Abstract

An assembly for processing viscous material comprises a process duct extending along a longitudinal axis, wherein viscous material advances in one advancing direction, at least one pumping device provided with a stator comprising a cylindrical seat, and at least one cylindrical rotor. The at least one cylindrical rotor is housed in the stator and is coupled to the stator with a sliding seal. The rotor rotates around a rotating axis substantially parallel to the longitudinal axis and has an outer face with at least one groove, which forms with the inner surface of the stator one pumping channel. The pumping device is configured so that the pumping channel extends between at least one inlet and at least one outlet and the inlet and the outlet are in fluid connection with the process duct.

IPC Classes  ?

• B01F 27/272 - Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces
• B01F 27/724 - Mixers with rotary stirring devices in fixed receptaclesKneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices with a single helix closely surrounded by a casing
• B01F 33/82 - Combinations of dissimilar mixers
• B01F 23/47 - Mixing liquids with liquidsEmulsifying involving high-viscosity liquids, e.g. asphalt
• B01F 23/43 - Mixing liquids with liquidsEmulsifying using driven stirrers

Abstract

An assembly for processing viscous material comprises: - a process duct (2) extending along a longitudinal axis (A), wherein viscous material advances in one advancing direction (D); - at least one pumping device (3) provided with: a stator (10) comprising a cylindrical seat (11); at least one cylindrical rotor (12), which is housed in the stator (10) and is coupled to the stator (10) with a sliding seal; wherein the rotor (12) rotates around a rotating axis (B) substantially parallel to the longitudinal axis (A) and has an outer face (13) with at least one groove (15), which forms with the inner surface (16) of the stator (10) one pumping channel (19); the pumping device (3) being configured so that the pumping channel (19) extends between at least one inlet (21) and at least one outlet (22); the inlet (21) and outlet (22) being in fluid connection with the process duct (2).

IPC Classes  ?

• B29B 7/40 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
• B29B 7/60 - Component parts, details or accessoriesAuxiliary operations for feeding, e.g. end guides for the incoming material
• B29B 7/84 - Venting or degassing
• B29B 7/86 - Component parts, details or accessoriesAuxiliary operations for working at sub- or superatmospheric pressure
• B29B 7/90 - Fillers or reinforcements
• B29C 48/50 - Details of extruders
• B29C 48/76 - Venting meansDegassing means
• B29C 48/25 - Component parts, details or accessoriesAuxiliary operations
• B29C 48/285 - Feeding the extrusion material to the extruder
• B29B 7/42 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
• B29B 7/48 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws

Abstract

A material extruding assembly is provided with an extruder (2) provided with an hollow body (5) extending along a longitudinal axis (A), with at least one extrusion screw (6), which is housed in the hollow body (5) and is rotatable about a first rotation axis (B1), and with a processing channel (7), which is substantially defined by the space comprised between the least one extrusion screw (6) and the cylindrical inner surface (8) of the hollow body (5); with at least one pumping device (3) provided with a cylindrical rotor (11) rotatable about a second rotation axis (B2) and having an outer face (12) provided with at least one groove (13), with a stator (15) provided with a cylindrical seat (16), wherein the rotor (11) is housed and coupled in sliding manner to the rotor (11), and with a pumping channel (17), which is substantially defined by the space comprised between the rotor (11) and the cylindrical inner surface (19) of the stator (15); wherein the processing channel (7) and the pumping channel (17) are in direct communication through a passage (20), which is defined by the intersection of the extension of the cylindrical inner surface (19) of the stator (15) and the extension of the cylindrical inner surface (8) of the hollow body (5).

IPC Classes  ?

• B29C 47/10 - Feeding the material to the extruder
• B29C 47/36 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
• B29C 47/38 - using screws
• B29C 47/76 - Venting or degassing means
• B29C 47/66 - Barrels or cylinders
• B29C 47/40 - using at least two intermeshing screws

Abstract

Screw for a polymeric material extruder is provided with a nut (10) extending along a longitudinal axis (A) and a thread (12) wound in a helix about the outer surface (7) of the nut (10); the thread (12) having at least one first stretch (20; 40) having a first helix winding direction and at least one second stretch (21; 41) having a second helix winding direction opposite to the first direction; the first direction being such as to obtain, in use, feeding of the polymeric material towards an outlet (5) in an advancing direction (E).

IPC Classes  ?

• B29C 47/60 - Screws
• B29B 7/42 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix

Abstract

A machine for continuously processing polymer material has a rotor (3) which rotates about an axis of rotation (A1); a stator (4) sealed in sliding manner to the rotor (3); at least one annular processing channel (5) which extends heightwise (H) between the rotor (3) and the stator (4), and lengthwise between an inlet channel (6) for feeding polymer material to the annular processing channel (5), and an outlet channel (7) for expelling the polymer material from the annular processing channel (5); and a feed device (8) located inside the inlet channel (6) and designed to pre-treat the solid polymer material and to release the solid polymer material directly onto the outer face (9) of the rotor (3) inside the annular processing channel (5).

IPC Classes  ?

• B29C 47/52 - using rollers or discs
• B29C 47/10 - Feeding the material to the extruder
• B29B 7/52 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices with rollers or the like, e.g. calenders
• B29C 47/08 - Component parts, details or accessories; Auxiliary operations
• B01F 7/00 - Mixers with rotary stirring devices in fixed receptacles; Kneaders

Abstract

A machine (1) for processing polymer materials has a rotor (2) rotatable around an axis of rotation (A); a stator (3) slidingly and sealingly coupled with the rotor (2); at least one circumferential recess (7) which extends by an angle of less than 360° into the stator (3) and forms with the rotor (2) a processing channel (8) of the polymer material; at least one inlet channel (11) for feeding the polymer material to the processing channel (8); and an outlet channel (12) for evacuating the polymer material from the processing channel (8).

IPC Classes  ?

• B01F 7/00 - Mixers with rotary stirring devices in fixed receptacles; Kneaders
• B29B 7/52 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices with rollers or the like, e.g. calenders
• B29C 47/52 - using rollers or discs