| 摘要 |
An improved screen separator which employs orbital motion for the positive removal of solids from liquids, such as drilling mud. A tensioned screen is mounted horizontally at it peripheral edges between parallel side members of a framework. A cushion rail mounted between the side members carries a resilient screen cushion in tight engagement with the screen. The unique screen cushion has an elongated body with a longitudinal slot receiving the lower edge of the cushion rail. The body has diverging sides which terminate at flared lips at each edge of the concave bottom side of the body. The body produces a downward bow in the screen and the bottom side surface conforms precisely to the the bowed screen. As a result, abrasive solids can not be trapped between the screen cushion and the screen. In addition, the body has diverging sides which divert solids from the screen cushion laterally onto the adjacent screen for separation from the liquid being purified.
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