Technical standards of pneumatic actuators to follow

Each industry products are belong to its standards, achieve the requirements of the standard product can be applied to various industries. The valve industry product is strictly in accordance with its standard, only meet all aspects of standard, to ensure no fault operation. Today we began to focus on the downside in the industry of pneumatic actuator products. The role of the pneumatic actuator is through an air pressure regulating valve actuators for opening and closing. In the actual operation process still need to each link of technical standard to have a full understanding. Below small make up is simple to introduce a need reach the standard, the structure of the pneumatic actuators, pneumatic device is mainly composed of cylinder, piston, gear shaft, end cover, seals, screws, etc; Complete sets of pneumatic device should also include the opening instructions, limit, solenoid valve, locator, pneumatic components, manual institutions, and signal feedback etc parts. And pneumatic device connected to the valve size shall comply with ISO ( At the bottom) , GB/T and the provisions of GB/T. , with manual mechanism of pneumatic device, in the air supply is interrupted, should use the manual institution for the valve opening and closing operation, facing the handwheel, should the handwheel or handle counterclockwise for valve open, clockwise for the valve to close. , internal and external thread for piston rod end, should have over the spanner wrench. , piston sealing ring should be easy to replace and maintenance. , buffering mechanism of pneumatic device, its buffering mechanism of stroke length can be reference to the provisions of the table. , with adjustable buffering mechanism of pneumatic device, shall have the external cylinder body adjust the institutions of the cushion. , in and out of the air cylinder thread sizes should comply with the MANUR NORM ( Attachment standard) GB / T。 ,GB / T。 And the provisions of the GB/T. Second, on the performance of pneumatic actuator to the standard, the pneumatic device rated output force or moment should comply with the provisions of GB/T and GB/T, under no-load condition, according to provisions of the table to input in the cylinder pressure, its motion should be smooth, no jam and crawl phenomenon. , in. MPa air pressure, pneumatic device in two directions at opening and closing the output torque and thrust, its value should not be less than the value of pneumatic device sign marked, and action should be flexible, does not allow each part appears permanent deformation and other anomalies. , sealing experiment with working pressure, the leak out of the amount of air from one side of their back pressure does not allow more than ( +。 D) cm/min( Standard state) ; Out of the end cover, the output shaft leakage air volume does not allow more than ( +。 d) cm/min。 , strength test. Times working pressure test, and maintain test pressure after min, the cylinder end cover and static sealing parts are not allowed to have leakage and structural deformation. , life times, pneumatic device simulation of valve, in keeping the two directions of output torque or thrust capacity under the condition of opening and closing operation of the opening and closing times shall be not less than ( Rev. - Once closed loop for) 。 , buffering mechanism of pneumatic device, when the piston movement to visit terminal location, impact phenomenon is not allowed. Three, the pneumatic actuators appearance standards, casting the end cover, the end of the cylinder on the flange, casing shall not be cut, cut, porosity, burr, etc. For the surface paint, pneumatic device or chemical treatment layer should level off, smooth, colour and lustre is uniform, no pollution, indentation, and other mechanical damage.