| 摘要 |
<p>A mining hydraulic filter column has a number of filter units with conventional forward-flow filter action and reverse-flush action for cleaning. The filters are arranged singly or in groups, each with an electro-magnetically operated control valve triggered by an electronic control in accordance with a state-variable or operational parameter representing the filter condition. The back-flush process can be done individually or sequentially as part of a regular cleaning cycle.</p> |
