| 摘要 |
<p>PROBLEM TO BE SOLVED: To adjust a position of a spill valve in the direction of axial line and operate electronic equipment for controlling a conveyance pump using a common casing and mount and dismount parts of a device quickly and simply. SOLUTION: This device operates the spill valve 5 arranged in a return pipe 4 of the conveyance pump 2 and provided with a valve casing 6 and a valve element 7. The valve casing 6 is inserted and fixed into the easing 3 of the conveyance pump 2, a compression spring 8 is arranged between the valve casing 6 and the valve element 7, and a protruding part piece 11 protruding from the valve casing 6 is attached to the valve element 7. A position switching device 12 provided in the conveyance pump 2 is held on the protruding part piece 11 by an intermediate member 9 fixed on the casing 3, and electric, gas operation type, liquid pressure type, and/or mechanical parts are arranged in the intermediate member 9 to control the conveyance pump 2 so that these parts can be operated through a control face 38 extending in the peripheral direction of the position switching device 12.</p> |
