BACK PRESSURE PREVENTION DEVICE OF AIR PRESS SYSTEM

摘要

The present invention relates to a back pressure backflow prevention device of a pneumatic system, and is intended to exhibit the effect of improving the reliability of the pneumatic system by preventing malfunction from back pressure and selectively operating only when normal pressure is supplied. In the present invention for realizing this, a damper connector 11 connected by a cylinder 20 on the side of the damper stopper 21 and a pneumatic flow passage 22 is configured on one side of the main body housing 10, and the main body housing 10 is on the other side. In the back pressure backflow prevention device of a conveyor system configured with a back pressure inlet 12 through which back pressure flows, the back pressure flowing in through the back pressure inlet 12 inside the body housing 10 is supplied to the damper connector 11 side. an opening/closing piston 13 for selectively shutting off is configured; The opening/closing piston 13 is supported by an elastic spring 14 with a certain elastic force; At one side of the body housing 10, an exhaust port 15 through which the air supplied from the cylinder 20 can be discharged to the outside through the damper connector 11 and a release prevention hole for preventing the elastic spring 14 from being separated (16) is characterized in that it is configured.