| 摘要 |
<p>PURPOSE: To provide a fluid cutoff device in a flow passage having the minimum capacity at low cost by moving and engaging two joints incorporating a shuuter valve and provided with an inner sealing surface to connect, shut off, seal, and separate two branch streams in the fluid passage. CONSTITUTION: Joints 1 and 2 are connected by the rotation action. Two projecting parts 8a and 11a come into contact mutually at a position where two joints 1, 2 approach to each other, and shutter valves 8 and 11 overcome eccentric force of springs 9 and 12 so that they are sufficiently separated from the contact of sealing surfaces 10 and 13, respectively. For this reason, a fluid can flow in both directions. By rotating the joints 1 and 2 up to a position where they are apart across an interval relatively, the shutters 8 and 11 are pressed against respective sealing surfaces 10 and 13 due to the action of a spring to cut off fluid. When the joints are further rotated, the connection of flow passages into two branch passages can be released without causing a loss of fluid.</p> |
