Pneumatic actuators have the above characteristics and principles

The working principle of pneumatic actuator when the compressed air from A tube tip into the pneumatic actuators, push double piston in gas (on both ends Cylinder head side) Linear motion, the pistons on the rack drive gear on the axis of rotation counterclockwise rotation degrees, the valve is open. The pneumatic valve at the ends of the gas tube tip discharge with B. Conversely, when compressed air from the ends of the tube tip into the pneumatic actuators B, gas drive double plug to the middle line movement, the rack on the piston driven gear on the axis of rotation, clockwise rotation degrees valve is closed. The pneumatic actuator with A pipe in the middle of the gas nozzle. The above for standard transmission principle. Pneumatic actuators can be device according to user requirements, in contrast to the standard transmission principle, namely choose standard shaft rotate clockwise to open valve, counterclockwise rotation to close the valve. The single function ( Spring return type) Pneumatic actuator tube tip for air inlet, A tube to vent (B B pipe nozzle should be installed muffler) 。 When A pipe nozzle inlet to open valve, expired on close valve spring force. The characteristics of the pneumatic actuator compact double piston gear, rack structure, meshing precision, high efficiency, output torque is constant. Aluminum alloy cylinder block, piston and end cover, and the lightest weight compared with the specification of the structure of the actuator. For the extrusion of aluminum alloy cylinder body, and the hard anodic oxidation treatment, the inner surface quality of a material is solid, strength, high hardness. Low friction material of sliding bearing is adopted to avoid the direct contact with each other between the metal, low friction coefficient, flexible rotation, long service life. Pneumatic actuators and valve installation, connection size according to the international standard ISO, DIN, and VDI/VDE design, are interchangeable with ordinary pneumatic actuators. Air hole in accordance with NAMUR standard. Pneumatic hole bottom of shaft assembly ( Meet ISO standard) Double square, facilitate with linear or ° Angle valve installation of square bar. The top and at the top of the hole of the output shaft in accordance with NAMUR standard. Adjusting screw can be adjusted at the ends of the valve opening Angle. The same specifications of a double-acting and single acting ( Spring return) 。 Can choose direction, according to the requirements of the valve clockwise or counterclockwise. According to user need to install the solenoid valve, the locator, The opening instructions) , letter opener, all kinds of limit switch and the manual operation device.