A method for treating a food product of vegetable origin, including the steps of pushing, by means of a pushing device, the food product within a treatment cavity. This is defined between an internal surface of a fixed hollow body, or stator, and an external surface having conical shape of a rotor, and has an inlet mouth through which the food product of vegetable origin is introduced within the same and an outlet mouth through which the treated vegetable food product exits the cavity. The treatment cavity has a size which decreases going from the inlet mouth to the outlet mouth. It is provided a rotation of the rotor within the stator about a rotation axis. The combination of the rotation and of the pushing that are carried out by the machines produce a partial crushing of the food product of vegetable origin within the treatment cavity.

A method for treating a food product of vegetable origin, including the steps of pushing, by means of a pushing device, the food product within a treatment cavity. This is defined between an internal surface of a fixed hollow body, or stator, and an external surface having conical shape of a rotor, and has an inlet mouth through which the food product of vegetable origin is introduced within the same and an outlet mouth through which the treated vegetable food product exits the cavity. The treatment cavity has a size which decreases going from the inlet mouth to the outlet mouth. It is provided a rotation of the rotor within the stator about a rotation axis. The combination of the rotation and of the pushing that are carried out by the machines produce a partial crushing of the food product of vegetable origin within the treatment cavity.

A device for sludge treatment comprises a supporting frame of an external casing defining a treatment chamber provided with one inlet opening of the sludge to be treated; one discharge opening of the treated sludge; at least one auger element housed within the treatment chamber, and adapted to move the sludge to be treated along a direction of advancement; and filtration means located internally to the treatment chamber and surrounding the auger element; at least one anodic element associated with the auger element, and application means for applying a potential difference between the anodic element and the filtration means, generating an electric field adapted to interact with the sludge to be treated to produce an electro-osmotic process.

A device for sludge treatment comprises a supporting frame of an external casing defining a treatment chamber provided with one inlet opening of the sludge to be treated; one discharge opening of the treated sludge; at least one auger element housed within the treatment chamber, and adapted to move the sludge to be treated along a direction of advancement; and filtration means located internally to the treatment chamber and surrounding the auger element; at least one anodic element associated with the auger element, and application means for applying a potential difference between the anodic element and the filtration means, generating an electric field adapted to interact with the sludge to be treated to produce an electro-osmotic process.

A feeding arrangement comprising a transportation means (3) for transportation of material from a material supply to at least a first chute (7) and a second chute (8), a plug screw feeder (11) for feeding the material to the treatment stage. The plug screw feeder (11) is provided with a first inlet opening (12) connected to the first chute (7), which first chute (7) is provided between the transportation means (3) and the plug screw feeder (11). Further, the transportation means (3) comprises at least selectively openable first and second outlets (4, 5) arranged at different axial positions along the transportation means (2), which first outlet (4) is in connection with the first chute (7) and the second outlet (5) is in connection with the second chute (8).

A feeding arrangement comprising a transportation means (3) for transportation of material from a material supply to at least a first chute (7) and a second chute (8), a plug screw feeder (11) for feeding the material to the treatment stage. The plug screw feeder (11) is provided with a first inlet opening (12) connected to the first chute (7), which first chute (7) is provided between the transportation means (3) and the plug screw feeder (11). Further, the transportation means (3) comprises at least selectively openable first and second outlets (4, 5) arranged at different axial positions along the transportation means (2), which first outlet (4) is in connection with the first chute (7) and the second outlet (5) is in connection with the second chute (8).

A pressing apparatus having a strainer cage and at least two feeding screws, which are arranged one behind the other in the feeding direction on a common screw shaft, wherein a pressure zone with no screw helix is arranged between the feeding screws. In the region of the pressure zone, the pressing apparatus according to the invention has a plurality of scraper shells, and these provide for improved efficiency of the pressing operation.

A screw press for separating off liquid from an article, comprising a screw shaft together with a conveying helix, which is arranged helically on the screw shaft, and a housing enclosure, which surrounds the conveying helix, wherein a transporting passage for the article which is to be conveyed is formed between the screw shaft, the conveying helix and the housing enclosure, wherein a composite comprising hard-material particles which are embedded in a matrix component to form surface roughness is fastened with material bonding to at least one surface portion of the screw shaft, within the transporting passage. A use of a composite comprising hard-material particles which are embedded in a uniformly distributed manner in a matrix component to form surface roughness, for the purpose of providing fastening with material bonding to at least one surface portion of a screw shaft.

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.

A low speed seed oil expeller press with the capability of extracting oil through a new design that does not crush or grind the seed so as to eliminate the need for filtration and maintain the seed oil at a temperature below 130 degrees F. The seed oil expeller press has a seed preheating capability and controls the pressure and extraction oil temperature by manipulation of the expeller speed, the head volume and the size of the pressed seed exit orifice. The seed oil expeller press eliminates seed rotation within the head volume so as to eliminate crushing, grinding or tearing of the seed by a symmetrical knifed press head. The seed oil expeller press regulates seed temperature, seed feed rate, seed pressure, seed rotation and extracted seed oil temperature so as to compensate for the seed size, seed hardness and seed oil content, so as to allow for seed compression without crushing or tearing to accomplish seed oil extraction at a low (cold press) temperature.