Mixer/extruder having selectively variable shearing action there

Details Mixer/extruder having selectively variable shearing action there Mixer/extruder having selectively variable shearing action there

1983-01-13

1984-07-31

Jenkins, Robert W.

Agitating

Rubber or heavy plastic working

Stirrer is through-pass screw conveyor

366 89, 366 90, 366 99, 366322, 74 8914, 74104, B29B 106

Patent

active

044626916

ABSTRACT:
An extruder, including a rotor and a barrel, having mixing or working zones therein in which the material being mixed or worked is transferred layer by layer from upstream grooves in the rotor to input grooves in the barrel, and from output grooves in the barrel, which grooves are interleaved with the input grooves, layer by layer back to downstream grooves in the rotor. The input and output grooves of the barrel are intercommunicated by means of corresponding channels each of which has a selectively radially movable throttling member positioned therein for varying the cross-sectional opening of the channel in which it is positioned and, thus, the amount of shearing action and work performed on the material passing through such channel.

REFERENCES:
patent: 2744287 (1956-05-01), Parshall et al.
patent: 3102694 (1963-09-01), Frenkel
patent: 3102716 (1963-09-01), Frenkel
patent: 3102717 (1963-09-01), Frenkel
patent: 3164375 (1965-01-01), Frenkel
patent: 3375549 (1968-04-01), Geyer
patent: 3486192 (1969-12-01), Le Roy
patent: 3672641 (1972-06-01), Slaby
patent: 3981658 (1976-09-01), Briggs
patent: 4107788 (1978-08-01), Anders
patent: 4178104 (1979-12-01), Menges et al.
patent: 4199263 (1980-04-01), Menges et al.

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