| 摘要 |
There is provided a shale shaker having at least a base, a shaker screen, a basket, and a screen retainer for releasably mounting the shaker screen to the basket. The basket is mounted movably with respect to and on the base. The screen retainer has at least a cam surface and a tensioning device. The tensioning device has at least a bearing surface in contact with the cam surface, a spring responsive to the bearing surface, and at least one screen contact surface for engaging the shaker screen when the spring is placed in compression by the exertion of force by the cam surface on the bearing surface.
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