Extracting-squeezing-compressing equipment used for municipal solid waste mixture

A machine for processing a mixture comprising water and organic matter,

• the machine comprising:
• a stepless hydraulic power transmission module containing a hydraulic source unit and a stepless power hydraulic transmission unit having controllable speed and rotation;
• a squeeze and press compression module in the form of a structural case having a long hollow cylindrical shaped body and a shaft for pressing and squeezing the mixture disposed within the body and adapted for rotary motion therein;
• said body having a waste-inlet at one end, followed by a water separation zone, a wet organic substance pressing zone, a heat and steam pressing zone, and a refuse-derived fuel (RDF) molding and pelletizing zone, wherein said structural case is formed with alternating pressure relief recesses and pressure increase areas in the inner surface, and wherein the depth of each of the pressure increasing recesses gradually reduces from a smaller inner diameter end of the structural case to a larger inner diameter end of the structural case;
• and
• said shaft for pressing and squeezing the mixture is hollow and has a conical cylindrical shape with an increasing diameter
• and a shaft body that orients toward a substantially same direction as a direction of the structural case and a helix screw disposed on the surface of the shaft body where a pitch of said helix screw decreases toward a larger diameter end of the shaft body, wherein the helix screw comprises multiple spiral forward thread segments and multiple spiral backward thread segments with each forward thread segment paired with a backward thread segment in a single continuous helical section arranged with a space in between each forward thread segment and a previous backward thread segments, each spiral backward thread segment equal to ¼ of a spiral forward thread segment, and a spiral backward thread segment disposed on the shaft adjacent to a pressure relief recess of the structural case;
• said processing comprises extracting, squeezing, compressing and compacting said mixture to provide both an organic-rich liquid and shaped, dry solid refuse-derived fuel (RDF) pellets.