Material feed device for an extruder

Agitating – With weighing

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Details

366 18, 366 76, 366150, B01F 1504

Patent

active

048120480

ABSTRACT:
The invention relates to a material feed device for an extruder. The material feed device has a storage container (4) suspended with provision for free movement on measuring members (3) of a mass throughput weighing device. The outlet (13) of the storage container (4) discharges into an inlet (5) of a feed unit (6) of the extruder. The outlet (13) and the inlet (5) are sealed off on the outside by a seal (16) enabling the storage container (4) to move freely in relation to the inlet (5). The seal comprises a rigid ring bearing via a sealing lip (17) against the outside of the tubular outlet (13) and borne via a sealing lip (18) on a flat sliding surface (15) of the inlet (5). While the sealing lip (17) bearing on the tubular outlet (13) enables the storage container (4) to make a vertical movement, the sealing lip (18) bearing on the flat surface (15) enables the storage container (4) to make a horizontal movement in both axes in relation to the inlet (5). Measuring errors are substantially excluded due to this seal, which does not impede the freedom of movement of the storage container (4).

REFERENCES:
patent: 1326375 (1919-12-01), Spencer
patent: 3259375 (1966-05-01), Sackett, Sr.
patent: 3920229 (1975-11-01), Piggott
patent: 4286883 (1981-09-01), Johanson
patent: 4660990 (1987-04-01), Svensson

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