| 摘要 |
An air vent sealing device is provided to test the strength of a tank without removing a vent head by fixing a through-hole with a diaphragm to be sealed. An air vent sealing device comprises a shielding plate(60), an air tight cover(70) and a pressing member(71). The shielding plate is placed on the upper side of a diaphragm(22) forming an air vent. The shielding plate closes a through-hole(22a) formed in the diaphragm. The air tight cover is coupled to the opening of a case(21) forming the air bent. The opening opens and closes the opening. The pressing member is coupled to control the height of the air tight cover. The pressing member presses the shielding plate to adhere to the upper side of the diaphragm. |
