| 摘要 |
<p>PURPOSE:To avoid the possibility of spark generation during operation and prevent flashing on leaked gas by constituting with an electromagnetic mechanism of a driving plate rotatable in both directions and an operating mechanism made of a rotary plate engaged with a feed claw and driven to rotate in both directions. CONSTITUTION:When a solenoid 12 is deenergized and rotors 14, 15 return to a neutral position, a driving plate 10 rotates to return. At this time, two pins 3 on the plate 10 are released from the pressure of spring plates 9 by slackened braids 11, are pushed up by expansion springs 8 and a slip action at the round tips of adjacent pins 7 and get over the adjacent pins respectively, therefore only the plate 10 rotates to return with a rotary plate 4 being remained at the position where the braids were operated previously. This movement is repeated during intermittent operations of the electromagnetic mechanism, and the valve cock 5 is driven to rorate successively in one direction.</p> |
