Densification and oil extraction devices, systems, and methods

An extruder device, comprising:

• a driving mechanism;
• a piston pump section comprising a housing assembly and a piston, the housing assembly including a chamber disposed therein;
• and
• a liquid extraction section coupled to the piston pump section, the liquid extraction section comprising:
• a top planar structure;
• a bottom planar structure comprising a plurality of rods, each of the plurality of rods aligned adjacent to an adjacent of the plurality of rods;
• and
• a compression arrangement comprising a plurality of bottom plates disposed perpendicularly to each of the plurality of rods and spaced apart along a length of the bottom planar structure, wherein each bottom plate of the plurality of bottom plates is compressed against the plurality of rods by a compression member, wherein the driving mechanism drives the piston at least partially through the chamber to drive a fibrous mixture between the top planar structure and the bottom planar structure, and
• wherein responsive to traversing the fibrous mixture through the liquid extraction section, liquid from the fibrous mixture is extracted between adjacent rods in the plurality of rods of the bottom planar structure.