Patent ID: 7886850

Claim:
A system for treating a mixture, the mixture including a drilling fluid and solid material, the system comprising a container with an inlet for the introduction of the mixture into the container and a fluid outlet for drilling fluid to exit the container, at least one rotatable screen assembly rotatably mounted within the container and including a center member and at least one screen apparatus with screening material for screening the mixture to separate drilling fluid from the mixture, the rotatable screen assembly including an interior structure for receiving separated drilling fluid from the at least one screen apparatus, the interior structure including a passage for drilling fluid to flow from the at least one screen apparatus into the center member, and a transmission apparatus in fluid communication with the center member for receiving drilling fluid therefrom and for transmitting the drilling fluid to the fluid outlet of the container, the system further comprising a deflector connected to the at least one screen apparatus and projecting at an angle therefrom.