Extractor with screen washing system

An extractor system comprising:

• an extraction chamber;
• a conveyance system to convey solid materials through the extraction chamber in a direction of material travel;
• a screen supported by a screen frame, the screen having a top surface across which the solid materials are conveyed by the conveyance system;
• a fluid supply system disposed above the solid materials and configured to apply an extraction fluid to the solid materials to extract soluble components into the extraction fluid;
• a fluid removal system disposed below the solid materials and configured for removing the extraction fluid after it has passed through the solid materials and the screen;
• and
• a screen washing system disposed under the screen and supported against movement in the direction of material travel, the screen washing system including a washing fluid intake and a plurality of outlet nozzles spaced from and directed upward towards the screen and configured to apply a washing fluid to an underside of the screen
• wherein the screen washing system is pivotably connected under the screen and configured to oscillate relative to the screen.