MAGNETIC VIBRATORY SCREEN CLAMPING

摘要

Methods for automatically controlling a vibratory separator for processing drilling fluid are disclosed. The methods include introducing material to a vibratory separator,and sensing with a sensor apparatus a state parameter indicative of operation of the vibratory separator and providing a signal indicative of a value of the state parameter to a control apparatus. Then, with the control apparatus, automatically controlling the vibratory separator based on the level of the state parameter.In a further feature of a vibratory separator screen supports 310a, 311b, 311c are secured to their respective screens 310, 311, 312 with suitable clamping devices such as one or more electro-magnetic clamp apparatus 314, or other suitable clamp devices. The electro-magnetic clamp apparatus 314 may be of the type which are energized and/or de-energized with a single temporary electric pulse. That is, an un-magnetized clamp apparatus may be set to a magnetized state and remain in a magnetized state with a temporary electric pulse signal from some form of a controller device or other suitable source. Another pulse from the same or a different source may then set it back to an un-magnetized state and the clamp will remain in that state indefinitely until it is once again re-energized. The clamp apparatus may be based on monostable or bistable electropermanent magnets A 'constant 'G' force controller (not shown) may be included with the control system of the controller to assure that the vibratory accelerations are maintained within acceptable limits.