Stop the pump, close the column outlet and remove the packing reservoir. This is most easily done by first removing the column from the stand and then unscrewing the reservoir over a sink.
停止泵压，关闭柱的出口，去除填压用的贮液器。首先从试管架上卸下柱体，然后从槽上拧下贮液器，这样就很容易完成。
It is analyzed why sand-removing effect of conventional cyclone desander is bad, and it is pointed out that the column of whirling gas in the center has a marked effect on purifying mud.
通用旋流除砂器中心部位出现的涡旋气柱会对泥浆净化效果产生不良影响。
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