Do you know about the cylinder in the pneumatic valve

About the basic structure of the cylinder, pneumatic actuators, using compressed air as the power, driving mechanism as a straight line, oscillation and rotation motion components. Cylinder can be divided into the single-acting cylinder and double-acting cylinder 1, single-acting cylinder, piston only on one side of the air supply, air pressure forces the pistons to generate thrust, return by spring or self-respect. 2, double-acting cylinder, cylinder piston wind pressure on both sides, to achieve the forward or backward movement. Cylinder cushion cylinder also has a problem, if you don't use the buffer device, when the piston moves to the terminal, in particular, long stroke, the speed of the cylinder, piston impact will be very big, the motion of the end cover is easy damaged parts, shorten the service life of cylinder. How to solve the cylinder cushion? 1, rubber buffer ( The ends of the piston rod set cushion) Note: a. Buffering capacity and fixed the immutable, buffering capacity is small, more for small cylinder, moving to prevent noise. b。 Need to pay attention to the rubber aging caused by deformation, the phenomenon such as peeling off. 2 hydraulic buffer: installed in the front cylinder hydraulic buffer. Features: small power energy to the wide range of power without adjustment, can realize energy absorption. 3, air cushion ( Through the piston movement, the buffer set and sealing ring joint action in a side to form a closed chamber/buffer cavity, to implement the buffer. ) Buffer cavity gas can only through the buffer valve. When the buffer valve opening is very small, the pressure in the cavity is rapidly rising, the reaction pressure on the piston, so that the piston to slow down, until the stop. Note: a. By adjusting the opening of the buffer valve, adjustable buffering capacity. The greater the opening is smaller, the buffer force. b。 Use a cylinder when the back pressure and realize buffer. Cylinder back pressure is small. Buffering capacity will be smaller. When use, must pay attention to the load rate and the cylinder speed control method.