| 主权项 |
1. A substance dispensing system, comprising:
a hydraulic drive system having a hydraulic pressure, comprising:
a hydraulic cylinder;a hydraulic reservoir containing a hydraulic fluid;a hydraulic pump in fluid communication with the hydraulic reservoir, the hydraulic pump operable to move the hydraulic fluid to the hydraulic cylinder; anda hydraulic valve having a variable pressure setting, the hydraulic valve operable between a closed position in which the hydraulic pump moves the hydraulic fluid to the hydraulic cylinder and an open position in which the hydraulic pump moves the hydraulic fluid to the hydraulic reservoir; a substance containment system in communication with the hydraulic cylinder of the hydraulic drive system, the substance containment system comprising:
a container having a first end, a second end, and a deformable wall extending therebetween and defining a container interior adapted to hold a substance, the substance contained within the container at a substance pressure;an actuation member movably positionable relative to the container, the actuation member in communication with the hydraulic cylinder, the actuation member movable between a first position in which the actuation member is adjacent the first end of the container and a second position in which the actuation member is adjacent the second end of the container; anda dispensing valve in communication with the container, the dispensing valve operable between an open position in which the substance is able to flow out the container and a closed position in which the substance is maintained within the container; wherein, with the actuation member in the first position and the hydraulic pump activated, the hydraulic pump moves the hydraulic fluid to the hydraulic cylinder to actuate the hydraulic cylinder which advances the actuation member from the first position towards the second position, with the dispensing valve in the open position, as the actuation member moves from the first position towards the second position, the actuation member deforms the container thereby expelling the substance from the container, and with the dispensing valve in the closed position, the substance pressure increases and provides a resistance that resists movement of the actuation member and the hydraulic cylinder thereby increasing the hydraulic pressure of the hydraulic drive system, and when the hydraulic pressure reaches the variable pressure setting, the hydraulic valve moves to the open position in which the hydraulic pump moves the hydraulic fluid to the hydraulic reservoir thereby relieving the hydraulic fluid pumped to the hydraulic cylinder and stopping movement of the hydraulic cylinder and the actuation member. |
