| 摘要 |
The present invention relates to an opening-closing device of a gas filter unit of a gas pipe including an opening-closing port lower body integrally connected to the upper part of a filter receiving body (FB) of the gas filter unit (GF); a sealing member inserted inside the opening-closing port lower body; an airtight disc unit pressing the sealing member; a pressing unit pressing the airtight disc unit; a disc supporting unit joined to the pressing unit to be detachable and supported by the pressing unit; at least one locking bolt coupled to a locking screw unit formed on the disc supporting unit; and an opening-closing port upper device joined to the disc supporting unit to be detached and joined to the opening-closing port lower body. The present invention remarkably reduce time required for unlocking the opening-closing port by rotating the opening-closing port at a predetermined angle to check and replace the gas filter installed in the gas pipe, thereby improving working efficiency. Additionally, the present invention makes the opening-closing port airtight by simply fastening a screw of the pressing unit installed on the center of the opening-closing port, thereby improving a function of preventing a gas leakage. |
