This disclosure describes a machine for treating organic waste, comprising a casing which defines an inner treatment chamber for organic waste delimited at least in part by a screening grid, and an inlet opening for waste at one end of the chamber and an outlet opening at an end opposite to the inlet opening; at least one driven shaft installed in the inner chamber and provided with mechanical means for grinding or pressing the introduced organic waste against the screening grid or against at least one wall which delimits the inner treatment chamber; a first motor, having a drive shaft functionally coupled to the driven shaft; a first transmission system configured to transmit to the driven shaft a rotational movement imparted by the first motor to the drive shaft, the first transmission system comprising at least one first support bearing functionally coupled to the drive shaft. A particular feature of the machine according to the present disclosure consists in the fact that the said first transmission system comprises a second self-aligning roller bearing configured to allow an angular misalignment between a longitudinal axis of the driven shaft and a rotation axis of the drive shaft up to a maximum misalignment value such that a free distal end of the driven shaft may fluctuate heightwise inside the inner chamber for treating organic waste.

The invention relates to a screw press (1) comprising a shaft (4) and a spiral helix (5) provided thereon, wherein the helix (5) goes over in the inlet region (2) of the screw press (1) into a freely projecting helix (8). It is principally characterized in that a tube (9) is provided in the inlet region (2) of the screw press (1). As a result, on the one hand the screen area can be increased greatly in size, on the other hand the co-rotation of the suspension with the shaft can be reduced or avoided.

A raw-material supply device for supplying a biomass raw material under pressure, wherein the device is provided with: a screw body, provided inside a screw feeder and adapted for compressing, rotating, and transporting the powdered biomass raw material using a motor from a normal-pressure feed section for the fed biomass raw material to a high-pressure discharge section; and a pressing plug provided on the tip section side of the screw body, the pressing plug having a plug tip for maintaining a high-temperature/high-pressure field against the discharge force of compressed consolidated biomass. The interior of the screw feeder comprises a raw-material feed region for feeding the biomass raw material in the raw-material transport direction, a raw-material compression region for compressing the biomass raw material, a raw-material consolidation region for consolidating the biomass raw material in the form of a cork, and a material seal section for maintaining the high-pressure field using the consolidated biomass.

A solid/fluid separation module and apparatus enables treatment of solid/fluid mixtures to generate a filtered mass having a solids content above 50%. A filter unit with stacked filter plates and filter passages recessed into a face of each filter plate is provided.

An apparatus for treating waste sludge includes an outer container casing, internally hollow, an inner body coaxial with the outer casing, a compacting and dehydrating chamber, inside the outer container casing and along which sludge to be treated runs, an inlet zone for supplying sludge to the chamber, an outlet zone for unloading treated sludge, movement elements for the sludge, cooperating with the inner body, which promote compaction and advancement of the sludge from the inlet zone to the outlet zone; a container net connected to a negative pole of a control unit to form a cathode, and the inner body connected to a positive pole to form an anode. A method of treating sludge includes the promoting the continuous advancement and compaction of sludge inside a compression chamber between the anode and cathode, and establishing a difference in potential in order to subject the sludge to an electrical field.

A single flight screw, a single flight high pressure screw pump and the use of the pump in a compactor for compacting and dewatering debris commonly found in waste water. The bore, screw diameter and the flight spacing are constant and the compression force is mostly axial. The work is done at the very end of the screw.

A juicer includes a housing being open to top and including an annular first flange on a top and at least one lower juice spout on a peripheral surface, and a support on a bottom; a filtering mechanism in the housing and including longitudinal ridges on an inner surface, screens each disposed between two adjacent ones of the ridges, annular second flanges on an outer surface, a first rim extending downward from the lowest second flange, and at least one port through the first rim; a rotating mechanism in the filtering mechanism and including an annular element on a bottom edge, a helical screw blade on an outer surface, and an electric motor for rotating the screw blade; and a feed chute on the housing and including an annular member on a bottom edge and a second rim extending downward from the annular member.

A method and a device for pressing, wherein an extraction agent is fed into the pressing chamber in addition to the mechanical pressing process. The extraction agent serves to extract oil from the press cake and simultaneously to cool the press cake and the pressed oil, so that a high product quality of press cake and oil and simultaneously a good oil yield can be realized.

A helical screw conveyor unit, worm shaft, worm extruder and method for providing a worm shaft, wherein the helical screw conveyor unit is an exchangeable element for a helicoidally or spirally winding helix of a worm shaft, having a main body with a helicoidally winding helix element, wherein the helical screw conveyor unit is serviced with little outlay on servicing, the top side of the lateral surface is concavely curved in shell-like form about the longitudinal axis, and the main body has a radial opening for the leadthrough of a fastening region of a worm shaft shank, the helix element has at most one half of one helix turn, the the main body lateral surface has an inner surface for being seated on the fastening region, and the helical screw conveyor unit has at least one fastening element for detachably fastening the main body to the fastening region.

A juice-extracting drum includes a screw rotating inside. An inner module includes a hollow cylinder with an upper portion having the screw. A plurality of slits are formed as penetration holes having both lateral sides, an upper surface, and a lower surface along an interior circumference. An outer module is detachably coupled to the inner module, and includes a rib protruding in a radially interior direction on an interior circumference. The rib is inserted into the slit of the inner module when the outer module surrounds and combines the inner module. A predetermined fixed gap discharging juice extracted by the screw is formed lengthily in an up and down direction between the lateral side of the slit of the inner module and a lateral side of the rib of the outer module. The fixed gap is formed in a direction intersecting the screw blade.