Apparatus for the extrusion, expansion and/or thermal treatment

Details Apparatus for the extrusion, expansion and/or thermal treatment Apparatus for the extrusion, expansion and/or thermal treatment

1988-08-19

1990-10-02

Hornsby, Harvey C.

Agitating

Rubber or heavy plastic working

Stirrer is through-pass screw conveyor

366 90, 366307, 366322, B01F 708, B29B 742

Patent

active

049603280

ABSTRACT:
For the improvement of the reaction and mixing effects of extruders, expanders and similar devices, as well as for the increase of the energy yield, the so-called scraper fingers (1) employed in such devices are provided with flats or recesses (4'). In addition, the scraper fingers (1) are disposed rotatably around an angle, so that the surface facing the advanced product in the screw space (12) can be varied. The twisting is adjustable from the outside of the jacket of the apparatus. The fingers (1) have at least one center bore (6), from which there issue side bores (8) in optional directions. In addition to a flat or recess (4'), the fingers (1, 4) can also have twisting (4') within themselves.

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