Drive means for a twin screw extruder

Details Drive means for a twin screw extruder Drive means for a twin screw extruder

1980-09-09

1982-03-23

Little, Willis

Cutlery

308234, F16C 3506, F04B 2314

Patent

active

043209289

ABSTRACT:
Drive means for a twin screw extruder has a pair of drive shafts mounted in a housing and each to be connected to a drive and to a respective one of the screws of the extruder. A thrust bearing to absorb the axial thrust applied to the screws comprises a thrust ring surrounding both drive shafts and supported in the housing by an axial roller bearing, a pair of coaxial butting rings inserted in and secured against rotation with respect to the thrust ring, off-set from one another in an axial direction and surrounding the two drive shafts and a respective shaft thrust ring for each drive shaft secured thereon against relative rotation. The two shaft thrust rings are off-set from one another in an axial direction with each shaft thrust ring bearing against a respective one of the butting rings.
The surfaces of each thrust ring and associated butting ring facing towards one another are preferably of tapered construction to facilitate lubrication.

REFERENCES:
patent: 1926403 (1933-09-01), Phillips
patent: 2674942 (1954-04-01), Rockstrom
patent: 3516352 (1970-06-01), Lewis
patent: 4142765 (1979-03-01), Oslaker

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