| 摘要 |
PURPOSE:To decrease loss of energy by controlling the difference of pressure definitely between front position of pressure decreasing type pressure compensation valve and rear position of throttle valve by the operation of the load sensing valve in a flowrate controlling device with compensation of pressure for an injection molding machine, etc. CONSTITUTION:A pressure decreasing type pressure compensation valve 14 is arranged to control the difference of pressure definitely in the front & rear of the throttle valve 15 of a flowrate controlling device with compensation of pressure. A load sensing valve 21 is connected with a pilot chamber 33 in a front position of the pressure compensation valve 14. The difference of pressure between the front position of the pressure decreasing type pressure compensation valve 14 and the rear position of throttle valve 15 is definitely controlled by operation of the load sensing valve 21. Thus the precise compensation of pressure is performed by making the difference of pressure in the front & rear positions of the throttle valve 15 definite and decreasing loss of energy. |
