FIELD: transportation.
SUBSTANCE: in screw conveyor load to electric motor (3) is measured, or value corresponding to this load. As this value is achieved or preset value of load is exceeded, screw shaft (2a) is lifted to increase gap between edge of screw blade (2b) and lower part of jacket (1).
EFFECT: prevents of screw wear and maintains efficiency of unloading.
10 cl, 5 dwg, 3 ex
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Authors
Dates
2009-09-27—Published
2005-09-02—Filed