| 摘要 |
A screen (1) for separating solids from drilling fluids comprises an outer frame (2) and a plurality of support members (7, 8, 9, 10, 11). A sheet (19) of perforate material is bonded to both the outer frame (2) and the support members (7, 8, 9, 10, 11) and three layers of mesh (24, 25, 26) are bonded to the sheet (19). In use, the screen (1) is secured in a vibratory shaker. Preferred embodiments have a high life expectancy and high conductance. Furthermore, accidental damage can be contained and repaired if desired. |
