| 摘要 |
PURPOSE:To reduce the number of assembly parts and prolong the service life by permitting the operation of a valve rod in a rectilinear movement by an electromagnet. CONSTITUTION:An electromagnet 16 is equipped with a coil 16-A for driving a valve rod 15 in the opening direction and a coil 16-B for driving the valve rod in the closing direction, and when the valve rod 15 is moved upward, a valve piece 14 is set in the opening direction, and when the valve rod is moved downward, the valve piece 14 is set in the closing direction. Said valve rod 15 performs smooth rectilinear movement by the aid of a Teflon guide 17, and a stopper 19 in a pair of fixing frames 18 is inserted into the slit 20 on the valve rod 15 and fixed, and when the valve rod 15 is moved vertically, the stopper 19 shifts stepwise on the slits 20 and is fixed at a prescribed slit position. |
