return type) Pneumatic actuator tube tip for air inlet, A tube tip
to vent (B B pipe nozzle should be installed muffler) 。 When A pipe nozzle inlet to open valve, expired on close valve spring force.