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Dual-rigid-hollow-stem actuators in opposite-phase slurry pump drive having variable pumping speed and force
Dual-rigid-hollow-stem actuators in opposite-phase slurry pump drive having variable pumping speed and force
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机译:反相浆液泵驱动器中的双刚性空心杆执行器,具有可变的抽速和抽力
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摘要
A slurry pump has slurry hopper and dual pumping cylinders. The slurry pumping members are driven by opposite-phase actuators. Each actuator has a rigid-hollow-stem partition dividing the space between the actuator plunger and the cylinder into two drive chambers of different areas selectively supplied with pressurized fluid to drive the plunger with a selected force and speed. An associated valve shuts off flow to one of the drive chambers and is controlled at any given time to occupy the same position as a corresponding valve of the other actuator. The valves coordinate supply of fluid to corresponding drive chambers on alternate strokes of two actuators.
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