| 摘要 |
PROBLEM TO BE SOLVED: To reduce the size of a flap valve device, and to facilitate assembling work, in the flap valve device, and an air-liquid separation device having the flap valve device.SOLUTION: A flap valve device 2 of an always open type includes: a body 5 having an opening 4; a flap 6 which opens and closes the opening; and a torsion coil spring 7 which is arranged between the body and the flap, and energizes the flap in an open direction. The flap valve device also comprises: a body side bearing 21 arranged at the body; a flap-side bearing 25 arranged at the flap; and a connecting member 27 having a hinge shaft part 27A which penetrates the body side bearing, the flap-side bearing, and a coil part 7A of the torsion coil spring, and functions as a turning shaft of the flap, and an extension part 27B which extends to an external face part 6b of the flap from one end of the hinge shaft part; and a spring lock part 43 which is arranged at the body, and locks one end of the torsion coil spring. The other end of the torsion coil spring is locked to the extension part, and the extension part is locked to the external face part of the flap. |
