| 摘要 |
An apparatus for the control of fluid flow through a valve. A single shaft-mounted cam moves translationally along the length of the shaft, stopping sequentially at positions adjacent to and in operative engagement with an actuator disposed on or near a valve body. Once in position with a predetermined valve, the cam, which is also coupled to a rotational member, is rotated, thus causing an eccentric portion of the cam to engage the actuator in such a way so as to force the valve to open or close. A flow detection system is integrated into a main fluid transport conduit, allowing sensed flow variations to be send to a controller. The controller uses a comparison algorithm to determine what fluid settings in the valve are necessary to effect a comparison algorithm to determine what fluid settings in the valve are necessary to effect a desired fluid flow through the valve, and prepares an input signal to be sent to one or more motors controlling the translational and rotationa motion of the cam. Capping devices and an enclosure with a safety door can be included to protect personnel and the ambient environment against fluid spillage. |
