SCREEN ASSEMBLY AND SHALE SHAKER

摘要

A shale shaker comprising a screen assembly (940) , the screen assembly comprising a support (942) and at least one layer of screening material (950) , the screen support (942) having a periphery and an underside characterised in that a spacer (970-973) is arranged on the underside of the screen support (942) and wherein the shale shaker comprises fixing apparatus for fixing the periphery of the screen assembly (940) and a structural member underneath the screen assembly, the spacer (970-973) arranged between the screen support (940) and the structural member.