| 摘要 |
<p>The present invention relates to a swing check valve comprising: a valve body (3) which a through hole (11) which fluid passes through when a valve is open is opened in the center; a disk (5) opening and closing the through hole (11) according to the flow direction of the fluid; a hinge portion (7) connecting the disk (5) to a hinge groove (13) to rotate around a pivot; a divergence display portion (9) showing a divergence of the disk (5), which is connected to a hinge pin (21) by a hinge bracket (23) of the hinge portion (7), to the outside; and a shaft connecting portion (50) connecting the hinge portion (7) and the divergence display portion (9), but not delivering translational motion of the hinge pin (21) to the divergence display portion (9). Accordingly, the present invention prevents an internal side of a tubular body and a rotatory end of the disk from being damaged because of a mutual clash by retraining an excessive opening of the disk with a finished grade of the hinge bracket. Also, the present invention prevents a sealing ring and others from being damaged by an external force since the external force to the disk, except the power to make the disk do the pivot rotation, is cut by the shaft connecting portion, and is not delivered to a connecting pin.</p> |
