Dosing or feeding apparatus for precisely feeding loose bulk mat

Details Dosing or feeding apparatus for precisely feeding loose bulk mat Dosing or feeding apparatus for precisely feeding loose bulk mat

1989-05-25

1991-04-16

Bollinger, David H.

Dispensing

Agitator and/or ejector operating on material in either...

Mounted on or in conveyer or movable trap chamber

222220, 222236, 222239, 222342, 222345, 222367, 222408, 222 77, G01F 1300

Patent

active

050075640

ABSTRACT:
A dosing or metering feeding apparatus for precisely feeding a stream of powdered or fine grained loose bulk material includes a cylindrical container (1) for storing the loose material (3). A rotating turntable (4) essentially closing the bottom of the container (1). A discharge groove (6) is located in the turntable around the circumference of the turntable (4), whereby the discharge groove (6) opens radially outwardly. A stripper is arranged to reach into the discharge groove (6) for stripping the dosed material (3) from the discharge groove (6) and for discharging the dosed or metered material. This arrangement provides a clearly defined discharge rate of the loose material. The discharge rate may be simply adjusted to different desired feed rates by varying the rotational speed of the turntable (4). A high dosing or metering precision is achieved. The dosing apparatus may be used together with a weighing scale for carrying out a gravimetric feeding by controlling the turntable drive in closed loop fashion by a control signal derived from the weighing scale.

REFERENCES:
patent: 1936105 (1933-11-01), Cole
patent: 1939703 (1933-12-01), Hunt et al.
patent: 4585148 (1986-04-01), Ito
patent: 4635819 (1987-01-01), Wilson et al.

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