| 摘要 |
<p>PROBLEM TO BE SOLVED: To instantaneously and continuously set a flow ratio dividing an entrance port flow rate into a plurality of exit ports by providing a flow ratio set spool for controlling a flow rate control spool and by operating the flow ratio set spool from a control signal from the outside. SOLUTION: A flow ratio set spool 8 is provided with an oil passage 4a connected to an exit port B by sliding, a large-diameter land part 8a opening/ closing the communication with an entrance port P and adjusting the opening area, and a plurality of slots 8b provided in the large-diameter land part 8a. When the flow ratio set spool 8 is slid in the direction for compressing a compression spring 16 by the control signal from a signal port S, the slots 8b are opened to the oil passage 4a and the opening area is changed according to the sliding distance. Namely, the pressure compensated flow rate can be freely taken out from the exit ports A, B. This constitution can instantaneously set the flow ratio dividing the flow rate into the plurality of exit ports.</p> |
